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tegrakernel/kernel/nvidia/drivers/net/wireless/bcmdhd/bcmutils.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* Driver O/S-independent utility routines
*
* Copyright (C) 1999-2015, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
* $Id: bcmutils.c 530650 2015-01-30 13:06:35Z $
*/
#include <bcm_cfg.h>
#include <typedefs.h>
#include <bcmdefs.h>
#include <stdarg.h>
#ifdef BCMDRIVER
#include <osl.h>
#include <bcmutils.h>
#if defined(BCMNVRAM)
#include <siutils.h>
#include <bcmnvram.h>
#endif
#else /* !BCMDRIVER */
#include <stdio.h>
#include <string.h>
#include <bcmutils.h>
#if defined(BCMEXTSUP)
#include <bcm_osl.h>
#endif
#ifndef ASSERT
#define ASSERT(exp)
#endif
#endif /* !BCMDRIVER */
#include <bcmendian.h>
#include <bcmdevs.h>
#include <proto/ethernet.h>
#include <proto/vlan.h>
#include <proto/bcmip.h>
#include <proto/802.1d.h>
#include <proto/802.11.h>
void *_bcmutils_dummy_fn = NULL;
#ifdef BCMDRIVER
/* copy a pkt buffer chain into a buffer */
uint
pktcopy(osl_t *osh, void *p, uint offset, int len, uchar *buf)
{
uint n, ret = 0;
if (len < 0)
len = 4096; /* "infinite" */
/* skip 'offset' bytes */
for (; p && offset; p = PKTNEXT(osh, p)) {
if (offset < (uint)PKTLEN(osh, p))
break;
offset -= PKTLEN(osh, p);
}
if (!p)
return 0;
/* copy the data */
for (; p && len; p = PKTNEXT(osh, p)) {
n = MIN((uint)PKTLEN(osh, p) - offset, (uint)len);
bcopy(PKTDATA(osh, p) + offset, buf, n);
buf += n;
len -= n;
ret += n;
offset = 0;
}
return ret;
}
/* copy a buffer into a pkt buffer chain */
uint
pktfrombuf(osl_t *osh, void *p, uint offset, int len, uchar *buf)
{
uint n, ret = 0;
/* skip 'offset' bytes */
for (; p && offset; p = PKTNEXT(osh, p)) {
if (offset < (uint)PKTLEN(osh, p))
break;
offset -= PKTLEN(osh, p);
}
if (!p)
return 0;
/* copy the data */
for (; p && len; p = PKTNEXT(osh, p)) {
n = MIN((uint)PKTLEN(osh, p) - offset, (uint)len);
bcopy(buf, PKTDATA(osh, p) + offset, n);
buf += n;
len -= n;
ret += n;
offset = 0;
}
return ret;
}
/* return total length of buffer chain */
uint BCMFASTPATH
pkttotlen(osl_t *osh, void *p)
{
uint total;
int len;
total = 0;
for (; p; p = PKTNEXT(osh, p)) {
len = PKTLEN(osh, p);
total += len;
#ifdef BCMLFRAG
if (BCMLFRAG_ENAB()) {
if (PKTISFRAG(osh, p)) {
total += PKTFRAGTOTLEN(osh, p);
}
}
#endif
}
return (total);
}
/* return the last buffer of chained pkt */
void *
pktlast(osl_t *osh, void *p)
{
for (; PKTNEXT(osh, p); p = PKTNEXT(osh, p))
;
return (p);
}
/* count segments of a chained packet */
uint BCMFASTPATH
pktsegcnt(osl_t *osh, void *p)
{
uint cnt;
for (cnt = 0; p; p = PKTNEXT(osh, p)) {
cnt++;
#ifdef BCMLFRAG
if (BCMLFRAG_ENAB()) {
if (PKTISFRAG(osh, p)) {
cnt += PKTFRAGTOTNUM(osh, p);
}
}
#endif
}
return cnt;
}
/* count segments of a chained packet */
uint BCMFASTPATH
pktsegcnt_war(osl_t *osh, void *p)
{
uint cnt;
uint8 *pktdata;
uint len, remain, align64;
for (cnt = 0; p; p = PKTNEXT(osh, p)) {
cnt++;
len = PKTLEN(osh, p);
if (len > 128) {
pktdata = (uint8 *)PKTDATA(osh, p); /* starting address of data */
/* Check for page boundary straddle (2048B) */
if (((uintptr)pktdata & ~0x7ff) != ((uintptr)(pktdata+len) & ~0x7ff))
cnt++;
align64 = (uint)((uintptr)pktdata & 0x3f); /* aligned to 64B */
align64 = (64 - align64) & 0x3f;
len -= align64; /* bytes from aligned 64B to end */
/* if aligned to 128B, check for MOD 128 between 1 to 4B */
remain = len % 128;
if (remain > 0 && remain <= 4)
cnt++; /* add extra seg */
}
}
return cnt;
}
uint8 * BCMFASTPATH
pktdataoffset(osl_t *osh, void *p, uint offset)
{
uint total = pkttotlen(osh, p);
uint pkt_off = 0, len = 0;
uint8 *pdata = (uint8 *) PKTDATA(osh, p);
if (offset > total)
return NULL;
for (; p; p = PKTNEXT(osh, p)) {
pdata = (uint8 *) PKTDATA(osh, p);
pkt_off = offset - len;
len += PKTLEN(osh, p);
if (len > offset)
break;
}
return (uint8*) (pdata+pkt_off);
}
/* given a offset in pdata, find the pkt seg hdr */
void *
pktoffset(osl_t *osh, void *p, uint offset)
{
uint total = pkttotlen(osh, p);
uint len = 0;
if (offset > total)
return NULL;
for (; p; p = PKTNEXT(osh, p)) {
len += PKTLEN(osh, p);
if (len > offset)
break;
}
return p;
}
#endif /* BCMDRIVER */
#if !defined(BCMROMOFFLOAD_EXCLUDE_BCMUTILS_FUNCS)
const unsigned char bcm_ctype[] = {
_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 0-7 */
_BCM_C, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C,
_BCM_C, /* 8-15 */
_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 16-23 */
_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 24-31 */
_BCM_S|_BCM_SP,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 32-39 */
_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 40-47 */
_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D, /* 48-55 */
_BCM_D,_BCM_D,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 56-63 */
_BCM_P, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X,
_BCM_U|_BCM_X, _BCM_U, /* 64-71 */
_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 72-79 */
_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 80-87 */
_BCM_U,_BCM_U,_BCM_U,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 88-95 */
_BCM_P, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X,
_BCM_L|_BCM_X, _BCM_L, /* 96-103 */
_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 104-111 */
_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 112-119 */
_BCM_L,_BCM_L,_BCM_L,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_C, /* 120-127 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 128-143 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 144-159 */
_BCM_S|_BCM_SP, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P,
_BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 160-175 */
_BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P,
_BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 176-191 */
_BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U,
_BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, /* 192-207 */
_BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_P, _BCM_U, _BCM_U, _BCM_U,
_BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_L, /* 208-223 */
_BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L,
_BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, /* 224-239 */
_BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_P, _BCM_L, _BCM_L, _BCM_L,
_BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L /* 240-255 */
};
ulong
bcm_strtoul(const char *cp, char **endp, uint base)
{
ulong result, last_result = 0, value;
bool minus;
minus = FALSE;
while (bcm_isspace(*cp))
cp++;
if (cp[0] == '+')
cp++;
else if (cp[0] == '-') {
minus = TRUE;
cp++;
}
if (base == 0) {
if (cp[0] == '0') {
if ((cp[1] == 'x') || (cp[1] == 'X')) {
base = 16;
cp = &cp[2];
} else {
base = 8;
cp = &cp[1];
}
} else
base = 10;
} else if (base == 16 && (cp[0] == '0') && ((cp[1] == 'x') || (cp[1] == 'X'))) {
cp = &cp[2];
}
result = 0;
while (bcm_isxdigit(*cp) &&
(value = bcm_isdigit(*cp) ? *cp-'0' : bcm_toupper(*cp)-'A'+10) < base) {
result = result*base + value;
/* Detected overflow */
if (result < last_result && !minus)
return (ulong)-1;
last_result = result;
cp++;
}
if (minus)
result = (ulong)(-(long)result);
if (endp)
*endp = DISCARD_QUAL(cp, char);
return (result);
}
int
bcm_atoi(const char *s)
{
return (int)bcm_strtoul(s, NULL, 10);
}
/* return pointer to location of substring 'needle' in 'haystack' */
char *
bcmstrstr(const char *haystack, const char *needle)
{
int len, nlen;
int i;
if ((haystack == NULL) || (needle == NULL))
return DISCARD_QUAL(haystack, char);
nlen = (int)strlen(needle);
len = (int)strlen(haystack) - nlen + 1;
for (i = 0; i < len; i++)
if (memcmp(needle, &haystack[i], nlen) == 0)
return DISCARD_QUAL(&haystack[i], char);
return (NULL);
}
char *
bcmstrnstr(const char *s, uint s_len, const char *substr, uint substr_len)
{
for (; s_len >= substr_len; s++, s_len--)
if (strncmp(s, substr, substr_len) == 0)
return DISCARD_QUAL(s, char);
return NULL;
}
char *
bcmstrcat(char *dest, const char *src)
{
char *p;
p = dest + strlen(dest);
while ((*p++ = *src++) != '\0')
;
return (dest);
}
char *
bcmstrncat(char *dest, const char *src, uint size)
{
char *endp;
char *p;
p = dest + strlen(dest);
endp = p + size;
while (p != endp && (*p++ = *src++) != '\0')
;
return (dest);
}
/****************************************************************************
* Function: bcmstrtok
*
* Purpose:
* Tokenizes a string. This function is conceptually similiar to ANSI C strtok(),
* but allows strToken() to be used by different strings or callers at the same
* time. Each call modifies '*string' by substituting a NULL character for the
* first delimiter that is encountered, and updates 'string' to point to the char
* after the delimiter. Leading delimiters are skipped.
*
* Parameters:
* string (mod) Ptr to string ptr, updated by token.
* delimiters (in) Set of delimiter characters.
* tokdelim (out) Character that delimits the returned token. (May
* be set to NULL if token delimiter is not required).
*
* Returns: Pointer to the next token found. NULL when no more tokens are found.
*****************************************************************************
*/
char *
bcmstrtok(char **string, const char *delimiters, char *tokdelim)
{
unsigned char *str;
unsigned long map[8];
int count;
char *nextoken;
if (tokdelim != NULL) {
/* Prime the token delimiter */
*tokdelim = '\0';
}
/* Clear control map */
for (count = 0; count < 8; count++) {
map[count] = 0;
}
/* Set bits in delimiter table */
do {
map[*delimiters >> 5] |= (1 << (*delimiters & 31));
}
while (*delimiters++);
str = (unsigned char*)*string;
/* Find beginning of token (skip over leading delimiters). Note that
* there is no token iff this loop sets str to point to the terminal
* null (*str == '\0')
*/
while (((map[*str >> 5] & (1 << (*str & 31))) && *str) || (*str == ' ')) {
str++;
}
nextoken = (char*)str;
/* Find the end of the token. If it is not the end of the string,
* put a null there.
*/
for (; *str; str++) {
if (map[*str >> 5] & (1 << (*str & 31))) {
if (tokdelim != NULL) {
*tokdelim = *str;
}
*str++ = '\0';
break;
}
}
*string = (char*)str;
/* Determine if a token has been found. */
if (nextoken == (char *) str) {
return NULL;
}
else {
return nextoken;
}
}
#define xToLower(C) \
((C >= 'A' && C <= 'Z') ? (char)((int)C - (int)'A' + (int)'a') : C)
/****************************************************************************
* Function: bcmstricmp
*
* Purpose: Compare to strings case insensitively.
*
* Parameters: s1 (in) First string to compare.
* s2 (in) Second string to compare.
*
* Returns: Return 0 if the two strings are equal, -1 if t1 < t2 and 1 if
* t1 > t2, when ignoring case sensitivity.
*****************************************************************************
*/
int
bcmstricmp(const char *s1, const char *s2)
{
char dc, sc;
while (*s2 && *s1) {
dc = xToLower(*s1);
sc = xToLower(*s2);
if (dc < sc) return -1;
if (dc > sc) return 1;
s1++;
s2++;
}
if (*s1 && !*s2) return 1;
if (!*s1 && *s2) return -1;
return 0;
}
/****************************************************************************
* Function: bcmstrnicmp
*
* Purpose: Compare to strings case insensitively, upto a max of 'cnt'
* characters.
*
* Parameters: s1 (in) First string to compare.
* s2 (in) Second string to compare.
* cnt (in) Max characters to compare.
*
* Returns: Return 0 if the two strings are equal, -1 if t1 < t2 and 1 if
* t1 > t2, when ignoring case sensitivity.
*****************************************************************************
*/
int
bcmstrnicmp(const char* s1, const char* s2, int cnt)
{
char dc, sc;
while (*s2 && *s1 && cnt) {
dc = xToLower(*s1);
sc = xToLower(*s2);
if (dc < sc) return -1;
if (dc > sc) return 1;
s1++;
s2++;
cnt--;
}
if (!cnt) return 0;
if (*s1 && !*s2) return 1;
if (!*s1 && *s2) return -1;
return 0;
}
/* parse a xx:xx:xx:xx:xx:xx format ethernet address */
int
bcm_ether_atoe(const char *p, struct ether_addr *ea)
{
int i = 0;
char *ep;
for (;;) {
ea->octet[i++] = (char) bcm_strtoul(p, &ep, 16);
p = ep;
if (!*p++ || i == 6)
break;
}
return (i == 6);
}
int
bcm_atoipv4(const char *p, struct ipv4_addr *ip)
{
int i = 0;
char *c;
for (;;) {
ip->addr[i++] = (uint8)bcm_strtoul(p, &c, 0);
if (*c++ != '.' || i == IPV4_ADDR_LEN)
break;
p = c;
}
return (i == IPV4_ADDR_LEN);
}
#endif /* !BCMROMOFFLOAD_EXCLUDE_BCMUTILS_FUNCS */
#if defined(CONFIG_USBRNDIS_RETAIL) || defined(NDIS_MINIPORT_DRIVER)
/* registry routine buffer preparation utility functions:
* parameter order is like strncpy, but returns count
* of bytes copied. Minimum bytes copied is null char(1)/wchar(2)
*/
ulong
wchar2ascii(char *abuf, ushort *wbuf, ushort wbuflen, ulong abuflen)
{
ulong copyct = 1;
ushort i;
if (abuflen == 0)
return 0;
/* wbuflen is in bytes */
wbuflen /= sizeof(ushort);
for (i = 0; i < wbuflen; ++i) {
if (--abuflen == 0)
break;
*abuf++ = (char) *wbuf++;
++copyct;
}
*abuf = '\0';
return copyct;
}
#endif /* CONFIG_USBRNDIS_RETAIL || NDIS_MINIPORT_DRIVER */
char *
bcm_ether_ntoa(const struct ether_addr *ea, char *buf)
{
static const char hex[] =
{
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
const uint8 *octet = ea->octet;
char *p = buf;
int i;
for (i = 0; i < 6; i++, octet++) {
*p++ = hex[(*octet >> 4) & 0xf];
*p++ = hex[*octet & 0xf];
*p++ = ':';
}
*(p-1) = '\0';
return (buf);
}
char *
bcm_ip_ntoa(struct ipv4_addr *ia, char *buf)
{
snprintf(buf, 16, "%d.%d.%d.%d",
ia->addr[0], ia->addr[1], ia->addr[2], ia->addr[3]);
return (buf);
}
char *
bcm_ipv6_ntoa(void *ipv6, char *buf)
{
/* Implementing RFC 5952 Sections 4 + 5 */
/* Not thoroughly tested */
uint16 tmp[8];
uint16 *a = &tmp[0];
char *p = buf;
int i, i_max = -1, cnt = 0, cnt_max = 1;
uint8 *a4 = NULL;
memcpy((uint8 *)&tmp[0], (uint8 *)ipv6, IPV6_ADDR_LEN);
for (i = 0; i < IPV6_ADDR_LEN/2; i++) {
if (a[i]) {
if (cnt > cnt_max) {
cnt_max = cnt;
i_max = i - cnt;
}
cnt = 0;
} else
cnt++;
}
if (cnt > cnt_max) {
cnt_max = cnt;
i_max = i - cnt;
}
if (i_max == 0 &&
/* IPv4-translated: ::ffff:0:a.b.c.d */
((cnt_max == 4 && a[4] == 0xffff && a[5] == 0) ||
/* IPv4-mapped: ::ffff:a.b.c.d */
(cnt_max == 5 && a[5] == 0xffff)))
a4 = (uint8*) (a + 6);
for (i = 0; i < IPV6_ADDR_LEN/2; i++) {
if ((uint8*) (a + i) == a4) {
snprintf(p, 16, ":%u.%u.%u.%u", a4[0], a4[1], a4[2], a4[3]);
break;
} else if (i == i_max) {
*p++ = ':';
i += cnt_max - 1;
p[0] = ':';
p[1] = '\0';
} else {
if (i)
*p++ = ':';
p += snprintf(p, 8, "%x", ntoh16(a[i]));
}
}
return buf;
}
#ifdef BCMDRIVER
void
bcm_mdelay(uint ms)
{
uint i;
for (i = 0; i < ms; i++) {
OSL_DELAY(1000);
}
}
#if defined(DHD_DEBUG)
/* pretty hex print a pkt buffer chain */
void
prpkt(const char *msg, osl_t *osh, void *p0)
{
void *p;
if (msg && (msg[0] != '\0'))
printf("%s:\n", msg);
for (p = p0; p; p = PKTNEXT(osh, p))
prhex(NULL, PKTDATA(osh, p), PKTLEN(osh, p));
}
#endif
/* Takes an Ethernet frame and sets out-of-bound PKTPRIO.
* Also updates the inplace vlan tag if requested.
* For debugging, it returns an indication of what it did.
*/
uint BCMFASTPATH
pktsetprio(void *pkt, bool update_vtag)
{
struct ether_header *eh;
struct ethervlan_header *evh;
uint8 *pktdata;
int priority = 0;
int rc = 0;
pktdata = (uint8 *)PKTDATA(OSH_NULL, pkt);
ASSERT(ISALIGNED((uintptr)pktdata, sizeof(uint16)));
eh = (struct ether_header *) pktdata;
if (eh->ether_type == hton16(ETHER_TYPE_8021Q)) {
uint16 vlan_tag;
int vlan_prio, dscp_prio = 0;
evh = (struct ethervlan_header *)eh;
vlan_tag = ntoh16(evh->vlan_tag);
vlan_prio = (int) (vlan_tag >> VLAN_PRI_SHIFT) & VLAN_PRI_MASK;
if ((evh->ether_type == hton16(ETHER_TYPE_IP)) ||
(evh->ether_type == hton16(ETHER_TYPE_IPV6))) {
uint8 *ip_body = pktdata + sizeof(struct ethervlan_header);
uint8 tos_tc = IP_TOS46(ip_body);
dscp_prio = (int)(tos_tc >> IPV4_TOS_PREC_SHIFT);
}
/* DSCP priority gets precedence over 802.1P (vlan tag) */
if (dscp_prio != 0) {
priority = dscp_prio;
rc |= PKTPRIO_VDSCP;
} else {
priority = vlan_prio;
rc |= PKTPRIO_VLAN;
}
/*
* If the DSCP priority is not the same as the VLAN priority,
* then overwrite the priority field in the vlan tag, with the
* DSCP priority value. This is required for Linux APs because
* the VLAN driver on Linux, overwrites the skb->priority field
* with the priority value in the vlan tag
*/
if (update_vtag && (priority != vlan_prio)) {
vlan_tag &= ~(VLAN_PRI_MASK << VLAN_PRI_SHIFT);
vlan_tag |= (uint16)priority << VLAN_PRI_SHIFT;
evh->vlan_tag = hton16(vlan_tag);
rc |= PKTPRIO_UPD;
}
} else if ((eh->ether_type == hton16(ETHER_TYPE_IP)) ||
(eh->ether_type == hton16(ETHER_TYPE_IPV6))) {
uint8 *ip_body = pktdata + sizeof(struct ether_header);
uint8 tos_tc = IP_TOS46(ip_body);
uint8 dscp = tos_tc >> IPV4_TOS_DSCP_SHIFT;
switch (dscp) {
case DSCP_EF:
priority = PRIO_8021D_VO;
break;
case DSCP_AF31:
case DSCP_AF32:
case DSCP_AF33:
priority = PRIO_8021D_CL;
break;
case DSCP_AF21:
case DSCP_AF22:
case DSCP_AF23:
case DSCP_AF11:
case DSCP_AF12:
case DSCP_AF13:
priority = PRIO_8021D_EE;
break;
default:
priority = (int)(tos_tc >> IPV4_TOS_PREC_SHIFT);
break;
}
rc |= PKTPRIO_DSCP;
}
ASSERT(priority >= 0 && priority <= MAXPRIO);
PKTSETPRIO(pkt, priority);
return (rc | priority);
}
/* lookup user priority for specified DSCP */
static uint8
dscp2up(uint8 *up_table, uint8 dscp)
{
uint8 up = 255;
/* lookup up from table if parameters valid */
if (up_table != NULL && dscp < UP_TABLE_MAX) {
up = up_table[dscp];
}
/* 255 is unused value so return up from dscp */
if (up == 255) {
up = dscp >> (IPV4_TOS_PREC_SHIFT - IPV4_TOS_DSCP_SHIFT);
}
return up;
}
/* set user priority by QoS Map Set table (UP table), table size is UP_TABLE_MAX */
uint BCMFASTPATH
pktsetprio_qms(void *pkt, uint8* up_table, bool update_vtag)
{
if (up_table) {
uint8 *pktdata;
uint pktlen;
uint8 dscp;
uint up = 0;
uint rc = 0;
pktdata = (uint8 *)PKTDATA(OSH_NULL, pkt);
pktlen = PKTLEN(OSH_NULL, pkt);
if (pktgetdscp(pktdata, pktlen, &dscp)) {
rc = PKTPRIO_DSCP;
up = dscp2up(up_table, dscp);
PKTSETPRIO(pkt, up);
printf("dscp=%d, up=%d\n", dscp, up);
}
return (rc | up);
}
else {
return pktsetprio(pkt, update_vtag);
}
}
/* Returns TRUE and DSCP if IP header found, FALSE otherwise.
*/
bool BCMFASTPATH
pktgetdscp(uint8 *pktdata, uint pktlen, uint8 *dscp)
{
struct ether_header *eh;
struct ethervlan_header *evh;
uint8 *ip_body;
bool rc = FALSE;
/* minimum length is ether header and IP header */
if (pktlen < sizeof(struct ether_header) + IPV4_MIN_HEADER_LEN)
return FALSE;
eh = (struct ether_header *) pktdata;
if (eh->ether_type == HTON16(ETHER_TYPE_IP)) {
ip_body = pktdata + sizeof(struct ether_header);
*dscp = IP_DSCP46(ip_body);
rc = TRUE;
}
else if (eh->ether_type == HTON16(ETHER_TYPE_8021Q)) {
evh = (struct ethervlan_header *)eh;
/* minimum length is ethervlan header and IP header */
if (pktlen >= sizeof(struct ethervlan_header) + IPV4_MIN_HEADER_LEN &&
evh->ether_type == HTON16(ETHER_TYPE_IP)) {
ip_body = pktdata + sizeof(struct ethervlan_header);
*dscp = IP_DSCP46(ip_body);
rc = TRUE;
}
}
return rc;
}
/* The 0.5KB string table is not removed by compiler even though it's unused */
static char bcm_undeferrstr[32];
static const char *bcmerrorstrtable[] = BCMERRSTRINGTABLE;
/* Convert the error codes into related error strings */
const char *
bcmerrorstr(int bcmerror)
{
/* check if someone added a bcmerror code but forgot to add errorstring */
ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(bcmerrorstrtable) - 1));
if (bcmerror > 0 || bcmerror < BCME_LAST) {
snprintf(bcm_undeferrstr, sizeof(bcm_undeferrstr), "Undefined error %d", bcmerror);
return bcm_undeferrstr;
}
ASSERT(strlen(bcmerrorstrtable[-bcmerror]) < BCME_STRLEN);
return bcmerrorstrtable[-bcmerror];
}
/* iovar table lookup */
/* could mandate sorted tables and do a binary search */
const bcm_iovar_t*
bcm_iovar_lookup(const bcm_iovar_t *table, const char *name)
{
const bcm_iovar_t *vi;
const char *lookup_name;
/* skip any ':' delimited option prefixes */
lookup_name = strrchr(name, ':');
if (lookup_name != NULL)
lookup_name++;
else
lookup_name = name;
ASSERT(table != NULL);
for (vi = table; vi->name; vi++) {
if (!strcmp(vi->name, lookup_name))
return vi;
}
/* ran to end of table */
return NULL; /* var name not found */
}
int
bcm_iovar_lencheck(const bcm_iovar_t *vi, void *arg, int len, bool set)
{
int bcmerror = 0;
/* length check on io buf */
switch (vi->type) {
case IOVT_BOOL:
case IOVT_INT8:
case IOVT_INT16:
case IOVT_INT32:
case IOVT_UINT8:
case IOVT_UINT16:
case IOVT_UINT32:
/* all integers are int32 sized args at the ioctl interface */
if (len < (int)sizeof(int)) {
bcmerror = BCME_BUFTOOSHORT;
}
break;
case IOVT_BUFFER:
/* buffer must meet minimum length requirement */
if (len < vi->minlen) {
bcmerror = BCME_BUFTOOSHORT;
}
break;
case IOVT_VOID:
if (!set) {
/* Cannot return nil... */
bcmerror = BCME_UNSUPPORTED;
} else if (len) {
/* Set is an action w/o parameters */
bcmerror = BCME_BUFTOOLONG;
}
break;
default:
/* unknown type for length check in iovar info */
ASSERT(0);
bcmerror = BCME_UNSUPPORTED;
}
return bcmerror;
}
#endif /* BCMDRIVER */
uint8 *
bcm_write_tlv(int type, const void *data, int datalen, uint8 *dst)
{
uint8 *new_dst = dst;
bcm_tlv_t *dst_tlv = (bcm_tlv_t *)dst;
/* dst buffer should always be valid */
ASSERT(dst);
/* data len must be within valid range */
ASSERT((datalen >= 0) && (datalen <= BCM_TLV_MAX_DATA_SIZE));
/* source data buffer pointer should be valid, unless datalen is 0
* meaning no data with this TLV
*/
ASSERT((data != NULL) || (datalen == 0));
/* only do work if the inputs are valid
* - must have a dst to write to AND
* - datalen must be within range AND
* - the source data pointer must be non-NULL if datalen is non-zero
* (this last condition detects datalen > 0 with a NULL data pointer)
*/
if ((dst != NULL) &&
((datalen >= 0) && (datalen <= BCM_TLV_MAX_DATA_SIZE)) &&
((data != NULL) || (datalen == 0))) {
/* write type, len fields */
dst_tlv->id = (uint8)type;
dst_tlv->len = (uint8)datalen;
/* if data is present, copy to the output buffer and update
* pointer to output buffer
*/
if (datalen > 0) {
memcpy(dst_tlv->data, data, datalen);
}
/* update the output destination poitner to point past
* the TLV written
*/
new_dst = dst + BCM_TLV_HDR_SIZE + datalen;
}
return (new_dst);
}
uint8 *
bcm_write_tlv_safe(int type, const void *data, int datalen, uint8 *dst, int dst_maxlen)
{
uint8 *new_dst = dst;
if ((datalen >= 0) && (datalen <= BCM_TLV_MAX_DATA_SIZE)) {
/* if len + tlv hdr len is more than destlen, don't do anything
* just return the buffer untouched
*/
if ((int)(datalen + BCM_TLV_HDR_SIZE) <= dst_maxlen) {
new_dst = bcm_write_tlv(type, data, datalen, dst);
}
}
return (new_dst);
}
uint8 *
bcm_copy_tlv(const void *src, uint8 *dst)
{
uint8 *new_dst = dst;
const bcm_tlv_t *src_tlv = (const bcm_tlv_t *)src;
uint totlen;
ASSERT(dst && src);
if (dst && src) {
totlen = BCM_TLV_HDR_SIZE + src_tlv->len;
memcpy(dst, src_tlv, totlen);
new_dst = dst + totlen;
}
return (new_dst);
}
uint8 *bcm_copy_tlv_safe(const void *src, uint8 *dst, int dst_maxlen)
{
uint8 *new_dst = dst;
const bcm_tlv_t *src_tlv = (const bcm_tlv_t *)src;
ASSERT(src);
if (src) {
if (bcm_valid_tlv(src_tlv, dst_maxlen)) {
new_dst = bcm_copy_tlv(src, dst);
}
}
return (new_dst);
}
#if !defined(BCMROMOFFLOAD_EXCLUDE_BCMUTILS_FUNCS)
/*******************************************************************************
* crc8
*
* Computes a crc8 over the input data using the polynomial:
*
* x^8 + x^7 +x^6 + x^4 + x^2 + 1
*
* The caller provides the initial value (either CRC8_INIT_VALUE
* or the previous returned value) to allow for processing of
* discontiguous blocks of data. When generating the CRC the
* caller is responsible for complementing the final return value
* and inserting it into the byte stream. When checking, a final
* return value of CRC8_GOOD_VALUE indicates a valid CRC.
*
* Reference: Dallas Semiconductor Application Note 27
* Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms",
* ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd.,
* ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt
*
* ****************************************************************************
*/
static const uint8 crc8_table[256] = {
0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F
};
#define CRC_INNER_LOOP(n, c, x) \
(c) = ((c) >> 8) ^ crc##n##_table[((c) ^ (x)) & 0xff]
uint8
hndcrc8(
uint8 *pdata, /* pointer to array of data to process */
uint nbytes, /* number of input data bytes to process */
uint8 crc /* either CRC8_INIT_VALUE or previous return value */
)
{
/* hard code the crc loop instead of using CRC_INNER_LOOP macro
* to avoid the undefined and unnecessary (uint8 >> 8) operation.
*/
while (nbytes-- > 0)
crc = crc8_table[(crc ^ *pdata++) & 0xff];
return crc;
}
/*******************************************************************************
* crc16
*
* Computes a crc16 over the input data using the polynomial:
*
* x^16 + x^12 +x^5 + 1
*
* The caller provides the initial value (either CRC16_INIT_VALUE
* or the previous returned value) to allow for processing of
* discontiguous blocks of data. When generating the CRC the
* caller is responsible for complementing the final return value
* and inserting it into the byte stream. When checking, a final
* return value of CRC16_GOOD_VALUE indicates a valid CRC.
*
* Reference: Dallas Semiconductor Application Note 27
* Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms",
* ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd.,
* ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt
*
* ****************************************************************************
*/
static const uint16 crc16_table[256] = {
0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF,
0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7,
0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E,
0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876,
0x2102, 0x308B, 0x0210, 0x1399, 0x6726, 0x76AF, 0x4434, 0x55BD,
0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5,
0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C,
0xBDCB, 0xAC42, 0x9ED9, 0x8F50, 0xFBEF, 0xEA66, 0xD8FD, 0xC974,
0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB,
0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3,
0x5285, 0x430C, 0x7197, 0x601E, 0x14A1, 0x0528, 0x37B3, 0x263A,
0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72,
0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9,
0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5, 0xA96A, 0xB8E3, 0x8A78, 0x9BF1,
0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738,
0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70,
0x8408, 0x9581, 0xA71A, 0xB693, 0xC22C, 0xD3A5, 0xE13E, 0xF0B7,
0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF,
0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036,
0x18C1, 0x0948, 0x3BD3, 0x2A5A, 0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E,
0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5,
0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD,
0xB58B, 0xA402, 0x9699, 0x8710, 0xF3AF, 0xE226, 0xD0BD, 0xC134,
0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C,
0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3,
0x4A44, 0x5BCD, 0x6956, 0x78DF, 0x0C60, 0x1DE9, 0x2F72, 0x3EFB,
0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232,
0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A,
0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1,
0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9,
0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330,
0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78
};
uint16
hndcrc16(
uint8 *pdata, /* pointer to array of data to process */
uint nbytes, /* number of input data bytes to process */
uint16 crc /* either CRC16_INIT_VALUE or previous return value */
)
{
while (nbytes-- > 0)
CRC_INNER_LOOP(16, crc, *pdata++);
return crc;
}
static const uint32 crc32_table[256] = {
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
};
/*
* crc input is CRC32_INIT_VALUE for a fresh start, or previous return value if
* accumulating over multiple pieces.
*/
uint32
hndcrc32(uint8 *pdata, uint nbytes, uint32 crc)
{
uint8 *pend;
pend = pdata + nbytes;
while (pdata < pend)
CRC_INNER_LOOP(32, crc, *pdata++);
return crc;
}
#ifdef notdef
#define CLEN 1499 /* CRC Length */
#define CBUFSIZ (CLEN+4)
#define CNBUFS 5 /* # of bufs */
void
testcrc32(void)
{
uint j, k, l;
uint8 *buf;
uint len[CNBUFS];
uint32 crcr;
uint32 crc32tv[CNBUFS] =
{0xd2cb1faa, 0xd385c8fa, 0xf5b4f3f3, 0x55789e20, 0x00343110};
ASSERT((buf = MALLOC(CBUFSIZ*CNBUFS)) != NULL);
/* step through all possible alignments */
for (l = 0; l <= 4; l++) {
for (j = 0; j < CNBUFS; j++) {
len[j] = CLEN;
for (k = 0; k < len[j]; k++)
*(buf + j*CBUFSIZ + (k+l)) = (j+k) & 0xff;
}
for (j = 0; j < CNBUFS; j++) {
crcr = crc32(buf + j*CBUFSIZ + l, len[j], CRC32_INIT_VALUE);
ASSERT(crcr == crc32tv[j]);
}
}
MFREE(buf, CBUFSIZ*CNBUFS);
return;
}
#endif /* notdef */
/*
* Advance from the current 1-byte tag/1-byte length/variable-length value
* triple, to the next, returning a pointer to the next.
* If the current or next TLV is invalid (does not fit in given buffer length),
* NULL is returned.
* *buflen is not modified if the TLV elt parameter is invalid, or is decremented
* by the TLV parameter's length if it is valid.
*/
bcm_tlv_t *
bcm_next_tlv(bcm_tlv_t *elt, int *buflen)
{
int len;
/* validate current elt */
if (!bcm_valid_tlv(elt, *buflen)) {
return NULL;
}
/* advance to next elt */
len = elt->len;
elt = (bcm_tlv_t*)(elt->data + len);
*buflen -= (TLV_HDR_LEN + len);
/* validate next elt */
if (!bcm_valid_tlv(elt, *buflen)) {
return NULL;
}
return elt;
}
/*
* Traverse a string of 1-byte tag/1-byte length/variable-length value
* triples, returning a pointer to the substring whose first element
* matches tag
*/
bcm_tlv_t *
bcm_parse_tlvs(void *buf, int buflen, uint key)
{
bcm_tlv_t *elt;
int totlen;
if ((elt = (bcm_tlv_t*)buf) == NULL) {
return NULL;
}
totlen = buflen;
/* find tagged parameter */
while (totlen >= TLV_HDR_LEN) {
int len = elt->len;
/* validate remaining totlen */
if ((elt->id == key) && (totlen >= (int)(len + TLV_HDR_LEN))) {
return (elt);
}
elt = (bcm_tlv_t*)((uint8*)elt + (len + TLV_HDR_LEN));
totlen -= (len + TLV_HDR_LEN);
}
return NULL;
}
/*
* Traverse a string of 1-byte tag/1-byte length/variable-length value
* triples, returning a pointer to the substring whose first element
* matches tag
* return NULL if not found or length field < min_varlen
*/
bcm_tlv_t *
bcm_parse_tlvs_min_bodylen(void *buf, int buflen, uint key, int min_bodylen)
{
bcm_tlv_t * ret = bcm_parse_tlvs(buf, buflen, key);
if (ret == NULL || ret->len < min_bodylen) {
return NULL;
}
return ret;
}
/*
* Traverse a string of 1-byte tag/1-byte length/variable-length value
* triples, returning a pointer to the substring whose first element
* matches tag. Stop parsing when we see an element whose ID is greater
* than the target key.
*/
bcm_tlv_t *
bcm_parse_ordered_tlvs(void *buf, int buflen, uint key)
{
bcm_tlv_t *elt;
int totlen;
elt = (bcm_tlv_t*)buf;
totlen = buflen;
/* find tagged parameter */
while (totlen >= TLV_HDR_LEN) {
uint id = elt->id;
int len = elt->len;
/* Punt if we start seeing IDs > than target key */
if (id > key) {
return (NULL);
}
/* validate remaining totlen */
if ((id == key) && (totlen >= (int)(len + TLV_HDR_LEN))) {
return (elt);
}
elt = (bcm_tlv_t*)((uint8*)elt + (len + TLV_HDR_LEN));
totlen -= (len + TLV_HDR_LEN);
}
return NULL;
}
#endif /* !BCMROMOFFLOAD_EXCLUDE_BCMUTILS_FUNCS */
#if defined(WLMSG_PRHDRS) || defined(WLMSG_PRPKT) || defined(WLMSG_ASSOC) || \
defined(DHD_DEBUG)
int
bcm_format_field(const bcm_bit_desc_ex_t *bd, uint32 flags, char* buf, int len)
{
int i, slen = 0;
uint32 bit, mask;
const char *name;
mask = bd->mask;
if (len < 2 || !buf)
return 0;
buf[0] = '\0';
for (i = 0; (name = bd->bitfield[i].name) != NULL; i++) {
bit = bd->bitfield[i].bit;
if ((flags & mask) == bit) {
if (len > (int)strlen(name)) {
strcpy(buf, name);
}
break;
}
}
return slen;
}
int
bcm_format_flags(const bcm_bit_desc_t *bd, uint32 flags, char* buf, int len)
{
int i;
char* p = buf;
char hexstr[16];
int slen = 0, nlen = 0;
uint32 bit;
const char* name;
if (len < 2 || !buf)
return 0;
buf[0] = '\0';
for (i = 0; flags != 0; i++) {
bit = bd[i].bit;
name = bd[i].name;
if (bit == 0 && flags != 0) {
/* print any unnamed bits */
snprintf(hexstr, 16, "0x%X", flags);
name = hexstr;
flags = 0; /* exit loop */
} else if ((flags & bit) == 0)
continue;
flags &= ~bit;
nlen = strlen(name);
slen += nlen;
/* count btwn flag space */
if (flags != 0)
slen += 1;
/* need NULL char as well */
if (len <= slen)
break;
/* copy NULL char but don't count it */
memcpy(p, name, nlen + 1);
p += nlen;
/* copy btwn flag space and NULL char */
if (flags != 0)
p += snprintf(p, 2, " ");
}
/* indicate the str was too short */
if (flags != 0) {
p += snprintf(p, 2, ">");
}
return (int)(p - buf);
}
#endif
/* print bytes formatted as hex to a string. return the resulting string length */
int
bcm_format_hex(char *str, const void *bytes, int len)
{
int i;
char *p = str;
const uint8 *src = (const uint8*)bytes;
for (i = 0; i < len; i++) {
p += snprintf(p, 3, "%02X", *src);
src++;
}
return (int)(p - str);
}
/* pretty hex print a contiguous buffer */
void
prhex(const char *msg, uchar *buf, uint nbytes)
{
char line[128], *p;
int len = sizeof(line);
int nchar;
uint i;
if (msg && (msg[0] != '\0'))
printf("%s:\n", msg);
p = line;
for (i = 0; i < nbytes; i++) {
if (i % 16 == 0) {
nchar = snprintf(p, len, " %04d: ", i); /* line prefix */
p += nchar;
len -= nchar;
}
if (len > 0) {
nchar = snprintf(p, len, "%02x ", buf[i]);
p += nchar;
len -= nchar;
}
if (i % 16 == 15) {
printf("%s\n", line); /* flush line */
p = line;
len = sizeof(line);
}
}
/* flush last partial line */
if (p != line)
printf("%s\n", line);
}
static const char *crypto_algo_names[] = {
"NONE",
"WEP1",
"TKIP",
"WEP128",
"AES_CCM",
"AES_OCB_MSDU",
"AES_OCB_MPDU",
"NALG",
"UNDEF",
"UNDEF",
"UNDEF",
"WAPI",
"PMK",
"BIP",
"AES_GCM",
"AES_CCM256",
"AES_GCM256",
"BIP_CMAC256",
"BIP_GMAC",
"BIP_GMAC256",
"UNDEF"
};
const char *
bcm_crypto_algo_name(uint algo)
{
return (algo < ARRAYSIZE(crypto_algo_names)) ? crypto_algo_names[algo] : "ERR";
}
char *
bcm_chipname(uint chipid, char *buf, uint len)
{
const char *fmt;
fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x";
snprintf(buf, len, fmt, chipid);
return buf;
}
/* Produce a human-readable string for boardrev */
char *
bcm_brev_str(uint32 brev, char *buf)
{
if (brev < 0x100)
snprintf(buf, 8, "%d.%d", (brev & 0xf0) >> 4, brev & 0xf);
else
snprintf(buf, 8, "%c%03x", ((brev & 0xf000) == 0x1000) ? 'P' : 'A', brev & 0xfff);
return (buf);
}
#define BUFSIZE_TODUMP_ATONCE 512 /* Buffer size */
/* dump large strings to console */
void
printbig(char *buf)
{
uint len, max_len;
char c;
len = (uint)strlen(buf);
max_len = BUFSIZE_TODUMP_ATONCE;
while (len > max_len) {
c = buf[max_len];
buf[max_len] = '\0';
printf("%s", buf);
buf[max_len] = c;
buf += max_len;
len -= max_len;
}
/* print the remaining string */
printf("%s\n", buf);
return;
}
/* routine to dump fields in a fileddesc structure */
uint
bcmdumpfields(bcmutl_rdreg_rtn read_rtn, void *arg0, uint arg1, struct fielddesc *fielddesc_array,
char *buf, uint32 bufsize)
{
uint filled_len;
int len;
struct fielddesc *cur_ptr;
filled_len = 0;
cur_ptr = fielddesc_array;
while (bufsize > 1) {
if (cur_ptr->nameandfmt == NULL)
break;
len = snprintf(buf, bufsize, cur_ptr->nameandfmt,
read_rtn(arg0, arg1, cur_ptr->offset));
/* check for snprintf overflow or error */
if (len < 0 || (uint32)len >= bufsize)
len = bufsize - 1;
buf += len;
bufsize -= len;
filled_len += len;
cur_ptr++;
}
return filled_len;
}
uint
bcm_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
{
uint len;
len = (uint)strlen(name) + 1;
if ((len + datalen) > buflen)
return 0;
strncpy(buf, name, buflen);
/* append data onto the end of the name string */
if (data && datalen != 0) {
memcpy(&buf[len], data, datalen);
len += datalen;
}
return len;
}
/* Quarter dBm units to mW
* Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153
* Table is offset so the last entry is largest mW value that fits in
* a uint16.
*/
#define QDBM_OFFSET 153 /* Offset for first entry */
#define QDBM_TABLE_LEN 40 /* Table size */
/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET.
* Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2
*/
#define QDBM_TABLE_LOW_BOUND 6493 /* Low bound */
/* Largest mW value that will round down to the last table entry,
* QDBM_OFFSET + QDBM_TABLE_LEN-1.
* Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) + mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2.
*/
#define QDBM_TABLE_HIGH_BOUND 64938 /* High bound */
static const uint16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = {
/* qdBm: +0 +1 +2 +3 +4 +5 +6 +7 */
/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000,
/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849,
/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119,
/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811,
/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096
};
uint16
bcm_qdbm_to_mw(uint8 qdbm)
{
uint factor = 1;
int idx = qdbm - QDBM_OFFSET;
if (idx >= QDBM_TABLE_LEN) {
/* clamp to max uint16 mW value */
return 0xFFFF;
}
/* scale the qdBm index up to the range of the table 0-40
* where an offset of 40 qdBm equals a factor of 10 mW.
*/
while (idx < 0) {
idx += 40;
factor *= 10;
}
/* return the mW value scaled down to the correct factor of 10,
* adding in factor/2 to get proper rounding.
*/
return ((nqdBm_to_mW_map[idx] + factor/2) / factor);
}
uint8
bcm_mw_to_qdbm(uint16 mw)
{
uint8 qdbm;
int offset;
uint mw_uint = mw;
uint boundary;
/* handle boundary case */
if (mw_uint <= 1)
return 0;
offset = QDBM_OFFSET;
/* move mw into the range of the table */
while (mw_uint < QDBM_TABLE_LOW_BOUND) {
mw_uint *= 10;
offset -= 40;
}
for (qdbm = 0; qdbm < QDBM_TABLE_LEN-1; qdbm++) {
boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm+1] -
nqdBm_to_mW_map[qdbm])/2;
if (mw_uint < boundary) break;
}
qdbm += (uint8)offset;
return (qdbm);
}
uint
bcm_bitcount(uint8 *bitmap, uint length)
{
uint bitcount = 0, i;
uint8 tmp;
for (i = 0; i < length; i++) {
tmp = bitmap[i];
while (tmp) {
bitcount++;
tmp &= (tmp - 1);
}
}
return bitcount;
}
#ifdef BCMDRIVER
/* Initialization of bcmstrbuf structure */
void
bcm_binit(struct bcmstrbuf *b, char *buf, uint size)
{
b->origsize = b->size = size;
b->origbuf = b->buf = buf;
}
/* Buffer sprintf wrapper to guard against buffer overflow */
int
bcm_bprintf(struct bcmstrbuf *b, const char *fmt, ...)
{
va_list ap;
int r;
va_start(ap, fmt);
r = vsnprintf(b->buf, b->size, fmt, ap);
/* Non Ansi C99 compliant returns -1,
* Ansi compliant return r >= b->size,
* bcmstdlib returns 0, handle all
*/
/* r == 0 is also the case when strlen(fmt) is zero.
* typically the case when "" is passed as argument.
*/
if ((r == -1) || (r >= (int)b->size)) {
b->size = 0;
} else {
b->size -= r;
b->buf += r;
}
va_end(ap);
return r;
}
void
bcm_bprhex(struct bcmstrbuf *b, const char *msg, bool newline, uint8 *buf, int len)
{
int i;
if (msg != NULL && msg[0] != '\0')
bcm_bprintf(b, "%s", msg);
for (i = 0; i < len; i ++)
bcm_bprintf(b, "%02X", buf[i]);
if (newline)
bcm_bprintf(b, "\n");
}
void
bcm_inc_bytes(uchar *num, int num_bytes, uint8 amount)
{
int i;
for (i = 0; i < num_bytes; i++) {
num[i] += amount;
if (num[i] >= amount)
break;
amount = 1;
}
}
int
bcm_cmp_bytes(const uchar *arg1, const uchar *arg2, uint8 nbytes)
{
int i;
for (i = nbytes - 1; i >= 0; i--) {
if (arg1[i] != arg2[i])
return (arg1[i] - arg2[i]);
}
return 0;
}
void
bcm_print_bytes(const char *name, const uchar *data, int len)
{
int i;
int per_line = 0;
printf("%s: %d \n", name ? name : "", len);
for (i = 0; i < len; i++) {
printf("%02x ", *data++);
per_line++;
if (per_line == 16) {
per_line = 0;
printf("\n");
}
}
printf("\n");
}
/* Look for vendor-specific IE with specified OUI and optional type */
bcm_tlv_t *
bcm_find_vendor_ie(void *tlvs, int tlvs_len, const char *voui, uint8 *type, int type_len)
{
bcm_tlv_t *ie;
uint8 ie_len;
ie = (bcm_tlv_t*)tlvs;
/* make sure we are looking at a valid IE */
if (ie == NULL || !bcm_valid_tlv(ie, tlvs_len)) {
return NULL;
}
/* Walk through the IEs looking for an OUI match */
do {
ie_len = ie->len;
if ((ie->id == DOT11_MNG_PROPR_ID) &&
(ie_len >= (DOT11_OUI_LEN + type_len)) &&
!bcmp(ie->data, voui, DOT11_OUI_LEN))
{
/* compare optional type */
if (type_len == 0 ||
!bcmp(&ie->data[DOT11_OUI_LEN], type, type_len)) {
return (ie); /* a match */
}
}
} while ((ie = bcm_next_tlv(ie, &tlvs_len)) != NULL);
return NULL;
}
#if defined(WLTINYDUMP) || defined(WLMSG_INFORM) || defined(WLMSG_ASSOC) || \
defined(WLMSG_PRPKT) || defined(WLMSG_WSEC)
#define SSID_FMT_BUF_LEN ((4 * DOT11_MAX_SSID_LEN) + 1)
int
bcm_format_ssid(char* buf, const uchar ssid[], uint ssid_len)
{
uint i, c;
char *p = buf;
char *endp = buf + SSID_FMT_BUF_LEN;
if (ssid_len > DOT11_MAX_SSID_LEN) ssid_len = DOT11_MAX_SSID_LEN;
for (i = 0; i < ssid_len; i++) {
c = (uint)ssid[i];
if (c == '\\') {
*p++ = '\\';
*p++ = '\\';
} else if (bcm_isprint((uchar)c)) {
*p++ = (char)c;
} else {
p += snprintf(p, (endp - p), "\\x%02X", c);
}
}
*p = '\0';
ASSERT(p < endp);
return (int)(p - buf);
}
#endif
#endif /* BCMDRIVER */
/*
* ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file and ending in a NUL.
* also accepts nvram files which are already in the format of <var1>=<value>\0\<var2>=<value2>\0
* Removes carriage returns, empty lines, comment lines, and converts newlines to NULs.
* Shortens buffer as needed and pads with NULs. End of buffer is marked by two NULs.
*/
unsigned int
process_nvram_vars(char *varbuf, unsigned int len)
{
char *dp;
bool findNewline;
int column;
unsigned int buf_len, n;
unsigned int pad = 0;
dp = varbuf;
findNewline = FALSE;
column = 0;
for (n = 0; n < len; n++) {
if (varbuf[n] == '\r')
continue;
if (findNewline && varbuf[n] != '\n')
continue;
findNewline = FALSE;
if (varbuf[n] == '#') {
findNewline = TRUE;
continue;
}
if (varbuf[n] == '\n') {
if (column == 0)
continue;
*dp++ = 0;
column = 0;
continue;
}
*dp++ = varbuf[n];
column++;
}
buf_len = (unsigned int)(dp - varbuf);
if (buf_len % 4) {
pad = 4 - buf_len % 4;
if (pad && (buf_len + pad <= len)) {
buf_len += pad;
}
}
while (dp < varbuf + n)
*dp++ = 0;
return buf_len;
}
/* calculate a * b + c */
void
bcm_uint64_multiple_add(uint32* r_high, uint32* r_low, uint32 a, uint32 b, uint32 c)
{
#define FORMALIZE(var) {cc += (var & 0x80000000) ? 1 : 0; var &= 0x7fffffff;}
uint32 r1, r0;
uint32 a1, a0, b1, b0, t, cc = 0;
a1 = a >> 16;
a0 = a & 0xffff;
b1 = b >> 16;
b0 = b & 0xffff;
r0 = a0 * b0;
FORMALIZE(r0);
t = (a1 * b0) << 16;
FORMALIZE(t);
r0 += t;
FORMALIZE(r0);
t = (a0 * b1) << 16;
FORMALIZE(t);
r0 += t;
FORMALIZE(r0);
FORMALIZE(c);
r0 += c;
FORMALIZE(r0);
r0 |= (cc % 2) ? 0x80000000 : 0;
r1 = a1 * b1 + ((a1 * b0) >> 16) + ((b1 * a0) >> 16) + (cc / 2);
*r_high = r1;
*r_low = r0;
}
/* calculate a / b */
void
bcm_uint64_divide(uint32* r, uint32 a_high, uint32 a_low, uint32 b)
{
uint32 a1 = a_high, a0 = a_low, r0 = 0;
if (b < 2)
return;
while (a1 != 0) {
r0 += (0xffffffff / b) * a1;
bcm_uint64_multiple_add(&a1, &a0, ((0xffffffff % b) + 1) % b, a1, a0);
}
r0 += a0 / b;
*r = r0;
}
#ifndef setbit /* As in the header file */
#ifdef BCMUTILS_BIT_MACROS_USE_FUNCS
/* Set bit in byte array. */
void
setbit(void *array, uint bit)
{
((uint8 *)array)[bit / NBBY] |= 1 << (bit % NBBY);
}
/* Clear bit in byte array. */
void
clrbit(void *array, uint bit)
{
((uint8 *)array)[bit / NBBY] &= ~(1 << (bit % NBBY));
}
/* Test if bit is set in byte array. */
bool
isset(const void *array, uint bit)
{
return (((const uint8 *)array)[bit / NBBY] & (1 << (bit % NBBY)));
}
/* Test if bit is clear in byte array. */
bool
isclr(const void *array, uint bit)
{
return ((((const uint8 *)array)[bit / NBBY] & (1 << (bit % NBBY))) == 0);
}
#endif /* BCMUTILS_BIT_MACROS_USE_FUNCS */
#endif /* setbit */
void
set_bitrange(void *array, uint start, uint end, uint maxbit)
{
uint startbyte = start/NBBY;
uint endbyte = end/NBBY;
uint i, startbytelastbit, endbytestartbit;
if (end >= start) {
if (endbyte - startbyte > 1)
{
startbytelastbit = (startbyte+1)*NBBY - 1;
endbytestartbit = endbyte*NBBY;
for (i = startbyte+1; i < endbyte; i++)
((uint8 *)array)[i] = 0xFF;
for (i = start; i <= startbytelastbit; i++)
setbit(array, i);
for (i = endbytestartbit; i <= end; i++)
setbit(array, i);
} else {
for (i = start; i <= end; i++)
setbit(array, i);
}
}
else {
set_bitrange(array, start, maxbit, maxbit);
set_bitrange(array, 0, end, maxbit);
}
}
void
bcm_bitprint32(const uint32 u32)
{
int i;
for (i = NBITS(uint32) - 1; i >= 0; i--) {
isbitset(u32, i) ? printf("1") : printf("0");
if ((i % NBBY) == 0) printf(" ");
}
printf("\n");
}
/* calculate checksum for ip header, tcp / udp header / data */
uint16
bcm_ip_cksum(uint8 *buf, uint32 len, uint32 sum)
{
while (len > 1) {
sum += (buf[0] << 8) | buf[1];
buf += 2;
len -= 2;
}
if (len > 0) {
sum += (*buf) << 8;
}
while (sum >> 16) {
sum = (sum & 0xffff) + (sum >> 16);
}
return ((uint16)~sum);
}
#ifdef BCMDRIVER
/*
* Hierarchical Multiword bitmap based small id allocator.
*
* Multilevel hierarchy bitmap. (maximum 2 levels)
* First hierarchy uses a multiword bitmap to identify 32bit words in the
* second hierarchy that have at least a single bit set. Each bit in a word of
* the second hierarchy represents a unique ID that may be allocated.
*
* BCM_MWBMAP_ITEMS_MAX: Maximum number of IDs managed.
* BCM_MWBMAP_BITS_WORD: Number of bits in a bitmap word word
* BCM_MWBMAP_WORDS_MAX: Maximum number of bitmap words needed for free IDs.
* BCM_MWBMAP_WDMAP_MAX: Maximum number of bitmap wordss identifying first non
* non-zero bitmap word carrying at least one free ID.
* BCM_MWBMAP_SHIFT_OP: Used in MOD, DIV and MUL operations.
* BCM_MWBMAP_INVALID_IDX: Value ~0U is treated as an invalid ID
*
* Design Notes:
* BCM_MWBMAP_USE_CNTSETBITS trades CPU for memory. A runtime count of how many
* bits are computed each time on allocation and deallocation, requiring 4
* array indexed access and 3 arithmetic operations. When not defined, a runtime
* count of set bits state is maintained. Upto 32 Bytes per 1024 IDs is needed.
* In a 4K max ID allocator, up to 128Bytes are hence used per instantiation.
* In a memory limited system e.g. dongle builds, a CPU for memory tradeoff may
* be used by defining BCM_MWBMAP_USE_CNTSETBITS.
*
* Note: wd_bitmap[] is statically declared and is not ROM friendly ... array
* size is fixed. No intention to support larger than 4K indice allocation. ID
* allocators for ranges smaller than 4K will have a wastage of only 12Bytes
* with savings in not having to use an indirect access, had it been dynamically
* allocated.
*/
#define BCM_MWBMAP_ITEMS_MAX (4 * 1024) /* May increase to 16K */
#define BCM_MWBMAP_BITS_WORD (NBITS(uint32))
#define BCM_MWBMAP_WORDS_MAX (BCM_MWBMAP_ITEMS_MAX / BCM_MWBMAP_BITS_WORD)
#define BCM_MWBMAP_WDMAP_MAX (BCM_MWBMAP_WORDS_MAX / BCM_MWBMAP_BITS_WORD)
#define BCM_MWBMAP_SHIFT_OP (5)
#define BCM_MWBMAP_MODOP(ix) ((ix) & (BCM_MWBMAP_BITS_WORD - 1))
#define BCM_MWBMAP_DIVOP(ix) ((ix) >> BCM_MWBMAP_SHIFT_OP)
#define BCM_MWBMAP_MULOP(ix) ((ix) << BCM_MWBMAP_SHIFT_OP)
/* Redefine PTR() and/or HDL() conversion to invoke audit for debugging */
#define BCM_MWBMAP_PTR(hdl) ((struct bcm_mwbmap *)(hdl))
#define BCM_MWBMAP_HDL(ptr) ((void *)(ptr))
#if defined(BCM_MWBMAP_DEBUG)
#define BCM_MWBMAP_AUDIT(mwb) \
do { \
ASSERT((mwb != NULL) && \
(((struct bcm_mwbmap *)(mwb))->magic == (void *)(mwb))); \
bcm_mwbmap_audit(mwb); \
} while (0)
#define MWBMAP_ASSERT(exp) ASSERT(exp)
#define MWBMAP_DBG(x) printf x
#else /* !BCM_MWBMAP_DEBUG */
#define BCM_MWBMAP_AUDIT(mwb) do {} while (0)
#define MWBMAP_ASSERT(exp) do {} while (0)
#define MWBMAP_DBG(x)
#endif /* !BCM_MWBMAP_DEBUG */
typedef struct bcm_mwbmap { /* Hierarchical multiword bitmap allocator */
uint16 wmaps; /* Total number of words in free wd bitmap */
uint16 imaps; /* Total number of words in free id bitmap */
int16 ifree; /* Count of free indices. Used only in audits */
uint16 total; /* Total indices managed by multiword bitmap */
void * magic; /* Audit handle parameter from user */
uint32 wd_bitmap[BCM_MWBMAP_WDMAP_MAX]; /* 1st level bitmap of */
#if !defined(BCM_MWBMAP_USE_CNTSETBITS)
int8 wd_count[BCM_MWBMAP_WORDS_MAX]; /* free id running count, 1st lvl */
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
uint32 id_bitmap[0]; /* Second level bitmap */
} bcm_mwbmap_t;
/* Incarnate a hierarchical multiword bitmap based small index allocator. */
struct bcm_mwbmap *
bcm_mwbmap_init(osl_t *osh, uint32 items_max)
{
struct bcm_mwbmap * mwbmap_p;
uint32 wordix, size, words, extra;
/* Implementation Constraint: Uses 32bit word bitmap */
MWBMAP_ASSERT(BCM_MWBMAP_BITS_WORD == 32U);
MWBMAP_ASSERT(BCM_MWBMAP_SHIFT_OP == 5U);
MWBMAP_ASSERT(ISPOWEROF2(BCM_MWBMAP_ITEMS_MAX));
MWBMAP_ASSERT((BCM_MWBMAP_ITEMS_MAX % BCM_MWBMAP_BITS_WORD) == 0U);
ASSERT(items_max <= BCM_MWBMAP_ITEMS_MAX);
/* Determine the number of words needed in the multiword bitmap */
extra = BCM_MWBMAP_MODOP(items_max);
words = BCM_MWBMAP_DIVOP(items_max) + ((extra != 0U) ? 1U : 0U);
/* Allocate runtime state of multiword bitmap */
/* Note: wd_count[] or wd_bitmap[] are not dynamically allocated */
size = sizeof(bcm_mwbmap_t) + (sizeof(uint32) * words);
mwbmap_p = (bcm_mwbmap_t *)MALLOC(osh, size);
if (mwbmap_p == (bcm_mwbmap_t *)NULL) {
ASSERT(0);
goto error1;
}
memset(mwbmap_p, 0, size);
/* Initialize runtime multiword bitmap state */
mwbmap_p->imaps = (uint16)words;
mwbmap_p->ifree = (int16)items_max;
mwbmap_p->total = (uint16)items_max;
/* Setup magic, for use in audit of handle */
mwbmap_p->magic = BCM_MWBMAP_HDL(mwbmap_p);
/* Setup the second level bitmap of free indices */
/* Mark all indices as available */
for (wordix = 0U; wordix < mwbmap_p->imaps; wordix++) {
mwbmap_p->id_bitmap[wordix] = (uint32)(~0U);
#if !defined(BCM_MWBMAP_USE_CNTSETBITS)
mwbmap_p->wd_count[wordix] = BCM_MWBMAP_BITS_WORD;
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
}
/* Ensure that extra indices are tagged as un-available */
if (extra) { /* fixup the free ids in last bitmap and wd_count */
uint32 * bmap_p = &mwbmap_p->id_bitmap[mwbmap_p->imaps - 1];
*bmap_p ^= (uint32)(~0U << extra); /* fixup bitmap */
#if !defined(BCM_MWBMAP_USE_CNTSETBITS)
mwbmap_p->wd_count[mwbmap_p->imaps - 1] = (int8)extra; /* fixup count */
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
}
/* Setup the first level bitmap hierarchy */
extra = BCM_MWBMAP_MODOP(mwbmap_p->imaps);
words = BCM_MWBMAP_DIVOP(mwbmap_p->imaps) + ((extra != 0U) ? 1U : 0U);
mwbmap_p->wmaps = (uint16)words;
for (wordix = 0U; wordix < mwbmap_p->wmaps; wordix++)
mwbmap_p->wd_bitmap[wordix] = (uint32)(~0U);
if (extra) {
uint32 * bmap_p = &mwbmap_p->wd_bitmap[mwbmap_p->wmaps - 1];
*bmap_p ^= (uint32)(~0U << extra); /* fixup bitmap */
}
return mwbmap_p;
error1:
return BCM_MWBMAP_INVALID_HDL;
}
/* Release resources used by multiword bitmap based small index allocator. */
void
bcm_mwbmap_fini(osl_t * osh, struct bcm_mwbmap * mwbmap_hdl)
{
bcm_mwbmap_t * mwbmap_p;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
MFREE(osh, mwbmap_p, sizeof(struct bcm_mwbmap)
+ (sizeof(uint32) * mwbmap_p->imaps));
return;
}
/* Allocate a unique small index using a multiword bitmap index allocator. */
uint32 BCMFASTPATH
bcm_mwbmap_alloc(struct bcm_mwbmap * mwbmap_hdl)
{
bcm_mwbmap_t * mwbmap_p;
uint32 wordix, bitmap;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
/* Start with the first hierarchy */
for (wordix = 0; wordix < mwbmap_p->wmaps; ++wordix) {
bitmap = mwbmap_p->wd_bitmap[wordix]; /* get the word bitmap */
if (bitmap != 0U) {
uint32 count, bitix, *bitmap_p;
bitmap_p = &mwbmap_p->wd_bitmap[wordix];
/* clear all except trailing 1 */
bitmap = (uint32)(((int)(bitmap)) & (-((int)(bitmap))));
MWBMAP_ASSERT(C_bcm_count_leading_zeros(bitmap) ==
bcm_count_leading_zeros(bitmap));
bitix = (BCM_MWBMAP_BITS_WORD - 1)
- bcm_count_leading_zeros(bitmap); /* use asm clz */
wordix = BCM_MWBMAP_MULOP(wordix) + bitix;
/* Clear bit if wd count is 0, without conditional branch */
#if defined(BCM_MWBMAP_USE_CNTSETBITS)
count = bcm_cntsetbits(mwbmap_p->id_bitmap[wordix]) - 1;
#else /* ! BCM_MWBMAP_USE_CNTSETBITS */
mwbmap_p->wd_count[wordix]--;
count = mwbmap_p->wd_count[wordix];
MWBMAP_ASSERT(count ==
(bcm_cntsetbits(mwbmap_p->id_bitmap[wordix]) - 1));
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
MWBMAP_ASSERT(count >= 0);
/* clear wd_bitmap bit if id_map count is 0 */
bitmap = (count == 0) << bitix;
MWBMAP_DBG((
"Lvl1: bitix<%02u> wordix<%02u>: %08x ^ %08x = %08x wfree %d",
bitix, wordix, *bitmap_p, bitmap, (*bitmap_p) ^ bitmap, count));
*bitmap_p ^= bitmap;
/* Use bitix in the second hierarchy */
bitmap_p = &mwbmap_p->id_bitmap[wordix];
bitmap = mwbmap_p->id_bitmap[wordix]; /* get the id bitmap */
MWBMAP_ASSERT(bitmap != 0U);
/* clear all except trailing 1 */
bitmap = (uint32)(((int)(bitmap)) & (-((int)(bitmap))));
MWBMAP_ASSERT(C_bcm_count_leading_zeros(bitmap) ==
bcm_count_leading_zeros(bitmap));
bitix = BCM_MWBMAP_MULOP(wordix)
+ (BCM_MWBMAP_BITS_WORD - 1)
- bcm_count_leading_zeros(bitmap); /* use asm clz */
mwbmap_p->ifree--; /* decrement system wide free count */
MWBMAP_ASSERT(mwbmap_p->ifree >= 0);
MWBMAP_DBG((
"Lvl2: bitix<%02u> wordix<%02u>: %08x ^ %08x = %08x ifree %d",
bitix, wordix, *bitmap_p, bitmap, (*bitmap_p) ^ bitmap,
mwbmap_p->ifree));
*bitmap_p ^= bitmap; /* mark as allocated = 1b0 */
return bitix;
}
}
ASSERT(mwbmap_p->ifree == 0);
return BCM_MWBMAP_INVALID_IDX;
}
/* Force an index at a specified position to be in use */
void
bcm_mwbmap_force(struct bcm_mwbmap * mwbmap_hdl, uint32 bitix)
{
bcm_mwbmap_t * mwbmap_p;
uint32 count, wordix, bitmap, *bitmap_p;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
ASSERT(bitix < mwbmap_p->total);
/* Start with second hierarchy */
wordix = BCM_MWBMAP_DIVOP(bitix);
bitmap = (uint32)(1U << BCM_MWBMAP_MODOP(bitix));
bitmap_p = &mwbmap_p->id_bitmap[wordix];
ASSERT((*bitmap_p & bitmap) == bitmap);
mwbmap_p->ifree--; /* update free count */
ASSERT(mwbmap_p->ifree >= 0);
MWBMAP_DBG(("Lvl2: bitix<%u> wordix<%u>: %08x ^ %08x = %08x ifree %d",
bitix, wordix, *bitmap_p, bitmap, (*bitmap_p) ^ bitmap,
mwbmap_p->ifree));
*bitmap_p ^= bitmap; /* mark as in use */
/* Update first hierarchy */
bitix = wordix;
wordix = BCM_MWBMAP_DIVOP(bitix);
bitmap_p = &mwbmap_p->wd_bitmap[wordix];
#if defined(BCM_MWBMAP_USE_CNTSETBITS)
count = bcm_cntsetbits(mwbmap_p->id_bitmap[bitix]);
#else /* ! BCM_MWBMAP_USE_CNTSETBITS */
mwbmap_p->wd_count[bitix]--;
count = mwbmap_p->wd_count[bitix];
MWBMAP_ASSERT(count == bcm_cntsetbits(mwbmap_p->id_bitmap[bitix]));
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
MWBMAP_ASSERT(count >= 0);
bitmap = (count == 0) << BCM_MWBMAP_MODOP(bitix);
MWBMAP_DBG(("Lvl1: bitix<%02lu> wordix<%02u>: %08x ^ %08x = %08x wfree %d",
BCM_MWBMAP_MODOP(bitix), wordix, *bitmap_p, bitmap,
(*bitmap_p) ^ bitmap, count));
*bitmap_p ^= bitmap; /* mark as in use */
return;
}
/* Free a previously allocated index back into the multiword bitmap allocator */
void BCMFASTPATH
bcm_mwbmap_free(struct bcm_mwbmap * mwbmap_hdl, uint32 bitix)
{
bcm_mwbmap_t * mwbmap_p;
uint32 wordix, bitmap, *bitmap_p;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
ASSERT(bitix < mwbmap_p->total);
/* Start with second level hierarchy */
wordix = BCM_MWBMAP_DIVOP(bitix);
bitmap = (1U << BCM_MWBMAP_MODOP(bitix));
bitmap_p = &mwbmap_p->id_bitmap[wordix];
ASSERT((*bitmap_p & bitmap) == 0U); /* ASSERT not a double free */
mwbmap_p->ifree++; /* update free count */
ASSERT(mwbmap_p->ifree <= mwbmap_p->total);
MWBMAP_DBG(("Lvl2: bitix<%02u> wordix<%02u>: %08x | %08x = %08x ifree %d",
bitix, wordix, *bitmap_p, bitmap, (*bitmap_p) | bitmap,
mwbmap_p->ifree));
*bitmap_p |= bitmap; /* mark as available */
/* Now update first level hierarchy */
bitix = wordix;
wordix = BCM_MWBMAP_DIVOP(bitix); /* first level's word index */
bitmap = (1U << BCM_MWBMAP_MODOP(bitix));
bitmap_p = &mwbmap_p->wd_bitmap[wordix];
#if !defined(BCM_MWBMAP_USE_CNTSETBITS)
mwbmap_p->wd_count[bitix]++;
#endif
#if defined(BCM_MWBMAP_DEBUG)
{
uint32 count;
#if defined(BCM_MWBMAP_USE_CNTSETBITS)
count = bcm_cntsetbits(mwbmap_p->id_bitmap[bitix]);
#else /* ! BCM_MWBMAP_USE_CNTSETBITS */
count = mwbmap_p->wd_count[bitix];
MWBMAP_ASSERT(count == bcm_cntsetbits(mwbmap_p->id_bitmap[bitix]));
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
MWBMAP_ASSERT(count <= BCM_MWBMAP_BITS_WORD);
MWBMAP_DBG(("Lvl1: bitix<%02u> wordix<%02u>: %08x | %08x = %08x wfree %d",
bitix, wordix, *bitmap_p, bitmap, (*bitmap_p) | bitmap, count));
}
#endif /* BCM_MWBMAP_DEBUG */
*bitmap_p |= bitmap;
return;
}
/* Fetch the toal number of free indices in the multiword bitmap allocator */
uint32
bcm_mwbmap_free_cnt(struct bcm_mwbmap * mwbmap_hdl)
{
bcm_mwbmap_t * mwbmap_p;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
ASSERT(mwbmap_p->ifree >= 0);
return mwbmap_p->ifree;
}
/* Determine whether an index is inuse or free */
bool
bcm_mwbmap_isfree(struct bcm_mwbmap * mwbmap_hdl, uint32 bitix)
{
bcm_mwbmap_t * mwbmap_p;
uint32 wordix, bitmap;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
ASSERT(bitix < mwbmap_p->total);
wordix = BCM_MWBMAP_DIVOP(bitix);
bitmap = (1U << BCM_MWBMAP_MODOP(bitix));
return ((mwbmap_p->id_bitmap[wordix] & bitmap) != 0U);
}
/* Debug dump a multiword bitmap allocator */
void
bcm_mwbmap_show(struct bcm_mwbmap * mwbmap_hdl)
{
uint32 ix, count;
bcm_mwbmap_t * mwbmap_p;
BCM_MWBMAP_AUDIT(mwbmap_hdl);
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
printf("mwbmap_p %p wmaps %u imaps %u ifree %d total %u\n", mwbmap_p,
mwbmap_p->wmaps, mwbmap_p->imaps, mwbmap_p->ifree, mwbmap_p->total);
for (ix = 0U; ix < mwbmap_p->wmaps; ix++) {
printf("\tWDMAP:%2u. 0x%08x\t", ix, mwbmap_p->wd_bitmap[ix]);
bcm_bitprint32(mwbmap_p->wd_bitmap[ix]);
printf("\n");
}
for (ix = 0U; ix < mwbmap_p->imaps; ix++) {
#if defined(BCM_MWBMAP_USE_CNTSETBITS)
count = bcm_cntsetbits(mwbmap_p->id_bitmap[ix]);
#else /* ! BCM_MWBMAP_USE_CNTSETBITS */
count = mwbmap_p->wd_count[ix];
MWBMAP_ASSERT(count == bcm_cntsetbits(mwbmap_p->id_bitmap[ix]));
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
printf("\tIDMAP:%2u. 0x%08x %02u\t", ix, mwbmap_p->id_bitmap[ix], count);
bcm_bitprint32(mwbmap_p->id_bitmap[ix]);
printf("\n");
}
return;
}
/* Audit a hierarchical multiword bitmap */
void
bcm_mwbmap_audit(struct bcm_mwbmap * mwbmap_hdl)
{
bcm_mwbmap_t * mwbmap_p;
uint32 count, free_cnt = 0U, wordix, idmap_ix, bitix, *bitmap_p;
mwbmap_p = BCM_MWBMAP_PTR(mwbmap_hdl);
for (wordix = 0U; wordix < mwbmap_p->wmaps; ++wordix) {
bitmap_p = &mwbmap_p->wd_bitmap[wordix];
for (bitix = 0U; bitix < BCM_MWBMAP_BITS_WORD; bitix++) {
if ((*bitmap_p) & (1 << bitix)) {
idmap_ix = BCM_MWBMAP_MULOP(wordix) + bitix;
#if defined(BCM_MWBMAP_USE_CNTSETBITS)
count = bcm_cntsetbits(mwbmap_p->id_bitmap[idmap_ix]);
#else /* ! BCM_MWBMAP_USE_CNTSETBITS */
count = mwbmap_p->wd_count[idmap_ix];
ASSERT(count == bcm_cntsetbits(mwbmap_p->id_bitmap[idmap_ix]));
#endif /* ! BCM_MWBMAP_USE_CNTSETBITS */
ASSERT(count != 0U);
free_cnt += count;
}
}
}
ASSERT((int)free_cnt == mwbmap_p->ifree);
}
/* END : Multiword bitmap based 64bit to Unique 32bit Id allocator. */
/* Simple 16bit Id allocator using a stack implementation. */
typedef struct id16_map {
uint16 total; /* total number of ids managed by allocator */
uint16 start; /* start value of 16bit ids to be managed */
uint32 failures; /* count of failures */
void *dbg; /* debug placeholder */
int stack_idx; /* index into stack of available ids */
uint16 stack[0]; /* stack of 16 bit ids */
} id16_map_t;
#define ID16_MAP_SZ(items) (sizeof(id16_map_t) + \
(sizeof(uint16) * (items)))
#if defined(BCM_DBG)
/* Uncomment BCM_DBG_ID16 to debug double free */
/* #define BCM_DBG_ID16 */
typedef struct id16_map_dbg {
uint16 total;
bool avail[0];
} id16_map_dbg_t;
#define ID16_MAP_DBG_SZ(items) (sizeof(id16_map_dbg_t) + \
(sizeof(bool) * (items)))
#define ID16_MAP_MSG(x) print x
#else
#define ID16_MAP_MSG(x)
#endif /* BCM_DBG */
void * /* Construct an id16 allocator: [start_val16 .. start_val16+total_ids) */
id16_map_init(osl_t *osh, uint16 total_ids, uint16 start_val16)
{
uint16 idx, val16;
id16_map_t * id16_map;
ASSERT(total_ids > 0);
ASSERT((start_val16 + total_ids) < ID16_INVALID);
id16_map = (id16_map_t *) MALLOC(osh, ID16_MAP_SZ(total_ids));
if (id16_map == NULL) {
return NULL;
}
id16_map->total = total_ids;
id16_map->start = start_val16;
id16_map->failures = 0;
id16_map->dbg = NULL;
/* Populate stack with 16bit id values, commencing with start_val16 */
id16_map->stack_idx = 0;
val16 = start_val16;
for (idx = 0; idx < total_ids; idx++, val16++) {
id16_map->stack_idx = idx;
id16_map->stack[id16_map->stack_idx] = val16;
}
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
id16_map->dbg = MALLOC(osh, ID16_MAP_DBG_SZ(total_ids));
if (id16_map->dbg) {
id16_map_dbg_t *id16_map_dbg = (id16_map_dbg_t *)id16_map->dbg;
id16_map_dbg->total = total_ids;
for (idx = 0; idx < total_ids; idx++) {
id16_map_dbg->avail[idx] = TRUE;
}
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
return (void *)id16_map;
}
void * /* Destruct an id16 allocator instance */
id16_map_fini(osl_t *osh, void * id16_map_hndl)
{
uint16 total_ids;
id16_map_t * id16_map;
if (id16_map_hndl == NULL)
return NULL;
id16_map = (id16_map_t *)id16_map_hndl;
total_ids = id16_map->total;
ASSERT(total_ids > 0);
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
if (id16_map->dbg) {
MFREE(osh, id16_map->dbg, ID16_MAP_DBG_SZ(total_ids));
id16_map->dbg = NULL;
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
id16_map->total = 0;
MFREE(osh, id16_map, ID16_MAP_SZ(total_ids));
return NULL;
}
void
id16_map_clear(void * id16_map_hndl, uint16 total_ids, uint16 start_val16)
{
uint16 idx, val16;
id16_map_t * id16_map;
ASSERT(total_ids > 0);
ASSERT((start_val16 + total_ids) < ID16_INVALID);
id16_map = (id16_map_t *)id16_map_hndl;
if (id16_map == NULL) {
return;
}
id16_map->total = total_ids;
id16_map->start = start_val16;
id16_map->failures = 0;
/* Populate stack with 16bit id values, commencing with start_val16 */
id16_map->stack_idx = 0;
val16 = start_val16;
for (idx = 0; idx < total_ids; idx++, val16++) {
id16_map->stack_idx = idx;
id16_map->stack[id16_map->stack_idx] = val16;
}
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
if (id16_map->dbg) {
id16_map_dbg_t *id16_map_dbg = (id16_map_dbg_t *)id16_map->dbg;
id16_map_dbg->total = total_ids;
for (idx = 0; idx < total_ids; idx++) {
id16_map_dbg->avail[idx] = TRUE;
}
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
}
uint16 BCMFASTPATH /* Allocate a unique 16bit id */
id16_map_alloc(void * id16_map_hndl)
{
uint16 val16;
id16_map_t * id16_map;
ASSERT(id16_map_hndl != NULL);
id16_map = (id16_map_t *)id16_map_hndl;
ASSERT(id16_map->total > 0);
if (id16_map->stack_idx < 0) {
id16_map->failures++;
return ID16_INVALID;
}
val16 = id16_map->stack[id16_map->stack_idx];
id16_map->stack_idx--;
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
ASSERT(val16 < (id16_map->start + id16_map->total));
if (id16_map->dbg) { /* Validate val16 */
id16_map_dbg_t *id16_map_dbg = (id16_map_dbg_t *)id16_map->dbg;
ASSERT(id16_map_dbg->avail[val16 - id16_map->start] == TRUE);
id16_map_dbg->avail[val16 - id16_map->start] = FALSE;
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
return val16;
}
void BCMFASTPATH /* Free a 16bit id value into the id16 allocator */
id16_map_free(void * id16_map_hndl, uint16 val16)
{
id16_map_t * id16_map;
ASSERT(id16_map_hndl != NULL);
id16_map = (id16_map_t *)id16_map_hndl;
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
ASSERT(val16 < (id16_map->start + id16_map->total));
if (id16_map->dbg) { /* Validate val16 */
id16_map_dbg_t *id16_map_dbg = (id16_map_dbg_t *)id16_map->dbg;
ASSERT(id16_map_dbg->avail[val16 - id16_map->start] == FALSE);
id16_map_dbg->avail[val16 - id16_map->start] = TRUE;
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
id16_map->stack_idx++;
id16_map->stack[id16_map->stack_idx] = val16;
}
uint32 /* Returns number of failures to allocate an unique id16 */
id16_map_failures(void * id16_map_hndl)
{
ASSERT(id16_map_hndl != NULL);
return ((id16_map_t *)id16_map_hndl)->failures;
}
bool
id16_map_audit(void * id16_map_hndl)
{
int idx;
int insane = 0;
id16_map_t * id16_map;
ASSERT(id16_map_hndl != NULL);
id16_map = (id16_map_t *)id16_map_hndl;
ASSERT((id16_map->stack_idx > 0) && (id16_map->stack_idx < id16_map->total));
for (idx = 0; idx <= id16_map->stack_idx; idx++) {
ASSERT(id16_map->stack[idx] >= id16_map->start);
ASSERT(id16_map->stack[idx] < (id16_map->start + id16_map->total));
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
if (id16_map->dbg) {
uint16 val16 = id16_map->stack[idx];
if (((id16_map_dbg_t *)(id16_map->dbg))->avail[val16] != TRUE) {
insane |= 1;
ID16_MAP_MSG(("id16_map<%p>: stack_idx %u invalid val16 %u\n",
id16_map_hndl, idx, val16));
}
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
}
#if defined(BCM_DBG) && defined(BCM_DBG_ID16)
if (id16_map->dbg) {
uint16 avail = 0; /* Audit available ids counts */
for (idx = 0; idx < id16_map_dbg->total; idx++) {
if (((id16_map_dbg_t *)(id16_map->dbg))->avail[idx16] == TRUE)
avail++;
}
if (avail && (avail != (id16_map->stack_idx + 1))) {
insane |= 1;
ID16_MAP_MSG(("id16_map<%p>: avail %u stack_idx %u\n",
id16_map_hndl, avail, id16_map->stack_idx));
}
}
#endif /* BCM_DBG && BCM_DBG_ID16 */
return (!!insane);
}
/* END: Simple id16 allocator */
#endif /* BCMDRIVER */
/* calculate a >> b; and returns only lower 32 bits */
void
bcm_uint64_right_shift(uint32* r, uint32 a_high, uint32 a_low, uint32 b)
{
uint32 a1 = a_high, a0 = a_low, r0 = 0;
if (b == 0) {
r0 = a_low;
*r = r0;
return;
}
if (b < 32) {
a0 = a0 >> b;
a1 = a1 & ((1 << b) - 1);
a1 = a1 << (32 - b);
r0 = a0 | a1;
*r = r0;
return;
} else {
r0 = a1 >> (b - 32);
*r = r0;
return;
}
}
/* calculate a + b where a is a 64 bit number and b is a 32 bit number */
void
bcm_add_64(uint32* r_hi, uint32* r_lo, uint32 offset)
{
uint32 r1_lo = *r_lo;
(*r_lo) += offset;
if (*r_lo < r1_lo)
(*r_hi) ++;
}
/* calculate a - b where a is a 64 bit number and b is a 32 bit number */
void
bcm_sub_64(uint32* r_hi, uint32* r_lo, uint32 offset)
{
uint32 r1_lo = *r_lo;
(*r_lo) -= offset;
if (*r_lo > r1_lo)
(*r_hi) --;
}
#ifdef DEBUG_COUNTER
#if (OSL_SYSUPTIME_SUPPORT == TRUE)
void counter_printlog(counter_tbl_t *ctr_tbl)
{
uint32 now;
if (!ctr_tbl->enabled)
return;
now = OSL_SYSUPTIME();
if (now - ctr_tbl->prev_log_print > ctr_tbl->log_print_interval) {
uint8 i = 0;
printf("counter_print(%s %d):", ctr_tbl->name, now - ctr_tbl->prev_log_print);
for (i = 0; i < ctr_tbl->needed_cnt; i++) {
printf(" %u", ctr_tbl->cnt[i]);
}
printf("\n");
ctr_tbl->prev_log_print = now;
bzero(ctr_tbl->cnt, CNTR_TBL_MAX * sizeof(uint));
}
}
#else
/* OSL_SYSUPTIME is not supported so no way to get time */
#define counter_printlog(a) do {} while (0)
#endif /* OSL_SYSUPTIME_SUPPORT == TRUE */
#endif /* DEBUG_COUNTER */
#ifdef BCMDRIVER
void
dll_pool_detach(void * osh, dll_pool_t * pool, uint16 elems_max, uint16 elem_size)
{
uint32 mem_size;
mem_size = sizeof(dll_pool_t) + (elems_max * elem_size);
if (pool)
MFREE(osh, pool, mem_size);
}
dll_pool_t *
dll_pool_init(void * osh, uint16 elems_max, uint16 elem_size)
{
uint32 mem_size, i;
dll_pool_t * dll_pool_p;
dll_t * elem_p;
ASSERT(elem_size > sizeof(dll_t));
mem_size = sizeof(dll_pool_t) + (elems_max * elem_size);
if ((dll_pool_p = (dll_pool_t *)MALLOC(osh, mem_size)) == NULL) {
printf("dll_pool_init: elems_max<%u> elem_size<%u> malloc failure\n",
elems_max, elem_size);
ASSERT(0);
return dll_pool_p;
}
bzero(dll_pool_p, mem_size);
dll_init(&dll_pool_p->free_list);
dll_pool_p->elems_max = elems_max;
dll_pool_p->elem_size = elem_size;
elem_p = dll_pool_p->elements;
for (i = 0; i < elems_max; i++) {
dll_append(&dll_pool_p->free_list, elem_p);
elem_p = (dll_t *)((uintptr)elem_p + elem_size);
}
dll_pool_p->free_count = elems_max;
return dll_pool_p;
}
void *
dll_pool_alloc(dll_pool_t * dll_pool_p)
{
dll_t * elem_p;
if (dll_pool_p->free_count == 0) {
ASSERT(dll_empty(&dll_pool_p->free_list));
return NULL;
}
elem_p = dll_head_p(&dll_pool_p->free_list);
dll_delete(elem_p);
dll_pool_p->free_count -= 1;
return (void *)elem_p;
}
void
dll_pool_free(dll_pool_t * dll_pool_p, void * elem_p)
{
dll_t * node_p = (dll_t *)elem_p;
dll_prepend(&dll_pool_p->free_list, node_p);
dll_pool_p->free_count += 1;
}
void
dll_pool_free_tail(dll_pool_t * dll_pool_p, void * elem_p)
{
dll_t * node_p = (dll_t *)elem_p;
dll_append(&dll_pool_p->free_list, node_p);
dll_pool_p->free_count += 1;
}
#endif /* BCMDRIVER */