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/*
* CFE OS Independent Layer
*
* Copyright 2007, 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: cfe_osl.c,v 1.1.1.1 2008/07/21 09:20:53 james26_jang Exp $
*/
#include <typedefs.h>
#include <bcmdefs.h>
#include <osl.h>
osl_t *
osl_attach(void *pdev)
{
osl_t *osh;
osh = (osl_t *)KMALLOC(sizeof(osl_t), 0);
ASSERT(osh);
bzero(osh, sizeof(osl_t));
osh->pdev = pdev;
return osh;
}
void
osl_detach(osl_t *osh)
{
if (osh == NULL)
return;
KFREE((void*) KERNADDR(PHYSADDR((ulong)osh)));
}
struct lbuf *
osl_pktget(uint len)
{
uchar *buf;
struct lbuf *lb;
ASSERT(len <= LBDATASZ);
if (!(buf = KMALLOC(LBUFSZ, 0)))
return NULL;
lb = (struct lbuf *) &buf[LBDATASZ];
bzero(lb, sizeof(struct lbuf));
lb->head = lb->data = buf;
lb->end = buf + len;
lb->len = len;
lb->tail = lb->data + len;
return lb;
}
void
osl_pktfree(osl_t *osh, struct lbuf *lb, bool send)
{
struct lbuf *next;
if (send && osh->tx_fn)
osh->tx_fn(osh->tx_ctx, lb, 0);
for (; lb; lb = next) {
ASSERT(!lb->link);
next = lb->next;
KFREE((void *) KERNADDR(PHYSADDR((ulong) lb->head)));
}
}
struct lbuf *
osl_pktdup(struct lbuf *lb)
{
struct lbuf *dup;
if (!(dup = osl_pktget(lb->len)))
return NULL;
bcopy(lb->data, dup->data, lb->len);
ASSERT(!lb->link);
return dup;
}
void
osl_pktsetlen(struct lbuf *lb, uint len)
{
ASSERT((lb->data + len) <= lb->end);
lb->len = len;
lb->tail = lb->data + len;
}
uchar *
osl_pktpush(struct lbuf *lb, uint bytes)
{
ASSERT((lb->data - bytes) >= lb->head);
lb->data -= bytes;
lb->len += bytes;
return lb->data;
}
uchar *
osl_pktpull(struct lbuf *lb, uint bytes)
{
ASSERT((lb->data + bytes) <= lb->end);
ASSERT(lb->len >= bytes);
lb->data += bytes;
lb->len -= bytes;
return lb->data;
}
void *
osl_dma_alloc_consistent(uint size, ulong *pap)
{
void *buf;
if (!(buf = KMALLOC(size, DMA_CONSISTENT_ALIGN)))
return NULL;
*((ulong *) pap) = PHYSADDR((ulong) buf);
cfe_flushcache(CFE_CACHE_FLUSH_D);
return (void *) UNCADDR((ulong) buf);
}
void
osl_dma_free_consistent(void *va)
{
KFREE((void *) KERNADDR(PHYSADDR((ulong) va)));
}
#ifdef BCMDBG_ASSERT
void
osl_assert(char *exp, char *file, int line)
{
printf("assertion \"%s\" failed: file \"%s\", line %d\n", exp, file, line);
*((int *) 0) = 0;
}
#endif /* BCMDBG_ASSERT */
int
osl_busprobe(uint32 *val, uint32 addr)
{
*val = R_REG(NULL, (volatile uint32 *) addr);
return 0;
}
/* translate bcmerros */
int
osl_error(int bcmerror)
{
if (bcmerror)
return -1;
else
return 0;
}
/* Converts a OS packet to driver packet.
* The original packet data is copied to the new driver packet
*/
void
osl_pkt_frmnative(iocb_buffer_t *buffer, struct lbuf *lb)
{
bcopy(buffer->buf_ptr, PKTDATA(NULL, lb), buffer->buf_length);
}
/* Converts a driver packet into OS packet.
* The data is copied to the OS packet
*/
void
osl_pkt_tonative(struct lbuf* lb, iocb_buffer_t *buffer)
{
bcopy(PKTDATA(NULL, lb), buffer->buf_ptr, PKTLEN(NULL, lb));
buffer->buf_retlen = PKTLEN(NULL, lb);
/* RFC894: Minimum length of IP over Ethernet packet is 46 octets */
if (buffer->buf_retlen < 60) {
bzero(buffer->buf_ptr + buffer->buf_retlen, 60 - buffer->buf_retlen);
buffer->buf_retlen = 60;
}
}
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