Openwrt/openwrt/package/linux/kernel-source/drivers/net/hnd/linux_osl.c

466 lines
7.2 KiB
C

/*
* Linux OS Independent Layer
*
* 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.
*
* $Id$
*/
#define LINUX_OSL
#include <typedefs.h>
#include <bcmendian.h>
#include <linuxver.h>
#include <linux_osl.h>
#include <bcmutils.h>
#include <linux/delay.h>
#ifdef mips
#include <asm/paccess.h>
#endif
#include <pcicfg.h>
#define PCI_CFG_RETRY 10
void*
osl_pktget(void *drv, uint len, bool send)
{
struct sk_buff *skb;
if ((skb = dev_alloc_skb(len)) == NULL)
return (NULL);
skb_put(skb, len);
/* ensure the cookie field is cleared */
PKTSETCOOKIE(skb, NULL);
return ((void*) skb);
}
void
osl_pktfree(void *p)
{
struct sk_buff *skb, *nskb;
skb = (struct sk_buff*) p;
/* perversion: we use skb->next to chain multi-skb packets */
while (skb) {
nskb = skb->next;
skb->next = NULL;
if (skb->destructor) {
/* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if destructor exists */
dev_kfree_skb_any(skb);
} else {
/* can free immediately (even in_irq()) if destructor does not exist */
dev_kfree_skb(skb);
}
skb = nskb;
}
}
uint32
osl_pci_read_config(void *loc, uint offset, uint size)
{
struct pci_dev *pdev;
uint val;
uint retry=PCI_CFG_RETRY;
/* only 4byte access supported */
ASSERT(size == 4);
pdev = (struct pci_dev*)loc;
do {
pci_read_config_dword(pdev, offset, &val);
if (val != 0xffffffff)
break;
} while (retry--);
return (val);
}
void
osl_pci_write_config(void *loc, uint offset, uint size, uint val)
{
struct pci_dev *pdev;
uint retry=PCI_CFG_RETRY;
/* only 4byte access supported */
ASSERT(size == 4);
pdev = (struct pci_dev*)loc;
do {
pci_write_config_dword(pdev, offset, val);
if (offset!=PCI_BAR0_WIN)
break;
if (osl_pci_read_config(loc,offset,size) == val)
break;
} while (retry--);
}
static void
osl_pcmcia_attr(void *osh, uint offset, char *buf, int size, bool write)
{
}
void
osl_pcmcia_read_attr(void *osh, uint offset, void *buf, int size)
{
osl_pcmcia_attr(osh, offset, (char *) buf, size, FALSE);
}
void
osl_pcmcia_write_attr(void *osh, uint offset, void *buf, int size)
{
osl_pcmcia_attr(osh, offset, (char *) buf, size, TRUE);
}
#if defined(BINOSL)
void
osl_assert(char *exp, char *file, int line)
{
char tempbuf[255];
sprintf(tempbuf, "assertion \"%s\" failed: file \"%s\", line %d\n", exp, file, line);
panic(tempbuf);
}
void*
osl_malloc(uint size)
{
return (kmalloc(size, GFP_ATOMIC));
}
void
osl_mfree(void *addr, uint size)
{
kfree(addr);
}
uint
osl_malloced(void)
{
#ifdef MODULE
return malloced;
#else
return 0;
#endif
}
#endif /* defined(BCMDBG) || defined(BINOSL) */
/*
* BINOSL selects the slightly slower function-call-based binary compatible osl.
*/
#ifdef BINOSL
int
osl_printf(const char *format, ...)
{
va_list args;
char buf[1024];
int len;
/* sprintf into a local buffer because there *is* no "vprintk()".. */
va_start(args, format);
len = vsprintf(buf, format, args);
va_end(args);
if (len > sizeof (buf)) {
printk("osl_printf: buffer overrun\n");
return (0);
}
return (printk(buf));
}
int
osl_sprintf(char *buf, const char *format, ...)
{
va_list args;
int rc;
va_start(args, format);
rc = vsprintf(buf, format, args);
va_end(args);
return (rc);
}
int
osl_strcmp(const char *s1, const char *s2)
{
return (strcmp(s1, s2));
}
int
osl_strncmp(const char *s1, const char *s2, uint n)
{
return (strncmp(s1, s2, n));
}
int
osl_strlen(char *s)
{
return (strlen(s));
}
char*
osl_strcpy(char *d, const char *s)
{
return (strcpy(d, s));
}
char*
osl_strncpy(char *d, const char *s, uint n)
{
return (strncpy(d, s, n));
}
void
bcopy(const void *src, void *dst, int len)
{
memcpy(dst, src, len);
}
int
bcmp(const void *b1, const void *b2, int len)
{
return (memcmp(b1, b2, len));
}
void
bzero(void *b, int len)
{
memset(b, '\0', len);
}
uint32
osl_readl(volatile uint32 *r)
{
return (readl(r));
}
uint16
osl_readw(volatile uint16 *r)
{
return (readw(r));
}
uint8
osl_readb(volatile uint8 *r)
{
return (readb(r));
}
void
osl_writel(uint32 v, volatile uint32 *r)
{
writel(v, r);
}
void
osl_writew(uint16 v, volatile uint16 *r)
{
writew(v, r);
}
void
osl_writeb(uint8 v, volatile uint8 *r)
{
writeb(v, r);
}
void *
osl_uncached(void *va)
{
#ifdef mips
return ((void*)KSEG1ADDR(va));
#else
return ((void*)va);
#endif
}
uint
osl_getcycles(void)
{
uint cycles;
#if defined(mips)
cycles = read_c0_count() * 2;
#elif defined(__i386__)
rdtscl(cycles);
#else
cycles = 0;
#endif
return cycles;
}
void *
osl_reg_map(uint32 pa, uint size)
{
return (ioremap_nocache((unsigned long)pa, (unsigned long)size));
}
void
osl_reg_unmap(void *va)
{
iounmap(va);
}
int
osl_busprobe(uint32 *val, uint32 addr)
{
#ifdef mips
return get_dbe(*val, (uint32*)addr);
#else
*val = readl(addr);
return 0;
#endif
}
void*
osl_dma_alloc_consistent(void *dev, uint size, ulong *pap)
{
return (pci_alloc_consistent((struct pci_dev*)dev, size, (dma_addr_t*)pap));
}
void
osl_dma_free_consistent(void *dev, void *va, uint size, ulong pa)
{
pci_free_consistent((struct pci_dev*)dev, size, va, (dma_addr_t)pa);
}
uint
osl_dma_map(void *dev, void *va, uint size, int direction)
{
int dir;
dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
return (pci_map_single(dev, va, size, dir));
}
void
osl_dma_unmap(void *dev, uint pa, uint size, int direction)
{
int dir;
dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
pci_unmap_single(dev, (uint32)pa, size, dir);
}
void
osl_delay(uint usec)
{
udelay(usec);
}
uchar*
osl_pktdata(void *drv, void *skb)
{
return (((struct sk_buff*)skb)->data);
}
uint
osl_pktlen(void *drv, void *skb)
{
return (((struct sk_buff*)skb)->len);
}
uint
osl_pktheadroom(void *drv, void *skb)
{
return (uint) skb_headroom((struct sk_buff *) skb);
}
uint
osl_pkttailroom(void *drv, void *skb)
{
return (uint) skb_tailroom((struct sk_buff *) skb);
}
void*
osl_pktnext(void *drv, void *skb)
{
return (((struct sk_buff*)skb)->next);
}
void
osl_pktsetnext(void *skb, void *x)
{
((struct sk_buff*)skb)->next = (struct sk_buff*)x;
}
void
osl_pktsetlen(void *drv, void *skb, uint len)
{
__skb_trim((struct sk_buff*)skb, len);
}
uchar*
osl_pktpush(void *drv, void *skb, int bytes)
{
return (skb_push((struct sk_buff*)skb, bytes));
}
uchar*
osl_pktpull(void *drv, void *skb, int bytes)
{
return (skb_pull((struct sk_buff*)skb, bytes));
}
void*
osl_pktdup(void *drv, void *skb)
{
return (skb_clone((struct sk_buff*)skb, GFP_ATOMIC));
}
void*
osl_pktcookie(void *skb)
{
return ((void*)((struct sk_buff*)skb)->csum);
}
void
osl_pktsetcookie(void *skb, void *x)
{
((struct sk_buff*)skb)->csum = (uint)x;
}
void*
osl_pktlink(void *skb)
{
return (((struct sk_buff*)skb)->prev);
}
void
osl_pktsetlink(void *skb, void *x)
{
((struct sk_buff*)skb)->prev = (struct sk_buff*)x;
}
uint
osl_pktprio(void *skb)
{
return (((struct sk_buff*)skb)->priority);
}
void
osl_pktsetprio(void *skb, uint x)
{
((struct sk_buff*)skb)->priority = x;
}
#endif /* BINOSL */