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/*
* Linux OS Independent Layer
*
* Copyright 2006, 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: linux_osl.h,v 1.1.1.13 2006/04/08 06:13:39 honor Exp $
*/
#ifndef _linux_osl_h_
#define _linux_osl_h_
#include <typedefs.h>
#include <linuxver.h>
#include <osl.h>
#define OSL_PKTTAG_SZ 32 /* Size of PktTag */
/* osl handle type forward declaration */
typedef struct osl_dmainfo osldma_t;
/* OSL initialization */
extern osl_t *osl_attach(void *pdev, bool pkttag);
extern void osl_detach(osl_t *osh);
/* host/bus architecture-specific byte swap */
#define BUS_SWAP32(v) (v)
#define MALLOC_FAILED(osh) osl_malloc_failed((osh))
extern void *osl_malloc(osl_t *osh, uint size);
extern void osl_mfree(osl_t *osh, void *addr, uint size);
extern uint osl_malloced(osl_t *osh);
extern uint osl_malloc_failed(osl_t *osh);
/* API for DMA addressing capability */
#define DMA_MAP(osh, va, size, direction, p) \
osl_dma_map((osh), (va), (size), (direction))
#define DMA_UNMAP(osh, pa, size, direction, p) \
osl_dma_unmap((osh), (pa), (size), (direction))
static inline uint
osl_dma_map(void *osh, void *va, uint size, int direction)
{
int dir;
struct pci_dev *dev;
dev = (osh == NULL ? NULL : ((osl_t *)osh)->pdev);
dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
return (pci_map_single(dev, va, size, dir));
}
static inline void
osl_dma_unmap(void *osh, uint pa, uint size, int direction)
{
int dir;
struct pci_dev *dev;
dev = (osh == NULL ? NULL : ((osl_t *)osh)->pdev);
dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
pci_unmap_single(dev, (uint32)pa, size, dir);
}
#define OSL_DMADDRWIDTH(osh, addrwidth) do {} while (0)
#define DMA_CONSISTENT_ALIGN PAGE_SIZE
#define DMA_ALLOC_CONSISTENT(osh, size, pap, dmah) \
osl_dma_alloc_consistent((osh), (size), (pap))
#define DMA_FREE_CONSISTENT(osh, va, size, pa, dmah) \
osl_dma_free_consistent((osh), (void*)(va), (size), (pa))
static inline void*
osl_dma_alloc_consistent(osl_t *osh, uint size, ulong *pap)
{
return (pci_alloc_consistent(osh->pdev, size, (dma_addr_t*)pap));
}
static inline void
osl_dma_free_consistent(osl_t *osh, void *va, uint size, ulong pa)
{
pci_free_consistent(osh->pdev, size, va, (dma_addr_t)pa);
}
/* register access macros */
#if defined(BCMJTAG)
#include <bcmjtag.h>
#define R_REG(osh, r) bcmjtag_read(NULL, (uint32)(r), sizeof(*(r)))
#define W_REG(osh, r, v) bcmjtag_write(NULL, (uint32)(r), (uint32)(v), sizeof(*(r)))
#endif /* defined(BCMSDIO) */
/* packet primitives */
#define PKTGET(osh, len, send) osl_pktget((osh), (len), (send))
#define PKTFREE(osh, skb, send) osl_pktfree((osh), (skb))
#define PKTDATA(osh, skb) (((struct sk_buff*)(skb))->data)
#define PKTLEN(osh, skb) (((struct sk_buff*)(skb))->len)
#define PKTHEADROOM(osh, skb) (PKTDATA(osh, skb)-(((struct sk_buff*)(skb))->head))
#define PKTTAILROOM(osh, skb) ((((struct sk_buff*)(skb))->end)-(((struct sk_buff*)(skb))->tail))
#define PKTNEXT(osh, skb) (((struct sk_buff*)(skb))->next)
#define PKTSETNEXT(osh, skb, x) (((struct sk_buff*)(skb))->next = (struct sk_buff*)(x))
#define PKTSETLEN(osh, skb, len) __skb_trim((struct sk_buff*)(skb), (len))
#define PKTPUSH(osh, skb, bytes) skb_push((struct sk_buff*)(skb), (bytes))
#define PKTPULL(osh, skb, bytes) skb_pull((struct sk_buff*)(skb), (bytes))
#define PKTDUP(osh, skb) osl_pktdup((osh), (skb))
#define PKTTAG(skb) ((void*)(((struct sk_buff*)(skb))->cb))
#define PKTALLOCED(osh) osl_pktalloced((osh))
#define PKTLIST_DUMP(osh, buf)
/* Convert a native(OS) packet to driver packet.
* In the process, native packet is destroyed, there is no copying
* Also, a packettag is zeroed out
*/
static INLINE void *
osl_pkt_frmnative(struct osl_pubinfo *osh, struct sk_buff *skb)
{
struct sk_buff *nskb;
if (osh->pkttag)
bzero((void*)skb->cb, OSL_PKTTAG_SZ);
/* Increment the packet counter */
for (nskb = skb; nskb; nskb = nskb->next) {
osh->pktalloced++;
}
return (void *)skb;
}
#define PKTFRMNATIVE(osh, skb) osl_pkt_frmnative(((struct osl_pubinfo *)osh), \
(struct sk_buff*)(skb))
/* Convert a driver packet to native(OS) packet
* In the process, packettag is zeroed out before sending up
* IP code depends on skb->cb to be setup correctly with various options
* In our case, that means it should be 0
*/
static INLINE struct sk_buff *
osl_pkt_tonative(struct osl_pubinfo *osh, void *pkt)
{
struct sk_buff *nskb;
if (osh->pkttag)
bzero(((struct sk_buff*)pkt)->cb, OSL_PKTTAG_SZ);
/* Decrement the packet counter */
for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next) {
osh->pktalloced--;
}
return (struct sk_buff *)pkt;
}
#define PKTTONATIVE(osh, pkt) osl_pkt_tonative((struct osl_pubinfo *)(osh), (pkt))
#define PKTLINK(skb) (((struct sk_buff*)(skb))->prev)
#define PKTSETLINK(skb, x) (((struct sk_buff*)(skb))->prev = (struct sk_buff*)(x))
#define PKTPRIO(skb) (((struct sk_buff*)(skb))->priority)
#define PKTSETPRIO(skb, x) (((struct sk_buff*)(skb))->priority = (x))
#define PKTSHARED(skb) (((struct sk_buff*)(skb))->cloned)
extern void *osl_pktget(osl_t *osh, uint len, bool send);
extern void osl_pktfree(osl_t *osh, void *skb);
extern void *osl_pktdup(osl_t *osh, void *skb);
extern uint osl_pktalloced(osl_t *osh);
#define OSL_ERROR(bcmerror) osl_error(bcmerror)
extern int osl_error(int bcmerror);
/* the largest reasonable packet buffer driver uses for ethernet MTU in bytes */
#define PKTBUFSZ 2048 /* largest reasonable packet buffer, driver uses for ethernet MTU */
#endif /* _linux_osl_h_ */
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