linux/drivers/staging/brcm80211/include/bcmdefs.h

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef	_bcmdefs_h_
#define	_bcmdefs_h_

#define	SI_BUS			0
#define	PCI_BUS			1
#define	PCMCIA_BUS		2
#define SDIO_BUS		3
#define JTAG_BUS		4
#define USB_BUS			5
#define SPI_BUS			6


#ifndef OFF
#define	OFF	0
#endif

#ifndef ON
#define	ON	1		/* ON = 1 */
#endif

#define	AUTO	(-1)		/* Auto = -1 */

#ifdef mips
#define BCMFASTPATH		__attribute__ ((__section__(".text.fastpath")))
#else
#define BCMFASTPATH
#endif

/* Put some library data/code into ROM to reduce RAM requirements */
#define BCMROMFN(_fn)		_fn

/* Bus types */
#define	SI_BUS			0	/* SOC Interconnect */
#define	PCI_BUS			1	/* PCI target */
#define SDIO_BUS		3	/* SDIO target */
#define JTAG_BUS		4	/* JTAG */
#define USB_BUS			5	/* USB (does not support R/W REG) */
#define SPI_BUS			6	/* gSPI target */
#define RPC_BUS			7	/* RPC target */

/* Allows size optimization for single-bus image */
#ifdef BCMBUSTYPE
#define BUSTYPE(bus) 	(BCMBUSTYPE)
#else
#define BUSTYPE(bus) 	(bus)
#endif

/* Allows size optimization for single-backplane image */
#ifdef BCMCHIPTYPE
#define CHIPTYPE(bus) 	(BCMCHIPTYPE)
#else
#define CHIPTYPE(bus) 	(bus)
#endif

/* Allows size optimization for SPROM support */
#define SPROMBUS	(PCI_BUS)

/* Allows size optimization for single-chip image */
#ifdef BCMCHIPID
#define CHIPID(chip)	(BCMCHIPID)
#else
#define CHIPID(chip)	(chip)
#endif

#ifdef BCMCHIPREV
#define CHIPREV(rev)	(BCMCHIPREV)
#else
#define CHIPREV(rev)	(rev)
#endif

/* Defines for DMA Address Width - Shared between OSL and HNDDMA */
#define DMADDR_MASK_32 0x0	/* Address mask for 32-bits */
#define DMADDR_MASK_30 0xc0000000	/* Address mask for 30-bits */
#define DMADDR_MASK_0  0xffffffff	/* Address mask for 0-bits (hi-part) */

#define	DMADDRWIDTH_30  30	/* 30-bit addressing capability */
#define	DMADDRWIDTH_32  32	/* 32-bit addressing capability */
#define	DMADDRWIDTH_63  63	/* 64-bit addressing capability */
#define	DMADDRWIDTH_64  64	/* 64-bit addressing capability */

#ifdef BCMDMA64OSL
typedef struct {
	u32 loaddr;
	u32 hiaddr;
} dma64addr_t;

typedef dma64addr_t dmaaddr_t;
#define PHYSADDRHI(_pa) ((_pa).hiaddr)
#define PHYSADDRHISET(_pa, _val) \
	do { \
		(_pa).hiaddr = (_val);		\
	} while (0)
#define PHYSADDRLO(_pa) ((_pa).loaddr)
#define PHYSADDRLOSET(_pa, _val) \
	do { \
		(_pa).loaddr = (_val);		\
	} while (0)

#else
typedef unsigned long dmaaddr_t;
#define PHYSADDRHI(_pa) (0)
#define PHYSADDRHISET(_pa, _val)
#define PHYSADDRLO(_pa) ((_pa))
#define PHYSADDRLOSET(_pa, _val) \
	do { \
		(_pa) = (_val);			\
	} while (0)
#endif				/* BCMDMA64OSL */

/* One physical DMA segment */
typedef struct {
	dmaaddr_t addr;
	u32 length;
} hnddma_seg_t;

#define MAX_DMA_SEGS 4

typedef struct {
	void *oshdmah;		/* Opaque handle for OSL to store its information */
	uint origsize;		/* Size of the virtual packet */
	uint nsegs;
	hnddma_seg_t segs[MAX_DMA_SEGS];
} hnddma_seg_map_t;

/* packet headroom necessary to accommodate the largest header in the system, (i.e TXOFF).
 * By doing, we avoid the need  to allocate an extra buffer for the header when bridging to WL.
 * There is a compile time check in wlc.c which ensure that this value is at least as big
 * as TXOFF. This value is used in dma_rxfill (hnddma.c).
 */

#define BCMEXTRAHDROOM 172

/* Headroom required for dongle-to-host communication.  Packets allocated
 * locally in the dongle (e.g. for CDC ioctls or RNDIS messages) should
 * leave this much room in front for low-level message headers which may
 * be needed to get across the dongle bus to the host.  (These messages
 * don't go over the network, so room for the full WL header above would
 * be a waste.).
*/
#define BCMDONGLEHDRSZ 12
#define BCMDONGLEPADSZ 16

#define BCMDONGLEOVERHEAD	(BCMDONGLEHDRSZ + BCMDONGLEPADSZ)

#ifdef BCMDBG

#define BCMDBG_ERR

#ifndef BCMDBG_ASSERT
#define BCMDBG_ASSERT
#endif				/* BCMDBG_ASSERT */

#endif				/* BCMDBG */

#if defined(BCMDBG_ASSERT)
#define BCMASSERT_SUPPORT
#endif

/* Macros for doing definition and get/set of bitfields
 * Usage example, e.g. a three-bit field (bits 4-6):
 *    #define <NAME>_M	BITFIELD_MASK(3)
 *    #define <NAME>_S	4
 * ...
 *    regval = R_REG(osh, &regs->regfoo);
 *    field = GFIELD(regval, <NAME>);
 *    regval = SFIELD(regval, <NAME>, 1);
 *    W_REG(osh, &regs->regfoo, regval);
 */
#define BITFIELD_MASK(width) \
		(((unsigned)1 << (width)) - 1)
#define GFIELD(val, field) \
		(((val) >> field ## _S) & field ## _M)
#define SFIELD(val, field, bits) \
		(((val) & (~(field ## _M << field ## _S))) | \
		 ((unsigned)(bits) << field ## _S))

/* define BCMSMALL to remove misc features for memory-constrained environments */
#define	BCMSPACE
#define bcmspace	true	/* if (bcmspace) code is retained */

/* Max. nvram variable table size */
#define	MAXSZ_NVRAM_VARS	4096

#endif				/* _bcmdefs_h_ */