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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

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/* $OpenBSD: if_ixgb_osdep.h,v 1.2 2006/05/01 21:01:12 brad Exp $ */

#ifndef _IXGB_OPENBSD_OS_H_
#define _IXGB_OPENBSD_OS_H_

#define ASSERT(x)	if(!(x)) panic("IXGB: x")

/* The happy-fun DELAY macro is defined in /usr/src/sys/i386/include/clock.h */
#define usec_delay(x)	DELAY(x)
#define msec_delay(x)	DELAY(1000*(x))

#define DBG 0 
#define MSGOUT(S, A, B)	printf(S "\n", A, B)
#define DEBUGFUNC(F)	DEBUGOUT(F);
#if DBG
	#define DEBUGOUT(S)			printf(S "\n")
	#define DEBUGOUT1(S,A)			printf(S "\n",A)
	#define DEBUGOUT2(S,A,B)		printf(S "\n",A,B)
	#define DEBUGOUT3(S,A,B,C)		printf(S "\n",A,B,C)
	#define DEBUGOUT7(S,A,B,C,D,E,F,G)	printf(S "\n",A,B,C,D,E,F,G)
#else
	#define DEBUGOUT(S)
	#define DEBUGOUT1(S,A)
	#define DEBUGOUT2(S,A,B)
	#define DEBUGOUT3(S,A,B,C)
	#define DEBUGOUT7(S,A,B,C,D,E,F,G)
#endif

#define CMD_MEM_WRT_INVALIDATE		0x0010	/* BIT_4 */

#define le16_to_cpu 

struct ixgb_osdep
{
	bus_space_tag_t		mem_bus_space_tag;
	bus_space_handle_t	mem_bus_space_handle;
	struct device		*dev;

	struct pci_attach_args	ixgb_pa;

	bus_size_t		ixgb_memsize;
	bus_addr_t		ixgb_membase;
};

#define IXGB_WRITE_FLUSH(a)	IXGB_READ_REG(a, STATUS)

#define IXGB_READ_REG(a, reg)						\
   bus_space_read_4( ((struct ixgb_osdep *)(a)->back)->mem_bus_space_tag, \
                     ((struct ixgb_osdep *)(a)->back)->mem_bus_space_handle, \
                     IXGB_##reg)

#define IXGB_WRITE_REG(a, reg, value)					\
   bus_space_write_4( ((struct ixgb_osdep *)(a)->back)->mem_bus_space_tag, \
                     ((struct ixgb_osdep *)(a)->back)->mem_bus_space_handle, \
                     IXGB_##reg, value)

#define IXGB_READ_REG_ARRAY(a, reg, offset)				\
   bus_space_read_4( ((struct ixgb_osdep *)(a)->back)->mem_bus_space_tag, \
                     ((struct ixgb_osdep *)(a)->back)->mem_bus_space_handle, \
                     (IXGB_##reg + ((offset) << 2)))

#define IXGB_WRITE_REG_ARRAY(a, reg, offset, value)			\
      bus_space_write_4( ((struct ixgb_osdep *)(a)->back)->mem_bus_space_tag, \
                      ((struct ixgb_osdep *)(a)->back)->mem_bus_space_handle, \
                      (IXGB_##reg + ((offset) << 2)), value)

#ifdef DEBUG
#define IXGB_KASSERT(exp,msg)	do { if (!(exp)) panic msg; } while (0)
#else
#define IXGB_KASSERT(exp,msg)
#endif

#endif  /* _IXGB_OPENBSD_OS_H_ */