NE2000 network interface family
[Generic DP8390 network interface family service]

Collaboration diagram for NE2000 network interface family:

Files
file	ne2000.c
	NE1000 and NE2000 network interface initialization and probe functions implementation.
file	ne2000.h
	NE1000 and NE2000 network interface definitions.
Defines
#define	N   100
	Number of bytes to transfer.
#define	milli_delay(millis)   usleep((millis) * 1000)
	Sleeps for the defined millicesonds.
#define	NE_DP8390   0x00
	DP8390 register offset.
#define	NE_DATA   0x10
	Data register.
#define	NE_RESET   0x1F
	Reset register.
#define	NE1000_START   0x2000
	NE1000 data start.
#define	NE1000_SIZE   0x2000
	NE1000 data size.
#define	NE2000_START   0x4000
	NE2000 data start.
#define	NE2000_SIZE   0x4000
	NE2000 data size.
#define	inb_ne(dep, reg)   (inb(dep->de_base_port+reg))
	Reads 1 byte register.
#define	outb_ne(dep, reg, data)   (outb(dep->de_base_port+reg, data))
	Writes 1 byte register.
#define	inw_ne(dep, reg)   (inw(dep->de_base_port+reg))
	Reads 1 word (2 bytes) register.
#define	outw_ne(dep, reg, data)   (outw(dep->de_base_port+reg, data))
	Writes 1 word (2 bytes) register.
Functions
	_PROTOTYPE (typedef int(*testf_t),(dpeth_t *dep, int pos, u8_t *pat))
	Type definition of the testing function.
static int	test_8 (dpeth_t *dep, int pos, u8_t *pat)
	Tests 8 bit NE2000 network interface.
static int	test_16 (dpeth_t *dep, int pos, u8_t *pat)
	Tests 16 bit NE2000 network interface.
static void	ne_stop (dpeth_t *dep)
	Stops the NE2000 network interface.
void	ne_init (struct dpeth *dep)
	Initializes the NE2000 network interface.
int	ne_probe (dpeth_t *dep)
	Probes a NE2000 or NE1000 network interface.
Variables
u8_t	pat0 [] = {0x00, 0x00, 0x00, 0x00}
	First data pattern.
u8_t	pat1 [] = {0xFF, 0xFF, 0xFF, 0xFF}
	Second data pattern.
u8_t	pat2 [] = {0xA5, 0x5A, 0x69, 0x96}
	Third data pattern.
u8_t	pat3 [] = {0x96, 0x69, 0x5A, 0xA5}
	Fourth data pattern.

---

Define Documentation

#define inb_ne	(	dep,
		reg		)	(inb(dep->de_base_port+reg))

Reads 1 byte register.

Parameters:

[in]	dep	The network interface structure.
[in]	reg	The register offset.

Returns:

The read value.

Referenced by ne_init(), ne_probe(), ne_stop(), and test_8().

#define inw_ne	(	dep,
		reg		)	(inw(dep->de_base_port+reg))

Reads 1 word (2 bytes) register.

Parameters:

[in]	dep	The network interface structure.
[in]	reg	The register offset.

Returns:

The read value.

Referenced by ne_init(), and test_16().

#define milli_delay

(

millis

)

usleep((millis) * 1000)

Sleeps for the defined millicesonds.

Parameters:

[in]

millis

The number of milliseconds to sleep.

Referenced by ne_probe(), and ne_stop().

#define N   100

Number of bytes to transfer.

Referenced by test_16(), and test_8().

#define NE1000_SIZE   0x2000

NE1000 data size.

Referenced by ne_init(), and ne_probe().

#define NE1000_START   0x2000

NE1000 data start.

Referenced by ne_init(), and ne_probe().

#define NE2000_SIZE   0x4000

NE2000 data size.

Referenced by ne_init(), and ne_probe().

#define NE2000_START   0x4000

NE2000 data start.

Referenced by ne_init(), and ne_probe().

#define NE_DATA   0x10

Data register.

Referenced by ne_init(), test_16(), and test_8().

#define NE_DP8390   0x00

DP8390 register offset.

Referenced by ne_probe().

#define NE_RESET   0x1F

Reset register.

Referenced by ne_probe(), and ne_stop().

#define outb_ne	(	dep,
		reg,
		data		)	(outb(dep->de_base_port+reg, data))

Writes 1 byte register.

Parameters:

[in]	dep	The network interface structure.
[in]	reg	The register offset.
[in]	data	The value to be written.

Referenced by ne_probe(), ne_stop(), and test_8().

#define outw_ne	(	dep,
		reg,
		data		)	(outw(dep->de_base_port+reg, data))

Writes 1 word (2 bytes) register.

Parameters:

[in]	dep	The network interface structure.
[in]	reg	The register offset.
[in]	data	The value to be written.

Referenced by test_16().

---

Function Documentation

_PROTOTYPE	(	typedef int *	testf_t,
		(dpeth_t *dep, int pos, u8_t *pat)
	)

Type definition of the testing function.

void ne_init

(

struct dpeth *

dep

)

Initializes the NE2000 network interface.

Parameters:

[in,out]

dep

The network interface structure.

References CR_DM_RR, CR_PS_P0, CR_STA, debug, DEI_DEFAULT, DP_CR, DP_PAGESIZE, DP_RBCR0, DP_RBCR1, DP_RSAR0, DP_RSAR1, inb_ne, inw_ne, NE1000_SIZE, NE1000_START, NE2000_SIZE, NE2000_START, NE_DATA, outb_reg0, SENDQ_NR, and SENDQ_PAGES.

Referenced by ne_probe().

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int ne_probe

(

struct dpeth *

dep

)

Probes a NE2000 or NE1000 network interface.

Parameters:

[in]

dep

The network interface structure.

Returns:

1 if the NE2000 network interface is present.

0 otherwise.

References CR_DM_ABORT, CR_STP, DCR_8BYTES, DCR_BMS, DCR_BYTEWIDE, DCR_WORDWIDE, DP_CR, DP_DCR, DP_ISR, DP_RCR, DP_TCR, inb_ne, inb_reg0, ISR_RST, milli_delay, NE1000_SIZE, NE1000_START, NE2000_SIZE, NE2000_START, NE_DP8390, ne_init(), NE_RESET, ne_stop(), outb_ne, outb_reg0, RCR_MON, TCR_NORMAL, test_16(), and test_8().

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static void ne_stop

(

dpeth_t *

dep

)

[static]

Stops the NE2000 network interface.

Parameters:

[in,out]

dep

The network interface structure.

References inb_ne, milli_delay, NE_RESET, and outb_ne.

Referenced by ne_probe().

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static int test_16	(	dpeth_t *	dep,
		int	pos,
		u8_t *	pat
	)			[static]

Tests 16 bit NE2000 network interface.

Parameters:

[in,out]	dep	The network interface structure.
[in]	pos	The starting position.
[in]	pat	The data pattern to be written.

Returns:

True on success.

FALSE otherwise.

References CR_DM_RR, CR_DM_RW, CR_PS_P0, CR_STA, debug, DP_CR, DP_ISR, DP_RBCR0, DP_RBCR1, DP_RSAR0, DP_RSAR1, inb_reg0, inw_ne, ISR_RDC, memcmp, N, NE_DATA, outb_reg0, and outw_ne.

Referenced by ne_probe().

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static int test_8	(	dpeth_t *	dep,
		int	pos,
		u8_t *	pat
	)			[static]

Tests 8 bit NE2000 network interface.

Parameters:

[in,out]	dep	The network interface structure.
[in]	pos	The starting position.
[in]	pat	The data pattern to be written.

Returns:

True on success.

FALSE otherwise.

References CR_DM_RR, CR_DM_RW, CR_PS_P0, CR_STA, debug, DP_CR, DP_ISR, DP_RBCR0, DP_RBCR1, DP_RSAR0, DP_RSAR1, inb_ne, inb_reg0, ISR_RDC, memcmp, N, NE_DATA, outb_ne, and outb_reg0.

Referenced by ne_probe().

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Variable Documentation

u8_t pat0[] = {0x00, 0x00, 0x00, 0x00}

First data pattern.

u8_t pat1[] = {0xFF, 0xFF, 0xFF, 0xFF}

Second data pattern.

u8_t pat2[] = {0xA5, 0x5A, 0x69, 0x96}

Third data pattern.

u8_t pat3[] = {0x96, 0x69, 0x5A, 0xA5}

Fourth data pattern.