i82365.c

linux下从网卡远程启动

/*
 *	i82365.c
 *	Support for i82365 and similar ISA-to-PCMCIA bridges
 *
 *	Taken from Linux kernel sources, distributed under GPL2
 *
 *   Software distributed under the License is distributed on an "AS
 *   IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 *   implied. See the License for the specific language governing
 *   rights and limitations under the License.
 *
 *   The initial developer of the original code is David A. Hinds
 *   <[e-mail]>.  Portions created by David A. Hinds
 *   are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 *
 *	Ported by: Anselm Martin Hoffmeister, Stockholm Projekt Computer-Service, Sankt Augustin/Bonn, GERMANY
 */

/*
 *
 *
 *			******************************
 *			PLEASE DO NOT YET WORK ON THIS
 *			******************************
 *
 *	I'm still fixing it up on every end, so we most probably would interfere
 *	at some point. If there's anything obvious or better, not-so-obvious,
 *	please contact me by e-mail: anselm (AT) hoffmeister (DOT) be   *THANKS*
 */
#include "../include/pcmcia.h"
#include "../include/pcmcia-opts.h"
#include "../include/i82365.h"

#ifndef CONFIG_ISA
#error	PCMCIA_I82365 only works with ISA defined - set CONFIG_ISA
#endif

typedef enum pcic_id {
    IS_I82365A, IS_I82365B, IS_I82365DF,
    IS_IBM, IS_RF5Cx96, IS_VLSI, IS_VG468, IS_VG469,
    IS_PD6710, IS_PD672X, IS_VT83C469,
} pcic_id;

/* Flags for classifying groups of controllers */
#define IS_VADEM        0x0001
#define IS_CIRRUS       0x0002
#define IS_TI           0x0004
#define IS_O2MICRO      0x0008
#define IS_VIA          0x0010
#define IS_TOPIC        0x0020
#define IS_RICOH        0x0040
#define IS_UNKNOWN      0x0400
#define IS_VG_PWR       0x0800
#define IS_DF_PWR       0x1000
#define IS_PCI          0x2000
#define IS_ALIVE        0x8000

typedef struct pcic_t {
    char                *name;
    u_short             flags;
} pcic_t;

static pcic_t pcic[] = {
    { "Intel i82365sl A step", 0 },
    { "Intel i82365sl B step", 0 },
    { "Intel i82365sl DF", IS_DF_PWR },
    { "IBM Clone", 0 },
    { "Ricoh RF5C296/396", 0 },
    { "VLSI 82C146", 0 },
    { "Vadem VG-468", IS_VADEM },
    { "Vadem VG-469", IS_VADEM|IS_VG_PWR },
    { "Cirrus PD6710", IS_CIRRUS },
    { "Cirrus PD672x", IS_CIRRUS },
    { "VIA VT83C469", IS_CIRRUS|IS_VIA },
};

typedef struct cirrus_state_t {
    u_char              misc1, misc2;
    u_char              timer[6];
} cirrus_state_t;

typedef struct vg46x_state_t {
    u_char              ctl, ema;
} vg46x_state_t;

typedef struct socket_info_t {
    u_short             type, flags;
    socket_cap_t        cap;
    ioaddr_t            ioaddr;
    u_short             psock;
    u_char              cs_irq, intr;
    void                (*handler)(void *info, u_int events);
    void                *info;
    union {
        cirrus_state_t          cirrus;
        vg46x_state_t           vg46x;
    } state;
} socket_info_t;

//static socket_info_t socket[8];

int	i365_base = 0x3e0; // Default in Linux kernel
int	cycle_time = 120; // External clock time in ns, 120ns =~ 8.33 MHz
int	mydriverid = 0;

void	phex ( unsigned char c );
/*static int to_cycles(int ns)
{
    return ns/cycle_time;
}
*/
/*static int to_ns(int cycles)
{
    return cycle_time*cycles;
}
*/

static u_char i365_get(u_short sock, u_short reg)
{
    //unsigned long flags;
    //spin_lock_irqsave(&bus_lock,flags);
    {
        ioaddr_t port = pccsock[sock].ioaddr;
        u_char val;
        reg = I365_REG(pccsock[sock].internalid, reg);
        outb(reg, port); val = inb(port+1);
        //spin_unlock_irqrestore(&bus_lock,flags);
        return val;
    }
}

static void i365_set(u_short sock, u_short reg, u_char data)
{
    //unsigned long flags;
    //spin_lock_irqsave(&bus_lock,flags);
    {
        ioaddr_t port = pccsock[sock].ioaddr;
        u_char val = I365_REG(pccsock[sock].internalid, reg);
        outb(val, port); outb(data, port+1);
        //spin_unlock_irqrestore(&bus_lock,flags);
    }
}

void	add_socket_i365(u_short port, int psock, int type) {
	pccsock[pccsocks].ioaddr = port;
	pccsock[pccsocks].internalid = psock;
	pccsock[pccsocks].type = type;
	pccsock[pccsocks].flags = pcic[type].flags;
	pccsock[pccsocks].drivernum = mydriverid;
	pccsock[pccsocks].configoffset = -1;
	// Find out if a card in inside that socket
	pccsock[pccsocks].status = (( 12 == (i365_get(pccsocks,I365_STATUS)&12) )  ?  HASCARD : EMPTY );
	// *TODO* check if that's all
	if ( 0 == (psock & 1) ) {
		printf ( "Found a PCMCIA controller (i82365) at io %x, type '%s'\n", port, pcic[type].name );
		//	pccsock[pccsocks].status == HASCARD? "holds card":"empty" );
	}
	pccsocks++;
	return;
}

void	i365_bset(u_short sock, u_short reg, u_char mask) {
	u_char d = i365_get(sock, reg);
	d |= mask;
	i365_set(sock, reg, d);
}

void	i365_bclr(u_short sock, u_short reg, u_char mask) {
	u_char d = i365_get(sock, reg);
	d &= ~mask;
	i365_set(sock, reg, d);
}


/*static void i365_bflip(u_short sock, u_short reg, u_char mask, int b)
{
    u_char d = i365_get(sock, reg);
    if (b)
        d |= mask;
    else
        d &= ~mask;
    i365_set(sock, reg, d);
}
*/

/*
static u_short i365_get_pair(u_short sock, u_short reg)
{
    u_short a, b;
    a = i365_get(sock, reg);
    b = i365_get(sock, reg+1);
    return (a + (b<<8));
}
*/

/*
static void i365_set_pair(u_short sock, u_short reg, u_short data)
{
    i365_set(sock, reg, data & 0xff);
    i365_set(sock, reg+1, data >> 8);
}
*/
int	identify_i365 ( u_short port, u_short sock ) {
	u_char val;
	int type = -1;
	/* Use the next free entry in the socket table */
	pccsock[pccsocks].ioaddr = port;
	pccsock[pccsocks].internalid = sock;
	// *TODO* wakeup a sleepy cirrus controller?

	if ((val = i365_get(pccsocks, I365_IDENT)) & 0x70)
	    return -1;
	switch (val) {
	case 0x82:
	    type = IS_I82365A; break;
	case 0x83:
	    type = IS_I82365B; break;
	case 0x84:
	    type = IS_I82365DF; break;
	case 0x88: case 0x89: case 0x8a:
	    type = IS_IBM; break;
	}
	/* Check for Vadem VG-468 chips */
	outb(0x0e, port);
	outb(0x37, port);
	i365_bset(pccsocks, VG468_MISC, VG468_MISC_VADEMREV);
	val = i365_get(pccsocks, I365_IDENT);
	if (val & I365_IDENT_VADEM) {
	    i365_bclr(pccsocks, VG468_MISC, VG468_MISC_VADEMREV);
	    type = ((val & 7) >= 4) ? IS_VG469 : IS_VG468;
	}

	/* Check for Ricoh chips */
	val = i365_get(pccsocks, RF5C_CHIP_ID);
	if ((val == RF5C_CHIP_RF5C296) || (val == RF5C_CHIP_RF5C396)) type = IS_RF5Cx96;

	/* Check for Cirrus CL-PD67xx chips */
	i365_set(pccsocks, PD67_CHIP_INFO, 0);
	val = i365_get(pccsocks, PD67_CHIP_INFO);
	if ((val & PD67_INFO_CHIP_ID) == PD67_INFO_CHIP_ID) {
	    val = i365_get(pccsocks, PD67_CHIP_INFO);
	    if ((val & PD67_INFO_CHIP_ID) == 0) {
		type = (val & PD67_INFO_SLOTS) ? IS_PD672X : IS_PD6710;
		i365_set(pccsocks, PD67_EXT_INDEX, 0xe5);
		if (i365_get(pccsocks, PD67_EXT_INDEX) != 0xe5) type = IS_VT83C469;
	    }
	}
    return type;
}

int	init_i82365(void) {
	int	i, j, sock, k, ns, id;
	//unsigned int ui,uj;
	//unsigned char * upc;
	ioaddr_t port;
	int	i82365s = 0;
	// Change from kernel: No irq init, no check_region, no isapnp support
	// No ignore socket, no extra sockets to check (so it's easier here :-/)
	// Probably we don't need any of them; in case YOU do, SHOUT AT ME!
	id = identify_i365(i365_base, 0);
	if ((id == IS_I82365DF) && (identify_i365(i365_base, 1) != id)) {
		for (i = 0; i < 4; i++) {
		    port = i365_base + ((i & 1) << 2) + ((i & 2) << 1);
		    sock = (i & 1) << 1;
		    if (identify_i365(port, sock) == IS_I82365DF) {
			add_socket_i365(port, sock, IS_VLSI);
		    }
		}
	} else {
	  for (i = 0; i < 4; i += 2) {
            port = i365_base + 2*(i>>2);
            sock = (i & 3);
            id = identify_i365(port, sock);
            if (id < 0) continue;

            for (j = ns = 0; j < 2; j++) {
                /* Does the socket exist? */
                if (identify_i365(port, sock+j) < 0)	continue;
                /* Check for bad socket decode */
                for (k = 0; k <= i82365s; k++)
                    i365_set(k, I365_MEM(0)+I365_W_OFF, k);
                for (k = 0; k <= i82365s; k++)
                    if (i365_get(k, I365_MEM(0)+I365_W_OFF) != k)
                        break;
                if (k <= i82365s) break;
                add_socket_i365(port, sock+j, id); ns++;
            }
	  }
	}
	return	0;







/*	printf ( "Selecting config 1: io 0x300 @byte 87*2.." );
	upc[(2*87)] = 2;
	i365_bclr(1, I365_ADDRWIN, 1 );
	i365_set(1,I365_INTCTL, 0x65 ); //no-reset, memory-card
	i365_set(1, I365_IO(0)+0, 0x20 );
	i365_set(1, I365_IO(0)+1, 0x03 );
	i365_set(1, I365_IO(0)+2, 0x3f );
	i365_set(1, I365_IO(0)+3, 0x03 );
	i365_set(1, 0x3a, 0x05 );
	i365_set(1, 0x3b, 0x05 );
	i365_set(1, 0x3c, 0x05 );
	i365_set(1, 0x3d, 0x05 );
	i365_set(1, 0x3e, 0x05 );
	i365_set(1, 0x3f, 0x05 );
	i365_set(1, 0x07, 0x0a );
	i365_set(1, I365_ADDRWIN, 0x40 ); // 0x40
	printf ( "!\n" ); getchar();
	printf ( "\n" );
	return 0; */
}

void	phex ( unsigned char c ) {
	unsigned char a = 0, b = 0;
	b = ( c & 0xf );
	if ( b > 9 ) b += ('a'-'9'-1);
	b += '0';
	a = ( c & 0xf0 ) >> 4;
	if ( a > 9 ) a += ('a'-'9'-1);
	a += '0';
	printf ( "%c%c ", a, b );