/*======================================================================

    PCMCIA controller probe

    probe.c 1.41 1999/07/20 16:02:27

    The contents of this file are subject to the Mozilla Public
    License Version 1.1 (the "License"); you may not use this file
    except in compliance with the License. You may obtain a copy of
    the License at http://www.mozilla.org/MPL/

    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
    <dhinds@hyper.stanford.edu>.  Portions created by David A. Hinds
    are Copyright (C) 1998 David A. Hinds.  All Rights Reserved.
    
======================================================================*/

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>

#ifdef __GLIBC__
#include <sys/io.h>
#else
#include <asm/io.h>
#endif

#include <pcmcia/config.h>
#include "i82365.h"
#include "cirrus.h"
#include "vg468.h"
#include "tcic.h"

static int i365_base = 0x03e0;

typedef u_short ioaddr_t;

/*====================================================================*/

#ifdef CONFIG_PCI

typedef struct {
    u_short	vendor, device;
    char	*tag;
    char	*name;
} pci_id_t;

pci_id_t pci_id[] = {
    { 0x1013, 0x6729, "Cirrus Logic CL 6729", "Cirrus PD6729" },
    { 0x1013, 0x1110, "Cirrus Logic PD 6832", "Cirrus PD6832" },
    { 0x10b3, 0xb106, "SMC 34C90", "SMC 34C90" },
    { 0x1180, 0x0465, "Ricoh RL5C465", "Ricoh RL5C465" },
    { 0x1180, 0x0466, "Ricoh RL5C466", "Ricoh RL5C466" },
    { 0x1180, 0x0475, "Ricoh RL5C475", "Ricoh RL5C475" },
    { 0x1180, 0x0476, "Ricoh RL5C476", "Ricoh RL5C476" },
    { 0x1180, 0x0478, "Ricoh RL5C478", "Ricoh RL5C478" },
    { 0x104c, 0xac12, "Texas Instruments PCI1130", "TI 1130" },
    { 0x104c, 0xac13, "Texas Instruments PCI1031", "TI 1031" },
    { 0x104c, 0xac15, "Texas Instruments PCI1131", "TI 1131" },
    { 0x104c, 0xac16, "Texas Instruments PCI1250", "TI 1250A" },
    { 0x104c, 0xac17, "Texas Instruments PCI1220", "TI 1220" },
    { 0x104c, 0xac19, "Texas Instruments PCI1221", "TI 1221" },
    { 0x104c, 0xac1a, "Texas Instruments PCI1210", "TI 1210" },
    { 0x104c, 0xac1d, "Texas Instruments PCI1251A", "TI 1251A" },
    { 0x104c, 0xac1f, "Texas Instruments PCI1251B", "TI 1251B" },
    { 0x104c, 0xac1b, "Texas Instruments PCI1450", "TI 1450" },
    { 0x104c, 0xac1c, "Texas Instruments PCI1225", "TI 1225" },
    { 0x1217, 0x6729, "O2 Micro 6729", "O2Micro OZ6729" },
    { 0x1217, 0x673a, "O2 Micro 6730", "O2Micro OZ6730" },
    { 0x1217, 0x6832, "O2 Micro 6832", "O2Micro OZ6832" },
    { 0x1217, 0x6836, "O2 Micro 6836", "O2Micro OZ6836" },
    { 0x1179, 0x0603, "Toshiba ToPIC95-A", "Toshiba ToPIC95-A" },
    { 0x1179, 0x060a, "Toshiba ToPIC95-B", "Toshiba ToPIC95-B" },
    { 0x1179, 0x060f, "Toshiba ToPIC97", "Toshiba ToPIC97" },
    { 0x119b, 0x1221, "Omega Micro 82C092G", "Omega Micro 82C092G" },
    { 0x8086, 0x1221, "Intel 82092AA", "Intel 82092AA" }
};
#define PCI_COUNT (sizeof(pci_id)/sizeof(pci_id_t))

static int pci_probe(int verbose, int module)
{
    char s[256], *t, *name = NULL;
    u_int device, vendor, i;
    FILE *f;
    
    if (!module)
	printf("PCI bridge probe: ");

    if ((f = fopen("/proc/bus/pci/devices", "r")) != NULL) {
	while (fgets(s, 256, f) != NULL) {
	    u_int n = strtoul(s+5, NULL, 16);
	    vendor = (n >> 16); device = (n & 0xffff);
	    for (i = 0; i < PCI_COUNT; i++)
		if ((vendor == pci_id[i].vendor) &&
		    (device == pci_id[i].device)) break;
	    if (i < PCI_COUNT) {
		name = pci_id[i].name;
		break;
	    }
	}
    } else if ((f = fopen("/proc/pci", "r")) != NULL) {
	while (fgets(s, 256, f) != NULL) {
	    t = strstr(s, "Device id=");
	    if (t) {
		device = strtoul(t+10, NULL, 16);
		t = strstr(s, "Vendor id=");
		vendor = strtoul(t+10, NULL, 16);
		for (i = 0; i < PCI_COUNT; i++)
		    if ((vendor == pci_id[i].vendor) &&
			(device == pci_id[i].device)) break;
	    } else
		for (i = 0; i < PCI_COUNT; i++)
		    if (strstr(s, pci_id[i].tag) != NULL) break;
	    if (i != PCI_COUNT) {
		name = pci_id[i].name;
		break;
	    } else {
		t = strstr(s, "CardBus bridge");
		if (t != NULL) {
		    name = t + 16;
		    t = strchr(s, '(');
		    t[-1] = '\0';
		    break;
		}
	    }
	}
    }
    
    if (name) {
	if (module)
	    printf("i82365\n");
	else
	    printf("%s found, 2 sockets.\n", name);
	return 0;
    } else {
	if (!module)
	    printf("not found.\n");
	return -ENODEV;
    }
}
#endif

/*====================================================================*/

static u_char i365_get(u_short sock, u_short reg)
{
    u_char val = I365_REG(sock, reg);
    outb(val, i365_base); val = inb(i365_base+1);
    return val;
}

static void i365_set(u_short sock, u_short reg, u_char data)
{
    u_char val = I365_REG(sock, reg);
    outb(val, i365_base); outb(data, i365_base+1);
}

static 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);
}

static 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);
}

/*====================================================================*/

int i365_probe(int verbose, int module)
{
    int val, sock, done;
    char *name = "i82365sl";

    if (!module)
	printf("Intel PCIC probe: ");
    if (verbose) printf("\n");
    
    sock = done = 0;
    ioperm(i365_base, 4, 1);
    ioperm(0x80, 1, 1);
    for (; sock < 2; sock++) {
	val = i365_get(sock, I365_IDENT);
	if (verbose)
	    printf("  ident(%d)=%#2.2x", sock, val); 
	switch (val) {
	case 0x82:
	    name = "i82365sl A step";
	    break;
	case 0x83:
	    name = "i82365sl B step";
	    break;
	case 0x84:
	    name = "VLSI 82C146";
	    break;
	case 0x88: case 0x89: case 0x8a:
	    name = "IBM Clone";
	    break;
	case 0x8b: case 0x8c:
	    break;
	default:
	    done = 1;
	}
	if (done) break;
    }

    if (verbose) printf("\n  ");
    if (sock == 0) {
	if (!module)
	    printf("not found.\n");
	return -ENODEV;
    }

    if ((sock == 2) && (strcmp(name, "VLSI 82C146") == 0))
	name = "i82365sl DF";

    /* Check for Vadem chips */
    outb(0x0e, i365_base);
    outb(0x37, i365_base);
    i365_bset(0, VG468_MISC, VG468_MISC_VADEMREV);
    val = i365_get(0, I365_IDENT);
    if (val & I365_IDENT_VADEM) {
	if ((val & 7) < 4)
	    name = "Vadem VG-468";
	else
	    name = "Vadem VG-469";
	i365_bclr(0, VG468_MISC, VG468_MISC_VADEMREV);
    }
    
    /* Check for Cirrus CL-PD67xx chips */
    i365_set(0, PD67_CHIP_INFO, 0);
    val = i365_get(0, PD67_CHIP_INFO);
    if ((val & PD67_INFO_CHIP_ID) == PD67_INFO_CHIP_ID) {
	val = i365_get(0, PD67_CHIP_INFO);
	if ((val & PD67_INFO_CHIP_ID) == 0) {
	    if (val & PD67_INFO_SLOTS)
		name = "Cirrus CL-PD672x";
	    else {
		name = "Cirrus CL-PD6710";
		sock = 1;
	    }
	    i365_set(0, PD67_EXT_INDEX, 0xe5);
	    if (i365_get(0, PD67_EXT_INDEX) != 0xe5)
		name = "VIA VT83C469";
	}
    }

    if (module)
	printf("i82365\n");
    else
	printf("%s found, %d sockets.\n", name, sock);
    return 0;
    
} /* i365_probe */
  
/*====================================================================*/

static u_char tcic_getb(ioaddr_t base, u_char reg)
{
    u_char val = inb(base+reg);
    return val;
}

static void tcic_setb(ioaddr_t base, u_char reg, u_char data)
{
    outb(data, base+reg);
}

static u_short tcic_getw(ioaddr_t base, u_char reg)
{
    u_short val = inw(base+reg);
    return val;
}

static void tcic_setw(ioaddr_t base, u_char reg, u_short data)
{
    outw(data, base+reg);
}

static u_short tcic_aux_getw(ioaddr_t base, u_short reg)
{
    u_char mode = (tcic_getb(base, TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
    tcic_setb(base, TCIC_MODE, mode);
    return tcic_getw(base, TCIC_AUX);
}

static void tcic_aux_setw(ioaddr_t base, u_short reg, u_short data)
{
    u_char mode = (tcic_getb(base, TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
    tcic_setb(base, TCIC_MODE, mode);
    tcic_setw(base, TCIC_AUX, data);
}

static int get_tcic_id(ioaddr_t base)
{
    u_short id;
    tcic_aux_setw(base, TCIC_AUX_TEST, TCIC_TEST_DIAG);
    id = tcic_aux_getw(base, TCIC_AUX_ILOCK);
    id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH;
    tcic_aux_setw(base, TCIC_AUX_TEST, 0);
    return id;
}

int tcic_probe_at(ioaddr_t base, int module)
{
    int i;
    u_short old;
    
    /* Anything there?? */
    for (i = 0; i < 0x10; i += 2)
	if (tcic_getw(base, i) == 0xffff)
	    return -1;

    if (!module)
	printf("  at %#3.3x: ", base); fflush(stdout);

    /* Try to reset the chip */
    tcic_setw(base, TCIC_SCTRL, TCIC_SCTRL_RESET);
    tcic_setw(base, TCIC_SCTRL, 0);
    
    /* Can we set the addr register? */
    old = tcic_getw(base, TCIC_ADDR);
    tcic_setw(base, TCIC_ADDR, 0);
    if (tcic_getw(base, TCIC_ADDR) != 0) {
	tcic_setw(base, TCIC_ADDR, old);
	return -2;
    }
    
    tcic_setw(base, TCIC_ADDR, 0xc3a5);
    if (tcic_getw(base, TCIC_ADDR) != 0xc3a5)
	return -3;

    return 2;
}

int tcic_probe(int verbose, int module, ioaddr_t base)
{
    int sock, id;

    if (!module)
	printf("Databook TCIC-2 probe: "); fflush(stdout);
    
    ioperm(base, 16, 1);
    ioperm(0x80, 1, 1);
    sock = tcic_probe_at(base, module);
    
    if (sock <= 0) {
	if (!module)
	    printf("not found.\n");
	return -ENODEV;
    }

    if (module)
	printf("tcic\n");
    else {
	id = get_tcic_id(base);
	switch (id) {
	case TCIC_ID_DB86082:
	    printf("DB86082"); break;
	case TCIC_ID_DB86082A:
	    printf("DB86082A"); break;
	case TCIC_ID_DB86084:
	    printf("DB86084"); break;
	case TCIC_ID_DB86084A:
	    printf("DB86084A"); break;
	case TCIC_ID_DB86072:
	    printf("DB86072"); break;
	case TCIC_ID_DB86184:
	    printf("DB86184"); break;
	case TCIC_ID_DB86082B:
	    printf("DB86082B"); break;
	default:
	    printf("Unknown TCIC-2 ID 0x%02x", id);
	}
	printf(" found at %#6x, %d sockets.\n", base, sock);
    }
    return 0;
    
} /* tcic_probe */

/*====================================================================*/

int probe_main(int argc, char *argv[])
{
    int optch, errflg;
    extern char *optarg;
    int verbose = 0, module = 0;
    ioaddr_t tcic_base = TCIC_BASE;
    
    errflg = 0;
    while ((optch = getopt(argc, argv, "t:vxm")) != -1) {
	switch (optch) {
	case 't':
	    tcic_base = strtoul(optarg, NULL, 0); break;
	case 'v':
	    verbose = 1; break;
	case 'm':
	    module = 1; break;
	default:
	    errflg = 1; break;
	}
    }
    if (errflg || (optind < argc)) {
	fprintf(stderr, "usage: %s [-t tcic_base] [-v] [-m]\n", argv[0]);
	exit(EXIT_FAILURE);
    }

#ifdef CONFIG_PCI
    if (pci_probe(verbose, module) == 0)
	exit(EXIT_SUCCESS);
    else
#endif
    if (i365_probe(verbose, module) == 0)
	exit(EXIT_SUCCESS);
    else if (tcic_probe(verbose, module, tcic_base) == 0)
	exit(EXIT_SUCCESS);
    else
	exit(EXIT_FAILURE);
    return 0;
}