/*
 *  linux/drivers/char/8250_pci.c
 *
 *  Probe module for 8250/16550-type PCI serial ports.
 *
 *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
 *
 *  Copyright (C) 2001 Russell King, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/8250_pci.h>
#include <linux/bitops.h>

#include <asm/byteorder.h>
#include <asm/io.h>

#include "8250.h"

#undef SERIAL_DEBUG_PCI

/*
 * init function returns:
 *  > 0 - number of ports
 *  = 0 - use board->num_ports
 *  < 0 - error
 */
struct pci_serial_quirk {
        u32     vendor;
        u32     device;
        u32     subvendor;
        u32     subdevice;
        int     (*init)(struct pci_dev *dev);
        int     (*setup)(struct serial_private *, struct pciserial_board *,
                         struct uart_port *, int);
        void    (*exit)(struct pci_dev *dev);
};

#define PCI_NUM_BAR_RESOURCES   6

struct serial_private {
        struct pci_dev          *dev;
        unsigned int            nr;
        void __iomem            *remapped_bar[PCI_NUM_BAR_RESOURCES];
        struct pci_serial_quirk *quirk;
        int                     line[0];
};

static void moan_device(const char *str, struct pci_dev *dev)
{
        printk(KERN_WARNING "%s: %s\n"
               KERN_WARNING "Please send the output of lspci -vv, this\n"
               KERN_WARNING "message (0x%04x,0x%04x,0x%04x,0x%04x), the\n"
               KERN_WARNING "manufacturer and name of serial board or\n"
               KERN_WARNING "modem board to rmk+serial@arm.linux.org.uk.\n",
               pci_name(dev), str, dev->vendor, dev->device,
               dev->subsystem_vendor, dev->subsystem_device);
}

static int
setup_port(struct serial_private *priv, struct uart_port *port,
           int bar, int offset, int regshift)
{
        struct pci_dev *dev = priv->dev;
        unsigned long base, len;

        if (bar >= PCI_NUM_BAR_RESOURCES)
                return -EINVAL;

        base = pci_resource_start(dev, bar);

        if (pci_resource_flags(dev, bar) & IORESOURCE_MEM) {
                len =  pci_resource_len(dev, bar);

                if (!priv->remapped_bar[bar])
                        priv->remapped_bar[bar] = ioremap_nocache(base, len);
                if (!priv->remapped_bar[bar])
                        return -ENOMEM;

                port->iotype = UPIO_MEM;
                port->iobase = 0;
                port->mapbase = base + offset;
                port->membase = priv->remapped_bar[bar] + offset;
                port->regshift = regshift;
        } else {
                port->iotype = UPIO_PORT;
                port->iobase = base + offset;
                port->mapbase = 0;
                port->membase = NULL;
                port->regshift = 0;
        }
        return 0;
}

/*
 * ADDI-DATA GmbH communication cards <info@addi-data.com>
 */
static int addidata_apci7800_setup(struct serial_private *priv,
                                struct pciserial_board *board,
                                struct uart_port *port, int idx)
{
        unsigned int bar = 0, offset = board->first_offset;
        bar = FL_GET_BASE(board->flags);

        if (idx < 2) {
                offset += idx * board->uart_offset;
        } else if ((idx >= 2) && (idx < 4)) {
                bar += 1;
                offset += ((idx - 2) * board->uart_offset);
        } else if ((idx >= 4) && (idx < 6)) {
                bar += 2;
                offset += ((idx - 4) * board->uart_offset);
        } else if (idx >= 6) {
                bar += 3;
                offset += ((idx - 6) * board->uart_offset);
        }

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/*
 * AFAVLAB uses a different mixture of BARs and offsets
 * Not that ugly ;) -- HW
 */
static int
afavlab_setup(struct serial_private *priv, struct pciserial_board *board,
              struct uart_port *port, int idx)
{
        unsigned int bar, offset = board->first_offset;

        bar = FL_GET_BASE(board->flags);
        if (idx < 4)
                bar += idx;
        else {
                bar = 4;
                offset += (idx - 4) * board->uart_offset;
        }

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/*
 * HP's Remote Management Console.  The Diva chip came in several
 * different versions.  N-class, L2000 and A500 have two Diva chips, each
 * with 3 UARTs (the third UART on the second chip is unused).  Superdome
 * and Keystone have one Diva chip with 3 UARTs.  Some later machines have
 * one Diva chip, but it has been expanded to 5 UARTs.
 */
static int pci_hp_diva_init(struct pci_dev *dev)
{
        int rc = 0;

        switch (dev->subsystem_device) {
        case PCI_DEVICE_ID_HP_DIVA_TOSCA1:
        case PCI_DEVICE_ID_HP_DIVA_HALFDOME:
        case PCI_DEVICE_ID_HP_DIVA_KEYSTONE:
        case PCI_DEVICE_ID_HP_DIVA_EVEREST:
                rc = 3;
                break;
        case PCI_DEVICE_ID_HP_DIVA_TOSCA2:
                rc = 2;
                break;
        case PCI_DEVICE_ID_HP_DIVA_MAESTRO:
                rc = 4;
                break;
        case PCI_DEVICE_ID_HP_DIVA_POWERBAR:
        case PCI_DEVICE_ID_HP_DIVA_HURRICANE:
                rc = 1;
                break;
        }

        return rc;
}

/*
 * HP's Diva chip puts the 4th/5th serial port further out, and
 * some serial ports are supposed to be hidden on certain models.
 */
static int
pci_hp_diva_setup(struct serial_private *priv, struct pciserial_board *board,
              struct uart_port *port, int idx)
{
        unsigned int offset = board->first_offset;
        unsigned int bar = FL_GET_BASE(board->flags);

        switch (priv->dev->subsystem_device) {
        case PCI_DEVICE_ID_HP_DIVA_MAESTRO:
                if (idx == 3)
                        idx++;
                break;
        case PCI_DEVICE_ID_HP_DIVA_EVEREST:
                if (idx > 0)
                        idx++;
                if (idx > 2)
                        idx++;
                break;
        }
        if (idx > 2)
                offset = 0x18;

        offset += idx * board->uart_offset;

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/*
 * Added for EKF Intel i960 serial boards
 */
static int pci_inteli960ni_init(struct pci_dev *dev)
{
        unsigned long oldval;

        if (!(dev->subsystem_device & 0x1000))
                return -ENODEV;

        /* is firmware started? */
        pci_read_config_dword(dev, 0x44, (void *)&oldval);
        if (oldval == 0x00001000L) { /* RESET value */
                printk(KERN_DEBUG "Local i960 firmware missing");
                return -ENODEV;
        }
        return 0;
}

/*
 * Some PCI serial cards using the PLX 9050 PCI interface chip require
 * that the card interrupt be explicitly enabled or disabled.  This
 * seems to be mainly needed on card using the PLX which also use I/O
 * mapped memory.
 */
static int pci_plx9050_init(struct pci_dev *dev)
{
        u8 irq_config;
        void __iomem *p;

        if ((pci_resource_flags(dev, 0) & IORESOURCE_MEM) == 0) {
                moan_device("no memory in bar 0", dev);
                return 0;
        }

        irq_config = 0x41;
        if (dev->vendor == PCI_VENDOR_ID_PANACOM ||
            dev->subsystem_vendor == PCI_SUBVENDOR_ID_EXSYS)
                irq_config = 0x43;

        if ((dev->vendor == PCI_VENDOR_ID_PLX) &&
            (dev->device == PCI_DEVICE_ID_PLX_ROMULUS))
                /*
                 * As the megawolf cards have the int pins active
                 * high, and have 2 UART chips, both ints must be
                 * enabled on the 9050. Also, the UARTS are set in
                 * 16450 mode by default, so we have to enable the
                 * 16C950 'enhanced' mode so that we can use the
                 * deep FIFOs
                 */
                irq_config = 0x5b;
        /*
         * enable/disable interrupts
         */
        p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
        if (p == NULL)
                return -ENOMEM;
        writel(irq_config, p + 0x4c);

        /*
         * Read the register back to ensure that it took effect.
         */
        readl(p + 0x4c);
        iounmap(p);

        return 0;
}

static void __devexit pci_plx9050_exit(struct pci_dev *dev)
{
        u8 __iomem *p;

        if ((pci_resource_flags(dev, 0) & IORESOURCE_MEM) == 0)
                return;

        /*
         * disable interrupts
         */
        p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
        if (p != NULL) {
                writel(0, p + 0x4c);

                /*
                 * Read the register back to ensure that it took effect.
                 */
                readl(p + 0x4c);
                iounmap(p);
        }
}

/* SBS Technologies Inc. PMC-OCTPRO and P-OCTAL cards */
static int
sbs_setup(struct serial_private *priv, struct pciserial_board *board,
                struct uart_port *port, int idx)
{
        unsigned int bar, offset = board->first_offset;

        bar = 0;

        if (idx < 4) {
                /* first four channels map to 0, 0x100, 0x200, 0x300 */
                offset += idx * board->uart_offset;
        } else if (idx < 8) {
                /* last four channels map to 0x1000, 0x1100, 0x1200, 0x1300 */
                offset += idx * board->uart_offset + 0xC00;
        } else /* we have only 8 ports on PMC-OCTALPRO */
                return 1;

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/*
* This does initialization for PMC OCTALPRO cards:
* maps the device memory, resets the UARTs (needed, bc
* if the module is removed and inserted again, the card
* is in the sleep mode) and enables global interrupt.
*/

/* global control register offset for SBS PMC-OctalPro */
#define OCT_REG_CR_OFF          0x500

static int sbs_init(struct pci_dev *dev)
{
        u8 __iomem *p;

        p = ioremap_nocache(pci_resource_start(dev, 0),
                                                pci_resource_len(dev, 0));

        if (p == NULL)
                return -ENOMEM;
        /* Set bit-4 Control Register (UART RESET) in to reset the uarts */
        writeb(0x10, p + OCT_REG_CR_OFF);
        udelay(50);
        writeb(0x0, p + OCT_REG_CR_OFF);

        /* Set bit-2 (INTENABLE) of Control Register */
        writeb(0x4, p + OCT_REG_CR_OFF);
        iounmap(p);

        return 0;
}

/*
 * Disables the global interrupt of PMC-OctalPro
 */

static void __devexit sbs_exit(struct pci_dev *dev)
{
        u8 __iomem *p;

        p = ioremap_nocache(pci_resource_start(dev, 0),
                                        pci_resource_len(dev, 0));
        /* FIXME: What if resource_len < OCT_REG_CR_OFF */
        if (p != NULL)
                writeb(0, p + OCT_REG_CR_OFF);
        iounmap(p);
}

/*
 * SIIG serial cards have an PCI interface chip which also controls
 * the UART clocking frequency. Each UART can be clocked independently
 * (except cards equiped with 4 UARTs) and initial clocking settings
 * are stored in the EEPROM chip. It can cause problems because this
 * version of serial driver doesn't support differently clocked UART's
 * on single PCI card. To prevent this, initialization functions set
 * high frequency clocking for all UART's on given card. It is safe (I
 * hope) because it doesn't touch EEPROM settings to prevent conflicts
 * with other OSes (like M$ DOS).
 *
 *  SIIG support added by Andrey Panin <pazke@donpac.ru>, 10/1999
 *
 * There is two family of SIIG serial cards with different PCI
 * interface chip and different configuration methods:
 *     - 10x cards have control registers in IO and/or memory space;
 *     - 20x cards have control registers in standard PCI configuration space.
 *
 * Note: all 10x cards have PCI device ids 0x10..
 *       all 20x cards have PCI device ids 0x20..
 *
 * There are also Quartet Serial cards which use Oxford Semiconductor
 * 16954 quad UART PCI chip clocked by 18.432 MHz quartz.
 *
 * Note: some SIIG cards are probed by the parport_serial object.
 */

#define PCI_DEVICE_ID_SIIG_1S_10x (PCI_DEVICE_ID_SIIG_1S_10x_550 & 0xfffc)
#define PCI_DEVICE_ID_SIIG_2S_10x (PCI_DEVICE_ID_SIIG_2S_10x_550 & 0xfff8)

static int pci_siig10x_init(struct pci_dev *dev)
{
        u16 data;
        void __iomem *p;

        switch (dev->device & 0xfff8) {
        case PCI_DEVICE_ID_SIIG_1S_10x: /* 1S */
                data = 0xffdf;
                break;
        case PCI_DEVICE_ID_SIIG_2S_10x: /* 2S, 2S1P */
                data = 0xf7ff;
                break;
        default:                        /* 1S1P, 4S */
                data = 0xfffb;
                break;
        }

        p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
        if (p == NULL)
                return -ENOMEM;

        writew(readw(p + 0x28) & data, p + 0x28);
        readw(p + 0x28);
        iounmap(p);
        return 0;
}

#define PCI_DEVICE_ID_SIIG_2S_20x (PCI_DEVICE_ID_SIIG_2S_20x_550 & 0xfffc)
#define PCI_DEVICE_ID_SIIG_2S1P_20x (PCI_DEVICE_ID_SIIG_2S1P_20x_550 & 0xfffc)

static int pci_siig20x_init(struct pci_dev *dev)
{
        u8 data;

        /* Change clock frequency for the first UART. */
        pci_read_config_byte(dev, 0x6f, &data);
        pci_write_config_byte(dev, 0x6f, data & 0xef);

        /* If this card has 2 UART, we have to do the same with second UART. */
        if (((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S_20x) ||
            ((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S1P_20x)) {
                pci_read_config_byte(dev, 0x73, &data);
                pci_write_config_byte(dev, 0x73, data & 0xef);
        }
        return 0;
}

static int pci_siig_init(struct pci_dev *dev)
{
        unsigned int type = dev->device & 0xff00;

        if (type == 0x1000)
                return pci_siig10x_init(dev);
        else if (type == 0x2000)
                return pci_siig20x_init(dev);

        moan_device("Unknown SIIG card", dev);
        return -ENODEV;
}

static int pci_siig_setup(struct serial_private *priv,
                          struct pciserial_board *board,
                          struct uart_port *port, int idx)
{
        unsigned int bar = FL_GET_BASE(board->flags) + idx, offset = 0;

        if (idx > 3) {
                bar = 4;
                offset = (idx - 4) * 8;
        }

        return setup_port(priv, port, bar, offset, 0);
}

/*
 * Timedia has an explosion of boards, and to avoid the PCI table from
 * growing *huge*, we use this function to collapse some 70 entries
 * in the PCI table into one, for sanity's and compactness's sake.
 */
static const unsigned short timedia_single_port[] = {
        0x4025, 0x4027, 0x4028, 0x5025, 0x5027, 0
};

static const unsigned short timedia_dual_port[] = {
        0x0002, 0x4036, 0x4037, 0x4038, 0x4078, 0x4079, 0x4085,
        0x4088, 0x4089, 0x5037, 0x5078, 0x5079, 0x5085, 0x6079,
        0x7079, 0x8079, 0x8137, 0x8138, 0x8237, 0x8238, 0x9079,
        0x9137, 0x9138, 0x9237, 0x9238, 0xA079, 0xB079, 0xC079,
        0xD079, 0
};

static const unsigned short timedia_quad_port[] = {
        0x4055, 0x4056, 0x4095, 0x4096, 0x5056, 0x8156, 0x8157,
        0x8256, 0x8257, 0x9056, 0x9156, 0x9157, 0x9158, 0x9159,
        0x9256, 0x9257, 0xA056, 0xA157, 0xA158, 0xA159, 0xB056,
        0xB157, 0
};

static const unsigned short timedia_eight_port[] = {
        0x4065, 0x4066, 0x5065, 0x5066, 0x8166, 0x9066, 0x9166,
        0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0
};

static const struct timedia_struct {
        int num;
        const unsigned short *ids;
} timedia_data[] = {
        { 1, timedia_single_port },
        { 2, timedia_dual_port },
        { 4, timedia_quad_port },
        { 8, timedia_eight_port }
};

static int pci_timedia_init(struct pci_dev *dev)
{
        const unsigned short *ids;
        int i, j;

        for (i = 0; i < ARRAY_SIZE(timedia_data); i++) {
                ids = timedia_data[i].ids;
                for (j = 0; ids[j]; j++)
                        if (dev->subsystem_device == ids[j])
                                return timedia_data[i].num;
        }
        return 0;
}

/*
 * Timedia/SUNIX uses a mixture of BARs and offsets
 * Ugh, this is ugly as all hell --- TYT
 */
static int
pci_timedia_setup(struct serial_private *priv, struct pciserial_board *board,
                  struct uart_port *port, int idx)
{
        unsigned int bar = 0, offset = board->first_offset;

        switch (idx) {
        case 0:
                bar = 0;
                break;
        case 1:
                offset = board->uart_offset;
                bar = 0;
                break;
        case 2:
                bar = 1;
                break;
        case 3:
                offset = board->uart_offset;
                /* FALLTHROUGH */
        case 4: /* BAR 2 */
        case 5: /* BAR 3 */
        case 6: /* BAR 4 */
        case 7: /* BAR 5 */
                bar = idx - 2;
        }

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/*
 * Some Titan cards are also a little weird
 */
static int
titan_400l_800l_setup(struct serial_private *priv,
                      struct pciserial_board *board,
                      struct uart_port *port, int idx)
{
        unsigned int bar, offset = board->first_offset;

        switch (idx) {
        case 0:
                bar = 1;
                break;
        case 1:
                bar = 2;
                break;
        default:
                bar = 4;
                offset = (idx - 2) * board->uart_offset;
        }

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

static int pci_xircom_init(struct pci_dev *dev)
{
        msleep(100);
        return 0;
}

static int pci_netmos_init(struct pci_dev *dev)
{
        /* subdevice 0x00PS means <P> parallel, <S> serial */
        unsigned int num_serial = dev->subsystem_device & 0xf;

        if (num_serial == 0)
                return -ENODEV;
        return num_serial;
}

/*
 * ITE support by Niels de Vos <niels.devos@wincor-nixdorf.com>
 *
 * These chips are available with optionally one parallel port and up to
 * two serial ports. Unfortunately they all have the same product id.
 *
 * Basic configuration is done over a region of 32 I/O ports. The base
 * ioport is called INTA or INTC, depending on docs/other drivers.
 *
 * The region of the 32 I/O ports is configured in POSIO0R...
 */

/* registers */
#define ITE_887x_MISCR          0x9c
#define ITE_887x_INTCBAR        0x78
#define ITE_887x_UARTBAR        0x7c
#define ITE_887x_PS0BAR         0x10
#define ITE_887x_POSIO0         0x60

/* I/O space size */
#define ITE_887x_IOSIZE         32
/* I/O space size (bits 26-24; 8 bytes = 011b) */
#define ITE_887x_POSIO_IOSIZE_8         (3 << 24)
/* I/O space size (bits 26-24; 32 bytes = 101b) */
#define ITE_887x_POSIO_IOSIZE_32        (5 << 24)
/* Decoding speed (1 = slow, 2 = medium, 3 = fast) */
#define ITE_887x_POSIO_SPEED            (3 << 29)
/* enable IO_Space bit */
#define ITE_887x_POSIO_ENABLE           (1 << 31)

static int pci_ite887x_init(struct pci_dev *dev)
{
        /* inta_addr are the configuration addresses of the ITE */
        static const short inta_addr[] = { 0x2a0, 0x2c0, 0x220, 0x240, 0x1e0,
                                                        0x200, 0x280, 0 };
        int ret, i, type;
        struct resource *iobase = NULL;
        u32 miscr, uartbar, ioport;

        /* search for the base-ioport */
        i = 0;
        while (inta_addr[i] && iobase == NULL) {
                iobase = request_region(inta_addr[i], ITE_887x_IOSIZE,
                                                                "ite887x");
                if (iobase != NULL) {
                        /* write POSIO0R - speed | size | ioport */
                        pci_write_config_dword(dev, ITE_887x_POSIO0,
                                ITE_887x_POSIO_ENABLE | ITE_887x_POSIO_SPEED |
                                ITE_887x_POSIO_IOSIZE_32 | inta_addr[i]);
                        /* write INTCBAR - ioport */
                        pci_write_config_dword(dev, ITE_887x_INTCBAR,
                                                                inta_addr[i]);
                        ret = inb(inta_addr[i]);
                        if (ret != 0xff) {
                                /* ioport connected */
                                break;
                        }
                        release_region(iobase->start, ITE_887x_IOSIZE);
                        iobase = NULL;
                }
                i++;
        }

        if (!inta_addr[i]) {
                printk(KERN_ERR "ite887x: could not find iobase\n");
                return -ENODEV;
        }

        /* start of undocumented type checking (see parport_pc.c) */
        type = inb(iobase->start + 0x18) & 0x0f;

        switch (type) {
        case 0x2:       /* ITE8871 (1P) */
        case 0xa:       /* ITE8875 (1P) */
                ret = 0;
                break;
        case 0xe:       /* ITE8872 (2S1P) */
                ret = 2;
                break;
        case 0x6:       /* ITE8873 (1S) */
                ret = 1;
                break;
        case 0x8:       /* ITE8874 (2S) */
                ret = 2;
                break;
        default:
                moan_device("Unknown ITE887x", dev);
                ret = -ENODEV;
        }

        /* configure all serial ports */
        for (i = 0; i < ret; i++) {
                /* read the I/O port from the device */
                pci_read_config_dword(dev, ITE_887x_PS0BAR + (0x4 * (i + 1)),
                                                                &ioport);
                ioport &= 0x0000FF00;   /* the actual base address */
                pci_write_config_dword(dev, ITE_887x_POSIO0 + (0x4 * (i + 1)),
                        ITE_887x_POSIO_ENABLE | ITE_887x_POSIO_SPEED |
                        ITE_887x_POSIO_IOSIZE_8 | ioport);

                /* write the ioport to the UARTBAR */
                pci_read_config_dword(dev, ITE_887x_UARTBAR, &uartbar);
                uartbar &= ~(0xffff << (16 * i));       /* clear half the reg */
                uartbar |= (ioport << (16 * i));        /* set the ioport */
                pci_write_config_dword(dev, ITE_887x_UARTBAR, uartbar);

                /* get current config */
                pci_read_config_dword(dev, ITE_887x_MISCR, &miscr);
                /* disable interrupts (UARTx_Routing[3:0]) */
                miscr &= ~(0xf << (12 - 4 * i));
                /* activate the UART (UARTx_En) */
                miscr |= 1 << (23 - i);
                /* write new config with activated UART */
                pci_write_config_dword(dev, ITE_887x_MISCR, miscr);
        }

        if (ret <= 0) {
                /* the device has no UARTs if we get here */
                release_region(iobase->start, ITE_887x_IOSIZE);
        }

        return ret;
}

static void __devexit pci_ite887x_exit(struct pci_dev *dev)
{
        u32 ioport;
        /* the ioport is bit 0-15 in POSIO0R */
        pci_read_config_dword(dev, ITE_887x_POSIO0, &ioport);
        ioport &= 0xffff;
        release_region(ioport, ITE_887x_IOSIZE);
}

static int
pci_default_setup(struct serial_private *priv, struct pciserial_board *board,
                  struct uart_port *port, int idx)
{
        unsigned int bar, offset = board->first_offset, maxnr;

        bar = FL_GET_BASE(board->flags);
        if (board->flags & FL_BASE_BARS)
                bar += idx;
        else
                offset += idx * board->uart_offset;

        maxnr = (pci_resource_len(priv->dev, bar) - board->first_offset) >>
                (board->reg_shift + 3);

        if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
                return 1;

        return setup_port(priv, port, bar, offset, board->reg_shift);
}

/* This should be in linux/pci_ids.h */
#define PCI_VENDOR_ID_SBSMODULARIO      0x124B
#define PCI_SUBVENDOR_ID_SBSMODULARIO   0x124B
#define PCI_DEVICE_ID_OCTPRO            0x0001
#define PCI_SUBDEVICE_ID_OCTPRO232      0x0108
#define PCI_SUBDEVICE_ID_OCTPRO422      0x0208
#define PCI_SUBDEVICE_ID_POCTAL232      0x0308
#define PCI_SUBDEVICE_ID_POCTAL422      0x0408

/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584

/*
 * Master list of serial port init/setup/exit quirks.
 * This does not describe the general nature of the port.
 * (ie, baud base, number and location of ports, etc)
 *
 * This list is ordered alphabetically by vendor then device.
 * Specific entries must come before more generic entries.
 */
static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
        /*
        * ADDI-DATA GmbH communication cards <info@addi-data.com>
        */
        {
                .vendor         = PCI_VENDOR_ID_ADDIDATA_OLD,
                .device         = PCI_DEVICE_ID_ADDIDATA_APCI7800,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = addidata_apci7800_setup,
        },
        /*
         * AFAVLAB cards - these may be called via parport_serial
         *  It is not clear whether this applies to all products.
         */
        {
                .vendor         = PCI_VENDOR_ID_AFAVLAB,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = afavlab_setup,
        },
        /*
         * HP Diva
         */
        {
                .vendor         = PCI_VENDOR_ID_HP,
                .device         = PCI_DEVICE_ID_HP_DIVA,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_hp_diva_init,
                .setup          = pci_hp_diva_setup,
        },
        /*
         * Intel
         */
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_80960_RP,
                .subvendor      = 0xe4bf,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_inteli960ni_init,
                .setup          = pci_default_setup,
        },
        /*
         * ITE
         */
        {
                .vendor         = PCI_VENDOR_ID_ITE,
                .device         = PCI_DEVICE_ID_ITE_8872,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ite887x_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_ite887x_exit),
        },
        /*
         * Panacom
         */
        {
                .vendor         = PCI_VENDOR_ID_PANACOM,
                .device         = PCI_DEVICE_ID_PANACOM_QUADMODEM,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        {
                .vendor         = PCI_VENDOR_ID_PANACOM,
                .device         = PCI_DEVICE_ID_PANACOM_DUALMODEM,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        /*
         * PLX
         */
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_9030,
                .subvendor      = PCI_SUBVENDOR_ID_PERLE,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_9050,
                .subvendor      = PCI_SUBVENDOR_ID_EXSYS,
                .subdevice      = PCI_SUBDEVICE_ID_EXSYS_4055,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_9050,
                .subvendor      = PCI_SUBVENDOR_ID_KEYSPAN,
                .subdevice      = PCI_SUBDEVICE_ID_KEYSPAN_SX2,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_9050,
                .subvendor      = PCI_VENDOR_ID_PLX,
                .subdevice      = PCI_SUBDEVICE_ID_UNKNOWN_0x1584,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_ROMULUS,
                .subvendor      = PCI_VENDOR_ID_PLX,
                .subdevice      = PCI_DEVICE_ID_PLX_ROMULUS,
                .init           = pci_plx9050_init,
                .setup          = pci_default_setup,
                .exit           = __devexit_p(pci_plx9050_exit),
        },
        /*
         * SBS Technologies, Inc., PMC-OCTALPRO 232
         */
        {
                .vendor         = PCI_VENDOR_ID_SBSMODULARIO,
                .device         = PCI_DEVICE_ID_OCTPRO,
                .subvendor      = PCI_SUBVENDOR_ID_SBSMODULARIO,
                .subdevice      = PCI_SUBDEVICE_ID_OCTPRO232,
                .init           = sbs_init,
                .setup          = sbs_setup,
                .exit           = __devexit_p(sbs_exit),
        },
        /*
         * SBS Technologies, Inc., PMC-OCTALPRO 422
         */
        {
                .vendor         = PCI_VENDOR_ID_SBSMODULARIO,
                .device         = PCI_DEVICE_ID_OCTPRO,
                .subvendor      = PCI_SUBVENDOR_ID_SBSMODULARIO,
                .subdevice      = PCI_SUBDEVICE_ID_OCTPRO422,
                .init           = sbs_init,
                .setup          = sbs_setup,
                .exit           = __devexit_p(sbs_exit),
        },
        /*
         * SBS Technologies, Inc., P-Octal 232
         */
        {
                .vendor         = PCI_VENDOR_ID_SBSMODULARIO,
                .device         = PCI_DEVICE_ID_OCTPRO,
                .subvendor      = PCI_SUBVENDOR_ID_SBSMODULARIO,
                .subdevice      = PCI_SUBDEVICE_ID_POCTAL232,
                .init           = sbs_init,
                .setup          = sbs_setup,
                .exit           = __devexit_p(sbs_exit),
        },
        /*
         * SBS Technologies, Inc., P-Octal 422
         */
        {
                .vendor         = PCI_VENDOR_ID_SBSMODULARIO,
                .device         = PCI_DEVICE_ID_OCTPRO,
                .subvendor      = PCI_SUBVENDOR_ID_SBSMODULARIO,
                .subdevice      = PCI_SUBDEVICE_ID_POCTAL422,
                .init           = sbs_init,
                .setup          = sbs_setup,
                .exit           = __devexit_p(sbs_exit),
        },
        /*
         * SIIG cards - these may be called via parport_serial
         */
        {
                .vendor         = PCI_VENDOR_ID_SIIG,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_siig_init,
                .setup          = pci_siig_setup,
        },
        /*
         * Titan cards
         */
        {
                .vendor         = PCI_VENDOR_ID_TITAN,
                .device         = PCI_DEVICE_ID_TITAN_400L,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = titan_400l_800l_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_TITAN,
                .device         = PCI_DEVICE_ID_TITAN_800L,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = titan_400l_800l_setup,
        },
        /*
         * Timedia cards
         */
        {
                .vendor         = PCI_VENDOR_ID_TIMEDIA,
                .device         = PCI_DEVICE_ID_TIMEDIA_1889,
                .subvendor      = PCI_VENDOR_ID_TIMEDIA,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_timedia_init,
                .setup          = pci_timedia_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_TIMEDIA,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_timedia_setup,
        },
        /*
         * Xircom cards
         */

        {
                .vendor         = PCI_VENDOR_ID_XIRCOM,
                .device         = PCI_DEVICE_ID_XIRCOM_X3201_MDM,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_xircom_init,
                .setup          = pci_default_setup,
        },
        /*
         * Netmos cards - these may be called via parport_serial
         */
        {
                .vendor         = PCI_VENDOR_ID_NETMOS,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_netmos_init,
                .setup          = pci_default_setup,
        },
        /*
         * Default "match everything" terminator entry
         */
        {
                .vendor         = PCI_ANY_ID,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_default_setup,
        }
};

static inline int quirk_id_matches(u32 quirk_id, u32 dev_id)
{
        return quirk_id == PCI_ANY_ID || quirk_id == dev_id;
}

static struct pci_serial_quirk *find_quirk(struct pci_dev *dev)
{
        struct pci_serial_quirk *quirk;

        for (quirk = pci_serial_quirks; ; quirk++)
                if (quirk_id_matches(quirk->vendor, dev->vendor) &&
                    quirk_id_matches(quirk->device, dev->device) &&
                    quirk_id_matches(quirk->subvendor, dev->subsystem_vendor) &&
                    quirk_id_matches(quirk->subdevice, dev->subsystem_device))
                        break;
        return quirk;
}

static inline int get_pci_irq(struct pci_dev *dev,
                                struct pciserial_board *board)
{
        if (board->flags & FL_NOIRQ)
                return 0;
        else
                return dev->irq;
}

/*
 * This is the configuration table for all of the PCI serial boards
 * which we support.  It is directly indexed by the pci_board_num_t enum
 * value, which is encoded in the pci_device_id PCI probe table's
 * driver_data member.
 *
 * The makeup of these names are:
 *  pbn_bn{_bt}_n_baud{_offsetinhex}
 *
 *  bn          = PCI BAR number
 *  bt          = Index using PCI BARs
 *  n           = number of serial ports
 *  baud        = baud rate
 *  offsetinhex = offset for each sequential port (in hex)
 *
 * This table is sorted by (in order): bn, bt, baud, offsetindex, n.
 *
 * Please note: in theory if n = 1, _bt infix should make no difference.
 * ie, pbn_b0_1_115200 is the same as pbn_b0_bt_1_115200
 */
enum pci_board_num_t {
        pbn_default = 0,

        pbn_b0_1_115200,
        pbn_b0_2_115200,
        pbn_b0_4_115200,
        pbn_b0_5_115200,
        pbn_b0_8_115200,

        pbn_b0_1_921600,
        pbn_b0_2_921600,
        pbn_b0_4_921600,

        pbn_b0_2_1130000,

        pbn_b0_4_1152000,

        pbn_b0_2_1843200,
        pbn_b0_4_1843200,

        pbn_b0_2_1843200_200,
        pbn_b0_4_1843200_200,
        pbn_b0_8_1843200_200,

        pbn_b0_1_4000000,

        pbn_b0_bt_1_115200,
        pbn_b0_bt_2_115200,
        pbn_b0_bt_8_115200,

        pbn_b0_bt_1_460800,
        pbn_b0_bt_2_460800,
        pbn_b0_bt_4_460800,

        pbn_b0_bt_1_921600,
        pbn_b0_bt_2_921600,
        pbn_b0_bt_4_921600,
        pbn_b0_bt_8_921600,

        pbn_b1_1_115200,
        pbn_b1_2_115200,
        pbn_b1_4_115200,
        pbn_b1_8_115200,

        pbn_b1_1_921600,
        pbn_b1_2_921600,
        pbn_b1_4_921600,
        pbn_b1_8_921600,

        pbn_b1_2_1250000,

        pbn_b1_bt_1_115200,
        pbn_b1_bt_2_921600,

        pbn_b1_1_1382400,
        pbn_b1_2_1382400,
        pbn_b1_4_1382400,
        pbn_b1_8_1382400,

        pbn_b2_1_115200,
        pbn_b2_2_115200,
        pbn_b2_4_115200,
        pbn_b2_8_115200,

        pbn_b2_1_460800,
        pbn_b2_4_460800,
        pbn_b2_8_460800,
        pbn_b2_16_460800,

        pbn_b2_1_921600,
        pbn_b2_4_921600,
        pbn_b2_8_921600,

        pbn_b2_bt_1_115200,
        pbn_b2_bt_2_115200,
        pbn_b2_bt_4_115200,

        pbn_b2_bt_2_921600,
        pbn_b2_bt_4_921600,

        pbn_b3_2_115200,
        pbn_b3_4_115200,
        pbn_b3_8_115200,

        /*
         * Board-specific versions.
         */
        pbn_panacom,
        pbn_panacom2,
        pbn_panacom4,
        pbn_exsys_4055,
        pbn_plx_romulus,
        pbn_oxsemi,
        pbn_oxsemi_1_4000000,
        pbn_oxsemi_2_4000000,
        pbn_oxsemi_4_4000000,
        pbn_oxsemi_8_4000000,
        pbn_intel_i960,
        pbn_sgi_ioc3,
        pbn_computone_4,
        pbn_computone_6,
        pbn_computone_8,
        pbn_sbsxrsio,
        pbn_exar_XR17C152,
        pbn_exar_XR17C154,
        pbn_exar_XR17C158,
        pbn_pasemi_1682M,
};

/*
 * uart_offset - the space between channels
 * reg_shift   - describes how the UART registers are mapped
 *               to PCI memory by the card.
 * For example IER register on SBS, Inc. PMC-OctPro is located at
 * offset 0x10 from the UART base, while UART_IER is defined as 1
 * in include/linux/serial_reg.h,
 * see first lines of serial_in() and serial_out() in 8250.c
*/

static struct pciserial_board pci_boards[] __devinitdata = {
        [pbn_default] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_1_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_2_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_4_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_5_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 5,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_8_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_1_921600] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b0_2_921600] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b0_4_921600] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },

        [pbn_b0_2_1130000] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 1130000,
                .uart_offset    = 8,
        },

        [pbn_b0_4_1152000] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 1152000,
                .uart_offset    = 8,
        },

        [pbn_b0_2_1843200] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 1843200,
                .uart_offset    = 8,
        },
        [pbn_b0_4_1843200] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 1843200,
                .uart_offset    = 8,
        },

        [pbn_b0_2_1843200_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 1843200,
                .uart_offset    = 0x200,
        },
        [pbn_b0_4_1843200_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 1843200,
                .uart_offset    = 0x200,
        },
        [pbn_b0_8_1843200_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 1843200,
                .uart_offset    = 0x200,
        },
        [pbn_b0_1_4000000] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 4000000,
                .uart_offset    = 8,
        },

        [pbn_b0_bt_1_115200] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_2_115200] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_8_115200] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        [pbn_b0_bt_1_460800] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 1,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_2_460800] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_4_460800] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 4,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },

        [pbn_b0_bt_1_921600] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 1,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_2_921600] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_4_921600] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b0_bt_8_921600] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 8,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },

        [pbn_b1_1_115200] = {
                .flags          = FL_BASE1,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b1_2_115200] = {
                .flags          = FL_BASE1,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b1_4_115200] = {
                .flags          = FL_BASE1,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b1_8_115200] = {
                .flags          = FL_BASE1,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        [pbn_b1_1_921600] = {
                .flags          = FL_BASE1,
                .num_ports      = 1,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b1_2_921600] = {
                .flags          = FL_BASE1,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b1_4_921600] = {
                .flags          = FL_BASE1,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b1_8_921600] = {
                .flags          = FL_BASE1,
                .num_ports      = 8,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b1_2_1250000] = {
                .flags          = FL_BASE1,
                .num_ports      = 2,
                .base_baud      = 1250000,
                .uart_offset    = 8,
        },

        [pbn_b1_bt_1_115200] = {
                .flags          = FL_BASE1|FL_BASE_BARS,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        [pbn_b1_bt_2_921600] = {
                .flags          = FL_BASE1|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },

        [pbn_b1_1_1382400] = {
                .flags          = FL_BASE1,
                .num_ports      = 1,
                .base_baud      = 1382400,
                .uart_offset    = 8,
        },
        [pbn_b1_2_1382400] = {
                .flags          = FL_BASE1,
                .num_ports      = 2,
                .base_baud      = 1382400,
                .uart_offset    = 8,
        },
        [pbn_b1_4_1382400] = {
                .flags          = FL_BASE1,
                .num_ports      = 4,
                .base_baud      = 1382400,
                .uart_offset    = 8,
        },
        [pbn_b1_8_1382400] = {
                .flags          = FL_BASE1,
                .num_ports      = 8,
                .base_baud      = 1382400,
                .uart_offset    = 8,
        },

        [pbn_b2_1_115200] = {
                .flags          = FL_BASE2,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b2_2_115200] = {
                .flags          = FL_BASE2,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b2_4_115200] = {
                .flags          = FL_BASE2,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b2_8_115200] = {
                .flags          = FL_BASE2,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        [pbn_b2_1_460800] = {
                .flags          = FL_BASE2,
                .num_ports      = 1,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },
        [pbn_b2_4_460800] = {
                .flags          = FL_BASE2,
                .num_ports      = 4,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },
        [pbn_b2_8_460800] = {
                .flags          = FL_BASE2,
                .num_ports      = 8,
                .base_baud      = 460800,
                .uart_offset    = 8,
        },
        [pbn_b2_16_460800] = {
                .flags          = FL_BASE2,
                .num_ports      = 16,
                .base_baud      = 460800,
                .uart_offset    = 8,
         },

        [pbn_b2_1_921600] = {
                .flags          = FL_BASE2,
                .num_ports      = 1,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b2_4_921600] = {
                .flags          = FL_BASE2,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b2_8_921600] = {
                .flags          = FL_BASE2,
                .num_ports      = 8,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },

        [pbn_b2_bt_1_115200] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 1,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b2_bt_2_115200] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b2_bt_4_115200] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        [pbn_b2_bt_2_921600] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b2_bt_4_921600] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },

        [pbn_b3_2_115200] = {
                .flags          = FL_BASE3,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b3_4_115200] = {
                .flags          = FL_BASE3,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_b3_8_115200] = {
                .flags          = FL_BASE3,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        /*
         * Entries following this are board-specific.
         */

        /*
         * Panacom - IOMEM
         */
        [pbn_panacom] = {
                .flags          = FL_BASE2,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 0x400,
                .reg_shift      = 7,
        },
        [pbn_panacom2] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 0x400,
                .reg_shift      = 7,
        },
        [pbn_panacom4] = {
                .flags          = FL_BASE2|FL_BASE_BARS,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 0x400,
                .reg_shift      = 7,
        },

        [pbn_exsys_4055] = {
                .flags          = FL_BASE2,
                .num_ports      = 4,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },

        /* I think this entry is broken - the first_offset looks wrong --rmk */
        [pbn_plx_romulus] = {
                .flags          = FL_BASE2,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8 << 2,
                .reg_shift      = 2,
                .first_offset   = 0x03,
        },

        /*
         * This board uses the size of PCI Base region 0 to
         * signal now many ports are available
         */
        [pbn_oxsemi] = {
                .flags          = FL_BASE0|FL_REGION_SZ_CAP,
                .num_ports      = 32,
                .base_baud      = 115200,
                .uart_offset    = 8,
        },
        [pbn_oxsemi_1_4000000] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 4000000,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_oxsemi_2_4000000] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 4000000,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_oxsemi_4_4000000] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 4000000,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_oxsemi_8_4000000] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 4000000,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },


        /*
         * EKF addition for i960 Boards form EKF with serial port.
         * Max 256 ports.
         */
        [pbn_intel_i960] = {
                .flags          = FL_BASE0,
                .num_ports      = 32,
                .base_baud      = 921600,
                .uart_offset    = 8 << 2,
                .reg_shift      = 2,
                .first_offset   = 0x10000,
        },
        [pbn_sgi_ioc3] = {
                .flags          = FL_BASE0|FL_NOIRQ,
                .num_ports      = 1,
                .base_baud      = 458333,
                .uart_offset    = 8,
                .reg_shift      = 0,
                .first_offset   = 0x20178,
        },

        /*
         * Computone - uses IOMEM.
         */
        [pbn_computone_4] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 0x40,
                .reg_shift      = 2,
                .first_offset   = 0x200,
        },
        [pbn_computone_6] = {
                .flags          = FL_BASE0,
                .num_ports      = 6,
                .base_baud      = 921600,
                .uart_offset    = 0x40,
                .reg_shift      = 2,
                .first_offset   = 0x200,
        },
        [pbn_computone_8] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 921600,
                .uart_offset    = 0x40,
                .reg_shift      = 2,
                .first_offset   = 0x200,
        },
        [pbn_sbsxrsio] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 460800,
                .uart_offset    = 256,
                .reg_shift      = 4,
        },
        /*
         * Exar Corp. XR17C15[248] Dual/Quad/Octal UART
         *  Only basic 16550A support.
         *  XR17C15[24] are not tested, but they should work.
         */
        [pbn_exar_XR17C152] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 0x200,
        },
        [pbn_exar_XR17C154] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 0x200,
        },
        [pbn_exar_XR17C158] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 921600,
                .uart_offset    = 0x200,
        },
        /*
         * PA Semi PWRficient PA6T-1682M on-chip UART
         */
        [pbn_pasemi_1682M] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 8333333,
        },
};

static const struct pci_device_id softmodem_blacklist[] = {
        { PCI_VDEVICE(AL, 0x5457), }, /* ALi Corporation M5457 AC'97 Modem */
};

/*
 * Given a complete unknown PCI device, try to use some heuristics to
 * guess what the configuration might be, based on the pitiful PCI
 * serial specs.  Returns 0 on success, 1 on failure.
 */
static int __devinit
serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
{
        const struct pci_device_id *blacklist;
        int num_iomem, num_port, first_port = -1, i;

        /*
         * If it is not a communications device or the programming
         * interface is greater than 6, give up.
         *
         * (Should we try to make guesses for multiport serial devices
         * later?)
         */
        if ((((dev->class >> 8) != PCI_CLASS_COMMUNICATION_SERIAL) &&
             ((dev->class >> 8) != PCI_CLASS_COMMUNICATION_MODEM)) ||
            (dev->class & 0xff) > 6)
                return -ENODEV;

        /*
         * Do not access blacklisted devices that are known not to
         * feature serial ports.
         */
        for (blacklist = softmodem_blacklist;
             blacklist < softmodem_blacklist + ARRAY_SIZE(softmodem_blacklist);
             blacklist++) {
                if (dev->vendor == blacklist->vendor &&
                    dev->device == blacklist->device)
                        return -ENODEV;
        }

        num_iomem = num_port = 0;
        for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
                if (pci_resource_flags(dev, i) & IORESOURCE_IO) {
                        num_port++;
                        if (first_port == -1)
                                first_port = i;
                }
                if (pci_resource_flags(dev, i) & IORESOURCE_MEM)
                        num_iomem++;
        }

        /*
         * If there is 1 or 0 iomem regions, and exactly one port,
         * use it.  We guess the number of ports based on the IO
         * region size.
         */
        if (num_iomem <= 1 && num_port == 1) {
                board->flags = first_port;
                board->num_ports = pci_resource_len(dev, first_port) / 8;
                return 0;
        }

        /*
         * Now guess if we've got a board which indexes by BARs.
         * Each IO BAR should be 8 bytes, and they should follow
         * consecutively.
         */
        first_port = -1;
        num_port = 0;
        for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
                if (pci_resource_flags(dev, i) & IORESOURCE_IO &&
                    pci_resource_len(dev, i) == 8 &&
                    (first_port == -1 || (first_port + num_port) == i)) {
                        num_port++;
                        if (first_port == -1)
                                first_port = i;
                }
        }

        if (num_port > 1) {
                board->flags = first_port | FL_BASE_BARS;
                board->num_ports = num_port;
                return 0;
        }

        return -ENODEV;
}

static inline int
serial_pci_matches(struct pciserial_board *board,
                   struct pciserial_board *guessed)
{
        return
            board->num_ports == guessed->num_ports &&
            board->base_baud == guessed->base_baud &&
            board->uart_offset == guessed->uart_offset &&
            board->reg_shift == guessed->reg_shift &&
            board->first_offset == guessed->first_offset;
}

/*
 * Oxford Semiconductor Inc.
 * Check that device is part of the Tornado range of devices, then determine
 * the number of ports available on the device.
 */
static int pci_oxsemi_tornado_init(struct pci_dev *dev, struct pciserial_board *board)
{
        u8 __iomem *p;
        unsigned long deviceID;
        unsigned int  number_uarts;

        /* OxSemi Tornado devices are all 0xCxxx */
        if (dev->vendor == PCI_VENDOR_ID_OXSEMI &&
            (dev->device & 0xF000) != 0xC000)
                return 0;

        p = pci_iomap(dev, 0, 5);
        if (p == NULL)
                return -ENOMEM;

        deviceID = ioread32(p);
        /* Tornado device */
        if (deviceID == 0x07000200) {
                number_uarts = ioread8(p + 4);
                board->num_ports = number_uarts;
                printk(KERN_DEBUG
                        "%d ports detected on Oxford PCI Express device\n",
                                                                number_uarts);
        }
        pci_iounmap(dev, p);
        return 0;
}

struct serial_private *
pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board)
{
        struct uart_port serial_port;
        struct serial_private *priv;
        struct pci_serial_quirk *quirk;
        int rc, nr_ports, i;

        /*
         * Find number of ports on board
         */
        if (dev->vendor == PCI_VENDOR_ID_OXSEMI ||
            dev->vendor == PCI_VENDOR_ID_MAINPINE)
                pci_oxsemi_tornado_init(dev, board);

        nr_ports = board->num_ports;

        /*
         * Find an init and setup quirks.
         */
        quirk = find_quirk(dev);

        /*
         * Run the new-style initialization function.
         * The initialization function returns:
         *  <0  - error
         *   0  - use board->num_ports
         *  >0  - number of ports
         */
        if (quirk->init) {
                rc = quirk->init(dev);
                if (rc < 0) {
                        priv = ERR_PTR(rc);
                        goto err_out;
                }
                if (rc)
                        nr_ports = rc;
        }

        priv = kzalloc(sizeof(struct serial_private) +
                       sizeof(unsigned int) * nr_ports,
                       GFP_KERNEL);
        if (!priv) {
                priv = ERR_PTR(-ENOMEM);
                goto err_deinit;
        }

        priv->dev = dev;
        priv->quirk = quirk;

        memset(&serial_port, 0, sizeof(struct uart_port));
        serial_port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
        serial_port.uartclk = board->base_baud * 16;
        serial_port.irq = get_pci_irq(dev, board);
        serial_port.dev = &dev->dev;

        for (i = 0; i < nr_ports; i++) {
                if (quirk->setup(priv, board, &serial_port, i))
                        break;

#ifdef SERIAL_DEBUG_PCI
                printk(KERN_DEBUG "Setup PCI port: port %x, irq %d, type %d\n",
                       serial_port.iobase, serial_port.irq, serial_port.iotype);
#endif

                priv->line[i] = serial8250_register_port(&serial_port);
                if (priv->line[i] < 0) {
                        printk(KERN_WARNING "Couldn't register serial port %s: %d\n", pci_name(dev), priv->line[i]);
                        break;
                }
        }
        priv->nr = i;
        return priv;

err_deinit:
        if (quirk->exit)
                quirk->exit(dev);
err_out:
        return priv;
}
EXPORT_SYMBOL_GPL(pciserial_init_ports);

void pciserial_remove_ports(struct serial_private *priv)
{
        struct pci_serial_quirk *quirk;
        int i;

        for (i = 0; i < priv->nr; i++)
                serial8250_unregister_port(priv->line[i]);

        for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
                if (priv->remapped_bar[i])
                        iounmap(priv->remapped_bar[i]);
                priv->remapped_bar[i] = NULL;
        }

        /*
         * Find the exit quirks.
         */
        quirk = find_quirk(priv->dev);
        if (quirk->exit)
                quirk->exit(priv->dev);

        kfree(priv);
}
EXPORT_SYMBOL_GPL(pciserial_remove_ports);

void pciserial_suspend_ports(struct serial_private *priv)
{
        int i;