/*
 *  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.
 */
#undef DEBUG
#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_reg.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"

/*
 * 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     (*probe)(struct pci_dev *dev);
        int     (*init)(struct pci_dev *dev);
        int     (*setup)(struct serial_private *,
                         const struct pciserial_board *,
                         struct uart_8250_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 int pci_default_setup(struct serial_private*,
          const struct pciserial_board*, struct uart_8250_port *, int);

static void moan_device(const char *str, struct pci_dev *dev)
{
        dev_err(&dev->dev,
               "%s: %s\n"
               "Please send the output of lspci -vv, this\n"
               "message (0x%04x,0x%04x,0x%04x,0x%04x), the\n"
               "manufacturer and name of serial board or\n"
               "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_8250_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->port.iotype = UPIO_MEM;
                port->port.iobase = 0;
                port->port.mapbase = base + offset;
                port->port.membase = priv->remapped_bar[bar] + offset;
                port->port.regshift = regshift;
        } else {
                port->port.iotype = UPIO_PORT;
                port->port.iobase = base + offset;
                port->port.mapbase = 0;
                port->port.membase = NULL;
                port->port.regshift = 0;
        }
        return 0;
}

/*
 * ADDI-DATA GmbH communication cards <info@addi-data.com>
 */
static int addidata_apci7800_setup(struct serial_private *priv,
                                const struct pciserial_board *board,
                                struct uart_8250_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, const struct pciserial_board *board,
              struct uart_8250_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,
                const struct pciserial_board *board,
                struct uart_8250_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 */
                dev_dbg(&dev->dev, "Local i960 firmware missing\n");
                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 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);
        }
}

#define NI8420_INT_ENABLE_REG   0x38
#define NI8420_INT_ENABLE_BIT   0x2000

static void pci_ni8420_exit(struct pci_dev *dev)
{
        void __iomem *p;
        unsigned long base, len;
        unsigned int bar = 0;

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

        base = pci_resource_start(dev, bar);
        len =  pci_resource_len(dev, bar);
        p = ioremap_nocache(base, len);
        if (p == NULL)
                return;

        /* Disable the CPU Interrupt */
        writel(readl(p + NI8420_INT_ENABLE_REG) & ~(NI8420_INT_ENABLE_BIT),
               p + NI8420_INT_ENABLE_REG);
        iounmap(p);
}


/* MITE registers */
#define MITE_IOWBSR1    0xc4
#define MITE_IOWCR1     0xf4
#define MITE_LCIMR1     0x08
#define MITE_LCIMR2     0x10

#define MITE_LCIMR2_CLR_CPU_IE  (1 << 30)

static void pci_ni8430_exit(struct pci_dev *dev)
{
        void __iomem *p;
        unsigned long base, len;
        unsigned int bar = 0;

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

        base = pci_resource_start(dev, bar);
        len =  pci_resource_len(dev, bar);
        p = ioremap_nocache(base, len);
        if (p == NULL)
                return;

        /* Disable the CPU Interrupt */
        writel(MITE_LCIMR2_CLR_CPU_IE, p + MITE_LCIMR2);
        iounmap(p);
}

/* SBS Technologies Inc. PMC-OCTPRO and P-OCTAL cards */
static int
sbs_setup(struct serial_private *priv, const struct pciserial_board *board,
                struct uart_8250_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 = pci_ioremap_bar(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 sbs_exit(struct pci_dev *dev)
{
        u8 __iomem *p;

        p = pci_ioremap_bar(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 equipped 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,
                          const struct pciserial_board *board,
                          struct uart_8250_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 }
};

/*
 * There are nearly 70 different Timedia/SUNIX PCI serial devices.  Instead of
 * listing them individually, this driver merely grabs them all with
 * PCI_ANY_ID.  Some of these devices, however, also feature a parallel port,
 * and should be left free to be claimed by parport_serial instead.
 */
static int pci_timedia_probe(struct pci_dev *dev)
{
        /*
         * Check the third digit of the subdevice ID
         * (0,2,3,5,6: serial only -- 7,8,9: serial + parallel)
         */
        if ((dev->subsystem_device & 0x00f0) >= 0x70) {
                dev_info(&dev->dev,
                        "ignoring Timedia subdevice %04x for parport_serial\n",
                        dev->subsystem_device);
                return -ENODEV;
        }

        return 0;
}

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,
                  const struct pciserial_board *board,
                  struct uart_8250_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,
                      const struct pciserial_board *board,
                      struct uart_8250_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_ni8420_init(struct pci_dev *dev)
{
        void __iomem *p;
        unsigned long base, len;
        unsigned int bar = 0;

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

        base = pci_resource_start(dev, bar);
        len =  pci_resource_len(dev, bar);
        p = ioremap_nocache(base, len);
        if (p == NULL)
                return -ENOMEM;

        /* Enable CPU Interrupt */
        writel(readl(p + NI8420_INT_ENABLE_REG) | NI8420_INT_ENABLE_BIT,
               p + NI8420_INT_ENABLE_REG);

        iounmap(p);
        return 0;
}

#define MITE_IOWBSR1_WSIZE      0xa
#define MITE_IOWBSR1_WIN_OFFSET 0x800
#define MITE_IOWBSR1_WENAB      (1 << 7)
#define MITE_LCIMR1_IO_IE_0     (1 << 24)
#define MITE_LCIMR2_SET_CPU_IE  (1 << 31)
#define MITE_IOWCR1_RAMSEL_MASK 0xfffffffe

static int pci_ni8430_init(struct pci_dev *dev)
{
        void __iomem *p;
        unsigned long base, len;
        u32 device_window;
        unsigned int bar = 0;

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

        base = pci_resource_start(dev, bar);
        len =  pci_resource_len(dev, bar);
        p = ioremap_nocache(base, len);
        if (p == NULL)
                return -ENOMEM;

        /* Set device window address and size in BAR0 */
        device_window = ((base + MITE_IOWBSR1_WIN_OFFSET) & 0xffffff00)
                        | MITE_IOWBSR1_WENAB | MITE_IOWBSR1_WSIZE;
        writel(device_window, p + MITE_IOWBSR1);

        /* Set window access to go to RAMSEL IO address space */
        writel((readl(p + MITE_IOWCR1) & MITE_IOWCR1_RAMSEL_MASK),
               p + MITE_IOWCR1);

        /* Enable IO Bus Interrupt 0 */
        writel(MITE_LCIMR1_IO_IE_0, p + MITE_LCIMR1);

        /* Enable CPU Interrupt */
        writel(MITE_LCIMR2_SET_CPU_IE, p + MITE_LCIMR2);

        iounmap(p);
        return 0;
}

/* UART Port Control Register */
#define NI8430_PORTCON  0x0f
#define NI8430_PORTCON_TXVR_ENABLE      (1 << 3)

static int
pci_ni8430_setup(struct serial_private *priv,
                 const struct pciserial_board *board,
                 struct uart_8250_port *port, int idx)
{
        void __iomem *p;
        unsigned long base, len;
        unsigned int bar, offset = board->first_offset;

        if (idx >= board->num_ports)
                return 1;

        bar = FL_GET_BASE(board->flags);
        offset += idx * board->uart_offset;

        base = pci_resource_start(priv->dev, bar);
        len =  pci_resource_len(priv->dev, bar);
        p = ioremap_nocache(base, len);

        /* enable the transceiver */
        writeb(readb(p + offset + NI8430_PORTCON) | NI8430_PORTCON_TXVR_ENABLE,
               p + offset + NI8430_PORTCON);

        iounmap(p);

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

static int pci_netmos_9900_setup(struct serial_private *priv,
                                const struct pciserial_board *board,
                                struct uart_8250_port *port, int idx)
{
        unsigned int bar;

        if ((priv->dev->subsystem_device & 0xff00) == 0x3000) {
                /* netmos apparently orders BARs by datasheet layout, so serial
                 * ports get BARs 0 and 3 (or 1 and 4 for memmapped)
                 */
                bar = 3 * idx;

                return setup_port(priv, port, bar, 0, board->reg_shift);
        } else {
                return pci_default_setup(priv, board, port, idx);
        }
}

/* the 99xx series comes with a range of device IDs and a variety
 * of capabilities:
 *
 * 9900 has varying capabilities and can cascade to sub-controllers
 *   (cascading should be purely internal)
 * 9904 is hardwired with 4 serial ports
 * 9912 and 9922 are hardwired with 2 serial ports
 */
static int pci_netmos_9900_numports(struct pci_dev *dev)
{
        unsigned int c = dev->class;
        unsigned int pi;
        unsigned short sub_serports;

        pi = (c & 0xff);

        if (pi == 2) {
                return 1;
        } else if ((pi == 0) &&
                           (dev->device == PCI_DEVICE_ID_NETMOS_9900)) {
                /* two possibilities: 0x30ps encodes number of parallel and
                 * serial ports, or 0x1000 indicates *something*. This is not
                 * immediately obvious, since the 2s1p+4s configuration seems
                 * to offer all functionality on functions 0..2, while still
                 * advertising the same function 3 as the 4s+2s1p config.
                 */
                sub_serports = dev->subsystem_device & 0xf;
                if (sub_serports > 0) {
                        return sub_serports;
                } else {
                        dev_err(&dev->dev, "NetMos/Mostech serial driver ignoring port on ambiguous config.\n");
                        return 0;
                }
        }

        moan_device("unknown NetMos/Mostech program interface", dev);
        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 ((dev->device == PCI_DEVICE_ID_NETMOS_9901) ||
                (dev->device == PCI_DEVICE_ID_NETMOS_9865))
                return 0;

        if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
                        dev->subsystem_device == 0x0299)
                return 0;

        switch (dev->device) { /* FALLTHROUGH on all */
                case PCI_DEVICE_ID_NETMOS_9904:
                case PCI_DEVICE_ID_NETMOS_9912:
                case PCI_DEVICE_ID_NETMOS_9922:
                case PCI_DEVICE_ID_NETMOS_9900:
                        num_serial = pci_netmos_9900_numports(dev);
                        break;

                default:
                        if (num_serial == 0 ) {
                                moan_device("unknown NetMos/Mostech device", dev);
                        }
        }

        if (num_serial == 0)
                return -ENODEV;

        return num_serial;
}

/*
 * 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]) {
                dev_err(&dev->dev, "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 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);
}

/*
 * 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)
{
        u8 __iomem *p;
        unsigned long deviceID;
        unsigned int  number_uarts = 0;

        /* 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);
                dev_dbg(&dev->dev,
                        "%d ports detected on Oxford PCI Express device\n",
                        number_uarts);
        }
        pci_iounmap(dev, p);
        return number_uarts;
}

static int pci_asix_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        port->bugs |= UART_BUG_PARITY;
        return pci_default_setup(priv, board, port, idx);
}

/* Quatech devices have their own extra interface features */

struct quatech_feature {
        u16 devid;
        bool amcc;
};

#define QPCR_TEST_FOR1          0x3F
#define QPCR_TEST_GET1          0x00
#define QPCR_TEST_FOR2          0x40
#define QPCR_TEST_GET2          0x40
#define QPCR_TEST_FOR3          0x80
#define QPCR_TEST_GET3          0x40
#define QPCR_TEST_FOR4          0xC0
#define QPCR_TEST_GET4          0x80

#define QOPR_CLOCK_X1           0x0000
#define QOPR_CLOCK_X2           0x0001
#define QOPR_CLOCK_X4           0x0002
#define QOPR_CLOCK_X8           0x0003
#define QOPR_CLOCK_RATE_MASK    0x0003


static struct quatech_feature quatech_cards[] = {
        { PCI_DEVICE_ID_QUATECH_QSC100,   1 },
        { PCI_DEVICE_ID_QUATECH_DSC100,   1 },
        { PCI_DEVICE_ID_QUATECH_DSC100E,  0 },
        { PCI_DEVICE_ID_QUATECH_DSC200,   1 },
        { PCI_DEVICE_ID_QUATECH_DSC200E,  0 },
        { PCI_DEVICE_ID_QUATECH_ESC100D,  1 },
        { PCI_DEVICE_ID_QUATECH_ESC100M,  1 },
        { PCI_DEVICE_ID_QUATECH_QSCP100,  1 },
        { PCI_DEVICE_ID_QUATECH_DSCP100,  1 },
        { PCI_DEVICE_ID_QUATECH_QSCP200,  1 },
        { PCI_DEVICE_ID_QUATECH_DSCP200,  1 },
        { PCI_DEVICE_ID_QUATECH_ESCLP100, 0 },
        { PCI_DEVICE_ID_QUATECH_QSCLP100, 0 },
        { PCI_DEVICE_ID_QUATECH_DSCLP100, 0 },
        { PCI_DEVICE_ID_QUATECH_SSCLP100, 0 },
        { PCI_DEVICE_ID_QUATECH_QSCLP200, 0 },
        { PCI_DEVICE_ID_QUATECH_DSCLP200, 0 },
        { PCI_DEVICE_ID_QUATECH_SSCLP200, 0 },
        { PCI_DEVICE_ID_QUATECH_SPPXP_100, 0 },
        { 0, }
};

static int pci_quatech_amcc(u16 devid)
{
        struct quatech_feature *qf = &quatech_cards[0];
        while (qf->devid) {
                if (qf->devid == devid)
                        return qf->amcc;
                qf++;
        }
        pr_err("quatech: unknown port type '0x%04X'.\n", devid);
        return 0;
};

static int pci_quatech_rqopr(struct uart_8250_port *port)
{
        unsigned long base = port->port.iobase;
        u8 LCR, val;

        LCR = inb(base + UART_LCR);
        outb(0xBF, base + UART_LCR);
        val = inb(base + UART_SCR);
        outb(LCR, base + UART_LCR);
        return val;
}

static void pci_quatech_wqopr(struct uart_8250_port *port, u8 qopr)
{
        unsigned long base = port->port.iobase;
        u8 LCR, val;

        LCR = inb(base + UART_LCR);
        outb(0xBF, base + UART_LCR);
        val = inb(base + UART_SCR);
        outb(qopr, base + UART_SCR);
        outb(LCR, base + UART_LCR);
}

static int pci_quatech_rqmcr(struct uart_8250_port *port)
{
        unsigned long base = port->port.iobase;
        u8 LCR, val, qmcr;

        LCR = inb(base + UART_LCR);
        outb(0xBF, base + UART_LCR);
        val = inb(base + UART_SCR);
        outb(val | 0x10, base + UART_SCR);
        qmcr = inb(base + UART_MCR);
        outb(val, base + UART_SCR);
        outb(LCR, base + UART_LCR);

        return qmcr;
}

static void pci_quatech_wqmcr(struct uart_8250_port *port, u8 qmcr)
{
        unsigned long base = port->port.iobase;
        u8 LCR, val;

        LCR = inb(base + UART_LCR);
        outb(0xBF, base + UART_LCR);
        val = inb(base + UART_SCR);
        outb(val | 0x10, base + UART_SCR);
        outb(qmcr, base + UART_MCR);
        outb(val, base + UART_SCR);
        outb(LCR, base + UART_LCR);
}

static int pci_quatech_has_qmcr(struct uart_8250_port *port)
{
        unsigned long base = port->port.iobase;
        u8 LCR, val;

        LCR = inb(base + UART_LCR);
        outb(0xBF, base + UART_LCR);
        val = inb(base + UART_SCR);
        if (val & 0x20) {
                outb(0x80, UART_LCR);
                if (!(inb(UART_SCR) & 0x20)) {
                        outb(LCR, base + UART_LCR);
                        return 1;
                }
        }
        return 0;
}

static int pci_quatech_test(struct uart_8250_port *port)
{
        u8 reg;
        u8 qopr = pci_quatech_rqopr(port);
        pci_quatech_wqopr(port, qopr & QPCR_TEST_FOR1);
        reg = pci_quatech_rqopr(port) & 0xC0;
        if (reg != QPCR_TEST_GET1)
                return -EINVAL;
        pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR2);
        reg = pci_quatech_rqopr(port) & 0xC0;
        if (reg != QPCR_TEST_GET2)
                return -EINVAL;
        pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR3);
        reg = pci_quatech_rqopr(port) & 0xC0;
        if (reg != QPCR_TEST_GET3)
                return -EINVAL;
        pci_quatech_wqopr(port, (qopr & QPCR_TEST_FOR1)|QPCR_TEST_FOR4);
        reg = pci_quatech_rqopr(port) & 0xC0;
        if (reg != QPCR_TEST_GET4)
                return -EINVAL;

        pci_quatech_wqopr(port, qopr);
        return 0;
}

static int pci_quatech_clock(struct uart_8250_port *port)
{
        u8 qopr, reg, set;
        unsigned long clock;

        if (pci_quatech_test(port) < 0)
                return 1843200;

        qopr = pci_quatech_rqopr(port);

        pci_quatech_wqopr(port, qopr & ~QOPR_CLOCK_X8);
        reg = pci_quatech_rqopr(port);
        if (reg & QOPR_CLOCK_X8) {
                clock = 1843200;
                goto out;
        }
        pci_quatech_wqopr(port, qopr | QOPR_CLOCK_X8);
        reg = pci_quatech_rqopr(port);
        if (!(reg & QOPR_CLOCK_X8)) {
                clock = 1843200;
                goto out;
        }
        reg &= QOPR_CLOCK_X8;
        if (reg == QOPR_CLOCK_X2) {
                clock =  3685400;
                set = QOPR_CLOCK_X2;
        } else if (reg == QOPR_CLOCK_X4) {
                clock = 7372800;
                set = QOPR_CLOCK_X4;
        } else if (reg == QOPR_CLOCK_X8) {
                clock = 14745600;
                set = QOPR_CLOCK_X8;
        } else {
                clock = 1843200;
                set = QOPR_CLOCK_X1;
        }
        qopr &= ~QOPR_CLOCK_RATE_MASK;
        qopr |= set;

out:
        pci_quatech_wqopr(port, qopr);
        return clock;
}

static int pci_quatech_rs422(struct uart_8250_port *port)
{
        u8 qmcr;
        int rs422 = 0;

        if (!pci_quatech_has_qmcr(port))
                return 0;
        qmcr = pci_quatech_rqmcr(port);
        pci_quatech_wqmcr(port, 0xFF);
        if (pci_quatech_rqmcr(port))
                rs422 = 1;
        pci_quatech_wqmcr(port, qmcr);
        return rs422;
}

static int pci_quatech_init(struct pci_dev *dev)
{
        if (pci_quatech_amcc(dev->device)) {
                unsigned long base = pci_resource_start(dev, 0);
                if (base) {
                        u32 tmp;
                        outl(inl(base + 0x38), base + 0x38);
                        tmp = inl(base + 0x3c);
                        outl(tmp | 0x01000000, base + 0x3c);
                        outl(tmp, base + 0x3c);
                }
        }
        return 0;
}

static int pci_quatech_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        /* Needed by pci_quatech calls below */
        port->port.iobase = pci_resource_start(priv->dev, FL_GET_BASE(board->flags));
        /* Set up the clocking */
        port->port.uartclk = pci_quatech_clock(port);
        /* For now just warn about RS422 */
        if (pci_quatech_rs422(port))
                pr_warn("quatech: software control of RS422 features not currently supported.\n");
        return pci_default_setup(priv, board, port, idx);
}

static void pci_quatech_exit(struct pci_dev *dev)
{
}

static int pci_default_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_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);
}

static int pci_pericom_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_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;

        port->port.uartclk = 14745600;

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

static int
ce4100_serial_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        int ret;

        ret = setup_port(priv, port, idx, 0, board->reg_shift);
        port->port.iotype = UPIO_MEM32;
        port->port.type = PORT_XSCALE;
        port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
        port->port.regshift = 2;

        return ret;
}

#define PCI_DEVICE_ID_INTEL_BYT_UART1   0x0f0a
#define PCI_DEVICE_ID_INTEL_BYT_UART2   0x0f0c

#define BYT_PRV_CLK                     0x800
#define BYT_PRV_CLK_EN                  (1 << 0)
#define BYT_PRV_CLK_M_VAL_SHIFT         1
#define BYT_PRV_CLK_N_VAL_SHIFT         16
#define BYT_PRV_CLK_UPDATE              (1 << 31)

#define BYT_GENERAL_REG                 0x808
#define BYT_GENERAL_DIS_RTS_N_OVERRIDE  (1 << 3)

#define BYT_TX_OVF_INT                  0x820
#define BYT_TX_OVF_INT_MASK             (1 << 1)

static void
byt_set_termios(struct uart_port *p, struct ktermios *termios,
                struct ktermios *old)
{
        unsigned int baud = tty_termios_baud_rate(termios);
        unsigned int m = 6912;
        unsigned int n = 15625;
        u32 reg;

        /* For baud rates 1M, 2M, 3M and 4M the dividers must be adjusted. */
        if (baud == 1000000 || baud == 2000000 || baud == 4000000) {
                m = 64;
                n = 100;

                p->uartclk = 64000000;
        } else if (baud == 3000000) {
                m = 48;
                n = 100;

                p->uartclk = 48000000;
        } else {
                p->uartclk = 44236800;
        }

        /* Reset the clock */
        reg = (m << BYT_PRV_CLK_M_VAL_SHIFT) | (n << BYT_PRV_CLK_N_VAL_SHIFT);
        writel(reg, p->membase + BYT_PRV_CLK);
        reg |= BYT_PRV_CLK_EN | BYT_PRV_CLK_UPDATE;
        writel(reg, p->membase + BYT_PRV_CLK);

        /*
         * If auto-handshake mechanism is not enabled,
         * disable rts_n override
         */
        reg = readl(p->membase + BYT_GENERAL_REG);
        reg &= ~BYT_GENERAL_DIS_RTS_N_OVERRIDE;
        if (termios->c_cflag & CRTSCTS)
                reg |= BYT_GENERAL_DIS_RTS_N_OVERRIDE;
        writel(reg, p->membase + BYT_GENERAL_REG);

        serial8250_do_set_termios(p, termios, old);
}

static bool byt_dma_filter(struct dma_chan *chan, void *param)
{
        return chan->chan_id == *(int *)param;
}

static int
byt_serial_setup(struct serial_private *priv,
                 const struct pciserial_board *board,
                 struct uart_8250_port *port, int idx)
{
        struct uart_8250_dma *dma;
        int ret;

        dma = devm_kzalloc(port->port.dev, sizeof(*dma), GFP_KERNEL);
        if (!dma)
                return -ENOMEM;

        switch (priv->dev->device) {
        case PCI_DEVICE_ID_INTEL_BYT_UART1:
                dma->rx_chan_id = 3;
                dma->tx_chan_id = 2;
                break;
        case PCI_DEVICE_ID_INTEL_BYT_UART2:
                dma->rx_chan_id = 5;
                dma->tx_chan_id = 4;
                break;
        default:
                return -EINVAL;
        }

        dma->rxconf.slave_id = dma->rx_chan_id;
        dma->rxconf.src_maxburst = 16;

        dma->txconf.slave_id = dma->tx_chan_id;
        dma->txconf.dst_maxburst = 16;

        dma->fn = byt_dma_filter;
        dma->rx_param = &dma->rx_chan_id;
        dma->tx_param = &dma->tx_chan_id;

        ret = pci_default_setup(priv, board, port, idx);
        port->port.iotype = UPIO_MEM;
        port->port.type = PORT_16550A;
        port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
        port->port.set_termios = byt_set_termios;
        port->port.fifosize = 64;
        port->tx_loadsz = 64;
        port->dma = dma;
        port->capabilities = UART_CAP_FIFO | UART_CAP_AFE;

        /* Disable Tx counter interrupts */
        writel(BYT_TX_OVF_INT_MASK, port->port.membase + BYT_TX_OVF_INT);

        return ret;
}

static int
pci_omegapci_setup(struct serial_private *priv,
                      const struct pciserial_board *board,
                      struct uart_8250_port *port, int idx)
{
        return setup_port(priv, port, 2, idx * 8, 0);
}

static int
pci_brcm_trumanage_setup(struct serial_private *priv,
                         const struct pciserial_board *board,
                         struct uart_8250_port *port, int idx)
{
        int ret = pci_default_setup(priv, board, port, idx);

        port->port.type = PORT_BRCM_TRUMANAGE;
        port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
        return ret;
}

static int pci_fintek_setup(struct serial_private *priv,
                            const struct pciserial_board *board,
                            struct uart_8250_port *port, int idx)
{
        struct pci_dev *pdev = priv->dev;
        unsigned long base;
        unsigned long iobase;
        unsigned long ciobase = 0;
        u8 config_base;

        /*
         * We are supposed to be able to read these from the PCI config space,
         * but the values there don't seem to match what we need to use, so
         * just use these hard-coded values for now, as they are correct.
         */
        switch (idx) {
        case 0: iobase = 0xe000; config_base = 0x40; break;
        case 1: iobase = 0xe008; config_base = 0x48; break;
        case 2: iobase = 0xe010; config_base = 0x50; break;
        case 3: iobase = 0xe018; config_base = 0x58; break;
        case 4: iobase = 0xe020; config_base = 0x60; break;
        case 5: iobase = 0xe028; config_base = 0x68; break;
        case 6: iobase = 0xe030; config_base = 0x70; break;
        case 7: iobase = 0xe038; config_base = 0x78; break;
        case 8: iobase = 0xe040; config_base = 0x80; break;
        case 9: iobase = 0xe048; config_base = 0x88; break;
        case 10: iobase = 0xe050; config_base = 0x90; break;
        case 11: iobase = 0xe058; config_base = 0x98; break;
        default:
                /* Unknown number of ports, get out of here */
                return -EINVAL;
        }

        if (idx < 4) {
                base = pci_resource_start(priv->dev, 3);
                ciobase = (int)(base + (0x8 * idx));
        }

        dev_dbg(&pdev->dev, "%s: idx=%d iobase=0x%lx ciobase=0x%lx config_base=0x%2x\n",
                __func__, idx, iobase, ciobase, config_base);

        /* Enable UART I/O port */
        pci_write_config_byte(pdev, config_base + 0x00, 0x01);

        /* Select 128-byte FIFO and 8x FIFO threshold */
        pci_write_config_byte(pdev, config_base + 0x01, 0x33);

        /* LSB UART */
        pci_write_config_byte(pdev, config_base + 0x04, (u8)(iobase & 0xff));

        /* MSB UART */
        pci_write_config_byte(pdev, config_base + 0x05, (u8)((iobase & 0xff00) >> 8));

        /* irq number, this usually fails, but the spec says to do it anyway. */
        pci_write_config_byte(pdev, config_base + 0x06, pdev->irq);

        port->port.iotype = UPIO_PORT;
        port->port.iobase = iobase;
        port->port.mapbase = 0;
        port->port.membase = NULL;
        port->port.regshift = 0;

        return 0;
}

static int skip_tx_en_setup(struct serial_private *priv,
                        const struct pciserial_board *board,
                        struct uart_8250_port *port, int idx)
{
        port->port.flags |= UPF_NO_TXEN_TEST;
        dev_dbg(&priv->dev->dev,
                "serial8250: skipping TxEn test for device [%04x:%04x] subsystem [%04x:%04x]\n",
                priv->dev->vendor, priv->dev->device,
                priv->dev->subsystem_vendor, priv->dev->subsystem_device);

        return pci_default_setup(priv, board, port, idx);
}

static void kt_handle_break(struct uart_port *p)
{
        struct uart_8250_port *up =
                container_of(p, struct uart_8250_port, port);
        /*
         * On receipt of a BI, serial device in Intel ME (Intel
         * management engine) needs to have its fifos cleared for sane
         * SOL (Serial Over Lan) output.
         */
        serial8250_clear_and_reinit_fifos(up);
}

static unsigned int kt_serial_in(struct uart_port *p, int offset)
{
        struct uart_8250_port *up =
                container_of(p, struct uart_8250_port, port);
        unsigned int val;

        /*
         * When the Intel ME (management engine) gets reset its serial
         * port registers could return 0 momentarily.  Functions like
         * serial8250_console_write, read and save the IER, perform
         * some operation and then restore it.  In order to avoid
         * setting IER register inadvertently to 0, if the value read
         * is 0, double check with ier value in uart_8250_port and use
         * that instead.  up->ier should be the same value as what is
         * currently configured.
         */
        val = inb(p->iobase + offset);
        if (offset == UART_IER) {
                if (val == 0)
                        val = up->ier;
        }
        return val;
}

static int kt_serial_setup(struct serial_private *priv,
                           const struct pciserial_board *board,
                           struct uart_8250_port *port, int idx)
{
        port->port.flags |= UPF_BUG_THRE;
        port->port.serial_in = kt_serial_in;
        port->port.handle_break = kt_handle_break;
        return skip_tx_en_setup(priv, board, port, idx);
}

static int pci_eg20t_init(struct pci_dev *dev)
{
#if defined(CONFIG_SERIAL_PCH_UART) || defined(CONFIG_SERIAL_PCH_UART_MODULE)
        return -ENODEV;
#else
        return 0;
#endif
}

static int
pci_xr17c154_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        port->port.flags |= UPF_EXAR_EFR;
        return pci_default_setup(priv, board, port, idx);
}

static int
pci_xr17v35x_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        u8 __iomem *p;

        p = pci_ioremap_bar(priv->dev, 0);
        if (p == NULL)
                return -ENOMEM;

        port->port.flags |= UPF_EXAR_EFR;

        /*
         * Setup Multipurpose Input/Output pins.
         */
        if (idx == 0) {
                writeb(0x00, p + 0x8f); /*MPIOINT[7:0]*/
                writeb(0x00, p + 0x90); /*MPIOLVL[7:0]*/
                writeb(0x00, p + 0x91); /*MPIO3T[7:0]*/
                writeb(0x00, p + 0x92); /*MPIOINV[7:0]*/
                writeb(0x00, p + 0x93); /*MPIOSEL[7:0]*/
                writeb(0x00, p + 0x94); /*MPIOOD[7:0]*/
                writeb(0x00, p + 0x95); /*MPIOINT[15:8]*/
                writeb(0x00, p + 0x96); /*MPIOLVL[15:8]*/
                writeb(0x00, p + 0x97); /*MPIO3T[15:8]*/
                writeb(0x00, p + 0x98); /*MPIOINV[15:8]*/
                writeb(0x00, p + 0x99); /*MPIOSEL[15:8]*/
                writeb(0x00, p + 0x9a); /*MPIOOD[15:8]*/
        }
        writeb(0x00, p + UART_EXAR_8XMODE);
        writeb(UART_FCTR_EXAR_TRGD, p + UART_EXAR_FCTR);
        writeb(128, p + UART_EXAR_TXTRG);
        writeb(128, p + UART_EXAR_RXTRG);
        iounmap(p);

        return pci_default_setup(priv, board, port, idx);
}

#define PCI_DEVICE_ID_COMMTECH_4222PCI335 0x0004
#define PCI_DEVICE_ID_COMMTECH_4224PCI335 0x0002
#define PCI_DEVICE_ID_COMMTECH_2324PCI335 0x000a
#define PCI_DEVICE_ID_COMMTECH_2328PCI335 0x000b

static int
pci_fastcom335_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
                  struct uart_8250_port *port, int idx)
{
        u8 __iomem *p;

        p = pci_ioremap_bar(priv->dev, 0);
        if (p == NULL)
                return -ENOMEM;

        port->port.flags |= UPF_EXAR_EFR;

        /*
         * Setup Multipurpose Input/Output pins.
         */
        if (idx == 0) {
                switch (priv->dev->device) {
                case PCI_DEVICE_ID_COMMTECH_4222PCI335:
                case PCI_DEVICE_ID_COMMTECH_4224PCI335:
                        writeb(0x78, p + 0x90); /* MPIOLVL[7:0] */
                        writeb(0x00, p + 0x92); /* MPIOINV[7:0] */
                        writeb(0x00, p + 0x93); /* MPIOSEL[7:0] */
                        break;
                case PCI_DEVICE_ID_COMMTECH_2324PCI335:
                case PCI_DEVICE_ID_COMMTECH_2328PCI335:
                        writeb(0x00, p + 0x90); /* MPIOLVL[7:0] */
                        writeb(0xc0, p + 0x92); /* MPIOINV[7:0] */
                        writeb(0xc0, p + 0x93); /* MPIOSEL[7:0] */
                        break;
                }
                writeb(0x00, p + 0x8f); /* MPIOINT[7:0] */
                writeb(0x00, p + 0x91); /* MPIO3T[7:0] */
                writeb(0x00, p + 0x94); /* MPIOOD[7:0] */
        }
        writeb(0x00, p + UART_EXAR_8XMODE);
        writeb(UART_FCTR_EXAR_TRGD, p + UART_EXAR_FCTR);
        writeb(32, p + UART_EXAR_TXTRG);
        writeb(32, p + UART_EXAR_RXTRG);
        iounmap(p);

        return pci_default_setup(priv, board, port, idx);
}

static int
pci_wch_ch353_setup(struct serial_private *priv,
                    const struct pciserial_board *board,
                    struct uart_8250_port *port, int idx)
{
        port->port.flags |= UPF_FIXED_TYPE;
        port->port.type = PORT_16550A;
        return pci_default_setup(priv, board, port, idx);
}

#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
#define PCI_SUBDEVICE_ID_SIIG_DUAL_00   0x2500
#define PCI_SUBDEVICE_ID_SIIG_DUAL_30   0x2530
#define PCI_VENDOR_ID_ADVANTECH         0x13fe
#define PCI_DEVICE_ID_INTEL_CE4100_UART 0x2e66
#define PCI_DEVICE_ID_ADVANTECH_PCI3620 0x3620
#define PCI_DEVICE_ID_TITAN_200I        0x8028
#define PCI_DEVICE_ID_TITAN_400I        0x8048
#define PCI_DEVICE_ID_TITAN_800I        0x8088
#define PCI_DEVICE_ID_TITAN_800EH       0xA007
#define PCI_DEVICE_ID_TITAN_800EHB      0xA008
#define PCI_DEVICE_ID_TITAN_400EH       0xA009
#define PCI_DEVICE_ID_TITAN_100E        0xA010
#define PCI_DEVICE_ID_TITAN_200E        0xA012
#define PCI_DEVICE_ID_TITAN_400E        0xA013
#define PCI_DEVICE_ID_TITAN_800E        0xA014
#define PCI_DEVICE_ID_TITAN_200EI       0xA016
#define PCI_DEVICE_ID_TITAN_200EISI     0xA017
#define PCI_DEVICE_ID_TITAN_400V3       0xA310
#define PCI_DEVICE_ID_TITAN_410V3       0xA312
#define PCI_DEVICE_ID_TITAN_800V3       0xA314
#define PCI_DEVICE_ID_TITAN_800V3B      0xA315
#define PCI_DEVICE_ID_OXSEMI_16PCI958   0x9538
#define PCIE_DEVICE_ID_NEO_2_OX_IBM     0x00F6
#define PCI_DEVICE_ID_PLX_CRONYX_OMEGA  0xc001
#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
#define PCI_VENDOR_ID_WCH               0x4348
#define PCI_DEVICE_ID_WCH_CH352_2S      0x3253
#define PCI_DEVICE_ID_WCH_CH353_4S      0x3453
#define PCI_DEVICE_ID_WCH_CH353_2S1PF   0x5046
#define PCI_DEVICE_ID_WCH_CH353_2S1P    0x7053
#define PCI_VENDOR_ID_AGESTAR           0x5372
#define PCI_DEVICE_ID_AGESTAR_9375      0x6872
#define PCI_VENDOR_ID_ASIX              0x9710
#define PCI_DEVICE_ID_COMMTECH_4224PCIE 0x0020
#define PCI_DEVICE_ID_COMMTECH_4228PCIE 0x0021
#define PCI_DEVICE_ID_COMMTECH_4222PCIE 0x0022
#define PCI_DEVICE_ID_BROADCOM_TRUMANAGE 0x160a
#define PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800 0x818e

#define PCI_VENDOR_ID_SUNIX             0x1fd4
#define PCI_DEVICE_ID_SUNIX_1999        0x1999


/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588

/*
 * 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_AMCC,
                .device         = PCI_DEVICE_ID_AMCC_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,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_8257X_SOL,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = skip_tx_en_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_82573L_SOL,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = skip_tx_en_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_82573E_SOL,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = skip_tx_en_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_CE4100_UART,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = ce4100_serial_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_PATSBURG_KT,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = kt_serial_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_BYT_UART1,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = byt_serial_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = PCI_DEVICE_ID_INTEL_BYT_UART2,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = byt_serial_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           = pci_ite887x_exit,
        },
        /*
         * National Instruments
         */
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI23216,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI2328,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI2324,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI2322,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI2324I,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PCI2322I,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8420_23216,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8420_2328,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8420_2324,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8420_2322,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8422_2324,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },
        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_DEVICE_ID_NI_PXI8422_2322,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8420_init,
                .setup          = pci_default_setup,
                .exit           = pci_ni8420_exit,
        },

        {
                .vendor         = PCI_VENDOR_ID_NI,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_ni8430_init,
                .setup          = pci_ni8430_setup,
                .exit           = pci_ni8430_exit,
        },
        /* Quatech */
        {
                .vendor         = PCI_VENDOR_ID_QUATECH,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_quatech_init,
                .setup          = pci_quatech_setup,
                .exit           = pci_quatech_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           = 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           = pci_plx9050_exit,
        },
        /*
         * Pericom
         */
        {
                .vendor         = 0x12d8,
                .device         = 0x7952,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_pericom_setup,
        },
        {
                .vendor         = 0x12d8,
                .device         = 0x7954,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_pericom_setup,
        },
        {
                .vendor         = 0x12d8,
                .device         = 0x7958,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_pericom_setup,
        },

        /*
         * 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           = 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           = 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           = 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           = 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           = 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           = 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           = 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,
                .probe          = pci_timedia_probe,
                .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,
        },
        /*
         * SUNIX (Timedia) cards
         * Do not "probe" for these cards as there is at least one combination
         * card that should be handled by parport_pc that doesn't match the
         * rule in pci_timedia_probe.
         * It is part number is MIO5079A but its subdevice ID is 0x0102.
         * There are some boards with part number SER5037AL that report
         * subdevice ID 0x0002.
         */
        {
                .vendor         = PCI_VENDOR_ID_SUNIX,
                .device         = PCI_DEVICE_ID_SUNIX_1999,
                .subvendor      = PCI_VENDOR_ID_SUNIX,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_timedia_init,
                .setup          = pci_timedia_setup,
        },
        /*
         * Exar cards
         */
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17C152,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17c154_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17C154,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17c154_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17C158,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17c154_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17V352,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17V354,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_EXAR,
                .device = PCI_DEVICE_ID_EXAR_XR17V358,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_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_netmos_9900_setup,
        },
        /*
         * For Oxford Semiconductor Tornado based devices
         */
        {
                .vendor         = PCI_VENDOR_ID_OXSEMI,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_oxsemi_tornado_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_MAINPINE,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_oxsemi_tornado_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_DIGI,
                .device         = PCIE_DEVICE_ID_NEO_2_OX_IBM,
                .subvendor              = PCI_SUBVENDOR_ID_IBM,
                .subdevice              = PCI_ANY_ID,
                .init                   = pci_oxsemi_tornado_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = 0x8811,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = 0x8812,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = 0x8813,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = PCI_VENDOR_ID_INTEL,
                .device         = 0x8814,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = 0x10DB,
                .device         = 0x8027,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = 0x10DB,
                .device         = 0x8028,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = 0x10DB,
                .device         = 0x8029,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = 0x10DB,
                .device         = 0x800C,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        {
                .vendor         = 0x10DB,
                .device         = 0x800D,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .init           = pci_eg20t_init,
                .setup          = pci_default_setup,
        },
        /*
         * Cronyx Omega PCI (PLX-chip based)
         */
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_CRONYX_OMEGA,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_omegapci_setup,
        },
        /* WCH CH353 2S1P card (16550 clone) */
        {
                .vendor         = PCI_VENDOR_ID_WCH,
                .device         = PCI_DEVICE_ID_WCH_CH353_2S1P,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_wch_ch353_setup,
        },
        /* WCH CH353 4S card (16550 clone) */
        {
                .vendor         = PCI_VENDOR_ID_WCH,
                .device         = PCI_DEVICE_ID_WCH_CH353_4S,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_wch_ch353_setup,
        },
        /* WCH CH353 2S1PF card (16550 clone) */
        {
                .vendor         = PCI_VENDOR_ID_WCH,
                .device         = PCI_DEVICE_ID_WCH_CH353_2S1PF,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_wch_ch353_setup,
        },
        /* WCH CH352 2S card (16550 clone) */
        {
                .vendor         = PCI_VENDOR_ID_WCH,
                .device         = PCI_DEVICE_ID_WCH_CH352_2S,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_wch_ch353_setup,
        },
        /*
         * ASIX devices with FIFO bug
         */
        {
                .vendor         = PCI_VENDOR_ID_ASIX,
                .device         = PCI_ANY_ID,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_asix_setup,
        },
        /*
         * Commtech, Inc. Fastcom adapters
         *
         */
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_4222PCI335,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fastcom335_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_4224PCI335,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fastcom335_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_2324PCI335,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fastcom335_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_2328PCI335,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fastcom335_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_4222PCIE,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_4224PCIE,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_setup,
        },
        {
                .vendor = PCI_VENDOR_ID_COMMTECH,
                .device = PCI_DEVICE_ID_COMMTECH_4228PCIE,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_xr17v35x_setup,
        },
        /*
         * Broadcom TruManage (NetXtreme)
         */
        {
                .vendor         = PCI_VENDOR_ID_BROADCOM,
                .device         = PCI_DEVICE_ID_BROADCOM_TRUMANAGE,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_brcm_trumanage_setup,
        },
        {
                .vendor         = 0x1c29,
                .device         = 0x1104,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fintek_setup,
        },
        {
                .vendor         = 0x1c29,
                .device         = 0x1108,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fintek_setup,
        },
        {
                .vendor         = 0x1c29,
                .device         = 0x1112,
                .subvendor      = PCI_ANY_ID,
                .subdevice      = PCI_ANY_ID,
                .setup          = pci_fintek_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,
                                const 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_1152000_200,
        pbn_b0_4_1152000_200,
        pbn_b0_8_1152000_200,

        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_4_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_16_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_115200,
        pbn_b1_bt_4_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_8_1152000,

        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,

        pbn_b4_bt_2_921600,
        pbn_b4_bt_4_921600,
        pbn_b4_bt_8_921600,

        /*
         * Board-specific versions.
         */
        pbn_panacom,
        pbn_panacom2,
        pbn_panacom4,
        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_exar_XR17V352,
        pbn_exar_XR17V354,
        pbn_exar_XR17V358,
        pbn_exar_ibm_saturn,
        pbn_pasemi_1682M,
        pbn_ni8430_2,
        pbn_ni8430_4,
        pbn_ni8430_8,
        pbn_ni8430_16,
        pbn_ADDIDATA_PCIe_1_3906250,
        pbn_ADDIDATA_PCIe_2_3906250,
        pbn_ADDIDATA_PCIe_4_3906250,
        pbn_ADDIDATA_PCIe_8_3906250,
        pbn_ce4100_1_115200,
        pbn_byt,
        pbn_omegapci,
        pbn_NETMOS9900_2s_115200,
        pbn_brcm_trumanage,
        pbn_fintek_4,
        pbn_fintek_8,
        pbn_fintek_12,
};

/*
 * 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[] = {
        [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_1152000_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 1152000,
                .uart_offset    = 0x200,
        },

        [pbn_b0_4_1152000_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 1152000,
                .uart_offset    = 0x200,
        },

        [pbn_b0_8_1152000_200] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 1152000,
                .uart_offset    = 0x200,
        },

        [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_4_115200] = {
                .flags          = FL_BASE0|FL_BASE_BARS,
                .num_ports      = 4,
                .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_16_115200] = {
                .flags          = FL_BASE1,
                .num_ports      = 16,
                .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_115200] = {
                .flags          = FL_BASE1|FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 115200,
                .uart_offset    = 8,

        },
        [pbn_b1_bt_4_115200] = {
                .flags          = FL_BASE1|FL_BASE_BARS,
                .num_ports      = 4,
                .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_8_1152000] = {
                .flags          = FL_BASE2,
                .num_ports      = 8,
                .base_baud      = 1152000,
                .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,
        },

        [pbn_b4_bt_2_921600] = {
                .flags          = FL_BASE4,
                .num_ports      = 2,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b4_bt_4_921600] = {
                .flags          = FL_BASE4,
                .num_ports      = 4,
                .base_baud      = 921600,
                .uart_offset    = 8,
        },
        [pbn_b4_bt_8_921600] = {
                .flags          = FL_BASE4,
                .num_ports      = 8,
                .base_baud      = 921600,
                .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,
        },

        /* 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,
        },
        [pbn_exar_XR17V352] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 7812500,
                .uart_offset    = 0x400,
                .reg_shift      = 0,
                .first_offset   = 0,
        },
        [pbn_exar_XR17V354] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 7812500,
                .uart_offset    = 0x400,
                .reg_shift      = 0,
                .first_offset   = 0,
        },
        [pbn_exar_XR17V358] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 7812500,
                .uart_offset    = 0x400,
                .reg_shift      = 0,
                .first_offset   = 0,
        },
        [pbn_exar_ibm_saturn] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .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,
        },
        /*
         * National Instruments 843x
         */
        [pbn_ni8430_16] = {
                .flags          = FL_BASE0,
                .num_ports      = 16,
                .base_baud      = 3686400,
                .uart_offset    = 0x10,
                .first_offset   = 0x800,
        },
        [pbn_ni8430_8] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 3686400,
                .uart_offset    = 0x10,
                .first_offset   = 0x800,
        },
        [pbn_ni8430_4] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 3686400,
                .uart_offset    = 0x10,
                .first_offset   = 0x800,
        },
        [pbn_ni8430_2] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 3686400,
                .uart_offset    = 0x10,
                .first_offset   = 0x800,
        },
        /*
         * ADDI-DATA GmbH PCI-Express communication cards <info@addi-data.com>
         */
        [pbn_ADDIDATA_PCIe_1_3906250] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 3906250,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_ADDIDATA_PCIe_2_3906250] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 3906250,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_ADDIDATA_PCIe_4_3906250] = {
                .flags          = FL_BASE0,
                .num_ports      = 4,
                .base_baud      = 3906250,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_ADDIDATA_PCIe_8_3906250] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 3906250,
                .uart_offset    = 0x200,
                .first_offset   = 0x1000,
        },
        [pbn_ce4100_1_115200] = {
                .flags          = FL_BASE_BARS,
                .num_ports      = 2,
                .base_baud      = 921600,
                .reg_shift      = 2,
        },
        [pbn_byt] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .base_baud      = 2764800,
                .uart_offset    = 0x80,
                .reg_shift      = 2,
        },
        [pbn_omegapci] = {
                .flags          = FL_BASE0,
                .num_ports      = 8,
                .base_baud      = 115200,
                .uart_offset    = 0x200,
        },
        [pbn_NETMOS9900_2s_115200] = {
                .flags          = FL_BASE0,
                .num_ports      = 2,
                .base_baud      = 115200,
        },
        [pbn_brcm_trumanage] = {
                .flags          = FL_BASE0,
                .num_ports      = 1,
                .reg_shift      = 2,
                .base_baud      = 115200,
        },
        [pbn_fintek_4] = {
                .num_ports      = 4,
                .uart_offset    = 8,
                .base_baud      = 115200,
                .first_offset   = 0x40,
        },
        [pbn_fintek_8] = {
                .num_ports      = 8,
                .uart_offset    = 8,
                .base_baud      = 115200,
                .first_offset   = 0x40,
        },
        [pbn_fintek_12] = {
                .num_ports      = 12,
                .uart_offset    = 8,
                .base_baud      = 115200,
                .first_offset   = 0x40,
        },
};

static const struct pci_device_id blacklist[] = {
        /* softmodems */
        { PCI_VDEVICE(AL, 0x5457), }, /* ALi Corporation M5457 AC'97 Modem */
        { PCI_VDEVICE(MOTOROLA, 0x3052), }, /* Motorola Si3052-based modem */
        { PCI_DEVICE(0x1543, 0x3052), }, /* Si3052-based modem, default IDs */

        /* multi-io cards handled by parport_serial */
        { PCI_DEVICE(0x4348, 0x7053), }, /* WCH CH353 2S1P */
};

/*
 * 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
serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
{
        const struct pci_device_id *bldev;
        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 or are handled by other modules.
         */
        for (bldev = blacklist;
             bldev < blacklist + ARRAY_SIZE(blacklist);
             bldev++) {
                if (dev->vendor == bldev->vendor &&
                    dev->device == bldev->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(const struct pciserial_board *board,
                   const 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;
}

struct serial_private *
pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
{
        struct uart_8250_port uart;
        struct serial_private *priv;
        struct pci_serial_quirk *quirk;
        int rc, nr_ports, i;

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

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

                dev_dbg(&dev->dev, "Setup PCI port: port %lx, irq %d, type %d\n",
                        uart.port.iobase, uart.port.irq, uart.port.iotype);

                priv->line[i] = serial8250_register_8250_port(&uart);
                if (priv->line[i] < 0) {
                        dev_err(&dev->dev,
                                "Couldn't register serial port %lx, irq %d, type %d, error %d\n",
                                uart.port.iobase, uart.port.irq,
                                uart.port.iotype, 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;

        for (i = 0; i < priv->nr; i++)
                if (priv->line[i] >= 0)
                        serial8250_suspend_port(priv->line[i]);

        /*
         * Ensure that every init quirk is properly torn down
         */
        if (priv->quirk->exit)
                priv->quirk->exit(priv->dev);
}
EXPORT_SYMBOL_GPL(pciserial_suspend_ports);

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

        /*
         * Ensure that the board is correctly configured.
         */
        if (priv->quirk->init)
                priv->quirk->init(priv->dev);

        for (i = 0; i < priv->nr; i++)
                if (priv->line[i] >= 0)
                        serial8250_resume_port(priv->line[i]);
}
EXPORT_SYMBOL_GPL(pciserial_resume_ports);

/*
 * Probe one serial board.  Unfortunately, there is no rhyme nor reason
 * to the arrangement of serial ports on a PCI card.
 */
static int
pciserial_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
{
        struct pci_serial_quirk *quirk;
        struct serial_private *priv;
        const struct pciserial_board *board;
        struct pciserial_board tmp;
        int rc;

        quirk = find_quirk(dev);
        if (quirk->probe) {
                rc = quirk->probe(dev);
                if (rc)
                        return rc;
        }

        if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
                dev_err(&dev->dev, "invalid driver_data: %ld\n",
                        ent->driver_data);
                return -EINVAL;
        }

        board = &pci_boards[ent->driver_data];

        rc = pci_enable_device(dev);
        pci_save_state(dev);
        if (rc)
                return rc;

        if (ent->driver_data == pbn_default) {
                /*
                 * Use a copy of the pci_board entry for this;
                 * avoid changing entries in the table.
                 */
                memcpy(&tmp, board, sizeof(struct pciserial_board));
                board = &tmp;

                /*
                 * We matched one of our class entries.  Try to
                 * determine the parameters of this board.
                 */
                rc = serial_pci_guess_board(dev, &tmp);
                if (rc)
                        goto disable;
        } else {
                /*
                 * We matched an explicit entry.  If we are able to
                 * detect this boards settings with our heuristic,
                 * then we no longer need this entry.
                 */
                memcpy(&tmp, &pci_boards[pbn_default],
                       sizeof(struct pciserial_board));
                rc = serial_pci_guess_board(dev, &tmp);
                if (rc == 0 && serial_pci_matches(board, &tmp))
                        moan_device("Redundant entry in serial pci_table.",
                                    dev);
        }

        priv = pciserial_init_ports(dev, board);
        if (!IS_ERR(priv)) {
                pci_set_drvdata(dev, priv);
                return 0;
        }

        rc = PTR_ERR(priv);

 disable:
        pci_disable_device(dev);
        return rc;
}

static void pciserial_remove_one(struct pci_dev *dev)
{
        struct serial_private *priv = pci_get_drvdata(dev);

        pciserial_remove_ports(priv);

        pci_disable_device(dev);
}

#ifdef CONFIG_PM
static int pciserial_suspend_one(struct pci_dev *dev, pm_message_t state)
{
        struct serial_private *priv = pci_get_drvdata(dev);

        if (priv)
                pciserial_suspend_ports(priv);

        pci_save_state(dev);
        pci_set_power_state(dev, pci_choose_state(dev, state));
        return 0;
}

static int pciserial_resume_one(struct pci_dev *dev)
{
        int err;
        struct serial_private *priv = pci_get_drvdata(dev);

        pci_set_power_state(dev, PCI_D0);
        pci_restore_state(dev);

        if (priv) {
                /*
                 * The device may have been disabled.  Re-enable it.
                 */
                err = pci_enable_device(dev);
                /* FIXME: We cannot simply error out here */
                if (err)
                        dev_err(&dev->dev, "Unable to re-enable ports, trying to continue.\n");
                pciserial_resume_ports(priv);
        }
        return 0;
}
#endif

static struct pci_device_id serial_pci_tbl[] = {
        /* Advantech use PCI_DEVICE_ID_ADVANTECH_PCI3620 (0x3620) as 'PCI_SUBVENDOR_ID' */
        {       PCI_VENDOR_ID_ADVANTECH, PCI_DEVICE_ID_ADVANTECH_PCI3620,
                PCI_DEVICE_ID_ADVANTECH_PCI3620, 0x0001, 0, 0,
                pbn_b2_8_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
                pbn_b1_8_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
                pbn_b1_4_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
                pbn_b1_2_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
                pbn_b1_8_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
                pbn_b1_4_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
                pbn_b1_2_1382400 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485, 0, 0,
                pbn_b1_8_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_4_4, 0, 0,
                pbn_b1_8_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485, 0, 0,
                pbn_b1_4_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485_2_2, 0, 0,
                pbn_b1_4_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_485, 0, 0,
                pbn_b1_2_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_2_6, 0, 0,
                pbn_b1_8_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH081101V1, 0, 0,
                pbn_b1_8_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH041101V1, 0, 0,
                pbn_b1_4_921600 },
        {       PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_20MHZ, 0, 0,
                pbn_b1_2_1250000 },
        {       PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_TITAN_2, 0, 0,
                pbn_b0_2_1843200 },
        {       PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_TITAN_4, 0, 0,
                pbn_b0_4_1843200 },
        {       PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
                PCI_VENDOR_ID_AFAVLAB,
                PCI_SUBDEVICE_ID_AFAVLAB_P061, 0, 0,
                pbn_b0_4_1152000 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_2_232, 0, 0,
                pbn_b0_2_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C154,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_4_232, 0, 0,
                pbn_b0_4_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C158,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_8_232, 0, 0,
                pbn_b0_8_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_1_1, 0, 0,
                pbn_b0_2_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C154,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_2_2, 0, 0,
                pbn_b0_4_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C158,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_4_4, 0, 0,
                pbn_b0_8_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_2, 0, 0,
                pbn_b0_2_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C154,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_4, 0, 0,
                pbn_b0_4_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C158,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_8, 0, 0,
                pbn_b0_8_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_2_485, 0, 0,
                pbn_b0_2_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C154,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_4_485, 0, 0,
                pbn_b0_4_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C158,
                PCI_SUBVENDOR_ID_CONNECT_TECH,
                PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_8_485, 0, 0,
                pbn_b0_8_1843200_200 },
        {       PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
                PCI_VENDOR_ID_IBM, PCI_SUBDEVICE_ID_IBM_SATURN_SERIAL_ONE_PORT,
                0, 0, pbn_exar_ibm_saturn },

        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_U530,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_bt_1_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM2,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_bt_2_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM422,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_bt_4_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM232,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_bt_2_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM4,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_bt_4_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM8,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
                pbn_b2_8_115200 },
        {       PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_7803,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,