path: root/drivers/tty/serial/8250/8250_mxpcie.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Moxa PCIe multiport serial device driver
 *
 * Copyright (C) 2025 Moxa Inc. (support@moxa.com)
 * Author: Crescent Hsieh <crescentcy.hsieh@moxa.com>
 */
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/device.h>
#include <linux/dev_printk.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/tty_flip.h>
#include <linux/types.h>

#include <linux/8250_pci.h>
#include <linux/serial_8250.h>

#include "8250.h"

#define PCI_DEVICE_ID_MOXA_CP102E	0x1024
#define PCI_DEVICE_ID_MOXA_CP102EL	0x1025
#define PCI_DEVICE_ID_MOXA_CP102N	0x1027
#define PCI_DEVICE_ID_MOXA_CP104EL_A	0x1045
#define PCI_DEVICE_ID_MOXA_CP104N	0x1046
#define PCI_DEVICE_ID_MOXA_CP112N	0x1121
#define PCI_DEVICE_ID_MOXA_CP114EL	0x1144
#define PCI_DEVICE_ID_MOXA_CP114N	0x1145
#define PCI_DEVICE_ID_MOXA_CP116E_A_A	0x1160
#define PCI_DEVICE_ID_MOXA_CP116E_A_B	0x1161
#define PCI_DEVICE_ID_MOXA_CP118EL_A	0x1182
#define PCI_DEVICE_ID_MOXA_CP118E_A_I	0x1183
#define PCI_DEVICE_ID_MOXA_CP132EL	0x1322
#define PCI_DEVICE_ID_MOXA_CP132N	0x1323
#define PCI_DEVICE_ID_MOXA_CP134EL_A	0x1342
#define PCI_DEVICE_ID_MOXA_CP134N	0x1343
#define PCI_DEVICE_ID_MOXA_CP138E_A	0x1381
#define PCI_DEVICE_ID_MOXA_CP168EL_A	0x1683

/* Bits in PCI device ID encoding board capabilities */
#define MOXA_DEV_ID_IFACE_MASK	GENMASK(11, 8)	/* Supported serial interface */
#define MOXA_DEV_ID_NPORTS_MASK	GENMASK(7, 4)	/* Number of UART ports */

/* UART */
#define MOXA_PUART_BASE_BAUD		921600
#define MOXA_PUART_OFFSET		0x200
#define MOXA_PUART_TX_TRIG_DEFAULT	0
#define MOXA_PUART_RX_TRIG_DEFAULT	96
#define MOXA_PUART_RX_FLOW_LOW_DEFAULT	16
#define MOXA_PUART_RX_FLOW_HIGH_DEFAULT	110

/* Special Function Register (SFR) */
#define MOXA_PUART_SFR		0x07
#define MOXA_PUART_SFR_FORCE_TX	BIT(0)
#define MOXA_PUART_SFR_950	BIT(5)

/* Enhanced Function Register (EFR) */
#define MOXA_PUART_EFR				0x0A
#define MOXA_PUART_EFR_ENHANCED			BIT(4)
#define MOXA_PUART_EFR_AUTO_RTS			BIT(6)
#define MOXA_PUART_EFR_AUTO_CTS			BIT(7)
#define MOXA_PUART_EFR_RX_FLOW_MASK		GENMASK(1, 0)
#define MOXA_PUART_EFR_RX_FLOW_DISABLED		0x0
#define MOXA_PUART_EFR_RX_FLOW_XON2_XOFF2	0x1
#define MOXA_PUART_EFR_RX_FLOW_XON1_XOFF1	0x2
#define MOXA_PUART_EFR_RX_FLOW_COPY_TX		0x3
#define MOXA_PUART_EFR_TX_FLOW_MASK		GENMASK(3, 2)
#define MOXA_PUART_EFR_TX_FLOW_DISABLED		0x0
#define MOXA_PUART_EFR_TX_FLOW_XON2_XOFF2	0x1
#define MOXA_PUART_EFR_TX_FLOW_XON1_XOFF1	0x2
#define MOXA_PUART_EFR_TX_FLOW_RESERVED		0x3

#define MOXA_PUART_XON1		0x0B
#define MOXA_PUART_XON2		0x0C
#define MOXA_PUART_XOFF1	0x0D
#define MOXA_PUART_XOFF2	0x0E
#define MOXA_PUART_TTL		0x10	/* Tx Interrupt Trigger Level */
#define MOXA_PUART_RTL		0x11	/* Rx Interrupt Trigger Level */
#define MOXA_PUART_FCL		0x12	/* Flow Control Low Trigger Level */
#define MOXA_PUART_FCH		0x13	/* Flow Control High Trigger Level */
#define MOXA_PUART_RX_FIFO_CNT	0x15	/* Rx FIFO Data Counter */
#define MOXA_PUART_TX_FIFO_CNT	0x16	/* Tx FIFO Data Counter */

#define MOXA_PUART_RX_FIFO_MEM	0x100	/* Memory Space to Rx FIFO Data Register */
#define MOXA_PUART_TX_FIFO_MEM	0x100	/* Memory Space to Tx FIFO Data Register */

#define MOXA_GPIO_DIRECTION	0x09
#define MOXA_GPIO_OUTPUT	0x0A

#define MOXA_GPIO_PIN2	BIT(2)

#define MOXA_UIR_OFFSET		0x04
#define MOXA_UIR_RS232		0x00
#define MOXA_UIR_RS422		0x01
#define MOXA_UIR_RS485_4W	0x0B
#define MOXA_UIR_RS485_2W	0x0F

#define MOXA_EVEN_RS_MASK	GENMASK(3, 0)
#define MOXA_ODD_RS_MASK	GENMASK(7, 4)

struct mxpcie8250_port {
	int line;
	u8 rx_trig_level;
};

struct mxpcie8250 {
	unsigned int supp_rs;
	unsigned int num_ports;
	void __iomem *bar1_base; /* UART registers (MMIO) */
	void __iomem *bar2_base; /* UIR / GPIO / CPLD (IO) */
	struct mxpcie8250_port port[] __counted_by(num_ports);
};

enum {
	MOXA_SUPP_RS232 = BIT(0),
	MOXA_SUPP_RS422 = BIT(1),
	MOXA_SUPP_RS485 = BIT(2),
};

static const struct serial_rs485 mxpcie8250_rs485_supported = {
	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RX_DURING_TX | SER_RS485_MODE_RS422,
};

static bool mxpcie8250_is_mini_pcie(unsigned short device)
{
	if (device == PCI_DEVICE_ID_MOXA_CP102N ||
	    device == PCI_DEVICE_ID_MOXA_CP104N ||
	    device == PCI_DEVICE_ID_MOXA_CP112N ||
	    device == PCI_DEVICE_ID_MOXA_CP114N ||
	    device == PCI_DEVICE_ID_MOXA_CP132N ||
	    device == PCI_DEVICE_ID_MOXA_CP134N)
		return true;

	return false;
}

static unsigned int mxpcie8250_get_supp_rs(unsigned short device)
{
	switch (device & MOXA_DEV_ID_IFACE_MASK) {
	case 0x0000:
	case 0x0600:
		return MOXA_SUPP_RS232;
	case 0x0100:
		return MOXA_SUPP_RS232 | MOXA_SUPP_RS422 | MOXA_SUPP_RS485;
	case 0x0300:
		return MOXA_SUPP_RS422 | MOXA_SUPP_RS485;
	default:
		return 0;
	}
}

static unsigned short mxpcie8250_get_nports(unsigned short device)
{
	switch (device) {
	case PCI_DEVICE_ID_MOXA_CP116E_A_A:
	case PCI_DEVICE_ID_MOXA_CP116E_A_B:
		return 8;
	default:
		return FIELD_GET(MOXA_DEV_ID_NPORTS_MASK, device);
	}
}

static void mxpcie8250_set_interface(struct mxpcie8250 *priv,
				     unsigned int port_idx,
				     u8 mode)
{
	void __iomem *uir_addr = priv->bar2_base + MOXA_UIR_OFFSET + port_idx / 2;
	u8 cval;

	cval = ioread8(uir_addr);

	if (port_idx % 2)
		FIELD_MODIFY(MOXA_ODD_RS_MASK, &cval, mode);
	else
		FIELD_MODIFY(MOXA_EVEN_RS_MASK, &cval, mode);

	iowrite8(cval, uir_addr);
}

/*
 * Moxa PCIe multiport serial boards support switching serial interfaces
 * via the ioctl() command "TIOCSRS485". Supported modes and corresponding
 * flags in "serial_rs485":
 *
 *	RS232			= (no flags set)
 *	RS422			= SER_RS485_ENABLED | SER_RS485_MODE_RS422
 *	RS485_2W (half-duplex)	= SER_RS485_ENABLED
 *	RS485_4W (full-duplex)	= SER_RS485_ENABLED | SER_RS485_RX_DURING_TX
 */
static int mxpcie8250_rs485_config(struct uart_port *port,
				   struct ktermios *termios,
				   struct serial_rs485 *rs485)
{
	struct mxpcie8250 *priv = dev_get_drvdata(port->dev);
	u8 mode = MOXA_UIR_RS232;

	if (rs485->flags & SER_RS485_ENABLED) {
		if (rs485->flags & SER_RS485_MODE_RS422)
			mode = MOXA_UIR_RS422;
		else if (rs485->flags & SER_RS485_RX_DURING_TX)
			mode = MOXA_UIR_RS485_4W;
		else
			mode = MOXA_UIR_RS485_2W;
	} else if (!(priv->supp_rs & MOXA_SUPP_RS232)) {
		return -ENODEV;
	}
	mxpcie8250_set_interface(priv, port->port_id, mode);

	return 0;
}

static void mxpcie8250_set_termios(struct uart_port *port,
				   struct ktermios *new,
				   const struct ktermios *old)
{
	struct uart_8250_port *up = up_to_u8250p(port);
	struct tty_struct *tty = port->state->port.tty;
	unsigned int cflag = tty->termios.c_cflag;
	u8 efr, val;

	serial8250_do_set_termios(port, new, old);

	up->port.status &= ~(UPSTAT_AUTORTS | UPSTAT_AUTOCTS | UPSTAT_AUTOXOFF);

	efr = serial_in(up, MOXA_PUART_EFR);
	efr &= ~(MOXA_PUART_EFR_AUTO_RTS | MOXA_PUART_EFR_AUTO_CTS);

	if (cflag & CRTSCTS) {
		efr |= (MOXA_PUART_EFR_AUTO_RTS | MOXA_PUART_EFR_AUTO_CTS);
		up->port.status |= (UPSTAT_AUTORTS | UPSTAT_AUTOCTS);
	}
	/* Set on-chip software flow control character */
	serial_out(up, MOXA_PUART_XON1, START_CHAR(tty));
	serial_out(up, MOXA_PUART_XON2, START_CHAR(tty));
	serial_out(up, MOXA_PUART_XOFF1, STOP_CHAR(tty));
	serial_out(up, MOXA_PUART_XOFF2, STOP_CHAR(tty));

	val = I_IXON(tty) ? MOXA_PUART_EFR_RX_FLOW_XON1_XOFF1 : MOXA_PUART_EFR_RX_FLOW_DISABLED;
	FIELD_MODIFY(MOXA_PUART_EFR_RX_FLOW_MASK, &efr, val);

	val = I_IXOFF(tty) ? MOXA_PUART_EFR_TX_FLOW_XON1_XOFF1 : MOXA_PUART_EFR_TX_FLOW_DISABLED;
	FIELD_MODIFY(MOXA_PUART_EFR_TX_FLOW_MASK, &efr, val);

	if (I_IXOFF(tty))
		up->port.status |= UPSTAT_AUTOXOFF;

	serial_out(up, MOXA_PUART_EFR, efr);
}

static int mxpcie8250_get_rxtrig(struct uart_port *port)
{
	return serial_port_in(port, MOXA_PUART_RTL);
}

static int mxpcie8250_set_rxtrig(struct uart_port *port, unsigned char bytes)
{
	struct mxpcie8250 *priv = dev_get_drvdata(port->dev);

	if (bytes > port->fifosize)
		return -EINVAL;

	serial_port_out(port, MOXA_PUART_RTL, bytes);
	priv->port[port->port_id].rx_trig_level = bytes;

	return 0;
}

static int mxpcie8250_startup(struct uart_port *port)
{
	struct mxpcie8250 *priv = dev_get_drvdata(port->dev);
	struct uart_8250_port *up = up_to_u8250p(port);
	int ret;

	ret = serial8250_do_startup(port);
	if (ret)
		return ret;

	/*
	 * The TX FIFO write pointer (w_ptr) and read pointer (r_ptr)
	 * are driven by different clocks: w_ptr uses the PCIe clock
	 * and r_ptr uses the UART clock. When TX FIFO flush is requested,
	 * w_ptr may be cleared before r_ptr, so the UART can still observe
	 * pending TX data.
	 *
	 * It is recommended to clear the FIFOs at least 5 times to ensure
	 * both pointers are reset.
	 */
	for (unsigned int i = 0; i < 5; ++i)
		serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);

	serial_out(up, MOXA_PUART_EFR, MOXA_PUART_EFR_ENHANCED);
	serial_out(up, MOXA_PUART_SFR, MOXA_PUART_SFR_950);

	serial_out(up, MOXA_PUART_TTL, MOXA_PUART_TX_TRIG_DEFAULT);
	serial_out(up, MOXA_PUART_RTL, priv->port[port->port_id].rx_trig_level);
	serial_out(up, MOXA_PUART_FCL, MOXA_PUART_RX_FLOW_LOW_DEFAULT);
	serial_out(up, MOXA_PUART_FCH, MOXA_PUART_RX_FLOW_HIGH_DEFAULT);

	return 0;
}

static void mxpcie8250_shutdown(struct uart_port *port)
{
	struct uart_8250_port *up = up_to_u8250p(port);

	serial_out(up, MOXA_PUART_EFR, 0);
	serial_out(up, MOXA_PUART_SFR, 0);

	serial8250_do_shutdown(port);
}

static void mxpcie8250_throttle(struct uart_port *port)
{
	guard(uart_port_lock_irqsave)(port);

	port->ops->stop_rx(port);
}

static void mxpcie8250_unthrottle(struct uart_port *port)
{
	struct uart_8250_port *up = up_to_u8250p(port);

	guard(uart_port_lock_irqsave)(port);

	up->ier |= UART_IER_RLSI | UART_IER_RDI;
	port->read_status_mask |= UART_LSR_DR;
	serial_out(up, UART_IER, up->ier);
}

static void mxpcie8250_rx_chars(struct uart_8250_port *up)
{
	struct uart_port *port = &up->port;
	struct tty_port *tport = &port->state->port;
	unsigned int count;
	u8 *buf;

	count = serial_in(up, MOXA_PUART_RX_FIFO_CNT);
	count = min(count, port->fifosize);
	count = tty_prepare_flip_string(tport, &buf, count);
	if (!count)
		return;

	for (unsigned int i = 0; i < count; ++i)
		buf[i] = serial_in(up, MOXA_PUART_RX_FIFO_MEM + i);

	port->icount.rx += count;
	tty_flip_buffer_push(tport);
}

static bool mxpcie8250_should_rx(struct uart_8250_port *up, u16 lsr)
{
	struct uart_port *port = &up->port;

	if (!(lsr & (UART_LSR_DR | UART_LSR_BI)))
		return false;

	if (!(port->status & (UPSTAT_AUTOCTS | UPSTAT_AUTORTS)))
		return true;
	if (lsr & (UART_LSR_FIFOE | UART_LSR_BRK_ERROR_BITS))
		return true;
	if (port->read_status_mask & UART_LSR_DR)
		return true;

	return false;
}

static void mxpcie8250_tx_chars(struct uart_8250_port *up)
{
	struct uart_port *port = &up->port;
	unsigned int offset = 0;
	unsigned char c;

	uart_port_tx_limited(port, c, port->fifosize - serial_in(up, MOXA_PUART_TX_FIFO_CNT),
			     true,
			     serial_out(up, MOXA_PUART_TX_FIFO_MEM + offset++, c),
			     ({}));
}

static int mxpcie8250_handle_irq(struct uart_port *port)
{
	struct uart_8250_port *up = up_to_u8250p(port);
	u16 lsr;
	u8 iir;

	iir = serial_in(up, UART_IIR);
	if (iir & UART_IIR_NO_INT)
		return 0;

	guard(uart_port_lock_check_sysrq_irqsave)(port);

	lsr = serial_lsr_in(up);
	if (mxpcie8250_should_rx(up, lsr)) {
		if (!(lsr & UART_LSR_BRK_ERROR_BITS))
			mxpcie8250_rx_chars(up);
		else
			lsr = serial8250_rx_chars(up, lsr);
	}

	serial8250_modem_status(up);

	if ((lsr & UART_LSR_THRE) && (up->ier & UART_IER_THRI))
		mxpcie8250_tx_chars(up);

	return 1;
}

static void mxpcie8250_software_break_ctl(struct uart_port *port, int break_state)
{
	struct uart_8250_port *up = up_to_u8250p(port);
	struct tty_struct *tty = port->state->port.tty;
	unsigned int baud, quot;
	u8 sfr, tx_byte = 0x01;

	guard(uart_port_lock_irqsave)(port);

	if (break_state == -1) {
		serial_out(up, UART_LCR, up->lcr | UART_LCR_DLAB);
		serial_dl_write(up, 0);
		serial_out(up, UART_LCR, up->lcr);

		serial_out(up, MOXA_PUART_TX_FIFO_MEM, tx_byte);

		sfr = serial_in(up, MOXA_PUART_SFR);
		serial_out(up, MOXA_PUART_SFR, sfr | MOXA_PUART_SFR_FORCE_TX);

		up->lcr |= UART_LCR_SBC;
		serial_out(up, UART_LCR, up->lcr);
	} else {
		up->lcr &= ~UART_LCR_SBC;
		serial_out(up, UART_LCR, up->lcr);

		sfr = serial_in(up, MOXA_PUART_SFR);
		serial_out(up, MOXA_PUART_SFR, sfr & ~MOXA_PUART_SFR_FORCE_TX);

		serial_out(up, UART_FCR, UART_FCR_CLEAR_XMIT);

		baud = tty_get_baud_rate(tty);
		quot = uart_get_divisor(port, baud);
		serial8250_do_set_divisor(port, baud, quot);
		serial_out(up, UART_LCR, up->lcr);
	}
}

static void mxpcie8250_break_ctl(struct uart_port *port, int break_state)
{
	if (port->rs485.flags & SER_RS485_ENABLED &&
	    !(port->rs485.flags & SER_RS485_MODE_RS422))
		mxpcie8250_software_break_ctl(port, break_state);
	else
		serial8250_do_break_ctl(port, break_state);
}

static void mxpcie8250_init_board(struct pci_dev *pdev, struct mxpcie8250 *priv)
{
	void __iomem *bar2_base = priv->bar2_base;
	unsigned short device = pdev->device;
	u8 cval;

	/* Initial terminator */
	if (device == PCI_DEVICE_ID_MOXA_CP114EL ||
	    device == PCI_DEVICE_ID_MOXA_CP118EL_A) {
		iowrite8(0xff, bar2_base + MOXA_GPIO_DIRECTION);
		iowrite8(0x00, bar2_base + MOXA_GPIO_OUTPUT);
	}
	/*
	 * Enable hardware buffer to prevent break signal output when system boots up.
	 * This hardware buffer is only supported on Mini PCIe series.
	 */
	if (mxpcie8250_is_mini_pcie(device)) {
		/* Set GPIO direction */
		cval = ioread8(bar2_base + MOXA_GPIO_DIRECTION);
		cval |= MOXA_GPIO_PIN2;
		iowrite8(cval, bar2_base + MOXA_GPIO_DIRECTION);
		/* Enable low GPIO */
		cval = ioread8(bar2_base + MOXA_GPIO_OUTPUT);
		cval &= ~MOXA_GPIO_PIN2;
		iowrite8(cval, bar2_base + MOXA_GPIO_OUTPUT);
	}
}

static void mxpcie8250_setup_port(struct pci_dev *pdev,
				  struct mxpcie8250 *priv,
				  struct uart_8250_port *up,
				  int idx)
{
	unsigned short device = pdev->device;
	int offset = idx * MOXA_PUART_OFFSET;
	u8 init_mode = MOXA_UIR_RS232;

	if (priv->supp_rs & MOXA_SUPP_RS485) {
		up->port.rs485_config = mxpcie8250_rs485_config;
		up->port.rs485_supported = mxpcie8250_rs485_supported;
	}
	if (!(priv->supp_rs & MOXA_SUPP_RS232)) {
		init_mode = MOXA_UIR_RS422;
		up->port.rs485.flags = SER_RS485_ENABLED | SER_RS485_MODE_RS422;
	}
	mxpcie8250_set_interface(priv, idx, init_mode);

	if (idx == 3 &&
	    (device == PCI_DEVICE_ID_MOXA_CP104EL_A ||
	     device == PCI_DEVICE_ID_MOXA_CP114EL   ||
	     device == PCI_DEVICE_ID_MOXA_CP134EL_A))
		offset = 7 * MOXA_PUART_OFFSET;

	up->port.mapbase = pci_resource_start(pdev, FL_BASE1) + offset;
	up->port.membase = pcim_iomap_table(pdev)[FL_BASE1] + offset;
}

static int mxpcie8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	struct device *dev = &pdev->dev;
	struct uart_8250_port up = {};
	struct mxpcie8250 *priv;
	unsigned short device = pdev->device;
	unsigned int num_ports;
	int ret;

	ret = pcim_enable_device(pdev);
	if (ret)
		return ret;

	num_ports = mxpcie8250_get_nports(device);

	priv = devm_kzalloc(dev, struct_size(priv, port, num_ports), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->num_ports = num_ports;
	priv->supp_rs = mxpcie8250_get_supp_rs(device);

	priv->bar1_base = pcim_iomap(pdev, FL_BASE1, 0);
	if (!priv->bar1_base)
		return -ENOMEM;

	priv->bar2_base = pcim_iomap(pdev, FL_BASE2, 0);
	if (!priv->bar2_base)
		return -ENOMEM;

	mxpcie8250_init_board(pdev, priv);

	up.port.dev = dev;
	up.port.irq = pdev->irq;
	up.port.uartclk = MOXA_PUART_BASE_BAUD * 16;
	up.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ | UPF_FIXED_TYPE;
	up.port.type = PORT_MUEX50;

	up.port.iotype = UPIO_MEM;
	up.port.iobase = 0;
	up.port.regshift = 0;

	up.port.set_termios = mxpcie8250_set_termios;
	up.port.get_rxtrig = mxpcie8250_get_rxtrig;
	up.port.set_rxtrig = mxpcie8250_set_rxtrig;
	up.port.startup = mxpcie8250_startup;
	up.port.shutdown = mxpcie8250_shutdown;
	up.port.throttle = mxpcie8250_throttle;
	up.port.unthrottle = mxpcie8250_unthrottle;
	up.port.handle_irq = mxpcie8250_handle_irq;
	up.port.break_ctl = mxpcie8250_break_ctl;

	for (unsigned int i = 0; i < num_ports; i++) {
		mxpcie8250_setup_port(pdev, priv, &up, i);

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

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

	return 0;
}

static void mxpcie8250_remove(struct pci_dev *pdev)
{
	struct mxpcie8250 *priv = pci_get_drvdata(pdev);

	for (unsigned int i = 0; i < priv->num_ports; i++)
		serial8250_unregister_port(priv->port[i].line);
}

static const struct pci_device_id mxpcie8250_pci_ids[] = {
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102E) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102EL) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL_A) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP112N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114EL) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_A) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_B) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL_A) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118E_A_I) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132EL) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134EL_A) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134N) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP138E_A) },
	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL_A) },
	{ }
};
MODULE_DEVICE_TABLE(pci, mxpcie8250_pci_ids);

static struct pci_driver mxpcie8250_pci_driver = {
	.name		= "8250_mxpcie",
	.id_table	= mxpcie8250_pci_ids,
	.probe		= mxpcie8250_probe,
	.remove		= mxpcie8250_remove,
};
module_pci_driver(mxpcie8250_pci_driver);

MODULE_AUTHOR("Moxa Inc.");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Moxa PCIe Multiport Serial Device Driver");