162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * 8250 PCI library. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 2001 Russell King, All Rights Reserved. 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci#include <linux/errno.h> 862306a36Sopenharmony_ci#include <linux/ioport.h> 962306a36Sopenharmony_ci#include <linux/pci.h> 1062306a36Sopenharmony_ci#include <linux/types.h> 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include "8250.h" 1362306a36Sopenharmony_ci#include "8250_pcilib.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ciint serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port, 1662306a36Sopenharmony_ci u8 bar, unsigned int offset, int regshift) 1762306a36Sopenharmony_ci{ 1862306a36Sopenharmony_ci if (bar >= PCI_STD_NUM_BARS) 1962306a36Sopenharmony_ci return -EINVAL; 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci if (pci_resource_flags(dev, bar) & IORESOURCE_MEM) { 2262306a36Sopenharmony_ci if (!pcim_iomap(dev, bar, 0) && !pcim_iomap_table(dev)) 2362306a36Sopenharmony_ci return -ENOMEM; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci port->port.iotype = UPIO_MEM; 2662306a36Sopenharmony_ci port->port.iobase = 0; 2762306a36Sopenharmony_ci port->port.mapbase = pci_resource_start(dev, bar) + offset; 2862306a36Sopenharmony_ci port->port.membase = pcim_iomap_table(dev)[bar] + offset; 2962306a36Sopenharmony_ci port->port.regshift = regshift; 3062306a36Sopenharmony_ci } else { 3162306a36Sopenharmony_ci port->port.iotype = UPIO_PORT; 3262306a36Sopenharmony_ci port->port.iobase = pci_resource_start(dev, bar) + offset; 3362306a36Sopenharmony_ci port->port.mapbase = 0; 3462306a36Sopenharmony_ci port->port.membase = NULL; 3562306a36Sopenharmony_ci port->port.regshift = 0; 3662306a36Sopenharmony_ci } 3762306a36Sopenharmony_ci return 0; 3862306a36Sopenharmony_ci} 3962306a36Sopenharmony_ciEXPORT_SYMBOL_NS_GPL(serial8250_pci_setup_port, SERIAL_8250_PCI); 4062306a36Sopenharmony_ciMODULE_LICENSE("GPL"); 41