pcippc2_fpga.c

U BOOT源码

/*
 * (C) Copyright 2002
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>
#include <common.h>
#include <asm/io.h>

#include "pci.h"

#include "hardware.h"
#include "pcippc2.h"

u32		pcippc2_fpga0_phys;
u32		pcippc2_fpga1_phys;

void pcippc2_fpga_init (void)
{
  pci_dev_t		bdf = pci_find_device(FPGA_VENDOR_ID, FPGA_DEVICE_ID, 0);
  unsigned int		addr;
  u16			cmd;

  if (bdf == -1)
  {
    puts("Unable to find FPGA !\n");
    hang();
  }

  pci_read_config_word(bdf, PCI_COMMAND, &cmd);
  if ((cmd & (PCI_COMMAND_MEMORY | PCI_COMMAND_IO)) != (PCI_COMMAND_MEMORY | PCI_COMMAND_IO))
  {
    puts("FPGA is not configured !\n");
    hang();
  }

  pci_read_config_dword(bdf, PCI_BASE_ADDRESS_0, &addr);
  if (addr & 0x1)
  {
      /* IO space
       */
    pcippc2_fpga0_phys = pci_io_to_phys(bdf, addr & 0xfffffffc);
  }
  else
  {
      /* Memory space
       */
    pcippc2_fpga0_phys = pci_mem_to_phys(bdf, addr & 0xfffffff0);
  }

  pci_read_config_dword(bdf, PCI_BASE_ADDRESS_1, &addr);
  if (addr & 0x1)
  {
      /* IO space
       */
    pcippc2_fpga1_phys = pci_io_to_phys(bdf, addr & 0xfffffffc);
  }
  else
  {
      /* Memory space
       */
    pcippc2_fpga1_phys = pci_mem_to_phys(bdf, addr & 0xfffffff0);
  }

    /* Interrupts are not used
     */
  out32(FPGA(INT, INTR_MASK), 0xffffffff);
  iobarrier_rw();
}