diff options
Diffstat (limited to 'board/pcippc2/pcippc2_fpga.c')
-rwxr-xr-x | board/pcippc2/pcippc2_fpga.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/board/pcippc2/pcippc2_fpga.c b/board/pcippc2/pcippc2_fpga.c new file mode 100755 index 0000000..7f6739d --- /dev/null +++ b/board/pcippc2/pcippc2_fpga.c @@ -0,0 +1,87 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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(); +} |