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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2011 Carl-Daniel Hailfinger
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Datasheet: http://download.intel.com/design/network/datashts/82559_Fast_Ethernet_Multifunction_PCI_Cardbus_Controller_Datasheet.pdf */
#include <stdlib.h>
#include "flash.h"
#include "programmer.h"
uint8_t *nicintel_bar;
uint8_t *nicintel_control_bar;
const struct pcidev_status nics_intel[] = {
{PCI_VENDOR_ID_INTEL, 0x1209, NT, "Intel", "8255xER/82551IT Fast Ethernet Controller"},
{PCI_VENDOR_ID_INTEL, 0x1229, NT, "Intel", "82557/8/9/0/1 Ethernet Pro 100"},
{},
};
/* Arbitrary limit, taken from the datasheet I just had lying around.
* 128 kByte on the 82559 device. Or not. Depends on whom you ask.
*/
#define NICINTEL_MEMMAP_SIZE (128 * 1024)
#define NICINTEL_MEMMAP_MASK (NICINTEL_MEMMAP_SIZE - 1)
#define CSR_FCR 0x0c
int nicintel_init(void)
{
uintptr_t addr;
/* Needed only for PCI accesses on some platforms.
* FIXME: Refactor that into get_mem_perms/get_io_perms/get_pci_perms?
*/
get_io_perms();
/* No need to check for errors, pcidev_init() will not return in case
* of errors.
* FIXME: BAR2 is not available if the device uses the CardBus function.
*/
addr = pcidev_init(PCI_BASE_ADDRESS_2, nics_intel);
nicintel_bar = physmap("Intel NIC flash", addr, NICINTEL_MEMMAP_SIZE);
if (nicintel_bar == ERROR_PTR)
goto error_out;
/* FIXME: Using pcidev_dev _will_ cause pretty explosions in the future. */
addr = pcidev_validate(pcidev_dev, PCI_BASE_ADDRESS_0, nics_intel);
/* FIXME: This is not an aligned mapping. Use 4k? */
nicintel_control_bar = physmap("Intel NIC control/status reg", addr, 0x10);
if (nicintel_control_bar == ERROR_PTR)
goto error_out;
/* FIXME: This register is pretty undocumented in all publicly available
* documentation from Intel. Let me quote the complete info we have:
* "Flash Control Register: The Flash Control register allows the CPU to
* enable writes to an external Flash. The Flash Control Register is a
* 32-bit field that allows access to an external Flash device."
* Ah yes, we also know where it is, but we have absolutely _no_ idea
* what we should do with it. Write 0x0001 because we have nothing
* better to do with our time.
*/
pci_rmmio_writew(0x0001, nicintel_control_bar + CSR_FCR);
buses_supported = CHIP_BUSTYPE_PARALLEL;
max_rom_decode.parallel = NICINTEL_MEMMAP_SIZE;
return 0;
error_out:
pci_cleanup(pacc);
release_io_perms();
return 1;
}
int nicintel_shutdown(void)
{
physunmap(nicintel_bar, NICINTEL_MEMMAP_SIZE);
pci_cleanup(pacc);
release_io_perms();
return 0;
}
void nicintel_chip_writeb(uint8_t val, chipaddr addr)
{
pci_mmio_writeb(val, nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
}
uint8_t nicintel_chip_readb(const chipaddr addr)
{
return pci_mmio_readb(nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
}
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