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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.
*/
/* 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"
#include "hwaccess.h"
static uint8_t *nicintel_bar;
static uint8_t *nicintel_control_bar;
const struct dev_entry nics_intel[] = {
{PCI_VENDOR_ID_INTEL, 0x1209, NT, "Intel", "8255xER/82551IT Fast Ethernet Controller"},
{PCI_VENDOR_ID_INTEL, 0x1229, OK, "Intel", "82557/8/9/0/1 Ethernet Pro 100"},
{0},
};
/* 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 NICINTEL_CONTROL_MEMMAP_SIZE 0x10
#define CSR_FCR 0x0c
static void nicintel_chip_writeb(const struct flashctx *flash, uint8_t val,
chipaddr addr);
static uint8_t nicintel_chip_readb(const struct flashctx *flash,
const chipaddr addr);
static const struct par_master par_master_nicintel = {
.chip_readb = nicintel_chip_readb,
.chip_readw = fallback_chip_readw,
.chip_readl = fallback_chip_readl,
.chip_readn = fallback_chip_readn,
.chip_writeb = nicintel_chip_writeb,
.chip_writew = fallback_chip_writew,
.chip_writel = fallback_chip_writel,
.chip_writen = fallback_chip_writen,
};
int nicintel_init(void)
{
struct pci_dev *dev = NULL;
uintptr_t addr;
/* Needed only for PCI accesses on some platforms.
* FIXME: Refactor that into get_mem_perms/rget_io_perms/get_pci_perms?
*/
if (rget_io_perms())
return 1;
/* FIXME: BAR2 is not available if the device uses the CardBus function. */
dev = pcidev_init(nics_intel, PCI_BASE_ADDRESS_2);
if (!dev)
return 1;
addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_2);
if (!addr)
return 1;
nicintel_bar = rphysmap("Intel NIC flash", addr, NICINTEL_MEMMAP_SIZE);
if (nicintel_bar == ERROR_PTR)
return 1;
addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_0);
if (!addr)
return 1;
nicintel_control_bar = rphysmap("Intel NIC control/status reg", addr, NICINTEL_CONTROL_MEMMAP_SIZE);
if (nicintel_control_bar == ERROR_PTR)
return 1;
/* 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);
max_rom_decode.parallel = NICINTEL_MEMMAP_SIZE;
register_par_master(&par_master_nicintel, BUS_PARALLEL);
return 0;
}
static void nicintel_chip_writeb(const struct flashctx *flash, uint8_t val,
chipaddr addr)
{
pci_mmio_writeb(val, nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
}
static uint8_t nicintel_chip_readb(const struct flashctx *flash,
const chipaddr addr)
{
return pci_mmio_readb(nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
}
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