Intel NIC with parallel flash support

Tested-by: Maciej Pijanka <maciej.pijanka@gmail.com>

Corresponding to flashrom svn r1297.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Tested-by: Anton Kochkov <anton.kochkov@gmail.com>
Acked-by: Anton Kochkov <anton.kochkov@gmail.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/nicintel.c b/nicintel.c
new file mode 100644
index 000000000..3d53ec85e
--- /dev/null
+++ b/nicintel.c
@@ -0,0 +1,109 @@
+/*
+ * 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));
+}