3fedd14818
Originally written by Guenter Gebhardt <g.gebhardt@meilhaus.de> and Krzysztof Gantzke <k.gantzke@meilhaus.de> This is the drv/lnx/mod directory of ME-IDS 1.2.9 tarball with some files from drv/lnx/include. Signed-off-by: David Kiliani <mail@davidkiliani.de> Cc: Guenter Gebhardt <g.gebhardt@meilhaus.de> Cc: Krzysztof Gantzke <k.gantzke@meilhaus.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/**
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* @file mefirmware.c
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*
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* @brief Implements the firmware handling.
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* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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* @author Guenter Gebhardt
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* @author Krzysztof Gantzke (k.gantzke@meilhaus.de)
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*/
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/***************************************************************************
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* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) *
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* Copyright (C) 2007 by Krzysztof Gantzke k.gantzke@meilhaus.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef __KERNEL__
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# define __KERNEL__
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#endif
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#ifndef KBUILD_MODNAME
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# define KBUILD_MODNAME KBUILD_STR(mefirmware)
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#endif
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/firmware.h>
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#include "meplx_reg.h"
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#include "medebug.h"
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#include "mefirmware.h"
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int me_xilinx_download(unsigned long register_base_control,
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unsigned long register_base_data,
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struct device *dev, const char *firmware_name)
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{
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int err = ME_ERRNO_FIRMWARE;
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uint32_t value = 0;
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int idx = 0;
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const struct firmware *fw;
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PDEBUG("executed.\n");
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if (!firmware_name) {
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PERROR("Request for firmware failed. No name provided. \n");
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return err;
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}
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PINFO("Request '%s' firmware.\n", firmware_name);
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err = request_firmware(&fw, firmware_name, dev);
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if (err) {
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PERROR("Request for firmware failed.\n");
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return err;
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}
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// Set PLX local interrupt 2 polarity to high.
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// Interrupt is thrown by init pin of xilinx.
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outl(PLX_INTCSR_LOCAL_INT2_POL, register_base_control + PLX_INTCSR);
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// Set /CS and /WRITE of the Xilinx
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value = inl(register_base_control + PLX_ICR);
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value |= ME_FIRMWARE_CS_WRITE;
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outl(value, register_base_control + PLX_ICR);
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// Init Xilinx with CS1
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inl(register_base_data + ME_XILINX_CS1_REG);
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// Wait for init to complete
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udelay(20);
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// Checkl /INIT pin
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if (!
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(inl(register_base_control + PLX_INTCSR) &
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PLX_INTCSR_LOCAL_INT2_STATE)) {
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PERROR("Can't init Xilinx.\n");
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release_firmware(fw);
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return -EIO;
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}
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// Reset /CS and /WRITE of the Xilinx
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value = inl(register_base_control + PLX_ICR);
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value &= ~ME_FIRMWARE_CS_WRITE;
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outl(value, register_base_control + PLX_ICR);
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// Download Xilinx firmware
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udelay(10);
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for (idx = 0; idx < fw->size; idx++) {
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outl(fw->data[idx], register_base_data);
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#ifdef ME6000_v2_4
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/// This checking only for board's version 2.4
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// Check if BUSY flag is set (low = ready, high = busy)
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if (inl(register_base_control + PLX_ICR) &
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ME_FIRMWARE_BUSY_FLAG) {
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PERROR("Xilinx is still busy (idx = %d)\n", idx);
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release_firmware(fw);
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return -EIO;
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}
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#endif //ME6000_v2_4
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}
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PDEBUG("Download finished. %d bytes written to PLX.\n", idx);
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// If done flag is high download was successful
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if (inl(register_base_control + PLX_ICR) & ME_FIRMWARE_DONE_FLAG) {
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PDEBUG("SUCCESS. Done flag is set.\n");
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} else {
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PERROR("FAILURE. DONE flag is not set.\n");
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release_firmware(fw);
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return -EIO;
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}
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// Set /CS and /WRITE
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value = inl(register_base_control + PLX_ICR);
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value |= ME_FIRMWARE_CS_WRITE;
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outl(value, register_base_control + PLX_ICR);
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PDEBUG("Enable interrupts on the PCI interface.\n");
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outl(ME_PLX_PCI_ACTIVATE, register_base_control + PLX_INTCSR);
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release_firmware(fw);
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return 0;
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}
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