Staging: Add the Meilhaus ME-IDS driver package

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>

1 files changed, 137 insertions, 0 deletions

diff --git a/drivers/staging/meilhaus/mefirmware.c b/drivers/staging/meilhaus/mefirmware.c
new file mode 100644
index 00000000000..c07d202e8cb
--- /dev/null
+++ b/drivers/staging/meilhaus/mefirmware.c
@@ -0,0 +1,137 @@
+/**
+ * @file mefirmware.c
+ *
+ * @brief Implements the firmware handling.
+ * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
+ * @author Guenter Gebhardt
+ * @author Krzysztof Gantzke	(k.gantzke@meilhaus.de)
+ */
+
+/***************************************************************************
+ *   Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)     *
+ *   Copyright (C) 2007 by Krzysztof Gantzke k.gantzke@meilhaus.de         *
+ *                                                                         *
+ *   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.             *
+ ***************************************************************************/
+
+#ifndef __KERNEL__
+# define __KERNEL__
+#endif
+
+#ifndef KBUILD_MODNAME
+#  define KBUILD_MODNAME KBUILD_STR(mefirmware)
+#endif
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+
+#include <linux/firmware.h>
+
+#include "meplx_reg.h"
+#include "medebug.h"
+
+#include "mefirmware.h"
+
+int me_xilinx_download(unsigned long register_base_control,
+		       unsigned long register_base_data,
+		       struct device *dev, const char *firmware_name)
+{
+	int err = ME_ERRNO_FIRMWARE;
+	uint32_t value = 0;
+	int idx = 0;
+
+	const struct firmware *fw;
+
+	PDEBUG("executed.\n");
+
+	if (!firmware_name) {
+		PERROR("Request for firmware failed. No name provided. \n");
+		return err;
+	}
+
+	PINFO("Request '%s' firmware.\n", firmware_name);
+	err = request_firmware(&fw, firmware_name, dev);
+
+	if (err) {
+		PERROR("Request for firmware failed.\n");
+		return err;
+	}
+	// Set PLX local interrupt 2 polarity to high.
+	// Interrupt is thrown by init pin of xilinx.
+	outl(PLX_INTCSR_LOCAL_INT2_POL, register_base_control + PLX_INTCSR);
+
+	// Set /CS and /WRITE of the Xilinx
+	value = inl(register_base_control + PLX_ICR);
+	value |= ME_FIRMWARE_CS_WRITE;
+	outl(value, register_base_control + PLX_ICR);
+
+	// Init Xilinx with CS1
+	inl(register_base_data + ME_XILINX_CS1_REG);
+
+	// Wait for init to complete
+	udelay(20);
+
+	// Checkl /INIT pin
+	if (!
+	    (inl(register_base_control + PLX_INTCSR) &
+	     PLX_INTCSR_LOCAL_INT2_STATE)) {
+		PERROR("Can't init Xilinx.\n");
+		release_firmware(fw);
+		return -EIO;
+	}
+	// Reset /CS and /WRITE of the Xilinx
+	value = inl(register_base_control + PLX_ICR);
+	value &= ~ME_FIRMWARE_CS_WRITE;
+	outl(value, register_base_control + PLX_ICR);
+
+	// Download Xilinx firmware
+	udelay(10);
+
+	for (idx = 0; idx < fw->size; idx++) {
+		outl(fw->data[idx], register_base_data);
+#ifdef ME6000_v2_4
+///     This checking only for board's version 2.4
+		// Check if BUSY flag is set (low = ready, high = busy)
+		if (inl(register_base_control + PLX_ICR) &
+		    ME_FIRMWARE_BUSY_FLAG) {
+			PERROR("Xilinx is still busy (idx = %d)\n", idx);
+			release_firmware(fw);
+			return -EIO;
+		}
+#endif //ME6000_v2_4
+	}
+	PDEBUG("Download finished. %d bytes written to PLX.\n", idx);
+
+	// If done flag is high download was successful
+	if (inl(register_base_control + PLX_ICR) & ME_FIRMWARE_DONE_FLAG) {
+		PDEBUG("SUCCESS. Done flag is set.\n");
+	} else {
+		PERROR("FAILURE. DONE flag is not set.\n");
+		release_firmware(fw);
+		return -EIO;
+	}
+
+	// Set /CS and /WRITE
+	value = inl(register_base_control + PLX_ICR);
+	value |= ME_FIRMWARE_CS_WRITE;
+	outl(value, register_base_control + PLX_ICR);
+
+	PDEBUG("Enable interrupts on the PCI interface.\n");
+	outl(ME_PLX_PCI_ACTIVATE, register_base_control + PLX_INTCSR);
+	release_firmware(fw);
+
+	return 0;
+}