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-rw-r--r--package/rt2x00/src/rt2x00firmware.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/package/rt2x00/src/rt2x00firmware.c b/package/rt2x00/src/rt2x00firmware.c
new file mode 100644
index 000000000..3aef1073d
--- /dev/null
+++ b/package/rt2x00/src/rt2x00firmware.c
@@ -0,0 +1,124 @@
+/*
+ Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
+ <http://rt2x00.serialmonkey.com>
+
+ 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.
+ */
+
+/*
+ Module: rt2x00lib
+ Abstract: rt2x00 firmware loading specific routines.
+ Supported chipsets: rt2561, rt2561s, rt2661, rt2571W & rt2671.
+ */
+
+/*
+ * Set enviroment defines for rt2x00.h
+ */
+#define DRV_NAME "rt2x00lib"
+
+#include <linux/crc-itu-t.h>
+#include <linux/firmware.h>
+
+#include "rt2x00.h"
+#include "rt2x00firmware.h"
+
+static void rt2x00lib_load_firmware_continued(const struct firmware *fw,
+ void *context)
+{
+ struct rt2x00_dev *rt2x00dev = context;
+ u16 crc;
+ u16 tmp;
+
+ if (!fw || !fw->size || !fw->data) {
+ ERROR(rt2x00dev, "Failed to read Firmware.\n");
+ goto exit_failed;
+ }
+
+ /*
+ * Validate the firmware using 16 bit CRC.
+ * The last 2 bytes of the firmware are the CRC
+ * so substract those 2 bytes from the CRC checksum,
+ * and set those 2 bytes to 0 when calculating CRC.
+ */
+ tmp = 0;
+ crc = crc_itu_t(0, fw->data, fw->size - 2);
+ crc = crc_itu_t(crc, (u8*)&tmp, 2);
+
+ if (crc != (fw->data[fw->size - 2] << 8 | fw->data[fw->size - 1])) {
+ ERROR(rt2x00dev, "Firmware CRC error.\n");
+ goto exit_failed;
+ }
+
+ /*
+ * Send firmware to the device.
+ */
+ if (rt2x00dev->ops->lib->load_firmware(rt2x00dev, fw->data, fw->size))
+ goto exit_failed;
+
+ INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
+ fw->data[fw->size - 4], fw->data[fw->size - 3]);
+
+ __set_bit(FIRMWARE_LOADED, &rt2x00dev->flags);
+
+ return;
+
+exit_failed:
+ rt2x00debug_deregister(rt2x00dev);
+
+ __set_bit(FIRMWARE_FAILED, &rt2x00dev->flags);
+}
+
+int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
+{
+ char *fw_name;
+ int status = -EINVAL;
+
+ /*
+ * Read correct firmware from harddisk.
+ */
+ fw_name = rt2x00dev->ops->lib->get_fw_name(rt2x00dev);
+ BUG_ON(fw_name == NULL);
+
+ INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name);
+
+ status = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
+ fw_name, rt2x00dev->device, rt2x00dev,
+ &rt2x00lib_load_firmware_continued);
+
+ if (status)
+ ERROR(rt2x00dev, "Failed to request Firmware.\n");
+
+ return status;
+}
+
+int rt2x00lib_load_firmware_wait(struct rt2x00_dev *rt2x00dev)
+{
+ unsigned int i;
+
+ if (!test_bit(FIRMWARE_REQUIRED, &rt2x00dev->flags))
+ return 0;
+
+ for (i = 0; i < 150; i++) {
+ if (test_bit(FIRMWARE_FAILED, &rt2x00dev->flags))
+ return -EIO;
+ if (test_bit(FIRMWARE_LOADED, &rt2x00dev->flags))
+ return 0;
+ msleep(20);
+ }
+
+ ERROR(rt2x00dev, "Firmware loading timed out.\n");
+ return -ETIMEDOUT;
+}