/* * Copyright (c) 2008-2009 Atheros Communications Inc. * * 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 * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/usb.h> #include <net/bluetooth/bluetooth.h> #define VERSION "1.0" #define ATH3K_FIRMWARE "ath3k-1.fw" #define ATH3K_DNLOAD 0x01 #define ATH3K_GETSTATE 0x05 #define ATH3K_SET_NORMAL_MODE 0x07 #define ATH3K_GETVERSION 0x09 #define USB_REG_SWITCH_VID_PID 0x0a #define ATH3K_MODE_MASK 0x3F #define ATH3K_NORMAL_MODE 0x0E #define ATH3K_PATCH_UPDATE 0x80 #define ATH3K_SYSCFG_UPDATE 0x40 #define ATH3K_XTAL_FREQ_26M 0x00 #define ATH3K_XTAL_FREQ_40M 0x01 #define ATH3K_XTAL_FREQ_19P2 0x02 #define ATH3K_NAME_LEN 0xFF struct ath3k_version { unsigned int rom_version; unsigned int build_version; unsigned int ram_version; unsigned char ref_clock; unsigned char reserved[0x07]; }; static struct usb_device_id ath3k_table[] = { /* Atheros AR3011 */ { USB_DEVICE(0x0CF3, 0x3000) }, /* Atheros AR3011 with sflash firmware*/ { USB_DEVICE(0x0CF3, 0x3002) }, { USB_DEVICE(0x13d3, 0x3304) }, { USB_DEVICE(0x0930, 0x0215) }, { USB_DEVICE(0x0489, 0xE03D) }, /* Atheros AR9285 Malbec with sflash firmware */ { USB_DEVICE(0x03F0, 0x311D) }, /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0CF3, 0x3004) }, { USB_DEVICE(0x13d3, 0x3375) }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xE02C) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, ath3k_table); #define BTUSB_ATH3012 0x80 /* This table is to load patch and sysconfig files * for AR3012 */ static struct usb_device_id ath3k_blist_tbl[] = { /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { } /* Terminating entry */ }; #define USB_REQ_DFU_DNLOAD 1 #define BULK_SIZE 4096 #define FW_HDR_SIZE 20 static int ath3k_load_firmware(struct usb_device *udev, const struct firmware *firmware) { u8 *send_buf; int err, pipe, len, size, sent = 0; int count = firmware->size; BT_DBG("udev %p", udev); pipe = usb_sndctrlpipe(udev, 0); send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); if (!send_buf) { BT_ERR("Can't allocate memory chunk for firmware"); return -ENOMEM; } memcpy(send_buf, firmware->data, 20); if ((err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR, 0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { BT_ERR("Can't change to loading configuration err"); goto error; } sent += 20; count -= 20; while (count) { size = min_t(uint, count, BULK_SIZE); pipe = usb_sndbulkpipe(udev, 0x02); memcpy(send_buf, firmware->data + sent, size); err = usb_bulk_msg(udev, pipe, send_buf, size, &len, 3000); if (err || (len != size)) { BT_ERR("Error in firmware loading err = %d," "len = %d, size = %d", err, len, size); goto error; } sent += size; count -= size; } error: kfree(send_buf); return err; } static int ath3k_get_state(struct usb_device *udev, unsigned char *state) { int pipe = 0; pipe = usb_rcvctrlpipe(udev, 0); return usb_control_msg(udev, pipe, ATH3K_GETSTATE, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, state, 0x01, USB_CTRL_SET_TIMEOUT); } static int ath3k_get_version(struct usb_device *udev, struct ath3k_version *version) { int pipe = 0; pipe = usb_rcvctrlpipe(udev, 0); return usb_control_msg(udev, pipe, ATH3K_GETVERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version, sizeof(struct ath3k_version), USB_CTRL_SET_TIMEOUT); } static int ath3k_load_fwfile(struct usb_device *udev, const struct firmware *firmware) { u8 *send_buf; int err, pipe, len, size, count, sent = 0; int ret; count = firmware->size; send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); if (!send_buf) { BT_ERR("Can't allocate memory chunk for firmware"); return -ENOMEM; } size = min_t(uint, count, FW_HDR_SIZE); memcpy(send_buf, firmware->data, size); pipe = usb_sndctrlpipe(udev, 0); ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD, USB_TYPE_VENDOR, 0, 0, send_buf, size, USB_CTRL_SET_TIMEOUT); if (ret < 0) { BT_ERR("Can't change to loading configuration err"); kfree(send_buf); return ret; } sent += size; count -= size; while (count) { size = min_t(uint, count, BULK_SIZE); pipe = usb_sndbulkpipe(udev, 0x02); memcpy(send_buf, firmware->data + sent, size); err = usb_bulk_msg(udev, pipe, send_buf, size, &len, 3000); if (err || (len != size)) { BT_ERR("Error in firmware loading err = %d," "len = %d, size = %d", err, len, size); kfree(send_buf); return err; } sent += size; count -= size; } kfree(send_buf); return 0; } static int ath3k_switch_pid(struct usb_device *udev) { int pipe = 0; pipe = usb_sndctrlpipe(udev, 0); return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID, USB_TYPE_VENDOR, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); } static int ath3k_set_normal_mode(struct usb_device *udev) { unsigned char fw_state; int pipe = 0, ret; ret = ath3k_get_state(udev, &fw_state); if (ret < 0) { BT_ERR("Can't get state to change to normal mode err"); return ret; } if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) { BT_DBG("firmware was already in normal mode"); return 0; } pipe = usb_sndctrlpipe(udev, 0); return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE, USB_TYPE_VENDOR, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); } static int ath3k_load_patch(struct usb_device *udev) { unsigned char fw_state; char filename[ATH3K_NAME_LEN] = {0}; const struct firmware *firmware; struct ath3k_version fw_version, pt_version; int ret; ret = ath3k_get_state(udev, &fw_state); if (ret < 0) { BT_ERR("Can't get state to change to load ram patch err"); return ret; } if (fw_state & ATH3K_PATCH_UPDATE) { BT_DBG("Patch was already downloaded"); return 0; } ret = ath3k_get_version(udev, &fw_version); if (ret < 0) { BT_ERR("Can't get version to change to load ram patch err"); return ret; } snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu", fw_version.rom_version); ret = request_firmware(&firmware, filename, &udev->dev); if (ret < 0) { BT_ERR("Patch file not found %s", filename); return ret; } pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8); pt_version.build_version = *(int *) (firmware->data + firmware->size - 4); if ((pt_version.rom_version != fw_version.rom_version) || (pt_version.build_version <= fw_version.build_version)) { BT_ERR("Patch file version did not match with firmware"); release_firmware(firmware); return -EINVAL; } ret = ath3k_load_fwfile(udev, firmware); release_firmware(firmware); return ret; } static int ath3k_load_syscfg(struct usb_device *udev) { unsigned char fw_state; char filename[ATH3K_NAME_LEN] = {0}; const struct firmware *firmware; struct ath3k_version fw_version; int clk_value, ret; ret = ath3k_get_state(udev, &fw_state); if (ret < 0) { BT_ERR("Can't get state to change to load configration err"); return -EBUSY; } ret = ath3k_get_version(udev, &fw_version); if (ret < 0) { BT_ERR("Can't get version to change to load ram patch err"); return ret; } switch (fw_version.ref_clock) { case ATH3K_XTAL_FREQ_26M: clk_value = 26; break; case ATH3K_XTAL_FREQ_40M: clk_value = 40; break; case ATH3K_XTAL_FREQ_19P2: clk_value = 19; break; default: clk_value = 0; break; } snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s", fw_version.rom_version, clk_value, ".dfu"); ret = request_firmware(&firmware, filename, &udev->dev); if (ret < 0) { BT_ERR("Configuration file not found %s", filename); return ret; } ret = ath3k_load_fwfile(udev, firmware); release_firmware(firmware); return ret; } static int ath3k_probe(struct usb_interface *intf, const struct usb_device_id *id) { const struct firmware *firmware; struct usb_device *udev = interface_to_usbdev(intf); int ret; BT_DBG("intf %p id %p", intf, id); if (intf->cur_altsetting->desc.bInterfaceNumber != 0) return -ENODEV; /* match device ID in ath3k blacklist table */ if (!id->driver_info) { const struct usb_device_id *match; match = usb_match_id(intf, ath3k_blist_tbl); if (match) id = match; } /* load patch and sysconfig files for AR3012 */ if (id->driver_info & BTUSB_ATH3012) { /* New firmware with patch and sysconfig files already loaded */ if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001) return -ENODEV; ret = ath3k_load_patch(udev); if (ret < 0) { BT_ERR("Loading patch file failed"); return ret; } ret = ath3k_load_syscfg(udev); if (ret < 0) { BT_ERR("Loading sysconfig file failed"); return ret; } ret = ath3k_set_normal_mode(udev); if (ret < 0) { BT_ERR("Set normal mode failed"); return ret; } ath3k_switch_pid(udev); return 0; } ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev); if (ret < 0) { if (ret == -ENOENT) BT_ERR("Firmware file \"%s\" not found", ATH3K_FIRMWARE); else BT_ERR("Firmware file \"%s\" request failed (err=%d)", ATH3K_FIRMWARE, ret); return ret; } ret = ath3k_load_firmware(udev, firmware); release_firmware(firmware); return ret; } static void ath3k_disconnect(struct usb_interface *intf) { BT_DBG("ath3k_disconnect intf %p", intf); } static struct usb_driver ath3k_driver = { .name = "ath3k", .probe = ath3k_probe, .disconnect = ath3k_disconnect, .id_table = ath3k_table, }; module_usb_driver(ath3k_driver); MODULE_AUTHOR("Atheros Communications"); MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL"); MODULE_FIRMWARE(ATH3K_FIRMWARE);