armband -

Age	Commit message (Expand)	Author	Files	Lines
2016-05-15	Update Cavium email domain	Stanislaw Kardach	1	-3/+3
2016-03-30	Add Florin, Alexandru, and Mazdak to INFO file	Trevor Bramwell	1	-0/+4
2016-03-25	Update INFO with new Committers	Trevor Bramwell	1	-3/+4
2015-09-15	Adding INFO and LICENSE for review	Aric Gardner	1	-0/+23

/* * Driver for Option High Speed Mobile Devices. * * (c) 2008 Dan Williams <dcbw@redhat.com> * * Inspiration taken from sierra_ms.c by Kevin Lloyd <klloyd@sierrawireless.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., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/usb.h> #include <linux/slab.h> #include <linux/module.h> #include "usb.h" #include "transport.h" #include "option_ms.h" #include "debug.h" #define ZCD_FORCE_MODEM 0x01 #define ZCD_ALLOW_MS 0x02 static unsigned int option_zero_cd = ZCD_FORCE_MODEM; module_param(option_zero_cd, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(option_zero_cd, "ZeroCD mode (1=Force Modem (default)," " 2=Allow CD-Rom"); #define RESPONSE_LEN 1024 static int option_rezero(struct us_data *us) { const unsigned char rezero_msg[] = { 0x55, 0x53, 0x42, 0x43, 0x78, 0x56, 0x34, 0x12, 0x01, 0x00, 0x00, 0x00, 0x80, 0x00, 0x06, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; char *buffer; int result; usb_stor_dbg(us, "Option MS: %s\n", "DEVICE MODE SWITCH"); buffer = kzalloc(RESPONSE_LEN, GFP_KERNEL); if (buffer == NULL) return USB_STOR_TRANSPORT_ERROR; memcpy(buffer, rezero_msg, sizeof(rezero_msg)); result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, buffer, sizeof(rezero_msg), NULL); if (result != USB_STOR_XFER_GOOD) { result = USB_STOR_XFER_ERROR; goto out; } /* Some of the devices need to be asked for a response, but we don't * care what that response is. */ usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, buffer, RESPONSE_LEN, NULL); /* Read the CSW */ usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, buffer, 13, NULL); result = USB_STOR_XFER_GOOD; out: kfree(buffer); return result; } static int option_inquiry(struct us_data *us) { const unsigned char inquiry_msg[] = { 0x55, 0x53, 0x42, 0x43, 0x12, 0x34, 0x56, 0x78, 0x24, 0x00, 0x00, 0x00, 0x80, 0x00, 0x06, 0x12, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; char *buffer; int result; usb_stor_dbg(us, "Option MS: %s\n", "device inquiry for vendor name"); buffer = kzalloc(0x24, GFP_KERNEL); if (buffer == NULL) return USB_STOR_TRANSPORT_ERROR; memcpy(buffer, inquiry_msg, sizeof(inquiry_msg)); result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, buffer, sizeof(inquiry_msg), NULL); if (result != USB_STOR_XFER_GOOD) { result = USB_STOR_XFER_ERROR; goto out; } result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, buffer, 0x24, NULL); if (result != USB_STOR_XFER_GOOD) { result = USB_STOR_XFER_ERROR; goto out; } result = memcmp(buffer+8, "Option", 6); if (result != 0) result = memcmp(buffer+8, "ZCOPTION", 8); /* Read the CSW */ usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, buffer, 13, NULL); out: kfree(buffer); return result; } int option_ms_init(struct us_data *us) { int result; usb_stor_dbg(us, "Option MS: %s\n", "option_ms_init called"); /* Additional test for vendor information via INQUIRY, * because some vendor/product IDs are ambiguous */ result = option_inquiry(us); if (result != 0) { usb_stor_dbg(us, "Option MS: %s\n", "vendor is not Option or not determinable, no action taken"); return 0; } else usb_stor_dbg(us, "Option MS: %s\n", "this is a genuine Option device, proceeding"); /* Force Modem mode */ if (option_zero_cd == ZCD_FORCE_MODEM) { usb_stor_dbg(us, "Option MS: %s\n", "Forcing Modem Mode"); result = option_rezero(us); if (result != USB_STOR_XFER_GOOD) usb_stor_dbg(us, "Option MS: %s\n", "Failed to switch to modem mode"); return -EIO; } else if (option_zero_cd == ZCD_ALLOW_MS) { /* Allow Mass Storage mode (keep CD-Rom) */ usb_stor_dbg(us, "Option MS: %s\n", "Allowing Mass Storage Mode if device requests it"); } return 0; }