From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/usb/storage/initializers.c | 94 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 drivers/usb/storage/initializers.c (limited to 'drivers/usb/storage/initializers.c') diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c new file mode 100644 index 000000000..f8f9ce8dc --- /dev/null +++ b/drivers/usb/storage/initializers.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Special Initializers for certain USB Mass Storage devices + * + * Current development and maintenance by: + * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) + * + * This driver is based on the 'USB Mass Storage Class' document. This + * describes in detail the protocol used to communicate with such + * devices. Clearly, the designers had SCSI and ATAPI commands in + * mind when they created this document. The commands are all very + * similar to commands in the SCSI-II and ATAPI specifications. + * + * It is important to note that in a number of cases this class + * exhibits class-specific exemptions from the USB specification. + * Notably the usage of NAK, STALL and ACK differs from the norm, in + * that they are used to communicate wait, failed and OK on commands. + * + * Also, for certain devices, the interrupt endpoint is used to convey + * status of a command. + */ + +#include + +#include "usb.h" +#include "initializers.h" +#include "debug.h" +#include "transport.h" + +/* + * This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target + * mode + */ +int usb_stor_euscsi_init(struct us_data *us) +{ + int result; + + usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n"); + result = usb_stor_control_msg(us, us->send_ctrl_pipe, + 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, + 0x01, 0x0, NULL, 0x0, 5 * HZ); + usb_stor_dbg(us, "-- result is %d\n", result); + + return 0; +} + +/* + * This function is required to activate all four slots on the UCR-61S2B + * flash reader + */ +int usb_stor_ucr61s2b_init(struct us_data *us) +{ + struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf; + struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf; + int res; + unsigned int partial; + static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS"; + + usb_stor_dbg(us, "Sending UCR-61S2B initialization packet...\n"); + + bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); + bcb->Tag = 0; + bcb->DataTransferLength = cpu_to_le32(0); + bcb->Flags = bcb->Lun = 0; + bcb->Length = sizeof(init_string) - 1; + memset(bcb->CDB, 0, sizeof(bcb->CDB)); + memcpy(bcb->CDB, init_string, sizeof(init_string) - 1); + + res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, + US_BULK_CB_WRAP_LEN, &partial); + if (res) + return -EIO; + + usb_stor_dbg(us, "Getting status packet...\n"); + res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, + US_BULK_CS_WRAP_LEN, &partial); + if (res) + return -EIO; + + return 0; +} + +/* This places the HUAWEI E220 devices in multi-port mode */ +int usb_stor_huawei_e220_init(struct us_data *us) +{ + int result; + + result = usb_stor_control_msg(us, us->send_ctrl_pipe, + USB_REQ_SET_FEATURE, + USB_TYPE_STANDARD | USB_RECIP_DEVICE, + 0x01, 0x0, NULL, 0x0, 1 * HZ); + usb_stor_dbg(us, "Huawei mode set result is %d\n", result); + return 0; +} -- cgit v1.2.3