^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Special Initializers for certain USB Mass Storage devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Current development and maintenance by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This driver is based on the 'USB Mass Storage Class' document. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * describes in detail the protocol used to communicate with such
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * devices. Clearly, the designers had SCSI and ATAPI commands in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * mind when they created this document. The commands are all very
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * similar to commands in the SCSI-II and ATAPI specifications.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * It is important to note that in a number of cases this class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * exhibits class-specific exemptions from the USB specification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Notably the usage of NAK, STALL and ACK differs from the norm, in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * that they are used to communicate wait, failed and OK on commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Also, for certain devices, the interrupt endpoint is used to convey
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * status of a command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "usb.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "initializers.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "transport.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int usb_stor_euscsi_init(struct us_data *us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) result = usb_stor_control_msg(us, us->send_ctrl_pipe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 0x01, 0x0, NULL, 0x0, 5 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) usb_stor_dbg(us, "-- result is %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * This function is required to activate all four slots on the UCR-61S2B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * flash reader
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) int usb_stor_ucr61s2b_init(struct us_data *us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned int partial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) usb_stor_dbg(us, "Sending UCR-61S2B initialization packet...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) bcb->Tag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) bcb->DataTransferLength = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) bcb->Flags = bcb->Lun = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) bcb->Length = sizeof(init_string) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) memset(bcb->CDB, 0, sizeof(bcb->CDB));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) memcpy(bcb->CDB, init_string, sizeof(init_string) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) US_BULK_CB_WRAP_LEN, &partial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) usb_stor_dbg(us, "Getting status packet...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) US_BULK_CS_WRAP_LEN, &partial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* This places the HUAWEI E220 devices in multi-port mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int usb_stor_huawei_e220_init(struct us_data *us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) result = usb_stor_control_msg(us, us->send_ctrl_pipe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) USB_REQ_SET_FEATURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) USB_TYPE_STANDARD | USB_RECIP_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 0x01, 0x0, NULL, 0x0, 1 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) usb_stor_dbg(us, "Huawei mode set result is %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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