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| 1 | /* Special Initializers for certain USB Mass Storage devices | |||
| 2 | * | |||
| 3 | * $Id: initializers.c,v 1.2 2000/09/06 22:35:57 mdharm Exp $ | |||
| 4 | * | |||
| 5 | * Current development and maintenance by: | |||
| 6 | * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |||
| 7 | * | |||
| 8 | * This driver is based on the 'USB Mass Storage Class' document. This | |||
| 9 | * describes in detail the protocol used to communicate with such | |||
| 10 | * devices. Clearly, the designers had SCSI and ATAPI commands in | |||
| 11 | * mind when they created this document. The commands are all very | |||
| 12 | * similar to commands in the SCSI-II and ATAPI specifications. | |||
| 13 | * | |||
| 14 | * It is important to note that in a number of cases this class | |||
| 15 | * exhibits class-specific exemptions from the USB specification. | |||
| 16 | * Notably the usage of NAK, STALL and ACK differs from the norm, in | |||
| 17 | * that they are used to communicate wait, failed and OK on commands. | |||
| 18 | * | |||
| 19 | * Also, for certain devices, the interrupt endpoint is used to convey | |||
| 20 | * status of a command. | |||
| 21 | * | |||
| 22 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more | |||
| 23 | * information about this driver. | |||
| 24 | * | |||
| 25 | * This program is free software; you can redistribute it and/or modify it | |||
| 26 | * under the terms of the GNU General Public License as published by the | |||
| 27 | * Free Software Foundation; either version 2, or (at your option) any | |||
| 28 | * later version. | |||
| 29 | * | |||
| 30 | * This program is distributed in the hope that it will be useful, but | |||
| 31 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |||
| 32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |||
| 33 | * General Public License for more details. | |||
| 34 | * | |||
| 35 | * You should have received a copy of the GNU General Public License along | |||
| 36 | * with this program; if not, write to the Free Software Foundation, Inc., | |||
| 37 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |||
| 38 | */ | |||
| 39 | ||||
| 40 | #include <linux/sched.h> | |||
| 41 | #include <linux/errno.h> | |||
| 42 | ||||
| 43 | #include "usb.h" | |||
| 44 | #include "initializers.h" | |||
| 45 | #include "debug.h" | |||
| 46 | #include "transport.h" | |||
| 47 | ||||
| 48 | #define RIO_MSC 0x08 | |||
| 49 | #define RIOP_INIT "RIOP\x00\x01\x08" | |||
| 50 | #define RIOP_INIT_LEN 7 | |||
| 51 | #define RIO_SEND_LEN 40 | |||
| 52 | #define RIO_RECV_LEN 0x200 | |||
| 53 | ||||
| 54 | /* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target | |||
| 55 | * mode */ | |||
| 0 | 0 | - | 56 | int usb_stor_euscsi_init(struct us_data *us) |
| 57 | { | |||
| 58 | int result; | |||
| 59 | ||||
| 60 | US_DEBUGP("Attempting to init eUSCSI bridge...\n"); | |||
| 61 | us->iobuf[0] = 0x1; | |||
| 62 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, | |||
| 63 | 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, | |||
| 64 | 0x01, 0x0, us->iobuf, 0x1, 5*HZ); | |||
| 65 | US_DEBUGP("-- result is %d\n", result); | |||
| 66 | ||||
| 0 | - | 67 | return 0; | |
| 68 | } | |||
| 69 | ||||
| 70 | /* This function is required to activate all four slots on the UCR-61S2B | |||
| 71 | * flash reader */ | |||
| 0 | 0 | - | 72 | int usb_stor_ucr61s2b_init(struct us_data *us) |
| 73 | { | |||
| 74 | struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf; | |||
| 75 | struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf; | |||
| 76 | int res, partial; | |||
| 77 | static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS"; | |||
| 78 | ||||
| 79 | US_DEBUGP("Sending UCR-61S2B initialization packet...\n"); | |||
| 80 | ||||
| 81 | bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); | |||
| 82 | bcb->Tag = 0; | |||
| 83 | bcb->DataTransferLength = cpu_to_le32(0); | |||
| 84 | bcb->Flags = bcb->Lun = 0; | |||
| 85 | bcb->Length = sizeof(init_string) - 1; | |||
| 86 | memset(bcb->CDB, 0, sizeof(bcb->CDB)); | |||
| 87 | memcpy(bcb->CDB, init_string, sizeof(init_string) - 1); | |||
| 88 | ||||
| 89 | res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, | |||
| 90 | US_BULK_CB_WRAP_LEN, &partial); | |||
| 0 | 0 | - | 91 | if(res) |
| 0 | - | 92 | return res; | |
| 93 | ||||
| 94 | US_DEBUGP("Getting status packet...\n"); | |||
| 95 | res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, | |||
| 96 | US_BULK_CS_WRAP_LEN, &partial); | |||
| 97 | ||||
| 98 | return (res ? -1 : 0); | |||
| 0 | 0 | - | 98 | ternary-?: res |
| 0 | - | 98 | return ( res ? - 1 : 0 ) | |
| 99 | } | |||
| 100 | ||||
| 101 | /* Place the Rio Karma into mass storage mode. | |||
| 102 | * | |||
| 103 | * The initialization begins by sending 40 bytes starting | |||
| 104 | * RIOP\x00\x01\x08\x00, which the device will ack with a 512-byte | |||
| 105 | * packet with the high four bits set and everything else null. | |||
| 106 | * | |||
| 107 | * Next, we send RIOP\x80\x00\x08\x00. Each time, a 512 byte response | |||
| 108 | * must be read, but we must loop until byte 5 in the response is 0x08, | |||
| 109 | * indicating success. */ | |||
| 0 | 0 | - | 110 | int rio_karma_init(struct us_data *us) |
| 111 | { | |||
| 112 | int result, partial; | |||
| 113 | char *recv; | |||
| 114 | unsigned long timeout; | |||
| 115 | ||||
| 116 | // us->iobuf is big enough to hold cmd but not receive | |||
| 0 | 0 | - | 117 | if (!(recv = kmalloc(RIO_RECV_LEN, GFP_KERNEL))) |
| 0 | - | 118 | goto die_nomem; | |
| 119 | ||||
| 120 | US_DEBUGP("Initializing Karma...\n"); | |||
| 121 | ||||
| 122 | memset(us->iobuf, 0, RIO_SEND_LEN); | |||
| 123 | memcpy(us->iobuf, RIOP_INIT, RIOP_INIT_LEN); | |||
| 124 | ||||
| 125 | result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, | |||
| 126 | us->iobuf, RIO_SEND_LEN, &partial); | |||
| 0 | 0 | - | 127 | if (result != USB_STOR_XFER_GOOD) |
| 0 | - | 128 | goto die; | |
| 129 | ||||
| 130 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |||
| 131 | recv, RIO_RECV_LEN, &partial); | |||
| 0 | 0 | - | 132 | if (result != USB_STOR_XFER_GOOD) |
| 0 | - | 133 | goto die; | |
| 134 | ||||
| 135 | us->iobuf[4] = 0x80; | |||
| 136 | us->iobuf[5] = 0; | |||
| 137 | timeout = jiffies + msecs_to_jiffies(3000); | |||
| 0 | 0 | - | 138 | for (;;) { |
| 139 | US_DEBUGP("Sending init command\n"); | |||
| 140 | result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, | |||
| 141 | us->iobuf, RIO_SEND_LEN, &partial); | |||
| 0 | 0 | - | 142 | if (result != USB_STOR_XFER_GOOD) |
| 0 | - | 143 | goto die; | |
| 144 | ||||
| 145 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |||
| 146 | recv, RIO_RECV_LEN, &partial); | |||
| 0 | 0 | - | 147 | if (result != USB_STOR_XFER_GOOD) |
| 0 | - | 148 | goto die; | |
| 149 | ||||
| 0 | 0 | - | 150 | if (recv[5] == RIO_MSC) |
| 0 | - | 151 | break; | |
| 0 | 0 | - | 152 | if (time_after(jiffies, timeout)) |
| 0 | - | 152 | ((T) && (T) && (T)) | |
| 0 | - | 152 | ((T) && (T) && (F)) | |
| 0 | - | 152 | ((T) && (F) && (_)) | |
| 0 | - | 152 | ((F) && (_) && (_)) | |
| 0 | - | 153 | goto die; | |
| 154 | msleep(10); | |||
| 155 | } | |||
| 156 | US_DEBUGP("Karma initialized.\n"); | |||
| 157 | kfree(recv); | |||
| 0 | - | 158 | return 0; | |
| 159 | ||||
| 160 | die: | |||
| 161 | kfree(recv); | |||
| 162 | die_nomem: | |||
| 163 | US_DEBUGP("Could not initialize karma.\n"); | |||
| 0 | - | 164 | return USB_STOR_TRANSPORT_FAILED; | |
| 165 | } | |||
| 166 | ||||
| ***TER 0% (0/39) of SOURCE FILE initializers.c | ||||