diff options
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/scsi.h | 226 | ||||
| -rw-r--r-- | include/scsi/scsi_ioctl.h | 34 | ||||
| -rw-r--r-- | include/scsi/sg.h | 275 |
3 files changed, 535 insertions, 0 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h new file mode 100644 index 000000000..49ab75806 --- /dev/null +++ b/include/scsi/scsi.h @@ -0,0 +1,226 @@ +/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* + * This header file contains public constants and structures used by + * the scsi code for linux. + */ + +#ifndef _SCSI_SCSI_H +#define _SCSI_SCSI_H 1 + +#include <features.h> + +/* + * SCSI opcodes + */ + +#define TEST_UNIT_READY 0x00 +#define REZERO_UNIT 0x01 +#define REQUEST_SENSE 0x03 +#define FORMAT_UNIT 0x04 +#define READ_BLOCK_LIMITS 0x05 +#define REASSIGN_BLOCKS 0x07 +#define READ_6 0x08 +#define WRITE_6 0x0a +#define SEEK_6 0x0b +#define READ_REVERSE 0x0f +#define WRITE_FILEMARKS 0x10 +#define SPACE 0x11 +#define INQUIRY 0x12 +#define RECOVER_BUFFERED_DATA 0x14 +#define MODE_SELECT 0x15 +#define RESERVE 0x16 +#define RELEASE 0x17 +#define COPY 0x18 +#define ERASE 0x19 +#define MODE_SENSE 0x1a +#define START_STOP 0x1b +#define RECEIVE_DIAGNOSTIC 0x1c +#define SEND_DIAGNOSTIC 0x1d +#define ALLOW_MEDIUM_REMOVAL 0x1e + +#define SET_WINDOW 0x24 +#define READ_CAPACITY 0x25 +#define READ_10 0x28 +#define WRITE_10 0x2a +#define SEEK_10 0x2b +#define WRITE_VERIFY 0x2e +#define VERIFY 0x2f +#define SEARCH_HIGH 0x30 +#define SEARCH_EQUAL 0x31 +#define SEARCH_LOW 0x32 +#define SET_LIMITS 0x33 +#define PRE_FETCH 0x34 +#define READ_POSITION 0x34 +#define SYNCHRONIZE_CACHE 0x35 +#define LOCK_UNLOCK_CACHE 0x36 +#define READ_DEFECT_DATA 0x37 +#define MEDIUM_SCAN 0x38 +#define COMPARE 0x39 +#define COPY_VERIFY 0x3a +#define WRITE_BUFFER 0x3b +#define READ_BUFFER 0x3c +#define UPDATE_BLOCK 0x3d +#define READ_LONG 0x3e +#define WRITE_LONG 0x3f +#define CHANGE_DEFINITION 0x40 +#define WRITE_SAME 0x41 +#define READ_TOC 0x43 +#define LOG_SELECT 0x4c +#define LOG_SENSE 0x4d +#define MODE_SELECT_10 0x55 +#define RESERVE_10 0x56 +#define RELEASE_10 0x57 +#define MODE_SENSE_10 0x5a +#define PERSISTENT_RESERVE_IN 0x5e +#define PERSISTENT_RESERVE_OUT 0x5f +#define MOVE_MEDIUM 0xa5 +#define READ_12 0xa8 +#define WRITE_12 0xaa +#define WRITE_VERIFY_12 0xae +#define SEARCH_HIGH_12 0xb0 +#define SEARCH_EQUAL_12 0xb1 +#define SEARCH_LOW_12 0xb2 +#define READ_ELEMENT_STATUS 0xb8 +#define SEND_VOLUME_TAG 0xb6 +#define WRITE_LONG_2 0xea + +/* + * Status codes + */ + +#define GOOD 0x00 +#define CHECK_CONDITION 0x01 +#define CONDITION_GOOD 0x02 +#define BUSY 0x04 +#define INTERMEDIATE_GOOD 0x08 +#define INTERMEDIATE_C_GOOD 0x0a +#define RESERVATION_CONFLICT 0x0c +#define COMMAND_TERMINATED 0x11 +#define QUEUE_FULL 0x14 + +#define STATUS_MASK 0x3e + +/* + * SENSE KEYS + */ + +#define NO_SENSE 0x00 +#define RECOVERED_ERROR 0x01 +#define NOT_READY 0x02 +#define MEDIUM_ERROR 0x03 +#define HARDWARE_ERROR 0x04 +#define ILLEGAL_REQUEST 0x05 +#define UNIT_ATTENTION 0x06 +#define DATA_PROTECT 0x07 +#define BLANK_CHECK 0x08 +#define COPY_ABORTED 0x0a +#define ABORTED_COMMAND 0x0b +#define VOLUME_OVERFLOW 0x0d +#define MISCOMPARE 0x0e + + +/* + * DEVICE TYPES + */ + +#define TYPE_DISK 0x00 +#define TYPE_TAPE 0x01 +#define TYPE_PROCESSOR 0x03 /* HP scanners use this */ +#define TYPE_WORM 0x04 /* Treated as ROM by our system */ +#define TYPE_ROM 0x05 +#define TYPE_SCANNER 0x06 +#define TYPE_MOD 0x07 /* Magneto-optical disk - + * - treated as TYPE_DISK */ +#define TYPE_MEDIUM_CHANGER 0x08 +#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */ +#define TYPE_NO_LUN 0x7f + +/* + * standard mode-select header prepended to all mode-select commands + * + * moved here from cdrom.h -- kraxel + */ + +struct ccs_modesel_head + { + unsigned char _r1; /* reserved. */ + unsigned char medium; /* device-specific medium type. */ + unsigned char _r2; /* reserved. */ + unsigned char block_desc_length; /* block descriptor length. */ + unsigned char density; /* device-specific density code. */ + unsigned char number_blocks_hi; /* number of blocks in this block + desc. */ + unsigned char number_blocks_med; + unsigned char number_blocks_lo; + unsigned char _r3; + unsigned char block_length_hi; /* block length for blocks in this + desc. */ + unsigned char block_length_med; + unsigned char block_length_lo; + }; + +/* + * MESSAGE CODES + */ + +#define COMMAND_COMPLETE 0x00 +#define EXTENDED_MESSAGE 0x01 +#define EXTENDED_MODIFY_DATA_POINTER 0x00 +#define EXTENDED_SDTR 0x01 +#define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ +#define EXTENDED_WDTR 0x03 +#define SAVE_POINTERS 0x02 +#define RESTORE_POINTERS 0x03 +#define DISCONNECT 0x04 +#define INITIATOR_ERROR 0x05 +#define ABORT 0x06 +#define MESSAGE_REJECT 0x07 +#define NOP 0x08 +#define MSG_PARITY_ERROR 0x09 +#define LINKED_CMD_COMPLETE 0x0a +#define LINKED_FLG_CMD_COMPLETE 0x0b +#define BUS_DEVICE_RESET 0x0c + +#define INITIATE_RECOVERY 0x0f /* SCSI-II only */ +#define RELEASE_RECOVERY 0x10 /* SCSI-II only */ + +#define SIMPLE_QUEUE_TAG 0x20 +#define HEAD_OF_QUEUE_TAG 0x21 +#define ORDERED_QUEUE_TAG 0x22 + +/* + * Here are some scsi specific ioctl commands which are sometimes useful. + */ +/* These are a few other constants only used by scsi devices. */ + +#define SCSI_IOCTL_GET_IDLUN 0x5382 + +/* Used to turn on and off tagged queuing for scsi devices. */ + +#define SCSI_IOCTL_TAGGED_ENABLE 0x5383 +#define SCSI_IOCTL_TAGGED_DISABLE 0x5384 + +/* Used to obtain the host number of a device. */ +#define SCSI_IOCTL_PROBE_HOST 0x5385 + +/* Used to get the bus number for a device. */ +#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386 + +#endif /* scsi/scsi.h */ diff --git a/include/scsi/scsi_ioctl.h b/include/scsi/scsi_ioctl.h new file mode 100644 index 000000000..11f016179 --- /dev/null +++ b/include/scsi/scsi_ioctl.h @@ -0,0 +1,34 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SCSI_IOCTL_H +#define _SCSI_IOCTL_H + +/* IOCTLs for SCSI. */ +#define SCSI_IOCTL_SEND_COMMAND 1 /* Send a command to the SCSI host. */ +#define SCSI_IOCTL_TEST_UNIT_READY 2 /* Test if unit is ready. */ +#define SCSI_IOCTL_BENCHMARK_COMMAND 3 +#define SCSI_IOCTL_SYNC 4 /* Request synchronous parameters. */ +#define SCSI_IOCTL_START_UNIT 5 +#define SCSI_IOCTL_STOP_UNIT 6 +#define SCSI_IOCTL_DOORLOCK 0x5380 /* Lock the eject mechanism. */ +#define SCSI_IOCTL_DOORUNLOCK 0x5381 /* Unlock the mechanism. */ + +#endif + + diff --git a/include/scsi/sg.h b/include/scsi/sg.h new file mode 100644 index 000000000..b0dc0ad7d --- /dev/null +++ b/include/scsi/sg.h @@ -0,0 +1,275 @@ +/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* + History: + Started: Aug 9 by Lawrence Foard (entropy@world.std.com), to allow user + process control of SCSI devices. + Development Sponsored by Killy Corp. NY NY +*/ + +#ifndef _SCSI_SG_H +#define _SCSI_SG_H 1 + +#include <features.h> + + +/* New interface introduced in the 3.x SG drivers follows */ + +/* Same structure as used by readv() Linux system call. It defines one + scatter-gather element. */ +typedef struct sg_iovec +{ + void * iov_base; /* Starting address */ + size_t iov_len; /* Length in bytes */ +} sg_iovec_t; + + +typedef struct sg_io_hdr +{ + int interface_id; /* [i] 'S' for SCSI generic (required) */ + int dxfer_direction; /* [i] data transfer direction */ + unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */ + unsigned char mx_sb_len; /* [i] max length to write to sbp */ + unsigned short int iovec_count; /* [i] 0 implies no scatter gather */ + unsigned int dxfer_len; /* [i] byte count of data transfer */ + void * dxferp; /* [i], [*io] points to data transfer memory + or scatter gather list */ + unsigned char * cmdp; /* [i], [*i] points to command to perform */ + unsigned char * sbp; /* [i], [*o] points to sense_buffer memory */ + unsigned int timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */ + unsigned int flags; /* [i] 0 -> default, see SG_FLAG... */ + int pack_id; /* [i->o] unused internally (normally) */ + void * usr_ptr; /* [i->o] unused internally */ + unsigned char status; /* [o] scsi status */ + unsigned char masked_status;/* [o] shifted, masked scsi status */ + unsigned char msg_status; /* [o] messaging level data (optional) */ + unsigned char sb_len_wr; /* [o] byte count actually written to sbp */ + unsigned short int host_status; /* [o] errors from host adapter */ + unsigned short int driver_status;/* [o] errors from software driver */ + int resid; /* [o] dxfer_len - actual_transferred */ + unsigned int duration; /* [o] time taken by cmd (unit: millisec) */ + unsigned int info; /* [o] auxiliary information */ +} sg_io_hdr_t; + + +/* Use negative values to flag difference from original sg_header structure. */ +#define SG_DXFER_NONE -1 /* e.g. a SCSI Test Unit Ready command */ +#define SG_DXFER_TO_DEV -2 /* e.g. a SCSI WRITE command */ +#define SG_DXFER_FROM_DEV -3 /* e.g. a SCSI READ command */ +#define SG_DXFER_TO_FROM_DEV -4 /* treated like SG_DXFER_FROM_DEV with the + additional property than during indirect + IO the user buffer is copied into the + kernel buffers before the transfer */ + + +/* following flag values can be "or"-ed together */ +#define SG_FLAG_DIRECT_IO 1 /* default is indirect IO */ +#define SG_FLAG_LUN_INHIBIT 2 /* default is to put device's lun into */ + /* the 2nd byte of SCSI command */ +#define SG_FLAG_NO_DXFER 0x10000 /* no transfer of kernel buffers to/from */ + /* user space (debug indirect IO) */ + +/* The following 'info' values are "or"-ed together. */ +#define SG_INFO_OK_MASK 0x1 +#define SG_INFO_OK 0x0 /* no sense, host nor driver "noise" */ +#define SG_INFO_CHECK 0x1 /* something abnormal happened */ + +#define SG_INFO_DIRECT_IO_MASK 0x6 +#define SG_INFO_INDIRECT_IO 0x0 /* data xfer via kernel buffers (or no xfer) */ +#define SG_INFO_DIRECT_IO 0x2 /* direct IO requested and performed */ +#define SG_INFO_MIXED_IO 0x4 /* part direct, part indirect IO */ + + +/* Request information about a specific SG device, used by + SG_GET_SCSI_ID ioctl (). */ +struct sg_scsi_id { + /* Host number as in "scsi<n>" where 'n' is one of 0, 1, 2 etc. */ + int host_no; + int channel; + /* SCSI id of target device. */ + int scsi_id; + int lun; + /* TYPE_... defined in <scsi/scsi.h>. */ + int scsi_type; + /* Host (adapter) maximum commands per lun. */ + short int h_cmd_per_lun; + /* Device (or adapter) maximum queue length. */ + short int d_queue_depth; + /* Unused, set to 0 for now. */ + int unused[2]; +}; + +/* Used by SG_GET_REQUEST_TABLE ioctl(). */ +typedef struct sg_req_info { + char req_state; /* 0 -> not used, 1 -> written, 2 -> ready to read */ + char orphan; /* 0 -> normal request, 1 -> from interruped SG_IO */ + char sg_io_owned; /* 0 -> complete with read(), 1 -> owned by SG_IO */ + char problem; /* 0 -> no problem detected, 1 -> error to report */ + int pack_id; /* pack_id associated with request */ + void * usr_ptr; /* user provided pointer (in new interface) */ + unsigned int duration; /* millisecs elapsed since written (req_state==1) + or request duration (req_state==2) */ + int unused; +} sg_req_info_t; + + +/* IOCTLs: Those ioctls that are relevant to the SG 3.x drivers follow. + [Those that only apply to the SG 2.x drivers are at the end of the file.] + (_GET_s yield result via 'int *' 3rd argument unless otherwise indicated) */ + +#define SG_EMULATED_HOST 0x2203 /* true for emulated host adapter (ATAPI) */ + +/* Used to configure SCSI command transformation layer for ATAPI devices */ +/* Only supported by the ide-scsi driver */ +#define SG_SET_TRANSFORM 0x2204 /* N.B. 3rd arg is not pointer but value: */ + /* 3rd arg = 0 to disable transform, 1 to enable it */ +#define SG_GET_TRANSFORM 0x2205 + +#define SG_SET_RESERVED_SIZE 0x2275 /* request a new reserved buffer size */ +#define SG_GET_RESERVED_SIZE 0x2272 /* actual size of reserved buffer */ + +/* The following ioctl has a 'sg_scsi_id_t *' object as its 3rd argument. */ +#define SG_GET_SCSI_ID 0x2276 /* Yields fd's bus, chan, dev, lun + type */ +/* SCSI id information can also be obtained from SCSI_IOCTL_GET_IDLUN */ + +/* Override host setting and always DMA using low memory ( <16MB on i386) */ +#define SG_SET_FORCE_LOW_DMA 0x2279 /* 0-> use adapter setting, 1-> force */ +#define SG_GET_LOW_DMA 0x227a /* 0-> use all ram for dma; 1-> low dma ram */ + +/* When SG_SET_FORCE_PACK_ID set to 1, pack_id is input to read() which + tries to fetch a packet with a matching pack_id, waits, or returns EAGAIN. + If pack_id is -1 then read oldest waiting. When ...FORCE_PACK_ID set to 0 + then pack_id ignored by read() and oldest readable fetched. */ +#define SG_SET_FORCE_PACK_ID 0x227b +#define SG_GET_PACK_ID 0x227c /* Yields oldest readable pack_id (or -1) */ + +#define SG_GET_NUM_WAITING 0x227d /* Number of commands awaiting read() */ + +/* Yields max scatter gather tablesize allowed by current host adapter */ +#define SG_GET_SG_TABLESIZE 0x227F /* 0 implies can't do scatter gather */ + +#define SG_GET_VERSION_NUM 0x2282 /* Example: version 2.1.34 yields 20134 */ + +/* Returns -EBUSY if occupied. 3rd argument pointer to int (see next) */ +#define SG_SCSI_RESET 0x2284 +/* Associated values that can be given to SG_SCSI_RESET follow */ +#define SG_SCSI_RESET_NOTHING 0 +#define SG_SCSI_RESET_DEVICE 1 +#define SG_SCSI_RESET_BUS 2 +#define SG_SCSI_RESET_HOST 3 + +/* synchronous SCSI command ioctl, (only in version 3 interface) */ +#define SG_IO 0x2285 /* similar effect as write() followed by read() */ + +#define SG_GET_REQUEST_TABLE 0x2286 /* yields table of active requests */ + +/* How to treat EINTR during SG_IO ioctl(), only in SG 3.x series */ +#define SG_SET_KEEP_ORPHAN 0x2287 /* 1 -> hold for read(), 0 -> drop (def) */ +#define SG_GET_KEEP_ORPHAN 0x2288 + + +#define SG_SCATTER_SZ (8 * 4096) /* PAGE_SIZE not available to user */ +/* Largest size (in bytes) a single scatter-gather list element can have. + The value must be a power of 2 and <= (PAGE_SIZE * 32) [131072 bytes on + i386]. The minimum value is PAGE_SIZE. If scatter-gather not supported + by adapter then this value is the largest data block that can be + read/written by a single scsi command. The user can find the value of + PAGE_SIZE by calling getpagesize() defined in unistd.h . */ + +#define SG_DEFAULT_RETRIES 1 + +/* Defaults, commented if they differ from original sg driver */ +#define SG_DEF_FORCE_LOW_DMA 0 /* was 1 -> memory below 16MB on i386 */ +#define SG_DEF_FORCE_PACK_ID 0 +#define SG_DEF_KEEP_ORPHAN 0 +#define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ /* load time option */ + +/* maximum outstanding requests, write() yields EDOM if exceeded */ +#define SG_MAX_QUEUE 16 + +#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE /* for backward compatibility */ + +/* Alternate style type names, "..._t" variants preferred */ +typedef struct sg_io_hdr Sg_io_hdr; +typedef struct sg_io_vec Sg_io_vec; +typedef struct sg_scsi_id Sg_scsi_id; +typedef struct sg_req_info Sg_req_info; + + +/* vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv */ +/* The older SG interface based on the 'sg_header' structure follows. */ +/* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */ + +#define SG_MAX_SENSE 16 /* this only applies to the sg_header interface */ + +struct sg_header + { + /* Length of incoming packet (including header). */ + int pack_len; + /* Maximal length of expected reply. */ + int reply_len; + /* Id number of packet. */ + int pack_id; + /* 0==ok, otherwise error number. */ + int result; + /* Force 12 byte command length for group 6 & 7 commands. */ + unsigned int twelve_byte:1; + /* SCSI status from target. */ + unsigned int target_status:5; + /* Host status (see "DID" codes). */ + unsigned int host_status:8; + /* Driver status+suggestion. */ + unsigned int driver_status:8; + /* Unused. */ + unsigned int other_flags:10; + /* Output in 3 cases: + when target_status is CHECK_CONDITION or + when target_status is COMMAND_TERMINATED or + when (driver_status & DRIVER_SENSE) is true. */ + unsigned char sense_buffer[SG_MAX_SENSE]; + }; + + +/* IOCTLs: The following are not required (or ignored) when the sg_io_hdr_t + interface is used. They are kept for backward compatibility with + the original and version 2 drivers. */ + +#define SG_SET_TIMEOUT 0x2201 /* Set timeout; *(int *)arg==timeout. */ +#define SG_GET_TIMEOUT 0x2202 /* Get timeout; return timeout. */ + +/* Get/set command queuing state per fd (default is SG_DEF_COMMAND_Q). */ +#define SG_GET_COMMAND_Q 0x2270 /* Yields 0 (queuing off) or 1 (on). */ +#define SG_SET_COMMAND_Q 0x2271 /* Change queuing state with 0 or 1. */ + +/* Turn on error sense trace (1..8), dump this device to log/console (9) + or dump all sg device states ( >9 ) to log/console. */ +#define SG_SET_DEBUG 0x227e /* 0 -> turn off debug */ + +#define SG_NEXT_CMD_LEN 0x2283 /* Override SCSI command length with given + number on the next write() on this file + descriptor. */ + +/* Defaults, commented if they differ from original sg driver */ +#define SG_DEFAULT_TIMEOUT (60*HZ) /* HZ == 'jiffies in 1 second' */ +#define SG_DEF_COMMAND_Q 0 /* command queuing is always on when + the new interface is used */ +#define SG_DEF_UNDERRUN_FLAG 0 + + +#endif /* scsi/sg.h */ |