r2646 - in trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian: . patches patches/series
maximilian attems
maks-guest@costa.debian.org
Tue, 08 Mar 2005 14:54:33 +0100
Author: maks-guest
Date: 2005-03-08 14:54:32 +0100 (Tue, 08 Mar 2005)
New Revision: 2646
Added:
trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-add-scsi_changer.dpatch
Removed:
trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-scsi_changer.dpatch
Modified:
trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/changelog
trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/TODO
trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/series/2.6.11-1
Log:
add newer version of the scsi changer.
Modified: trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/changelog
===================================================================
--- trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/changelog 2005-03-08 12:59:56 UTC (rev 2645)
+++ trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/changelog 2005-03-08 13:54:32 UTC (rev 2646)
@@ -7,8 +7,10 @@
* [powerpc] 750Cxe and tau calibration patch from Nicolas Det (Sven Luther)
- * Fix Docbook to allow kernel-doc to build (Maximilian Attems
+ * Fix Docbook to allow kernel-doc to build (Maximilian Attems)
+ * Add newer scsi-changer patch (Maximilian Attems)
+
-- Sven Luther <luther@debian.org> Mon, 7 Mar 2005 14:56:32 +0100
kernel-source-2.6.10 (2.6.10-6) UNRELEASED; urgency=low
Modified: trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/TODO
===================================================================
--- trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/TODO 2005-03-08 12:59:56 UTC (rev 2645)
+++ trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/TODO 2005-03-08 13:54:32 UTC (rev 2646)
@@ -1,6 +1,5 @@
# + modular-ide-pnp.dpatch # OK, needs rediff
# + drivers-net-tg3-readd.dpatch # OK, needs rediff
-# + drivers-scsi_changer.dpatch # OK, needs rediff
# + x86-i486_emu.dpatch # OK, needs rediff
# + modular-ide.dpatch # FAILED
Added: trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-add-scsi_changer.dpatch
===================================================================
--- trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-add-scsi_changer.dpatch 2005-03-08 12:59:56 UTC (rev 2645)
+++ trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-add-scsi_changer.dpatch 2005-03-08 13:54:32 UTC (rev 2646)
@@ -0,0 +1,1484 @@
+
+From: Gerd Knorr <kraxel@bytesex.org>
+
+This patch adds a device driver for scsi media changer devices (tape
+libraries for example).
+
+It exists for quite some time (since 2.2.x or so ...), is used by several
+people and also is in some vendor kernels (debian, suse, maybe others as
+well). People bug be from time to time to submit it ;)
+
+Recently I went over it and did some 2.6 cleanups, module parameters and
+the like. And now, finally, here it is.
+
+Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
+Signed-off-by: Andrew Morton <akpm@osdl.org>
+---
+
+ 25-akpm/Documentation/scsi-changer.txt | 180 +++++
+ 25-akpm/drivers/scsi/Kconfig | 18
+ 25-akpm/drivers/scsi/Makefile | 1
+ 25-akpm/drivers/scsi/ch.c | 1020 +++++++++++++++++++++++++++++++++
+ 25-akpm/include/linux/chio.h | 168 +++++
+ 25-akpm/include/linux/major.h | 1
+ 25-akpm/include/scsi/scsi.h | 3
+ 7 files changed, 1391 insertions(+)
+
+diff -puN /dev/null Documentation/scsi-changer.txt
+--- /dev/null Thu Apr 11 07:25:15 2002
++++ 25-akpm/Documentation/scsi-changer.txt Thu Feb 17 16:55:13 2005
+@@ -0,0 +1,180 @@
++
++README for the SCSI media changer driver
++========================================
++
++This is a driver for SCSI Medium Changer devices, which are listed
++with "Type: Medium Changer" in /proc/scsi/scsi.
++
++This is for *real* Jukeboxes. It is *not* supported to work with
++common small CD-ROM changers, neither one-lun-per-slot SCSI changers
++nor IDE drives.
++
++Userland tools available from here:
++ http://linux.bytesex.org/misc/changer.html
++
++
++General Information
++-------------------
++
++First some words about how changers work: A changer has 2 (possibly
++more) SCSI ID's. One for the changer device which controls the robot,
++and one for the device which actually reads and writes the data. The
++later may be anything, a MOD, a CD-ROM, a tape or whatever. For the
++changer device this is a "don't care", he *only* shuffles around the
++media, nothing else.
++
++
++The SCSI changer model is complex, compared to - for example - IDE-CD
++changers. But it allows to handle nearly all possible cases. It knows
++4 different types of changer elements:
++
++ media transport - this one shuffles around the media, i.e. the
++ transport arm. Also known as "picker".
++ storage - a slot which can hold a media.
++ import/export - the same as above, but is accessable from outside,
++ i.e. there the operator (you !) can use this to
++ fill in and remove media from the changer.
++ Sometimes named "mailslot".
++ data transfer - this is the device which reads/writes, i.e. the
++ CD-ROM / Tape / whatever drive.
++
++None of these is limited to one: A huge Jukebox could have slots for
++123 CD-ROM's, 5 CD-ROM readers (and therefore 6 SCSI ID's: the changer
++and each CD-ROM) and 2 transport arms. No problem to handle.
++
++
++How it is implemented
++---------------------
++
++I implemented the driver as character device driver with a NetBSD-like
++ioctl interface. Just grabbed NetBSD's header file and one of the
++other linux SCSI device drivers as starting point. The interface
++should be source code compatible with NetBSD. So if there is any
++software (anybody knows ???) which supports a BSDish changer driver,
++it should work with this driver too.
++
++Over time a few more ioctls where added, volume tag support for example
++wasn't covered by the NetBSD ioctl API.
++
++
++Current State
++-------------
++
++Support for more than one transport arm is not implemented yet (and
++nobody asked for it so far...).
++
++I test and use the driver myself with a 35 slot cdrom jukebox from
++Grundig. I got some reports telling it works ok with tape autoloaders
++(Exabyte, HP and DEC). Some People use this driver with amanda. It
++works fine with small (11 slots) and a huge (4 MOs, 88 slots)
++magneto-optical Jukebox. Probably with lots of other changers too, most
++(but not all :-) people mail me only if it does *not* work...
++
++I don't have any device lists, neither black-list nor white-list. Thus
++it is quite useless to ask me whenever a specific device is supported or
++not. In theory every changer device which supports the SCSI-2 media
++changer command set should work out-of-the-box with this driver. If it
++doesn't, it is a bug. Either within the driver or within the firmware
++of the changer device.
++
++
++Using it
++--------
++
++This is a character device with major number is 86, so use
++"mknod /dev/sch0 c 86 0" to create the special file for the driver.
++
++If the module finds the changer, it prints some messages about the
++device [ try "dmesg" if you don't see anything ] and should show up in
++/proc/devices. If not.... some changers use ID ? / LUN 0 for the
++device and ID ? / LUN 1 for the robot mechanism. But Linux does *not*
++look for LUN's other than 0 as default, becauce there are to many
++broken devices. So you can try:
++
++ 1) echo "scsi add-single-device 0 0 ID 1" > /proc/scsi/scsi
++ (replace ID with the SCSI-ID of the device)
++ 2) boot the kernel with "max_scsi_luns=1" on the command line
++ (append="max_scsi_luns=1" in lilo.conf should do the trick)
++
++
++Trouble?
++--------
++
++If you insmod the driver with "insmod debug=1", it will be verbose and
++prints a lot of stuff to the syslog. Compiling the kernel with
++CONFIG_SCSI_CONSTANTS=y improves the quality of the error messages alot
++because the kernel will translate the error codes into human-readable
++strings then.
++
++You can display these messages with the dmesg command (or check the
++logfiles). If you email me some question becauce of a problem with the
++driver, please include these messages.
++
++
++Insmod options
++--------------
++
++debug=0/1
++ Enable debug messages (see above, default: 0).
++
++verbose=0/1
++ Be verbose (default: 1).
++
++init=0/1
++ Send INITIALIZE ELEMENT STATUS command to the changer
++ at insmod time (default: 1).
++
++timeout_init=<seconds>
++ timeout for the INITIALIZE ELEMENT STATUS command
++ (default: 3600).
++
++timeout_move=<seconds>
++ timeout for all other commands (default: 120).
++
++dt_id=<id1>,<id2>,...
++dt_lun=<lun1>,<lun2>,...
++ These two allow to specify the SCSI ID and LUN for the data
++ transfer elements. You likely don't need this as the jukebox
++ should provide this information. But some devices don't ...
++
++vendor_firsts=
++vendor_counts=
++vendor_labels=
++ These insmod options can be used to tell the driver that there
++ are some vendor-specific element types. Grundig for example
++ does this. Some jukeboxes have a printer to label fresh burned
++ CDs, which is addressed as element 0xc000 (type 5). To tell the
++ driver about this vendor-specific element, use this:
++ $ insmod ch \
++ vendor_firsts=0xc000 \
++ vendor_counts=1 \
++ vendor_labels=printer
++ All three insmod options accept up to four comma-separated
++ values, this way you can configure the element types 5-8.
++ You likely need the SCSI specs for the device in question to
++ find the correct values as they are not covered by the SCSI-2
++ standard.
++
++
++Credits
++-------
++
++I wrote this driver using the famous mailing-patches-around-the-world
++method. With (more or less) help from:
++
++ Daniel Moehwald <moehwald@hdg.de>
++ Dane Jasper <dane@sonic.net>
++ R. Scott Bailey <sbailey@dsddi.eds.com>
++ Jonathan Corbet <corbet@atd.ucar.edu>
++
++Special thanks go to
++ Martin Kuehne <martin.kuehne@bnbt.de>
++for a old, second-hand (but full functional) cdrom jukebox which I use
++to develop/test driver and tools now.
++
++Have fun,
++
++ Gerd
++
++--
++Gerd Knorr <kraxel@bytesex.org>
+diff -puN /dev/null drivers/scsi/ch.c
+--- /dev/null Thu Apr 11 07:25:15 2002
++++ 25-akpm/drivers/scsi/ch.c Thu Feb 17 16:55:14 2005
+@@ -0,0 +1,1020 @@
++/*
++ * SCSI Media Changer device driver for Linux 2.6
++ *
++ * (c) 1996-2003 Gerd Knorr <kraxel@bytesex.org>
++ *
++ */
++
++#define VERSION "0.24"
++
++#include <linux/config.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/fs.h>
++#include <linux/kernel.h>
++#include <linux/sched.h>
++#include <linux/mm.h>
++#include <linux/major.h>
++#include <linux/string.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/blkdev.h>
++#include <linux/completion.h>
++#include <linux/devfs_fs_kernel.h>
++#include <linux/ioctl32.h>
++#include <linux/compat.h>
++#include <linux/chio.h> /* here are all the ioctls */
++
++#include <scsi/scsi.h>
++#include <scsi/scsi_cmnd.h>
++#include <scsi/scsi_driver.h>
++#include <scsi/scsi_ioctl.h>
++#include <scsi/scsi_host.h>
++#include <scsi/scsi_device.h>
++#include <scsi/scsi_request.h>
++#include <scsi/scsi_dbg.h>
++
++#define CH_DT_MAX 16
++#define CH_TYPES 8
++
++MODULE_DESCRIPTION("device driver for scsi media changer devices");
++MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org>");
++MODULE_LICENSE("GPL");
++
++static int init = 1;
++module_param(init, int, 0444);
++MODULE_PARM_DESC(init, \
++ "initialize element status on driver load (default: on)");
++
++static int timeout_move = 300;
++module_param(timeout_move, int, 0644);
++MODULE_PARM_DESC(timeout_move,"timeout for move commands "
++ "(default: 300 seconds)");
++
++static int timeout_init = 3600;
++module_param(timeout_init, int, 0644);
++MODULE_PARM_DESC(timeout_init,"timeout for INITIALIZE ELEMENT STATUS "
++ "(default: 3600 seconds)");
++
++static int verbose = 1;
++module_param(verbose, int, 0644);
++MODULE_PARM_DESC(verbose,"be verbose (default: on)");
++
++static int debug = 0;
++module_param(debug, int, 0644);
++MODULE_PARM_DESC(debug,"enable/disable debug messages, also prints more "
++ "detailed sense codes on scsi errors (default: off)");
++
++static int dt_id[CH_DT_MAX] = { [ 0 ... (CH_DT_MAX-1) ] = -1 };
++static int dt_lun[CH_DT_MAX];
++module_param_array(dt_id, int, NULL, 0444);
++module_param_array(dt_lun, int, NULL, 0444);
++
++/* tell the driver about vendor-specific slots */
++static int vendor_firsts[CH_TYPES-4];
++static int vendor_counts[CH_TYPES-4];
++module_param_array(vendor_firsts, int, NULL, 0444);
++module_param_array(vendor_counts, int, NULL, 0444);
++
++static char *vendor_labels[CH_TYPES-4] = {
++ "v0", "v1", "v2", "v3"
++};
++// module_param_string_array(vendor_labels, NULL, 0444);
++
++#define dprintk(fmt, arg...) if (debug) \
++ printk(KERN_DEBUG "%s: " fmt, ch->name, ##arg)
++#define vprintk(fmt, arg...) if (verbose) \
++ printk(KERN_INFO "%s: " fmt, ch->name, ##arg)
++
++/* ------------------------------------------------------------------- */
++
++#define MAX_RETRIES 1
++
++static int ch_probe(struct device *);
++static int ch_remove(struct device *);
++static int ch_open(struct inode * inode, struct file * filp);
++static int ch_release(struct inode * inode, struct file * filp);
++static int ch_ioctl(struct inode * inode, struct file * filp,
++ unsigned int cmd, unsigned long arg);
++static long ch_ioctl_compat(struct file * filp,
++ unsigned int cmd, unsigned long arg);
++
++typedef struct {
++ struct list_head list;
++ int minor;
++ char name[8];
++ struct scsi_device *device;
++ struct scsi_device **dt; /* ptrs to data transfer elements */
++ u_int firsts[CH_TYPES];
++ u_int counts[CH_TYPES];
++ u_int unit_attention;
++ u_int voltags;
++ struct semaphore lock;
++} scsi_changer;
++
++static LIST_HEAD(ch_devlist);
++static spinlock_t ch_devlist_lock = SPIN_LOCK_UNLOCKED;
++static int ch_devcount;
++
++struct scsi_driver ch_template =
++{
++ .owner = THIS_MODULE,
++ .gendrv = {
++ .name = "ch",
++ .probe = ch_probe,
++ .remove = ch_remove,
++ },
++};
++
++static struct file_operations changer_fops =
++{
++ .owner = THIS_MODULE,
++ .open = ch_open,
++ .release = ch_release,
++ .ioctl = ch_ioctl,
++#ifdef CONFIG_COMPAT
++ .compat_ioctl = ch_ioctl_compat,
++#endif
++};
++
++static struct {
++ unsigned char sense;
++ unsigned char asc;
++ unsigned char ascq;
++ int errno;
++} err[] = {
++/* Just filled in what looks right. Hav'nt checked any standard paper for
++ these errno assignments, so they may be wrong... */
++ {
++ .sense = ILLEGAL_REQUEST,
++ .asc = 0x21,
++ .ascq = 0x01,
++ .errno = EBADSLT, /* Invalid element address */
++ },{
++ .sense = ILLEGAL_REQUEST,
++ .asc = 0x28,
++ .ascq = 0x01,
++ .errno = EBADE, /* Import or export element accessed */
++ },{
++ .sense = ILLEGAL_REQUEST,
++ .asc = 0x3B,
++ .ascq = 0x0D,
++ .errno = EXFULL, /* Medium destination element full */
++ },{
++ .sense = ILLEGAL_REQUEST,
++ .asc = 0x3B,
++ .ascq = 0x0E,
++ .errno = EBADE, /* Medium source element empty */
++ },{
++ .sense = ILLEGAL_REQUEST,
++ .asc = 0x20,
++ .ascq = 0x00,
++ .errno = EBADRQC, /* Invalid command operation code */
++ },{
++ /* end of list */
++ }
++};
++
++/* ------------------------------------------------------------------- */
++
++static int ch_find_errno(unsigned char *sense_buffer)
++{
++ int i,errno = 0;
++
++ /* Check to see if additional sense information is available */
++ if (sense_buffer[7] > 5 &&
++ sense_buffer[12] != 0) {
++ for (i = 0; err[i].errno != 0; i++) {
++ if (err[i].sense == sense_buffer[ 2] &&
++ err[i].asc == sense_buffer[12] &&
++ err[i].ascq == sense_buffer[13]) {
++ errno = -err[i].errno;
++ break;
++ }
++ }
++ }
++ if (errno == 0)
++ errno = -EIO;
++ return errno;
++}
++
++static void
++ch_request_done(struct scsi_cmnd *sc)
++{
++ sc->request->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */
++ if (sc->request->waiting != NULL)
++ complete(sc->request->waiting);
++}
++
++static int
++ch_do_scsi(scsi_changer *ch, unsigned char *cmd,
++ void *buffer, unsigned buflength)
++{
++ int errno, retries = 0, timeout;
++ DECLARE_COMPLETION(wait);
++ struct scsi_request *sr;
++
++ sr = scsi_allocate_request(ch->device, GFP_KERNEL);
++ if (NULL == sr)
++ return -ENOMEM;
++
++ retry:
++ errno = 0;
++ if (debug) {
++ dprintk("command: ");
++ __scsi_print_command(cmd);
++ }
++
++ sr->sr_request->waiting = &wait;
++ timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
++ ? timeout_init : timeout_move;
++ scsi_do_req(sr, cmd, buffer, buflength, ch_request_done,
++ timeout * HZ, MAX_RETRIES);
++ wait_for_completion(&wait);
++ sr->sr_request->waiting = NULL;
++
++ dprintk("result: 0x%x\n",sr->sr_result);
++ if (driver_byte(sr->sr_result) != 0) {
++ if (debug)
++ scsi_print_req_sense(ch->name, sr);
++ errno = ch_find_errno(sr->sr_sense_buffer);
++
++ switch(sr->sr_sense_buffer[2] & 0xf) {
++ case UNIT_ATTENTION:
++ ch->unit_attention = 1;
++ if (retries++ < 3)
++ goto retry;
++ break;
++ }
++ }
++ scsi_release_request(sr);
++ return errno;
++}
++
++/* ------------------------------------------------------------------------ */
++
++static int
++ch_elem_to_typecode(scsi_changer *ch, u_int elem)
++{
++ int i;
++
++ for (i = 0; i < CH_TYPES; i++) {
++ if (elem >= ch->firsts[i] &&
++ elem < ch->firsts[i] +
++ ch->counts[i])
++ return i+1;
++ }
++ return 0;
++}
++
++static int
++ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
++{
++ u_char cmd[12];
++ u_char *buffer;
++ int result;
++
++ buffer = kmalloc(512, GFP_KERNEL);
++ if(!buffer)
++ return -ENOMEM;
++
++ retry:
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = READ_ELEMENT_STATUS;
++ cmd[1] = (ch->device->lun << 5) |
++ (ch->voltags ? 0x10 : 0) |
++ ch_elem_to_typecode(ch,elem);
++ cmd[2] = (elem >> 8) & 0xff;
++ cmd[3] = elem & 0xff;
++ cmd[5] = 1;
++ cmd[9] = 255;
++ if (0 == (result = ch_do_scsi(ch, cmd, buffer, 256))) {
++ if (((buffer[16] << 8) | buffer[17]) != elem) {
++ dprintk("asked for element 0x%02x, got 0x%02x\n",
++ elem,(buffer[16] << 8) | buffer[17]);
++ kfree(buffer);
++ return -EIO;
++ }
++ memcpy(data,buffer+16,16);
++ } else {
++ if (ch->voltags) {
++ ch->voltags = 0;
++ vprintk("device has no volume tag support%s\n","");
++ goto retry;
++ }
++ dprintk("READ ELEMENT STATUS for element 0x%x failed\n",elem);
++ }
++ kfree(buffer);
++ return result;
++}
++
++static int
++ch_init_elem(scsi_changer *ch)
++{
++ int err;
++ u_char cmd[6];
++
++ vprintk("INITIALIZE ELEMENT STATUS, may take some time ...%s\n","");
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = INITIALIZE_ELEMENT_STATUS;
++ cmd[1] = ch->device->lun << 5;
++ err = ch_do_scsi(ch, cmd, NULL, 0);
++ vprintk("... finished%s\n","");
++ return err;
++}
++
++static int
++ch_readconfig(scsi_changer *ch)
++{
++ u_char cmd[10], data[16];
++ u_char *buffer;
++ int result,id,lun,i;
++ u_int elem;
++
++ buffer = kmalloc(512, GFP_KERNEL);
++ if (!buffer)
++ return -ENOMEM;
++ memset(buffer,0,512);
++
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = MODE_SENSE;
++ cmd[1] = ch->device->lun << 5;
++ cmd[2] = 0x1d;
++ cmd[4] = 255;
++ result = ch_do_scsi(ch, cmd, buffer, 255);
++ if (0 != result) {
++ cmd[1] |= (1<<3);
++ result = ch_do_scsi(ch, cmd, buffer, 255);
++ }
++ if (0 == result) {
++ ch->firsts[CHET_MT] =
++ (buffer[buffer[3]+ 6] << 8) | buffer[buffer[3]+ 7];
++ ch->counts[CHET_MT] =
++ (buffer[buffer[3]+ 8] << 8) | buffer[buffer[3]+ 9];
++ ch->firsts[CHET_ST] =
++ (buffer[buffer[3]+10] << 8) | buffer[buffer[3]+11];
++ ch->counts[CHET_ST] =
++ (buffer[buffer[3]+12] << 8) | buffer[buffer[3]+13];
++ ch->firsts[CHET_IE] =
++ (buffer[buffer[3]+14] << 8) | buffer[buffer[3]+15];
++ ch->counts[CHET_IE] =
++ (buffer[buffer[3]+16] << 8) | buffer[buffer[3]+17];
++ ch->firsts[CHET_DT] =
++ (buffer[buffer[3]+18] << 8) | buffer[buffer[3]+19];
++ ch->counts[CHET_DT] =
++ (buffer[buffer[3]+20] << 8) | buffer[buffer[3]+21];
++ vprintk("type #1 (mt): 0x%x+%d [medium transport]\n",
++ ch->firsts[CHET_MT],
++ ch->counts[CHET_MT]);
++ vprintk("type #2 (st): 0x%x+%d [storage]\n",
++ ch->firsts[CHET_ST],
++ ch->counts[CHET_ST]);
++ vprintk("type #3 (ie): 0x%x+%d [import/export]\n",
++ ch->firsts[CHET_IE],
++ ch->counts[CHET_IE]);
++ vprintk("type #4 (dt): 0x%x+%d [data transfer]\n",
++ ch->firsts[CHET_DT],
++ ch->counts[CHET_DT]);
++ } else {
++ vprintk("reading element address assigment page failed!%s\n",
++ "");
++ }
++
++ /* vendor specific element types */
++ for (i = 0; i < 4; i++) {
++ if (0 == vendor_counts[i])
++ continue;
++ if (NULL == vendor_labels[i])
++ continue;
++ ch->firsts[CHET_V1+i] = vendor_firsts[i];
++ ch->counts[CHET_V1+i] = vendor_counts[i];
++ vprintk("type #%d (v%d): 0x%x+%d [%s, vendor specific]\n",
++ i+5,i+1,vendor_firsts[i],vendor_counts[i],
++ vendor_labels[i]);
++ }
++
++ /* look up the devices of the data transfer elements */
++ ch->dt = kmalloc(ch->counts[CHET_DT]*sizeof(struct scsi_device),
++ GFP_KERNEL);
++ for (elem = 0; elem < ch->counts[CHET_DT]; elem++) {
++ id = -1;
++ lun = 0;
++ if (-1 != dt_id[elem]) {
++ id = dt_id[elem];
++ lun = dt_lun[elem];
++ vprintk("dt 0x%x: [insmod option] ",
++ elem+ch->firsts[CHET_DT]);
++ } else if (0 != ch_read_element_status
++ (ch,elem+ch->firsts[CHET_DT],data)) {
++ vprintk("dt 0x%x: READ ELEMENT STATUS failed\n",
++ elem+ch->firsts[CHET_DT]);
++ } else {
++ vprintk("dt 0x%x: ",elem+ch->firsts[CHET_DT]);
++ if (data[6] & 0x80) {
++ if (verbose)
++ printk("not this SCSI bus\n");
++ ch->dt[elem] = NULL;
++ } else if (0 == (data[6] & 0x30)) {
++ if (verbose)
++ printk("ID/LUN unknown\n");
++ ch->dt[elem] = NULL;
++ } else {
++ id = ch->device->id;
++ lun = 0;
++ if (data[6] & 0x20) id = data[7];
++ if (data[6] & 0x10) lun = data[6] & 7;
++ }
++ }
++ if (-1 != id) {
++ if (verbose)
++ printk("ID %i, LUN %i, ",id,lun);
++ ch->dt[elem] =
++ scsi_device_lookup(ch->device->host,
++ ch->device->channel,
++ id,lun);
++ if (!ch->dt[elem]) {
++ /* should not happen */
++ if (verbose)
++ printk("Huh? device not found!\n");
++ } else {
++ if (verbose)
++ printk("name: %8.8s %16.16s %4.4s\n",
++ ch->dt[elem]->vendor,
++ ch->dt[elem]->model,
++ ch->dt[elem]->rev);
++ }
++ }
++ }
++ ch->voltags = 1;
++ kfree(buffer);
++
++ return 0;
++}
++
++/* ------------------------------------------------------------------------ */
++
++static int
++ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate)
++{
++ u_char cmd[10];
++
++ dprintk("position: 0x%x\n",elem);
++ if (0 == trans)
++ trans = ch->firsts[CHET_MT];
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = POSITION_TO_ELEMENT;
++ cmd[1] = ch->device->lun << 5;
++ cmd[2] = (trans >> 8) & 0xff;
++ cmd[3] = trans & 0xff;
++ cmd[4] = (elem >> 8) & 0xff;
++ cmd[5] = elem & 0xff;
++ cmd[8] = rotate ? 1 : 0;
++ return ch_do_scsi(ch, cmd, NULL,0);
++}
++
++static int
++ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate)
++{
++ u_char cmd[12];
++
++ dprintk("move: 0x%x => 0x%x\n",src,dest);
++ if (0 == trans)
++ trans = ch->firsts[CHET_MT];
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = MOVE_MEDIUM;
++ cmd[1] = ch->device->lun << 5;
++ cmd[2] = (trans >> 8) & 0xff;
++ cmd[3] = trans & 0xff;
++ cmd[4] = (src >> 8) & 0xff;
++ cmd[5] = src & 0xff;
++ cmd[6] = (dest >> 8) & 0xff;
++ cmd[7] = dest & 0xff;
++ cmd[10] = rotate ? 1 : 0;
++ return ch_do_scsi(ch, cmd, NULL,0);
++}
++
++static int
++ch_exchange(scsi_changer *ch, u_int trans, u_int src,
++ u_int dest1, u_int dest2, int rotate1, int rotate2)
++{
++ u_char cmd[12];
++
++ dprintk("exchange: 0x%x => 0x%x => 0x%x\n",
++ src,dest1,dest2);
++ if (0 == trans)
++ trans = ch->firsts[CHET_MT];
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = EXCHANGE_MEDIUM;
++ cmd[1] = ch->device->lun << 5;
++ cmd[2] = (trans >> 8) & 0xff;
++ cmd[3] = trans & 0xff;
++ cmd[4] = (src >> 8) & 0xff;
++ cmd[5] = src & 0xff;
++ cmd[6] = (dest1 >> 8) & 0xff;
++ cmd[7] = dest1 & 0xff;
++ cmd[8] = (dest2 >> 8) & 0xff;
++ cmd[9] = dest2 & 0xff;
++ cmd[10] = (rotate1 ? 1 : 0) | (rotate2 ? 2 : 0);
++
++ return ch_do_scsi(ch, cmd, NULL,0);
++}
++
++static void
++ch_check_voltag(char *tag)
++{
++ int i;
++
++ for (i = 0; i < 32; i++) {
++ /* restrict to ascii */
++ if (tag[i] >= 0x7f || tag[i] < 0x20)
++ tag[i] = ' ';
++ /* don't allow search wildcards */
++ if (tag[i] == '?' ||
++ tag[i] == '*')
++ tag[i] = ' ';
++ }
++}
++
++static int
++ch_set_voltag(scsi_changer *ch, u_int elem,
++ int alternate, int clear, u_char *tag)
++{
++ u_char cmd[12];
++ u_char *buffer;
++ int result;
++
++ buffer = kmalloc(512, GFP_KERNEL);
++ if (!buffer)
++ return -ENOMEM;
++ memset(buffer,0,512);
++
++ dprintk("%s %s voltag: 0x%x => \"%s\"\n",
++ clear ? "clear" : "set",
++ alternate ? "alternate" : "primary",
++ elem, tag);
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = SEND_VOLUME_TAG;
++ cmd[1] = (ch->device->lun << 5) |
++ ch_elem_to_typecode(ch,elem);
++ cmd[2] = (elem >> 8) & 0xff;
++ cmd[3] = elem & 0xff;
++ cmd[5] = clear
++ ? (alternate ? 0x0d : 0x0c)
++ : (alternate ? 0x0b : 0x0a);
++
++ cmd[9] = 255;
++
++ memcpy(buffer,tag,32);
++ ch_check_voltag(buffer);
++
++ result = ch_do_scsi(ch, cmd, buffer, 256);
++ kfree(buffer);
++ return result;
++}
++
++static int ch_gstatus(scsi_changer *ch, int type, unsigned char *dest)
++{
++ int retval = 0;
++ u_char data[16];
++ unsigned int i;
++
++ down(&ch->lock);
++ for (i = 0; i < ch->counts[type]; i++) {
++ if (0 != ch_read_element_status
++ (ch, ch->firsts[type]+i,data)) {
++ retval = -EIO;
++ break;
++ }
++ put_user(data[2], dest+i);
++ if (data[2] & CESTATUS_EXCEPT)
++ vprintk("element 0x%x: asc=0x%x, ascq=0x%x\n",
++ ch->firsts[type]+i,
++ (int)data[4],(int)data[5]);
++ retval = ch_read_element_status
++ (ch, ch->firsts[type]+i,data);
++ if (0 != retval)
++ break;
++ }
++ up(&ch->lock);
++ return retval;
++}
++
++/* ------------------------------------------------------------------------ */
++
++static int
++ch_release(struct inode *inode, struct file *file)
++{
++ scsi_changer *ch = file->private_data;
++
++ scsi_device_put(ch->device);
++ file->private_data = NULL;
++ return 0;
++}
++
++static int
++ch_open(struct inode *inode, struct file *file)
++{
++ scsi_changer *tmp, *ch;
++ int minor = iminor(inode);
++
++ spin_lock(&ch_devlist_lock);
++ ch = NULL;
++ list_for_each_entry(tmp,&ch_devlist,list) {
++ if (tmp->minor == minor)
++ ch = tmp;
++ }
++ if (NULL == ch || scsi_device_get(ch->device)) {
++ spin_unlock(&ch_devlist_lock);
++ return -ENXIO;
++ }
++ spin_unlock(&ch_devlist_lock);
++
++ file->private_data = ch;
++ return 0;
++}
++
++static int
++ch_checkrange(scsi_changer *ch, unsigned int type, unsigned int unit)
++{
++ if (type >= CH_TYPES || unit >= ch->counts[type])
++ return -1;
++ return 0;
++}
++
++static int ch_ioctl(struct inode * inode, struct file * file,
++ unsigned int cmd, unsigned long arg)
++{
++ scsi_changer *ch = file->private_data;
++ int retval;
++
++ switch (cmd) {
++ case CHIOGPARAMS:
++ {
++ struct changer_params params;
++
++ params.cp_curpicker = 0;
++ params.cp_npickers = ch->counts[CHET_MT];
++ params.cp_nslots = ch->counts[CHET_ST];
++ params.cp_nportals = ch->counts[CHET_IE];
++ params.cp_ndrives = ch->counts[CHET_DT];
++
++ if (copy_to_user((void *) arg, ¶ms, sizeof(params)))
++ return -EFAULT;
++ return 0;
++ }
++ case CHIOGVPARAMS:
++ {
++ struct changer_vendor_params vparams;
++
++ memset(&vparams,0,sizeof(vparams));
++ if (ch->counts[CHET_V1]) {
++ vparams.cvp_n1 = ch->counts[CHET_V1];
++ strncpy(vparams.cvp_label1,vendor_labels[0],16);
++ }
++ if (ch->counts[CHET_V2]) {
++ vparams.cvp_n2 = ch->counts[CHET_V2];
++ strncpy(vparams.cvp_label2,vendor_labels[1],16);
++ }
++ if (ch->counts[CHET_V3]) {
++ vparams.cvp_n3 = ch->counts[CHET_V3];
++ strncpy(vparams.cvp_label3,vendor_labels[2],16);
++ }
++ if (ch->counts[CHET_V4]) {
++ vparams.cvp_n4 = ch->counts[CHET_V4];
++ strncpy(vparams.cvp_label4,vendor_labels[3],16);
++ }
++ if (copy_to_user((void *) arg, &vparams, sizeof(vparams)))
++ return -EFAULT;
++ return 0;
++ }
++
++ case CHIOPOSITION:
++ {
++ struct changer_position pos;
++
++ if (copy_from_user(&pos, (void*)arg, sizeof (pos)))
++ return -EFAULT;
++
++ if (0 != ch_checkrange(ch, pos.cp_type, pos.cp_unit)) {
++ dprintk("CHIOPOSITION: invalid parameter%s\n","");
++ return -EBADSLT;
++ }
++ down(&ch->lock);
++ retval = ch_position(ch,0,
++ ch->firsts[pos.cp_type] + pos.cp_unit,
++ pos.cp_flags & CP_INVERT);
++ up(&ch->lock);
++ return retval;
++ }
++
++ case CHIOMOVE:
++ {
++ struct changer_move mv;
++
++ if (copy_from_user(&mv, (void*)arg, sizeof (mv)))
++ return -EFAULT;
++
++ if (0 != ch_checkrange(ch, mv.cm_fromtype, mv.cm_fromunit) ||
++ 0 != ch_checkrange(ch, mv.cm_totype, mv.cm_tounit )) {
++ dprintk("CHIOMOVE: invalid parameter%s\n","");
++ return -EBADSLT;
++ }
++
++ down(&ch->lock);
++ retval = ch_move(ch,0,
++ ch->firsts[mv.cm_fromtype] + mv.cm_fromunit,
++ ch->firsts[mv.cm_totype] + mv.cm_tounit,
++ mv.cm_flags & CM_INVERT);
++ up(&ch->lock);
++ return retval;
++ }
++
++ case CHIOEXCHANGE:
++ {
++ struct changer_exchange mv;
++
++ if (copy_from_user(&mv, (void*)arg, sizeof (mv)))
++ return -EFAULT;
++
++ if (0 != ch_checkrange(ch, mv.ce_srctype, mv.ce_srcunit ) ||
++ 0 != ch_checkrange(ch, mv.ce_fdsttype, mv.ce_fdstunit) ||
++ 0 != ch_checkrange(ch, mv.ce_sdsttype, mv.ce_sdstunit)) {
++ dprintk("CHIOEXCHANGE: invalid parameter%s\n","");
++ return -EBADSLT;
++ }
++
++ down(&ch->lock);
++ retval = ch_exchange
++ (ch,0,
++ ch->firsts[mv.ce_srctype] + mv.ce_srcunit,
++ ch->firsts[mv.ce_fdsttype] + mv.ce_fdstunit,
++ ch->firsts[mv.ce_sdsttype] + mv.ce_sdstunit,
++ mv.ce_flags & CE_INVERT1, mv.ce_flags & CE_INVERT2);
++ up(&ch->lock);
++ return retval;
++ }
++
++ case CHIOGSTATUS:
++ {
++ struct changer_element_status ces;
++
++ if (copy_from_user(&ces, (void*)arg, sizeof (ces)))
++ return -EFAULT;
++ if (ces.ces_type < 0 || ces.ces_type >= CH_TYPES)
++ return -EINVAL;
++
++ return ch_gstatus(ch, ces.ces_type, ces.ces_data);
++ }
++
++ case CHIOGELEM:
++ {
++ struct changer_get_element cge;
++ u_char cmd[12];
++ u_char *buffer;
++ unsigned int elem;
++ int result,i;
++
++ if (copy_from_user(&cge, (void*)arg, sizeof (cge)))
++ return -EFAULT;
++
++ if (0 != ch_checkrange(ch, cge.cge_type, cge.cge_unit))
++ return -EINVAL;
++ elem = ch->firsts[cge.cge_type] + cge.cge_unit;
++
++ buffer = kmalloc(512, GFP_KERNEL);
++ if (!buffer)
++ return -ENOMEM;
++ down(&ch->lock);
++
++ voltag_retry:
++ memset(cmd,0,sizeof(cmd));
++ cmd[0] = READ_ELEMENT_STATUS;
++ cmd[1] = (ch->device->lun << 5) |
++ (ch->voltags ? 0x10 : 0) |
++ ch_elem_to_typecode(ch,elem);
++ cmd[2] = (elem >> 8) & 0xff;
++ cmd[3] = elem & 0xff;
++ cmd[5] = 1;
++ cmd[9] = 255;
++
++ if (0 == (result = ch_do_scsi(ch, cmd, buffer, 256))) {
++ cge.cge_status = buffer[18];
++ cge.cge_flags = 0;
++ if (buffer[18] & CESTATUS_EXCEPT) {
++ /* FIXME: fill cge_errno */
++ }
++ if (buffer[25] & 0x80) {
++ cge.cge_flags |= CGE_SRC;
++ if (buffer[25] & 0x40)
++ cge.cge_flags |= CGE_INVERT;
++ elem = (buffer[26]<<8) | buffer[27];
++ for (i = 0; i < 4; i++) {
++ if (elem >= ch->firsts[i] &&
++ elem < ch->firsts[i] + ch->counts[i]) {
++ cge.cge_srctype = i;
++ cge.cge_srcunit = elem-ch->firsts[i];
++ }
++ }
++ }
++ if ((buffer[22] & 0x30) == 0x30) {
++ cge.cge_flags |= CGE_IDLUN;
++ cge.cge_id = buffer[23];
++ cge.cge_lun = buffer[22] & 7;
++ }
++ if (buffer[9] & 0x80) {
++ cge.cge_flags |= CGE_PVOLTAG;
++ memcpy(cge.cge_pvoltag,buffer+28,36);
++ }
++ if (buffer[9] & 0x40) {
++ cge.cge_flags |= CGE_AVOLTAG;
++ memcpy(cge.cge_avoltag,buffer+64,36);
++ }
++ } else if (ch->voltags) {
++ ch->voltags = 0;
++ vprintk("device has no volume tag support%s\n","");
++ goto voltag_retry;
++ }
++ kfree(buffer);
++ up(&ch->lock);
++
++ if (copy_to_user((void*)arg, &cge, sizeof (cge)))
++ return -EFAULT;
++ return result;
++ }
++
++ case CHIOINITELEM:
++ {
++ down(&ch->lock);
++ retval = ch_init_elem(ch);
++ up(&ch->lock);
++ return retval;
++ }
++
++ case CHIOSVOLTAG:
++ {
++ struct changer_set_voltag csv;
++ int elem;
++
++ if (copy_from_user(&csv, (void*)arg, sizeof(csv)))
++ return -EFAULT;
++
++ if (0 != ch_checkrange(ch, csv.csv_type, csv.csv_unit)) {
++ dprintk("CHIOSVOLTAG: invalid parameter%s\n","");
++ return -EBADSLT;
++ }
++ elem = ch->firsts[csv.csv_type] + csv.csv_unit;
++ down(&ch->lock);
++ retval = ch_set_voltag(ch, elem,
++ csv.csv_flags & CSV_AVOLTAG,
++ csv.csv_flags & CSV_CLEARTAG,
++ csv.csv_voltag);
++ up(&ch->lock);
++ return retval;
++ }
++
++ default:
++ return scsi_ioctl(ch->device, cmd, (void*)arg);
++
++ }
++}
++
++#ifdef CONFIG_COMPAT
++
++struct changer_element_status32 {
++ int ces_type;
++ compat_uptr_t ces_data;
++};
++#define CHIOGSTATUS32 _IOW('c', 8,struct changer_element_status32)
++
++static long ch_ioctl_compat(struct file * file,
++ unsigned int cmd, unsigned long arg)
++{
++ scsi_changer *ch = file->private_data;
++
++ switch (cmd) {
++ case CHIOGPARAMS:
++ case CHIOGVPARAMS:
++ case CHIOPOSITION:
++ case CHIOMOVE:
++ case CHIOEXCHANGE:
++ case CHIOGELEM:
++ case CHIOINITELEM:
++ case CHIOSVOLTAG:
++ /* compatible */
++ return ch_ioctl(NULL /* inode, unused */,
++ file, cmd, arg);
++ case CHIOGSTATUS32:
++ {
++ struct changer_element_status32 ces32;
++ unsigned char *data;
++
++ if (copy_from_user(&ces32, (void*)arg, sizeof (ces32)))
++ return -EFAULT;
++ if (ces32.ces_type < 0 || ces32.ces_type >= CH_TYPES)
++ return -EINVAL;
++
++ data = compat_ptr(ces32.ces_data);
++ return ch_gstatus(ch, ces32.ces_type, data);
++ }
++ default:
++ // return scsi_ioctl_compat(ch->device, cmd, (void*)arg);
++ return -ENOIOCTLCMD;
++
++ }
++}
++#endif
++
++/* ------------------------------------------------------------------------ */
++
++static int ch_probe(struct device *dev)
++{
++ struct scsi_device *sd = to_scsi_device(dev);
++ scsi_changer *ch;
++
++ if (sd->type != TYPE_MEDIUM_CHANGER)
++ return -ENODEV;
++
++ ch = kmalloc(sizeof(*ch), GFP_KERNEL);
++ if (NULL == ch)
++ return -ENOMEM;
++
++ memset(ch,0,sizeof(*ch));
++ ch->minor = ch_devcount;
++ sprintf(ch->name,"ch%d",ch->minor);
++ init_MUTEX(&ch->lock);
++ ch->device = sd;
++ ch_readconfig(ch);
++ if (init)
++ ch_init_elem(ch);
++
++ devfs_mk_cdev(MKDEV(SCSI_CHANGER_MAJOR,ch->minor),
++ S_IFCHR | S_IRUGO | S_IWUGO, ch->name);
++
++ printk(KERN_INFO "Attached scsi changer %s "
++ "at scsi%d, channel %d, id %d, lun %d\n",
++ ch->name, sd->host->host_no, sd->channel, sd->id, sd->lun);
++
++ spin_lock(&ch_devlist_lock);
++ list_add_tail(&ch->list,&ch_devlist);
++ ch_devcount++;
++ spin_unlock(&ch_devlist_lock);
++ return 0;
++}
++
++static int ch_remove(struct device *dev)
++{
++ struct scsi_device *sd = to_scsi_device(dev);
++ scsi_changer *tmp, *ch;
++
++ spin_lock(&ch_devlist_lock);
++ ch = NULL;
++ list_for_each_entry(tmp,&ch_devlist,list) {
++ if (tmp->device == sd)
++ ch = tmp;
++ }
++ BUG_ON(NULL == ch);
++ list_del(&ch->list);
++ spin_unlock(&ch_devlist_lock);
++
++ devfs_remove(ch->name);
++ kfree(ch->dt);
++ kfree(ch);
++ ch_devcount--;
++ return 0;
++}
++
++static int __init init_ch_module(void)
++{
++ int rc;
++
++ printk(KERN_INFO "SCSI Media Changer driver v" VERSION " \n");
++ rc = register_chrdev(SCSI_CHANGER_MAJOR,"ch",&changer_fops);
++ if (rc < 0) {
++ printk("Unable to get major %d for SCSI-Changer\n",
++ SCSI_CHANGER_MAJOR);
++ return rc;
++ }
++ rc = scsi_register_driver(&ch_template.gendrv);
++ if (rc < 0)
++ goto fail1;
++ return 0;
++
++ fail1:
++ unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
++ return rc;
++}
++
++static void __exit exit_ch_module(void)
++{
++ scsi_unregister_driver(&ch_template.gendrv);
++ unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
++}
++
++module_init(init_ch_module);
++module_exit(exit_ch_module);
++
++/*
++ * Local variables:
++ * c-basic-offset: 8
++ * End:
++ */
+diff -puN drivers/scsi/Kconfig~add-scsi-changer-driver drivers/scsi/Kconfig
+--- 25/drivers/scsi/Kconfig~add-scsi-changer-driver Thu Feb 17 16:55:13 2005
++++ 25-akpm/drivers/scsi/Kconfig Thu Feb 17 16:55:13 2005
+@@ -137,6 +137,24 @@ config CHR_DEV_SG
+
+ If unsure, say N.
+
++config CHR_DEV_SCH
++ tristate "SCSI media changer support"
++ depends on SCSI
++ ---help---
++ This is a driver for SCSI media changers. Most common devices are
++ tape libraries and MOD/CDROM jukeboxes. *Real* jukeboxes, you
++ don't need this for those tiny 6-slot cdrom changers. Media
++ changers are listed as "Type: Medium Changer" in /proc/scsi/scsi.
++ If you have such hardware and want to use it with linux, say Y
++ here. Check <file:Documentation/scsi-changer.txt> for details.
++
++ If you want to compile this as a module ( = code which can be
++ inserted in and removed from the running kernel whenever you want),
++ say M here and read <file:Documentation/modules.txt> and
++ <file:Documentation/scsi.txt>. The module will be called ch.o.
++ If unsure, say N.
++
++
+ comment "Some SCSI devices (e.g. CD jukebox) support multiple LUNs"
+ depends on SCSI
+
+diff -puN drivers/scsi/Makefile~add-scsi-changer-driver drivers/scsi/Makefile
+--- 25/drivers/scsi/Makefile~add-scsi-changer-driver Thu Feb 17 16:55:13 2005
++++ 25-akpm/drivers/scsi/Makefile Thu Feb 17 16:55:13 2005
+@@ -141,6 +141,7 @@ obj-$(CONFIG_CHR_DEV_OSST) += osst.o
+ obj-$(CONFIG_BLK_DEV_SD) += sd_mod.o
+ obj-$(CONFIG_BLK_DEV_SR) += sr_mod.o
+ obj-$(CONFIG_CHR_DEV_SG) += sg.o
++obj-$(CONFIG_CHR_DEV_SCH) += ch.o
+
+ scsi_mod-y += scsi.o hosts.o scsi_ioctl.o constants.o \
+ scsicam.o scsi_error.o scsi_lib.o \
+diff -puN /dev/null include/linux/chio.h
+--- /dev/null Thu Apr 11 07:25:15 2002
++++ 25-akpm/include/linux/chio.h Thu Feb 17 16:55:14 2005
+@@ -0,0 +1,168 @@
++/*
++ * ioctl interface for the scsi media changer driver
++ */
++
++/* changer element types */
++#define CHET_MT 0 /* media transport element (robot) */
++#define CHET_ST 1 /* storage element (media slots) */
++#define CHET_IE 2 /* import/export element */
++#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */
++#define CHET_V1 4 /* vendor specific #1 */
++#define CHET_V2 5 /* vendor specific #2 */
++#define CHET_V3 6 /* vendor specific #3 */
++#define CHET_V4 7 /* vendor specific #4 */
++
++
++/*
++ * CHIOGPARAMS
++ * query changer properties
++ *
++ * CHIOVGPARAMS
++ * query vendor-specific element types
++ *
++ * accessing elements works by specifing type and unit of the element.
++ * for eample, storage elements are addressed with type = CHET_ST and
++ * unit = 0 .. cp_nslots-1
++ *
++ */
++struct changer_params {
++ int cp_curpicker; /* current transport element */
++ int cp_npickers; /* number of transport elements (CHET_MT) */
++ int cp_nslots; /* number of storage elements (CHET_ST) */
++ int cp_nportals; /* number of import/export elements (CHET_IE) */
++ int cp_ndrives; /* number of data transfer elements (CHET_DT) */
++};
++struct changer_vendor_params {
++ int cvp_n1; /* number of vendor specific elems (CHET_V1) */
++ char cvp_label1[16];
++ int cvp_n2; /* number of vendor specific elems (CHET_V2) */
++ char cvp_label2[16];
++ int cvp_n3; /* number of vendor specific elems (CHET_V3) */
++ char cvp_label3[16];
++ int cvp_n4; /* number of vendor specific elems (CHET_V4) */
++ char cvp_label4[16];
++ int reserved[8];
++};
++
++
++/*
++ * CHIOMOVE
++ * move a medium from one element to another
++ */
++struct changer_move {
++ int cm_fromtype; /* type/unit of source element */
++ int cm_fromunit;
++ int cm_totype; /* type/unit of destination element */
++ int cm_tounit;
++ int cm_flags;
++};
++#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */
++
++
++/*
++ * CHIOEXCHANGE
++ * move one medium from element #1 to element #2,
++ * and another one from element #2 to element #3.
++ * element #1 and #3 are allowed to be identical.
++ */
++struct changer_exchange {
++ int ce_srctype; /* type/unit of element #1 */
++ int ce_srcunit;
++ int ce_fdsttype; /* type/unit of element #2 */
++ int ce_fdstunit;
++ int ce_sdsttype; /* type/unit of element #3 */
++ int ce_sdstunit;
++ int ce_flags;
++};
++#define CE_INVERT1 1
++#define CE_INVERT2 2
++
++
++/*
++ * CHIOPOSITION
++ * move the transport element (robot arm) to a specific element.
++ */
++struct changer_position {
++ int cp_type;
++ int cp_unit;
++ int cp_flags;
++};
++#define CP_INVERT 1
++
++
++/*
++ * CHIOGSTATUS
++ * get element status for all elements of a specific type
++ */
++struct changer_element_status {
++ int ces_type;
++ unsigned char *ces_data;
++};
++#define CESTATUS_FULL 0x01 /* full */
++#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */
++#define CESTATUS_EXCEPT 0x04 /* error condition */
++#define CESTATUS_ACCESS 0x08 /* access allowed */
++#define CESTATUS_EXENAB 0x10 /* element can export media */
++#define CESTATUS_INENAB 0x20 /* element can import media */
++
++
++/*
++ * CHIOGELEM
++ * get more detailed status informtion for a single element
++ */
++struct changer_get_element {
++ int cge_type; /* type/unit */
++ int cge_unit;
++ int cge_status; /* status */
++ int cge_errno; /* errno */
++ int cge_srctype; /* source element of the last move/exchange */
++ int cge_srcunit;
++ int cge_id; /* scsi id (for data transfer elements) */
++ int cge_lun; /* scsi lun (for data transfer elements) */
++ char cge_pvoltag[36]; /* primary volume tag */
++ char cge_avoltag[36]; /* alternate volume tag */
++ int cge_flags;
++};
++/* flags */
++#define CGE_ERRNO 0x01 /* errno available */
++#define CGE_INVERT 0x02 /* media inverted */
++#define CGE_SRC 0x04 /* media src available */
++#define CGE_IDLUN 0x08 /* ID+LUN available */
++#define CGE_PVOLTAG 0x10 /* primary volume tag available */
++#define CGE_AVOLTAG 0x20 /* alternate volume tag available */
++
++
++/*
++ * CHIOSVOLTAG
++ * set volume tag
++ */
++struct changer_set_voltag {
++ int csv_type; /* type/unit */
++ int csv_unit;
++ char csv_voltag[36]; /* volume tag */
++ int csv_flags;
++};
++#define CSV_PVOLTAG 0x01 /* primary volume tag */
++#define CSV_AVOLTAG 0x02 /* alternate volume tag */
++#define CSV_CLEARTAG 0x04 /* clear volume tag */
++
++/* ioctls */
++#define CHIOMOVE _IOW('c', 1,struct changer_move)
++#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange)
++#define CHIOPOSITION _IOW('c', 3,struct changer_position)
++#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */
++#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */
++#define CHIOGPARAMS _IOR('c', 6,struct changer_params)
++#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status)
++#define CHIOGELEM _IOW('c',16,struct changer_get_element)
++#define CHIOINITELEM _IO('c',17)
++#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag)
++#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params)
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * Local variables:
++ * c-basic-offset: 8
++ * End:
++ */
+diff -puN include/linux/major.h~add-scsi-changer-driver include/linux/major.h
+--- 25/include/linux/major.h~add-scsi-changer-driver Thu Feb 17 16:55:13 2005
++++ 25-akpm/include/linux/major.h Thu Feb 17 16:55:14 2005
+@@ -101,6 +101,7 @@
+ #define I2O_MAJOR 80 /* 80->87 */
+
+ #define SHMIQ_MAJOR 85 /* Linux/mips, SGI /dev/shmiq */
++#define SCSI_CHANGER_MAJOR 86
+
+ #define IDE6_MAJOR 88
+ #define IDE7_MAJOR 89
+diff -puN include/scsi/scsi.h~add-scsi-changer-driver include/scsi/scsi.h
+--- 25/include/scsi/scsi.h~add-scsi-changer-driver Thu Feb 17 16:55:13 2005
++++ 25-akpm/include/scsi/scsi.h Thu Feb 17 16:55:14 2005
+@@ -41,6 +41,7 @@ extern const char *const scsi_device_typ
+ #define FORMAT_UNIT 0x04
+ #define READ_BLOCK_LIMITS 0x05
+ #define REASSIGN_BLOCKS 0x07
++#define INITIALIZE_ELEMENT_STATUS 0x07
+ #define READ_6 0x08
+ #define WRITE_6 0x0a
+ #define SEEK_6 0x0b
+@@ -65,6 +66,7 @@ extern const char *const scsi_device_typ
+ #define READ_10 0x28
+ #define WRITE_10 0x2a
+ #define SEEK_10 0x2b
++#define POSITION_TO_ELEMENT 0x2b
+ #define WRITE_VERIFY 0x2e
+ #define VERIFY 0x2f
+ #define SEARCH_HIGH 0x30
+@@ -97,6 +99,7 @@ extern const char *const scsi_device_typ
+ #define PERSISTENT_RESERVE_OUT 0x5f
+ #define REPORT_LUNS 0xa0
+ #define MOVE_MEDIUM 0xa5
++#define EXCHANGE_MEDIUM 0xa6
+ #define READ_12 0xa8
+ #define WRITE_12 0xaa
+ #define WRITE_VERIFY_12 0xae
+_
Deleted: trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-scsi_changer.dpatch
===================================================================
--- trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-scsi_changer.dpatch 2005-03-08 12:59:56 UTC (rev 2645)
+++ trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/drivers-scsi_changer.dpatch 2005-03-08 13:54:32 UTC (rev 2646)
@@ -1,1537 +0,0 @@
-#! /bin/sh -e
-## <PATCHNAME>.dpatch by <PATCH_AUTHOR@EMAI>
-##
-## All lines beginning with `## DP:' are a description of the patch.
-## DP: Description: SCSI Media Changer - http://bytesex.org/patches/
-## DP: Patch author: unknown
-## DP: Upstream status: not submitted
-
-. $(dirname $0)/DPATCH
-
-@DPATCH@
-diff -urN kernel-source-2.6.6/Documentation/scsi-changer.txt kernel-source-2.6.6-1/Documentation/scsi-changer.txt
---- kernel-source-2.6.6/Documentation/scsi-changer.txt 1970-01-01 10:00:00.000000000 +1000
-+++ kernel-source-2.6.6-1/Documentation/scsi-changer.txt 2004-03-17 21:24:11.000000000 +1100
-@@ -0,0 +1,184 @@
-+
-+README for the SCSI media changer driver
-+========================================
-+
-+This is a driver for SCSI Medium Changer devices, which are listed
-+with "Type: Medium Changer" in /proc/scsi/scsi.
-+
-+This is for *real* Jukeboxes. It is *not* supported to work with
-+common small CD-ROM changers, neither one-lun-per-slot SCSI changers
-+nor IDE drives.
-+
-+Userland tools available from: http://bytesex.org/changer.html
-+
-+
-+General Information
-+-------------------
-+
-+First some words about how changers work: A changer has 2 (possibly
-+more) SCSI ID's. One for the changer device which controls the robot,
-+and one for the device which actually reads and writes the data. The
-+later may be anything, a MOD, a CD-ROM, a tape or whatever. For the
-+changer device this is a "don't care", he *only* shuffles around the
-+media, nothing else.
-+
-+
-+The SCSI changer model is complex, compared to - for example - IDE-CD
-+changers. But it allows to handle nearly all possible cases. It knows
-+4 different types of changer elements:
-+
-+ media transport - this one shuffles around the media, i.e. the
-+ transport arm. Also known as "picker".
-+ storage - a slot which can hold a media.
-+ import/export - the same as above, but is accessable from outside,
-+ i.e. there the operator (you !) can use this to
-+ fill in and remove media from the changer.
-+ Sometimes named "mailslot".
-+ data transfer - this is the device which reads/writes, i.e. the
-+ CD-ROM / Tape / whatever drive.
-+
-+None of these is limited to one: A huge Jukebox could have slots for
-+123 CD-ROM's, 5 CD-ROM readers (and therefore 6 SCSI ID's: the changer
-+and each CD-ROM) and 2 transport arms. No problem to handle.
-+
-+
-+How it is implemented
-+---------------------
-+
-+I implemented the driver as character device driver with a NetBSD-like
-+ioctl interface. Just grabbed NetBSD's header file and one of the
-+other linux SCSI device drivers as starting point. The interface
-+should be source code compatible with NetBSD. So if there is any
-+software (anybody knows ???) which supports a BSDish changer driver,
-+it should work with this driver too.
-+
-+Over time a few more ioctls where added, volume tag support for example
-+wasn't covered by the NetBSD ioctl API.
-+
-+
-+Current State
-+-------------
-+
-+Support for more than one transport arm is not implemented yet (and
-+nobody asked for it so far...).
-+
-+I test and use the driver myself with a 35 slot cdrom jukebox from
-+Grundig. I got some reports telling it works ok with tape autoloaders
-+(Exabyte, HP and DEC). Some People use this driver with amanda. It
-+works fine with small (11 slots) and a huge (4 MOs, 88 slots)
-+magneto-optical Jukebox. Probably with lots of other changers too, most
-+(but not all :-) people mail me only if it does *not* work...
-+
-+I don't have any device lists, neither black-list nor white-list. Thus
-+it is quite useless to ask me whenever a specific device is supported or
-+not. In theory every changer device which supports the SCSI-2 media
-+changer command set should work out-of-the-box with this driver. If it
-+doesn't, it is a bug. Either within the driver or within the firmware
-+of the changer device.
-+
-+
-+Using it
-+--------
-+
-+This is a character device with major number is 86, so use
-+"mknod /dev/sch0 c 86 0" to create the special file for the driver.
-+
-+If the module finds the changer, it prints some messages about the
-+device [ try "dmesg" if you don't see anything ] and should show up in
-+/proc/devices. If not.... some changers use ID ? / LUN 0 for the
-+device and ID ? / LUN 1 for the robot mechanism. But Linux does *not*
-+look for LUN's other than 0 as default, becauce there are to many
-+broken devices. So you can try:
-+
-+ 1) echo "scsi add-single-device 0 0 ID 1" > /proc/scsi/scsi
-+ (replace ID with the SCSI-ID of the device)
-+ 2) boot the kernel with "max_scsi_luns=1" on the command line
-+ (append="max_scsi_luns=1" in lilo.conf should do the trick)
-+
-+
-+Trouble?
-+--------
-+
-+If you insmod the driver with "insmod debug=1", it will be verbose and
-+prints a lot of stuff to the syslog. Compiling the kernel with
-+CONFIG_SCSI_CONSTANTS=y improves the quality of the error messages alot
-+because the kernel will translate the error codes into human-readable
-+strings then.
-+
-+You can display these messages with the dmesg command (or check the
-+logfiles). If you email me some question becauce of a problem with the
-+driver, please include these messages.
-+
-+
-+Insmod options
-+--------------
-+
-+debug=0/1
-+ Enable debug messages (see above, default: 0).
-+
-+verbose=0/1
-+ Be verbose (default: 1).
-+
-+init=0/1
-+ Send INITIALIZE ELEMENT STATUS command to the changer
-+ at insmod time (default: 1).
-+
-+check_busy=0/1
-+ When moving media from/to data transfer elements, check
-+ whenever the device is busy and refuse to move if so
-+ (default: 1).
-+
-+timeout_init=<seconds>
-+ timeout for the INITIALIZE ELEMENT STATUS command
-+ (default: 3600).
-+
-+timeout_move=<seconds>
-+ timeout for all other commands (default: 120).
-+
-+dt_id=<id1>,<id2>,...
-+dt_lun=<lun1>,<lun2>,...
-+ These two allow to specify the SCSI ID and LUN for the data
-+ transfer elements. You likely don't need this as the jukebox
-+ should provide this information. But some devices don't ...
-+
-+vendor_firsts=
-+vendor_counts=
-+vendor_labels=
-+ These insmod options can be used to tell the driver that there
-+ are some vendor-specific element types. Grundig for example
-+ does this. Some jukeboxes have a printer to label fresh burned
-+ CDs, which is addressed as element 0xc000 (type 5). To tell the
-+ driver about this vendor-specific element, use this:
-+ $ insmod ch \
-+ vendor_firsts=0xc000 \
-+ vendor_counts=1 \
-+ vendor_labels=printer
-+ All three insmod options accept up to four comma-separated
-+ values, this way you can configure the element types 5-8.
-+ You likely need the SCSI specs for the device in question to
-+ find the correct values as they are not covered by the SCSI-2
-+ standard.
-+
-+
-+Credits
-+-------
-+
-+I wrote this driver using the famous mailing-patches-around-the-world
-+method. With (more or less) help from:
-+
-+ Daniel Moehwald <moehwald@hdg.de>
-+ Dane Jasper <dane@sonic.net>
-+ R. Scott Bailey <sbailey@dsddi.eds.com>
-+ Jonathan Corbet <corbet@atd.ucar.edu>
-+
-+Special thanks go to
-+ Martin Kuehne <Martin.KUEHNE@GRUNDIG.com>
-+for a old, second-hand (but full functional) cdrom jukebox which I use
-+to develop/test driver and tools now.
-+
-+Have fun,
-+
-+ Gerd
-+
-+--
-+Gerd Knorr <kraxel@bytesex.org>
-diff -urN kernel-source-2.6.6/drivers/scsi/Kconfig kernel-source-2.6.6-1/drivers/scsi/Kconfig
---- kernel-source-2.6.6/drivers/scsi/Kconfig 2004-05-10 19:47:58.000000000 +1000
-+++ kernel-source-2.6.6-1/drivers/scsi/Kconfig 2004-05-10 22:21:38.000000000 +1000
-@@ -137,6 +137,24 @@
-
- If unsure, say N.
-
-+config CHR_DEV_SCH
-+ tristate "SCSI media changer support"
-+ depends on SCSI
-+ ---help---
-+ This is a driver for SCSI media changers. Most common devices are
-+ tape libraries and MOD/CDROM jukeboxes. *Real* jukeboxes, you
-+ don't need this for those tiny 6-slot cdrom changers. Media
-+ changers are listed as "Type: Medium Changer" in /proc/scsi/scsi.
-+ If you have such hardware and want to use it with linux, say Y
-+ here. Check <file:Documentation/scsi-changer.txt> for details.
-+
-+ If you want to compile this as a module ( = code which can be
-+ inserted in and removed from the running kernel whenever you want),
-+ say M here and read <file:Documentation/modules.txt> and
-+ <file:Documentation/scsi.txt>. The module will be called ch.o.
-+ If unsure, say N.
-+
-+
- comment "Some SCSI devices (e.g. CD jukebox) support multiple LUNs"
- depends on SCSI
-
-diff -urN kernel-source-2.6.6/drivers/scsi/Makefile kernel-source-2.6.6-1/drivers/scsi/Makefile
---- kernel-source-2.6.6/drivers/scsi/Makefile 2004-05-10 19:47:58.000000000 +1000
-+++ kernel-source-2.6.6-1/drivers/scsi/Makefile 2004-05-10 22:21:38.000000000 +1000
-@@ -132,6 +131,7 @@
- obj-$(CONFIG_BLK_DEV_SD) += sd_mod.o
- obj-$(CONFIG_BLK_DEV_SR) += sr_mod.o
- obj-$(CONFIG_CHR_DEV_SG) += sg.o
-+obj-$(CONFIG_CHR_DEV_SCH) += ch.o
-
- scsi_mod-y += scsi.o hosts.o scsi_ioctl.o constants.o \
- scsicam.o scsi_error.o scsi_lib.o \
-diff -urN kernel-source-2.6.6/drivers/scsi/ch.c kernel-source-2.6.6-1/drivers/scsi/ch.c
---- kernel-source-2.6.6/drivers/scsi/ch.c 1970-01-01 10:00:00.000000000 +1000
-+++ kernel-source-2.6.6-1/drivers/scsi/ch.c 2004-03-17 21:24:11.000000000 +1100
-@@ -0,0 +1,1085 @@
-+/*
-+ * SCSI Media Changer device driver for Linux 2.6
-+ *
-+ * (c) 1996-2003 Gerd Knorr <kraxel@bytesex.org>
-+ *
-+ */
-+
-+#define VERSION "0.22"
-+
-+#include <linux/config.h>
-+#include <linux/version.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/fs.h>
-+#include <linux/kernel.h>
-+#include <linux/sched.h>
-+#include <linux/mm.h>
-+#include <linux/major.h>
-+#include <linux/string.h>
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/blkdev.h>
-+#include <linux/completion.h>
-+#include <linux/devfs_fs_kernel.h>
-+#include <linux/ioctl32.h>
-+#include <linux/compat.h>
-+#include <asm/system.h>
-+#include <asm/uaccess.h>
-+
-+#include <linux/chio.h> /* here are all the ioctls */
-+
-+#define MAJOR_NR SCSI_CHANGER_MAJOR
-+
-+#define CH_DT_MAX 16
-+#define CH_TYPES 8
-+
-+#include <scsi/scsi_cmnd.h>
-+#include <scsi/scsi_driver.h>
-+#include <scsi/scsi_ioctl.h>
-+
-+#include "scsi.h"
-+#include "hosts.h"
-+
-+MODULE_SUPPORTED_DEVICE("sch");
-+MODULE_DESCRIPTION("device driver for scsi media changer devices");
-+MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org>");
-+MODULE_LICENSE("GPL");
-+
-+static int check_busy = 1;
-+MODULE_PARM(check_busy,"i");
-+MODULE_PARM_DESC(check_busy, \
-+ "enable/disable busy check for data transfer elements (default: on)");
-+
-+static int init = 1;
-+MODULE_PARM(init,"i");
-+MODULE_PARM_DESC(init, \
-+ "initialize element status on driver load (default: on)");
-+
-+static int timeout_move = 300;
-+MODULE_PARM(timeout_move,"i");
-+MODULE_PARM_DESC(timeout_move,"timeout for move commands "
-+ "(default: 300 seconds)");
-+
-+static int timeout_init = 3600;
-+MODULE_PARM(timeout_init,"i");
-+MODULE_PARM_DESC(timeout_init,"timeout for INITIALIZE ELEMENT STATUS "
-+ "(default: 3600 seconds)");
-+
-+static int verbose = 1;
-+MODULE_PARM(verbose,"i");
-+MODULE_PARM_DESC(verbose,"be verbose (default: on)");
-+
-+static int debug = 0;
-+MODULE_PARM(debug,"i");
-+MODULE_PARM_DESC(debug,"enable/disable debug messages, also prints more "
-+ "detailed sense codes on scsi errors (default: off)");
-+
-+static int dt_id[CH_DT_MAX] = { [ 0 ... (CH_DT_MAX-1) ] = -1 };
-+static int dt_lun[CH_DT_MAX];
-+MODULE_PARM(dt_id,"1-" __MODULE_STRING(CH_DT_MAX) "i");
-+MODULE_PARM(dt_lun,"1-" __MODULE_STRING(CH_DT_MAX) "i");
-+
-+/* tell the driver about vendor-specific slots */
-+static int vendor_firsts[CH_TYPES-4];
-+static int vendor_counts[CH_TYPES-4];
-+static char *vendor_labels[CH_TYPES-4];
-+MODULE_PARM(vendor_firsts,"1-4i");
-+MODULE_PARM(vendor_counts,"1-4i");
-+MODULE_PARM(vendor_labels,"1-4s");
-+
-+#define dprintk(fmt, arg...) if (debug) \
-+ printk(KERN_DEBUG "%s: " fmt, ch->name, ##arg)
-+#define vprintk(fmt, arg...) if (verbose) \
-+ printk(KERN_INFO "%s: " fmt, ch->name, ##arg)
-+
-+/* ------------------------------------------------------------------- */
-+
-+#define MAX_RETRIES 1
-+
-+static int ch_probe(struct device *);
-+static int ch_remove(struct device *);
-+static int ch_open(struct inode * inode, struct file * filp);
-+static int ch_release(struct inode * inode, struct file * filp);
-+static int ch_ioctl(struct inode * inode, struct file * filp,
-+ unsigned int cmd, unsigned long arg);
-+
-+typedef struct {
-+ struct list_head list;
-+ int minor;
-+ char name[8];
-+ Scsi_Device *device;
-+ Scsi_Device **dt; /* ptrs to data transfer elements */
-+ u_int firsts[CH_TYPES];
-+ u_int counts[CH_TYPES];
-+ u_int unit_attention;
-+ u_int voltags;
-+ struct semaphore lock;
-+} scsi_changer;
-+
-+static LIST_HEAD(ch_devlist);
-+static spinlock_t ch_devlist_lock = SPIN_LOCK_UNLOCKED;
-+static int ch_devcount;
-+
-+struct scsi_driver ch_template =
-+{
-+ .owner = THIS_MODULE,
-+ .gendrv = {
-+ .name = "ch",
-+ .probe = ch_probe,
-+ .remove = ch_remove,
-+ },
-+};
-+
-+static struct file_operations changer_fops =
-+{
-+ .owner = THIS_MODULE,
-+ .open = ch_open,
-+ .release = ch_release,
-+ .ioctl = ch_ioctl,
-+};
-+
-+static struct {
-+ unsigned char sense;
-+ unsigned char asc;
-+ unsigned char ascq;
-+ int errno;
-+} err[] = {
-+/* Just filled in what looks right. Hav'nt checked any standard paper for
-+ these errno assignments, so they may be wrong... */
-+ {
-+ .sense = ILLEGAL_REQUEST,
-+ .asc = 0x21,
-+ .ascq = 0x01,
-+ .errno = EBADSLT, /* Invalid element address */
-+ },{
-+ .sense = ILLEGAL_REQUEST,
-+ .asc = 0x28,
-+ .ascq = 0x01,
-+ .errno = EBADE, /* Import or export element accessed */
-+ },{
-+ .sense = ILLEGAL_REQUEST,
-+ .asc = 0x3B,
-+ .ascq = 0x0D,
-+ .errno = EXFULL, /* Medium destination element full */
-+ },{
-+ .sense = ILLEGAL_REQUEST,
-+ .asc = 0x3B,
-+ .ascq = 0x0E,
-+ .errno = EBADE, /* Medium source element empty */
-+ },{
-+ .sense = ILLEGAL_REQUEST,
-+ .asc = 0x20,
-+ .ascq = 0x00,
-+ .errno = EBADRQC, /* Invalid command operation code */
-+ },{
-+ /* end of list */
-+ }
-+};
-+
-+/* ------------------------------------------------------------------- */
-+/* ioctl32 compat */
-+
-+#ifdef CONFIG_COMPAT
-+
-+struct changer_element_status32 {
-+ int ces_type;
-+ compat_uptr_t ces_data;
-+};
-+#define CHIOGSTATUS32 _IOW('c', 8,struct changer_element_status32)
-+
-+static struct {
-+ unsigned int cmd;
-+ int reg;
-+} ioctl32_cmds[] = {
-+ { .cmd = CHIOMOVE },
-+ { .cmd = CHIOEXCHANGE },
-+ { .cmd = CHIOPOSITION },
-+ { .cmd = CHIOGPICKER },
-+ { .cmd = CHIOSPICKER },
-+ { .cmd = CHIOGPARAMS },
-+ { .cmd = CHIOGELEM },
-+ { .cmd = CHIOINITELEM },
-+ { .cmd = CHIOSVOLTAG },
-+ { .cmd = CHIOGVPARAMS },
-+ { .cmd = CHIOGSTATUS32 },
-+};
-+
-+static int ioctl32_register(void)
-+{
-+ unsigned int i;
-+ int err;
-+
-+ for (i = 0; i < ARRAY_SIZE(ioctl32_cmds); i++) {
-+ err = register_ioctl32_conversion(ioctl32_cmds[i].cmd,NULL);
-+ if (err >= 0)
-+ ioctl32_cmds[i].reg++;
-+ }
-+ return 0;
-+}
-+static int ioctl32_unregister(void)
-+{
-+ unsigned int i;
-+
-+ for (i = 0; i < ARRAY_SIZE(ioctl32_cmds); i++) {
-+ if (ioctl32_cmds[i].reg) {
-+ unregister_ioctl32_conversion(ioctl32_cmds[i].cmd);
-+ ioctl32_cmds[i].reg--;
-+ }
-+ }
-+ return 0;
-+}
-+
-+#else
-+
-+static int ioctl32_register(void) { return 0; }
-+static int ioctl32_unregister(void) { return 0; }
-+
-+#endif
-+
-+/* ------------------------------------------------------------------- */
-+
-+static int ch_find_errno(unsigned char *sense_buffer)
-+{
-+ int i,errno = 0;
-+
-+ /* Check to see if additional sense information is available */
-+ if (sense_buffer[7] > 5 &&
-+ sense_buffer[12] != 0) {
-+ for (i = 0; err[i].errno != 0; i++) {
-+ if (err[i].sense == sense_buffer[ 2] &&
-+ err[i].asc == sense_buffer[12] &&
-+ err[i].ascq == sense_buffer[13]) {
-+ errno = -err[i].errno;
-+ break;
-+ }
-+ }
-+ }
-+ if (errno == 0)
-+ errno = -EIO;
-+ return errno;
-+}
-+
-+static void
-+ch_request_done (Scsi_Cmnd * sc)
-+{
-+ sc->request->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */
-+ if (sc->request->waiting != NULL)
-+ complete(sc->request->waiting);
-+}
-+
-+static int
-+ch_do_scsi(scsi_changer *ch, unsigned char *cmd,
-+ void *buffer, unsigned buflength)
-+{
-+ int errno, retries = 0, timeout;
-+ DECLARE_COMPLETION(wait);
-+ Scsi_Request *sr;
-+
-+ sr = scsi_allocate_request(ch->device, GFP_ATOMIC);
-+ if (NULL == sr)
-+ return -ENOMEM;
-+
-+ retry:
-+ errno = 0;
-+ if (debug) {
-+ dprintk("command: %s","");
-+ print_command(cmd);
-+ }
-+
-+ sr->sr_request->waiting = &wait;
-+ timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
-+ ? timeout_init : timeout_move;
-+ scsi_do_req(sr, cmd, buffer, buflength, ch_request_done,
-+ timeout * HZ, MAX_RETRIES);
-+ wait_for_completion(&wait);
-+ sr->sr_request->waiting = NULL;
-+
-+ dprintk("result: 0x%x\n",sr->sr_result);
-+ if (driver_byte(sr->sr_result) != 0) {
-+ if (debug)
-+ print_req_sense(ch->name, sr);
-+ errno = ch_find_errno(sr->sr_sense_buffer);
-+
-+ switch(sr->sr_sense_buffer[2] & 0xf) {
-+ case UNIT_ATTENTION:
-+ ch->unit_attention = 1;
-+ if (retries++ < 3)
-+ goto retry;
-+ break;
-+ }
-+ }
-+ scsi_release_request(sr);
-+ return errno;
-+}
-+
-+/* ------------------------------------------------------------------------ */
-+
-+static int
-+ch_elem_to_typecode(scsi_changer *ch, u_int elem)
-+{
-+ int i;
-+
-+ for (i = 0; i < CH_TYPES; i++) {
-+ if (elem >= ch->firsts[i] &&
-+ elem < ch->firsts[i] +
-+ ch->counts[i])
-+ return i+1;
-+ }
-+ return 0;
-+}
-+
-+static int
-+ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
-+{
-+ u_char cmd[12];
-+ u_char *buffer;
-+ int result;
-+
-+ buffer = kmalloc(512, GFP_KERNEL);
-+ if(!buffer)
-+ return -ENOMEM;
-+
-+ retry:
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = READ_ELEMENT_STATUS;
-+ cmd[1] = (ch->device->lun << 5) |
-+ (ch->voltags ? 0x10 : 0) |
-+ ch_elem_to_typecode(ch,elem);
-+ cmd[2] = (elem >> 8) & 0xff;
-+ cmd[3] = elem & 0xff;
-+ cmd[5] = 1;
-+ cmd[9] = 255;
-+ if (0 == (result = ch_do_scsi(ch, cmd, buffer, 256))) {
-+ if (((buffer[16] << 8) | buffer[17]) != elem) {
-+ dprintk("asked for element 0x%02x, got 0x%02x\n",
-+ elem,(buffer[16] << 8) | buffer[17]);
-+ kfree(buffer);
-+ return -EIO;
-+ }
-+ memcpy(data,buffer+16,16);
-+ } else {
-+ if (ch->voltags) {
-+ ch->voltags = 0;
-+ vprintk("device has no volume tag support%s\n","");
-+ goto retry;
-+ }
-+ dprintk("READ ELEMENT STATUS for element 0x%x failed\n",elem);
-+ }
-+ kfree(buffer);
-+ return result;
-+}
-+
-+static int
-+ch_init_elem(scsi_changer *ch)
-+{
-+ int err;
-+ u_char cmd[6];
-+
-+ vprintk("INITIALIZE ELEMENT STATUS, may take some time ...%s\n","");
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = INITIALIZE_ELEMENT_STATUS;
-+ cmd[1] = ch->device->lun << 5;
-+ err = ch_do_scsi(ch, cmd, NULL, 0);
-+ vprintk("... finished%s\n","");
-+ return err;
-+}
-+
-+static int
-+ch_readconfig(scsi_changer *ch)
-+{
-+ u_char cmd[10], data[16];
-+ u_char *buffer;
-+ int result,id,lun,i;
-+ u_int elem;
-+
-+ buffer = kmalloc(512, GFP_KERNEL);
-+ if (!buffer)
-+ return -ENOMEM;
-+ memset(buffer,0,512);
-+
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = MODE_SENSE;
-+ cmd[1] = ch->device->lun << 5;
-+ cmd[2] = 0x1d;
-+ cmd[4] = 255;
-+ result = ch_do_scsi(ch, cmd, buffer, 255);
-+ if (0 != result) {
-+ cmd[1] |= (1<<3);
-+ result = ch_do_scsi(ch, cmd, buffer, 255);
-+ }
-+ if (0 == result) {
-+ ch->firsts[CHET_MT] =
-+ (buffer[buffer[3]+ 6] << 8) | buffer[buffer[3]+ 7];
-+ ch->counts[CHET_MT] =
-+ (buffer[buffer[3]+ 8] << 8) | buffer[buffer[3]+ 9];
-+ ch->firsts[CHET_ST] =
-+ (buffer[buffer[3]+10] << 8) | buffer[buffer[3]+11];
-+ ch->counts[CHET_ST] =
-+ (buffer[buffer[3]+12] << 8) | buffer[buffer[3]+13];
-+ ch->firsts[CHET_IE] =
-+ (buffer[buffer[3]+14] << 8) | buffer[buffer[3]+15];
-+ ch->counts[CHET_IE] =
-+ (buffer[buffer[3]+16] << 8) | buffer[buffer[3]+17];
-+ ch->firsts[CHET_DT] =
-+ (buffer[buffer[3]+18] << 8) | buffer[buffer[3]+19];
-+ ch->counts[CHET_DT] =
-+ (buffer[buffer[3]+20] << 8) | buffer[buffer[3]+21];
-+ vprintk("type #1 (mt): 0x%x+%d [medium transport]\n",
-+ ch->firsts[CHET_MT],
-+ ch->counts[CHET_MT]);
-+ vprintk("type #2 (st): 0x%x+%d [storage]\n",
-+ ch->firsts[CHET_ST],
-+ ch->counts[CHET_ST]);
-+ vprintk("type #3 (ie): 0x%x+%d [import/export]\n",
-+ ch->firsts[CHET_IE],
-+ ch->counts[CHET_IE]);
-+ vprintk("type #4 (dt): 0x%x+%d [data transfer]\n",
-+ ch->firsts[CHET_DT],
-+ ch->counts[CHET_DT]);
-+ } else {
-+ vprintk("reading element address assigment page failed!%s\n",
-+ "");
-+ }
-+
-+ /* vendor specific element types */
-+ for (i = 0; i < 4; i++) {
-+ if (0 == vendor_counts[i])
-+ continue;
-+ if (NULL == vendor_labels[i])
-+ continue;
-+ ch->firsts[CHET_V1+i] = vendor_firsts[i];
-+ ch->counts[CHET_V1+i] = vendor_counts[i];
-+ vprintk("type #%d (v%d): 0x%x+%d [%s, vendor specific]\n",
-+ i+5,i+1,vendor_firsts[i],vendor_counts[i],
-+ vendor_labels[i]);
-+ }
-+
-+ /* look up the devices of the data transfer elements */
-+ ch->dt =
-+ kmalloc(ch->counts[CHET_DT]*sizeof(Scsi_Device*),
-+ GFP_ATOMIC);
-+ for (elem = 0; elem < ch->counts[CHET_DT]; elem++) {
-+ id = -1;
-+ lun = 0;
-+ if (-1 != dt_id[elem]) {
-+ id = dt_id[elem];
-+ lun = dt_lun[elem];
-+ vprintk("dt 0x%x: [insmod option] ",
-+ elem+ch->firsts[CHET_DT]);
-+ } else if (0 != ch_read_element_status
-+ (ch,elem+ch->firsts[CHET_DT],data)) {
-+ vprintk("dt 0x%x: READ ELEMENT STATUS failed\n",
-+ elem+ch->firsts[CHET_DT]);
-+ } else {
-+ vprintk("dt 0x%x: ",elem+ch->firsts[CHET_DT]);
-+ if (data[6] & 0x80) {
-+ if (verbose)
-+ printk("not this SCSI bus\n");
-+ ch->dt[elem] = NULL;
-+ } else if (0 == (data[6] & 0x30)) {
-+ if (verbose)
-+ printk("ID/LUN unknown\n");
-+ ch->dt[elem] = NULL;
-+ } else {
-+ id = ch->device->id;
-+ lun = 0;
-+ if (data[6] & 0x20) id = data[7];
-+ if (data[6] & 0x10) lun = data[6] & 7;
-+ }
-+ }
-+ if (-1 != id) {
-+ if (verbose)
-+ printk("ID %i, LUN %i, ",id,lun);
-+ ch->dt[elem] =
-+ scsi_device_lookup(ch->device->host,
-+ ch->device->channel,
-+ id,lun);
-+ if (!ch->dt[elem]) {
-+ /* should not happen */
-+ if (verbose)
-+ printk("Huh? device not found!\n");
-+ } else {
-+ if (verbose)
-+ printk("name: %8.8s %16.16s %4.4s\n",
-+ ch->dt[elem]->vendor,
-+ ch->dt[elem]->model,
-+ ch->dt[elem]->rev);
-+ }
-+ }
-+ }
-+ ch->voltags = 1;
-+ kfree(buffer);
-+
-+ return 0;
-+}
-+
-+/* ------------------------------------------------------------------------ */
-+
-+static int
-+ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate)
-+{
-+ u_char cmd[10];
-+
-+ dprintk("position: 0x%x\n",elem);
-+ if (0 == trans)
-+ trans = ch->firsts[CHET_MT];
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = POSITION_TO_ELEMENT;
-+ cmd[1] = ch->device->lun << 5;
-+ cmd[2] = (trans >> 8) & 0xff;
-+ cmd[3] = trans & 0xff;
-+ cmd[4] = (elem >> 8) & 0xff;
-+ cmd[5] = elem & 0xff;
-+ cmd[8] = rotate ? 1 : 0;
-+ return ch_do_scsi(ch, cmd, NULL,0);
-+}
-+
-+static int
-+ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate)
-+{
-+ u_char cmd[12];
-+
-+ dprintk("move: 0x%x => 0x%x\n",src,dest);
-+ if (0 == trans)
-+ trans = ch->firsts[CHET_MT];
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = MOVE_MEDIUM;
-+ cmd[1] = ch->device->lun << 5;
-+ cmd[2] = (trans >> 8) & 0xff;
-+ cmd[3] = trans & 0xff;
-+ cmd[4] = (src >> 8) & 0xff;
-+ cmd[5] = src & 0xff;
-+ cmd[6] = (dest >> 8) & 0xff;
-+ cmd[7] = dest & 0xff;
-+ cmd[10] = rotate ? 1 : 0;
-+ return ch_do_scsi(ch, cmd, NULL,0);
-+}
-+
-+static int
-+ch_exchange(scsi_changer *ch, u_int trans, u_int src,
-+ u_int dest1, u_int dest2, int rotate1, int rotate2)
-+{
-+ u_char cmd[12];
-+
-+ dprintk("exchange: 0x%x => 0x%x => 0x%x\n",
-+ src,dest1,dest2);
-+ if (0 == trans)
-+ trans = ch->firsts[CHET_MT];
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = EXCHANGE_MEDIUM;
-+ cmd[1] = ch->device->lun << 5;
-+ cmd[2] = (trans >> 8) & 0xff;
-+ cmd[3] = trans & 0xff;
-+ cmd[4] = (src >> 8) & 0xff;
-+ cmd[5] = src & 0xff;
-+ cmd[6] = (dest1 >> 8) & 0xff;
-+ cmd[7] = dest1 & 0xff;
-+ cmd[8] = (dest2 >> 8) & 0xff;
-+ cmd[9] = dest2 & 0xff;
-+ cmd[10] = (rotate1 ? 1 : 0) | (rotate2 ? 2 : 0);
-+
-+ return ch_do_scsi(ch, cmd, NULL,0);
-+}
-+
-+static void
-+ch_check_voltag(char *tag)
-+{
-+ int i;
-+
-+ for (i = 0; i < 32; i++) {
-+ /* restrict to ascii */
-+ if (tag[i] >= 0x7f || tag[i] < 0x20)
-+ tag[i] = ' ';
-+ /* don't allow search wildcards */
-+ if (tag[i] == '?' ||
-+ tag[i] == '*')
-+ tag[i] = ' ';
-+ }
-+}
-+
-+static int
-+ch_set_voltag(scsi_changer *ch, u_int elem,
-+ int alternate, int clear, u_char *tag)
-+{
-+ u_char cmd[12];
-+ u_char *buffer;
-+ int result;
-+
-+ buffer = kmalloc(512, GFP_KERNEL);
-+ if (!buffer)
-+ return -ENOMEM;
-+ memset(buffer,0,512);
-+
-+ dprintk("%s %s voltag: 0x%x => \"%s\"\n",
-+ clear ? "clear" : "set",
-+ alternate ? "alternate" : "primary",
-+ elem, tag);
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = SEND_VOLUME_TAG;
-+ cmd[1] = (ch->device->lun << 5) |
-+ ch_elem_to_typecode(ch,elem);
-+ cmd[2] = (elem >> 8) & 0xff;
-+ cmd[3] = elem & 0xff;
-+ cmd[5] = clear
-+ ? (alternate ? 0x0d : 0x0c)
-+ : (alternate ? 0x0b : 0x0a);
-+
-+ cmd[9] = 255;
-+
-+ memcpy(buffer,tag,32);
-+ ch_check_voltag(buffer);
-+
-+ result = ch_do_scsi(ch, cmd, buffer, 256);
-+ kfree(buffer);
-+ return result;
-+}
-+
-+static int ch_gstatus(scsi_changer *ch, int type, unsigned char *dest)
-+{
-+ int retval = 0;
-+ u_char data[16];
-+ unsigned int i;
-+
-+ down(&ch->lock);
-+ for (i = 0; i < ch->counts[type]; i++) {
-+ if (0 != ch_read_element_status
-+ (ch, ch->firsts[type]+i,data)) {
-+ retval = -EIO;
-+ break;
-+ }
-+ put_user(data[2], dest+i);
-+ if (data[2] & CESTATUS_EXCEPT)
-+ vprintk("element 0x%x: asc=0x%x, ascq=0x%x\n",
-+ ch->firsts[type]+i,
-+ (int)data[4],(int)data[5]);
-+ retval = ch_read_element_status
-+ (ch, ch->firsts[type]+i,data);
-+ if (0 != retval)
-+ break;
-+ }
-+ up(&ch->lock);
-+ return retval;
-+}
-+
-+/* ------------------------------------------------------------------------ */
-+
-+static int
-+ch_release(struct inode *inode, struct file *file)
-+{
-+ scsi_changer *ch = file->private_data;
-+
-+ scsi_device_put(ch->device);
-+ file->private_data = NULL;
-+ return 0;
-+}
-+
-+static int
-+ch_open(struct inode *inode, struct file *file)
-+{
-+ struct list_head *item;
-+ scsi_changer *tmp, *ch;
-+ int minor = iminor(inode);
-+
-+ spin_lock(&ch_devlist_lock);
-+ ch = NULL;
-+ list_for_each(item,&ch_devlist) {
-+ tmp = list_entry(item, scsi_changer, list);
-+ if (tmp->minor == minor)
-+ ch = tmp;
-+ }
-+ if (NULL == ch || scsi_device_get(ch->device)) {
-+ spin_unlock(&ch_devlist_lock);
-+ return -ENXIO;
-+ }
-+ spin_unlock(&ch_devlist_lock);
-+
-+ file->private_data = ch;
-+ return 0;
-+}
-+
-+static int
-+ch_checkrange(scsi_changer *ch, unsigned int type, unsigned int unit)
-+{
-+ if (type >= CH_TYPES || unit >= ch->counts[type])
-+ return -1;
-+ return 0;
-+}
-+
-+/* for data transfer elements: check if they are busy */
-+static int
-+ch_is_busy(scsi_changer *ch, int type, int unit)
-+{
-+#if 0 /* hmm, access_count is gone :-/ */
-+ if (!check_busy)
-+ return 0;
-+ if (type != CHET_DT)
-+ return 0;
-+ if (!ch->dt[unit])
-+ return 0;
-+ return atomic_read(&ch->dt[unit]->access_count);
-+#else
-+ return 0;
-+#endif
-+}
-+
-+static int ch_ioctl(struct inode * inode, struct file * file,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ scsi_changer *ch = file->private_data;
-+ int retval;
-+
-+ switch (cmd) {
-+ case CHIOGPARAMS:
-+ {
-+ struct changer_params params;
-+
-+ params.cp_curpicker = 0;
-+ params.cp_npickers = ch->counts[CHET_MT];
-+ params.cp_nslots = ch->counts[CHET_ST];
-+ params.cp_nportals = ch->counts[CHET_IE];
-+ params.cp_ndrives = ch->counts[CHET_DT];
-+
-+ if (copy_to_user((void *) arg, ¶ms, sizeof(params)))
-+ return -EFAULT;
-+ return 0;
-+ }
-+ case CHIOGVPARAMS:
-+ {
-+ struct changer_vendor_params vparams;
-+
-+ memset(&vparams,0,sizeof(vparams));
-+ if (ch->counts[CHET_V1]) {
-+ vparams.cvp_n1 = ch->counts[CHET_V1];
-+ strncpy(vparams.cvp_label1,vendor_labels[0],16);
-+ }
-+ if (ch->counts[CHET_V2]) {
-+ vparams.cvp_n2 = ch->counts[CHET_V2];
-+ strncpy(vparams.cvp_label2,vendor_labels[1],16);
-+ }
-+ if (ch->counts[CHET_V3]) {
-+ vparams.cvp_n3 = ch->counts[CHET_V3];
-+ strncpy(vparams.cvp_label3,vendor_labels[2],16);
-+ }
-+ if (ch->counts[CHET_V4]) {
-+ vparams.cvp_n4 = ch->counts[CHET_V4];
-+ strncpy(vparams.cvp_label4,vendor_labels[3],16);
-+ }
-+ if (copy_to_user((void *) arg, &vparams, sizeof(vparams)))
-+ return -EFAULT;
-+ return 0;
-+ }
-+
-+ case CHIOPOSITION:
-+ {
-+ struct changer_position pos;
-+
-+ if (copy_from_user(&pos, (void*)arg, sizeof (pos)))
-+ return -EFAULT;
-+
-+ if (0 != ch_checkrange(ch, pos.cp_type, pos.cp_unit)) {
-+ dprintk("CHIOPOSITION: invalid parameter%s\n","");
-+ return -EBADSLT;
-+ }
-+ down(&ch->lock);
-+ retval = ch_position(ch,0,
-+ ch->firsts[pos.cp_type] + pos.cp_unit,
-+ pos.cp_flags & CP_INVERT);
-+ up(&ch->lock);
-+ return retval;
-+ }
-+
-+ case CHIOMOVE:
-+ {
-+ struct changer_move mv;
-+
-+ if (copy_from_user(&mv, (void*)arg, sizeof (mv)))
-+ return -EFAULT;
-+
-+ if (0 != ch_checkrange(ch, mv.cm_fromtype, mv.cm_fromunit) ||
-+ 0 != ch_checkrange(ch, mv.cm_totype, mv.cm_tounit )) {
-+ dprintk("CHIOMOVE: invalid parameter%s\n","");
-+ return -EBADSLT;
-+ }
-+ if (ch_is_busy(ch, mv.cm_fromtype, mv.cm_fromunit) ||
-+ ch_is_busy(ch, mv.cm_totype, mv.cm_tounit ))
-+ return -EBUSY;
-+
-+ down(&ch->lock);
-+ retval = ch_move(ch,0,
-+ ch->firsts[mv.cm_fromtype] + mv.cm_fromunit,
-+ ch->firsts[mv.cm_totype] + mv.cm_tounit,
-+ mv.cm_flags & CM_INVERT);
-+ up(&ch->lock);
-+ return retval;
-+ }
-+
-+ case CHIOEXCHANGE:
-+ {
-+ struct changer_exchange mv;
-+
-+ if (copy_from_user(&mv, (void*)arg, sizeof (mv)))
-+ return -EFAULT;
-+
-+ if (0 != ch_checkrange(ch, mv.ce_srctype, mv.ce_srcunit ) ||
-+ 0 != ch_checkrange(ch, mv.ce_fdsttype, mv.ce_fdstunit) ||
-+ 0 != ch_checkrange(ch, mv.ce_sdsttype, mv.ce_sdstunit)) {
-+ dprintk("CHIOEXCHANGE: invalid parameter%s\n","");
-+ return -EBADSLT;
-+ }
-+ if (0 != ch_is_busy(ch, mv.ce_srctype, mv.ce_srcunit ) ||
-+ 0 != ch_is_busy(ch, mv.ce_fdsttype, mv.ce_fdstunit) ||
-+ 0 != ch_is_busy(ch, mv.ce_sdsttype, mv.ce_sdstunit))
-+ return -EBUSY;
-+
-+ down(&ch->lock);
-+ retval = ch_exchange
-+ (ch,0,
-+ ch->firsts[mv.ce_srctype] + mv.ce_srcunit,
-+ ch->firsts[mv.ce_fdsttype] + mv.ce_fdstunit,
-+ ch->firsts[mv.ce_sdsttype] + mv.ce_sdstunit,
-+ mv.ce_flags & CE_INVERT1, mv.ce_flags & CE_INVERT2);
-+ up(&ch->lock);
-+ return retval;
-+ }
-+
-+ case CHIOGSTATUS:
-+ {
-+ struct changer_element_status ces;
-+
-+ if (copy_from_user(&ces, (void*)arg, sizeof (ces)))
-+ return -EFAULT;
-+ if (ces.ces_type < 0 || ces.ces_type >= CH_TYPES)
-+ return -EINVAL;
-+
-+ return ch_gstatus(ch, ces.ces_type, ces.ces_data);
-+ }
-+
-+#ifdef CONFIG_COMPAT
-+ case CHIOGSTATUS32:
-+ {
-+ struct changer_element_status32 ces32;
-+ unsigned char *data;
-+
-+ if (copy_from_user(&ces32, (void*)arg, sizeof (ces32)))
-+ return -EFAULT;
-+ if (ces32.ces_type < 0 || ces32.ces_type >= CH_TYPES)
-+ return -EINVAL;
-+
-+ data = compat_ptr(ces32.ces_data);
-+ return ch_gstatus(ch, ces32.ces_type, data);
-+ }
-+#endif
-+
-+ case CHIOGELEM:
-+ {
-+ struct changer_get_element cge;
-+ u_char cmd[12];
-+ u_char *buffer;
-+ unsigned int elem;
-+ int result,i;
-+
-+ if (copy_from_user(&cge, (void*)arg, sizeof (cge)))
-+ return -EFAULT;
-+
-+ if (0 != ch_checkrange(ch, cge.cge_type, cge.cge_unit))
-+ return -EINVAL;
-+ elem = ch->firsts[cge.cge_type] + cge.cge_unit;
-+
-+ buffer = kmalloc(512, GFP_KERNEL);
-+ if (!buffer)
-+ return -ENOMEM;
-+ down(&ch->lock);
-+
-+ voltag_retry:
-+ memset(cmd,0,sizeof(cmd));
-+ cmd[0] = READ_ELEMENT_STATUS;
-+ cmd[1] = (ch->device->lun << 5) |
-+ (ch->voltags ? 0x10 : 0) |
-+ ch_elem_to_typecode(ch,elem);
-+ cmd[2] = (elem >> 8) & 0xff;
-+ cmd[3] = elem & 0xff;
-+ cmd[5] = 1;
-+ cmd[9] = 255;
-+
-+ if (0 == (result = ch_do_scsi(ch, cmd, buffer, 256))) {
-+ cge.cge_status = buffer[18];
-+ cge.cge_flags = 0;
-+ if (buffer[18] & CESTATUS_EXCEPT) {
-+ /* FIXME: fill cge_errno */
-+ }
-+ if (buffer[25] & 0x80) {
-+ cge.cge_flags |= CGE_SRC;
-+ if (buffer[25] & 0x40)
-+ cge.cge_flags |= CGE_INVERT;
-+ elem = (buffer[26]<<8) | buffer[27];
-+ for (i = 0; i < 4; i++) {
-+ if (elem >= ch->firsts[i] &&
-+ elem < ch->firsts[i] + ch->counts[i]) {
-+ cge.cge_srctype = i;
-+ cge.cge_srcunit = elem-ch->firsts[i];
-+ }
-+ }
-+ }
-+ if ((buffer[22] & 0x30) == 0x30) {
-+ cge.cge_flags |= CGE_IDLUN;
-+ cge.cge_id = buffer[23];
-+ cge.cge_lun = buffer[22] & 7;
-+ }
-+ if (buffer[9] & 0x80) {
-+ cge.cge_flags |= CGE_PVOLTAG;
-+ memcpy(cge.cge_pvoltag,buffer+28,36);
-+ }
-+ if (buffer[9] & 0x40) {
-+ cge.cge_flags |= CGE_AVOLTAG;
-+ memcpy(cge.cge_avoltag,buffer+64,36);
-+ }
-+ } else if (ch->voltags) {
-+ ch->voltags = 0;
-+ vprintk("device has no volume tag support%s\n","");
-+ goto voltag_retry;
-+ }
-+ kfree(buffer);
-+ up(&ch->lock);
-+
-+ if (copy_to_user((void*)arg, &cge, sizeof (cge)))
-+ return -EFAULT;
-+ return result;
-+ }
-+
-+ case CHIOINITELEM:
-+ {
-+ down(&ch->lock);
-+ retval = ch_init_elem(ch);
-+ up(&ch->lock);
-+ return retval;
-+ }
-+
-+ case CHIOSVOLTAG:
-+ {
-+ struct changer_set_voltag csv;
-+ int elem;
-+
-+ if (copy_from_user(&csv, (void*)arg, sizeof(csv)))
-+ return -EFAULT;
-+
-+ if (0 != ch_checkrange(ch, csv.csv_type, csv.csv_unit)) {
-+ dprintk("CHIOSVOLTAG: invalid parameter%s\n","");
-+ return -EBADSLT;
-+ }
-+ elem = ch->firsts[csv.csv_type] + csv.csv_unit;
-+ down(&ch->lock);
-+ retval = ch_set_voltag(ch, elem,
-+ csv.csv_flags & CSV_AVOLTAG,
-+ csv.csv_flags & CSV_CLEARTAG,
-+ csv.csv_voltag);
-+ up(&ch->lock);
-+ return retval;
-+ }
-+
-+ default:
-+ return scsi_ioctl(ch->device, cmd, (void*)arg);
-+
-+ }
-+}
-+
-+/* ------------------------------------------------------------------------ */
-+
-+static int ch_probe(struct device *dev)
-+{
-+ struct scsi_device *sd = to_scsi_device(dev);
-+ scsi_changer *ch;
-+
-+ if (sd->type != TYPE_MEDIUM_CHANGER)
-+ return -ENODEV;
-+
-+ ch = kmalloc(sizeof(*ch), GFP_KERNEL);
-+ if (NULL == ch)
-+ return -ENOMEM;
-+
-+ memset(ch,0,sizeof(*ch));
-+ ch->minor = ch_devcount;
-+ sprintf(ch->name,"ch%d",ch->minor);
-+ init_MUTEX(&ch->lock);
-+ ch->device = sd;
-+ ch_readconfig(ch);
-+ if (init)
-+ ch_init_elem(ch);
-+
-+ devfs_mk_cdev(MKDEV(MAJOR_NR,ch->minor),
-+ S_IFCHR | S_IRUGO | S_IWUGO, ch->name);
-+
-+ printk(KERN_INFO "Attached scsi changer %s "
-+ "at scsi%d, channel %d, id %d, lun %d\n",
-+ ch->name, sd->host->host_no, sd->channel, sd->id, sd->lun);
-+
-+ spin_lock(&ch_devlist_lock);
-+ list_add_tail(&ch->list,&ch_devlist);
-+ ch_devcount++;
-+ spin_unlock(&ch_devlist_lock);
-+ return 0;
-+}
-+
-+static int ch_remove(struct device *dev)
-+{
-+ struct scsi_device *sd = to_scsi_device(dev);
-+ struct list_head *item;
-+ scsi_changer *tmp, *ch;
-+
-+ spin_lock(&ch_devlist_lock);
-+ ch = NULL;
-+ list_for_each(item,&ch_devlist) {
-+ tmp = list_entry(item, scsi_changer, list);
-+ if (tmp->device == sd)
-+ ch = tmp;
-+ }
-+ BUG_ON(NULL == ch);
-+ list_del(&ch->list);
-+ spin_unlock(&ch_devlist_lock);
-+
-+ devfs_remove(ch->name);
-+ kfree(ch->dt);
-+ kfree(ch);
-+ ch_devcount--;
-+ return 0;
-+}
-+
-+static int __init init_ch_module(void)
-+{
-+ int rc;
-+
-+ printk(KERN_INFO "SCSI Media Changer driver v" VERSION
-+ " for Linux " UTS_RELEASE "\n");
-+ rc = register_chrdev(MAJOR_NR,"ch",&changer_fops);
-+ if (rc < 0) {
-+ printk("Unable to get major %d for SCSI-Changer\n",
-+ MAJOR_NR);
-+ return rc;
-+ }
-+ ioctl32_register();
-+ rc = scsi_register_driver(&ch_template.gendrv);
-+ if (rc < 0)
-+ goto fail1;
-+ return 0;
-+
-+ fail1:
-+ ioctl32_unregister();
-+ unregister_chrdev(MAJOR_NR, "ch");
-+ return rc;
-+}
-+
-+static void __exit exit_ch_module(void)
-+{
-+ scsi_unregister_driver(&ch_template.gendrv);
-+ unregister_chrdev(MAJOR_NR, "ch");
-+ ioctl32_unregister();
-+}
-+
-+module_init(init_ch_module);
-+module_exit(exit_ch_module);
-+
-+/*
-+ * Local variables:
-+ * c-basic-offset: 8
-+ * End:
-+ */
-diff -urN kernel-source-2.6.6/include/linux/chio.h kernel-source-2.6.6-1/include/linux/chio.h
---- kernel-source-2.6.6/include/linux/chio.h 1970-01-01 10:00:00.000000000 +1000
-+++ kernel-source-2.6.6-1/include/linux/chio.h 2004-03-17 21:24:11.000000000 +1100
-@@ -0,0 +1,168 @@
-+/*
-+ * ioctl interface for the scsi media changer driver
-+ */
-+
-+/* changer element types */
-+#define CHET_MT 0 /* media transport element (robot) */
-+#define CHET_ST 1 /* storage element (media slots) */
-+#define CHET_IE 2 /* import/export element */
-+#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */
-+#define CHET_V1 4 /* vendor specific #1 */
-+#define CHET_V2 5 /* vendor specific #2 */
-+#define CHET_V3 6 /* vendor specific #3 */
-+#define CHET_V4 7 /* vendor specific #4 */
-+
-+
-+/*
-+ * CHIOGPARAMS
-+ * query changer properties
-+ *
-+ * CHIOVGPARAMS
-+ * query vendor-specific element types
-+ *
-+ * accessing elements works by specifing type and unit of the element.
-+ * for eample, storage elements are addressed with type = CHET_ST and
-+ * unit = 0 .. cp_nslots-1
-+ *
-+ */
-+struct changer_params {
-+ int cp_curpicker; /* current transport element */
-+ int cp_npickers; /* number of transport elements (CHET_MT) */
-+ int cp_nslots; /* number of storage elements (CHET_ST) */
-+ int cp_nportals; /* number of import/export elements (CHET_IE) */
-+ int cp_ndrives; /* number of data transfer elements (CHET_DT) */
-+};
-+struct changer_vendor_params {
-+ int cvp_n1; /* number of vendor specific elems (CHET_V1) */
-+ char cvp_label1[16];
-+ int cvp_n2; /* number of vendor specific elems (CHET_V2) */
-+ char cvp_label2[16];
-+ int cvp_n3; /* number of vendor specific elems (CHET_V3) */
-+ char cvp_label3[16];
-+ int cvp_n4; /* number of vendor specific elems (CHET_V4) */
-+ char cvp_label4[16];
-+ int reserved[8];
-+};
-+
-+
-+/*
-+ * CHIOMOVE
-+ * move a medium from one element to another
-+ */
-+struct changer_move {
-+ int cm_fromtype; /* type/unit of source element */
-+ int cm_fromunit;
-+ int cm_totype; /* type/unit of destination element */
-+ int cm_tounit;
-+ int cm_flags;
-+};
-+#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */
-+
-+
-+/*
-+ * CHIOEXCHANGE
-+ * move one medium from element #1 to element #2,
-+ * and another one from element #2 to element #3.
-+ * element #1 and #3 are allowed to be identical.
-+ */
-+struct changer_exchange {
-+ int ce_srctype; /* type/unit of element #1 */
-+ int ce_srcunit;
-+ int ce_fdsttype; /* type/unit of element #2 */
-+ int ce_fdstunit;
-+ int ce_sdsttype; /* type/unit of element #3 */
-+ int ce_sdstunit;
-+ int ce_flags;
-+};
-+#define CE_INVERT1 1
-+#define CE_INVERT2 2
-+
-+
-+/*
-+ * CHIOPOSITION
-+ * move the transport element (robot arm) to a specific element.
-+ */
-+struct changer_position {
-+ int cp_type;
-+ int cp_unit;
-+ int cp_flags;
-+};
-+#define CP_INVERT 1
-+
-+
-+/*
-+ * CHIOGSTATUS
-+ * get element status for all elements of a specific type
-+ */
-+struct changer_element_status {
-+ int ces_type;
-+ unsigned char *ces_data;
-+};
-+#define CESTATUS_FULL 0x01 /* full */
-+#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */
-+#define CESTATUS_EXCEPT 0x04 /* error condition */
-+#define CESTATUS_ACCESS 0x08 /* access allowed */
-+#define CESTATUS_EXENAB 0x10 /* element can export media */
-+#define CESTATUS_INENAB 0x20 /* element can import media */
-+
-+
-+/*
-+ * CHIOGELEM
-+ * get more detailed status informtion for a single element
-+ */
-+struct changer_get_element {
-+ int cge_type; /* type/unit */
-+ int cge_unit;
-+ int cge_status; /* status */
-+ int cge_errno; /* errno */
-+ int cge_srctype; /* source element of the last move/exchange */
-+ int cge_srcunit;
-+ int cge_id; /* scsi id (for data transfer elements) */
-+ int cge_lun; /* scsi lun (for data transfer elements) */
-+ char cge_pvoltag[36]; /* primary volume tag */
-+ char cge_avoltag[36]; /* alternate volume tag */
-+ int cge_flags;
-+};
-+/* flags */
-+#define CGE_ERRNO 0x01 /* errno available */
-+#define CGE_INVERT 0x02 /* media inverted */
-+#define CGE_SRC 0x04 /* media src available */
-+#define CGE_IDLUN 0x08 /* ID+LUN available */
-+#define CGE_PVOLTAG 0x10 /* primary volume tag available */
-+#define CGE_AVOLTAG 0x20 /* alternate volume tag available */
-+
-+
-+/*
-+ * CHIOSVOLTAG
-+ * set volume tag
-+ */
-+struct changer_set_voltag {
-+ int csv_type; /* type/unit */
-+ int csv_unit;
-+ char csv_voltag[36]; /* volume tag */
-+ int csv_flags;
-+};
-+#define CSV_PVOLTAG 0x01 /* primary volume tag */
-+#define CSV_AVOLTAG 0x02 /* alternate volume tag */
-+#define CSV_CLEARTAG 0x04 /* clear volume tag */
-+
-+/* ioctls */
-+#define CHIOMOVE _IOW('c', 1,struct changer_move)
-+#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange)
-+#define CHIOPOSITION _IOW('c', 3,struct changer_position)
-+#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */
-+#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */
-+#define CHIOGPARAMS _IOR('c', 6,struct changer_params)
-+#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status)
-+#define CHIOGELEM _IOW('c',16,struct changer_get_element)
-+#define CHIOINITELEM _IO('c',17)
-+#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag)
-+#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params)
-+
-+/* ---------------------------------------------------------------------- */
-+
-+/*
-+ * Local variables:
-+ * c-basic-offset: 8
-+ * End:
-+ */
-diff -urN kernel-source-2.6.6/include/linux/major.h kernel-source-2.6.6-1/include/linux/major.h
---- kernel-source-2.6.6/include/linux/major.h 2004-04-05 19:49:42.000000000 +1000
-+++ kernel-source-2.6.6-1/include/linux/major.h 2004-04-05 20:54:51.000000000 +1000
-@@ -101,6 +101,7 @@
- #define I2O_MAJOR 80 /* 80->87 */
-
- #define SHMIQ_MAJOR 85 /* Linux/mips, SGI /dev/shmiq */
-+#define SCSI_CHANGER_MAJOR 86
-
- #define IDE6_MAJOR 88
- #define IDE7_MAJOR 89
-diff -urN kernel-source-2.6.6/include/scsi/scsi.h kernel-source-2.6.6-1/include/scsi/scsi.h
---- kernel-source-2.6.6/include/scsi/scsi.h 2004-04-05 19:49:43.000000000 +1000
-+++ kernel-source-2.6.6-1/include/scsi/scsi.h 2004-04-05 20:54:52.000000000 +1000
-@@ -41,6 +41,7 @@
- #define FORMAT_UNIT 0x04
- #define READ_BLOCK_LIMITS 0x05
- #define REASSIGN_BLOCKS 0x07
-+#define INITIALIZE_ELEMENT_STATUS 0x07
- #define READ_6 0x08
- #define WRITE_6 0x0a
- #define SEEK_6 0x0b
-@@ -65,6 +66,7 @@
- #define READ_10 0x28
- #define WRITE_10 0x2a
- #define SEEK_10 0x2b
-+#define POSITION_TO_ELEMENT 0x2b
- #define WRITE_VERIFY 0x2e
- #define VERIFY 0x2f
- #define SEARCH_HIGH 0x30
-@@ -97,6 +99,7 @@
- #define PERSISTENT_RESERVE_OUT 0x5f
- #define REPORT_LUNS 0xa0
- #define MOVE_MEDIUM 0xa5
-+#define EXCHANGE_MEDIUM 0xa6
- #define READ_12 0xa8
- #define WRITE_12 0xaa
- #define WRITE_VERIFY_12 0xae
Modified: trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/series/2.6.11-1
===================================================================
--- trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/series/2.6.11-1 2005-03-08 12:59:56 UTC (rev 2645)
+++ trunk/kernel/source/kernel-source-2.6.11-2.6.11/debian/patches/series/2.6.11-1 2005-03-08 13:54:32 UTC (rev 2646)
@@ -45,4 +45,4 @@
+ docbook-allow-preprocessor-directives-between-kernel-doc-and-function.dpatch
+ docbook-fix-function-parameter-descriptin-in-fbmem.dpatch
+ docbook-move-kernel-doc-comment-next-to-function.dpatch
-
++ drivers-add-scsi_changer.dpatch