diff options
Diffstat (limited to 'drivers/scsi/scsi_devinfo.c')
| -rw-r--r-- | drivers/scsi/scsi_devinfo.c | 423 |
1 files changed, 363 insertions, 60 deletions
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index b8de041bc0a..f969aca0b54 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -6,6 +6,7 @@ #include <linux/moduleparam.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/slab.h> #include <scsi/scsi_device.h> #include <scsi/scsi_devinfo.h> @@ -24,6 +25,13 @@ struct scsi_dev_info_list { unsigned compatible; /* for use with scsi_static_device_list entries */ }; +struct scsi_dev_info_list_table { + struct list_head node; /* our node for being on the master list */ + struct list_head scsi_dev_info_list; /* head of dev info list */ + const char *name; /* name of list for /proc (NULL for global) */ + int key; /* unique numeric identifier */ +}; + static const char spaces[] = " "; /* 16 of them */ static unsigned scsi_default_dev_flags; @@ -161,11 +169,11 @@ static struct { {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, - {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, - {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, - {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, - {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, - {"HITACHI", "OPEN-E", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, + {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, + {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, + {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, + {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, + {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, @@ -190,6 +198,7 @@ static struct { {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, + {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, {"INSITE", "I325VM", NULL, BLIST_KEY}, @@ -219,11 +228,14 @@ static struct { {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, + {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, {"SGI", "RAID3", "*", BLIST_SPARSELUN}, {"SGI", "RAID5", "*", BLIST_SPARSELUN}, {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ @@ -234,6 +246,7 @@ static struct { {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, + {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, @@ -245,6 +258,22 @@ static struct { { NULL, NULL, NULL, 0 }, }; +static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) +{ + struct scsi_dev_info_list_table *devinfo_table; + int found = 0; + + list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) + if (devinfo_table->key == key) { + found = 1; + break; + } + if (!found) + return ERR_PTR(-EINVAL); + + return devinfo_table; +} + /* * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into * devinfo vendor and model strings. @@ -272,7 +301,7 @@ static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, } if (from_length > to_length) printk(KERN_WARNING "%s: %s string '%s' is too long\n", - __FUNCTION__, name, from); + __func__, name, from); } /** @@ -294,11 +323,42 @@ static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, char *strflags, int flags) { + return scsi_dev_info_list_add_keyed(compatible, vendor, model, + strflags, flags, + SCSI_DEVINFO_GLOBAL); +} + +/** + * scsi_dev_info_list_add_keyed - add one dev_info list entry. + * @compatible: if true, null terminate short strings. Otherwise space pad. + * @vendor: vendor string + * @model: model (product) string + * @strflags: integer string + * @flags: if strflags NULL, use this flag value + * @key: specify list to use + * + * Description: + * Create and add one dev_info entry for @vendor, @model, + * @strflags or @flag in list specified by @key. If @compatible, + * add to the tail of the list, do not space pad, and set + * devinfo->compatible. The scsi_static_device_list entries are + * added with @compatible 1 and @clfags NULL. + * + * Returns: 0 OK, -error on failure. + **/ +int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, + char *strflags, int flags, int key) +{ struct scsi_dev_info_list *devinfo; + struct scsi_dev_info_list_table *devinfo_table = + scsi_devinfo_lookup_by_key(key); + + if (IS_ERR(devinfo_table)) + return PTR_ERR(devinfo_table); devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); if (!devinfo) { - printk(KERN_ERR "%s: no memory\n", __FUNCTION__); + printk(KERN_ERR "%s: no memory\n", __func__); return -ENOMEM; } @@ -315,12 +375,100 @@ static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, devinfo->compatible = compatible; if (compatible) - list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); + list_add_tail(&devinfo->dev_info_list, + &devinfo_table->scsi_dev_info_list); else - list_add(&devinfo->dev_info_list, &scsi_dev_info_list); + list_add(&devinfo->dev_info_list, + &devinfo_table->scsi_dev_info_list); return 0; } +EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); + +/** + * scsi_dev_info_list_del_keyed - remove one dev_info list entry. + * @vendor: vendor string + * @model: model (product) string + * @key: specify list to use + * + * Description: + * Remove and destroy one dev_info entry for @vendor, @model + * in list specified by @key. + * + * Returns: 0 OK, -error on failure. + **/ +int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) +{ + struct scsi_dev_info_list *devinfo, *found = NULL; + struct scsi_dev_info_list_table *devinfo_table = + scsi_devinfo_lookup_by_key(key); + + if (IS_ERR(devinfo_table)) + return PTR_ERR(devinfo_table); + + list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, + dev_info_list) { + if (devinfo->compatible) { + /* + * Behave like the older version of get_device_flags. + */ + size_t max; + /* + * XXX why skip leading spaces? If an odd INQUIRY + * value, that should have been part of the + * scsi_static_device_list[] entry, such as " FOO" + * rather than "FOO". Since this code is already + * here, and we don't know what device it is + * trying to work with, leave it as-is. + */ + max = 8; /* max length of vendor */ + while ((max > 0) && *vendor == ' ') { + max--; + vendor++; + } + /* + * XXX removing the following strlen() would be + * good, using it means that for a an entry not in + * the list, we scan every byte of every vendor + * listed in scsi_static_device_list[], and never match + * a single one (and still have to compare at + * least the first byte of each vendor). + */ + if (memcmp(devinfo->vendor, vendor, + min(max, strlen(devinfo->vendor)))) + continue; + /* + * Skip spaces again. + */ + max = 16; /* max length of model */ + while ((max > 0) && *model == ' ') { + max--; + model++; + } + if (memcmp(devinfo->model, model, + min(max, strlen(devinfo->model)))) + continue; + found = devinfo; + } else { + if (!memcmp(devinfo->vendor, vendor, + sizeof(devinfo->vendor)) && + !memcmp(devinfo->model, model, + sizeof(devinfo->model))) + found = devinfo; + } + if (found) + break; + } + + if (found) { + list_del(&found->dev_info_list); + kfree(found); + return 0; + } + + return -ENOENT; +} +EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); /** * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. @@ -363,7 +511,7 @@ static int scsi_dev_info_list_add_str(char *dev_list) strflags = strsep(&next, next_check); if (!model || !strflags) { printk(KERN_ERR "%s: bad dev info string '%s' '%s'" - " '%s'\n", __FUNCTION__, vendor, model, + " '%s'\n", __func__, vendor, model, strflags); res = -EINVAL; } else @@ -380,22 +528,48 @@ static int scsi_dev_info_list_add_str(char *dev_list) * @model: model name * * Description: - * Search the scsi_dev_info_list for an entry matching @vendor and - * @model, if found, return the matching flags value, else return - * the host or global default settings. Called during scan time. + * Search the global scsi_dev_info_list (specified by list zero) + * for an entry matching @vendor and @model, if found, return the + * matching flags value, else return the host or global default + * settings. Called during scan time. **/ int scsi_get_device_flags(struct scsi_device *sdev, const unsigned char *vendor, const unsigned char *model) { + return scsi_get_device_flags_keyed(sdev, vendor, model, + SCSI_DEVINFO_GLOBAL); +} + + +/** + * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list + * @sdev: &scsi_device to get flags for + * @vendor: vendor name + * @model: model name + * @key: list to look up + * + * Description: + * Search the scsi_dev_info_list specified by @key for an entry + * matching @vendor and @model, if found, return the matching + * flags value, else return the host or global default settings. + * Called during scan time. + **/ +int scsi_get_device_flags_keyed(struct scsi_device *sdev, + const unsigned char *vendor, + const unsigned char *model, + int key) +{ struct scsi_dev_info_list *devinfo; - unsigned int bflags; + struct scsi_dev_info_list_table *devinfo_table; + + devinfo_table = scsi_devinfo_lookup_by_key(key); - bflags = sdev->sdev_bflags; - if (!bflags) - bflags = scsi_default_dev_flags; + if (IS_ERR(devinfo_table)) + return PTR_ERR(devinfo_table); - list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { + list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, + dev_info_list) { if (devinfo->compatible) { /* * Behave like the older version of get_device_flags. @@ -445,41 +619,101 @@ int scsi_get_device_flags(struct scsi_device *sdev, return devinfo->flags; } } - return bflags; + /* nothing found, return nothing */ + if (key != SCSI_DEVINFO_GLOBAL) + return 0; + + /* except for the global list, where we have an exception */ + if (sdev->sdev_bflags) + return sdev->sdev_bflags; + + return scsi_default_dev_flags; } +EXPORT_SYMBOL(scsi_get_device_flags_keyed); #ifdef CONFIG_SCSI_PROC_FS -/* - * proc_scsi_dev_info_read: dump the scsi_dev_info_list via - * /proc/scsi/device_info - */ -static int proc_scsi_devinfo_read(char *buffer, char **start, - off_t offset, int length) +struct double_list { + struct list_head *top; + struct list_head *bottom; +}; + +static int devinfo_seq_show(struct seq_file *m, void *v) { - struct scsi_dev_info_list *devinfo; - int size, len = 0; - off_t begin = 0; - off_t pos = 0; - - list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { - size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", - devinfo->vendor, devinfo->model, devinfo->flags); - len += size; - pos = begin + len; - if (pos < offset) { - len = 0; - begin = pos; + struct double_list *dl = v; + struct scsi_dev_info_list_table *devinfo_table = + list_entry(dl->top, struct scsi_dev_info_list_table, node); + struct scsi_dev_info_list *devinfo = + list_entry(dl->bottom, struct scsi_dev_info_list, + dev_info_list); + + if (devinfo_table->scsi_dev_info_list.next == dl->bottom && + devinfo_table->name) + seq_printf(m, "[%s]:\n", devinfo_table->name); + + seq_printf(m, "'%.8s' '%.16s' 0x%x\n", + devinfo->vendor, devinfo->model, devinfo->flags); + return 0; +} + +static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) +{ + struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); + loff_t pos = *ppos; + + if (!dl) + return NULL; + + list_for_each(dl->top, &scsi_dev_info_list) { + struct scsi_dev_info_list_table *devinfo_table = + list_entry(dl->top, struct scsi_dev_info_list_table, + node); + list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) + if (pos-- == 0) + return dl; + } + + kfree(dl); + return NULL; +} + +static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) +{ + struct double_list *dl = v; + struct scsi_dev_info_list_table *devinfo_table = + list_entry(dl->top, struct scsi_dev_info_list_table, node); + + ++*ppos; + dl->bottom = dl->bottom->next; + while (&devinfo_table->scsi_dev_info_list == dl->bottom) { + dl->top = dl->top->next; + if (dl->top == &scsi_dev_info_list) { + kfree(dl); + return NULL; } - if (pos > offset + length) - goto stop_output; + devinfo_table = list_entry(dl->top, + struct scsi_dev_info_list_table, + node); + dl->bottom = devinfo_table->scsi_dev_info_list.next; } -stop_output: - *start = buffer + (offset - begin); /* Start of wanted data */ - len -= (offset - begin); /* Start slop */ - if (len > length) - len = length; /* Ending slop */ - return (len); + return dl; +} + +static void devinfo_seq_stop(struct seq_file *m, void *v) +{ + kfree(v); +} + +static const struct seq_operations scsi_devinfo_seq_ops = { + .start = devinfo_seq_start, + .next = devinfo_seq_next, + .stop = devinfo_seq_stop, + .show = devinfo_seq_show, +}; + +static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &scsi_devinfo_seq_ops); } /* @@ -489,11 +723,12 @@ stop_output: * integer value of flag to the scsi device info list. * To use, echo "vendor:model:flag" > /proc/scsi/device_info */ -static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, - unsigned long length, void *data) +static ssize_t proc_scsi_devinfo_write(struct file *file, + const char __user *buf, + size_t length, loff_t *ppos) { char *buffer; - int err = length; + ssize_t err = length; if (!buf || length>PAGE_SIZE) return -EINVAL; @@ -517,6 +752,15 @@ out: free_page((unsigned long)buffer); return err; } + +static const struct file_operations scsi_devinfo_proc_fops = { + .owner = THIS_MODULE, + .open = proc_scsi_devinfo_open, + .read = seq_read, + .write = proc_scsi_devinfo_write, + .llseek = seq_lseek, + .release = seq_release, +}; #endif /* CONFIG_SCSI_PROC_FS */ module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); @@ -530,23 +774,82 @@ MODULE_PARM_DESC(default_dev_flags, "scsi default device flag integer value"); /** - * scsi_dev_info_list_delete - called from scsi.c:exit_scsi to remove the scsi_dev_info_list. + * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list **/ void scsi_exit_devinfo(void) { - struct list_head *lh, *lh_next; - struct scsi_dev_info_list *devinfo; - #ifdef CONFIG_SCSI_PROC_FS remove_proc_entry("scsi/device_info", NULL); #endif - list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { + scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); +} + +/** + * scsi_dev_info_add_list - add a new devinfo list + * @key: key of the list to add + * @name: Name of the list to add (for /proc/scsi/device_info) + * + * Adds the requested list, returns zero on success, -EEXIST if the + * key is already registered to a list, or other error on failure. + */ +int scsi_dev_info_add_list(int key, const char *name) +{ + struct scsi_dev_info_list_table *devinfo_table = + scsi_devinfo_lookup_by_key(key); + + if (!IS_ERR(devinfo_table)) + /* list already exists */ + return -EEXIST; + + devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); + + if (!devinfo_table) + return -ENOMEM; + + INIT_LIST_HEAD(&devinfo_table->node); + INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); + devinfo_table->name = name; + devinfo_table->key = key; + list_add_tail(&devinfo_table->node, &scsi_dev_info_list); + + return 0; +} +EXPORT_SYMBOL(scsi_dev_info_add_list); + +/** + * scsi_dev_info_remove_list - destroy an added devinfo list + * @key: key of the list to destroy + * + * Iterates over the entire list first, freeing all the values, then + * frees the list itself. Returns 0 on success or -EINVAL if the key + * can't be found. + */ +int scsi_dev_info_remove_list(int key) +{ + struct list_head *lh, *lh_next; + struct scsi_dev_info_list_table *devinfo_table = + scsi_devinfo_lookup_by_key(key); + + if (IS_ERR(devinfo_table)) + /* no such list */ + return -EINVAL; + + /* remove from the master list */ + list_del(&devinfo_table->node); + + list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { + struct scsi_dev_info_list *devinfo; + devinfo = list_entry(lh, struct scsi_dev_info_list, dev_info_list); kfree(devinfo); } + kfree(devinfo_table); + + return 0; } +EXPORT_SYMBOL(scsi_dev_info_remove_list); /** * scsi_init_devinfo - set up the dynamic device list. @@ -562,10 +865,14 @@ int __init scsi_init_devinfo(void) #endif int error, i; - error = scsi_dev_info_list_add_str(scsi_dev_flags); + error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); if (error) return error; + error = scsi_dev_info_list_add_str(scsi_dev_flags); + if (error) + goto out; + for (i = 0; scsi_static_device_list[i].vendor; i++) { error = scsi_dev_info_list_add(1 /* compatibile */, scsi_static_device_list[i].vendor, @@ -577,15 +884,11 @@ int __init scsi_init_devinfo(void) } #ifdef CONFIG_SCSI_PROC_FS - p = create_proc_entry("scsi/device_info", 0, NULL); + p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); if (!p) { error = -ENOMEM; goto out; } - - p->owner = THIS_MODULE; - p->get_info = proc_scsi_devinfo_read; - p->write_proc = proc_scsi_devinfo_write; #endif /* CONFIG_SCSI_PROC_FS */ out: |