Signed-off-by: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx> --- On Tue, 15 Sep 2009, James Bottomley wrote: > On Tue, 2009-09-15 at 08:33 -0700, Greg KH wrote: > > On Sat, Sep 12, 2009 at 09:30:07AM -0500, James Bottomley wrote: > > > On Fri, 2009-09-11 at 21:33 -0700, Greg KH wrote: > > > > On Fri, Sep 11, 2009 at 07:56:23PM -0700, Andrew Vasquez wrote: > > > > > On Fri, 11 Sep 2009, Greg KH wrote: > > > > > > > > > > > On Fri, Sep 11, 2009 at 05:38:08PM -0700, Andrew Vasquez wrote: > > > > > > > Randy Dunlap noted: > > > > > > > > > > > > > > when CONFIG_MODULES=n: > > > > > > > > > > > > > > drivers/scsi/qla2xxx/qla_os.c:2685: error: dereferencing pointer to incomplete type > > > > > > > > > > > > > > in > > > > > > > > > > > > > > kobject_uevent_env(&(&vha->hw->pdev->driver->driver)->owner->mkobj.kobj, > > > > > > > KOBJ_CHANGE, envp); > > > > > > > > > > > > > > Trigger kobject event on the 'struct device' hanging off the pci_dev. > > > > > > > > > > > > Um, why? What are you trying to do here? kobject change should not be > > > > > > for a device, or a "normal" kobject. > > > > > > > > > > > > What do you expect userspace to do with this? Where have you documented > > > > > > it? > > > > > > > > > > The purpose was described here: > > > > > > > > > > http://article.gmane.org/gmane.linux.scsi/54155 > > > > > > > > > > Basically we'd like to instruct user-space to retrieve a blob of data > > > > > automatically. > > > > > > > > Hm, like a firmware object perhaps? > > > > > > > > > Original implementation used the kboject hanging off > > > > > the module which does not exist when CONFIG_MODULES=n. It was > > > > > suggested that perhaps an alternative would be to use 'struct device' > > > > > kobj. Any tips on how to trigger such a driver-specific event, > > > > > perhaps a dedicated kobject exported by the driver itself??? > > > > > > > > Why not use the firmware interface for it, that is what it is designed > > > > for, and you will not have to craft any new udev rules. > > > > > > The data is going the wrong way to use the current firmware interface, > > > which is designed to load data from userspace into the kernel. For this > > > interface, we want the data to go the other way (i.e. the kernel has a > > > blob of dump data it would like userspace to save if it can). > > > > Ick. > > It's a natural debugging event ... the user can simply program the > system to discard the dump. > > > > I'd be amenable to updating the firmware interface to do this, but it > > > looks like adding a completely new codepath, which it's not clear even > > > belongs there. > > > > Well, I don't think it deserves a kobject change event, as that means > > something a bit different to userspace today, right? > > Well, the documentation (in include/linux/kobject.h) does say that > KOBJ_CHANGED is the dumping ground for events that don't match anything > else, which this one seems to qualify as. What else do you suggest? > > > Either way, I see no documentation being added to the Documentation/ABI/ > > directory describing what is happening here, that needs to be added at > > the least. > > OK, we can add that in the next go around. > > Andrew, I actually dropped the patch (just this one, not the rest of the > qla2xxx patches) from the tree, so we can work on updating this as a > whole. Ok, how about this squashed commit as a first stab at documenting the ABI??? Thanks, AV Documentation/ABI/stable/sysfs-driver-qla2xxx | 8 +++ drivers/scsi/qla2xxx/qla_dbg.c | 78 +++++++----------------- drivers/scsi/qla2xxx/qla_def.h | 5 ++ drivers/scsi/qla2xxx/qla_gbl.h | 1 + drivers/scsi/qla2xxx/qla_os.c | 35 +++++++++++ 5 files changed, 72 insertions(+), 55 deletions(-) create mode 100644 Documentation/ABI/stable/sysfs-driver-qla2xxx diff --git a/Documentation/ABI/stable/sysfs-driver-qla2xxx b/Documentation/ABI/stable/sysfs-driver-qla2xxx new file mode 100644 index 0000000..9a59d84 --- /dev/null +++ b/Documentation/ABI/stable/sysfs-driver-qla2xxx @@ -0,0 +1,8 @@ +What: /sys/bus/pci/drivers/qla2xxx/.../devices/* +Date: September 2009 +Contact: QLogic Linux Driver <linux-driver@xxxxxxxxxx> +Description: qla2xxx-udev.sh currently looks for uevent CHANGE events to + signal a firmware-dump has been generated by the driver and is + ready for retrieval. +Users: qla2xxx-udev.sh. Proposed changes should be mailed to + linux-driver@xxxxxxxxxx diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index cca8e4a..cb2eca4 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -377,6 +377,24 @@ qla25xx_copy_mq(struct qla_hw_data *ha, void *ptr, uint32_t **last_chain) return ptr + sizeof(struct qla2xxx_mq_chain); } +static void +qla2xxx_dump_post_process(scsi_qla_host_t *vha, int rval) +{ + struct qla_hw_data *ha = vha->hw; + + if (rval != QLA_SUCCESS) { + qla_printk(KERN_WARNING, ha, + "Failed to dump firmware (%x)!!!\n", rval); + ha->fw_dumped = 0; + } else { + qla_printk(KERN_INFO, ha, + "Firmware dump saved to temp buffer (%ld/%p).\n", + vha->host_no, ha->fw_dump); + ha->fw_dumped = 1; + qla2x00_post_uevent_work(vha, QLA_UEVENT_CODE_FW_DUMP); + } +} + /** * qla2300_fw_dump() - Dumps binary data from the 2300 firmware. * @ha: HA context @@ -530,17 +548,7 @@ qla2300_fw_dump(scsi_qla_host_t *vha, int hardware_locked) if (rval == QLA_SUCCESS) qla2xxx_copy_queues(ha, nxt); - if (rval != QLA_SUCCESS) { - qla_printk(KERN_WARNING, ha, - "Failed to dump firmware (%x)!!!\n", rval); - ha->fw_dumped = 0; - - } else { - qla_printk(KERN_INFO, ha, - "Firmware dump saved to temp buffer (%ld/%p).\n", - base_vha->host_no, ha->fw_dump); - ha->fw_dumped = 1; - } + qla2xxx_dump_post_process(base_vha, rval); qla2300_fw_dump_failed: if (!hardware_locked) @@ -737,17 +745,7 @@ qla2100_fw_dump(scsi_qla_host_t *vha, int hardware_locked) if (rval == QLA_SUCCESS) qla2xxx_copy_queues(ha, &fw->risc_ram[cnt]); - if (rval != QLA_SUCCESS) { - qla_printk(KERN_WARNING, ha, - "Failed to dump firmware (%x)!!!\n", rval); - ha->fw_dumped = 0; - - } else { - qla_printk(KERN_INFO, ha, - "Firmware dump saved to temp buffer (%ld/%p).\n", - base_vha->host_no, ha->fw_dump); - ha->fw_dumped = 1; - } + qla2xxx_dump_post_process(base_vha, rval); qla2100_fw_dump_failed: if (!hardware_locked) @@ -984,17 +982,7 @@ qla24xx_fw_dump(scsi_qla_host_t *vha, int hardware_locked) qla24xx_copy_eft(ha, nxt); qla24xx_fw_dump_failed_0: - if (rval != QLA_SUCCESS) { - qla_printk(KERN_WARNING, ha, - "Failed to dump firmware (%x)!!!\n", rval); - ha->fw_dumped = 0; - - } else { - qla_printk(KERN_INFO, ha, - "Firmware dump saved to temp buffer (%ld/%p).\n", - base_vha->host_no, ha->fw_dump); - ha->fw_dumped = 1; - } + qla2xxx_dump_post_process(base_vha, rval); qla24xx_fw_dump_failed: if (!hardware_locked) @@ -1305,17 +1293,7 @@ qla25xx_fw_dump(scsi_qla_host_t *vha, int hardware_locked) } qla25xx_fw_dump_failed_0: - if (rval != QLA_SUCCESS) { - qla_printk(KERN_WARNING, ha, - "Failed to dump firmware (%x)!!!\n", rval); - ha->fw_dumped = 0; - - } else { - qla_printk(KERN_INFO, ha, - "Firmware dump saved to temp buffer (%ld/%p).\n", - base_vha->host_no, ha->fw_dump); - ha->fw_dumped = 1; - } + qla2xxx_dump_post_process(base_vha, rval); qla25xx_fw_dump_failed: if (!hardware_locked) @@ -1628,17 +1606,7 @@ qla81xx_fw_dump(scsi_qla_host_t *vha, int hardware_locked) } qla81xx_fw_dump_failed_0: - if (rval != QLA_SUCCESS) { - qla_printk(KERN_WARNING, ha, - "Failed to dump firmware (%x)!!!\n", rval); - ha->fw_dumped = 0; - - } else { - qla_printk(KERN_INFO, ha, - "Firmware dump saved to temp buffer (%ld/%p).\n", - base_vha->host_no, ha->fw_dump); - ha->fw_dumped = 1; - } + qla2xxx_dump_post_process(base_vha, rval); qla81xx_fw_dump_failed: if (!hardware_locked) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 2150618..d8ce310 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2123,6 +2123,7 @@ enum qla_work_type { QLA_EVT_ASYNC_LOGIN_DONE, QLA_EVT_ASYNC_LOGOUT, QLA_EVT_ASYNC_LOGOUT_DONE, + QLA_EVT_UEVENT, }; @@ -2146,6 +2147,10 @@ struct qla_work_evt { #define QLA_LOGIO_LOGIN_RETRIED BIT_0 u16 data[2]; } logio; + struct { + u32 code; +#define QLA_UEVENT_CODE_FW_DUMP 0 + } uevent; } u; }; diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index f3d1d1a..14e0562 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -92,6 +92,7 @@ extern int qla2x00_post_async_logout_work(struct scsi_qla_host *, fc_port_t *, uint16_t *); extern int qla2x00_post_async_logout_done_work(struct scsi_qla_host *, fc_port_t *, uint16_t *); +extern int qla2x00_post_uevent_work(struct scsi_qla_host *, u32); extern int qla81xx_restart_mpi_firmware(scsi_qla_host_t *); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index b79fca7..ecf2a40 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -11,6 +11,7 @@ #include <linux/delay.h> #include <linux/kthread.h> #include <linux/mutex.h> +#include <linux/kobject.h> #include <scsi/scsi_tcq.h> #include <scsi/scsicam.h> @@ -2653,6 +2654,37 @@ qla2x00_post_async_work(login_done, QLA_EVT_ASYNC_LOGIN_DONE); qla2x00_post_async_work(logout, QLA_EVT_ASYNC_LOGOUT); qla2x00_post_async_work(logout_done, QLA_EVT_ASYNC_LOGOUT_DONE); +int +qla2x00_post_uevent_work(struct scsi_qla_host *vha, u32 code) +{ + struct qla_work_evt *e; + + e = qla2x00_alloc_work(vha, QLA_EVT_UEVENT); + if (!e) + return QLA_FUNCTION_FAILED; + + e->u.uevent.code = code; + return qla2x00_post_work(vha, e); +} + +static void +qla2x00_uevent_emit(struct scsi_qla_host *vha, u32 code) +{ + char event_string[40]; + char *envp[] = { event_string, NULL }; + + switch (code) { + case QLA_UEVENT_CODE_FW_DUMP: + snprintf(event_string, sizeof(event_string), "FW_DUMP=%ld", + vha->host_no); + break; + default: + /* do nothing */ + break; + } + kobject_uevent_env(&vha->hw->pdev->dev.kobj, KOBJ_CHANGE, envp); +} + void qla2x00_do_work(struct scsi_qla_host *vha) { @@ -2690,6 +2722,9 @@ qla2x00_do_work(struct scsi_qla_host *vha) qla2x00_async_logout_done(vha, e->u.logio.fcport, e->u.logio.data); break; + case QLA_EVT_UEVENT: + qla2x00_uevent_emit(vha, e->u.uevent.code); + break; } if (e->flags & QLA_EVT_FLAG_FREE) kfree(e); -- 1.6.5.rc0 -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
