RE: [Announce] megaraid_mbox 2.20.4.4 patch

From: Ju, Seokmann
Date: Thu Feb 03 2005 - 15:04:41 EST

On Wednesday, February 02, 2005 5:43 PM, James wrote:
> > + .sdev_attrs = megaraid_device_attrs,
> > + .shost_attrs = megaraid_class_device_attrs,
>
> These are, perhaps, slightly confusing names. The terms device and
> class_device have well defined meanings in the generic device model,
> neither of which is what you mean here. Why not simply
> megaraid_sdev_attrs and megaraid_shost_attrs?
>
> Other than this, it looks fine to me too.

Thanks for the feedback.

Here, I'm resubmitting the patch with the changes.

Thanks,

Seokmann
LSI Logic Co.

---

diff -Naur 2.20.4.1/Documentation/scsi/ChangeLog.megaraid
2.20.4.5/Documentation/scsi/ChangeLog.megaraid
--- 2.20.4.1/Documentation/scsi/ChangeLog.megaraid 2005-02-03
14:23:54.696328704 -0500
+++ 2.20.4.5/Documentation/scsi/ChangeLog.megaraid 2005-02-03
14:24:23.778907480 -0500
@@ -1,3 +1,105 @@
+Release Date : Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@xxxxxxxx>
+Current Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
+Older Version : 2.20.4.4 (scsi module), 2.20.2.4 (cmm module)
+
+1. Modified name of two attributes in scsi_host_template.
+ On Wed, 2005-02-02 at 10:56 -0500, Ju, Seokmann wrote:
+ > + .sdev_attrs = megaraid_device_attrs,
+ > + .shost_attrs =
megaraid_class_device_attrs,
+
+ These are, perhaps, slightly confusing names.
+ The terms device and class_device have well defined meanings in the
+ generic device model, neither of which is what you mean here.
+ Why not simply megaraid_sdev_attrs and megaraid_shost_attrs?
+
+ Other than this, it looks fine to me too.
+
+Release Date : Thu Jan 27 00:01:03 EST 2005 - Atul Mukker
<atulm@xxxxxxxx>
+Current Version : 2.20.4.4 (scsi module), 2.20.2.5 (cmm module)
+Older Version : 2.20.4.3 (scsi module), 2.20.2.4 (cmm module)
+
+1. Bump up the version of scsi module due to its conflict.
+
+Release Date : Thu Jan 21 00:01:03 EST 2005 - Atul Mukker
<atulm@xxxxxxxx>
+Current Version : 2.20.4.3 (scsi module), 2.20.2.5 (cmm module)
+Older Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
+
+1. Remove driver ioctl for logical drive to scsi address translation
and
+ replace with the sysfs attribute. To remove drives and change
+ capacity, application shall now use the device attribute to get the
+ logical drive number for a scsi device. For adding newly created
+ logical drives, class device attribute would be required to uniquely
+ identify each controller.
+ - Atul Mukker <atulm@xxxxxxxx>
+
+ "James, I've been thinking about this a little more, and you may be
on
+ to something here. Let each driver add files as such:"
+
+ - Matt Domsch <Matt_Domsch@xxxxxxxx>, 12.15.2004
+ linux-scsi mailing list
+
+
+ "Then, if you simply publish your LD number as an extra parameter of
+ the device, you can look through /sys to find it."
+
+ - James Bottomley <James.Bottomley@xxxxxxxxxxxx>, 01.03.2005
+ linux-scsi mailing list
+
+
+ "I don't see why not ... it's your driver, you can publish whatever
+ extra information you need as scsi_device attributes; that was one
of
+ the designs of the extensible attribute system."
+
+ - James Bottomley <James.Bottomley@xxxxxxxxxxxx>, 01.06.2005
+ linux-scsi mailing list
+
+2. Add AMI megaraid support - Brian King <brking@xxxxxxxxxxx>
+ PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_VENDOR_ID_AMI, PCI_SUBSYS_ID_PERC3_DC,
+
+3. Make some code static - Adrian Bunk <bunk@xxxxxxxxx>
+ Date: Mon, 15 Nov 2004 03:14:57 +0100
+
+ The patch below makes some needlessly global code static.
+ -wait_queue_head_t wait_q;
+ +static wait_queue_head_t wait_q;
+
+ Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>
+
+4. Added NEC ROMB support - NEC MegaRAID PCI Express ROMB controller
+ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E,
+ PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E,
+
+5. Fixed Tape drive issue : For any Direct CDB command to physical
device
+ including tape, timeout value set by driver was 10 minutes. With
this
+ value, most of command will return within timeout. However, for
those
+ command like ERASE or FORMAT, it takes more than an hour depends on
+ capacity of the device and the command could be terminated before it

+ completes.
+ To address this issue, the 'timeout' field in the DCDB command will
+ have NO TIMEOUT (i.e., 4) value as its timeout on DCDB command.
+
+
+
+Release Date : Thu Dec 9 19:10:23 EST 2004
+ - Sreenivas Bagalkote <sreenib@xxxxxxxx>
+
+Current Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
+Older Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
+
+i. Introduced driver ioctl that returns scsi address for a given ld.
+
+ "Why can't the existing sysfs interfaces be used to do this?"
+ - Brian King (brking@xxxxxxxxxx)
+
+ "I've looked into solving this another way, but I cannot see how
+ to get this driver-private mapping of logical drive number-> HCTL
+ without putting code something like this into the driver."
+
+ "...and by providing a mapping a function to userspace, the driver
+ is free to change its mapping algorithm in the future if necessary
.."
+ - Matt Domsch (Matt_Domsch@xxxxxxxx)
+
Release Date : Thu Dec 9 19:02:14 EST 2004 - Sreenivas Bagalkote
<sreenib@xxxxxxxx>

Current Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
@@ -13,7 +115,7 @@
i. Handle IOCTL cmd timeouts more properly.

ii. pci_dma_sync_{sg,single}_for_cpu was introduced into megaraid_mbox
- incorrectly (instead of _for_device). Changed to appropriate
+ incorrectly (instead of _for_device). Changed to appropriate
pci_dma_sync_{sg,single}_for_device.

Release Date : Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote
<sreenib@xxxxxxxx>
diff -Naur 2.20.4.1/drivers/scsi/megaraid/Kconfig.megaraid
2.20.4.5/drivers/scsi/megaraid/Kconfig.megaraid
--- 2.20.4.1/drivers/scsi/megaraid/Kconfig.megaraid 2005-02-03
14:23:54.695328856 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/Kconfig.megaraid 2005-02-03
14:24:23.775907936 -0500
@@ -59,6 +59,7 @@
INTEL RAID Controller SRCU51L 1000:1960:8086:0520
FSC MegaRAID PCI Express ROMB 1000:0408:1734:1065
ACER MegaRAID ROMB-2E 1000:0408:1025:004D
+ NEC MegaRAID PCI Express ROMB 1000:0408:1033:8287

To compile this driver as a module, choose M here: the
module will be called megaraid_mbox
diff -Naur 2.20.4.1/drivers/scsi/megaraid/mega_common.h
2.20.4.5/drivers/scsi/megaraid/mega_common.h
--- 2.20.4.1/drivers/scsi/megaraid/mega_common.h 2005-02-03
14:23:54.693329160 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/mega_common.h 2005-02-03
14:24:23.776907784 -0500
@@ -221,6 +221,9 @@
#define MRAID_IS_LOGICAL(adp, scp) \
(SCP2CHANNEL(scp) == (adp)->max_channel) ? 1 : 0

+#define MRAID_IS_LOGICAL_SDEV(adp, sdev) \
+ (sdev->channel == (adp)->max_channel) ? 1 : 0
+
#define MRAID_GET_DEVICE_MAP(adp, scp, p_chan, target, islogical) \
/* \
* Is the request coming for the virtual channel \
diff -Naur 2.20.4.1/drivers/scsi/megaraid/megaraid_ioctl.h
2.20.4.5/drivers/scsi/megaraid/megaraid_ioctl.h
--- 2.20.4.1/drivers/scsi/megaraid/megaraid_ioctl.h 2005-02-03
14:23:54.694329008 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/megaraid_ioctl.h 2005-02-03
14:24:23.776907784 -0500
@@ -291,5 +291,6 @@

int mraid_mm_register_adp(mraid_mmadp_t *);
int mraid_mm_unregister_adp(uint32_t);
+uint32_t mraid_mm_adapter_app_handle(uint32_t);

#endif /* _MEGARAID_IOCTL_H_ */
diff -Naur 2.20.4.1/drivers/scsi/megaraid/megaraid_mbox.c
2.20.4.5/drivers/scsi/megaraid/megaraid_mbox.c
--- 2.20.4.1/drivers/scsi/megaraid/megaraid_mbox.c 2005-02-03
14:23:54.694329008 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/megaraid_mbox.c 2005-02-03
14:24:23.776907784 -0500
@@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mbox.c
- * Version : v2.20.4.1 (Nov 04 2004)
+ * Version : v2.20.4.5 (Feb 03 2005)
*
* Authors:
* Atul Mukker <Atul.Mukker@xxxxxxxx>
@@ -60,12 +60,11 @@
* INTEL RAID Controller SROMBU42E 1000 0408 8086 3499
* INTEL RAID Controller SRCU51L 1000 1960 8086 0520
*
- *
* FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065
*
- *
* ACER MegaRAID ROMB-2E 1000 0408 1025 004D
*
+ * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287
*
* For history of changes, see Documentation/ChangeLog.megaraid
*/
@@ -91,6 +90,9 @@
static int megaraid_mbox_setup_dma_pools(adapter_t *);
static void megaraid_mbox_teardown_dma_pools(adapter_t *);

+static int megaraid_sysfs_alloc_resources(adapter_t *);
+static void megaraid_sysfs_free_resources(adapter_t *);
+
static int megaraid_abort_handler(struct scsi_cmnd *);
static int megaraid_reset_handler(struct scsi_cmnd *);

@@ -121,6 +123,9 @@

static void megaraid_mbox_dpc(unsigned long);

+static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *);
+static ssize_t megaraid_sysfs_show_ldnum(struct device *, char *);
+
static int megaraid_cmm_register(adapter_t *);
static int megaraid_cmm_unregister(adapter_t *);
static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t);
@@ -197,7 +202,7 @@
* ### global data ###
*/
static uint8_t megaraid_mbox_version[8] =
- { 0x02, 0x20, 0x04, 0x00, 9, 27, 20, 4 };
+ { 0x02, 0x20, 0x04, 0x05, 2, 3, 20, 5 };


/*
@@ -301,6 +306,12 @@
PCI_SUBSYS_ID_PERC3_SC,
},
{
+ PCI_VENDOR_ID_AMI,
+ PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_VENDOR_ID_AMI,
+ PCI_SUBSYS_ID_PERC3_DC,
+ },
+ {
PCI_VENDOR_ID_LSI_LOGIC,
PCI_DEVICE_ID_MEGARAID_SCSI_320_0,
PCI_VENDOR_ID_LSI_LOGIC,
@@ -438,6 +449,12 @@
PCI_VENDOR_ID_AI,
PCI_SUBSYS_ID_MEGARAID_ACER_ROMB_2E,
},
+ {
+ PCI_VENDOR_ID_LSI_LOGIC,
+ PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E,
+ PCI_VENDOR_ID_NEC,
+ PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E,
+ },
{0} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, pci_id_table_g);
@@ -454,6 +471,29 @@
};


+
+// definitions for the device attributes for exporting logical drive number
+// for a scsi address (Host, Channel, Id, Lun)
+
+CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR,
megaraid_sysfs_show_app_hndl,
+ NULL);
+
+// Host template initializer for megaraid mbox sysfs device attributes
+static struct class_device_attribute *megaraid_shost_attrs[] = {
+ &class_device_attr_megaraid_mbox_app_hndl,
+ NULL,
+};
+
+
+DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL);
+
+// Host template initializer for megaraid mbox sysfs device attributes
+static struct device_attribute *megaraid_sdev_attrs[] = {
+ &dev_attr_megaraid_mbox_ld,
+ NULL,
+};
+
+
/*
* Scsi host template for megaraid unified driver
*/
@@ -467,6 +507,8 @@
.eh_bus_reset_handler = megaraid_reset_handler,
.eh_host_reset_handler = megaraid_reset_handler,
.use_clustering = ENABLE_CLUSTERING,
+ .sdev_attrs = megaraid_sdev_attrs,
+ .shost_attrs = megaraid_shost_attrs,
};


@@ -953,6 +995,8 @@
}
adapter->device_ids[adapter->max_channel][adapter->init_id]
=
0xFF;
+
+ raid_dev->random_del_supported = 1;
}

/*
@@ -977,6 +1021,14 @@
*/
adapter->cmd_per_lun = megaraid_cmd_per_lun;

+ /*
+ * Allocate resources required to issue FW calls, when sysfs is
+ * accessed
+ */
+ if (megaraid_sysfs_alloc_resources(adapter) != 0) {
+ goto out_alloc_cmds;
+ }
+
// Set the DMA mask to 64-bit. All supported controllers as capable
of
// DMA in this range
if (pci_set_dma_mask(adapter->pdev, 0xFFFFFFFFFFFFFFFFULL) != 0) {
@@ -984,7 +1036,7 @@
con_log(CL_ANN, (KERN_WARNING
"megaraid: could not set DMA mask for 64-bit.\n"));

- goto out_alloc_cmds;
+ goto out_free_sysfs_res;
}

// setup tasklet for DPC
@@ -996,6 +1048,8 @@

return 0;

+out_free_sysfs_res:
+ megaraid_sysfs_free_resources(adapter);
out_alloc_cmds:
megaraid_free_cmd_packets(adapter);
out_free_irq:
@@ -1025,6 +1079,8 @@

tasklet_kill(&adapter->dpc_h);

+ megaraid_sysfs_free_resources(adapter);
+
megaraid_free_cmd_packets(adapter);

free_irq(adapter->irq, adapter);
@@ -1559,12 +1615,14 @@

if (scb->dma_direction == PCI_DMA_TODEVICE) {
if (!scb->scp->use_sg) { // sg list not used
- pci_dma_sync_single_for_device(adapter->pdev,
ccb->buf_dma_h,
+ pci_dma_sync_single_for_device(adapter->pdev,
+ ccb->buf_dma_h,
scb->scp->request_bufflen,
PCI_DMA_TODEVICE);
}
else {
- pci_dma_sync_sg_for_device(adapter->pdev,
scb->scp->request_buffer,
+ pci_dma_sync_sg_for_device(adapter->pdev,
+ scb->scp->request_buffer,
scb->scp->use_sg, PCI_DMA_TODEVICE);
}
}
@@ -2107,7 +2165,8 @@
channel = scb->dev_channel;
target = scb->dev_target;

- pthru->timeout = 1; // 0=6sec, 1=60sec, 2=10min, 3=3hrs
+ // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
+ pthru->timeout = 4;
pthru->ars = 1;
pthru->islogical = 0;
pthru->channel = 0;
@@ -2155,7 +2214,8 @@
channel = scb->dev_channel;
target = scb->dev_target;

- epthru->timeout = 1; // 0=6sec, 1=60sec, 2=10min, 3=3hrs
+ // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
+ epthru->timeout = 4;
epthru->ars = 1;
epthru->islogical = 0;
epthru->channel = 0;
@@ -3306,7 +3366,7 @@
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));

raw_mbox[0] = FC_DEL_LOGDRV;
- raw_mbox[0] = OP_SUP_DEL_LOGDRV;
+ raw_mbox[2] = OP_SUP_DEL_LOGDRV;

// Issue the command
rval = 0;
@@ -3719,8 +3779,9 @@

spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);

- scb->state = SCB_ACTIVE;
- scb->dma_type = MRAID_DMA_NONE;
+ scb->state = SCB_ACTIVE;
+ scb->dma_type = MRAID_DMA_NONE;
+ scb->dma_direction = PCI_DMA_NONE;

ccb = (mbox_ccb_t *)scb->ccb;
mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
@@ -3888,6 +3949,324 @@
*/


+
+/**
+ * megaraid_sysfs_alloc_resources - allocate sysfs related resources
+ *
+ * Allocate packets required to issue FW calls whenever the sysfs
attributes
+ * are read. These attributes would require up-to-date information from the
+ * FW. Also set up resources for mutual exclusion to share these resources
and
+ * the wait queue.
+ *
+ * @param adapter : controller's soft state
+ *
+ * @return 0 on success
+ * @return -ERROR_CODE on failure
+ */
+static int
+megaraid_sysfs_alloc_resources(adapter_t *adapter)
+{
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+ int rval = 0;
+
+ raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL);
+
+ raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL);
+
+ raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev,
+ PAGE_SIZE, &raid_dev->sysfs_buffer_dma);
+
+ if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 ||
+ !raid_dev->sysfs_buffer) {
+
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ __LINE__));
+
+ rval = -ENOMEM;
+
+ megaraid_sysfs_free_resources(adapter);
+ }
+
+ sema_init(&raid_dev->sysfs_sem, 1);
+
+ init_waitqueue_head(&raid_dev->sysfs_wait_q);
+
+ return rval;
+}
+
+
+/**
+ * megaraid_sysfs_free_resources - free sysfs related resources
+ *
+ * Free packets allocated for sysfs FW commands
+ *
+ * @param adapter : controller's soft state
+ */
+static void
+megaraid_sysfs_free_resources(adapter_t *adapter)
+{
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+
+ if (raid_dev->sysfs_uioc) kfree(raid_dev->sysfs_uioc);
+
+ if (raid_dev->sysfs_mbox64) kfree(raid_dev->sysfs_mbox64);
+
+ if (raid_dev->sysfs_buffer) {
+ pci_free_consistent(adapter->pdev, PAGE_SIZE,
+ raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma);
+ }
+}
+
+
+/**
+ * megaraid_sysfs_get_ldmap_done - callback for get ldmap
+ *
+ * Callback routine called in the ISR/tasklet context for get ldmap call
+ *
+ * @param uioc : completed packet
+ */
+static void
+megaraid_sysfs_get_ldmap_done(uioc_t *uioc)
+{
+ adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+
+ uioc->status = 0;
+
+ wake_up(&raid_dev->sysfs_wait_q);
+}
+
+
+/**
+ * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
+ *
+ * Timeout routine to recover and return to application, in case the
adapter
+ * has stopped responding. A timeout of 60 seconds for this command seem
like
+ * a good value
+ *
+ * @param uioc : timed out packet
+ */
+static void
+megaraid_sysfs_get_ldmap_timeout(unsigned long data)
+{
+ uioc_t *uioc = (uioc_t *)data;
+ adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+
+ uioc->status = -ETIME;
+
+ wake_up(&raid_dev->sysfs_wait_q);
+}
+
+
+/**
+ * megaraid_sysfs_get_ldmap - get update logical drive map
+ *
+ * This routine will be called whenever user reads the logical drive
+ * attributes, go get the current logical drive mapping table from the
+ * firmware. We use the managment API's to issue commands to the
controller.
+ *
+ * NOTE: The commands issuance functionality is not generalized and
+ * implemented in context of "get ld map" command only. If required, the
+ * command issuance logical can be trivially pulled out and implemented as
a
+ * standalone libary. For now, this should suffice since there is no other
+ * user of this interface.
+ *
+ * @param adapter : controller's soft state
+ *
+ * @return 0 on success
+ * @return -1 on failure
+ */
+static int
+megaraid_sysfs_get_ldmap(adapter_t *adapter)
+{
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+ uioc_t *uioc;
+ mbox64_t *mbox64;
+ mbox_t *mbox;
+ char *raw_mbox;
+ struct timer_list sysfs_timer;
+ struct timer_list *timerp;
+ caddr_t ldmap;
+ int rval = 0;
+
+ /*
+ * Allow only one read at a time to go through the sysfs attributes
+ */
+ down(&raid_dev->sysfs_sem);
+
+ uioc = raid_dev->sysfs_uioc;
+ mbox64 = raid_dev->sysfs_mbox64;
+ ldmap = raid_dev->sysfs_buffer;
+
+ memset(uioc, sizeof(uioc_t), 0);
+ memset(mbox64, sizeof(mbox64_t), 0);
+ memset(ldmap, sizeof(raid_dev->curr_ldmap), 0);
+
+ mbox = &mbox64->mbox32;
+ raw_mbox = (char *)mbox;
+ uioc->cmdbuf = (uint64_t)(unsigned long)mbox64;
+ uioc->buf_vaddr = (caddr_t)adapter;
+ uioc->status = -ENODATA;
+ uioc->done = megaraid_sysfs_get_ldmap_done;
+
+ /*
+ * Prepare the mailbox packet to get the current logical drive
mapping
+ * table
+ */
+ mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma;
+
+ raw_mbox[0] = FC_DEL_LOGDRV;
+ raw_mbox[2] = OP_GET_LDID_MAP;
+
+ /*
+ * Setup a timer to recover from a non-responding controller
+ */
+ timerp = &sysfs_timer;
+ init_timer(timerp);
+
+ timerp->function = megaraid_sysfs_get_ldmap_timeout;
+ timerp->data = (unsigned long)uioc;
+ timerp->expires = jiffies + 60 * HZ;
+
+ add_timer(timerp);
+
+ /*
+ * Send the command to the firmware
+ */
+ rval = megaraid_mbox_mm_command(adapter, uioc);
+
+ if (rval == 0) { // command successfully issued
+ wait_event(raid_dev->sysfs_wait_q, (uioc->status !=
-ENODATA));
+
+ /*
+ * Check if the command timed out
+ */
+ if (uioc->status == -ETIME) {
+ con_log(CL_ANN, (KERN_NOTICE
+ "megaraid: sysfs get ld map timed out\n"));
+
+ rval = -ETIME;
+ }
+ else {
+ rval = mbox->status;
+ }
+
+ if (rval == 0) {
+ memcpy(raid_dev->curr_ldmap, ldmap,
+ sizeof(raid_dev->curr_ldmap));
+ }
+ else {
+ con_log(CL_ANN, (KERN_NOTICE
+ "megaraid: get ld map failed with %x\n",
rval));
+ }
+ }
+ else {
+ con_log(CL_ANN, (KERN_NOTICE
+ "megaraid: could not issue ldmap command:%x\n",
rval));
+ }
+
+
+ del_timer_sync(timerp);
+
+ up(&raid_dev->sysfs_sem);
+
+ return rval;
+}
+
+
+/**
+ * megaraid_sysfs_show_app_hndl - display application handle for this
adapter
+ *
+ * Display the handle used by the applications while executing management
+ * tasks on the adapter. We invoke a management module API to get the
adapter
+ * handle, since we do not interface with applications directly.
+ *
+ * @param cdev : class device object representation for the host
+ * @param buf : buffer to send data to
+ */
+static ssize_t
+megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost);
+ uint32_t app_hndl;
+
+ app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id);
+
+ return snprintf(buf, 8, "%u\n", app_hndl);
+}
+
+
+/**
+ * megaraid_sysfs_show_ldnum - display the logical drive number for this
device
+ *
+ * Display the logical drive number for the device in question, if it a
valid
+ * logical drive. For physical devices, "-1" is returned
+ * The logical drive number is displayed in following format
+ *
+ * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
+ * <int> <int> <int> <int>
+ *
+ * @param dev : device object representation for the scsi device
+ * @param buf : buffer to send data to
+ */
+static ssize_t
+megaraid_sysfs_show_ldnum(struct device *dev, char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host);
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+ int scsi_id = -1;
+ int logical_drv = -1;
+ int ldid_map = -1;
+ uint32_t app_hndl = 0;
+ int mapped_sdev_id;
+ int rval;
+ int i;
+
+ if (raid_dev->random_del_supported &&
+ MRAID_IS_LOGICAL_SDEV(adapter, sdev)) {
+
+ rval = megaraid_sysfs_get_ldmap(adapter);
+ if (rval == 0) {
+
+ for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) {
+
+ mapped_sdev_id = sdev->id;
+
+ if (sdev->id > adapter->init_id) {
+ mapped_sdev_id -= 1;
+ }
+
+ if (raid_dev->curr_ldmap[i] ==
mapped_sdev_id) {
+
+ scsi_id = sdev->id;
+
+ logical_drv = i;
+
+ ldid_map = raid_dev->curr_ldmap[i];
+
+ app_hndl =
mraid_mm_adapter_app_handle(
+ adapter->unique_id);
+
+ break;
+ }
+ }
+ }
+ else {
+ con_log(CL_ANN, (KERN_NOTICE
+ "megaraid: sysfs get ld map failed: %x\n",
+ rval));
+ }
+ }
+
+ return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv,
+ ldid_map, app_hndl);
+}
+
+
/*
* END: Mailbox Low Level Driver
*/
diff -Naur 2.20.4.1/drivers/scsi/megaraid/megaraid_mbox.h
2.20.4.5/drivers/scsi/megaraid/megaraid_mbox.h
--- 2.20.4.1/drivers/scsi/megaraid/megaraid_mbox.h 2005-02-03
14:23:54.695328856 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/megaraid_mbox.h 2005-02-03
14:24:23.775907936 -0500
@@ -21,8 +21,8 @@
#include "megaraid_ioctl.h"


-#define MEGARAID_VERSION "2.20.4.1"
-#define MEGARAID_EXT_VERSION "(Release Date: Thu Nov 4 17:44:59 EST
2004)"
+#define MEGARAID_VERSION "2.20.4.5"
+#define MEGARAID_EXT_VERSION "(Release Date: Thu Feb 03 12:27:22 EST
2005)"


/*
@@ -137,6 +137,9 @@
#define PCI_SUBSYS_ID_PERC3_DC 0x0493
#define PCI_SUBSYS_ID_PERC3_SC 0x0475

+#define PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E 0x0408
+#define PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E 0x8287
+
#ifndef PCI_SUBSYS_ID_FSC
#define PCI_SUBSYS_ID_FSC 0x1734
#endif
@@ -216,6 +219,14 @@
* @param hw_error : set if FW not responding
* @param fast_load : If set, skip physical device scanning
* @channel_class : channel class, RAID or SCSI
+ * @sysfs_sem : semaphore to serialize access to sysfs
res.
+ * @sysfs_uioc : management packet to issue FW calls from
sysfs
+ * @sysfs_mbox64 : mailbox packet to issue FW calls from
sysfs
+ * @sysfs_buffer : data buffer for FW commands issued from
sysfs
+ * @sysfs_buffer_dma : DMA buffer for FW commands issued from
sysfs
+ * @sysfs_wait_q : wait queue for sysfs operations
+ * @random_del_supported : set if the random deletion is supported
+ * @curr_ldmap : current LDID map
*
* Initialization structure for mailbox controllers: memory based and IO
based
* All the fields in this structure are LLD specific and may be discovered
at
@@ -223,6 +234,7 @@
*
* NOTE: The fields of this structures are placed to minimize cache misses
*/
+#define MAX_LD_EXTENDED64 64
typedef struct {
mbox64_t *una_mbox64;
dma_addr_t una_mbox64_dma;
@@ -247,6 +259,14 @@
int hw_error;
int fast_load;
uint8_t channel_class;
+ struct semaphore sysfs_sem;
+ uioc_t *sysfs_uioc;
+ mbox64_t *sysfs_mbox64;
+ caddr_t sysfs_buffer;
+ dma_addr_t sysfs_buffer_dma;
+ wait_queue_head_t sysfs_wait_q;
+ int random_del_supported;
+ uint16_t curr_ldmap[MAX_LD_EXTENDED64];
} mraid_device_t;

// route to raid device from adapter
diff -Naur 2.20.4.1/drivers/scsi/megaraid/megaraid_mm.c
2.20.4.5/drivers/scsi/megaraid/megaraid_mm.c
--- 2.20.4.1/drivers/scsi/megaraid/megaraid_mm.c 2005-02-03
14:23:54.695328856 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/megaraid_mm.c 2005-02-03
14:24:23.776907784 -0500
@@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mm.c
- * Version : v2.20.2.3 (Dec 09 2004)
+ * Version : v2.20.2.5 (Jan 21 2005)
*
* Common management module
*/
@@ -58,6 +58,7 @@

EXPORT_SYMBOL(mraid_mm_register_adp);
EXPORT_SYMBOL(mraid_mm_unregister_adp);
+EXPORT_SYMBOL(mraid_mm_adapter_app_handle);

static int majorno;
static uint32_t drvr_ver = 0x02200201;
@@ -65,7 +66,7 @@
static int adapters_count_g;
static struct list_head adapters_list_g;

-wait_queue_head_t wait_q;
+static wait_queue_head_t wait_q;

static struct file_operations lsi_fops = {
.open = mraid_mm_open,
@@ -1007,6 +1008,40 @@
return rval;
}

+
+/**
+ * mraid_mm_adapter_app_handle - return the application handle for this
adapter
+ *
+ * For the given driver data, locate the adadpter in our global list and
+ * return the corresponding handle, which is also used by applications to
+ * uniquely identify an adapter.
+ *
+ * @param unique_id : adapter unique identifier
+ *
+ * @return adapter handle if found in the list
+ * @return 0 if adapter could not be located, should never happen though
+ */
+uint32_t
+mraid_mm_adapter_app_handle(uint32_t unique_id)
+{
+ mraid_mmadp_t *adapter;
+ mraid_mmadp_t *tmp;
+ int index = 0;
+
+ list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) {
+
+ if (adapter->unique_id == unique_id) {
+
+ return MKADAP(index);
+ }
+
+ index++;
+ }
+
+ return 0;
+}
+
+
/**
* mraid_mm_setup_dma_pools - Set up dma buffer pools per adapter
*
diff -Naur 2.20.4.1/drivers/scsi/megaraid/megaraid_mm.h
2.20.4.5/drivers/scsi/megaraid/megaraid_mm.h
--- 2.20.4.1/drivers/scsi/megaraid/megaraid_mm.h 2005-02-03
14:23:54.695328856 -0500
+++ 2.20.4.5/drivers/scsi/megaraid/megaraid_mm.h 2005-02-03
14:24:23.776907784 -0500
@@ -29,9 +29,10 @@
#include "megaraid_ioctl.h"


-#define LSI_COMMON_MOD_VERSION "2.20.2.3"
+#define LSI_COMMON_MOD_VERSION "2.20.2.5"
#define LSI_COMMON_MOD_EXT_VERSION \
- "(Release Date: Thu Dec 9 19:02:14 EST 2004)"
+ "(Release Date: Fri Jan 21 00:01:03 EST 2005)"
+

#define LSI_DBGLVL dbglevel


Attachment: megaraid_2.20.4.5.patch
Description: Binary data