[RELEASE] megaraid 2.20.4.1 Driver

From: Bagalkote, Sreenivas
Date: Fri Nov 05 2004 - 14:40:46 EST

Hello All,

We are releasing megaraid 2.20.4.1 driver. This version fixes two issues -

1. Handle IOCTL command timeouts properly
2. Replace incorrectly introduced pci_dma_sync_{sg,single}_for_cpu with
correct pci_dma_sync_{sg,single}_for_device.

The patch below is generated against 2.6.10-rc1. The same patch is attached
to this mail as well.

Thanks,
Sreenivas

---------------------

diff -Naur linux-2.6.10-rc1/Documentation/scsi/ChangeLog.megaraid
linux-2.6.10-rc1-new/Documentation/scsi/ChangeLog.megaraid
--- linux-2.6.10-rc1/Documentation/scsi/ChangeLog.megaraid 2004-11-04
16:32:54.818802920 -0500
+++ linux-2.6.10-rc1-new/Documentation/scsi/ChangeLog.megaraid 2004-11-04
18:25:35.973951104 -0500
@@ -1,3 +1,14 @@
+Release Date : Thu Nov 4 18:24:56 EST 2004 - Sreenivas Bagalkote
<sreenib@xxxxxxxx>
+
+Current Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
+Older Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
+
+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
+ pci_dma_sync_{sg,single}_for_device.
+
Release Date : Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote
<sreenib@xxxxxxxx>
Current Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
Older Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
diff -Naur linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_ioctl.h
linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_ioctl.h
--- linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_ioctl.h 2004-10-18
17:53:46.000000000 -0400
+++ linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_ioctl.h 2004-11-04
17:42:05.737767320 -0500
@@ -145,6 +145,8 @@
uint8_t pool_index;
uint8_t free_buf;

+ uint8_t timedout;
+
} __attribute__ ((aligned(1024),packed)) uioc_t;


@@ -247,6 +249,7 @@
* @pdev : pci dev; used for allocating dma'ble memory
* @issue_uioc : Driver supplied routine to issue uioc_t commands
* : issue_uioc(drvr_data, kioc, ISSUE/ABORT,
uioc_done)
+ * @quiescent : flag to indicate if ioctl can be issued to this
adp
* @list : attach with the global list of adapters
* @kioc_list : block of mem for @max_kioc number of kiocs
* @kioc_pool : pool of free kiocs
@@ -264,7 +267,7 @@
uint32_t unique_id;
uint32_t drvr_type;
unsigned long drvr_data;
- uint8_t timeout;
+ uint16_t timeout;
uint8_t max_kioc;

struct pci_dev *pdev;
@@ -272,6 +275,7 @@
int(*issue_uioc)(unsigned long, uioc_t *, uint32_t);

/* Maintained by common module */
+ uint32_t quiescent;

struct list_head list;
uioc_t *kioc_list;
diff -Naur linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mbox.c
linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mbox.c
--- linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mbox.c 2004-11-04
16:33:00.000000000 -0500
+++ linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mbox.c 2004-11-04
17:45:45.801312576 -0500
@@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mbox.c
- * Version : v2.20.4 (September 27 2004)
+ * Version : v2.20.4.1 (Nov 04 2004)
*
* Authors:
* Atul Mukker <Atul.Mukker@xxxxxxxx>
@@ -1553,12 +1553,12 @@

if (scb->dma_direction == PCI_DMA_TODEVICE) {
if (!scb->scp->use_sg) { // sg list not used
- pci_dma_sync_single_for_cpu(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_cpu(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);
}
}
@@ -3590,7 +3590,7 @@
adp.drvr_data = (unsigned long)adapter;
adp.pdev = adapter->pdev;
adp.issue_uioc = megaraid_mbox_mm_handler;
- adp.timeout = 30;
+ adp.timeout = 300;
adp.max_kioc = MBOX_MAX_USER_CMDS;

if ((rval = mraid_mm_register_adp(&adp)) != 0) {
diff -Naur linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mbox.h
linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mbox.h
--- linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mbox.h 2004-11-04
16:33:00.523935608 -0500
+++ linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mbox.h 2004-11-04
17:45:34.510029112 -0500
@@ -21,8 +21,8 @@
#include "megaraid_ioctl.h"


-#define MEGARAID_VERSION "2.20.4.0"
-#define MEGARAID_EXT_VERSION "(Release Date: Mon Sep 27 22:15:07 EDT
2004)"
+#define MEGARAID_VERSION "2.20.4.1"
+#define MEGARAID_EXT_VERSION "(Release Date: Thu Nov 4 17:44:59 EST
2004)"


/*
diff -Naur linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mm.c
linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mm.c
--- linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mm.c 2004-11-04
16:33:00.000000000 -0500
+++ linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mm.c 2004-11-04
17:57:36.924205464 -0500
@@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mm.c
- * Version : v2.20.2.1 (Oct 06 2004)
+ * Version : v2.20.2.2 (Nov 04 2004)
*
* Common management module
*/
@@ -156,6 +156,17 @@
}

/*
+ * Check if adapter can accept ioctl. We may have marked it offline
+ * if any previous kioc had timedout on this controller.
+ */
+ if (!adp->quiescent) {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid cmm: controller cannot accept cmds due to
"
+ "earlier errors\n" ));
+ return -EFAULT;
+ }
+
+ /*
* The following call will block till a kioc is available
*/
kioc = mraid_mm_alloc_kioc(adp);
@@ -171,10 +182,15 @@
kioc->done = ioctl_done;

/*
- * Issue the IOCTL to the low level driver
+ * Issue the IOCTL to the low level driver. After the IOCTL
completes
+ * release the kioc if and only if it was _not_ timedout. If it was
+ * timedout, that means that resources are still with low level
driver.
*/
if ((rval = lld_ioctl(adp, kioc))) {
- mraid_mm_dealloc_kioc(adp, kioc);
+
+ if (!kioc->timedout)
+ mraid_mm_dealloc_kioc(adp, kioc);
+
return rval;
}

@@ -581,6 +597,7 @@
kioc->user_data = NULL;
kioc->user_data_len = 0;
kioc->user_pthru = NULL;
+ kioc->timedout = 0;

return kioc;
}
@@ -667,6 +684,14 @@
del_timer_sync(tp);
}

+ /*
+ * If the command had timedout, we mark the controller offline
+ * before returning
+ */
+ if (kioc->timedout) {
+ adp->quiescent = 0;
+ }
+
return kioc->status;
}

@@ -679,6 +704,10 @@
static void
ioctl_done(uioc_t *kioc)
{
+ uint32_t adapno;
+ int iterator;
+ mraid_mmadp_t* adapter;
+
/*
* When the kioc returns from driver, make sure it still doesn't
* have ENODATA in status. Otherwise, driver will hang on wait_event
@@ -691,7 +720,32 @@
kioc->status = -EINVAL;
}

- wake_up(&wait_q);
+ /*
+ * Check if this kioc was timedout before. If so, nobody is waiting
+ * on this kioc. We don't have to wake up anybody. Instead, we just
+ * have to free the kioc
+ */
+ if (kioc->timedout) {
+ iterator = 0;
+ adapter = NULL;
+ adapno = kioc->adapno;
+
+ con_log(CL_ANN, ( KERN_WARNING "megaraid cmm: completed "
+ "ioctl that was timedout
before\n"));
+
+ list_for_each_entry(adapter, &adapters_list_g, list) {
+ if (iterator++ == adapno) break;
+ }
+
+ kioc->timedout = 0;
+
+ if (adapter) {
+ mraid_mm_dealloc_kioc( adapter, kioc );
+ }
+ }
+ else {
+ wake_up(&wait_q);
+ }
}


@@ -706,6 +760,7 @@
uioc_t *kioc = (uioc_t *)ptr;

kioc->status = -ETIME;
+ kioc->timedout = 1;

con_log(CL_ANN, (KERN_WARNING "megaraid cmm: ioctl timed out\n"));

@@ -850,6 +905,7 @@
adapter->issue_uioc = lld_adp->issue_uioc;
adapter->timeout = lld_adp->timeout;
adapter->max_kioc = lld_adp->max_kioc;
+ adapter->quiescent = 1;

/*
* Allocate single blocks of memory for all required kiocs,
diff -Naur linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mm.h
linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mm.h
--- linux-2.6.10-rc1/drivers/scsi/megaraid/megaraid_mm.h 2004-11-04
16:33:00.000000000 -0500
+++ linux-2.6.10-rc1-new/drivers/scsi/megaraid/megaraid_mm.h 2004-11-04
17:46:36.390621832 -0500
@@ -29,9 +29,9 @@
#include "megaraid_ioctl.h"


-#define LSI_COMMON_MOD_VERSION "2.20.2.1"
+#define LSI_COMMON_MOD_VERSION "2.20.2.2"
#define LSI_COMMON_MOD_EXT_VERSION \
- "(Release Date: Wed Oct 06 11:15:29 EDT 2004)"
+ "(Release Date: Thu Nov 4 17:46:29 EST 2004)"


#define LSI_DBGLVL dbglevel

---------------------

Attachment: mr2.20.4.0-to-2.20.4.1.patch
Description: Binary data