megaraid_mbox 2.20.4.3 patch

From: 	Ju, Seokmann <sju@lsil.com>

- sysfs support for drive addition/removal
- Tape drive timeout issue
- Made some code static
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Documentation/scsi/ChangeLog.megaraid

+Release Date	: Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
+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@lsil.com>
+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@lsil.com>
+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@lsil.com>
+
+	"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@dell.com>, 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@SteelEye.com>, 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@SteelEye.com>, 01.06.2005
+		 linux-scsi mailing list
+
+2.	Add AMI megaraid support - Brian King <brking@charter.net>
+		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@stusta.de>
+	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@stusta.de>
+
+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@lsil.com>
+
+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@us.ibm.com)
+	
+	"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@dell.com)
+
 Release Date	: Thu Dec  9 19:02:14 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
 
 Current Version	: 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)

drivers/scsi/megaraid/Kconfig.megaraid

@@ -59,6 +59,7 @@ config MEGARAID_MAILBOX
 	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

drivers/scsi/megaraid/mega_common.h

@@ -221,6 +221,9 @@ typedef struct {
 #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		\

drivers/scsi/megaraid/megaraid_ioctl.h

@@ -291,5 +291,6 @@ typedef struct mraid_mmadp {
 
 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_ */

drivers/scsi/megaraid/megaraid_mbox.h

@@ -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 @@ typedef struct {
  * @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 @@ typedef struct {
  *
  * 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 @@ typedef struct {
 	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

drivers/scsi/megaraid/megaraid_mm.c

@@ -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 @@ MODULE_PARM_DESC(dlevel, "Debug level (default=0)");
 
 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 uint32_t drvr_ver	= 0x02200201;
 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 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
 	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
  *

drivers/scsi/megaraid/megaraid_mm.h

@@ -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