linux/drivers/scsi/megaraid/megaraid_sas_fp.c

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/*
* Linux MegaRAID driver for SAS based RAID controllers
*
* Copyright (c) 2009-2013 LSI Corporation
* Copyright (c) 2013-2014 Avago Technologies
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* FILE: megaraid_sas_fp.c
*
* Authors: Avago Technologies
* Sumant Patro
* Varad Talamacki
* Manoj Jose
* Kashyap Desai <kashyap.desai@avagotech.com>
* Sumit Saxena <sumit.saxena@avagotech.com>
*
* Send feedback to: megaraidlinux.pdl@avagotech.com
*
* Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
* San Jose, California 95131
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/list.h>
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/uio.h>
#include <linux/uaccess.h>
#include <linux/fs.h>
#include <linux/compat.h>
#include <linux/blkdev.h>
#include <linux/poll.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include "megaraid_sas_fusion.h"
#include "megaraid_sas.h"
#include <asm/div64.h>
#define LB_PENDING_CMDS_DEFAULT 4
static unsigned int lb_pending_cmds = LB_PENDING_CMDS_DEFAULT;
module_param(lb_pending_cmds, int, S_IRUGO);
MODULE_PARM_DESC(lb_pending_cmds, "Change raid-1 load balancing outstanding "
"threshold. Valid Values are 1-128. Default: 4");
#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a)))
#define MR_LD_STATE_OPTIMAL 3
#ifdef FALSE
#undef FALSE
#endif
#define FALSE 0
#ifdef TRUE
#undef TRUE
#endif
#define TRUE 1
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
#define SPAN_DEBUG 0
#define SPAN_ROW_SIZE(map, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowSize)
#define SPAN_ROW_DATA_SIZE(map_, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowDataSize)
#define SPAN_INVALID 0xff
/* Prototypes */
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
static void mr_update_span_set(struct MR_DRV_RAID_MAP_ALL *map,
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
PLD_SPAN_INFO ldSpanInfo);
static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct RAID_CONTEXT *pRAID_Context, struct MR_DRV_RAID_MAP_ALL *map);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
static u64 get_row_from_strip(struct megasas_instance *instance, u32 ld,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u64 strip, struct MR_DRV_RAID_MAP_ALL *map);
u32 mega_mod64(u64 dividend, u32 divisor)
{
u64 d;
u32 remainder;
if (!divisor)
printk(KERN_ERR "megasas : DIVISOR is zero, in div fn\n");
d = dividend;
remainder = do_div(d, divisor);
return remainder;
}
/**
* @param dividend : Dividend
* @param divisor : Divisor
*
* @return quotient
**/
u64 mega_div64_32(uint64_t dividend, uint32_t divisor)
{
u32 remainder;
u64 d;
if (!divisor)
printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n");
d = dividend;
remainder = do_div(d, divisor);
return d;
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_DRV_RAID_MAP_ALL *map)
{
return &map->raidMap.ldSpanMap[ld].ldRaid;
}
static struct MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(u32 ld,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL
*map)
{
return &map->raidMap.ldSpanMap[ld].spanBlock[0];
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_DRV_RAID_MAP_ALL *map)
{
return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx];
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_DRV_RAID_MAP_ALL *map)
{
return le16_to_cpu(map->raidMap.arMapInfo[ar].pd[arm]);
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_DRV_RAID_MAP_ALL *map)
{
return le16_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef);
}
__le16 MR_PdDevHandleGet(u32 pd, struct MR_DRV_RAID_MAP_ALL *map)
{
return map->raidMap.devHndlInfo[pd].curDevHdl;
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u16 MR_GetLDTgtId(u32 ld, struct MR_DRV_RAID_MAP_ALL *map)
{
return le16_to_cpu(map->raidMap.ldSpanMap[ld].ldRaid.targetId);
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u8 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_DRV_RAID_MAP_ALL *map)
{
return map->raidMap.ldTgtIdToLd[ldTgtId];
}
static struct MR_LD_SPAN *MR_LdSpanPtrGet(u32 ld, u32 span,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map)
{
return &map->raidMap.ldSpanMap[ld].spanBlock[span].span;
}
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
/*
* This function will Populate Driver Map using firmware raid map
*/
void MR_PopulateDrvRaidMap(struct megasas_instance *instance)
{
struct fusion_context *fusion = instance->ctrl_context;
struct MR_FW_RAID_MAP_ALL *fw_map_old = NULL;
struct MR_FW_RAID_MAP *pFwRaidMap = NULL;
int i;
u16 ld_count;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *drv_map =
fusion->ld_drv_map[(instance->map_id & 1)];
struct MR_DRV_RAID_MAP *pDrvRaidMap = &drv_map->raidMap;
if (instance->supportmax256vd) {
memcpy(fusion->ld_drv_map[instance->map_id & 1],
fusion->ld_map[instance->map_id & 1],
fusion->current_map_sz);
/* New Raid map will not set totalSize, so keep expected value
* for legacy code in ValidateMapInfo
*/
pDrvRaidMap->totalSize =
cpu_to_le32(sizeof(struct MR_FW_RAID_MAP_EXT));
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
} else {
fw_map_old = (struct MR_FW_RAID_MAP_ALL *)
fusion->ld_map[(instance->map_id & 1)];
pFwRaidMap = &fw_map_old->raidMap;
ld_count = (u16)le32_to_cpu(pFwRaidMap->ldCount);
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
#if VD_EXT_DEBUG
for (i = 0; i < ld_count; i++) {
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
dev_dbg(&instance->pdev->dev, "(%d) :Index 0x%x "
"Target Id 0x%x Seq Num 0x%x Size 0/%llx\n",
instance->unique_id, i,
fw_map_old->raidMap.ldSpanMap[i].ldRaid.targetId,
fw_map_old->raidMap.ldSpanMap[i].ldRaid.seqNum,
fw_map_old->raidMap.ldSpanMap[i].ldRaid.size);
}
#endif
memset(drv_map, 0, fusion->drv_map_sz);
pDrvRaidMap->totalSize = pFwRaidMap->totalSize;
pDrvRaidMap->ldCount = (__le16)cpu_to_le16(ld_count);
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
pDrvRaidMap->fpPdIoTimeoutSec = pFwRaidMap->fpPdIoTimeoutSec;
for (i = 0; i < MAX_RAIDMAP_LOGICAL_DRIVES + MAX_RAIDMAP_VIEWS; i++)
pDrvRaidMap->ldTgtIdToLd[i] =
(u8)pFwRaidMap->ldTgtIdToLd[i];
for (i = (MAX_RAIDMAP_LOGICAL_DRIVES + MAX_RAIDMAP_VIEWS);
i < MAX_LOGICAL_DRIVES_EXT; i++)
pDrvRaidMap->ldTgtIdToLd[i] = 0xff;
for (i = 0; i < ld_count; i++) {
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
pDrvRaidMap->ldSpanMap[i] = pFwRaidMap->ldSpanMap[i];
#if VD_EXT_DEBUG
dev_dbg(&instance->pdev->dev,
"pFwRaidMap->ldSpanMap[%d].ldRaid.targetId 0x%x "
"pFwRaidMap->ldSpanMap[%d].ldRaid.seqNum 0x%x "
"size 0x%x\n", i, i,
pFwRaidMap->ldSpanMap[i].ldRaid.targetId,
pFwRaidMap->ldSpanMap[i].ldRaid.seqNum,
(u32)pFwRaidMap->ldSpanMap[i].ldRaid.rowSize);
dev_dbg(&instance->pdev->dev,
"pDrvRaidMap->ldSpanMap[%d].ldRaid.targetId 0x%x "
"pDrvRaidMap->ldSpanMap[%d].ldRaid.seqNum 0x%x "
"size 0x%x\n", i, i,
pDrvRaidMap->ldSpanMap[i].ldRaid.targetId,
pDrvRaidMap->ldSpanMap[i].ldRaid.seqNum,
(u32)pDrvRaidMap->ldSpanMap[i].ldRaid.rowSize);
dev_dbg(&instance->pdev->dev, "Driver raid map all %p "
"raid map %p LD RAID MAP %p/%p\n", drv_map,
pDrvRaidMap, &pFwRaidMap->ldSpanMap[i].ldRaid,
&pDrvRaidMap->ldSpanMap[i].ldRaid);
#endif
}
memcpy(pDrvRaidMap->arMapInfo, pFwRaidMap->arMapInfo,
sizeof(struct MR_ARRAY_INFO) * MAX_RAIDMAP_ARRAYS);
memcpy(pDrvRaidMap->devHndlInfo, pFwRaidMap->devHndlInfo,
sizeof(struct MR_DEV_HANDLE_INFO) *
MAX_RAIDMAP_PHYSICAL_DEVICES);
}
}
/*
* This function will validate Map info data provided by FW
*/
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
u8 MR_ValidateMapInfo(struct megasas_instance *instance)
{
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct fusion_context *fusion;
struct MR_DRV_RAID_MAP_ALL *drv_map;
struct MR_DRV_RAID_MAP *pDrvRaidMap;
struct LD_LOAD_BALANCE_INFO *lbInfo;
PLD_SPAN_INFO ldSpanInfo;
struct MR_LD_RAID *raid;
u16 ldCount, num_lds;
u16 ld;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u32 expected_size;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
MR_PopulateDrvRaidMap(instance);
fusion = instance->ctrl_context;
drv_map = fusion->ld_drv_map[(instance->map_id & 1)];
pDrvRaidMap = &drv_map->raidMap;
lbInfo = fusion->load_balance_info;
ldSpanInfo = fusion->log_to_span;
if (instance->supportmax256vd)
expected_size = sizeof(struct MR_FW_RAID_MAP_EXT);
else
expected_size =
(sizeof(struct MR_FW_RAID_MAP) - sizeof(struct MR_LD_SPAN_MAP) +
(sizeof(struct MR_LD_SPAN_MAP) * le16_to_cpu(pDrvRaidMap->ldCount)));
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
if (le32_to_cpu(pDrvRaidMap->totalSize) != expected_size) {
dev_err(&instance->pdev->dev, "map info structure size 0x%x is not matching with ld count\n",
(unsigned int) expected_size);
dev_err(&instance->pdev->dev, "megasas: span map %x, pDrvRaidMap->totalSize : %x\n",
(unsigned int)sizeof(struct MR_LD_SPAN_MAP),
le32_to_cpu(pDrvRaidMap->totalSize));
return 0;
}
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (instance->UnevenSpanSupport)
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
mr_update_span_set(drv_map, ldSpanInfo);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
mr_update_load_balance_params(drv_map, lbInfo);
num_lds = le16_to_cpu(drv_map->raidMap.ldCount);
/*Convert Raid capability values to CPU arch */
for (ldCount = 0; ldCount < num_lds; ldCount++) {
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
ld = MR_TargetIdToLdGet(ldCount, drv_map);
raid = MR_LdRaidGet(ld, drv_map);
le32_to_cpus((u32 *)&raid->capability);
}
return 1;
}
u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map)
{
struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map);
struct MR_QUAD_ELEMENT *quad;
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
u32 span, j;
for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) {
for (j = 0; j < le32_to_cpu(pSpanBlock->block_span_info.noElements); j++) {
quad = &pSpanBlock->block_span_info.quad[j];
if (le32_to_cpu(quad->diff) == 0)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
return SPAN_INVALID;
if (le64_to_cpu(quad->logStart) <= row && row <=
le64_to_cpu(quad->logEnd) && (mega_mod64(row - le64_to_cpu(quad->logStart),
le32_to_cpu(quad->diff))) == 0) {
if (span_blk != NULL) {
u64 blk, debugBlk;
blk = mega_div64_32((row-le64_to_cpu(quad->logStart)), le32_to_cpu(quad->diff));
debugBlk = blk;
blk = (blk + le64_to_cpu(quad->offsetInSpan)) << raid->stripeShift;
*span_blk = blk;
}
return span;
}
}
}
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
return SPAN_INVALID;
}
/*
******************************************************************************
*
* Function to print info about span set created in driver from FW raid map
*
* Inputs :
* map - LD map
* ldSpanInfo - ldSpanInfo per HBA instance
*/
#if SPAN_DEBUG
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
static int getSpanInfo(struct MR_DRV_RAID_MAP_ALL *map,
PLD_SPAN_INFO ldSpanInfo)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
u8 span;
u32 element;
struct MR_LD_RAID *raid;
LD_SPAN_SET *span_set;
struct MR_QUAD_ELEMENT *quad;
int ldCount;
u16 ld;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
ld = MR_TargetIdToLdGet(ldCount, map);
if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1))
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
continue;
raid = MR_LdRaidGet(ld, map);
dev_dbg(&instance->pdev->dev, "LD %x: span_depth=%x\n",
ld, raid->spanDepth);
for (span = 0; span < raid->spanDepth; span++)
dev_dbg(&instance->pdev->dev, "Span=%x,"
" number of quads=%x\n", span,
le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
for (element = 0; element < MAX_QUAD_DEPTH; element++) {
span_set = &(ldSpanInfo[ld].span_set[element]);
if (span_set->span_row_data_width == 0)
break;
dev_dbg(&instance->pdev->dev, "Span Set %x:"
"width=%x, diff=%x\n", element,
(unsigned int)span_set->span_row_data_width,
(unsigned int)span_set->diff);
dev_dbg(&instance->pdev->dev, "logical LBA"
"start=0x%08lx, end=0x%08lx\n",
(long unsigned int)span_set->log_start_lba,
(long unsigned int)span_set->log_end_lba);
dev_dbg(&instance->pdev->dev, "span row start=0x%08lx,"
" end=0x%08lx\n",
(long unsigned int)span_set->span_row_start,
(long unsigned int)span_set->span_row_end);
dev_dbg(&instance->pdev->dev, "data row start=0x%08lx,"
" end=0x%08lx\n",
(long unsigned int)span_set->data_row_start,
(long unsigned int)span_set->data_row_end);
dev_dbg(&instance->pdev->dev, "data strip start=0x%08lx,"
" end=0x%08lx\n",
(long unsigned int)span_set->data_strip_start,
(long unsigned int)span_set->data_strip_end);
for (span = 0; span < raid->spanDepth; span++) {
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) >=
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
element + 1) {
quad = &map->raidMap.ldSpanMap[ld].
spanBlock[span].block_span_info.
quad[element];
dev_dbg(&instance->pdev->dev, "Span=%x,"
"Quad=%x, diff=%x\n", span,
element, le32_to_cpu(quad->diff));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
dev_dbg(&instance->pdev->dev,
"offset_in_span=0x%08lx\n",
(long unsigned int)le64_to_cpu(quad->offsetInSpan));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
dev_dbg(&instance->pdev->dev,
"logical start=0x%08lx, end=0x%08lx\n",
(long unsigned int)le64_to_cpu(quad->logStart),
(long unsigned int)le64_to_cpu(quad->logEnd));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
}
}
}
}
return 0;
}
#endif
/*
******************************************************************************
*
* This routine calculates the Span block for given row using spanset.
*
* Inputs :
* instance - HBA instance
* ld - Logical drive number
* row - Row number
* map - LD map
*
* Outputs :
*
* span - Span number
* block - Absolute Block number in the physical disk
* div_error - Devide error code.
*/
u32 mr_spanset_get_span_block(struct megasas_instance *instance,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u32 ld, u64 row, u64 *span_blk, struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct fusion_context *fusion = instance->ctrl_context;
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
LD_SPAN_SET *span_set;
struct MR_QUAD_ELEMENT *quad;
u32 span, info;
PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
for (info = 0; info < MAX_QUAD_DEPTH; info++) {
span_set = &(ldSpanInfo[ld].span_set[info]);
if (span_set->span_row_data_width == 0)
break;
if (row > span_set->data_row_end)
continue;
for (span = 0; span < raid->spanDepth; span++)
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) >= info+1) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
quad = &map->raidMap.ldSpanMap[ld].
spanBlock[span].
block_span_info.quad[info];
if (le32_to_cpu(quad->diff) == 0)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
return SPAN_INVALID;
if (le64_to_cpu(quad->logStart) <= row &&
row <= le64_to_cpu(quad->logEnd) &&
(mega_mod64(row - le64_to_cpu(quad->logStart),
le32_to_cpu(quad->diff))) == 0) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (span_blk != NULL) {
u64 blk;
blk = mega_div64_32
((row - le64_to_cpu(quad->logStart)),
le32_to_cpu(quad->diff));
blk = (blk + le64_to_cpu(quad->offsetInSpan))
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
<< raid->stripeShift;
*span_blk = blk;
}
return span;
}
}
}
return SPAN_INVALID;
}
/*
******************************************************************************
*
* This routine calculates the row for given strip using spanset.
*
* Inputs :
* instance - HBA instance
* ld - Logical drive number
* Strip - Strip
* map - LD map
*
* Outputs :
*
* row - row associated with strip
*/
static u64 get_row_from_strip(struct megasas_instance *instance,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u32 ld, u64 strip, struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct fusion_context *fusion = instance->ctrl_context;
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
LD_SPAN_SET *span_set;
PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
u32 info, strip_offset, span, span_offset;
u64 span_set_Strip, span_set_Row, retval;
for (info = 0; info < MAX_QUAD_DEPTH; info++) {
span_set = &(ldSpanInfo[ld].span_set[info]);
if (span_set->span_row_data_width == 0)
break;
if (strip > span_set->data_strip_end)
continue;
span_set_Strip = strip - span_set->data_strip_start;
strip_offset = mega_mod64(span_set_Strip,
span_set->span_row_data_width);
span_set_Row = mega_div64_32(span_set_Strip,
span_set->span_row_data_width) * span_set->diff;
for (span = 0, span_offset = 0; span < raid->spanDepth; span++)
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) >= info+1) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (strip_offset >=
span_set->strip_offset[span])
span_offset++;
else
break;
}
#if SPAN_DEBUG
dev_info(&instance->pdev->dev, "Strip 0x%llx,"
"span_set_Strip 0x%llx, span_set_Row 0x%llx"
"data width 0x%llx span offset 0x%x\n", strip,
(unsigned long long)span_set_Strip,
(unsigned long long)span_set_Row,
(unsigned long long)span_set->span_row_data_width,
span_offset);
dev_info(&instance->pdev->dev, "For strip 0x%llx"
"row is 0x%llx\n", strip,
(unsigned long long) span_set->data_row_start +
(unsigned long long) span_set_Row + (span_offset - 1));
#endif
retval = (span_set->data_row_start + span_set_Row +
(span_offset - 1));
return retval;
}
return -1LLU;
}
/*
******************************************************************************
*
* This routine calculates the Start Strip for given row using spanset.
*
* Inputs :
* instance - HBA instance
* ld - Logical drive number
* row - Row number
* map - LD map
*
* Outputs :
*
* Strip - Start strip associated with row
*/
static u64 get_strip_from_row(struct megasas_instance *instance,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u32 ld, u64 row, struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct fusion_context *fusion = instance->ctrl_context;
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
LD_SPAN_SET *span_set;
struct MR_QUAD_ELEMENT *quad;
PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
u32 span, info;
u64 strip;
for (info = 0; info < MAX_QUAD_DEPTH; info++) {
span_set = &(ldSpanInfo[ld].span_set[info]);
if (span_set->span_row_data_width == 0)
break;
if (row > span_set->data_row_end)
continue;
for (span = 0; span < raid->spanDepth; span++)
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) >= info+1) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
quad = &map->raidMap.ldSpanMap[ld].
spanBlock[span].block_span_info.quad[info];
if (le64_to_cpu(quad->logStart) <= row &&
row <= le64_to_cpu(quad->logEnd) &&
mega_mod64((row - le64_to_cpu(quad->logStart)),
le32_to_cpu(quad->diff)) == 0) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
strip = mega_div64_32
(((row - span_set->data_row_start)
- le64_to_cpu(quad->logStart)),
le32_to_cpu(quad->diff));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
strip *= span_set->span_row_data_width;
strip += span_set->data_strip_start;
strip += span_set->strip_offset[span];
return strip;
}
}
}
dev_err(&instance->pdev->dev, "get_strip_from_row"
"returns invalid strip for ld=%x, row=%lx\n",
ld, (long unsigned int)row);
return -1;
}
/*
******************************************************************************
*
* This routine calculates the Physical Arm for given strip using spanset.
*
* Inputs :
* instance - HBA instance
* ld - Logical drive number
* strip - Strip
* map - LD map
*
* Outputs :
*
* Phys Arm - Phys Arm associated with strip
*/
static u32 get_arm_from_strip(struct megasas_instance *instance,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
u32 ld, u64 strip, struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct fusion_context *fusion = instance->ctrl_context;
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
LD_SPAN_SET *span_set;
PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span;
u32 info, strip_offset, span, span_offset, retval;
for (info = 0 ; info < MAX_QUAD_DEPTH; info++) {
span_set = &(ldSpanInfo[ld].span_set[info]);
if (span_set->span_row_data_width == 0)
break;
if (strip > span_set->data_strip_end)
continue;
strip_offset = (uint)mega_mod64
((strip - span_set->data_strip_start),
span_set->span_row_data_width);
for (span = 0, span_offset = 0; span < raid->spanDepth; span++)
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) >= info+1) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (strip_offset >=
span_set->strip_offset[span])
span_offset =
span_set->strip_offset[span];
else
break;
}
#if SPAN_DEBUG
dev_info(&instance->pdev->dev, "get_arm_from_strip:"
"for ld=0x%x strip=0x%lx arm is 0x%x\n", ld,
(long unsigned int)strip, (strip_offset - span_offset));
#endif
retval = (strip_offset - span_offset);
return retval;
}
dev_err(&instance->pdev->dev, "get_arm_from_strip"
"returns invalid arm for ld=%x strip=%lx\n",
ld, (long unsigned int)strip);
return -1;
}
/* This Function will return Phys arm */
u8 get_arm(struct megasas_instance *instance, u32 ld, u8 span, u64 stripe,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
/* Need to check correct default value */
u32 arm = 0;
switch (raid->level) {
case 0:
case 5:
case 6:
arm = mega_mod64(stripe, SPAN_ROW_SIZE(map, ld, span));
break;
case 1:
/* start with logical arm */
arm = get_arm_from_strip(instance, ld, stripe, map);
if (arm != -1U)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
arm *= 2;
break;
}
return arm;
}
/*
******************************************************************************
*
* This routine calculates the arm, span and block for the specified stripe and
* reference in stripe using spanset
*
* Inputs :
*
* ld - Logical drive number
* stripRow - Stripe number
* stripRef - Reference in stripe
*
* Outputs :
*
* span - Span number
* block - Absolute Block number in the physical disk
*/
static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info,
struct RAID_CONTEXT *pRAID_Context,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
u32 pd, arRef;
u8 physArm, span;
u64 row;
u8 retval = TRUE;
u64 *pdBlock = &io_info->pdBlock;
__le16 *pDevHandle = &io_info->devHandle;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
u32 logArm, rowMod, armQ, arm;
struct fusion_context *fusion;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
fusion = instance->ctrl_context;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/*Get row and span from io_info for Uneven Span IO.*/
row = io_info->start_row;
span = io_info->start_span;
if (raid->level == 6) {
logArm = get_arm_from_strip(instance, ld, stripRow, map);
if (logArm == -1U)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
return FALSE;
rowMod = mega_mod64(row, SPAN_ROW_SIZE(map, ld, span));
armQ = SPAN_ROW_SIZE(map, ld, span) - 1 - rowMod;
arm = armQ + 1 + logArm;
if (arm >= SPAN_ROW_SIZE(map, ld, span))
arm -= SPAN_ROW_SIZE(map, ld, span);
physArm = (u8)arm;
} else
/* Calculate the arm */
physArm = get_arm(instance, ld, span, stripRow, map);
if (physArm == 0xFF)
return FALSE;
arRef = MR_LdSpanArrayGet(ld, span, map);
pd = MR_ArPdGet(arRef, physArm, map);
if (pd != MR_PD_INVALID)
*pDevHandle = MR_PdDevHandleGet(pd, map);
else {
*pDevHandle = cpu_to_le16(MR_PD_INVALID);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if ((raid->level >= 5) &&
((fusion->adapter_type == THUNDERBOLT_SERIES) ||
((fusion->adapter_type == INVADER_SERIES) &&
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
(raid->regTypeReqOnRead != REGION_TYPE_UNUSED))))
pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
else if (raid->level == 1) {
pd = MR_ArPdGet(arRef, physArm + 1, map);
if (pd != MR_PD_INVALID)
*pDevHandle = MR_PdDevHandleGet(pd, map);
}
}
*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
physArm;
io_info->span_arm = pRAID_Context->spanArm;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
return retval;
}
/*
******************************************************************************
*
* This routine calculates the arm, span and block for the specified stripe and
* reference in stripe.
*
* Inputs :
*
* ld - Logical drive number
* stripRow - Stripe number
* stripRef - Reference in stripe
*
* Outputs :
*
* span - Span number
* block - Absolute Block number in the physical disk
*/
u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
u16 stripRef, struct IO_REQUEST_INFO *io_info,
struct RAID_CONTEXT *pRAID_Context,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map)
{
struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
u32 pd, arRef;
u8 physArm, span;
u64 row;
u8 retval = TRUE;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
u64 *pdBlock = &io_info->pdBlock;
__le16 *pDevHandle = &io_info->devHandle;
struct fusion_context *fusion;
fusion = instance->ctrl_context;
row = mega_div64_32(stripRow, raid->rowDataSize);
if (raid->level == 6) {
/* logical arm within row */
u32 logArm = mega_mod64(stripRow, raid->rowDataSize);
u32 rowMod, armQ, arm;
if (raid->rowSize == 0)
return FALSE;
/* get logical row mod */
rowMod = mega_mod64(row, raid->rowSize);
armQ = raid->rowSize-1-rowMod; /* index of Q drive */
arm = armQ+1+logArm; /* data always logically follows Q */
if (arm >= raid->rowSize) /* handle wrap condition */
arm -= raid->rowSize;
physArm = (u8)arm;
} else {
if (raid->modFactor == 0)
return FALSE;
physArm = MR_LdDataArmGet(ld, mega_mod64(stripRow,
raid->modFactor),
map);
}
if (raid->spanDepth == 1) {
span = 0;
*pdBlock = row << raid->stripeShift;
} else {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map);
if (span == SPAN_INVALID)
return FALSE;
}
/* Get the array on which this span is present */
arRef = MR_LdSpanArrayGet(ld, span, map);
pd = MR_ArPdGet(arRef, physArm, map); /* Get the pd */
if (pd != MR_PD_INVALID)
/* Get dev handle from Pd. */
*pDevHandle = MR_PdDevHandleGet(pd, map);
else {
/* set dev handle as invalid. */
*pDevHandle = cpu_to_le16(MR_PD_INVALID);
if ((raid->level >= 5) &&
((fusion->adapter_type == THUNDERBOLT_SERIES) ||
((fusion->adapter_type == INVADER_SERIES) &&
(raid->regTypeReqOnRead != REGION_TYPE_UNUSED))))
pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
else if (raid->level == 1) {
/* Get alternate Pd. */
pd = MR_ArPdGet(arRef, physArm + 1, map);
if (pd != MR_PD_INVALID)
/* Get dev handle from Pd */
*pDevHandle = MR_PdDevHandleGet(pd, map);
}
}
*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk);
pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
physArm;
io_info->span_arm = pRAID_Context->spanArm;
return retval;
}
/*
******************************************************************************
*
* MR_BuildRaidContext function
*
* This function will initiate command processing. The start/end row and strip
* information is calculated then the lock is acquired.
* This function will return 0 if region lock was acquired OR return num strips
*/
u8
MR_BuildRaidContext(struct megasas_instance *instance,
struct IO_REQUEST_INFO *io_info,
struct RAID_CONTEXT *pRAID_Context,
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
struct MR_DRV_RAID_MAP_ALL *map, u8 **raidLUN)
{
struct fusion_context *fusion;
struct MR_LD_RAID *raid;
u32 ld, stripSize, stripe_mask;
u64 endLba, endStrip, endRow, start_row, start_strip;
u64 regStart;
u32 regSize;
u8 num_strips, numRows;
u16 ref_in_start_stripe, ref_in_end_stripe;
u64 ldStartBlock;
u32 numBlocks, ldTgtId;
u8 isRead;
u8 retval = 0;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
u8 startlba_span = SPAN_INVALID;
u64 *pdBlock = &io_info->pdBlock;
ldStartBlock = io_info->ldStartBlock;
numBlocks = io_info->numBlocks;
ldTgtId = io_info->ldTgtId;
isRead = io_info->isRead;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
io_info->IoforUnevenSpan = 0;
io_info->start_span = SPAN_INVALID;
fusion = instance->ctrl_context;
ld = MR_TargetIdToLdGet(ldTgtId, map);
raid = MR_LdRaidGet(ld, map);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/*
* if rowDataSize @RAID map and spanRowDataSize @SPAN INFO are zero
* return FALSE
*/
if (raid->rowDataSize == 0) {
if (MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize == 0)
return FALSE;
else if (instance->UnevenSpanSupport) {
io_info->IoforUnevenSpan = 1;
} else {
dev_info(&instance->pdev->dev,
"raid->rowDataSize is 0, but has SPAN[0]"
"rowDataSize = 0x%0x,"
"but there is _NO_ UnevenSpanSupport\n",
MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize);
return FALSE;
}
}
stripSize = 1 << raid->stripeShift;
stripe_mask = stripSize-1;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/*
* calculate starting row and stripe, and number of strips and rows
*/
start_strip = ldStartBlock >> raid->stripeShift;
ref_in_start_stripe = (u16)(ldStartBlock & stripe_mask);
endLba = ldStartBlock + numBlocks - 1;
ref_in_end_stripe = (u16)(endLba & stripe_mask);
endStrip = endLba >> raid->stripeShift;
num_strips = (u8)(endStrip - start_strip + 1); /* End strip */
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (io_info->IoforUnevenSpan) {
start_row = get_row_from_strip(instance, ld, start_strip, map);
endRow = get_row_from_strip(instance, ld, endStrip, map);
if (start_row == -1ULL || endRow == -1ULL) {
dev_info(&instance->pdev->dev, "return from %s %d."
"Send IO w/o region lock.\n",
__func__, __LINE__);
return FALSE;
}
if (raid->spanDepth == 1) {
startlba_span = 0;
*pdBlock = start_row << raid->stripeShift;
} else
startlba_span = (u8)mr_spanset_get_span_block(instance,
ld, start_row, pdBlock, map);
if (startlba_span == SPAN_INVALID) {
dev_info(&instance->pdev->dev, "return from %s %d"
"for row 0x%llx,start strip %llx"
"endSrip %llx\n", __func__, __LINE__,
(unsigned long long)start_row,
(unsigned long long)start_strip,
(unsigned long long)endStrip);
return FALSE;
}
io_info->start_span = startlba_span;
io_info->start_row = start_row;
#if SPAN_DEBUG
dev_dbg(&instance->pdev->dev, "Check Span number from %s %d"
"for row 0x%llx, start strip 0x%llx end strip 0x%llx"
" span 0x%x\n", __func__, __LINE__,
(unsigned long long)start_row,
(unsigned long long)start_strip,
(unsigned long long)endStrip, startlba_span);
dev_dbg(&instance->pdev->dev, "start_row 0x%llx endRow 0x%llx"
"Start span 0x%x\n", (unsigned long long)start_row,
(unsigned long long)endRow, startlba_span);
#endif
} else {
start_row = mega_div64_32(start_strip, raid->rowDataSize);
endRow = mega_div64_32(endStrip, raid->rowDataSize);
}
numRows = (u8)(endRow - start_row + 1);
/*
* calculate region info.
*/
/* assume region is at the start of the first row */
regStart = start_row << raid->stripeShift;
/* assume this IO needs the full row - we'll adjust if not true */
regSize = stripSize;
io_info->do_fp_rlbypass = raid->capability.fpBypassRegionLock;
/* Check if we can send this I/O via FastPath */
if (raid->capability.fpCapable) {
if (isRead)
io_info->fpOkForIo = (raid->capability.fpReadCapable &&
((num_strips == 1) ||
raid->capability.
fpReadAcrossStripe));
else
io_info->fpOkForIo = (raid->capability.fpWriteCapable &&
((num_strips == 1) ||
raid->capability.
fpWriteAcrossStripe));
} else
io_info->fpOkForIo = FALSE;
if (numRows == 1) {
/* single-strip IOs can always lock only the data needed */
if (num_strips == 1) {
regStart += ref_in_start_stripe;
regSize = numBlocks;
}
/* multi-strip IOs always need to full stripe locked */
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
} else if (io_info->IoforUnevenSpan == 0) {
/*
* For Even span region lock optimization.
* If the start strip is the last in the start row
*/
if (start_strip == (start_row + 1) * raid->rowDataSize - 1) {
regStart += ref_in_start_stripe;
/* initialize count to sectors from startref to end
of strip */
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
regSize = stripSize - ref_in_start_stripe;
}
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/* add complete rows in the middle of the transfer */
if (numRows > 2)
regSize += (numRows-2) << raid->stripeShift;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/* if IO ends within first strip of last row*/
if (endStrip == endRow*raid->rowDataSize)
regSize += ref_in_end_stripe+1;
else
regSize += stripSize;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
} else {
/*
* For Uneven span region lock optimization.
* If the start strip is the last in the start row
*/
if (start_strip == (get_strip_from_row(instance, ld, start_row, map) +
SPAN_ROW_DATA_SIZE(map, ld, startlba_span) - 1)) {
regStart += ref_in_start_stripe;
/* initialize count to sectors from
* startRef to end of strip
*/
regSize = stripSize - ref_in_start_stripe;
}
/* Add complete rows in the middle of the transfer*/
if (numRows > 2)
/* Add complete rows in the middle of the transfer*/
regSize += (numRows-2) << raid->stripeShift;
/* if IO ends within first strip of last row */
if (endStrip == get_strip_from_row(instance, ld, endRow, map))
regSize += ref_in_end_stripe + 1;
else
regSize += stripSize;
}
pRAID_Context->timeoutValue =
cpu_to_le16(raid->fpIoTimeoutForLd ?
raid->fpIoTimeoutForLd :
map->raidMap.fpPdIoTimeoutSec);
if (fusion->adapter_type == INVADER_SERIES)
pRAID_Context->regLockFlags = (isRead) ?
raid->regTypeReqOnRead : raid->regTypeReqOnWrite;
else
pRAID_Context->regLockFlags = (isRead) ?
REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite;
pRAID_Context->VirtualDiskTgtId = raid->targetId;
pRAID_Context->regLockRowLBA = cpu_to_le64(regStart);
pRAID_Context->regLockLength = cpu_to_le32(regSize);
pRAID_Context->configSeqNum = raid->seqNum;
/* save pointer to raid->LUN array */
*raidLUN = raid->LUN;
/*Get Phy Params only if FP capable, or else leave it to MR firmware
to do the calculation.*/
if (io_info->fpOkForIo) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
retval = io_info->IoforUnevenSpan ?
mr_spanset_get_phy_params(instance, ld,
start_strip, ref_in_start_stripe,
io_info, pRAID_Context, map) :
MR_GetPhyParams(instance, ld, start_strip,
ref_in_start_stripe, io_info,
pRAID_Context, map);
/* If IO on an invalid Pd, then FP is not possible.*/
if (io_info->devHandle == cpu_to_le16(MR_PD_INVALID))
io_info->fpOkForIo = FALSE;
return retval;
} else if (isRead) {
uint stripIdx;
for (stripIdx = 0; stripIdx < num_strips; stripIdx++) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
retval = io_info->IoforUnevenSpan ?
mr_spanset_get_phy_params(instance, ld,
start_strip + stripIdx,
ref_in_start_stripe, io_info,
pRAID_Context, map) :
MR_GetPhyParams(instance, ld,
start_strip + stripIdx, ref_in_start_stripe,
io_info, pRAID_Context, map);
if (!retval)
return TRUE;
}
}
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
#if SPAN_DEBUG
/* Just for testing what arm we get for strip.*/
if (io_info->IoforUnevenSpan)
get_arm_from_strip(instance, ld, start_strip, map);
#endif
return TRUE;
}
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
/*
******************************************************************************
*
* This routine pepare spanset info from Valid Raid map and store it into
* local copy of ldSpanInfo per instance data structure.
*
* Inputs :
* map - LD map
* ldSpanInfo - ldSpanInfo per HBA instance
*
*/
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
void mr_update_span_set(struct MR_DRV_RAID_MAP_ALL *map,
PLD_SPAN_INFO ldSpanInfo)
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
{
u8 span, count;
u32 element, span_row_width;
u64 span_row;
struct MR_LD_RAID *raid;
LD_SPAN_SET *span_set, *span_set_prev;
struct MR_QUAD_ELEMENT *quad;
int ldCount;
u16 ld;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
ld = MR_TargetIdToLdGet(ldCount, map);
if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1))
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
continue;
raid = MR_LdRaidGet(ld, map);
for (element = 0; element < MAX_QUAD_DEPTH; element++) {
for (span = 0; span < raid->spanDepth; span++) {
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].
block_span_info.noElements) <
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
element + 1)
continue;
span_set = &(ldSpanInfo[ld].span_set[element]);
quad = &map->raidMap.ldSpanMap[ld].
spanBlock[span].block_span_info.
quad[element];
span_set->diff = le32_to_cpu(quad->diff);
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
for (count = 0, span_row_width = 0;
count < raid->spanDepth; count++) {
if (le32_to_cpu(map->raidMap.ldSpanMap[ld].
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
spanBlock[count].
block_span_info.
noElements) >= element + 1) {
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
span_set->strip_offset[count] =
span_row_width;
span_row_width +=
MR_LdSpanPtrGet
(ld, count, map)->spanRowDataSize;
}
}
span_set->span_row_data_width = span_row_width;
span_row = mega_div64_32(((le64_to_cpu(quad->logEnd) -
le64_to_cpu(quad->logStart)) + le32_to_cpu(quad->diff)),
le32_to_cpu(quad->diff));
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
if (element == 0) {
span_set->log_start_lba = 0;
span_set->log_end_lba =
((span_row << raid->stripeShift)
* span_row_width) - 1;
span_set->span_row_start = 0;
span_set->span_row_end = span_row - 1;
span_set->data_strip_start = 0;
span_set->data_strip_end =
(span_row * span_row_width) - 1;
span_set->data_row_start = 0;
span_set->data_row_end =
(span_row * le32_to_cpu(quad->diff)) - 1;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
} else {
span_set_prev = &(ldSpanInfo[ld].
span_set[element - 1]);
span_set->log_start_lba =
span_set_prev->log_end_lba + 1;
span_set->log_end_lba =
span_set->log_start_lba +
((span_row << raid->stripeShift)
* span_row_width) - 1;
span_set->span_row_start =
span_set_prev->span_row_end + 1;
span_set->span_row_end =
span_set->span_row_start + span_row - 1;
span_set->data_strip_start =
span_set_prev->data_strip_end + 1;
span_set->data_strip_end =
span_set->data_strip_start +
(span_row * span_row_width) - 1;
span_set->data_row_start =
span_set_prev->data_row_end + 1;
span_set->data_row_end =
span_set->data_row_start +
(span_row * le32_to_cpu(quad->diff)) - 1;
[SCSI] megaraid_sas: Add support for Uneven Span PRL11 MegaRAID older Firmware does not support uneven span configuration for PRL11. E.g User wants to create 34 Driver PRL11 config, it was not possible using old firmware, since it was not supported configuration in old firmware Old Firmware expect even number of Drives in each span and same number of physical drives at each span. Considering above design, 17 Drives at Span-0 and 17 drives at span-1 was not possible. Now, using this new feature Firmware and Driver both required changes. New Firmware can allow user to create 16 Drives at span-0 and 18 Drives at span-1. This will allow user to create 34 Drives Uneven span PRL11. RAID map is interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. Since legacy RAID map consider Even Span design, there was no place to keep Uneven span information in existing Raid map. Because of this limitation, for Uneven span VD, driver can not use RAID map. This patch address the changes required in Driver to support Uneven span PRL11 support. 1. Driver will find if Firmware has UnevenSpanSupport or not by reading Controller Info. 2. If Firmware has UnvenSpan PRL11 support, then Driver will inform about its capability of handling UnevenSpan PRL11 to the firmware. 3. Driver will update its copy of span info on each time Raid map update is called. 4. Follow different IO path if it is Uneven Span. (For Uneven Span, Driver uses Span Set info to find relavent fields for that particular Virtual Disk) More verbose prints will be available by setting "SPAN_DEBUG" to 1 at compilation time. Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-05-22 09:05:04 +02:00
}
break;
}
if (span == raid->spanDepth)
break;
}
}
#if SPAN_DEBUG
getSpanInfo(map, ldSpanInfo);
#endif
}
void mr_update_load_balance_params(struct MR_DRV_RAID_MAP_ALL *drv_map,
struct LD_LOAD_BALANCE_INFO *lbInfo)
{
int ldCount;
u16 ld;
struct MR_LD_RAID *raid;
if (lb_pending_cmds > 128 || lb_pending_cmds < 1)
lb_pending_cmds = LB_PENDING_CMDS_DEFAULT;
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) {
ld = MR_TargetIdToLdGet(ldCount, drv_map);
megaraid_sas : Extended VD support Resending the patch. Addressed the review comments from Tomas Henzl. reserved1 field(part of union) of Raid map struct was not required so it is removed. Current MegaRAID firmware and hence the driver only supported 64VDs. E.g: If the user wants to create more than 64VD on a controller, it is not possible on current firmware/driver. New feature and requirement to support upto 256VD, firmware/driver/apps need changes. In addition to that there must be a backward compatibility of the new driver with the older firmware and vice versa. RAID map is the interface between Driver and FW to fetch all required fields(attributes) for each Virtual Drives. In the earlier design driver was using the FW copy of RAID map where as in the new design the Driver will keep the RAID map copy of its own; on which it will operate for any raid map access in fast path. Local driver raid map copy will provide ease of access through out the code and provide generic interface for future FW raid map changes. For the backward compatibility driver will notify FW that it supports 256VD to the FW in driver capability field. Based on the controller properly returned by the FW, the Driver will know whether it supports 256VD or not and will copy the RAID map accordingly. At any given time, driver will always have old or new Raid map. So with this changes, driver can also work in host lock less mode. Please see next patch which enable host lock less mode for megaraid_sas driver. Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-12 15:27:33 +02:00
if (ld >= MAX_LOGICAL_DRIVES_EXT) {
lbInfo[ldCount].loadBalanceFlag = 0;
continue;
}
raid = MR_LdRaidGet(ld, drv_map);
if ((raid->level != 1) ||
(raid->ldState != MR_LD_STATE_OPTIMAL)) {
lbInfo[ldCount].loadBalanceFlag = 0;
continue;
}
lbInfo[ldCount].loadBalanceFlag = 1;
}
}
u8 megasas_get_best_arm_pd(struct megasas_instance *instance,
struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *io_info)
{
struct fusion_context *fusion;
struct MR_LD_RAID *raid;
struct MR_DRV_RAID_MAP_ALL *drv_map;
u16 pend0, pend1, ld;
u64 diff0, diff1;
u8 bestArm, pd0, pd1, span, arm;
u32 arRef, span_row_size;
u64 block = io_info->ldStartBlock;
u32 count = io_info->numBlocks;
span = ((io_info->span_arm & RAID_CTX_SPANARM_SPAN_MASK)
>> RAID_CTX_SPANARM_SPAN_SHIFT);
arm = (io_info->span_arm & RAID_CTX_SPANARM_ARM_MASK);
fusion = instance->ctrl_context;
drv_map = fusion->ld_drv_map[(instance->map_id & 1)];
ld = MR_TargetIdToLdGet(io_info->ldTgtId, drv_map);
raid = MR_LdRaidGet(ld, drv_map);
span_row_size = instance->UnevenSpanSupport ?
SPAN_ROW_SIZE(drv_map, ld, span) : raid->rowSize;
arRef = MR_LdSpanArrayGet(ld, span, drv_map);
pd0 = MR_ArPdGet(arRef, arm, drv_map);
pd1 = MR_ArPdGet(arRef, (arm + 1) >= span_row_size ?
(arm + 1 - span_row_size) : arm + 1, drv_map);
/* get the pending cmds for the data and mirror arms */
pend0 = atomic_read(&lbInfo->scsi_pending_cmds[pd0]);
pend1 = atomic_read(&lbInfo->scsi_pending_cmds[pd1]);
/* Determine the disk whose head is nearer to the req. block */
diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[pd0]);
diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[pd1]);
bestArm = (diff0 <= diff1 ? arm : arm ^ 1);
if ((bestArm == arm && pend0 > pend1 + lb_pending_cmds) ||
(bestArm != arm && pend1 > pend0 + lb_pending_cmds))
bestArm ^= 1;
/* Update the last accessed block on the correct pd */
io_info->pd_after_lb = (bestArm == arm) ? pd0 : pd1;
lbInfo->last_accessed_block[io_info->pd_after_lb] = block + count - 1;
io_info->span_arm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | bestArm;
#if SPAN_DEBUG
if (arm != bestArm)
dev_dbg(&instance->pdev->dev, "LSI Debug R1 Load balance "
"occur - span 0x%x arm 0x%x bestArm 0x%x "
"io_info->span_arm 0x%x\n",
span, arm, bestArm, io_info->span_arm);
#endif
return io_info->pd_after_lb;
}
__le16 get_updated_dev_handle(struct megasas_instance *instance,
struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *io_info)
{
u8 arm_pd;
__le16 devHandle;
struct fusion_context *fusion;
struct MR_DRV_RAID_MAP_ALL *drv_map;
fusion = instance->ctrl_context;
drv_map = fusion->ld_drv_map[(instance->map_id & 1)];
/* get best new arm (PD ID) */
arm_pd = megasas_get_best_arm_pd(instance, lbInfo, io_info);
devHandle = MR_PdDevHandleGet(arm_pd, drv_map);
atomic_inc(&lbInfo->scsi_pending_cmds[arm_pd]);
return devHandle;
}