// SPDX-License-Identifier: GPL-2.0-or-later /* * Linux MegaRAID driver for SAS based RAID controllers * * Copyright (c) 2009-2013 LSI Corporation * Copyright (c) 2013-2016 Avago Technologies * Copyright (c) 2016-2018 Broadcom Inc. * * FILE: megaraid_sas_fp.c * * Authors: Broadcom Inc. * Sumant Patro * Varad Talamacki * Manoj Jose * Kashyap Desai <kashyap.desai@broadcom.com> * Sumit Saxena <sumit.saxena@broadcom.com> * * Send feedback to: megaraidlinux.pdl@broadcom.com */ #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 <linux/irq_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, 0444); 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 #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 */ static void mr_update_span_set(struct MR_DRV_RAID_MAP_ALL *map, <------>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, <------>struct RAID_CONTEXT *pRAID_Context, struct MR_DRV_RAID_MAP_ALL *map); static u64 get_row_from_strip(struct megasas_instance *instance, u32 ld, <------>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; } /** * mega_div64_32 - Do a 64-bit division * @dividend: Dividend * @divisor: Divisor * * @return quotient **/ static u64 mega_div64_32(uint64_t dividend, uint32_t divisor) { <------>u64 d = dividend; <------>if (!divisor) <------><------>printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n"); <------>do_div(d, divisor); <------>return d; } 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, <------><------><------><------><------><------> struct MR_DRV_RAID_MAP_ALL <------><------><------><------><------><------> *map) { <------>return &map->raidMap.ldSpanMap[ld].spanBlock[0]; } static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_DRV_RAID_MAP_ALL *map) { <------>return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx]; } u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_DRV_RAID_MAP_ALL *map) { <------>return le16_to_cpu(map->raidMap.arMapInfo[ar].pd[arm]); } 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; } static u8 MR_PdInterfaceTypeGet(u32 pd, struct MR_DRV_RAID_MAP_ALL *map) { <------>return map->raidMap.devHndlInfo[pd].interfaceType; } u16 MR_GetLDTgtId(u32 ld, struct MR_DRV_RAID_MAP_ALL *map) { <------>return le16_to_cpu(map->raidMap.ldSpanMap[ld].ldRaid.targetId); } u16 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, <------><------><------><------><------> struct MR_DRV_RAID_MAP_ALL *map) { <------>return &map->raidMap.ldSpanMap[ld].spanBlock[span].span; } /* * This function will Populate Driver Map using firmware raid map */ static int MR_PopulateDrvRaidMap(struct megasas_instance *instance, u64 map_id) { <------>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, j; <------>u16 ld_count; <------>struct MR_FW_RAID_MAP_DYNAMIC *fw_map_dyn; <------>struct MR_FW_RAID_MAP_EXT *fw_map_ext; <------>struct MR_RAID_MAP_DESC_TABLE *desc_table; <------>struct MR_DRV_RAID_MAP_ALL *drv_map = <------><------><------>fusion->ld_drv_map[(map_id & 1)]; <------>struct MR_DRV_RAID_MAP *pDrvRaidMap = &drv_map->raidMap; <------>void *raid_map_data = NULL; <------>memset(drv_map, 0, fusion->drv_map_sz); <------>memset(pDrvRaidMap->ldTgtIdToLd, <------> 0xff, (sizeof(u16) * MAX_LOGICAL_DRIVES_DYN)); <------>if (instance->max_raid_mapsize) { <------><------>fw_map_dyn = fusion->ld_map[(map_id & 1)]; <------><------>desc_table = <------><------>(struct MR_RAID_MAP_DESC_TABLE *)((void *)fw_map_dyn + le32_to_cpu(fw_map_dyn->desc_table_offset)); <------><------>if (desc_table != fw_map_dyn->raid_map_desc_table) <------><------><------>dev_dbg(&instance->pdev->dev, "offsets of desc table are not matching desc %p original %p\n", <------><------><------><------>desc_table, fw_map_dyn->raid_map_desc_table); <------><------>ld_count = (u16)le16_to_cpu(fw_map_dyn->ld_count); <------><------>pDrvRaidMap->ldCount = (__le16)cpu_to_le16(ld_count); <------><------>pDrvRaidMap->fpPdIoTimeoutSec = <------><------><------>fw_map_dyn->fp_pd_io_timeout_sec; <------><------>pDrvRaidMap->totalSize = <------><------><------>cpu_to_le32(sizeof(struct MR_DRV_RAID_MAP_ALL)); <------><------>/* point to actual data starting point*/ <------><------>raid_map_data = (void *)fw_map_dyn + <------><------><------>le32_to_cpu(fw_map_dyn->desc_table_offset) + <------><------><------>le32_to_cpu(fw_map_dyn->desc_table_size); <------><------>for (i = 0; i < le32_to_cpu(fw_map_dyn->desc_table_num_elements); ++i) { <------><------><------>switch (le32_to_cpu(desc_table->raid_map_desc_type)) { <------><------><------>case RAID_MAP_DESC_TYPE_DEVHDL_INFO: <------><------><------><------>fw_map_dyn->dev_hndl_info = <------><------><------><------>(struct MR_DEV_HANDLE_INFO *)(raid_map_data + le32_to_cpu(desc_table->raid_map_desc_offset)); <------><------><------><------>memcpy(pDrvRaidMap->devHndlInfo, <------><------><------><------><------>fw_map_dyn->dev_hndl_info, <------><------><------><------><------>sizeof(struct MR_DEV_HANDLE_INFO) * <------><------><------><------><------>le32_to_cpu(desc_table->raid_map_desc_elements)); <------><------><------>break; <------><------><------>case RAID_MAP_DESC_TYPE_TGTID_INFO: <------><------><------><------>fw_map_dyn->ld_tgt_id_to_ld = <------><------><------><------><------>(u16 *)(raid_map_data + <------><------><------><------><------>le32_to_cpu(desc_table->raid_map_desc_offset)); <------><------><------><------>for (j = 0; j < le32_to_cpu(desc_table->raid_map_desc_elements); j++) { <------><------><------><------><------>pDrvRaidMap->ldTgtIdToLd[j] = <------><------><------><------><------><------>le16_to_cpu(fw_map_dyn->ld_tgt_id_to_ld[j]); <------><------><------><------>} <------><------><------>break; <------><------><------>case RAID_MAP_DESC_TYPE_ARRAY_INFO: <------><------><------><------>fw_map_dyn->ar_map_info = <------><------><------><------><------>(struct MR_ARRAY_INFO *) <------><------><------><------><------>(raid_map_data + le32_to_cpu(desc_table->raid_map_desc_offset)); <------><------><------><------>memcpy(pDrvRaidMap->arMapInfo, <------><------><------><------> fw_map_dyn->ar_map_info, <------><------><------><------> sizeof(struct MR_ARRAY_INFO) * <------><------><------><------> le32_to_cpu(desc_table->raid_map_desc_elements)); <------><------><------>break; <------><------><------>case RAID_MAP_DESC_TYPE_SPAN_INFO: <------><------><------><------>fw_map_dyn->ld_span_map = <------><------><------><------><------>(struct MR_LD_SPAN_MAP *) <------><------><------><------><------>(raid_map_data + <------><------><------><------><------>le32_to_cpu(desc_table->raid_map_desc_offset)); <------><------><------><------>memcpy(pDrvRaidMap->ldSpanMap, <------><------><------><------> fw_map_dyn->ld_span_map, <------><------><------><------> sizeof(struct MR_LD_SPAN_MAP) * <------><------><------><------> le32_to_cpu(desc_table->raid_map_desc_elements)); <------><------><------>break; <------><------><------>default: <------><------><------><------>dev_dbg(&instance->pdev->dev, "wrong number of desctableElements %d\n", <------><------><------><------><------>fw_map_dyn->desc_table_num_elements); <------><------><------>} <------><------><------>++desc_table; <------><------>} <------>} else if (instance->supportmax256vd) { <------><------>fw_map_ext = <------><------><------>(struct MR_FW_RAID_MAP_EXT *)fusion->ld_map[(map_id & 1)]; <------><------>ld_count = (u16)le16_to_cpu(fw_map_ext->ldCount); <------><------>if (ld_count > MAX_LOGICAL_DRIVES_EXT) { <------><------><------>dev_dbg(&instance->pdev->dev, "megaraid_sas: LD count exposed in RAID map in not valid\n"); <------><------><------>return 1; <------><------>} <------><------>pDrvRaidMap->ldCount = (__le16)cpu_to_le16(ld_count); <------><------>pDrvRaidMap->fpPdIoTimeoutSec = fw_map_ext->fpPdIoTimeoutSec; <------><------>for (i = 0; i < (MAX_LOGICAL_DRIVES_EXT); i++) <------><------><------>pDrvRaidMap->ldTgtIdToLd[i] = <------><------><------><------>(u16)fw_map_ext->ldTgtIdToLd[i]; <------><------>memcpy(pDrvRaidMap->ldSpanMap, fw_map_ext->ldSpanMap, <------><------> sizeof(struct MR_LD_SPAN_MAP) * ld_count); <------><------>memcpy(pDrvRaidMap->arMapInfo, fw_map_ext->arMapInfo, <------><------> sizeof(struct MR_ARRAY_INFO) * MAX_API_ARRAYS_EXT); <------><------>memcpy(pDrvRaidMap->devHndlInfo, fw_map_ext->devHndlInfo, <------><------> sizeof(struct MR_DEV_HANDLE_INFO) * <------><------> MAX_RAIDMAP_PHYSICAL_DEVICES); <------><------>/* 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)); <------>} else { <------><------>fw_map_old = (struct MR_FW_RAID_MAP_ALL *) <------><------><------><------>fusion->ld_map[(map_id & 1)]; <------><------>pFwRaidMap = &fw_map_old->raidMap; <------><------>ld_count = (u16)le32_to_cpu(pFwRaidMap->ldCount); <------><------>if (ld_count > MAX_LOGICAL_DRIVES) { <------><------><------>dev_dbg(&instance->pdev->dev, <------><------><------><------>"LD count exposed in RAID map in not valid\n"); <------><------><------>return 1; <------><------>} <------><------>pDrvRaidMap->totalSize = pFwRaidMap->totalSize; <------><------>pDrvRaidMap->ldCount = (__le16)cpu_to_le16(ld_count); <------><------>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 = 0; i < ld_count; i++) { <------><------><------>pDrvRaidMap->ldSpanMap[i] = pFwRaidMap->ldSpanMap[i]; <------><------>} <------><------>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); <------>} <------>return 0; } /* * This function will validate Map info data provided by FW */ u8 MR_ValidateMapInfo(struct megasas_instance *instance, u64 map_id) { <------>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 num_lds, i; <------>u16 ld; <------>u32 expected_size; <------>if (MR_PopulateDrvRaidMap(instance, map_id)) <------><------>return 0; <------>fusion = instance->ctrl_context; <------>drv_map = fusion->ld_drv_map[(map_id & 1)]; <------>pDrvRaidMap = &drv_map->raidMap; <------>lbInfo = fusion->load_balance_info; <------>ldSpanInfo = fusion->log_to_span; <------>if (instance->max_raid_mapsize) <------><------>expected_size = sizeof(struct MR_DRV_RAID_MAP_ALL); <------>else 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))); <------>if (le32_to_cpu(pDrvRaidMap->totalSize) != expected_size) { <------><------>dev_dbg(&instance->pdev->dev, "megasas: map info structure size 0x%x", <------><------><------>le32_to_cpu(pDrvRaidMap->totalSize)); <------><------>dev_dbg(&instance->pdev->dev, "is not matching expected size 0x%x\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; <------>} <------>if (instance->UnevenSpanSupport) <------><------>mr_update_span_set(drv_map, ldSpanInfo); <------>if (lbInfo) <------><------>mr_update_load_balance_params(drv_map, lbInfo); <------>num_lds = le16_to_cpu(drv_map->raidMap.ldCount); <------>memcpy(instance->ld_ids_prev, <------> instance->ld_ids_from_raidmap, <------> sizeof(instance->ld_ids_from_raidmap)); <------>memset(instance->ld_ids_from_raidmap, 0xff, MEGASAS_MAX_LD_IDS); <------>/*Convert Raid capability values to CPU arch */ <------>for (i = 0; (num_lds > 0) && (i < MAX_LOGICAL_DRIVES_EXT); i++) { <------><------>ld = MR_TargetIdToLdGet(i, drv_map); <------><------>/* For non existing VDs, iterate to next VD*/ <------><------>if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1)) <------><------><------>continue; <------><------>raid = MR_LdRaidGet(ld, drv_map); <------><------>le32_to_cpus((u32 *)&raid->capability); <------><------>instance->ld_ids_from_raidmap[i] = i; <------><------>num_lds--; <------>} <------>return 1; } static u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk, <------><------> 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) <------><------><------><------>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; <------><------><------><------><------>blk = mega_div64_32((row-le64_to_cpu(quad->logStart)), le32_to_cpu(quad->diff)); <------><------><------><------><------>blk = (blk + le64_to_cpu(quad->offsetInSpan)) << raid->stripeShift; <------><------><------><------><------>*span_blk = blk; <------><------><------><------>} <------><------><------><------>return span; <------><------><------>} <------><------>} <------>} <------>return SPAN_INVALID; } /* ****************************************************************************** * * 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. */ static u32 mr_spanset_get_span_block(struct megasas_instance *instance, <------><------>u32 ld, u64 row, u64 *span_blk, struct MR_DRV_RAID_MAP_ALL *map) { <------>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) { <------><------><------><------>quad = &map->raidMap.ldSpanMap[ld]. <------><------><------><------><------>spanBlock[span]. <------><------><------><------><------>block_span_info.quad[info]; <------><------><------><------>if (le32_to_cpu(quad->diff) == 0) <------><------><------><------><------>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; <------><------><------><------><------><------>blk = mega_div64_32 <------><------><------><------><------><------> ((row - le64_to_cpu(quad->logStart)), <------><------><------><------><------><------> le32_to_cpu(quad->diff)); <------><------><------><------><------><------>blk = (blk + le64_to_cpu(quad->offsetInSpan)) <------><------><------><------><------><------><------> << 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, <------>u32 ld, u64 strip, struct MR_DRV_RAID_MAP_ALL *map) { <------>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) { <------><------><------><------>if (strip_offset >= <------><------><------><------><------>span_set->strip_offset[span]) <------><------><------><------><------>span_offset++; <------><------><------><------>else <------><------><------><------><------>break; <------><------><------>} <------><------>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, <------><------>u32 ld, u64 row, struct MR_DRV_RAID_MAP_ALL *map) { <------>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) { <------><------><------><------>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) { <------><------><------><------><------>strip = mega_div64_32 <------><------><------><------><------><------>(((row - span_set->data_row_start) <------><------><------><------><------><------><------>- le64_to_cpu(quad->logStart)), <------><------><------><------><------><------><------>le32_to_cpu(quad->diff)); <------><------><------><------><------>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, <------>u32 ld, u64 strip, struct MR_DRV_RAID_MAP_ALL *map) { <------>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) { <------><------><------><------>if (strip_offset >= <------><------><------><------><------>span_set->strip_offset[span]) <------><------><------><------><------>span_offset = <------><------><------><------><------><------>span_set->strip_offset[span]; <------><------><------><------>else <------><------><------><------><------>break; <------><------><------>} <------><------>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 */ static u8 get_arm(struct megasas_instance *instance, u32 ld, u8 span, u64 stripe, <------><------>struct MR_DRV_RAID_MAP_ALL *map) { <------>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) <------><------><------>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, <------><------>struct MR_DRV_RAID_MAP_ALL *map) { <------>struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); <------>u32 pd, arRef, r1_alt_pd; <------>u8 physArm, span; <------>u64 row; <------>u8 retval = true; <------>u64 *pdBlock = &io_info->pdBlock; <------>__le16 *pDevHandle = &io_info->devHandle; <------>u8 *pPdInterface = &io_info->pd_interface; <------>u32 logArm, rowMod, armQ, arm; <------>*pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID); <------>/*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) <------><------><------>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); <------><------>*pPdInterface = MR_PdInterfaceTypeGet(pd, map); <------><------>/* get second pd also for raid 1/10 fast path writes*/ <------><------>if ((instance->adapter_type >= VENTURA_SERIES) && <------><------> (raid->level == 1) && <------><------> !io_info->isRead) { <------><------><------>r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map); <------><------><------>if (r1_alt_pd != MR_PD_INVALID) <------><------><------><------>io_info->r1_alt_dev_handle = <------><------><------><------>MR_PdDevHandleGet(r1_alt_pd, map); <------><------>} <------>} else { <------><------>if ((raid->level >= 5) && <------><------><------>((instance->adapter_type == THUNDERBOLT_SERIES) || <------><------><------>((instance->adapter_type == INVADER_SERIES) && <------><------><------>(raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))) <------><------><------>pRAID_Context->reg_lock_flags = REGION_TYPE_EXCLUSIVE; <------><------>else if (raid->level == 1) { <------><------><------>physArm = physArm + 1; <------><------><------>pd = MR_ArPdGet(arRef, physArm, map); <------><------><------>if (pd != MR_PD_INVALID) { <------><------><------><------>*pDevHandle = MR_PdDevHandleGet(pd, map); <------><------><------><------>*pPdInterface = MR_PdInterfaceTypeGet(pd, map); <------><------><------>} <------><------>} <------>} <------>*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk); <------>if (instance->adapter_type >= VENTURA_SERIES) { <------><------>((struct RAID_CONTEXT_G35 *)pRAID_Context)->span_arm = <------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------><------>io_info->span_arm = <------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------>} else { <------><------>pRAID_Context->span_arm = <------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------><------>io_info->span_arm = pRAID_Context->span_arm; <------>} <------>io_info->pd_after_lb = pd; <------>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 */ static u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, <------><------>u16 stripRef, struct IO_REQUEST_INFO *io_info, <------><------>struct RAID_CONTEXT *pRAID_Context, <------><------>struct MR_DRV_RAID_MAP_ALL *map) { <------>struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); <------>u32 pd, arRef, r1_alt_pd; <------>u8 physArm, span; <------>u64 row; <------>u8 retval = true; <------>u64 *pdBlock = &io_info->pdBlock; <------>__le16 *pDevHandle = &io_info->devHandle; <------>u8 *pPdInterface = &io_info->pd_interface; <------>*pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID); <------>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 { <------><------>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); <------><------>*pPdInterface = MR_PdInterfaceTypeGet(pd, map); <------><------>/* get second pd also for raid 1/10 fast path writes*/ <------><------>if ((instance->adapter_type >= VENTURA_SERIES) && <------><------> (raid->level == 1) && <------><------> !io_info->isRead) { <------><------><------>r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map); <------><------><------>if (r1_alt_pd != MR_PD_INVALID) <------><------><------><------>io_info->r1_alt_dev_handle = <------><------><------><------><------>MR_PdDevHandleGet(r1_alt_pd, map); <------><------>} <------>} else { <------><------>if ((raid->level >= 5) && <------><------><------>((instance->adapter_type == THUNDERBOLT_SERIES) || <------><------><------>((instance->adapter_type == INVADER_SERIES) && <------><------><------>(raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))) <------><------><------>pRAID_Context->reg_lock_flags = REGION_TYPE_EXCLUSIVE; <------><------>else if (raid->level == 1) { <------><------><------>/* Get alternate Pd. */ <------><------><------>physArm = physArm + 1; <------><------><------>pd = MR_ArPdGet(arRef, physArm, map); <------><------><------>if (pd != MR_PD_INVALID) { <------><------><------><------>/* Get dev handle from Pd */ <------><------><------><------>*pDevHandle = MR_PdDevHandleGet(pd, map); <------><------><------><------>*pPdInterface = MR_PdInterfaceTypeGet(pd, map); <------><------><------>} <------><------>} <------>} <------>*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk); <------>if (instance->adapter_type >= VENTURA_SERIES) { <------><------>((struct RAID_CONTEXT_G35 *)pRAID_Context)->span_arm = <------><------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------><------>io_info->span_arm = <------><------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------>} else { <------><------>pRAID_Context->span_arm = <------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm; <------><------>io_info->span_arm = pRAID_Context->span_arm; <------>} <------>io_info->pd_after_lb = pd; <------>return retval; } /* * mr_get_phy_params_r56_rmw - Calculate parameters for R56 CTIO write operation * @instance: Adapter soft state * @ld: LD index * @stripNo: Strip Number * @io_info: IO info structure pointer * pRAID_Context: RAID context pointer * map: RAID map pointer * * This routine calculates the logical arm, data Arm, row number and parity arm * for R56 CTIO write operation. */ static void mr_get_phy_params_r56_rmw(struct megasas_instance *instance, <------><------><------> u32 ld, u64 stripNo, <------><------><------> struct IO_REQUEST_INFO *io_info, <------><------><------> struct RAID_CONTEXT_G35 *pRAID_Context, <------><------><------> struct MR_DRV_RAID_MAP_ALL *map) { <------>struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); <------>u8 span, dataArms, arms, dataArm, logArm; <------>s8 rightmostParityArm, PParityArm; <------>u64 rowNum; <------>u64 *pdBlock = &io_info->pdBlock; <------>dataArms = raid->rowDataSize; <------>arms = raid->rowSize; <------>rowNum = mega_div64_32(stripNo, dataArms); <------>/* parity disk arm, first arm is 0 */ <------>rightmostParityArm = (arms - 1) - mega_mod64(rowNum, arms); <------>/* logical arm within row */ <------>logArm = mega_mod64(stripNo, dataArms); <------>/* physical arm for data */ <------>dataArm = mega_mod64((rightmostParityArm + 1 + logArm), arms); <------>if (raid->spanDepth == 1) { <------><------>span = 0; <------>} else { <------><------>span = (u8)MR_GetSpanBlock(ld, rowNum, pdBlock, map); <------><------>if (span == SPAN_INVALID) <------><------><------>return; <------>} <------>if (raid->level == 6) { <------><------>/* P Parity arm, note this can go negative adjust if negative */ <------><------>PParityArm = (arms - 2) - mega_mod64(rowNum, arms); <------><------>if (PParityArm < 0) <------><------><------>PParityArm += arms; <------><------>/* rightmostParityArm is P-Parity for RAID 5 and Q-Parity for RAID */ <------><------>pRAID_Context->flow_specific.r56_arm_map = rightmostParityArm; <------><------>pRAID_Context->flow_specific.r56_arm_map |= <------><------><------><------> (u16)(PParityArm << RAID_CTX_R56_P_ARM_SHIFT); <------>} else { <------><------>pRAID_Context->flow_specific.r56_arm_map |= <------><------><------><------> (u16)(rightmostParityArm << RAID_CTX_R56_P_ARM_SHIFT); <------>} <------>pRAID_Context->reg_lock_row_lba = cpu_to_le64(rowNum); <------>pRAID_Context->flow_specific.r56_arm_map |= <------><------><------><------> (u16)(logArm << RAID_CTX_R56_LOG_ARM_SHIFT); <------>cpu_to_le16s(&pRAID_Context->flow_specific.r56_arm_map); <------>pRAID_Context->span_arm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | dataArm; <------>pRAID_Context->raid_flags = (MR_RAID_FLAGS_IO_SUB_TYPE_R56_DIV_OFFLOAD << <------><------><------><------> MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); <------>return; } /* ****************************************************************************** * * 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, <------><------> struct MR_DRV_RAID_MAP_ALL *map, u8 **raidLUN) { <------>struct fusion_context *fusion; <------>struct MR_LD_RAID *raid; <------>u32 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; <------>u8 startlba_span = SPAN_INVALID; <------>u64 *pdBlock = &io_info->pdBlock; <------>u16 ld; <------>ldStartBlock = io_info->ldStartBlock; <------>numBlocks = io_info->numBlocks; <------>ldTgtId = io_info->ldTgtId; <------>isRead = io_info->isRead; <------>io_info->IoforUnevenSpan = 0; <------>io_info->start_span = SPAN_INVALID; <------>fusion = instance->ctrl_context; <------>ld = MR_TargetIdToLdGet(ldTgtId, map); <------>raid = MR_LdRaidGet(ld, map); <------>/*check read ahead bit*/ <------>io_info->ra_capable = raid->capability.ra_capable; <------>/* <------> * 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; <------>io_info->data_arms = raid->rowDataSize; <------>/* <------> * 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 */ <------>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; <------>} 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 */ <------>} 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 */ <------><------><------>regSize = stripSize - ref_in_start_stripe; <------><------>} <------><------>/* add complete rows in the middle of the transfer */ <------><------>if (numRows > 2) <------><------><------>regSize += (numRows-2) << raid->stripeShift; <------><------>/* if IO ends within first strip of last row*/ <------><------>if (endStrip == endRow*raid->rowDataSize) <------><------><------>regSize += ref_in_end_stripe+1; <------><------>else <------><------><------>regSize += stripSize; <------>} 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->timeout_value = <------><------>cpu_to_le16(raid->fpIoTimeoutForLd ? <------><------><------> raid->fpIoTimeoutForLd : <------><------><------> map->raidMap.fpPdIoTimeoutSec); <------>if (instance->adapter_type == INVADER_SERIES) <------><------>pRAID_Context->reg_lock_flags = (isRead) ? <------><------><------>raid->regTypeReqOnRead : raid->regTypeReqOnWrite; <------>else if (instance->adapter_type == THUNDERBOLT_SERIES) <------><------>pRAID_Context->reg_lock_flags = (isRead) ? <------><------><------>REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite; <------>pRAID_Context->virtual_disk_tgt_id = raid->targetId; <------>pRAID_Context->reg_lock_row_lba = cpu_to_le64(regStart); <------>pRAID_Context->reg_lock_length = cpu_to_le32(regSize); <------>pRAID_Context->config_seq_num = raid->seqNum; <------>/* save pointer to raid->LUN array */ <------>*raidLUN = raid->LUN; <------>/* Aero R5/6 Division Offload for WRITE */ <------>if (fusion->r56_div_offload && (raid->level >= 5) && !isRead) { <------><------>mr_get_phy_params_r56_rmw(instance, ld, start_strip, io_info, <------><------><------><------> (struct RAID_CONTEXT_G35 *)pRAID_Context, <------><------><------><------> map); <------><------>return true; <------>} <------>/*Get Phy Params only if FP capable, or else leave it to MR firmware <------> to do the calculation.*/ <------>if (io_info->fpOkForIo) { <------><------>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 == MR_DEVHANDLE_INVALID) <------><------><------>io_info->fpOkForIo = false; <------><------>return retval; <------>} else if (isRead) { <------><------>uint stripIdx; <------><------>for (stripIdx = 0; stripIdx < num_strips; stripIdx++) { <------><------><------>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; <------><------>} <------>} <------>return true; } /* ****************************************************************************** * * 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 * */ void mr_update_span_set(struct MR_DRV_RAID_MAP_ALL *map, <------>PLD_SPAN_INFO ldSpanInfo) { <------>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; <------>for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) { <------><------>ld = MR_TargetIdToLdGet(ldCount, map); <------><------>if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1)) <------><------><------>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) < <------><------><------><------><------>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); <------><------><------><------>for (count = 0, span_row_width = 0; <------><------><------><------><------>count < raid->spanDepth; count++) { <------><------><------><------><------>if (le32_to_cpu(map->raidMap.ldSpanMap[ld]. <------><------><------><------><------><------>spanBlock[count]. <------><------><------><------><------><------>block_span_info. <------><------><------><------><------><------>noElements) >= element + 1) { <------><------><------><------><------><------>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)); <------><------><------><------>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; <------><------><------><------>} 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; <------><------><------><------>} <------><------><------><------>break; <------><------>} <------><------>if (span == raid->spanDepth) <------><------><------>break; <------> } <------>} } 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; <------>for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) { <------><------>ld = MR_TargetIdToLdGet(ldCount, drv_map); <------><------>if (ld >= MAX_LOGICAL_DRIVES_EXT - 1) { <------><------><------>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; <------>} } static u8 megasas_get_best_arm_pd(struct megasas_instance *instance, <------><------><------> struct LD_LOAD_BALANCE_INFO *lbInfo, <------><------><------> struct IO_REQUEST_INFO *io_info, <------><------><------> struct MR_DRV_RAID_MAP_ALL *drv_map) { <------>struct MR_LD_RAID *raid; <------>u16 pd1_dev_handle; <------>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); <------>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 PD1 Dev Handle */ <------>pd1_dev_handle = MR_PdDevHandleGet(pd1, drv_map); <------>if (pd1_dev_handle == MR_DEVHANDLE_INVALID) { <------><------>bestArm = arm; <------>} else { <------><------>/* 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); <------><------>/* Make balance count from 16 to 4 to <------><------> * keep driver in sync with Firmware <------><------> */ <------><------>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->span_arm = <------><------><------>(span << RAID_CTX_SPANARM_SPAN_SHIFT) | bestArm; <------><------>io_info->pd_after_lb = (bestArm == arm) ? pd0 : pd1; <------>} <------>lbInfo->last_accessed_block[io_info->pd_after_lb] = block + count - 1; <------>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, <------><------><------> struct MR_DRV_RAID_MAP_ALL *drv_map) { <------>u8 arm_pd; <------>__le16 devHandle; <------>/* get best new arm (PD ID) */ <------>arm_pd = megasas_get_best_arm_pd(instance, lbInfo, io_info, drv_map); <------>devHandle = MR_PdDevHandleGet(arm_pd, drv_map); <------>io_info->pd_interface = MR_PdInterfaceTypeGet(arm_pd, drv_map); <------>atomic_inc(&lbInfo->scsi_pending_cmds[arm_pd]); <------>return devHandle; }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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