dev/mrsas/mrsas_fp.c

62 u_int8_t mrsas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, u_int8_t arm,
89 static u_int16_t MR_ArPdGet(u_int32_t ar, u_int32_t arm,
201 static u_int16_t MR_ArPdGet(u_int32_t ar, u_int32_t arm, MR_FW_RAID_MAP_ALL *map)
203     return map->raidMap.arMapInfo[ar].pd[arm];
577                        " for ld=0x%x strip=0x%lx arm is  0x%x\n", ld,
582        mrsas_dprint(sc, MRSAS_PRL11, "LSI Debug: - get_arm_from_strip: returns invalid arm"
589 /* This Function will return Phys arm */
595        u_int32_t    arm = 0;
601                        arm = mega_mod64(stripe, SPAN_ROW_SIZE(map, ld, span));
604                        // start with logical arm
605                        arm = get_arm_from_strip(sc, ld, stripe, map);
606                        arm *= 2;
611        return arm;
617 * This routine calculates the arm, span and block for the specified stripe and
642        u_int32_t     logArm, rowMod, armQ, arm;
657                arm = armQ + 1 + logArm;
658                if (arm >= SPAN_ROW_SIZE(map, ld, span))
659                        arm -= SPAN_ROW_SIZE(map ,ld ,span);
660                physArm = (u_int8_t)arm;
662                // Calculate the arm
901        // Just for testing what arm we get for strip.
1272  * mrsas_get_best_arm         Determine the best spindle arm
1275  * This function determines and returns the best arm by looking at the
1278 u_int8_t mrsas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, u_int8_t arm,
1294     if ((bestArm == arm && pend0 > pend1 + 16) || (bestArm != arm && pend1 > pend0 + 16))
1313     u_int8_t arm, old_arm;
1318     /* get best new arm */
1319     arm  = mrsas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock, io_info->numBlocks);
1320     devHandle = lbInfo->raid1DevHandle[arm];
1321     atomic_inc(&lbInfo->scsi_pending_cmds[arm]);
1327  * MR_GetPhyParams     Calculates arm, span, and block
1335  * This routine calculates the arm, span and block for the specified stripe
1351     u_int32_t rowMod, armQ, arm, logArm;
1360         logArm = mega_mod64(stripRow, raid->rowDataSize); // logical arm within row
1365         arm = armQ+1+logArm;    // data always logically follows Q
1366         if (arm >= raid->rowSize)         // handle wrap condition
1367             arm -= raid->rowSize;
1368         physArm = (u_int8_t)arm;