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@@ -0,0 +1,2248 @@
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+/*
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+ * Linux MegaRAID driver for SAS based RAID controllers
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+ *
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+ * Copyright (c) 2009-2011 LSI Corporation.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * as published by the Free Software Foundation; either version 2
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+ * of the License, or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ *
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+ * FILE: megaraid_sas_fusion.c
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+ *
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+ * Authors: LSI Corporation
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+ * Sumant Patro
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+ * Adam Radford <linuxraid@lsi.com>
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+ *
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+ * Send feedback to: <megaraidlinux@lsi.com>
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+ *
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+ * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
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+ * ATTN: Linuxraid
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/types.h>
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+#include <linux/pci.h>
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+#include <linux/list.h>
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+#include <linux/moduleparam.h>
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+#include <linux/module.h>
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+#include <linux/spinlock.h>
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+#include <linux/interrupt.h>
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+#include <linux/delay.h>
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+#include <linux/smp_lock.h>
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+#include <linux/uio.h>
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+#include <linux/uaccess.h>
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+#include <linux/fs.h>
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+#include <linux/compat.h>
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+#include <linux/blkdev.h>
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+#include <linux/mutex.h>
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+#include <linux/poll.h>
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+
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+#include <scsi/scsi.h>
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+#include <scsi/scsi_cmnd.h>
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+#include <scsi/scsi_device.h>
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+#include <scsi/scsi_host.h>
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+
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+#include "megaraid_sas_fusion.h"
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+#include "megaraid_sas.h"
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+
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+extern void megasas_free_cmds(struct megasas_instance *instance);
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+extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
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+ *instance);
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+extern void
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+megasas_complete_cmd(struct megasas_instance *instance,
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+ struct megasas_cmd *cmd, u8 alt_status);
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+int megasas_is_ldio(struct scsi_cmnd *cmd);
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+int
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+wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
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+
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+void
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+megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
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+int megasas_alloc_cmds(struct megasas_instance *instance);
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+int
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+megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
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+int
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+megasas_issue_polled(struct megasas_instance *instance,
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+ struct megasas_cmd *cmd);
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+
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+u8
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+MR_BuildRaidContext(struct IO_REQUEST_INFO *io_info,
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+ struct RAID_CONTEXT *pRAID_Context,
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+ struct MR_FW_RAID_MAP_ALL *map);
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+u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map);
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+struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
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+
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+u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
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+u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
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+ struct LD_LOAD_BALANCE_INFO *lbInfo);
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+u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
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+ struct IO_REQUEST_INFO *in_info);
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+int megasas_transition_to_ready(struct megasas_instance *instance);
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+void megaraid_sas_kill_hba(struct megasas_instance *instance);
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+
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+extern u32 megasas_dbg_lvl;
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+
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+/**
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+ * megasas_enable_intr_fusion - Enables interrupts
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+ * @regs: MFI register set
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+ */
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+void
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+megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
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+{
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+ writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
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+
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+ /* Dummy readl to force pci flush */
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+ readl(®s->outbound_intr_mask);
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+}
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+
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+/**
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+ * megasas_disable_intr_fusion - Disables interrupt
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+ * @regs: MFI register set
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+ */
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+void
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+megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
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+{
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+ u32 mask = 0xFFFFFFFF;
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+ u32 status;
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+
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+ writel(mask, ®s->outbound_intr_mask);
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+ /* Dummy readl to force pci flush */
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+ status = readl(®s->outbound_intr_mask);
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+}
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+
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+int
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+megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
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+{
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+ u32 status;
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+ /*
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+ * Check if it is our interrupt
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+ */
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+ status = readl(®s->outbound_intr_status);
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+
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+ if (status & 1) {
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+ writel(status, ®s->outbound_intr_status);
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+ readl(®s->outbound_intr_status);
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+ return 1;
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+ }
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+ if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
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+ return 0;
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+
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+ /*
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+ * dummy read to flush PCI
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+ */
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+ readl(®s->outbound_intr_status);
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+
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+ return 1;
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+}
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+
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+/**
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+ * megasas_get_cmd_fusion - Get a command from the free pool
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+ * @instance: Adapter soft state
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+ *
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+ * Returns a free command from the pool
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+ */
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+struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
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+ *instance)
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+{
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+ unsigned long flags;
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+ struct fusion_context *fusion =
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+ (struct fusion_context *)instance->ctrl_context;
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+ struct megasas_cmd_fusion *cmd = NULL;
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+
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+ spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
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+
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+ if (!list_empty(&fusion->cmd_pool)) {
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+ cmd = list_entry((&fusion->cmd_pool)->next,
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+ struct megasas_cmd_fusion, list);
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+ list_del_init(&cmd->list);
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+ } else {
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+ printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
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+ }
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+
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+ spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
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+ return cmd;
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+}
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+
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+/**
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+ * megasas_return_cmd_fusion - Return a cmd to free command pool
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+ * @instance: Adapter soft state
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+ * @cmd: Command packet to be returned to free command pool
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+ */
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+static inline void
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+megasas_return_cmd_fusion(struct megasas_instance *instance,
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+ struct megasas_cmd_fusion *cmd)
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+{
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+ unsigned long flags;
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+ struct fusion_context *fusion =
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+ (struct fusion_context *)instance->ctrl_context;
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+
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+ spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
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+
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+ cmd->scmd = NULL;
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+ cmd->sync_cmd_idx = (u32)ULONG_MAX;
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+ list_add_tail(&cmd->list, &fusion->cmd_pool);
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+
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+ spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
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+}
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+
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+/**
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+ * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
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+ * @instance: Adapter soft state
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+ */
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+static void megasas_teardown_frame_pool_fusion(
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+ struct megasas_instance *instance)
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+{
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+ int i;
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+ struct fusion_context *fusion = instance->ctrl_context;
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+
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+ u16 max_cmd = instance->max_fw_cmds;
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+
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+ struct megasas_cmd_fusion *cmd;
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+
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+ if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
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+ printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
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+ "sense pool : %p\n", fusion->sg_dma_pool,
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+ fusion->sense_dma_pool);
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+ return;
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+ }
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+
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+ /*
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+ * Return all frames to pool
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+ */
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+ for (i = 0; i < max_cmd; i++) {
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+
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+ cmd = fusion->cmd_list[i];
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+
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+ if (cmd->sg_frame)
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+ pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
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+ cmd->sg_frame_phys_addr);
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+
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+ if (cmd->sense)
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+ pci_pool_free(fusion->sense_dma_pool, cmd->sense,
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+ cmd->sense_phys_addr);
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+ }
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+
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+ /*
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+ * Now destroy the pool itself
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+ */
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+ pci_pool_destroy(fusion->sg_dma_pool);
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+ pci_pool_destroy(fusion->sense_dma_pool);
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+
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+ fusion->sg_dma_pool = NULL;
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+ fusion->sense_dma_pool = NULL;
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+}
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+
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+/**
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+ * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
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+ * @instance: Adapter soft state
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+ */
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+void
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+megasas_free_cmds_fusion(struct megasas_instance *instance)
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+{
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+ int i;
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+ struct fusion_context *fusion = instance->ctrl_context;
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+
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+ u32 max_cmds, req_sz, reply_sz, io_frames_sz;
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+
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+
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+ req_sz = fusion->request_alloc_sz;
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+ reply_sz = fusion->reply_alloc_sz;
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+ io_frames_sz = fusion->io_frames_alloc_sz;
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+
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+ max_cmds = instance->max_fw_cmds;
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+
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+ /* Free descriptors and request Frames memory */
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+ if (fusion->req_frames_desc)
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+ dma_free_coherent(&instance->pdev->dev, req_sz,
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+ fusion->req_frames_desc,
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+ fusion->req_frames_desc_phys);
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+
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+ if (fusion->reply_frames_desc) {
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+ pci_pool_free(fusion->reply_frames_desc_pool,
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+ fusion->reply_frames_desc,
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+ fusion->reply_frames_desc_phys);
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+ pci_pool_destroy(fusion->reply_frames_desc_pool);
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+ }
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+
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+ if (fusion->io_request_frames) {
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+ pci_pool_free(fusion->io_request_frames_pool,
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+ fusion->io_request_frames,
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+ fusion->io_request_frames_phys);
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+ pci_pool_destroy(fusion->io_request_frames_pool);
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+ }
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+
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+ /* Free the Fusion frame pool */
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+ megasas_teardown_frame_pool_fusion(instance);
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+
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+ /* Free all the commands in the cmd_list */
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+ for (i = 0; i < max_cmds; i++)
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+ kfree(fusion->cmd_list[i]);
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+
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+ /* Free the cmd_list buffer itself */
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+ kfree(fusion->cmd_list);
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+ fusion->cmd_list = NULL;
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+
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+ INIT_LIST_HEAD(&fusion->cmd_pool);
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+}
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+
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+/**
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+ * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
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+ * @instance: Adapter soft state
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+ *
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+ */
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+static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
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+{
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+ int i;
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+ u32 max_cmd;
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+ struct fusion_context *fusion;
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+ struct megasas_cmd_fusion *cmd;
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+ u32 total_sz_chain_frame;
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+
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+ fusion = instance->ctrl_context;
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+ max_cmd = instance->max_fw_cmds;
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+
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+ total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
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+
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+ /*
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+ * Use DMA pool facility provided by PCI layer
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+ */
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+
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+ fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
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+ instance->pdev,
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+ total_sz_chain_frame, 4,
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+ 0);
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+ if (!fusion->sg_dma_pool) {
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+ printk(KERN_DEBUG "megasas: failed to setup request pool "
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+ "fusion\n");
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+ return -ENOMEM;
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+ }
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+ fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
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+ instance->pdev,
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+ SCSI_SENSE_BUFFERSIZE, 64, 0);
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+
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+ if (!fusion->sense_dma_pool) {
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+ printk(KERN_DEBUG "megasas: failed to setup sense pool "
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+ "fusion\n");
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+ pci_pool_destroy(fusion->sg_dma_pool);
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+ fusion->sg_dma_pool = NULL;
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+ return -ENOMEM;
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+ }
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+
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+ /*
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+ * Allocate and attach a frame to each of the commands in cmd_list
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+ */
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+ for (i = 0; i < max_cmd; i++) {
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+
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+ cmd = fusion->cmd_list[i];
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+
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+ cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
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+ GFP_KERNEL,
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+ &cmd->sg_frame_phys_addr);
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+
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+ cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
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+ GFP_KERNEL, &cmd->sense_phys_addr);
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+ /*
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+ * megasas_teardown_frame_pool_fusion() takes care of freeing
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+ * whatever has been allocated
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+ */
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+ if (!cmd->sg_frame || !cmd->sense) {
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+ printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
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+ megasas_teardown_frame_pool_fusion(instance);
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+ return -ENOMEM;
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+ }
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+ }
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+ return 0;
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+}
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+
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+/**
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+ * megasas_alloc_cmds_fusion - Allocates the command packets
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+ * @instance: Adapter soft state
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+ *
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+ *
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+ * Each frame has a 32-bit field called context. This context is used to get
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+ * back the megasas_cmd_fusion from the frame when a frame gets completed
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+ * In this driver, the 32 bit values are the indices into an array cmd_list.
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+ * This array is used only to look up the megasas_cmd_fusion given the context.
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+ * The free commands themselves are maintained in a linked list called cmd_pool.
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+ *
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+ * cmds are formed in the io_request and sg_frame members of the
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+ * megasas_cmd_fusion. The context field is used to get a request descriptor
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+ * and is used as SMID of the cmd.
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+ * SMID value range is from 1 to max_fw_cmds.
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+ */
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+int
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+megasas_alloc_cmds_fusion(struct megasas_instance *instance)
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+{
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+ int i, j;
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+ u32 max_cmd, io_frames_sz;
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+ struct fusion_context *fusion;
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+ struct megasas_cmd_fusion *cmd;
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+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
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+ u32 offset;
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+ dma_addr_t io_req_base_phys;
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+ u8 *io_req_base;
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+
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+ fusion = instance->ctrl_context;
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+
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+ max_cmd = instance->max_fw_cmds;
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+
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+ fusion->req_frames_desc =
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+ dma_alloc_coherent(&instance->pdev->dev,
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+ fusion->request_alloc_sz,
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|
+ &fusion->req_frames_desc_phys, GFP_KERNEL);
|
|
|
+
|
|
|
+ if (!fusion->req_frames_desc) {
|
|
|
+ printk(KERN_ERR "megasas; Could not allocate memory for "
|
|
|
+ "request_frames\n");
|
|
|
+ goto fail_req_desc;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion->reply_frames_desc_pool =
|
|
|
+ pci_pool_create("reply_frames pool", instance->pdev,
|
|
|
+ fusion->reply_alloc_sz, 16, 0);
|
|
|
+
|
|
|
+ if (!fusion->reply_frames_desc_pool) {
|
|
|
+ printk(KERN_ERR "megasas; Could not allocate memory for "
|
|
|
+ "reply_frame pool\n");
|
|
|
+ goto fail_reply_desc;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion->reply_frames_desc =
|
|
|
+ pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
|
|
|
+ &fusion->reply_frames_desc_phys);
|
|
|
+ if (!fusion->reply_frames_desc) {
|
|
|
+ printk(KERN_ERR "megasas; Could not allocate memory for "
|
|
|
+ "reply_frame pool\n");
|
|
|
+ pci_pool_destroy(fusion->reply_frames_desc_pool);
|
|
|
+ goto fail_reply_desc;
|
|
|
+ }
|
|
|
+
|
|
|
+ reply_desc = fusion->reply_frames_desc;
|
|
|
+ for (i = 0; i < fusion->reply_q_depth; i++, reply_desc++)
|
|
|
+ reply_desc->Words = ULLONG_MAX;
|
|
|
+
|
|
|
+ io_frames_sz = fusion->io_frames_alloc_sz;
|
|
|
+
|
|
|
+ fusion->io_request_frames_pool =
|
|
|
+ pci_pool_create("io_request_frames pool", instance->pdev,
|
|
|
+ fusion->io_frames_alloc_sz, 16, 0);
|
|
|
+
|
|
|
+ if (!fusion->io_request_frames_pool) {
|
|
|
+ printk(KERN_ERR "megasas: Could not allocate memory for "
|
|
|
+ "io_request_frame pool\n");
|
|
|
+ goto fail_io_frames;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion->io_request_frames =
|
|
|
+ pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
|
|
|
+ &fusion->io_request_frames_phys);
|
|
|
+ if (!fusion->io_request_frames) {
|
|
|
+ printk(KERN_ERR "megasas: Could not allocate memory for "
|
|
|
+ "io_request_frames frames\n");
|
|
|
+ pci_pool_destroy(fusion->io_request_frames_pool);
|
|
|
+ goto fail_io_frames;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
|
|
|
+ * Allocate the dynamic array first and then allocate individual
|
|
|
+ * commands.
|
|
|
+ */
|
|
|
+ fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
|
|
|
+ *max_cmd, GFP_KERNEL);
|
|
|
+
|
|
|
+ if (!fusion->cmd_list) {
|
|
|
+ printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
|
|
|
+ "memory for cmd_list_fusion\n");
|
|
|
+ goto fail_cmd_list;
|
|
|
+ }
|
|
|
+
|
|
|
+ memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
|
|
|
+ *max_cmd);
|
|
|
+
|
|
|
+ max_cmd = instance->max_fw_cmds;
|
|
|
+ for (i = 0; i < max_cmd; i++) {
|
|
|
+ fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
|
|
|
+ GFP_KERNEL);
|
|
|
+ if (!fusion->cmd_list[i]) {
|
|
|
+ printk(KERN_ERR "Could not alloc cmd list fusion\n");
|
|
|
+
|
|
|
+ for (j = 0; j < i; j++)
|
|
|
+ kfree(fusion->cmd_list[j]);
|
|
|
+
|
|
|
+ kfree(fusion->cmd_list);
|
|
|
+ fusion->cmd_list = NULL;
|
|
|
+ goto fail_cmd_list;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
|
|
|
+ io_req_base = fusion->io_request_frames +
|
|
|
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
|
|
|
+ io_req_base_phys = fusion->io_request_frames_phys +
|
|
|
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Add all the commands to command pool (fusion->cmd_pool)
|
|
|
+ */
|
|
|
+
|
|
|
+ /* SMID 0 is reserved. Set SMID/index from 1 */
|
|
|
+ for (i = 0; i < max_cmd; i++) {
|
|
|
+ cmd = fusion->cmd_list[i];
|
|
|
+ offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
|
|
|
+ memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
|
|
|
+ cmd->index = i + 1;
|
|
|
+ cmd->scmd = NULL;
|
|
|
+ cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
|
|
|
+ cmd->instance = instance;
|
|
|
+ cmd->io_request =
|
|
|
+ (struct MPI2_RAID_SCSI_IO_REQUEST *)
|
|
|
+ (io_req_base + offset);
|
|
|
+ memset(cmd->io_request, 0,
|
|
|
+ sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
|
|
|
+ cmd->io_request_phys_addr = io_req_base_phys + offset;
|
|
|
+
|
|
|
+ list_add_tail(&cmd->list, &fusion->cmd_pool);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Create a frame pool and assign one frame to each cmd
|
|
|
+ */
|
|
|
+ if (megasas_create_frame_pool_fusion(instance)) {
|
|
|
+ printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
|
|
|
+ megasas_free_cmds_fusion(instance);
|
|
|
+ goto fail_req_desc;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+fail_cmd_list:
|
|
|
+ pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
|
|
|
+ fusion->io_request_frames_phys);
|
|
|
+ pci_pool_destroy(fusion->io_request_frames_pool);
|
|
|
+fail_io_frames:
|
|
|
+ dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
|
|
|
+ fusion->reply_frames_desc,
|
|
|
+ fusion->reply_frames_desc_phys);
|
|
|
+ pci_pool_free(fusion->reply_frames_desc_pool,
|
|
|
+ fusion->reply_frames_desc,
|
|
|
+ fusion->reply_frames_desc_phys);
|
|
|
+ pci_pool_destroy(fusion->reply_frames_desc_pool);
|
|
|
+
|
|
|
+fail_reply_desc:
|
|
|
+ dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
|
|
|
+ fusion->req_frames_desc,
|
|
|
+ fusion->req_frames_desc_phys);
|
|
|
+fail_req_desc:
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * wait_and_poll - Issues a polling command
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @cmd: Command packet to be issued
|
|
|
+ *
|
|
|
+ * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
|
|
|
+ */
|
|
|
+int
|
|
|
+wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ struct megasas_header *frame_hdr = &cmd->frame->hdr;
|
|
|
+
|
|
|
+ u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Wait for cmd_status to change
|
|
|
+ */
|
|
|
+ for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
|
|
|
+ rmb();
|
|
|
+ msleep(20);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (frame_hdr->cmd_status == 0xff)
|
|
|
+ return -ETIME;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_ioc_init_fusion - Initializes the FW
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ *
|
|
|
+ * Issues the IOC Init cmd
|
|
|
+ */
|
|
|
+int
|
|
|
+megasas_ioc_init_fusion(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ struct megasas_init_frame *init_frame;
|
|
|
+ struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
|
|
|
+ dma_addr_t ioc_init_handle;
|
|
|
+ u32 context;
|
|
|
+ struct megasas_cmd *cmd;
|
|
|
+ u8 ret;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ int i;
|
|
|
+ struct megasas_header *frame_hdr;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ cmd = megasas_get_cmd(instance);
|
|
|
+
|
|
|
+ if (!cmd) {
|
|
|
+ printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
|
|
|
+ ret = 1;
|
|
|
+ goto fail_get_cmd;
|
|
|
+ }
|
|
|
+
|
|
|
+ IOCInitMessage =
|
|
|
+ dma_alloc_coherent(&instance->pdev->dev,
|
|
|
+ sizeof(struct MPI2_IOC_INIT_REQUEST),
|
|
|
+ &ioc_init_handle, GFP_KERNEL);
|
|
|
+
|
|
|
+ if (!IOCInitMessage) {
|
|
|
+ printk(KERN_ERR "Could not allocate memory for "
|
|
|
+ "IOCInitMessage\n");
|
|
|
+ ret = 1;
|
|
|
+ goto fail_fw_init;
|
|
|
+ }
|
|
|
+
|
|
|
+ memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
|
|
|
+
|
|
|
+ IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
|
|
|
+ IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
|
|
|
+ IOCInitMessage->MsgVersion = MPI2_VERSION;
|
|
|
+ IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
|
|
|
+ IOCInitMessage->SystemRequestFrameSize =
|
|
|
+ MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
|
|
|
+
|
|
|
+ IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
|
|
|
+ IOCInitMessage->ReplyDescriptorPostQueueAddress =
|
|
|
+ fusion->reply_frames_desc_phys;
|
|
|
+ IOCInitMessage->SystemRequestFrameBaseAddress =
|
|
|
+ fusion->io_request_frames_phys;
|
|
|
+
|
|
|
+ init_frame = (struct megasas_init_frame *)cmd->frame;
|
|
|
+ memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
|
|
|
+
|
|
|
+ frame_hdr = &cmd->frame->hdr;
|
|
|
+ context = init_frame->context;
|
|
|
+ init_frame->context = context;
|
|
|
+
|
|
|
+ frame_hdr->cmd_status = 0xFF;
|
|
|
+ frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
|
|
|
+
|
|
|
+ init_frame->cmd = MFI_CMD_INIT;
|
|
|
+ init_frame->cmd_status = 0xFF;
|
|
|
+
|
|
|
+ init_frame->queue_info_new_phys_addr_lo = ioc_init_handle;
|
|
|
+ init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
|
|
|
+
|
|
|
+ req_desc =
|
|
|
+ (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
|
|
|
+
|
|
|
+ req_desc->Words = cmd->frame_phys_addr;
|
|
|
+ req_desc->MFAIo.RequestFlags =
|
|
|
+ (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
|
|
|
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * disable the intr before firing the init frame
|
|
|
+ */
|
|
|
+ instance->instancet->disable_intr(instance->reg_set);
|
|
|
+
|
|
|
+ for (i = 0; i < (10 * 1000); i += 20) {
|
|
|
+ if (readl(&instance->reg_set->doorbell) & 1)
|
|
|
+ msleep(20);
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ instance->instancet->fire_cmd(instance, req_desc->u.low,
|
|
|
+ req_desc->u.high, instance->reg_set);
|
|
|
+
|
|
|
+ wait_and_poll(instance, cmd);
|
|
|
+
|
|
|
+ frame_hdr = &cmd->frame->hdr;
|
|
|
+ if (frame_hdr->cmd_status != 0) {
|
|
|
+ ret = 1;
|
|
|
+ goto fail_fw_init;
|
|
|
+ }
|
|
|
+ printk(KERN_ERR "megasas:IOC Init cmd success\n");
|
|
|
+
|
|
|
+ ret = 0;
|
|
|
+
|
|
|
+fail_fw_init:
|
|
|
+ megasas_return_cmd(instance, cmd);
|
|
|
+ if (IOCInitMessage)
|
|
|
+ dma_free_coherent(&instance->pdev->dev,
|
|
|
+ sizeof(struct MPI2_IOC_INIT_REQUEST),
|
|
|
+ IOCInitMessage, ioc_init_handle);
|
|
|
+fail_get_cmd:
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * megasas_return_cmd_for_smid - Returns a cmd_fusion for a SMID
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ *
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_return_cmd_for_smid(struct megasas_instance *instance, u16 smid)
|
|
|
+{
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct megasas_cmd_fusion *cmd;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+ cmd = fusion->cmd_list[smid - 1];
|
|
|
+ megasas_return_cmd_fusion(instance, cmd);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * megasas_get_ld_map_info - Returns FW's ld_map structure
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @pend: Pend the command or not
|
|
|
+ * Issues an internal command (DCMD) to get the FW's controller PD
|
|
|
+ * list structure. This information is mainly used to find out SYSTEM
|
|
|
+ * supported by the FW.
|
|
|
+ */
|
|
|
+static int
|
|
|
+megasas_get_ld_map_info(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ int ret = 0;
|
|
|
+ struct megasas_cmd *cmd;
|
|
|
+ struct megasas_dcmd_frame *dcmd;
|
|
|
+ struct MR_FW_RAID_MAP_ALL *ci;
|
|
|
+ dma_addr_t ci_h = 0;
|
|
|
+ u32 size_map_info;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+
|
|
|
+ cmd = megasas_get_cmd(instance);
|
|
|
+
|
|
|
+ if (!cmd) {
|
|
|
+ printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ if (!fusion) {
|
|
|
+ megasas_return_cmd(instance, cmd);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ dcmd = &cmd->frame->dcmd;
|
|
|
+
|
|
|
+ size_map_info = sizeof(struct MR_FW_RAID_MAP) +
|
|
|
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
|
|
|
+
|
|
|
+ ci = fusion->ld_map[(instance->map_id & 1)];
|
|
|
+ ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
|
|
|
+
|
|
|
+ if (!ci) {
|
|
|
+ printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
|
|
|
+ megasas_return_cmd(instance, cmd);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+
|
|
|
+ memset(ci, 0, sizeof(*ci));
|
|
|
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
|
|
|
+
|
|
|
+ dcmd->cmd = MFI_CMD_DCMD;
|
|
|
+ dcmd->cmd_status = 0xFF;
|
|
|
+ dcmd->sge_count = 1;
|
|
|
+ dcmd->flags = MFI_FRAME_DIR_READ;
|
|
|
+ dcmd->timeout = 0;
|
|
|
+ dcmd->pad_0 = 0;
|
|
|
+ dcmd->data_xfer_len = size_map_info;
|
|
|
+ dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
|
|
|
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
|
|
|
+ dcmd->sgl.sge32[0].length = size_map_info;
|
|
|
+
|
|
|
+ if (!megasas_issue_polled(instance, cmd))
|
|
|
+ ret = 0;
|
|
|
+ else {
|
|
|
+ printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
|
|
|
+ ret = -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ megasas_return_cmd(instance, cmd);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+u8
|
|
|
+megasas_get_map_info(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ struct fusion_context *fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ fusion->fast_path_io = 0;
|
|
|
+ if (!megasas_get_ld_map_info(instance)) {
|
|
|
+ if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)],
|
|
|
+ fusion->load_balance_info)) {
|
|
|
+ fusion->fast_path_io = 1;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * megasas_sync_map_info - Returns FW's ld_map structure
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ *
|
|
|
+ * Issues an internal command (DCMD) to get the FW's controller PD
|
|
|
+ * list structure. This information is mainly used to find out SYSTEM
|
|
|
+ * supported by the FW.
|
|
|
+ */
|
|
|
+int
|
|
|
+megasas_sync_map_info(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ int ret = 0, i;
|
|
|
+ struct megasas_cmd *cmd;
|
|
|
+ struct megasas_dcmd_frame *dcmd;
|
|
|
+ u32 size_sync_info, num_lds;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct MR_LD_TARGET_SYNC *ci = NULL;
|
|
|
+ struct MR_FW_RAID_MAP_ALL *map;
|
|
|
+ struct MR_LD_RAID *raid;
|
|
|
+ struct MR_LD_TARGET_SYNC *ld_sync;
|
|
|
+ dma_addr_t ci_h = 0;
|
|
|
+ u32 size_map_info;
|
|
|
+
|
|
|
+ cmd = megasas_get_cmd(instance);
|
|
|
+
|
|
|
+ if (!cmd) {
|
|
|
+ printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
|
|
|
+ "info.\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ if (!fusion) {
|
|
|
+ megasas_return_cmd(instance, cmd);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ map = fusion->ld_map[instance->map_id & 1];
|
|
|
+
|
|
|
+ num_lds = map->raidMap.ldCount;
|
|
|
+
|
|
|
+ dcmd = &cmd->frame->dcmd;
|
|
|
+
|
|
|
+ size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
|
|
|
+
|
|
|
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
|
|
|
+
|
|
|
+ ci = (struct MR_LD_TARGET_SYNC *)
|
|
|
+ fusion->ld_map[(instance->map_id - 1) & 1];
|
|
|
+ memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL));
|
|
|
+
|
|
|
+ ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
|
|
|
+
|
|
|
+ ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
|
|
|
+
|
|
|
+ for (i = 0; i < num_lds; i++, ld_sync++) {
|
|
|
+ raid = MR_LdRaidGet(i, map);
|
|
|
+ ld_sync->targetId = MR_GetLDTgtId(i, map);
|
|
|
+ ld_sync->seqNum = raid->seqNum;
|
|
|
+ }
|
|
|
+
|
|
|
+ size_map_info = sizeof(struct MR_FW_RAID_MAP) +
|
|
|
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
|
|
|
+
|
|
|
+ dcmd->cmd = MFI_CMD_DCMD;
|
|
|
+ dcmd->cmd_status = 0xFF;
|
|
|
+ dcmd->sge_count = 1;
|
|
|
+ dcmd->flags = MFI_FRAME_DIR_WRITE;
|
|
|
+ dcmd->timeout = 0;
|
|
|
+ dcmd->pad_0 = 0;
|
|
|
+ dcmd->data_xfer_len = size_map_info;
|
|
|
+ dcmd->mbox.b[0] = num_lds;
|
|
|
+ dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
|
|
|
+ dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
|
|
|
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
|
|
|
+ dcmd->sgl.sge32[0].length = size_map_info;
|
|
|
+
|
|
|
+ instance->map_update_cmd = cmd;
|
|
|
+
|
|
|
+ instance->instancet->issue_dcmd(instance, cmd);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_init_adapter_fusion - Initializes the FW
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ *
|
|
|
+ * This is the main function for initializing firmware.
|
|
|
+ */
|
|
|
+u32
|
|
|
+megasas_init_adapter_fusion(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ struct megasas_register_set __iomem *reg_set;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ u32 max_cmd;
|
|
|
+ int i = 0;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ reg_set = instance->reg_set;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Get various operational parameters from status register
|
|
|
+ */
|
|
|
+ instance->max_fw_cmds =
|
|
|
+ instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
|
|
|
+ instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Reduce the max supported cmds by 1. This is to ensure that the
|
|
|
+ * reply_q_sz (1 more than the max cmd that driver may send)
|
|
|
+ * does not exceed max cmds that the FW can support
|
|
|
+ */
|
|
|
+ instance->max_fw_cmds = instance->max_fw_cmds-1;
|
|
|
+ /* Only internal cmds (DCMD) need to have MFI frames */
|
|
|
+ instance->max_mfi_cmds = MEGASAS_INT_CMDS;
|
|
|
+
|
|
|
+ max_cmd = instance->max_fw_cmds;
|
|
|
+
|
|
|
+ fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
|
|
|
+
|
|
|
+ fusion->request_alloc_sz =
|
|
|
+ sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
|
|
|
+ fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
|
|
|
+ *(fusion->reply_q_depth);
|
|
|
+ fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
|
|
|
+ (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
|
|
|
+ (max_cmd + 1)); /* Extra 1 for SMID 0 */
|
|
|
+
|
|
|
+ fusion->max_sge_in_main_msg =
|
|
|
+ (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
|
|
|
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
|
|
|
+
|
|
|
+ fusion->max_sge_in_chain =
|
|
|
+ MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
|
|
|
+
|
|
|
+ instance->max_num_sge = fusion->max_sge_in_main_msg +
|
|
|
+ fusion->max_sge_in_chain - 2;
|
|
|
+
|
|
|
+ /* Used for pass thru MFI frame (DCMD) */
|
|
|
+ fusion->chain_offset_mfi_pthru =
|
|
|
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
|
|
|
+
|
|
|
+ fusion->chain_offset_io_request =
|
|
|
+ (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
|
|
|
+ sizeof(union MPI2_SGE_IO_UNION))/16;
|
|
|
+
|
|
|
+ fusion->last_reply_idx = 0;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Allocate memory for descriptors
|
|
|
+ * Create a pool of commands
|
|
|
+ */
|
|
|
+ if (megasas_alloc_cmds(instance))
|
|
|
+ goto fail_alloc_mfi_cmds;
|
|
|
+ if (megasas_alloc_cmds_fusion(instance))
|
|
|
+ goto fail_alloc_cmds;
|
|
|
+
|
|
|
+ if (megasas_ioc_init_fusion(instance))
|
|
|
+ goto fail_ioc_init;
|
|
|
+
|
|
|
+ instance->flag_ieee = 1;
|
|
|
+
|
|
|
+ fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
|
|
|
+ (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
|
|
|
+
|
|
|
+ fusion->fast_path_io = 0;
|
|
|
+
|
|
|
+ for (i = 0; i < 2; i++) {
|
|
|
+ fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
|
|
|
+ fusion->map_sz,
|
|
|
+ &fusion->ld_map_phys[i],
|
|
|
+ GFP_KERNEL);
|
|
|
+ if (!fusion->ld_map[i]) {
|
|
|
+ printk(KERN_ERR "megasas: Could not allocate memory "
|
|
|
+ "for map info\n");
|
|
|
+ goto fail_map_info;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!megasas_get_map_info(instance))
|
|
|
+ megasas_sync_map_info(instance);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+fail_alloc_cmds:
|
|
|
+fail_alloc_mfi_cmds:
|
|
|
+fail_map_info:
|
|
|
+ if (i == 1)
|
|
|
+ dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
|
|
|
+ fusion->ld_map[0], fusion->ld_map_phys[0]);
|
|
|
+fail_ioc_init:
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_fire_cmd_fusion - Sends command to the FW
|
|
|
+ * @frame_phys_addr : Physical address of cmd
|
|
|
+ * @frame_count : Number of frames for the command
|
|
|
+ * @regs : MFI register set
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_fire_cmd_fusion(struct megasas_instance *instance,
|
|
|
+ dma_addr_t req_desc_lo,
|
|
|
+ u32 req_desc_hi,
|
|
|
+ struct megasas_register_set __iomem *regs)
|
|
|
+{
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&instance->hba_lock, flags);
|
|
|
+
|
|
|
+ writel(req_desc_lo,
|
|
|
+ &(regs)->inbound_low_queue_port);
|
|
|
+ writel(req_desc_hi, &(regs)->inbound_high_queue_port);
|
|
|
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * map_cmd_status - Maps FW cmd status to OS cmd status
|
|
|
+ * @cmd : Pointer to cmd
|
|
|
+ * @status : status of cmd returned by FW
|
|
|
+ * @ext_status : ext status of cmd returned by FW
|
|
|
+ */
|
|
|
+
|
|
|
+void
|
|
|
+map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
|
|
|
+{
|
|
|
+
|
|
|
+ switch (status) {
|
|
|
+
|
|
|
+ case MFI_STAT_OK:
|
|
|
+ cmd->scmd->result = DID_OK << 16;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case MFI_STAT_SCSI_IO_FAILED:
|
|
|
+ case MFI_STAT_LD_INIT_IN_PROGRESS:
|
|
|
+ cmd->scmd->result = (DID_ERROR << 16) | ext_status;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case MFI_STAT_SCSI_DONE_WITH_ERROR:
|
|
|
+
|
|
|
+ cmd->scmd->result = (DID_OK << 16) | ext_status;
|
|
|
+ if (ext_status == SAM_STAT_CHECK_CONDITION) {
|
|
|
+ memset(cmd->scmd->sense_buffer, 0,
|
|
|
+ SCSI_SENSE_BUFFERSIZE);
|
|
|
+ memcpy(cmd->scmd->sense_buffer, cmd->sense,
|
|
|
+ SCSI_SENSE_BUFFERSIZE);
|
|
|
+ cmd->scmd->result |= DRIVER_SENSE << 24;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case MFI_STAT_LD_OFFLINE:
|
|
|
+ case MFI_STAT_DEVICE_NOT_FOUND:
|
|
|
+ cmd->scmd->result = DID_BAD_TARGET << 16;
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ printk(KERN_DEBUG "megasas: FW status %#x\n", status);
|
|
|
+ cmd->scmd->result = DID_ERROR << 16;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_make_sgl_fusion - Prepares 32-bit SGL
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @scp: SCSI command from the mid-layer
|
|
|
+ * @sgl_ptr: SGL to be filled in
|
|
|
+ * @cmd: cmd we are working on
|
|
|
+ *
|
|
|
+ * If successful, this function returns the number of SG elements.
|
|
|
+ */
|
|
|
+static int
|
|
|
+megasas_make_sgl_fusion(struct megasas_instance *instance,
|
|
|
+ struct scsi_cmnd *scp,
|
|
|
+ struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
|
|
|
+ struct megasas_cmd_fusion *cmd)
|
|
|
+{
|
|
|
+ int i, sg_processed;
|
|
|
+ int sge_count, sge_idx;
|
|
|
+ struct scatterlist *os_sgl;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ cmd->io_request->ChainOffset = 0;
|
|
|
+
|
|
|
+ sge_count = scsi_dma_map(scp);
|
|
|
+
|
|
|
+ BUG_ON(sge_count < 0);
|
|
|
+
|
|
|
+ if (sge_count > instance->max_num_sge || !sge_count)
|
|
|
+ return sge_count;
|
|
|
+
|
|
|
+ if (sge_count > fusion->max_sge_in_main_msg) {
|
|
|
+ /* One element to store the chain info */
|
|
|
+ sge_idx = fusion->max_sge_in_main_msg - 1;
|
|
|
+ } else
|
|
|
+ sge_idx = sge_count;
|
|
|
+
|
|
|
+ scsi_for_each_sg(scp, os_sgl, sge_count, i) {
|
|
|
+ sgl_ptr->Length = sg_dma_len(os_sgl);
|
|
|
+ sgl_ptr->Address = sg_dma_address(os_sgl);
|
|
|
+ sgl_ptr->Flags = 0;
|
|
|
+ sgl_ptr++;
|
|
|
+
|
|
|
+ sg_processed = i + 1;
|
|
|
+
|
|
|
+ if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
|
|
|
+ (sge_count > fusion->max_sge_in_main_msg)) {
|
|
|
+
|
|
|
+ struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
|
|
|
+ cmd->io_request->ChainOffset =
|
|
|
+ fusion->chain_offset_io_request;
|
|
|
+ sg_chain = sgl_ptr;
|
|
|
+ /* Prepare chain element */
|
|
|
+ sg_chain->NextChainOffset = 0;
|
|
|
+ sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
|
|
|
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
|
|
|
+ sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
|
|
|
+ *(sge_count - sg_processed));
|
|
|
+ sg_chain->Address = cmd->sg_frame_phys_addr;
|
|
|
+
|
|
|
+ sgl_ptr =
|
|
|
+ (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return sge_count;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_set_pd_lba - Sets PD LBA
|
|
|
+ * @cdb: CDB
|
|
|
+ * @cdb_len: cdb length
|
|
|
+ * @start_blk: Start block of IO
|
|
|
+ *
|
|
|
+ * Used to set the PD LBA in CDB for FP IOs
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
|
|
|
+ struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
|
|
|
+ struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
|
|
|
+{
|
|
|
+ struct MR_LD_RAID *raid;
|
|
|
+ u32 ld;
|
|
|
+ u64 start_blk = io_info->pdBlock;
|
|
|
+ u8 *cdb = io_request->CDB.CDB32;
|
|
|
+ u32 num_blocks = io_info->numBlocks;
|
|
|
+ u8 opcode, flagvals, groupnum, control;
|
|
|
+
|
|
|
+ /* Check if T10 PI (DIF) is enabled for this LD */
|
|
|
+ ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
|
|
|
+ raid = MR_LdRaidGet(ld, local_map_ptr);
|
|
|
+ if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
|
|
|
+ memset(cdb, 0, sizeof(io_request->CDB.CDB32));
|
|
|
+ cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
|
|
|
+ cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
|
|
|
+
|
|
|
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
|
|
|
+ cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
|
|
|
+ else
|
|
|
+ cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
|
|
|
+ cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
|
|
|
+
|
|
|
+ /* LBA */
|
|
|
+ cdb[12] = (u8)((start_blk >> 56) & 0xff);
|
|
|
+ cdb[13] = (u8)((start_blk >> 48) & 0xff);
|
|
|
+ cdb[14] = (u8)((start_blk >> 40) & 0xff);
|
|
|
+ cdb[15] = (u8)((start_blk >> 32) & 0xff);
|
|
|
+ cdb[16] = (u8)((start_blk >> 24) & 0xff);
|
|
|
+ cdb[17] = (u8)((start_blk >> 16) & 0xff);
|
|
|
+ cdb[18] = (u8)((start_blk >> 8) & 0xff);
|
|
|
+ cdb[19] = (u8)(start_blk & 0xff);
|
|
|
+
|
|
|
+ /* Logical block reference tag */
|
|
|
+ io_request->CDB.EEDP32.PrimaryReferenceTag =
|
|
|
+ cpu_to_be32(ref_tag);
|
|
|
+ io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
|
|
|
+
|
|
|
+ io_request->DataLength = num_blocks * 512;
|
|
|
+ io_request->IoFlags = 32; /* Specify 32-byte cdb */
|
|
|
+
|
|
|
+ /* Transfer length */
|
|
|
+ cdb[28] = (u8)((num_blocks >> 24) & 0xff);
|
|
|
+ cdb[29] = (u8)((num_blocks >> 16) & 0xff);
|
|
|
+ cdb[30] = (u8)((num_blocks >> 8) & 0xff);
|
|
|
+ cdb[31] = (u8)(num_blocks & 0xff);
|
|
|
+
|
|
|
+ /* set SCSI IO EEDPFlags */
|
|
|
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
|
|
|
+ io_request->EEDPFlags =
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
|
|
|
+ } else {
|
|
|
+ io_request->EEDPFlags =
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
|
|
|
+ MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
|
|
|
+ }
|
|
|
+ io_request->Control |= (0x4 << 26);
|
|
|
+ io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE;
|
|
|
+ } else {
|
|
|
+ /* Some drives don't support 16/12 byte CDB's, convert to 10 */
|
|
|
+ if (((cdb_len == 12) || (cdb_len == 16)) &&
|
|
|
+ (start_blk <= 0xffffffff)) {
|
|
|
+ if (cdb_len == 16) {
|
|
|
+ opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
|
|
|
+ flagvals = cdb[1];
|
|
|
+ groupnum = cdb[14];
|
|
|
+ control = cdb[15];
|
|
|
+ } else {
|
|
|
+ opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
|
|
|
+ flagvals = cdb[1];
|
|
|
+ groupnum = cdb[10];
|
|
|
+ control = cdb[11];
|
|
|
+ }
|
|
|
+
|
|
|
+ memset(cdb, 0, sizeof(io_request->CDB.CDB32));
|
|
|
+
|
|
|
+ cdb[0] = opcode;
|
|
|
+ cdb[1] = flagvals;
|
|
|
+ cdb[6] = groupnum;
|
|
|
+ cdb[9] = control;
|
|
|
+
|
|
|
+ /* Transfer length */
|
|
|
+ cdb[8] = (u8)(num_blocks & 0xff);
|
|
|
+ cdb[7] = (u8)((num_blocks >> 8) & 0xff);
|
|
|
+
|
|
|
+ cdb_len = 10;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Normal case, just load LBA here */
|
|
|
+ switch (cdb_len) {
|
|
|
+ case 6:
|
|
|
+ {
|
|
|
+ u8 val = cdb[1] & 0xE0;
|
|
|
+ cdb[3] = (u8)(start_blk & 0xff);
|
|
|
+ cdb[2] = (u8)((start_blk >> 8) & 0xff);
|
|
|
+ cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case 10:
|
|
|
+ cdb[5] = (u8)(start_blk & 0xff);
|
|
|
+ cdb[4] = (u8)((start_blk >> 8) & 0xff);
|
|
|
+ cdb[3] = (u8)((start_blk >> 16) & 0xff);
|
|
|
+ cdb[2] = (u8)((start_blk >> 24) & 0xff);
|
|
|
+ break;
|
|
|
+ case 12:
|
|
|
+ cdb[5] = (u8)(start_blk & 0xff);
|
|
|
+ cdb[4] = (u8)((start_blk >> 8) & 0xff);
|
|
|
+ cdb[3] = (u8)((start_blk >> 16) & 0xff);
|
|
|
+ cdb[2] = (u8)((start_blk >> 24) & 0xff);
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ cdb[9] = (u8)(start_blk & 0xff);
|
|
|
+ cdb[8] = (u8)((start_blk >> 8) & 0xff);
|
|
|
+ cdb[7] = (u8)((start_blk >> 16) & 0xff);
|
|
|
+ cdb[6] = (u8)((start_blk >> 24) & 0xff);
|
|
|
+ cdb[5] = (u8)((start_blk >> 32) & 0xff);
|
|
|
+ cdb[4] = (u8)((start_blk >> 40) & 0xff);
|
|
|
+ cdb[3] = (u8)((start_blk >> 48) & 0xff);
|
|
|
+ cdb[2] = (u8)((start_blk >> 56) & 0xff);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_build_ldio_fusion - Prepares IOs to devices
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @scp: SCSI command
|
|
|
+ * @cmd: Command to be prepared
|
|
|
+ *
|
|
|
+ * Prepares the io_request and chain elements (sg_frame) for IO
|
|
|
+ * The IO can be for PD (Fast Path) or LD
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_build_ldio_fusion(struct megasas_instance *instance,
|
|
|
+ struct scsi_cmnd *scp,
|
|
|
+ struct megasas_cmd_fusion *cmd)
|
|
|
+{
|
|
|
+ u8 fp_possible;
|
|
|
+ u32 start_lba_lo, start_lba_hi, device_id;
|
|
|
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ struct IO_REQUEST_INFO io_info;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct MR_FW_RAID_MAP_ALL *local_map_ptr;
|
|
|
+
|
|
|
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ io_request = cmd->io_request;
|
|
|
+ io_request->RaidContext.VirtualDiskTgtId = device_id;
|
|
|
+ io_request->RaidContext.status = 0;
|
|
|
+ io_request->RaidContext.exStatus = 0;
|
|
|
+
|
|
|
+ req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
|
|
|
+
|
|
|
+ start_lba_lo = 0;
|
|
|
+ start_lba_hi = 0;
|
|
|
+ fp_possible = 0;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * 6-byte READ(0x08) or WRITE(0x0A) cdb
|
|
|
+ */
|
|
|
+ if (scp->cmd_len == 6) {
|
|
|
+ io_request->DataLength = (u32) scp->cmnd[4];
|
|
|
+ start_lba_lo = ((u32) scp->cmnd[1] << 16) |
|
|
|
+ ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
|
|
|
+
|
|
|
+ start_lba_lo &= 0x1FFFFF;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * 10-byte READ(0x28) or WRITE(0x2A) cdb
|
|
|
+ */
|
|
|
+ else if (scp->cmd_len == 10) {
|
|
|
+ io_request->DataLength = (u32) scp->cmnd[8] |
|
|
|
+ ((u32) scp->cmnd[7] << 8);
|
|
|
+ start_lba_lo = ((u32) scp->cmnd[2] << 24) |
|
|
|
+ ((u32) scp->cmnd[3] << 16) |
|
|
|
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * 12-byte READ(0xA8) or WRITE(0xAA) cdb
|
|
|
+ */
|
|
|
+ else if (scp->cmd_len == 12) {
|
|
|
+ io_request->DataLength = ((u32) scp->cmnd[6] << 24) |
|
|
|
+ ((u32) scp->cmnd[7] << 16) |
|
|
|
+ ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
|
|
|
+ start_lba_lo = ((u32) scp->cmnd[2] << 24) |
|
|
|
+ ((u32) scp->cmnd[3] << 16) |
|
|
|
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * 16-byte READ(0x88) or WRITE(0x8A) cdb
|
|
|
+ */
|
|
|
+ else if (scp->cmd_len == 16) {
|
|
|
+ io_request->DataLength = ((u32) scp->cmnd[10] << 24) |
|
|
|
+ ((u32) scp->cmnd[11] << 16) |
|
|
|
+ ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
|
|
|
+ start_lba_lo = ((u32) scp->cmnd[6] << 24) |
|
|
|
+ ((u32) scp->cmnd[7] << 16) |
|
|
|
+ ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
|
|
|
+
|
|
|
+ start_lba_hi = ((u32) scp->cmnd[2] << 24) |
|
|
|
+ ((u32) scp->cmnd[3] << 16) |
|
|
|
+ ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
|
|
|
+ }
|
|
|
+
|
|
|
+ memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
|
|
|
+ io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
|
|
|
+ io_info.numBlocks = io_request->DataLength;
|
|
|
+ io_info.ldTgtId = device_id;
|
|
|
+
|
|
|
+ if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
|
|
|
+ io_info.isRead = 1;
|
|
|
+
|
|
|
+ local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
|
|
|
+
|
|
|
+ if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
|
|
|
+ MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
|
|
|
+ io_request->RaidContext.regLockFlags = 0;
|
|
|
+ fp_possible = 0;
|
|
|
+ } else {
|
|
|
+ if (MR_BuildRaidContext(&io_info, &io_request->RaidContext,
|
|
|
+ local_map_ptr))
|
|
|
+ fp_possible = io_info.fpOkForIo;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (fp_possible) {
|
|
|
+ megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
|
|
|
+ local_map_ptr, start_lba_lo);
|
|
|
+ io_request->DataLength = scsi_bufflen(scp);
|
|
|
+ io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
|
|
|
+ cmd->request_desc->SCSIIO.RequestFlags =
|
|
|
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
|
|
|
+ << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+ if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
|
|
|
+ (io_info.isRead)) {
|
|
|
+ io_info.devHandle =
|
|
|
+ get_updated_dev_handle(
|
|
|
+ &fusion->load_balance_info[device_id],
|
|
|
+ &io_info);
|
|
|
+ scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
|
|
|
+ } else
|
|
|
+ scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
|
|
|
+ cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
|
|
|
+ io_request->DevHandle = io_info.devHandle;
|
|
|
+ } else {
|
|
|
+ io_request->RaidContext.timeoutValue =
|
|
|
+ local_map_ptr->raidMap.fpPdIoTimeoutSec;
|
|
|
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
|
|
|
+ io_request->DevHandle = device_id;
|
|
|
+ cmd->request_desc->SCSIIO.RequestFlags =
|
|
|
+ (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
|
|
|
+ << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+ } /* Not FP */
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_build_dcdb_fusion - Prepares IOs to devices
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @scp: SCSI command
|
|
|
+ * @cmd: Command to be prepared
|
|
|
+ *
|
|
|
+ * Prepares the io_request frame for non-io cmds
|
|
|
+ */
|
|
|
+static void
|
|
|
+megasas_build_dcdb_fusion(struct megasas_instance *instance,
|
|
|
+ struct scsi_cmnd *scmd,
|
|
|
+ struct megasas_cmd_fusion *cmd)
|
|
|
+{
|
|
|
+ u32 device_id;
|
|
|
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
|
|
|
+ u16 pd_index = 0;
|
|
|
+ struct MR_FW_RAID_MAP_ALL *local_map_ptr;
|
|
|
+ struct fusion_context *fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ io_request = cmd->io_request;
|
|
|
+ device_id = MEGASAS_DEV_INDEX(instance, scmd);
|
|
|
+ pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
|
|
|
+ +scmd->device->id;
|
|
|
+ local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
|
|
|
+
|
|
|
+ /* Check if this is a system PD I/O */
|
|
|
+ if ((instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) &&
|
|
|
+ (instance->pd_list[pd_index].driveType == TYPE_DISK)) {
|
|
|
+ io_request->Function = 0;
|
|
|
+ io_request->DevHandle =
|
|
|
+ local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
|
|
|
+ io_request->RaidContext.timeoutValue =
|
|
|
+ local_map_ptr->raidMap.fpPdIoTimeoutSec;
|
|
|
+ io_request->RaidContext.regLockFlags = 0;
|
|
|
+ io_request->RaidContext.regLockRowLBA = 0;
|
|
|
+ io_request->RaidContext.regLockLength = 0;
|
|
|
+ io_request->RaidContext.RAIDFlags =
|
|
|
+ MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
|
|
|
+ MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
|
|
|
+ cmd->request_desc->SCSIIO.RequestFlags =
|
|
|
+ (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
|
|
|
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+ } else {
|
|
|
+ io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
|
|
|
+ io_request->DevHandle = device_id;
|
|
|
+ cmd->request_desc->SCSIIO.RequestFlags =
|
|
|
+ (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
|
|
|
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+ }
|
|
|
+ io_request->RaidContext.VirtualDiskTgtId = device_id;
|
|
|
+ io_request->LUN[0] = scmd->device->lun;
|
|
|
+ io_request->DataLength = scsi_bufflen(scmd);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_build_io_fusion - Prepares IOs to devices
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @scp: SCSI command
|
|
|
+ * @cmd: Command to be prepared
|
|
|
+ *
|
|
|
+ * Invokes helper functions to prepare request frames
|
|
|
+ * and sets flags appropriate for IO/Non-IO cmd
|
|
|
+ */
|
|
|
+int
|
|
|
+megasas_build_io_fusion(struct megasas_instance *instance,
|
|
|
+ struct scsi_cmnd *scp,
|
|
|
+ struct megasas_cmd_fusion *cmd)
|
|
|
+{
|
|
|
+ u32 device_id, sge_count;
|
|
|
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
|
|
|
+
|
|
|
+ device_id = MEGASAS_DEV_INDEX(instance, scp);
|
|
|
+
|
|
|
+ /* Zero out some fields so they don't get reused */
|
|
|
+ io_request->LUN[0] = 0;
|
|
|
+ io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
|
|
|
+ io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
|
|
|
+ io_request->EEDPFlags = 0;
|
|
|
+ io_request->Control = 0;
|
|
|
+ io_request->EEDPBlockSize = 0;
|
|
|
+ io_request->IoFlags = 0;
|
|
|
+ io_request->RaidContext.RAIDFlags = 0;
|
|
|
+
|
|
|
+ memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
|
|
|
+ /*
|
|
|
+ * Just the CDB length,rest of the Flags are zero
|
|
|
+ * This will be modified for FP in build_ldio_fusion
|
|
|
+ */
|
|
|
+ io_request->IoFlags = scp->cmd_len;
|
|
|
+
|
|
|
+ if (megasas_is_ldio(scp))
|
|
|
+ megasas_build_ldio_fusion(instance, scp, cmd);
|
|
|
+ else
|
|
|
+ megasas_build_dcdb_fusion(instance, scp, cmd);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Construct SGL
|
|
|
+ */
|
|
|
+
|
|
|
+ sge_count =
|
|
|
+ megasas_make_sgl_fusion(instance, scp,
|
|
|
+ (struct MPI25_IEEE_SGE_CHAIN64 *)
|
|
|
+ &io_request->SGL, cmd);
|
|
|
+
|
|
|
+ if (sge_count > instance->max_num_sge) {
|
|
|
+ printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
|
|
|
+ "max (0x%x) allowed\n", sge_count,
|
|
|
+ instance->max_num_sge);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ io_request->RaidContext.numSGE = sge_count;
|
|
|
+
|
|
|
+ io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
|
|
|
+
|
|
|
+ if (scp->sc_data_direction == PCI_DMA_TODEVICE)
|
|
|
+ io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
|
|
|
+ else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
|
|
|
+ io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
|
|
|
+
|
|
|
+ io_request->SGLOffset0 =
|
|
|
+ offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
|
|
|
+
|
|
|
+ io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
|
|
|
+ io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
|
|
|
+
|
|
|
+ cmd->scmd = scp;
|
|
|
+ scp->SCp.ptr = (char *)cmd;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+union MEGASAS_REQUEST_DESCRIPTOR_UNION *
|
|
|
+megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
|
|
|
+{
|
|
|
+ u8 *p;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+
|
|
|
+ if (index >= instance->max_fw_cmds) {
|
|
|
+ printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
|
|
|
+ "descriptor\n", index);
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+ p = fusion->req_frames_desc
|
|
|
+ +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
|
|
|
+
|
|
|
+ return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_build_and_issue_cmd_fusion -Main routine for building and
|
|
|
+ * issuing non IOCTL cmd
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @scmd: pointer to scsi cmd from OS
|
|
|
+ */
|
|
|
+static u32
|
|
|
+megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
|
|
|
+ struct scsi_cmnd *scmd)
|
|
|
+{
|
|
|
+ struct megasas_cmd_fusion *cmd;
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ u32 index;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ cmd = megasas_get_cmd_fusion(instance);
|
|
|
+ if (!cmd)
|
|
|
+ return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
+
|
|
|
+ index = cmd->index;
|
|
|
+
|
|
|
+ req_desc = megasas_get_request_descriptor(instance, index-1);
|
|
|
+ if (!req_desc)
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ req_desc->Words = 0;
|
|
|
+ cmd->request_desc = req_desc;
|
|
|
+ cmd->request_desc->Words = 0;
|
|
|
+
|
|
|
+ if (megasas_build_io_fusion(instance, scmd, cmd)) {
|
|
|
+ megasas_return_cmd_fusion(instance, cmd);
|
|
|
+ printk(KERN_ERR "megasas: Error building command.\n");
|
|
|
+ cmd->request_desc = NULL;
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ req_desc = cmd->request_desc;
|
|
|
+ req_desc->SCSIIO.SMID = index;
|
|
|
+
|
|
|
+ if (cmd->io_request->ChainOffset != 0 &&
|
|
|
+ cmd->io_request->ChainOffset != 0xF)
|
|
|
+ printk(KERN_ERR "megasas: The chain offset value is not "
|
|
|
+ "correct : %x\n", cmd->io_request->ChainOffset);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Issue the command to the FW
|
|
|
+ */
|
|
|
+ atomic_inc(&instance->fw_outstanding);
|
|
|
+
|
|
|
+ instance->instancet->fire_cmd(instance,
|
|
|
+ req_desc->u.low, req_desc->u.high,
|
|
|
+ instance->reg_set);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * complete_cmd_fusion - Completes command
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * Completes all commands that is in reply descriptor queue
|
|
|
+ */
|
|
|
+int
|
|
|
+complete_cmd_fusion(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ union MPI2_REPLY_DESCRIPTORS_UNION *desc;
|
|
|
+ struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
|
|
|
+ struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct megasas_cmd *cmd_mfi;
|
|
|
+ struct megasas_cmd_fusion *cmd_fusion;
|
|
|
+ u16 smid, num_completed;
|
|
|
+ u8 reply_descript_type, arm;
|
|
|
+ u32 status, extStatus, device_id;
|
|
|
+ union desc_value d_val;
|
|
|
+ struct LD_LOAD_BALANCE_INFO *lbinfo;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
|
|
|
+ return IRQ_HANDLED;
|
|
|
+
|
|
|
+ desc = fusion->reply_frames_desc;
|
|
|
+ desc += fusion->last_reply_idx;
|
|
|
+
|
|
|
+ reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
|
|
|
+
|
|
|
+ d_val.word = desc->Words;
|
|
|
+
|
|
|
+ reply_descript_type = reply_desc->ReplyFlags &
|
|
|
+ MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
|
|
|
+
|
|
|
+ if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
|
|
|
+ return IRQ_NONE;
|
|
|
+
|
|
|
+ d_val.word = desc->Words;
|
|
|
+
|
|
|
+ num_completed = 0;
|
|
|
+
|
|
|
+ while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
|
|
|
+ smid = reply_desc->SMID;
|
|
|
+
|
|
|
+ cmd_fusion = fusion->cmd_list[smid - 1];
|
|
|
+
|
|
|
+ scsi_io_req =
|
|
|
+ (struct MPI2_RAID_SCSI_IO_REQUEST *)
|
|
|
+ cmd_fusion->io_request;
|
|
|
+
|
|
|
+ if (cmd_fusion->scmd)
|
|
|
+ cmd_fusion->scmd->SCp.ptr = NULL;
|
|
|
+
|
|
|
+ status = scsi_io_req->RaidContext.status;
|
|
|
+ extStatus = scsi_io_req->RaidContext.exStatus;
|
|
|
+
|
|
|
+ switch (scsi_io_req->Function) {
|
|
|
+ case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
|
|
|
+ /* Update load balancing info */
|
|
|
+ device_id = MEGASAS_DEV_INDEX(instance,
|
|
|
+ cmd_fusion->scmd);
|
|
|
+ lbinfo = &fusion->load_balance_info[device_id];
|
|
|
+ if (cmd_fusion->scmd->SCp.Status &
|
|
|
+ MEGASAS_LOAD_BALANCE_FLAG) {
|
|
|
+ arm = lbinfo->raid1DevHandle[0] ==
|
|
|
+ cmd_fusion->io_request->DevHandle ? 0 :
|
|
|
+ 1;
|
|
|
+ atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
|
|
|
+ cmd_fusion->scmd->SCp.Status &=
|
|
|
+ ~MEGASAS_LOAD_BALANCE_FLAG;
|
|
|
+ }
|
|
|
+ if (reply_descript_type ==
|
|
|
+ MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
|
|
|
+ if (megasas_dbg_lvl == 5)
|
|
|
+ printk(KERN_ERR "\nmegasas: FAST Path "
|
|
|
+ "IO Success\n");
|
|
|
+ }
|
|
|
+ /* Fall thru and complete IO */
|
|
|
+ case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
|
|
|
+ /* Map the FW Cmd Status */
|
|
|
+ map_cmd_status(cmd_fusion, status, extStatus);
|
|
|
+ scsi_dma_unmap(cmd_fusion->scmd);
|
|
|
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
|
|
|
+ scsi_io_req->RaidContext.status = 0;
|
|
|
+ scsi_io_req->RaidContext.exStatus = 0;
|
|
|
+ megasas_return_cmd_fusion(instance, cmd_fusion);
|
|
|
+ atomic_dec(&instance->fw_outstanding);
|
|
|
+
|
|
|
+ break;
|
|
|
+ case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
|
|
|
+ cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
|
|
|
+ megasas_complete_cmd(instance, cmd_mfi, DID_OK);
|
|
|
+ cmd_fusion->flags = 0;
|
|
|
+ megasas_return_cmd_fusion(instance, cmd_fusion);
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ fusion->last_reply_idx++;
|
|
|
+ if (fusion->last_reply_idx >= fusion->reply_q_depth)
|
|
|
+ fusion->last_reply_idx = 0;
|
|
|
+
|
|
|
+ desc->Words = ULLONG_MAX;
|
|
|
+ num_completed++;
|
|
|
+
|
|
|
+ /* Get the next reply descriptor */
|
|
|
+ if (!fusion->last_reply_idx)
|
|
|
+ desc = fusion->reply_frames_desc;
|
|
|
+ else
|
|
|
+ desc++;
|
|
|
+
|
|
|
+ reply_desc =
|
|
|
+ (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
|
|
|
+
|
|
|
+ d_val.word = desc->Words;
|
|
|
+
|
|
|
+ reply_descript_type = reply_desc->ReplyFlags &
|
|
|
+ MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
|
|
|
+
|
|
|
+ if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!num_completed)
|
|
|
+ return IRQ_NONE;
|
|
|
+
|
|
|
+ wmb();
|
|
|
+ writel(fusion->last_reply_idx,
|
|
|
+ &instance->reg_set->reply_post_host_index);
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_complete_cmd_dpc_fusion - Completes command
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ *
|
|
|
+ * Tasklet to complete cmds
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
|
|
|
+{
|
|
|
+ struct megasas_instance *instance =
|
|
|
+ (struct megasas_instance *)instance_addr;
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ /* If we have already declared adapter dead, donot complete cmds */
|
|
|
+ spin_lock_irqsave(&instance->hba_lock, flags);
|
|
|
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
|
|
|
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ spin_unlock_irqrestore(&instance->hba_lock, flags);
|
|
|
+
|
|
|
+ spin_lock_irqsave(&instance->completion_lock, flags);
|
|
|
+ complete_cmd_fusion(instance);
|
|
|
+ spin_unlock_irqrestore(&instance->completion_lock, flags);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_isr_fusion - isr entry point
|
|
|
+ */
|
|
|
+irqreturn_t megasas_isr_fusion(int irq, void *devp)
|
|
|
+{
|
|
|
+ struct megasas_instance *instance = (struct megasas_instance *)devp;
|
|
|
+ u32 mfiStatus, fw_state;
|
|
|
+
|
|
|
+ if (!instance->msi_flag) {
|
|
|
+ mfiStatus = instance->instancet->clear_intr(instance->reg_set);
|
|
|
+ if (!mfiStatus)
|
|
|
+ return IRQ_NONE;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* If we are resetting, bail */
|
|
|
+ if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
|
|
|
+ return IRQ_HANDLED;
|
|
|
+
|
|
|
+ if (!complete_cmd_fusion(instance)) {
|
|
|
+ /* If we didn't complete any commands, check for FW fault */
|
|
|
+ fw_state = instance->instancet->read_fw_status_reg(
|
|
|
+ instance->reg_set) & MFI_STATE_MASK;
|
|
|
+ if (fw_state == MFI_STATE_FAULT)
|
|
|
+ schedule_work(&instance->work_init);
|
|
|
+ }
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * mfi_cmd: megasas_cmd pointer
|
|
|
+ *
|
|
|
+ */
|
|
|
+u8
|
|
|
+build_mpt_mfi_pass_thru(struct megasas_instance *instance,
|
|
|
+ struct megasas_cmd *mfi_cmd)
|
|
|
+{
|
|
|
+ struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
|
|
|
+ struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
|
|
|
+ struct megasas_cmd_fusion *cmd;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
|
|
|
+
|
|
|
+ cmd = megasas_get_cmd_fusion(instance);
|
|
|
+ if (!cmd)
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ /* Save the smid. To be used for returning the cmd */
|
|
|
+ mfi_cmd->context.smid = cmd->index;
|
|
|
+
|
|
|
+ cmd->sync_cmd_idx = mfi_cmd->index;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * For cmds where the flag is set, store the flag and check
|
|
|
+ * on completion. For cmds with this flag, don't call
|
|
|
+ * megasas_complete_cmd
|
|
|
+ */
|
|
|
+
|
|
|
+ if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
|
|
|
+ cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+ io_req = cmd->io_request;
|
|
|
+ mpi25_ieee_chain =
|
|
|
+ (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
|
|
|
+
|
|
|
+ io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
|
|
|
+ io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
|
|
|
+ SGL) / 4;
|
|
|
+ io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
|
|
|
+
|
|
|
+ mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr;
|
|
|
+
|
|
|
+ mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
|
|
|
+ MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
|
|
|
+
|
|
|
+ mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @cmd: mfi cmd to build
|
|
|
+ *
|
|
|
+ */
|
|
|
+union MEGASAS_REQUEST_DESCRIPTOR_UNION *
|
|
|
+build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
|
|
|
+{
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ u16 index;
|
|
|
+
|
|
|
+ if (build_mpt_mfi_pass_thru(instance, cmd)) {
|
|
|
+ printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ index = cmd->context.smid;
|
|
|
+
|
|
|
+ req_desc = megasas_get_request_descriptor(instance, index - 1);
|
|
|
+
|
|
|
+ if (!req_desc)
|
|
|
+ return NULL;
|
|
|
+
|
|
|
+ req_desc->Words = 0;
|
|
|
+ req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
|
|
|
+ MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
|
|
|
+
|
|
|
+ req_desc->SCSIIO.SMID = index;
|
|
|
+
|
|
|
+ return req_desc;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
|
|
|
+ * @instance: Adapter soft state
|
|
|
+ * @cmd: mfi cmd pointer
|
|
|
+ *
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_issue_dcmd_fusion(struct megasas_instance *instance,
|
|
|
+ struct megasas_cmd *cmd)
|
|
|
+{
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ union desc_value d_val;
|
|
|
+
|
|
|
+ req_desc = build_mpt_cmd(instance, cmd);
|
|
|
+ if (!req_desc) {
|
|
|
+ printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ d_val.word = req_desc->Words;
|
|
|
+
|
|
|
+ instance->instancet->fire_cmd(instance, req_desc->u.low,
|
|
|
+ req_desc->u.high, instance->reg_set);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_release_fusion - Reverses the FW initialization
|
|
|
+ * @intance: Adapter soft state
|
|
|
+ */
|
|
|
+void
|
|
|
+megasas_release_fusion(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ megasas_free_cmds(instance);
|
|
|
+ megasas_free_cmds_fusion(instance);
|
|
|
+
|
|
|
+ iounmap(instance->reg_set);
|
|
|
+
|
|
|
+ pci_release_selected_regions(instance->pdev, instance->bar);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_read_fw_status_reg_fusion - returns the current FW status value
|
|
|
+ * @regs: MFI register set
|
|
|
+ */
|
|
|
+static u32
|
|
|
+megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
|
|
|
+{
|
|
|
+ return readl(&(regs)->outbound_scratch_pad);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_adp_reset_fusion - For controller reset
|
|
|
+ * @regs: MFI register set
|
|
|
+ */
|
|
|
+static int
|
|
|
+megasas_adp_reset_fusion(struct megasas_instance *instance,
|
|
|
+ struct megasas_register_set __iomem *regs)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * megasas_check_reset_fusion - For controller reset check
|
|
|
+ * @regs: MFI register set
|
|
|
+ */
|
|
|
+static int
|
|
|
+megasas_check_reset_fusion(struct megasas_instance *instance,
|
|
|
+ struct megasas_register_set __iomem *regs)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* This function waits for outstanding commands on fusion to complete */
|
|
|
+int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ int i, outstanding, retval = 0;
|
|
|
+ u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME;
|
|
|
+
|
|
|
+ for (i = 0; i < wait_time; i++) {
|
|
|
+ /* Check if firmware is in fault state */
|
|
|
+ fw_state = instance->instancet->read_fw_status_reg(
|
|
|
+ instance->reg_set) & MFI_STATE_MASK;
|
|
|
+ if (fw_state == MFI_STATE_FAULT) {
|
|
|
+ printk(KERN_WARNING "megasas: Found FW in FAULT state,"
|
|
|
+ " will reset adapter.\n");
|
|
|
+ retval = 1;
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ outstanding = atomic_read(&instance->fw_outstanding);
|
|
|
+ if (!outstanding)
|
|
|
+ goto out;
|
|
|
+
|
|
|
+ if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
|
|
|
+ printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
|
|
|
+ "commands to complete\n", i, outstanding);
|
|
|
+ megasas_complete_cmd_dpc_fusion(
|
|
|
+ (unsigned long)instance);
|
|
|
+ }
|
|
|
+ msleep(1000);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (atomic_read(&instance->fw_outstanding)) {
|
|
|
+ printk("megaraid_sas: pending commands remain after waiting, "
|
|
|
+ "will reset adapter.\n");
|
|
|
+ retval = 1;
|
|
|
+ }
|
|
|
+out:
|
|
|
+ return retval;
|
|
|
+}
|
|
|
+
|
|
|
+void megasas_reset_reply_desc(struct megasas_instance *instance)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
|
|
|
+
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+ fusion->last_reply_idx = 0;
|
|
|
+ reply_desc = fusion->reply_frames_desc;
|
|
|
+ for (i = 0 ; i < fusion->reply_q_depth; i++, reply_desc++)
|
|
|
+ reply_desc->Words = ULLONG_MAX;
|
|
|
+}
|
|
|
+
|
|
|
+/* Core fusion reset function */
|
|
|
+int megasas_reset_fusion(struct Scsi_Host *shost)
|
|
|
+{
|
|
|
+ int retval = SUCCESS, i, j, retry = 0;
|
|
|
+ struct megasas_instance *instance;
|
|
|
+ struct megasas_cmd_fusion *cmd_fusion;
|
|
|
+ struct fusion_context *fusion;
|
|
|
+ struct megasas_cmd *cmd_mfi;
|
|
|
+ union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
|
|
|
+ u32 host_diag, abs_state;
|
|
|
+
|
|
|
+ instance = (struct megasas_instance *)shost->hostdata;
|
|
|
+ fusion = instance->ctrl_context;
|
|
|
+
|
|
|
+ mutex_lock(&instance->reset_mutex);
|
|
|
+ set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
|
|
|
+ instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
|
|
|
+ instance->instancet->disable_intr(instance->reg_set);
|
|
|
+ msleep(1000);
|
|
|
+
|
|
|
+ if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
|
|
|
+ "returning FAILED.\n");
|
|
|
+ retval = FAILED;
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* First try waiting for commands to complete */
|
|
|
+ if (megasas_wait_for_outstanding_fusion(instance)) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: resetting fusion "
|
|
|
+ "adapter.\n");
|
|
|
+ /* Now return commands back to the OS */
|
|
|
+ for (i = 0 ; i < instance->max_fw_cmds; i++) {
|
|
|
+ cmd_fusion = fusion->cmd_list[i];
|
|
|
+ if (cmd_fusion->scmd) {
|
|
|
+ scsi_dma_unmap(cmd_fusion->scmd);
|
|
|
+ cmd_fusion->scmd->result = (DID_RESET << 16);
|
|
|
+ cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
|
|
|
+ megasas_return_cmd_fusion(instance, cmd_fusion);
|
|
|
+ atomic_dec(&instance->fw_outstanding);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (instance->disableOnlineCtrlReset == 1) {
|
|
|
+ /* Reset not supported, kill adapter */
|
|
|
+ printk(KERN_WARNING "megaraid_sas: Reset not supported"
|
|
|
+ ", killing adapter.\n");
|
|
|
+ megaraid_sas_kill_hba(instance);
|
|
|
+ instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
|
|
|
+ retval = FAILED;
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Now try to reset the chip */
|
|
|
+ for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
|
|
|
+ writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_1ST_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_2ND_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_3RD_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_4TH_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_5TH_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+ writel(MPI2_WRSEQ_6TH_KEY_VALUE,
|
|
|
+ &instance->reg_set->fusion_seq_offset);
|
|
|
+
|
|
|
+ /* Check that the diag write enable (DRWE) bit is on */
|
|
|
+ host_diag = readl(&instance->reg_set->fusion_host_diag);
|
|
|
+ while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
|
|
|
+ msleep(100);
|
|
|
+ host_diag =
|
|
|
+ readl(&instance->reg_set->fusion_host_diag);
|
|
|
+ if (retry++ == 100) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: "
|
|
|
+ "Host diag unlock failed!\n");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
|
|
|
+ continue;
|
|
|
+
|
|
|
+ /* Send chip reset command */
|
|
|
+ writel(host_diag | HOST_DIAG_RESET_ADAPTER,
|
|
|
+ &instance->reg_set->fusion_host_diag);
|
|
|
+ msleep(3000);
|
|
|
+
|
|
|
+ /* Make sure reset adapter bit is cleared */
|
|
|
+ host_diag = readl(&instance->reg_set->fusion_host_diag);
|
|
|
+ retry = 0;
|
|
|
+ while (host_diag & HOST_DIAG_RESET_ADAPTER) {
|
|
|
+ msleep(100);
|
|
|
+ host_diag =
|
|
|
+ readl(&instance->reg_set->fusion_host_diag);
|
|
|
+ if (retry++ == 1000) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: "
|
|
|
+ "Diag reset adapter never "
|
|
|
+ "cleared!\n");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (host_diag & HOST_DIAG_RESET_ADAPTER)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ abs_state =
|
|
|
+ instance->instancet->read_fw_status_reg(
|
|
|
+ instance->reg_set);
|
|
|
+ retry = 0;
|
|
|
+
|
|
|
+ while ((abs_state <= MFI_STATE_FW_INIT) &&
|
|
|
+ (retry++ < 1000)) {
|
|
|
+ msleep(100);
|
|
|
+ abs_state =
|
|
|
+ instance->instancet->read_fw_status_reg(
|
|
|
+ instance->reg_set);
|
|
|
+ }
|
|
|
+ if (abs_state <= MFI_STATE_FW_INIT) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: firmware "
|
|
|
+ "state < MFI_STATE_FW_INIT, state = "
|
|
|
+ "0x%x\n", abs_state);
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Wait for FW to become ready */
|
|
|
+ if (megasas_transition_to_ready(instance)) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: Failed to "
|
|
|
+ "transition controller to ready.\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ megasas_reset_reply_desc(instance);
|
|
|
+ if (megasas_ioc_init_fusion(instance)) {
|
|
|
+ printk(KERN_WARNING "megaraid_sas: "
|
|
|
+ "megasas_ioc_init_fusion() failed!\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ instance->instancet->enable_intr(instance->reg_set);
|
|
|
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
|
|
|
+
|
|
|
+ /* Re-fire management commands */
|
|
|
+ for (j = 0 ; j < instance->max_fw_cmds; j++) {
|
|
|
+ cmd_fusion = fusion->cmd_list[j];
|
|
|
+ if (cmd_fusion->sync_cmd_idx !=
|
|
|
+ (u32)ULONG_MAX) {
|
|
|
+ cmd_mfi =
|
|
|
+ instance->
|
|
|
+ cmd_list[cmd_fusion->sync_cmd_idx];
|
|
|
+ if (cmd_mfi->frame->dcmd.opcode ==
|
|
|
+ MR_DCMD_LD_MAP_GET_INFO) {
|
|
|
+ megasas_return_cmd(instance,
|
|
|
+ cmd_mfi);
|
|
|
+ megasas_return_cmd_fusion(
|
|
|
+ instance, cmd_fusion);
|
|
|
+ } else {
|
|
|
+ req_desc =
|
|
|
+ megasas_get_request_descriptor(
|
|
|
+ instance,
|
|
|
+ cmd_mfi->context.smid
|
|
|
+ -1);
|
|
|
+ if (!req_desc)
|
|
|
+ printk(KERN_WARNING
|
|
|
+ "req_desc NULL"
|
|
|
+ "\n");
|
|
|
+ else {
|
|
|
+ instance->instancet->
|
|
|
+ fire_cmd(instance,
|
|
|
+ req_desc->
|
|
|
+ u.low,
|
|
|
+ req_desc->
|
|
|
+ u.high,
|
|
|
+ instance->
|
|
|
+ reg_set);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Reset load balance info */
|
|
|
+ memset(fusion->load_balance_info, 0,
|
|
|
+ sizeof(struct LD_LOAD_BALANCE_INFO)
|
|
|
+ *MAX_LOGICAL_DRIVES);
|
|
|
+
|
|
|
+ if (!megasas_get_map_info(instance))
|
|
|
+ megasas_sync_map_info(instance);
|
|
|
+
|
|
|
+ /* Adapter reset completed successfully */
|
|
|
+ printk(KERN_WARNING "megaraid_sas: Reset "
|
|
|
+ "successful.\n");
|
|
|
+ retval = SUCCESS;
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+ /* Reset failed, kill the adapter */
|
|
|
+ printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
|
|
|
+ "adapter.\n");
|
|
|
+ megaraid_sas_kill_hba(instance);
|
|
|
+ retval = FAILED;
|
|
|
+ } else {
|
|
|
+ instance->instancet->enable_intr(instance->reg_set);
|
|
|
+ instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
|
|
|
+ }
|
|
|
+out:
|
|
|
+ clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
|
|
|
+ mutex_unlock(&instance->reset_mutex);
|
|
|
+ return retval;
|
|
|
+}
|
|
|
+
|
|
|
+/* Fusion OCR work queue */
|
|
|
+void megasas_fusion_ocr_wq(struct work_struct *work)
|
|
|
+{
|
|
|
+ struct megasas_instance *instance =
|
|
|
+ container_of(work, struct megasas_instance, work_init);
|
|
|
+
|
|
|
+ megasas_reset_fusion(instance->host);
|
|
|
+}
|
|
|
+
|
|
|
+struct megasas_instance_template megasas_instance_template_fusion = {
|
|
|
+ .fire_cmd = megasas_fire_cmd_fusion,
|
|
|
+ .enable_intr = megasas_enable_intr_fusion,
|
|
|
+ .disable_intr = megasas_disable_intr_fusion,
|
|
|
+ .clear_intr = megasas_clear_intr_fusion,
|
|
|
+ .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
|
|
|
+ .adp_reset = megasas_adp_reset_fusion,
|
|
|
+ .check_reset = megasas_check_reset_fusion,
|
|
|
+ .service_isr = megasas_isr_fusion,
|
|
|
+ .tasklet = megasas_complete_cmd_dpc_fusion,
|
|
|
+ .init_adapter = megasas_init_adapter_fusion,
|
|
|
+ .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
|
|
|
+ .issue_dcmd = megasas_issue_dcmd_fusion,
|
|
|
+};
|
adam radford