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scsi: megaraid_sas: 32 bit descriptor fire cmd optimization
No functional change. Code refactor. megasas_fire_cmd_fusion can always use 32 bit descriptor write for ventura. No need to pass extra flag. Only IOC INIT required 64 bit Descriptor write. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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8bf7c65d37
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45b8a35eed
1 changed files with 33 additions and 32 deletions
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@ -188,40 +188,35 @@ inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
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/**
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* megasas_fire_cmd_fusion - Sends command to the FW
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* @instance: Adapter soft state
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* @req_desc: 32bit or 64bit Request descriptor
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*
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* Perform PCI Write. Ventura supports 32 bit Descriptor.
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* Prior to Ventura (12G) MR controller supports 64 bit Descriptor.
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*/
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static void
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megasas_fire_cmd_fusion(struct megasas_instance *instance,
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union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, bool is_32bit)
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union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
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{
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struct megasas_register_set __iomem *regs = instance->reg_set;
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unsigned long flags;
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if (is_32bit)
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if (instance->is_ventura)
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writel(le32_to_cpu(req_desc->u.low),
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&(regs)->inbound_single_queue_port);
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else if (instance->is_ventura) {
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&instance->reg_set->inbound_single_queue_port);
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else {
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#if defined(writeq) && defined(CONFIG_64BIT)
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u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
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le32_to_cpu(req_desc->u.low));
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writeq(req_data, &instance->reg_set->inbound_low_queue_port);
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#else
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unsigned long flags;
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spin_lock_irqsave(&instance->hba_lock, flags);
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writel(le32_to_cpu(req_desc->u.low),
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&(regs)->inbound_low_queue_port);
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&instance->reg_set->inbound_low_queue_port);
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writel(le32_to_cpu(req_desc->u.high),
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&(regs)->inbound_high_queue_port);
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&instance->reg_set->inbound_high_queue_port);
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mmiowb();
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spin_unlock_irqrestore(&instance->hba_lock, flags);
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} else {
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#if defined(writeq) && defined(CONFIG_64BIT)
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u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
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le32_to_cpu(req_desc->u.low));
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writeq(req_data, &instance->reg_set->inbound_low_queue_port);
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#else
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spin_lock_irqsave(&instance->hba_lock, flags);
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writel(le32_to_cpu(req_desc->u.low),
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&instance->reg_set->inbound_low_queue_port);
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writel(le32_to_cpu(req_desc->u.high),
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&instance->reg_set->inbound_high_queue_port);
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mmiowb();
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spin_unlock_irqrestore(&instance->hba_lock, flags);
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#endif
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}
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}
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@ -771,6 +766,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
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const char *sys_info;
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MFI_CAPABILITIES *drv_ops;
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u32 scratch_pad_2;
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unsigned long flags;
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fusion = instance->ctrl_context;
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@ -897,7 +893,14 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
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break;
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}
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megasas_fire_cmd_fusion(instance, &req_desc, false);
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/* For Ventura also IOC INIT required 64 bit Descriptor write. */
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spin_lock_irqsave(&instance->hba_lock, flags);
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writel(le32_to_cpu(req_desc.u.low),
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&instance->reg_set->inbound_low_queue_port);
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writel(le32_to_cpu(req_desc.u.high),
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&instance->reg_set->inbound_high_queue_port);
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mmiowb();
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spin_unlock_irqrestore(&instance->hba_lock, flags);
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wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
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@ -2577,11 +2580,10 @@ megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
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* Issue the command to the FW
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*/
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megasas_fire_cmd_fusion(instance, req_desc, instance->is_ventura);
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megasas_fire_cmd_fusion(instance, req_desc);
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if (r1_cmd)
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megasas_fire_cmd_fusion(instance, r1_cmd->request_desc,
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instance->is_ventura);
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megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
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return 0;
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@ -3001,7 +3003,7 @@ megasas_issue_dcmd_fusion(struct megasas_instance *instance,
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return DCMD_NOT_FIRED;
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}
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megasas_fire_cmd_fusion(instance, req_desc, instance->is_ventura);
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megasas_fire_cmd_fusion(instance, req_desc);
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return DCMD_SUCCESS;
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}
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@ -3294,8 +3296,7 @@ void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
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cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
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&& !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
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if (refire_cmd)
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megasas_fire_cmd_fusion(instance, req_desc,
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instance->is_ventura);
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megasas_fire_cmd_fusion(instance, req_desc);
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else
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megasas_return_cmd(instance, cmd_mfi);
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}
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@ -3474,7 +3475,7 @@ megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
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mr_request->tmReqFlags.isTMForLD = 1;
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init_completion(&cmd_fusion->done);
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megasas_fire_cmd_fusion(instance, req_desc, instance->is_ventura);
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megasas_fire_cmd_fusion(instance, req_desc);
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timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
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