megaraid_sas : Add separate function for setting up IRQs
This patch will create separate functions for- 1) setting up IRQs for MSI-x interrupts 2) setting up IRQs for legacy interrupts 3) freeing up IRQs. and enable interrupts after adapter's initialization. The reason behind initialising adapter earlier is: by that time firmware is operational and can send interrupts, so better to use interrupt based interface to send internal DCMD to firmware instead of using polling method, since MFI frames' pool size is reduced and polling method does not free up MFI frame for fusion adapters, so sending more DCMDs with polled method may cause MFI frames's pool go out of frames and end up failing DCMD. Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com> Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Sumit.Saxena@avagotech.com
James Bottomley
Родитель
ea47ebf15d
Коммит
d3557fc8be
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@ -4414,6 +4414,107 @@ fail_alloc_cmds:
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return 1;
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}
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/*
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* megasas_setup_irqs_msix - register legacy interrupts.
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* @instance: Adapter soft state
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*
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* Do not enable interrupt, only setup ISRs.
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*
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* Return 0 on success.
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*/
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static int
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megasas_setup_irqs_ioapic(struct megasas_instance *instance)
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{
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struct pci_dev *pdev;
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pdev = instance->pdev;
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instance->irq_context[0].instance = instance;
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instance->irq_context[0].MSIxIndex = 0;
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if (request_irq(pdev->irq, instance->instancet->service_isr,
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IRQF_SHARED, "megasas", &instance->irq_context[0])) {
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dev_err(&instance->pdev->dev,
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"Failed to register IRQ from %s %d\n",
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__func__, __LINE__);
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return -1;
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}
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return 0;
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}
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/**
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* megasas_setup_irqs_msix - register MSI-x interrupts.
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* @instance: Adapter soft state
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* @is_probe: Driver probe check
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*
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* Do not enable interrupt, only setup ISRs.
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*
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* Return 0 on success.
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*/
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static int
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megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
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{
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int i, j, cpu;
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struct pci_dev *pdev;
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pdev = instance->pdev;
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/* Try MSI-x */
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cpu = cpumask_first(cpu_online_mask);
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for (i = 0; i < instance->msix_vectors; i++) {
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instance->irq_context[i].instance = instance;
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instance->irq_context[i].MSIxIndex = i;
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if (request_irq(instance->msixentry[i].vector,
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instance->instancet->service_isr, 0, "megasas",
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&instance->irq_context[i])) {
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dev_err(&instance->pdev->dev,
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"Failed to register IRQ for vector %d.\n", i);
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for (j = 0; j < i; j++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[j].vector, NULL);
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free_irq(instance->msixentry[j].vector,
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&instance->irq_context[j]);
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}
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/* Retry irq register for IO_APIC*/
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instance->msix_vectors = 0;
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if (is_probe)
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return megasas_setup_irqs_ioapic(instance);
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else
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return -1;
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}
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if (smp_affinity_enable) {
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if (irq_set_affinity_hint(instance->msixentry[i].vector,
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get_cpu_mask(cpu)))
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dev_err(&instance->pdev->dev,
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"Failed to set affinity hint"
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" for cpu %d\n", cpu);
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cpu = cpumask_next(cpu, cpu_online_mask);
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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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* megasas_destroy_irqs- unregister interrupts.
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* @instance: Adapter soft state
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* return: void
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*/
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static void
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megasas_destroy_irqs(struct megasas_instance *instance) {
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int i;
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if (instance->msix_vectors)
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for (i = 0; i < instance->msix_vectors; i++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[i].vector, NULL);
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free_irq(instance->msixentry[i].vector,
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&instance->irq_context[i]);
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}
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else
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free_irq(instance->pdev->irq, &instance->irq_context[0]);
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}
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/**
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* megasas_init_fw - Initializes the FW
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* @instance: Adapter soft state
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@ -4552,11 +4653,16 @@ static int megasas_init_fw(struct megasas_instance *instance)
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else
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instance->msix_vectors = 0;
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dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
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"<%d> MSIX vector,Online CPUs: <%d>,"
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"Current MSIX <%d>\n", instance->host->host_no,
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fw_msix_count, (unsigned int)num_online_cpus(),
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instance->msix_vectors);
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dev_info(&instance->pdev->dev,
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"firmware supports msix\t: (%d)", fw_msix_count);
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dev_info(&instance->pdev->dev,
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"current msix/online cpus\t: (%d/%d)\n",
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instance->msix_vectors, (unsigned int)num_online_cpus());
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if (instance->msix_vectors ?
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megasas_setup_irqs_msix(instance, 1) :
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megasas_setup_irqs_ioapic(instance))
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goto fail_setup_irqs;
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}
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instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
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@ -4573,6 +4679,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
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/* Get operational params, sge flags, send init cmd to controller */
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if (instance->instancet->init_adapter(instance))
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goto fail_init_adapter;
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instance->instancet->enable_intr(instance);
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printk(KERN_ERR "megasas: INIT adapter done\n");
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@ -4584,7 +4691,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
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(MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
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if (megasas_get_pd_list(instance) < 0) {
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printk(KERN_ERR "megasas: failed to get PD list\n");
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goto fail_init_adapter;
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goto fail_get_pd_list;
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}
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memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
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@ -4733,7 +4840,14 @@ static int megasas_init_fw(struct megasas_instance *instance)
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return 0;
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fail_get_pd_list:
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instance->instancet->disable_intr(instance);
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fail_init_adapter:
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megasas_destroy_irqs(instance);
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fail_setup_irqs:
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if (instance->msix_vectors)
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pci_disable_msix(instance->pdev);
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instance->msix_vectors = 0;
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fail_ready_state:
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kfree(instance->ctrl_info);
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instance->ctrl_info = NULL;
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@ -5106,7 +5220,7 @@ fail_set_dma_mask:
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static int megasas_probe_one(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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int rval, pos, i, j, cpu;
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int rval, pos;
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struct Scsi_Host *host;
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struct megasas_instance *instance;
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u16 control = 0;
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@ -5315,55 +5429,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
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}
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}
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retry_irq_register:
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/*
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* Register IRQ
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*/
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if (instance->msix_vectors) {
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cpu = cpumask_first(cpu_online_mask);
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for (i = 0; i < instance->msix_vectors; i++) {
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instance->irq_context[i].instance = instance;
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instance->irq_context[i].MSIxIndex = i;
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if (request_irq(instance->msixentry[i].vector,
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instance->instancet->service_isr, 0,
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"megasas",
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&instance->irq_context[i])) {
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printk(KERN_DEBUG "megasas: Failed to "
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"register IRQ for vector %d.\n", i);
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for (j = 0; j < i; j++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[j].vector, NULL);
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free_irq(
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instance->msixentry[j].vector,
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&instance->irq_context[j]);
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}
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/* Retry irq register for IO_APIC */
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instance->msix_vectors = 0;
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goto retry_irq_register;
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}
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if (smp_affinity_enable) {
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if (irq_set_affinity_hint(instance->msixentry[i].vector,
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get_cpu_mask(cpu)))
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dev_err(&instance->pdev->dev,
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"Error setting affinity hint "
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"for cpu %d\n", cpu);
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cpu = cpumask_next(cpu, cpu_online_mask);
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}
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}
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} else {
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instance->irq_context[0].instance = instance;
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instance->irq_context[0].MSIxIndex = 0;
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if (request_irq(pdev->irq, instance->instancet->service_isr,
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IRQF_SHARED, "megasas",
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&instance->irq_context[0])) {
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printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
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goto fail_irq;
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}
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}
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instance->instancet->enable_intr(instance);
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/*
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* Store instance in PCI softstate
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*/
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@ -5410,17 +5475,8 @@ retry_irq_register:
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megasas_mgmt_info.max_index--;
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instance->instancet->disable_intr(instance);
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if (instance->msix_vectors)
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for (i = 0; i < instance->msix_vectors; i++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[i].vector, NULL);
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free_irq(instance->msixentry[i].vector,
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&instance->irq_context[i]);
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}
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else
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free_irq(instance->pdev->irq, &instance->irq_context[0]);
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fail_irq:
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megasas_destroy_irqs(instance);
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if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
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(instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
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(instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
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@ -5428,9 +5484,9 @@ fail_irq:
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megasas_release_fusion(instance);
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else
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megasas_release_mfi(instance);
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fail_init_mfi:
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if (instance->msix_vectors)
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pci_disable_msix(instance->pdev);
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fail_init_mfi:
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fail_alloc_dma_buf:
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if (instance->evt_detail)
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pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
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@ -5558,7 +5614,6 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct Scsi_Host *host;
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struct megasas_instance *instance;
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int i;
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instance = pci_get_drvdata(pdev);
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host = instance->host;
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@ -5583,16 +5638,8 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state)
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pci_set_drvdata(instance->pdev, instance);
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instance->instancet->disable_intr(instance);
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if (instance->msix_vectors)
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for (i = 0; i < instance->msix_vectors; i++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[i].vector, NULL);
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free_irq(instance->msixentry[i].vector,
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&instance->irq_context[i]);
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}
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else
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free_irq(instance->pdev->irq, &instance->irq_context[0]);
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megasas_destroy_irqs(instance);
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if (instance->msix_vectors)
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pci_disable_msix(instance->pdev);
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@ -5611,7 +5658,7 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state)
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static int
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megasas_resume(struct pci_dev *pdev)
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{
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int rval, i, j, cpu;
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int rval;
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struct Scsi_Host *host;
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struct megasas_instance *instance;
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@ -5681,50 +5728,10 @@ megasas_resume(struct pci_dev *pdev)
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tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
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(unsigned long)instance);
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/*
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* Register IRQ
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*/
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if (instance->msix_vectors) {
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cpu = cpumask_first(cpu_online_mask);
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for (i = 0 ; i < instance->msix_vectors; i++) {
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instance->irq_context[i].instance = instance;
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instance->irq_context[i].MSIxIndex = i;
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if (request_irq(instance->msixentry[i].vector,
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instance->instancet->service_isr, 0,
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"megasas",
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&instance->irq_context[i])) {
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printk(KERN_DEBUG "megasas: Failed to "
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"register IRQ for vector %d.\n", i);
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for (j = 0; j < i; j++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[j].vector, NULL);
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free_irq(
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instance->msixentry[j].vector,
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&instance->irq_context[j]);
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}
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goto fail_irq;
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}
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if (smp_affinity_enable) {
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if (irq_set_affinity_hint(instance->msixentry[i].vector,
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get_cpu_mask(cpu)))
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dev_err(&instance->pdev->dev, "Error "
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"setting affinity hint for cpu "
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"%d\n", cpu);
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cpu = cpumask_next(cpu, cpu_online_mask);
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}
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}
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} else {
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instance->irq_context[0].instance = instance;
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instance->irq_context[0].MSIxIndex = 0;
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if (request_irq(pdev->irq, instance->instancet->service_isr,
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IRQF_SHARED, "megasas",
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&instance->irq_context[0])) {
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printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
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goto fail_irq;
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}
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}
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if (instance->msix_vectors ?
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megasas_setup_irqs_msix(instance, 0) :
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megasas_setup_irqs_ioapic(instance))
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goto fail_init_mfi;
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/* Re-launch SR-IOV heartbeat timer */
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if (instance->requestorId) {
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@ -5748,7 +5755,6 @@ megasas_resume(struct pci_dev *pdev)
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return 0;
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fail_irq:
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fail_init_mfi:
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if (instance->evt_detail)
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pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
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@ -5829,16 +5835,8 @@ static void megasas_detach_one(struct pci_dev *pdev)
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instance->instancet->disable_intr(instance);
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if (instance->msix_vectors)
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for (i = 0; i < instance->msix_vectors; i++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[i].vector, NULL);
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free_irq(instance->msixentry[i].vector,
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&instance->irq_context[i]);
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}
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else
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free_irq(instance->pdev->irq, &instance->irq_context[0]);
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megasas_destroy_irqs(instance);
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if (instance->msix_vectors)
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pci_disable_msix(instance->pdev);
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@ -5912,23 +5910,14 @@ static void megasas_detach_one(struct pci_dev *pdev)
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*/
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static void megasas_shutdown(struct pci_dev *pdev)
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{
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int i;
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struct megasas_instance *instance = pci_get_drvdata(pdev);
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instance->unload = 1;
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megasas_flush_cache(instance);
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megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
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instance->instancet->disable_intr(instance);
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if (instance->msix_vectors)
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for (i = 0; i < instance->msix_vectors; i++) {
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if (smp_affinity_enable)
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irq_set_affinity_hint(
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instance->msixentry[i].vector, NULL);
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free_irq(instance->msixentry[i].vector,
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&instance->irq_context[i]);
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}
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else
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free_irq(instance->pdev->irq, &instance->irq_context[0]);
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megasas_destroy_irqs(instance);
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if (instance->msix_vectors)
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pci_disable_msix(instance->pdev);
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}
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