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Commit aaea12f7 authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branch 'pci/host-iproc' into next

* pci/host-iproc:
  PCI: iproc: Allow allocation of multiple MSIs
parents 85a8cf8e fc54bae2
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+12 −7
Original line number Diff line number Diff line
@@ -179,7 +179,7 @@ static struct irq_chip iproc_msi_irq_chip = {

static struct msi_domain_info iproc_msi_domain_info = {
	.flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
		MSI_FLAG_PCI_MSIX,
		MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX,
	.chip = &iproc_msi_irq_chip,
};

@@ -237,7 +237,7 @@ static void iproc_msi_irq_compose_msi_msg(struct irq_data *data,
	addr = msi->msi_addr + iproc_msi_addr_offset(msi, data->hwirq);
	msg->address_lo = lower_32_bits(addr);
	msg->address_hi = upper_32_bits(addr);
	msg->data = data->hwirq;
	msg->data = data->hwirq << 5;
}

static struct irq_chip iproc_msi_bottom_irq_chip = {
@@ -251,7 +251,7 @@ static int iproc_msi_irq_domain_alloc(struct irq_domain *domain,
				      void *args)
{
	struct iproc_msi *msi = domain->host_data;
	int hwirq;
	int hwirq, i;

	mutex_lock(&msi->bitmap_lock);

@@ -267,10 +267,14 @@ static int iproc_msi_irq_domain_alloc(struct irq_domain *domain,

	mutex_unlock(&msi->bitmap_lock);

	irq_domain_set_info(domain, virq, hwirq, &iproc_msi_bottom_irq_chip,
			    domain->host_data, handle_simple_irq, NULL, NULL);
	for (i = 0; i < nr_irqs; i++) {
		irq_domain_set_info(domain, virq + i, hwirq + i,
				    &iproc_msi_bottom_irq_chip,
				    domain->host_data, handle_simple_irq,
				    NULL, NULL);
	}

	return 0;
	return hwirq;
}

static void iproc_msi_irq_domain_free(struct irq_domain *domain,
@@ -302,7 +306,8 @@ static inline u32 decode_msi_hwirq(struct iproc_msi *msi, u32 eq, u32 head)

	offs = iproc_msi_eq_offset(msi, eq) + head * sizeof(u32);
	msg = (u32 *)(msi->eq_cpu + offs);
	hwirq = *msg & IPROC_MSI_EQ_MASK;
	hwirq = readl(msg);
	hwirq = (hwirq >> 5) + (hwirq & 0x1f);

	/*
	 * Since we have multiple hwirq mapped to a single MSI vector,