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| author | Bjorn Helgaas <bhelgaas@google.com> | 2017-11-14 12:11:32 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-11-14 12:11:32 -0600 |
| commit | aaea12f7fe4c309c8cfa9040cbb3cb02feae0b4d (patch) | |
| tree | 8027a0f4e456d99314dcd6064c846ddc1a3007b9 | |
| parent | 85a8cf8ebdedc6300c52a1c8f416dc670ab4df6f (diff) | |
| parent | fc54bae288182056e9d2431fb1018bf5229ea52d (diff) | |
| download | lwn-aaea12f7fe4c309c8cfa9040cbb3cb02feae0b4d.tar.gz lwn-aaea12f7fe4c309c8cfa9040cbb3cb02feae0b4d.zip | |
Merge branch 'pci/host-iproc' into next
* pci/host-iproc:
PCI: iproc: Allow allocation of multiple MSIs
| -rw-r--r-- | drivers/pci/host/pcie-iproc-msi.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/host/pcie-iproc-msi.c index 2d0f535a2f69..990fc906d73d 100644 --- a/drivers/pci/host/pcie-iproc-msi.c +++ b/drivers/pci/host/pcie-iproc-msi.c @@ -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, |