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authorJiang Liu <jiang.liu@linux.intel.com>2015-04-13 14:11:39 +0800
committerThomas Gleixner <tglx@linutronix.de>2015-04-24 15:36:49 +0200
commit7a53a12162cbe5feb66380b96cc794a031a8f39a (patch)
tree8f276752ff1aadd818209b3a0d326d593e3cb57a /drivers/iommu/irq_remapping.c
parent3c3d4f90f6f80cce357ef013baf1327a9b9d5732 (diff)
downloadlinux-7a53a12162cbe5feb66380b96cc794a031a8f39a.tar.bz2
irq_remapping: Clean up unused MSI related code
Now MSI interrupt has been converted to new hierarchical irqdomain interfaces, so remove legacy MSI related code and interfaces. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Yijing Wang <wangyijing@huawei.com> Link: http://lkml.kernel.org/r/1428905519-23704-18-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/iommu/irq_remapping.c')
-rw-r--r--drivers/iommu/irq_remapping.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index d77e3711c2aa..3eaa822c30a9 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -25,9 +25,6 @@ int no_x2apic_optout;
static int disable_irq_remap;
static struct irq_remap_ops *remap_ops;
-static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
-static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
- int index, int sub_handle);
static int set_remapped_irq_affinity(struct irq_data *data,
const struct cpumask *mask,
bool force);
@@ -50,109 +47,6 @@ static void irq_remapping_disable_io_apic(void)
disconnect_bsp_APIC(0);
}
-#ifndef CONFIG_GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
-static unsigned int irq_alloc_hwirqs(int cnt, int node)
-{
- return irq_domain_alloc_irqs(NULL, -1, cnt, node, NULL);
-}
-
-static void irq_free_hwirqs(unsigned int from, int cnt)
-{
- irq_domain_free_irqs(from, cnt);
-}
-#endif
-
-static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
-{
- int ret, sub_handle, nvec_pow2, index = 0;
- unsigned int irq;
- struct msi_desc *msidesc;
-
- msidesc = list_entry(dev->msi_list.next, struct msi_desc, list);
-
- irq = irq_alloc_hwirqs(nvec, dev_to_node(&dev->dev));
- if (irq == 0)
- return -ENOSPC;
-
- nvec_pow2 = __roundup_pow_of_two(nvec);
- for (sub_handle = 0; sub_handle < nvec; sub_handle++) {
- if (!sub_handle) {
- index = msi_alloc_remapped_irq(dev, irq, nvec_pow2);
- if (index < 0) {
- ret = index;
- goto error;
- }
- } else {
- ret = msi_setup_remapped_irq(dev, irq + sub_handle,
- index, sub_handle);
- if (ret < 0)
- goto error;
- }
- ret = setup_msi_irq(dev, msidesc, irq, sub_handle);
- if (ret < 0)
- goto error;
- }
- return 0;
-
-error:
- irq_free_hwirqs(irq, nvec);
-
- /*
- * Restore altered MSI descriptor fields and prevent just destroyed
- * IRQs from tearing down again in default_teardown_msi_irqs()
- */
- msidesc->irq = 0;
-
- return ret;
-}
-
-static int do_setup_msix_irqs(struct pci_dev *dev, int nvec)
-{
- int node, ret, sub_handle, index = 0;
- struct msi_desc *msidesc;
- unsigned int irq;
-
- node = dev_to_node(&dev->dev);
- sub_handle = 0;
-
- list_for_each_entry(msidesc, &dev->msi_list, list) {
-
- irq = irq_alloc_hwirqs(1, node);
- if (irq == 0)
- return -1;
-
- if (sub_handle == 0)
- ret = index = msi_alloc_remapped_irq(dev, irq, nvec);
- else
- ret = msi_setup_remapped_irq(dev, irq, index, sub_handle);
-
- if (ret < 0)
- goto error;
-
- ret = setup_msi_irq(dev, msidesc, irq, 0);
- if (ret < 0)
- goto error;
-
- sub_handle += 1;
- irq += 1;
- }
-
- return 0;
-
-error:
- irq_free_hwirqs(irq, 1);
- return ret;
-}
-
-static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
- int nvec, int type)
-{
- if (type == PCI_CAP_ID_MSI)
- return do_setup_msi_irqs(dev, nvec);
- else
- return do_setup_msix_irqs(dev, nvec);
-}
-
static void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
{
/*
@@ -170,8 +64,6 @@ static void __init irq_remapping_modify_x86_ops(void)
x86_io_apic_ops.set_affinity = set_remapped_irq_affinity;
x86_io_apic_ops.setup_entry = setup_ioapic_remapped_entry;
x86_io_apic_ops.eoi_ioapic_pin = eoi_ioapic_pin_remapped;
- x86_msi.setup_hpet_msi = setup_hpet_msi_remapped;
- x86_msi.compose_msi_msg = compose_remapped_msi_msg;
}
static __init int setup_nointremap(char *str)
@@ -295,49 +187,6 @@ void free_remapped_irq(int irq)
remap_ops->free_irq(irq);
}
-void compose_remapped_msi_msg(struct pci_dev *pdev,
- unsigned int irq, unsigned int dest,
- struct msi_msg *msg, u8 hpet_id)
-{
- struct irq_cfg *cfg = irq_cfg(irq);
-
- if (!irq_remapped(cfg))
- native_compose_msi_msg(pdev, irq, dest, msg, hpet_id);
- else if (remap_ops->compose_msi_msg)
- remap_ops->compose_msi_msg(pdev, irq, dest, msg, hpet_id);
-}
-
-static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
-{
- if (!remap_ops->msi_alloc_irq)
- return -ENODEV;
-
- return remap_ops->msi_alloc_irq(pdev, irq, nvec);
-}
-
-static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
- int index, int sub_handle)
-{
- if (!remap_ops->msi_setup_irq)
- return -ENODEV;
-
- return remap_ops->msi_setup_irq(pdev, irq, index, sub_handle);
-}
-
-int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
-{
- int ret;
-
- if (!remap_ops->alloc_hpet_msi)
- return -ENODEV;
-
- ret = remap_ops->alloc_hpet_msi(irq, id);
- if (ret)
- return -EINVAL;
-
- return default_setup_hpet_msi(irq, id);
-}
-
void panic_if_irq_remap(const char *msg)
{
if (irq_remapping_enabled)