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authorYijing Wang <wangyijing@huawei.com>2014-09-17 13:32:19 +0400
committerJoerg Roedel <jroedel@suse.de>2014-09-25 21:11:47 +0400
commit5fc24d8cb9d43e0db335137051092da03a6845dc (patch)
treec476b207814a1409d74fffe7b0837ef372dc7f9a /drivers/iommu
parentfb3e306515ba6a012364b698b8ca71c337424ed3 (diff)
downloadlinux-5fc24d8cb9d43e0db335137051092da03a6845dc.tar.xz
iommu/irq_remapping: Fix the regression of hpet irq remapping
Commit 71054d8841b4 ("x86, hpet: Introduce x86_msi_ops.setup_hpet_msi") introduced x86_msi_ops.setup_hpet_msi to setup hpet MSI irq when irq remapping enabled. This caused a regression of hpet MSI irq remapping. Original code flow before commit 71054d8841b4: hpet_setup_msi_irq() arch_setup_hpet_msi() setup_hpet_msi_remapped() remap_ops->setup_hpet_msi() alloc_irte() msi_compose_msg() hpet_msi_write() ... Current code flow after commit 71054d8841b4: hpet_setup_msi_irq() x86_msi.setup_hpet_msi() setup_hpet_msi_remapped() intel_setup_hpet_msi() alloc_irte() Currently, we only call alloc_irte() for hpet MSI, but do not composed and wrote its msg... Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c4
-rw-r--r--drivers/iommu/intel_irq_remapping.c4
-rw-r--r--drivers/iommu/irq_remapping.c11
-rw-r--r--drivers/iommu/irq_remapping.h2
4 files changed, 14 insertions, 7 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 8c5216633987..2f4f45d8dbfd 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4233,7 +4233,7 @@ static int msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
return 0;
}
-static int setup_hpet_msi(unsigned int irq, unsigned int id)
+static int alloc_hpet_msi(unsigned int irq, unsigned int id)
{
struct irq_2_irte *irte_info;
struct irq_cfg *cfg;
@@ -4272,6 +4272,6 @@ struct irq_remap_ops amd_iommu_irq_ops = {
.compose_msi_msg = compose_msi_msg,
.msi_alloc_irq = msi_alloc_irq,
.msi_setup_irq = msi_setup_irq,
- .setup_hpet_msi = setup_hpet_msi,
+ .alloc_hpet_msi = alloc_hpet_msi,
};
#endif
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 0df41f6264f5..ef5e5dd1311d 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -1139,7 +1139,7 @@ static int intel_msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
return ret;
}
-static int intel_setup_hpet_msi(unsigned int irq, unsigned int id)
+static int intel_alloc_hpet_msi(unsigned int irq, unsigned int id)
{
int ret = -1;
struct intel_iommu *iommu;
@@ -1170,5 +1170,5 @@ struct irq_remap_ops intel_irq_remap_ops = {
.compose_msi_msg = intel_compose_msi_msg,
.msi_alloc_irq = intel_msi_alloc_irq,
.msi_setup_irq = intel_msi_setup_irq,
- .setup_hpet_msi = intel_setup_hpet_msi,
+ .alloc_hpet_msi = intel_alloc_hpet_msi,
};
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 33c439524080..74a1767c89b5 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -12,6 +12,7 @@
#include <asm/processor.h>
#include <asm/x86_init.h>
#include <asm/apic.h>
+#include <asm/hpet.h>
#include "irq_remapping.h"
@@ -345,10 +346,16 @@ static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
{
- if (!remap_ops || !remap_ops->setup_hpet_msi)
+ int ret;
+
+ if (!remap_ops || !remap_ops->alloc_hpet_msi)
return -ENODEV;
- return remap_ops->setup_hpet_msi(irq, id);
+ 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)
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
index 90c4dae5a46b..fde250f86e60 100644
--- a/drivers/iommu/irq_remapping.h
+++ b/drivers/iommu/irq_remapping.h
@@ -80,7 +80,7 @@ struct irq_remap_ops {
int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
/* Setup interrupt remapping for an HPET MSI */
- int (*setup_hpet_msi)(unsigned int, unsigned int);
+ int (*alloc_hpet_msi)(unsigned int, unsigned int);
};
extern struct irq_remap_ops intel_irq_remap_ops;