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author | Joerg Roedel <joerg.roedel@amd.com> | 2012-06-26 14:46:04 (GMT) |
---|---|---|
committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-09-28 15:43:52 (GMT) |
commit | 6b474b8224cdb473f19e8c925171e608499cc45d (patch) | |
tree | d52191a42b4b9292b1908003245abcf852c6919b | |
parent | d976195c93bce4512e990d170858d20d71c95c45 (diff) | |
download | linux-6b474b8224cdb473f19e8c925171e608499cc45d.tar.xz |
iommu/amd: Add initialization routines for AMD interrupt remapping
Add the six routines required to setup interrupt remapping
with the AMD IOMMU. Also put it all together into the AMD
specific irq_remap_ops.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
-rw-r--r-- | drivers/iommu/amd_iommu.c | 16 | ||||
-rw-r--r-- | drivers/iommu/amd_iommu_init.c | 42 | ||||
-rw-r--r-- | drivers/iommu/amd_iommu_proto.h | 8 | ||||
-rw-r--r-- | drivers/iommu/irq_remapping.h | 1 |
4 files changed, 67 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index aeb890c..33f144f 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -45,6 +45,7 @@ #include "amd_iommu_proto.h" #include "amd_iommu_types.h" +#include "irq_remapping.h" #define CMD_SET_TYPE(cmd, t) ((cmd)->data[1] |= ((t) << 28)) @@ -4226,4 +4227,19 @@ static int setup_hpet_msi(unsigned int irq, unsigned int id) return 0; } +struct irq_remap_ops amd_iommu_irq_ops = { + .supported = amd_iommu_supported, + .prepare = amd_iommu_prepare, + .enable = amd_iommu_enable, + .disable = amd_iommu_disable, + .reenable = amd_iommu_reenable, + .enable_faulting = amd_iommu_enable_faulting, + .setup_ioapic_entry = setup_ioapic_entry, + .set_affinity = set_affinity, + .free_irq = free_irq, + .compose_msi_msg = compose_msi_msg, + .msi_alloc_irq = msi_alloc_irq, + .msi_setup_irq = msi_setup_irq, + .setup_hpet_msi = setup_hpet_msi, +}; #endif diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 68b3305..d536d24 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -34,6 +34,7 @@ #include <asm/x86_init.h> #include <asm/iommu_table.h> #include <asm/io_apic.h> +#include <asm/irq_remapping.h> #include "amd_iommu_proto.h" #include "amd_iommu_types.h" @@ -1897,7 +1898,48 @@ static int __init iommu_go_to_state(enum iommu_init_state state) return ret; } +#ifdef CONFIG_IRQ_REMAP +int __init amd_iommu_prepare(void) +{ + return iommu_go_to_state(IOMMU_ACPI_FINISHED); +} + +int __init amd_iommu_supported(void) +{ + return amd_iommu_irq_remap ? 1 : 0; +} + +int __init amd_iommu_enable(void) +{ + int ret; + + ret = iommu_go_to_state(IOMMU_ENABLED); + if (ret) + return ret; + irq_remapping_enabled = 1; + + return 0; +} + +void amd_iommu_disable(void) +{ + amd_iommu_suspend(); +} + +int amd_iommu_reenable(int mode) +{ + amd_iommu_resume(); + + return 0; +} + +int __init amd_iommu_enable_faulting(void) +{ + /* We enable MSI later when PCI is initialized */ + return 0; +} +#endif /* * This is the core init function for AMD IOMMU hardware in the system. diff --git a/drivers/iommu/amd_iommu_proto.h b/drivers/iommu/amd_iommu_proto.h index 1a7f41c..c294961 100644 --- a/drivers/iommu/amd_iommu_proto.h +++ b/drivers/iommu/amd_iommu_proto.h @@ -32,6 +32,14 @@ extern void amd_iommu_uninit_devices(void); extern void amd_iommu_init_notifier(void); extern void amd_iommu_init_api(void); +/* Needed for interrupt remapping */ +extern int amd_iommu_supported(void); +extern int amd_iommu_prepare(void); +extern int amd_iommu_enable(void); +extern void amd_iommu_disable(void); +extern int amd_iommu_reenable(int); +extern int amd_iommu_enable_faulting(void); + /* IOMMUv2 specific functions */ struct iommu_domain; diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h index 624d360..95363ac 100644 --- a/drivers/iommu/irq_remapping.h +++ b/drivers/iommu/irq_remapping.h @@ -82,6 +82,7 @@ struct irq_remap_ops { }; extern struct irq_remap_ops intel_irq_remap_ops; +extern struct irq_remap_ops amd_iommu_irq_ops; #else /* CONFIG_IRQ_REMAP */ |