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| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-06-12 12:09:35 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-07-17 12:14:58 +0200 |
| commit | 643511b37eb72d831646bacafaeace1eeadf5a54 (patch) | |
| tree | b541b53f37fe8a49b4edccd96c924099dfaee201 /drivers/iommu/amd_iommu_init.c | |
| parent | 4d121c3256edc66fe8a8e7f975eba72add120a26 (diff) | |
| download | olio-linux-3.10-643511b37eb72d831646bacafaeace1eeadf5a54.tar.xz olio-linux-3.10-643511b37eb72d831646bacafaeace1eeadf5a54.zip | |
iommu/amd: Introduce early_amd_iommu_init routine
Split out the code to parse the ACPI table and setup
relevant data structures into a new function.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index b18034a8fdb..a5dbefb8e26 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1491,17 +1491,14 @@ static void __init free_on_init_error(void) * After everything is set up the IOMMUs are enabled and the necessary * hotplug and suspend notifiers are registered. */ -int __init amd_iommu_init_hardware(void) +static int __init early_amd_iommu_init(void) { struct acpi_table_header *ivrs_base; acpi_size ivrs_size; acpi_status status; int i, ret = 0; - if (no_iommu || (iommu_detected && !gart_iommu_aperture)) - return -ENODEV; - - if (amd_iommu_disabled || !amd_iommu_detected) + if (!amd_iommu_detected) return -ENODEV; if (amd_iommu_dev_table != NULL) { @@ -1588,16 +1585,6 @@ int __init amd_iommu_init_hardware(void) if (ret) goto free; - ret = amd_iommu_init_pci(); - if (ret) - goto free; - - enable_iommus(); - - amd_iommu_init_notifier(); - - register_syscore_ops(&amd_iommu_syscore_ops); - out: /* Don't leak any ACPI memory */ early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size); @@ -1611,6 +1598,27 @@ free: goto out; } +int __init amd_iommu_init_hardware(void) +{ + int ret = 0; + + ret = early_amd_iommu_init(); + if (ret) + return ret; + + ret = amd_iommu_init_pci(); + if (ret) + return ret; + + enable_iommus(); + + amd_iommu_init_notifier(); + + register_syscore_ops(&amd_iommu_syscore_ops); + + return ret; +} + static int amd_iommu_enable_interrupts(void) { struct amd_iommu *iommu; |