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Add global iommu list 

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
wifi-calibration
Weidong Han 2008-12-08 11:06:32 +08:00 committed by Joerg Roedel
parent 3b5410e735
commit d9630fe941
1 changed files with 25 additions and 0 deletions
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25
drivers/pci/intel-iommu.c
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@ -57,6 +57,9 @@
#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
/* global iommu list, set NULL for ignored DMAR units */
static struct intel_iommu **g_iommus;
/*
* 0: Present
* 1-11: Reserved
@ -1153,6 +1156,17 @@ void free_dmar_iommu(struct intel_iommu *iommu)
kfree(iommu->domains);
kfree(iommu->domain_ids);
g_iommus[iommu->seq_id] = NULL;
/* if all iommus are freed, free g_iommus */
for (i = 0; i < g_num_of_iommus; i++) {
if (g_iommus[i])
break;
}
if (i == g_num_of_iommus)
kfree(g_iommus);
/* free context mapping */
free_context_table(iommu);
}
@ -1794,9 +1808,18 @@ static int __init init_dmars(void)
*/
}
g_iommus = kcalloc(g_num_of_iommus, sizeof(struct intel_iommu *),
GFP_KERNEL);
if (!g_iommus) {
printk(KERN_ERR "Allocating global iommu array failed\n");
ret = -ENOMEM;
goto error;
}
deferred_flush = kzalloc(g_num_of_iommus *
sizeof(struct deferred_flush_tables), GFP_KERNEL);
if (!deferred_flush) {
kfree(g_iommus);
ret = -ENOMEM;
goto error;
}
@ -1806,6 +1829,7 @@ static int __init init_dmars(void)
continue;
iommu = drhd->iommu;
g_iommus[iommu->seq_id] = iommu;
ret = iommu_init_domains(iommu);
if (ret)
@ -1918,6 +1942,7 @@ error:
iommu = drhd->iommu;
free_iommu(iommu);
}
kfree(g_iommus);
return ret;
}