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