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Merge branch 'iommu-fixes-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent

hifive-unleashed-5.1
Ingo Molnar 2008-12-18 13:28:11 +01:00
parent 55aab5f49e 84df817595
commit c9bc03ac31
2 changed files with 7 additions and 2 deletions
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5
arch/x86/kernel/amd_iommu.c
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@ -235,8 +235,9 @@ static int iommu_completion_wait(struct amd_iommu *iommu)
status &= ~MMIO_STATUS_COM_WAIT_INT_MASK;
writel(status, iommu->mmio_base + MMIO_STATUS_OFFSET);
if (unlikely((i == EXIT_LOOP_COUNT) && printk_ratelimit()))
printk(KERN_WARNING "AMD IOMMU: Completion wait loop failed\n");
if (unlikely(i == EXIT_LOOP_COUNT))
panic("AMD IOMMU: Completion wait loop failed\n");
out:
spin_unlock_irqrestore(&iommu->lock, flags);

4
arch/x86/kernel/amd_iommu_init.c
View File

@ -427,6 +427,10 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu)
memcpy_toio(iommu->mmio_base + MMIO_CMD_BUF_OFFSET,
&entry, sizeof(entry));
/* set head and tail to zero manually */
writel(0x00, iommu->mmio_base + MMIO_CMD_HEAD_OFFSET);
writel(0x00, iommu->mmio_base + MMIO_CMD_TAIL_OFFSET);
iommu_feature_enable(iommu, CONTROL_CMDBUF_EN);
return cmd_buf;