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intel-iommu: Tidy up iommu->gcmd handling 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-05-10 20:30:58 +01:00
parent 462b60f6cc
commit c416daa98a
3 changed files with 15 additions and 20 deletions
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6
drivers/pci/dmar.c
View File

@ -784,7 +784,6 @@ void dmar_disable_qi(struct intel_iommu *iommu)
cpu_relax();
iommu->gcmd &= ~DMA_GCMD_QIE;
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl,
@ -798,7 +797,7 @@ end:
*/
static void __dmar_enable_qi(struct intel_iommu *iommu)
{
u32 cmd, sts;
u32 sts;
unsigned long flags;
struct q_inval *qi = iommu->qi;
@ -812,9 +811,8 @@ static void __dmar_enable_qi(struct intel_iommu *iommu)
dmar_writeq(iommu->reg + DMAR_IQA_REG, virt_to_phys(qi->desc));
cmd = iommu->gcmd | DMA_GCMD_QIE;
iommu->gcmd |= DMA_GCMD_QIE;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_QIES), sts);

18
drivers/pci/intel-iommu.c
View File

@ -819,7 +819,7 @@ static int iommu_alloc_root_entry(struct intel_iommu *iommu)
static void iommu_set_root_entry(struct intel_iommu *iommu)
{
void *addr;
u32 cmd, sts;
u32 sts;
unsigned long flag;
addr = iommu->root_entry;
@ -827,12 +827,11 @@ static void iommu_set_root_entry(struct intel_iommu *iommu)
spin_lock_irqsave(&iommu->register_lock, flag);
dmar_writeq(iommu->reg + DMAR_RTADDR_REG, virt_to_phys(addr));
cmd = iommu->gcmd | DMA_GCMD_SRTP;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
writel(iommu->gcmd | DMA_GCMD_SRTP, iommu->reg + DMAR_GCMD_REG);
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_RTPS), sts);
readl, (sts & DMA_GSTS_RTPS), sts);
spin_unlock_irqrestore(&iommu->register_lock, flag);
}
@ -844,12 +843,13 @@ static void iommu_flush_write_buffer(struct intel_iommu *iommu)
if (!rwbf_quirk && !cap_rwbf(iommu->cap))
return;
spin_lock_irqsave(&iommu->register_lock, flag);
writel(iommu->gcmd | DMA_GCMD_WBF, iommu->reg + DMAR_GCMD_REG);
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (!(val & DMA_GSTS_WBFS)), val);
readl, (!(val & DMA_GSTS_WBFS)), val);
spin_unlock_irqrestore(&iommu->register_lock, flag);
}
@ -995,13 +995,13 @@ static int iommu_enable_translation(struct intel_iommu *iommu)
unsigned long flags;
spin_lock_irqsave(&iommu->register_lock, flags);
writel(iommu->gcmd|DMA_GCMD_TE, iommu->reg + DMAR_GCMD_REG);
iommu->gcmd |= DMA_GCMD_TE;
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_TES), sts);
readl, (sts & DMA_GSTS_TES), sts);
iommu->gcmd |= DMA_GCMD_TE;
spin_unlock_irqrestore(&iommu->register_lock, flags);
return 0;
}
@ -1017,7 +1017,7 @@ static int iommu_disable_translation(struct intel_iommu *iommu)
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (!(sts & DMA_GSTS_TES)), sts);
readl, (!(sts & DMA_GSTS_TES)), sts);
spin_unlock_irqrestore(&iommu->register_lock, flag);
return 0;

11
drivers/pci/intr_remapping.c
View File

@ -404,7 +404,7 @@ int free_irte(int irq)
static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
{
u64 addr;
u32 cmd, sts;
u32 sts;
unsigned long flags;
addr = virt_to_phys((void *)iommu->ir_table->base);
@ -415,9 +415,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
(addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);
/* Set interrupt-remapping table pointer */
cmd = iommu->gcmd | DMA_GCMD_SIRTP;
iommu->gcmd |= DMA_GCMD_SIRTP;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_IRTPS), sts);
@ -427,9 +426,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
spin_lock_irqsave(&iommu->register_lock, flags);
/* enable comaptiblity format interrupt pass through */
cmd = iommu->gcmd | DMA_GCMD_CFI;
iommu->gcmd |= DMA_GCMD_CFI;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_CFIS), sts);
@ -446,9 +444,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
spin_lock_irqsave(&iommu->register_lock, flags);
/* Enable interrupt-remapping */
cmd = iommu->gcmd | DMA_GCMD_IRE;
iommu->gcmd |= DMA_GCMD_IRE;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_IRES), sts);