Ejemplos de IOMMU_WAIT_OP en C++ (Cpp)

Ejemplo n.º 1

Archivo: intr_remapping.c Proyecto: mjduddin/B14CKB1RD_kernel_m8

static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
{
	u64 addr;
	u32 sts;
	unsigned long flags;

	addr = virt_to_phys((void *)iommu->ir_table->base);

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	dmar_writeq(iommu->reg + DMAR_IRTA_REG,
		    (addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);

	
	iommu->gcmd |= DMA_GCMD_SIRTP;
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRTPS), sts);
	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);

	qi_global_iec(iommu);

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	
	iommu->gcmd |= DMA_GCMD_IRE;
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRES), sts);

	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);
}

Ejemplo n.º 2

Archivo: intel_irq_remapping.c Proyecto: neominds/wrfx227819

static void iommu_set_irq_remapping(struct intel_iommu *iommu, int mode)
{
	u64 addr;
	u32 sts;
	unsigned long flags;

	addr = virt_to_phys((void *)iommu->ir_table->base);

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	dmar_writeq(iommu->reg + DMAR_IRTA_REG,
		    (addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);

	/* Set interrupt-remapping table pointer */
	iommu->gcmd |= DMA_GCMD_SIRTP;
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRTPS), sts);
	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);

	/*
	 * global invalidation of interrupt entry cache before enabling
	 * interrupt-remapping.
	 */
	qi_global_iec(iommu);

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	/* Enable interrupt-remapping */
	iommu->gcmd |= DMA_GCMD_IRE;
	iommu->gcmd &= ~DMA_GCMD_CFI;  /* Block compatibility-format MSIs */
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRES), sts);

	/*
	 * With CFI clear in the Global Command register, we should be
	 * protected from dangerous (i.e. compatibility) interrupts
	 * regardless of x2apic status.  Check just to be sure.
	 */
	if (sts & DMA_GSTS_CFIS)
		WARN(1, KERN_WARNING
			"Compatibility-format IRQs enabled despite intr remapping;\n"
			"you are vulnerable to IRQ injection.\n");

	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);
}

Ejemplo n.º 3

Archivo: intr_remapping.c Proyecto: KaZoom/buildroot-linux-kernel-m3

/*
 * Disable Interrupt Remapping.
 */
static void iommu_disable_intr_remapping(struct intel_iommu *iommu)
{
	unsigned long flags;
	u32 sts;

	if (!ecap_ir_support(iommu->ecap))
		return;

	/*
	 * global invalidation of interrupt entry cache before disabling
	 * interrupt-remapping.
	 */
	qi_global_iec(iommu);

	spin_lock_irqsave(&iommu->register_lock, flags);

	sts = dmar_readq(iommu->reg + DMAR_GSTS_REG);
	if (!(sts & DMA_GSTS_IRES))
		goto end;

	iommu->gcmd &= ~DMA_GCMD_IRE;
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, !(sts & DMA_GSTS_IRES), sts);

end:
	spin_unlock_irqrestore(&iommu->register_lock, flags);
}

Ejemplo n.º 4

Archivo: intel_irq_remapping.c Proyecto: Lyude/linux

static void iommu_enable_irq_remapping(struct intel_iommu *iommu)
{
	unsigned long flags;
	u32 sts;

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	/* Enable interrupt-remapping */
	iommu->gcmd |= DMA_GCMD_IRE;
	iommu->gcmd &= ~DMA_GCMD_CFI;  /* Block compatibility-format MSIs */
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRES), sts);

	/*
	 * With CFI clear in the Global Command register, we should be
	 * protected from dangerous (i.e. compatibility) interrupts
	 * regardless of x2apic status.  Check just to be sure.
	 */
	if (sts & DMA_GSTS_CFIS)
		WARN(1, KERN_WARNING
			"Compatibility-format IRQs enabled despite intr remapping;\n"
			"you are vulnerable to IRQ injection.\n");

	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);
}

Ejemplo n.º 5

Archivo: intel_irq_remapping.c Proyecto: Lyude/linux

static void iommu_set_irq_remapping(struct intel_iommu *iommu, int mode)
{
	unsigned long flags;
	u64 addr;
	u32 sts;

	addr = virt_to_phys((void *)iommu->ir_table->base);

	raw_spin_lock_irqsave(&iommu->register_lock, flags);

	dmar_writeq(iommu->reg + DMAR_IRTA_REG,
		    (addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);

	/* Set interrupt-remapping table pointer */
	writel(iommu->gcmd | DMA_GCMD_SIRTP, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRTPS), sts);
	raw_spin_unlock_irqrestore(&iommu->register_lock, flags);

	/*
	 * Global invalidation of interrupt entry cache to make sure the
	 * hardware uses the new irq remapping table.
	 */
	qi_global_iec(iommu);
}

Ejemplo n.º 6

static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
{
	u64 addr;
	u32 cmd, sts;
	unsigned long flags;

	addr = virt_to_phys((void *)iommu->ir_table->base);

	spin_lock_irqsave(&iommu->register_lock, flags);

	dmar_writeq(iommu->reg + DMAR_IRTA_REG,
		    (addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);

	/* Set interrupt-remapping table pointer */
	cmd = iommu->gcmd | DMA_GCMD_SIRTP;
	writel(cmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRTPS), sts);
	spin_unlock_irqrestore(&iommu->register_lock, flags);

	/*
	 * global invalidation of interrupt entry cache before enabling
	 * interrupt-remapping.
	 */
	qi_global_iec(iommu);

	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);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, (sts & DMA_GSTS_IRES), sts);

	spin_unlock_irqrestore(&iommu->register_lock, flags);
}

Ejemplo n.º 7

Archivo: utils.c Proyecto: 0day-ci/xen

/* Disable vt-d protected memory registers. */
void disable_pmr(struct iommu *iommu)
{
    u32 val;
    unsigned long flags;

    val = dmar_readl(iommu->reg, DMAR_PMEN_REG);
    if ( !(val & DMA_PMEN_PRS) )
        return;

    spin_lock_irqsave(&iommu->register_lock, flags);
    dmar_writel(iommu->reg, DMAR_PMEN_REG, val & ~DMA_PMEN_EPM);

    IOMMU_WAIT_OP(iommu, DMAR_PMEN_REG, dmar_readl,
                  !(val & DMA_PMEN_PRS), val);
    spin_unlock_irqrestore(&iommu->register_lock, flags);

    dprintk(XENLOG_INFO VTDPREFIX,
            "Disabled protected memory registers\n");
}

Ejemplo n.º 8

/*
 * Disable Interrupt Remapping.
 */
static void disable_intr_remapping(struct intel_iommu *iommu)
{
	unsigned long flags;
	u32 sts;

	if (!ecap_ir_support(iommu->ecap))
		return;

	spin_lock_irqsave(&iommu->register_lock, flags);

	sts = dmar_readq(iommu->reg + DMAR_GSTS_REG);
	if (!(sts & DMA_GSTS_IRES))
		goto end;

	iommu->gcmd &= ~DMA_GCMD_IRE;
	writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG);

	IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
		      readl, !(sts & DMA_GSTS_IRES), sts);

end:
	spin_unlock_irqrestore(&iommu->register_lock, flags);
}