From 35c2450191634bd0ac0ae3c6e9da3f590124e8e2 Mon Sep 17 00:00:00 2001 From: "Singh, Brijesh" Date: Mon, 1 Oct 2018 19:44:29 +0000 Subject: x86_iommu: move vtd_generate_msi_message in common file The vtd_generate_msi_message() in intel-iommu is used to construct a MSI Message from IRQ. A similar function will be needed when we add interrupt remapping support in amd-iommu. Moving the function in common file to avoid the code duplication. Rename it to x86_iommu_irq_to_msi_message(). There is no logic changes in the code flow. Signed-off-by: Brijesh Singh Suggested-by: Peter Xu Reviewed-by: Eduardo Habkost Cc: Peter Xu Cc: "Michael S. Tsirkin" Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Cc: Marcel Apfelbaum Cc: Tom Lendacky Cc: Suravee Suthikulpanit Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/x86-iommu.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'hw/i386/x86-iommu.c') diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c index 7440cb8..abc3c03 100644 --- a/hw/i386/x86-iommu.c +++ b/hw/i386/x86-iommu.c @@ -53,6 +53,30 @@ void x86_iommu_iec_notify_all(X86IOMMUState *iommu, bool global, } } +/* Generate one MSI message from VTDIrq info */ +void x86_iommu_irq_to_msi_message(X86IOMMUIrq *irq, MSIMessage *msg_out) +{ + X86IOMMU_MSIMessage msg = {}; + + /* Generate address bits */ + msg.dest_mode = irq->dest_mode; + msg.redir_hint = irq->redir_hint; + msg.dest = irq->dest; + msg.__addr_hi = irq->dest & 0xffffff00; + msg.__addr_head = cpu_to_le32(0xfee); + /* Keep this from original MSI address bits */ + msg.__not_used = irq->msi_addr_last_bits; + + /* Generate data bits */ + msg.vector = irq->vector; + msg.delivery_mode = irq->delivery_mode; + msg.level = 1; + msg.trigger_mode = irq->trigger_mode; + + msg_out->address = msg.msi_addr; + msg_out->data = msg.msi_data; +} + /* Default X86 IOMMU device */ static X86IOMMUState *x86_iommu_default = NULL; -- cgit v1.1