hv: add INTx mapping for pre-launched VMs
Add the capability of forwarding specified physical IOAPIC interrupt lines to pre-launched VMs as virtual IOAPIC interrupts. This is for the sake of the certain MMIO pass-thru devices on EHL CRB which can support only INTx interrupts. Tracked-On: #5245 Signed-off-by: Toshiki Nishioka <toshiki.nishioka@intel.com> Reviewed-by: Junjie Mao <junjie.mao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
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@ -803,3 +803,16 @@ void ptirq_remove_msix_remapping(const struct acrn_vm *vm, uint16_t phys_bdf,
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spinlock_release(&ptdev_lock);
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}
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}
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/*
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* @pre vm != NULL
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*/
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void ptirq_remove_configured_intx_remappings(const struct acrn_vm *vm)
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{
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const struct acrn_vm_config *vm_config = get_vm_config(vm->vm_id);
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uint32_t i;
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for (i = 0; i < vm_config->pt_intx_num; i++) {
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ptirq_remove_intx_remapping(vm, vm_config->pt_intx[i].virt_gsi, false);
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}
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}
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@ -33,6 +33,7 @@
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#include <vacpi.h>
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#include <platform_caps.h>
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#include <mmio_dev.h>
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#include <assign.h>
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vm_sw_loader_t vm_sw_loader;
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@ -519,6 +520,18 @@ int32_t create_vm(uint16_t vm_id, uint64_t pcpu_bitmap, struct acrn_vm_config *v
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}
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}
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if (status == 0) {
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uint32_t i;
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for (i = 0; i < vm_config->pt_intx_num; i++) {
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status = ptirq_add_intx_remapping(vm, vm_config->pt_intx[i].virt_gsi,
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vm_config->pt_intx[i].phys_gsi, false);
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if (status != 0) {
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ptirq_remove_configured_intx_remappings(vm);
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break;
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}
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}
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}
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if ((status != 0) && (vm->arch_vm.nworld_eptp != NULL)) {
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(void)memset(vm->arch_vm.nworld_eptp, 0U, PAGE_SIZE);
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}
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@ -604,6 +617,8 @@ int32_t shutdown_vm(struct acrn_vm *vm)
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sbuf_reset();
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}
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ptirq_remove_configured_intx_remappings(vm);
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deinit_vuart(vm);
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deinit_vpci(vm);
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@ -141,6 +141,20 @@ void ptirq_remove_intx_remapping(const struct acrn_vm *vm, uint32_t virt_gsi, bo
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*/
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void ptirq_remove_msix_remapping(const struct acrn_vm *vm, uint16_t phys_bdf, uint32_t vector_count);
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/**
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* @brief Remove all interrupt remappings for INTx which are defined in VM config.
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*
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* Deactivate & remove all mapping entries of the virt_gsis defined in VM config for given vm.
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*
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* @param[in] vm pointer to acrn_vm
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*
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* @return None
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*
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* @pre vm != NULL
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*
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*/
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void ptirq_remove_configured_intx_remappings(const struct acrn_vm *vm);
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/**
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* @}
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*/
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