1 files changed, 13 insertions, 140 deletions

diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 6313f0a05db7..44ebe25e7703 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -15,7 +15,6 @@
 #include <linux/hpet.h>
 #include <linux/msi.h>
 #include <asm/irqdomain.h>
-#include <asm/msidef.h>
 #include <asm/hpet.h>
 #include <asm/hw_irq.h>
 #include <asm/apic.h>
@@ -23,38 +22,11 @@
 
 struct irq_domain *x86_pci_msi_default_domain __ro_after_init;
 
-static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg)
-{
-	msg->address_hi = MSI_ADDR_BASE_HI;
-
-	if (x2apic_enabled())
-		msg->address_hi |= MSI_ADDR_EXT_DEST_ID(cfg->dest_apicid);
-
-	msg->address_lo =
-		MSI_ADDR_BASE_LO |
-		((apic->irq_dest_mode == 0) ?
-			MSI_ADDR_DEST_MODE_PHYSICAL :
-			MSI_ADDR_DEST_MODE_LOGICAL) |
-		MSI_ADDR_REDIRECTION_CPU |
-		MSI_ADDR_DEST_ID(cfg->dest_apicid);
-
-	msg->data =
-		MSI_DATA_TRIGGER_EDGE |
-		MSI_DATA_LEVEL_ASSERT |
-		MSI_DATA_DELIVERY_FIXED |
-		MSI_DATA_VECTOR(cfg->vector);
-}
-
-void x86_vector_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
-{
-	__irq_msi_compose_msg(irqd_cfg(data), msg);
-}
-
 static void irq_msi_update_msg(struct irq_data *irqd, struct irq_cfg *cfg)
 {
 	struct msi_msg msg[2] = { [1] = { }, };
 
-	__irq_msi_compose_msg(cfg, msg);
+	__irq_msi_compose_msg(cfg, msg, false);
 	irq_data_get_irq_chip(irqd)->irq_write_msi_msg(irqd, msg);
 }
 
@@ -276,6 +248,17 @@ struct irq_domain *arch_create_remap_msi_irq_domain(struct irq_domain *parent,
 #endif
 
 #ifdef CONFIG_DMAR_TABLE
+/*
+ * The Intel IOMMU (ab)uses the high bits of the MSI address to contain the
+ * high bits of the destination APIC ID. This can't be done in the general
+ * case for MSIs as it would be targeting real memory above 4GiB not the
+ * APIC.
+ */
+static void dmar_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
+{
+	__irq_msi_compose_msg(irqd_cfg(data), msg, true);
+}
+
 static void dmar_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
 {
 	dmar_msi_write(data->irq, msg);
@@ -288,6 +271,7 @@ static struct irq_chip dmar_msi_controller = {
 	.irq_ack		= irq_chip_ack_parent,
 	.irq_set_affinity	= msi_domain_set_affinity,
 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.irq_compose_msi_msg	= dmar_msi_compose_msg,
 	.irq_write_msi_msg	= dmar_msi_write_msg,
 	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };
@@ -356,114 +340,3 @@ void dmar_free_hwirq(int irq)
 	irq_domain_free_irqs(irq, 1);
 }
 #endif
-
-/*
- * MSI message composition
- */
-#ifdef CONFIG_HPET_TIMER
-static inline int hpet_dev_id(struct irq_domain *domain)
-{
-	struct msi_domain_info *info = msi_get_domain_info(domain);
-
-	return (int)(long)info->data;
-}
-
-static void hpet_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
-{
-	hpet_msi_write(irq_data_get_irq_handler_data(data), msg);
-}
-
-static struct irq_chip hpet_msi_controller __ro_after_init = {
-	.name = "HPET-MSI",
-	.irq_unmask = hpet_msi_unmask,
-	.irq_mask = hpet_msi_mask,
-	.irq_ack = irq_chip_ack_parent,
-	.irq_set_affinity = msi_domain_set_affinity,
-	.irq_retrigger = irq_chip_retrigger_hierarchy,
-	.irq_write_msi_msg = hpet_msi_write_msg,
-	.flags = IRQCHIP_SKIP_SET_WAKE,
-};
-
-static int hpet_msi_init(struct irq_domain *domain,
-			 struct msi_domain_info *info, unsigned int virq,
-			 irq_hw_number_t hwirq, msi_alloc_info_t *arg)
-{
-	irq_set_status_flags(virq, IRQ_MOVE_PCNTXT);
-	irq_domain_set_info(domain, virq, arg->hwirq, info->chip, NULL,
-			    handle_edge_irq, arg->data, "edge");
-
-	return 0;
-}
-
-static void hpet_msi_free(struct irq_domain *domain,
-			  struct msi_domain_info *info, unsigned int virq)
-{
-	irq_clear_status_flags(virq, IRQ_MOVE_PCNTXT);
-}
-
-static struct msi_domain_ops hpet_msi_domain_ops = {
-	.msi_init	= hpet_msi_init,
-	.msi_free	= hpet_msi_free,
-};
-
-static struct msi_domain_info hpet_msi_domain_info = {
-	.ops		= &hpet_msi_domain_ops,
-	.chip		= &hpet_msi_controller,
-	.flags		= MSI_FLAG_USE_DEF_DOM_OPS,
-};
-
-struct irq_domain *hpet_create_irq_domain(int hpet_id)
-{
-	struct msi_domain_info *domain_info;
-	struct irq_domain *parent, *d;
-	struct irq_alloc_info info;
-	struct fwnode_handle *fn;
-
-	if (x86_vector_domain == NULL)
-		return NULL;
-
-	domain_info = kzalloc(sizeof(*domain_info), GFP_KERNEL);
-	if (!domain_info)
-		return NULL;
-
-	*domain_info = hpet_msi_domain_info;
-	domain_info->data = (void *)(long)hpet_id;
-
-	init_irq_alloc_info(&info, NULL);
-	info.type = X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT;
-	info.devid = hpet_id;
-	parent = irq_remapping_get_irq_domain(&info);
-	if (parent == NULL)
-		parent = x86_vector_domain;
-	else
-		hpet_msi_controller.name = "IR-HPET-MSI";
-
-	fn = irq_domain_alloc_named_id_fwnode(hpet_msi_controller.name,
-					      hpet_id);
-	if (!fn) {
-		kfree(domain_info);
-		return NULL;
-	}
-
-	d = msi_create_irq_domain(fn, domain_info, parent);
-	if (!d) {
-		irq_domain_free_fwnode(fn);
-		kfree(domain_info);
-	}
-	return d;
-}
-
-int hpet_assign_irq(struct irq_domain *domain, struct hpet_channel *hc,
-		    int dev_num)
-{
-	struct irq_alloc_info info;
-
-	init_irq_alloc_info(&info, NULL);
-	info.type = X86_IRQ_ALLOC_TYPE_HPET;
-	info.data = hc;
-	info.devid = hpet_dev_id(domain);
-	info.hwirq = dev_num;
-
-	return irq_domain_alloc_irqs(domain, 1, NUMA_NO_NODE, &info);
-}
-#endif