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Diffstat (limited to 'arch/ia64/kernel/msi_ia64.c')
-rw-r--r--arch/ia64/kernel/msi_ia64.c198
1 files changed, 0 insertions, 198 deletions
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
deleted file mode 100644
index 025e5133c8..0000000000
--- a/arch/ia64/kernel/msi_ia64.c
+++ /dev/null
@@ -1,198 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * MSI hooks for standard x86 apic
- */
-
-#include <linux/pci.h>
-#include <linux/irq.h>
-#include <linux/msi.h>
-#include <linux/dmar.h>
-#include <asm/smp.h>
-#include <asm/msidef.h>
-
-static struct irq_chip ia64_msi_chip;
-
-#ifdef CONFIG_SMP
-static int ia64_set_msi_irq_affinity(struct irq_data *idata,
- const cpumask_t *cpu_mask, bool force)
-{
- struct msi_msg msg;
- u32 addr, data;
- int cpu = cpumask_first_and(cpu_mask, cpu_online_mask);
- unsigned int irq = idata->irq;
-
- if (irq_prepare_move(irq, cpu))
- return -1;
-
- __get_cached_msi_msg(irq_data_get_msi_desc(idata), &msg);
-
- addr = msg.address_lo;
- addr &= MSI_ADDR_DEST_ID_MASK;
- addr |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu));
- msg.address_lo = addr;
-
- data = msg.data;
- data &= MSI_DATA_VECTOR_MASK;
- data |= MSI_DATA_VECTOR(irq_to_vector(irq));
- msg.data = data;
-
- pci_write_msi_msg(irq, &msg);
- irq_data_update_affinity(idata, cpumask_of(cpu));
-
- return 0;
-}
-#endif /* CONFIG_SMP */
-
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
-{
- struct msi_msg msg;
- unsigned long dest_phys_id;
- int irq, vector;
-
- irq = create_irq();
- if (irq < 0)
- return irq;
-
- irq_set_msi_desc(irq, desc);
- dest_phys_id = cpu_physical_id(cpumask_any_and(&(irq_to_domain(irq)),
- cpu_online_mask));
- vector = irq_to_vector(irq);
-
- msg.address_hi = 0;
- msg.address_lo =
- MSI_ADDR_HEADER |
- MSI_ADDR_DEST_MODE_PHYS |
- MSI_ADDR_REDIRECTION_CPU |
- MSI_ADDR_DEST_ID_CPU(dest_phys_id);
-
- msg.data =
- MSI_DATA_TRIGGER_EDGE |
- MSI_DATA_LEVEL_ASSERT |
- MSI_DATA_DELIVERY_FIXED |
- MSI_DATA_VECTOR(vector);
-
- pci_write_msi_msg(irq, &msg);
- irq_set_chip_and_handler(irq, &ia64_msi_chip, handle_edge_irq);
-
- return 0;
-}
-
-void arch_teardown_msi_irq(unsigned int irq)
-{
- destroy_irq(irq);
-}
-
-static void ia64_ack_msi_irq(struct irq_data *data)
-{
- irq_complete_move(data->irq);
- irq_move_irq(data);
- ia64_eoi();
-}
-
-static int ia64_msi_retrigger_irq(struct irq_data *data)
-{
- unsigned int vector = irq_to_vector(data->irq);
- ia64_resend_irq(vector);
-
- return 1;
-}
-
-/*
- * Generic ops used on most IA64 platforms.
- */
-static struct irq_chip ia64_msi_chip = {
- .name = "PCI-MSI",
- .irq_mask = pci_msi_mask_irq,
- .irq_unmask = pci_msi_unmask_irq,
- .irq_ack = ia64_ack_msi_irq,
-#ifdef CONFIG_SMP
- .irq_set_affinity = ia64_set_msi_irq_affinity,
-#endif
- .irq_retrigger = ia64_msi_retrigger_irq,
-};
-
-#ifdef CONFIG_INTEL_IOMMU
-#ifdef CONFIG_SMP
-static int dmar_msi_set_affinity(struct irq_data *data,
- const struct cpumask *mask, bool force)
-{
- unsigned int irq = data->irq;
- struct irq_cfg *cfg = irq_cfg + irq;
- struct msi_msg msg;
- int cpu = cpumask_first_and(mask, cpu_online_mask);
-
- if (irq_prepare_move(irq, cpu))
- return -1;
-
- dmar_msi_read(irq, &msg);
-
- msg.data &= ~MSI_DATA_VECTOR_MASK;
- msg.data |= MSI_DATA_VECTOR(cfg->vector);
- msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
- msg.address_lo |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu));
-
- dmar_msi_write(irq, &msg);
- irq_data_update_affinity(data, mask);
-
- return 0;
-}
-#endif /* CONFIG_SMP */
-
-static struct irq_chip dmar_msi_type = {
- .name = "DMAR_MSI",
- .irq_unmask = dmar_msi_unmask,
- .irq_mask = dmar_msi_mask,
- .irq_ack = ia64_ack_msi_irq,
-#ifdef CONFIG_SMP
- .irq_set_affinity = dmar_msi_set_affinity,
-#endif
- .irq_retrigger = ia64_msi_retrigger_irq,
-};
-
-static void
-msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
-{
- struct irq_cfg *cfg = irq_cfg + irq;
- unsigned dest;
-
- dest = cpu_physical_id(cpumask_first_and(&(irq_to_domain(irq)),
- cpu_online_mask));
-
- msg->address_hi = 0;
- msg->address_lo =
- MSI_ADDR_HEADER |
- MSI_ADDR_DEST_MODE_PHYS |
- MSI_ADDR_REDIRECTION_CPU |
- MSI_ADDR_DEST_ID_CPU(dest);
-
- msg->data =
- MSI_DATA_TRIGGER_EDGE |
- MSI_DATA_LEVEL_ASSERT |
- MSI_DATA_DELIVERY_FIXED |
- MSI_DATA_VECTOR(cfg->vector);
-}
-
-int dmar_alloc_hwirq(int id, int node, void *arg)
-{
- int irq;
- struct msi_msg msg;
-
- irq = create_irq();
- if (irq > 0) {
- irq_set_handler_data(irq, arg);
- irq_set_chip_and_handler_name(irq, &dmar_msi_type,
- handle_edge_irq, "edge");
- msi_compose_msg(NULL, irq, &msg);
- dmar_msi_write(irq, &msg);
- }
-
- return irq;
-}
-
-void dmar_free_hwirq(int irq)
-{
- irq_set_handler_data(irq, NULL);
- destroy_irq(irq);
-}
-#endif /* CONFIG_INTEL_IOMMU */
-