2 * MSI hooks for standard x86 apic
8 #include <linux/dmar.h>
10 #include <asm/msidef.h>
12 static struct irq_chip ia64_msi_chip;
15 static int ia64_set_msi_irq_affinity(struct irq_data *idata,
16 const cpumask_t *cpu_mask, bool force)
20 int cpu = cpumask_first_and(cpu_mask, cpu_online_mask);
21 unsigned int irq = idata->irq;
23 if (irq_prepare_move(irq, cpu))
26 get_cached_msi_msg(irq, &msg);
28 addr = msg.address_lo;
29 addr &= MSI_ADDR_DEST_ID_MASK;
30 addr |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu));
31 msg.address_lo = addr;
34 data &= MSI_DATA_VECTOR_MASK;
35 data |= MSI_DATA_VECTOR(irq_to_vector(irq));
38 write_msi_msg(irq, &msg);
39 cpumask_copy(idata->affinity, cpumask_of(cpu));
43 #endif /* CONFIG_SMP */
45 int ia64_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
48 unsigned long dest_phys_id;
56 irq_set_msi_desc(irq, desc);
57 cpumask_and(&mask, &(irq_to_domain(irq)), cpu_online_mask);
58 dest_phys_id = cpu_physical_id(first_cpu(mask));
59 vector = irq_to_vector(irq);
64 MSI_ADDR_DEST_MODE_PHYS |
65 MSI_ADDR_REDIRECTION_CPU |
66 MSI_ADDR_DEST_ID_CPU(dest_phys_id);
69 MSI_DATA_TRIGGER_EDGE |
70 MSI_DATA_LEVEL_ASSERT |
71 MSI_DATA_DELIVERY_FIXED |
72 MSI_DATA_VECTOR(vector);
74 write_msi_msg(irq, &msg);
75 irq_set_chip_and_handler(irq, &ia64_msi_chip, handle_edge_irq);
80 void ia64_teardown_msi_irq(unsigned int irq)
85 static void ia64_ack_msi_irq(struct irq_data *data)
87 irq_complete_move(data->irq);
92 static int ia64_msi_retrigger_irq(struct irq_data *data)
94 unsigned int vector = irq_to_vector(data->irq);
95 ia64_resend_irq(vector);
101 * Generic ops used on most IA64 platforms.
103 static struct irq_chip ia64_msi_chip = {
105 .irq_mask = mask_msi_irq,
106 .irq_unmask = unmask_msi_irq,
107 .irq_ack = ia64_ack_msi_irq,
109 .irq_set_affinity = ia64_set_msi_irq_affinity,
111 .irq_retrigger = ia64_msi_retrigger_irq,
115 int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
117 if (platform_setup_msi_irq)
118 return platform_setup_msi_irq(pdev, desc);
120 return ia64_setup_msi_irq(pdev, desc);
123 void arch_teardown_msi_irq(unsigned int irq)
125 if (platform_teardown_msi_irq)
126 return platform_teardown_msi_irq(irq);
128 return ia64_teardown_msi_irq(irq);
131 #ifdef CONFIG_INTEL_IOMMU
133 static int dmar_msi_set_affinity(struct irq_data *data,
134 const struct cpumask *mask, bool force)
136 unsigned int irq = data->irq;
137 struct irq_cfg *cfg = irq_cfg + irq;
139 int cpu = cpumask_first_and(mask, cpu_online_mask);
141 if (irq_prepare_move(irq, cpu))
144 dmar_msi_read(irq, &msg);
146 msg.data &= ~MSI_DATA_VECTOR_MASK;
147 msg.data |= MSI_DATA_VECTOR(cfg->vector);
148 msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
149 msg.address_lo |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu));
151 dmar_msi_write(irq, &msg);
152 cpumask_copy(data->affinity, mask);
156 #endif /* CONFIG_SMP */
158 static struct irq_chip dmar_msi_type = {
160 .irq_unmask = dmar_msi_unmask,
161 .irq_mask = dmar_msi_mask,
162 .irq_ack = ia64_ack_msi_irq,
164 .irq_set_affinity = dmar_msi_set_affinity,
166 .irq_retrigger = ia64_msi_retrigger_irq,
170 msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
172 struct irq_cfg *cfg = irq_cfg + irq;
176 cpumask_and(&mask, &(irq_to_domain(irq)), cpu_online_mask);
177 dest = cpu_physical_id(first_cpu(mask));
182 MSI_ADDR_DEST_MODE_PHYS |
183 MSI_ADDR_REDIRECTION_CPU |
184 MSI_ADDR_DEST_ID_CPU(dest);
187 MSI_DATA_TRIGGER_EDGE |
188 MSI_DATA_LEVEL_ASSERT |
189 MSI_DATA_DELIVERY_FIXED |
190 MSI_DATA_VECTOR(cfg->vector);
194 int arch_setup_dmar_msi(unsigned int irq)
199 ret = msi_compose_msg(NULL, irq, &msg);
202 dmar_msi_write(irq, &msg);
203 irq_set_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq,
207 #endif /* CONFIG_INTEL_IOMMU */