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_data_get_msi_desc(idata), &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 pci_write_msi_msg(irq, &msg);
39 cpumask_copy(irq_data_get_affinity_mask(idata), 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;
55 irq_set_msi_desc(irq, desc);
56 dest_phys_id = cpu_physical_id(cpumask_any_and(&(irq_to_domain(irq)),
58 vector = irq_to_vector(irq);
63 MSI_ADDR_DEST_MODE_PHYS |
64 MSI_ADDR_REDIRECTION_CPU |
65 MSI_ADDR_DEST_ID_CPU(dest_phys_id);
68 MSI_DATA_TRIGGER_EDGE |
69 MSI_DATA_LEVEL_ASSERT |
70 MSI_DATA_DELIVERY_FIXED |
71 MSI_DATA_VECTOR(vector);
73 pci_write_msi_msg(irq, &msg);
74 irq_set_chip_and_handler(irq, &ia64_msi_chip, handle_edge_irq);
79 void ia64_teardown_msi_irq(unsigned int irq)
84 static void ia64_ack_msi_irq(struct irq_data *data)
86 irq_complete_move(data->irq);
91 static int ia64_msi_retrigger_irq(struct irq_data *data)
93 unsigned int vector = irq_to_vector(data->irq);
94 ia64_resend_irq(vector);
100 * Generic ops used on most IA64 platforms.
102 static struct irq_chip ia64_msi_chip = {
104 .irq_mask = pci_msi_mask_irq,
105 .irq_unmask = pci_msi_unmask_irq,
106 .irq_ack = ia64_ack_msi_irq,
108 .irq_set_affinity = ia64_set_msi_irq_affinity,
110 .irq_retrigger = ia64_msi_retrigger_irq,
114 int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
116 if (platform_setup_msi_irq)
117 return platform_setup_msi_irq(pdev, desc);
119 return ia64_setup_msi_irq(pdev, desc);
122 void arch_teardown_msi_irq(unsigned int irq)
124 if (platform_teardown_msi_irq)
125 return platform_teardown_msi_irq(irq);
127 return ia64_teardown_msi_irq(irq);
130 #ifdef CONFIG_INTEL_IOMMU
132 static int dmar_msi_set_affinity(struct irq_data *data,
133 const struct cpumask *mask, bool force)
135 unsigned int irq = data->irq;
136 struct irq_cfg *cfg = irq_cfg + irq;
138 int cpu = cpumask_first_and(mask, cpu_online_mask);
140 if (irq_prepare_move(irq, cpu))
143 dmar_msi_read(irq, &msg);
145 msg.data &= ~MSI_DATA_VECTOR_MASK;
146 msg.data |= MSI_DATA_VECTOR(cfg->vector);
147 msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
148 msg.address_lo |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu));
150 dmar_msi_write(irq, &msg);
151 cpumask_copy(irq_data_get_affinity_mask(data), mask);
155 #endif /* CONFIG_SMP */
157 static struct irq_chip dmar_msi_type = {
159 .irq_unmask = dmar_msi_unmask,
160 .irq_mask = dmar_msi_mask,
161 .irq_ack = ia64_ack_msi_irq,
163 .irq_set_affinity = dmar_msi_set_affinity,
165 .irq_retrigger = ia64_msi_retrigger_irq,
169 msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
171 struct irq_cfg *cfg = irq_cfg + irq;
174 dest = cpu_physical_id(cpumask_first_and(&(irq_to_domain(irq)),
180 MSI_ADDR_DEST_MODE_PHYS |
181 MSI_ADDR_REDIRECTION_CPU |
182 MSI_ADDR_DEST_ID_CPU(dest);
185 MSI_DATA_TRIGGER_EDGE |
186 MSI_DATA_LEVEL_ASSERT |
187 MSI_DATA_DELIVERY_FIXED |
188 MSI_DATA_VECTOR(cfg->vector);
191 int dmar_alloc_hwirq(int id, int node, void *arg)
198 irq_set_handler_data(irq, arg);
199 irq_set_chip_and_handler_name(irq, &dmar_msi_type,
200 handle_edge_irq, "edge");
201 msi_compose_msg(NULL, irq, &msg);
202 dmar_msi_write(irq, &msg);
208 void dmar_free_hwirq(int irq)
210 irq_set_handler_data(irq, NULL);
213 #endif /* CONFIG_INTEL_IOMMU */