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Diffstat (limited to 'include/linux/pci-epc.h')
-rw-r--r--include/linux/pci-epc.h24
1 files changed, 21 insertions, 3 deletions
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index af657ca58b70..37dab8116901 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -17,6 +17,7 @@ enum pci_epc_irq_type {
PCI_EPC_IRQ_UNKNOWN,
PCI_EPC_IRQ_LEGACY,
PCI_EPC_IRQ_MSI,
+ PCI_EPC_IRQ_MSIX,
};
/**
@@ -30,7 +31,11 @@ enum pci_epc_irq_type {
* capability register
* @get_msi: ops to get the number of MSI interrupts allocated by the RC from
* the MSI capability register
- * @raise_irq: ops to raise a legacy or MSI interrupt
+ * @set_msix: ops to set the requested number of MSI-X interrupts in the
+ * MSI-X capability register
+ * @get_msix: ops to get the number of MSI-X interrupts allocated by the RC
+ * from the MSI-X capability register
+ * @raise_irq: ops to raise a legacy, MSI or MSI-X interrupt
* @start: ops to start the PCI link
* @stop: ops to stop the PCI link
* @owner: the module owner containing the ops
@@ -48,8 +53,10 @@ struct pci_epc_ops {
phys_addr_t addr);
int (*set_msi)(struct pci_epc *epc, u8 func_no, u8 interrupts);
int (*get_msi)(struct pci_epc *epc, u8 func_no);
+ int (*set_msix)(struct pci_epc *epc, u8 func_no, u16 interrupts);
+ int (*get_msix)(struct pci_epc *epc, u8 func_no);
int (*raise_irq)(struct pci_epc *epc, u8 func_no,
- enum pci_epc_irq_type type, u8 interrupt_num);
+ enum pci_epc_irq_type type, u16 interrupt_num);
int (*start)(struct pci_epc *epc);
void (*stop)(struct pci_epc *epc);
struct module *owner;
@@ -90,8 +97,17 @@ struct pci_epc {
struct config_group *group;
/* spinlock to protect against concurrent access of EP controller */
spinlock_t lock;
+ unsigned int features;
};
+#define EPC_FEATURE_NO_LINKUP_NOTIFIER BIT(0)
+#define EPC_FEATURE_BAR_MASK (BIT(1) | BIT(2) | BIT(3))
+#define EPC_FEATURE_MSIX_AVAILABLE BIT(4)
+#define EPC_FEATURE_SET_BAR(features, bar) \
+ (features |= (EPC_FEATURE_BAR_MASK & (bar << 1)))
+#define EPC_FEATURE_GET_BAR(features) \
+ ((features & EPC_FEATURE_BAR_MASK) >> 1)
+
#define to_pci_epc(device) container_of((device), struct pci_epc, dev)
#define pci_epc_create(dev, ops) \
@@ -136,8 +152,10 @@ void pci_epc_unmap_addr(struct pci_epc *epc, u8 func_no,
phys_addr_t phys_addr);
int pci_epc_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts);
int pci_epc_get_msi(struct pci_epc *epc, u8 func_no);
+int pci_epc_set_msix(struct pci_epc *epc, u8 func_no, u16 interrupts);
+int pci_epc_get_msix(struct pci_epc *epc, u8 func_no);
int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no,
- enum pci_epc_irq_type type, u8 interrupt_num);
+ enum pci_epc_irq_type type, u16 interrupt_num);
int pci_epc_start(struct pci_epc *epc);
void pci_epc_stop(struct pci_epc *epc);
struct pci_epc *pci_epc_get(const char *epc_name);