X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fvme%2Fvme_bridge.h;fp=kernel%2Fdrivers%2Fvme%2Fvme_bridge.h;h=934949abd7457c8072c47844f7ea555c05e5bb4e;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git

diff --git a/kernel/drivers/vme/vme_bridge.h b/kernel/drivers/vme/vme_bridge.h
new file mode 100644
index 000000000..934949abd
--- /dev/null
+++ b/kernel/drivers/vme/vme_bridge.h
@@ -0,0 +1,174 @@
+#ifndef _VME_BRIDGE_H_
+#define _VME_BRIDGE_H_
+
+#define VME_CRCSR_BUF_SIZE (508*1024)
+/*
+ * Resource structures
+ */
+struct vme_master_resource {
+	struct list_head list;
+	struct vme_bridge *parent;
+	/*
+	 * We are likely to need to access the VME bus in interrupt context, so
+	 * protect master routines with a spinlock rather than a mutex.
+	 */
+	spinlock_t lock;
+	int locked;
+	int number;
+	u32 address_attr;
+	u32 cycle_attr;
+	u32 width_attr;
+	struct resource bus_resource;
+	void __iomem *kern_base;
+};
+
+struct vme_slave_resource {
+	struct list_head list;
+	struct vme_bridge *parent;
+	struct mutex mtx;
+	int locked;
+	int number;
+	u32 address_attr;
+	u32 cycle_attr;
+};
+
+struct vme_dma_pattern {
+	u32 pattern;
+	u32 type;
+};
+
+struct vme_dma_pci {
+	dma_addr_t address;
+};
+
+struct vme_dma_vme {
+	unsigned long long address;
+	u32 aspace;
+	u32 cycle;
+	u32 dwidth;
+};
+
+struct vme_dma_list {
+	struct list_head list;
+	struct vme_dma_resource *parent;
+	struct list_head entries;
+	struct mutex mtx;
+};
+
+struct vme_dma_resource {
+	struct list_head list;
+	struct vme_bridge *parent;
+	struct mutex mtx;
+	int locked;
+	int number;
+	struct list_head pending;
+	struct list_head running;
+	u32 route_attr;
+};
+
+struct vme_lm_resource {
+	struct list_head list;
+	struct vme_bridge *parent;
+	struct mutex mtx;
+	int locked;
+	int number;
+	int monitors;
+};
+
+struct vme_bus_error {
+	struct list_head list;
+	unsigned long long address;
+	u32 attributes;
+};
+
+struct vme_callback {
+	void (*func)(int, int, void*);
+	void *priv_data;
+};
+
+struct vme_irq {
+	int count;
+	struct vme_callback callback[255];
+};
+
+/* Allow 16 characters for name (including null character) */
+#define VMENAMSIZ 16
+
+/* This structure stores all the information about one bridge
+ * The structure should be dynamically allocated by the driver and one instance
+ * of the structure should be present for each VME chip present in the system.
+ */
+struct vme_bridge {
+	char name[VMENAMSIZ];
+	int num;
+	struct list_head master_resources;
+	struct list_head slave_resources;
+	struct list_head dma_resources;
+	struct list_head lm_resources;
+
+	struct list_head vme_errors;	/* List for errors generated on VME */
+	struct list_head devices;	/* List of devices on this bridge */
+
+	/* Bridge Info - XXX Move to private structure? */
+	struct device *parent;	/* Parent device (eg. pdev->dev for PCI) */
+	void *driver_priv;	/* Private pointer for the bridge driver */
+	struct list_head bus_list; /* list of VME buses */
+
+	/* Interrupt callbacks */
+	struct vme_irq irq[7];
+	/* Locking for VME irq callback configuration */
+	struct mutex irq_mtx;
+
+	/* Slave Functions */
+	int (*slave_get) (struct vme_slave_resource *, int *,
+		unsigned long long *, unsigned long long *, dma_addr_t *,
+		u32 *, u32 *);
+	int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
+		unsigned long long, dma_addr_t, u32, u32);
+
+	/* Master Functions */
+	int (*master_get) (struct vme_master_resource *, int *,
+		unsigned long long *, unsigned long long *, u32 *, u32 *,
+		u32 *);
+	int (*master_set) (struct vme_master_resource *, int,
+		unsigned long long, unsigned long long,  u32, u32, u32);
+	ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
+		loff_t);
+	ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
+		loff_t);
+	unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
+		unsigned int, unsigned int, loff_t);
+
+	/* DMA Functions */
+	int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
+		struct vme_dma_attr *, size_t);
+	int (*dma_list_exec) (struct vme_dma_list *);
+	int (*dma_list_empty) (struct vme_dma_list *);
+
+	/* Interrupt Functions */
+	void (*irq_set) (struct vme_bridge *, int, int, int);
+	int (*irq_generate) (struct vme_bridge *, int, int);
+
+	/* Location monitor functions */
+	int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32);
+	int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *,
+		u32 *);
+	int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
+	int (*lm_detach) (struct vme_lm_resource *, int);
+
+	/* CR/CSR space functions */
+	int (*slot_get) (struct vme_bridge *);
+
+	/* Bridge parent interface */
+	void *(*alloc_consistent)(struct device *dev, size_t size,
+		dma_addr_t *dma);
+	void (*free_consistent)(struct device *dev, size_t size,
+		void *vaddr, dma_addr_t dma);
+};
+
+void vme_irq_handler(struct vme_bridge *, int, int);
+
+int vme_register_bridge(struct vme_bridge *);
+void vme_unregister_bridge(struct vme_bridge *);
+
+#endif /* _VME_BRIDGE_H_ */