diff options
Diffstat (limited to 'drivers/vme/vme_bridge.h')
| -rw-r--r-- | drivers/vme/vme_bridge.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/drivers/vme/vme_bridge.h b/drivers/vme/vme_bridge.h new file mode 100644 index 000000000000..934949abd745 --- /dev/null +++ b/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_ */ |