https://github.com/torvalds/linux
Tip revision: 55639353a0035052d9ea6cfe4dde0ac7fcbb2c9f authored by Linus Torvalds on 18 December 2009, 01:14:40 UTC
Linux 2.6.33-rc1
Linux 2.6.33-rc1
Tip revision: 5563935
vme_bridge.h
#ifndef _VME_BRIDGE_H_
#define _VME_BRIDGE_H_
#define VME_CRCSR_BUF_SIZE (508*1024)
#define VME_SLOTS_MAX 32
/*
* 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;
vme_address_t address_attr;
vme_cycle_t cycle_attr;
vme_width_t width_attr;
struct resource pci_resource; /* XXX Rename to be bus agnostic */
void *kern_base;
};
struct vme_slave_resource {
struct list_head list;
struct vme_bridge *parent;
struct mutex mtx;
int locked;
int number;
vme_address_t address_attr;
vme_cycle_t cycle_attr;
};
struct vme_dma_pattern {
u32 pattern;
vme_pattern_t type;
};
struct vme_dma_pci {
dma_addr_t address;
};
struct vme_dma_vme {
unsigned long long address;
vme_address_t aspace;
vme_cycle_t cycle;
vme_width_t 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;
};
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.
*
* Currently we assume that all chips are PCI-based
*/
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 */
/* Bridge Info - XXX Move to private structure? */
struct device *parent; /* Generic device struct (pdev->dev for PCI) */
void * base; /* Base Address of device registers */
struct device dev[VME_SLOTS_MAX]; /* Device registered with
* device model on VME bus
*/
/* 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 *,
vme_address_t *, vme_cycle_t *);
int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
/* Master Functions */
int (*master_get) (struct vme_master_resource *, int *,
unsigned long long *, unsigned long long *, vme_address_t *,
vme_cycle_t *, vme_width_t *);
int (*master_set) (struct vme_master_resource *, int,
unsigned long long, unsigned long long, vme_address_t,
vme_cycle_t, vme_width_t);
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) (int, int, int);
int (*irq_generate) (int, int);
/* Location monitor functions */
int (*lm_set) (struct vme_lm_resource *, unsigned long long,
vme_address_t, vme_cycle_t);
int (*lm_get) (struct vme_lm_resource *, unsigned long long *,
vme_address_t *, vme_cycle_t *);
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) (void);
/* Use standard master read and write functions to access CR/CSR */
#if 0
int (*set_prefetch) (void);
int (*get_prefetch) (void);
int (*set_arbiter) (void);
int (*get_arbiter) (void);
int (*set_requestor) (void);
int (*get_requestor) (void);
#endif
};
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_ */
#if 0
/*
* VMEbus GET INFO Arg Structure
*/
struct vmeInfoCfg {
int vmeSlotNum; /* VME slot number of interest */
int boardResponded; /* Board responded */
char sysConFlag; /* System controller flag */
int vmeControllerID; /* Vendor/device ID of VME bridge */
int vmeControllerRev; /* Revision of VME bridge */
char osName[8]; /* Name of OS e.g. "Linux" */
int vmeSharedDataValid; /* Validity of data struct */
int vmeDriverRev; /* Revision of VME driver */
unsigned int vmeAddrHi[8]; /* Address on VME bus */
unsigned int vmeAddrLo[8]; /* Address on VME bus */
unsigned int vmeSize[8]; /* Size on VME bus */
unsigned int vmeAm[8]; /* Address modifier on VME bus */
int reserved; /* For future use */
};
typedef struct vmeInfoCfg vmeInfoCfg_t;
/*
* VMEbus Requester Arg Structure
*/
struct vmeRequesterCfg {
int requestLevel; /* Requester Bus Request Level */
char fairMode; /* Requester Fairness Mode Indicator */
int releaseMode; /* Requester Bus Release Mode */
int timeonTimeoutTimer; /* Master Time-on Time-out Timer */
int timeoffTimeoutTimer; /* Master Time-off Time-out Timer */
int reserved; /* For future use */
};
typedef struct vmeRequesterCfg vmeRequesterCfg_t;
/*
* VMEbus Arbiter Arg Structure
*/
struct vmeArbiterCfg {
vme_arbitration_t arbiterMode; /* Arbitration Scheduling Algorithm */
char arbiterTimeoutFlag; /* Arbiter Time-out Timer Indicator */
int globalTimeoutTimer; /* VMEbus Global Time-out Timer */
char noEarlyReleaseFlag; /* No Early Release on BBUSY */
int reserved; /* For future use */
};
typedef struct vmeArbiterCfg vmeArbiterCfg_t;
/*
* VMEbus RMW Configuration Data
*/
struct vmeRmwCfg {
unsigned int targetAddrU; /* VME Address (Upper) to trigger RMW cycle */
unsigned int targetAddr; /* VME Address (Lower) to trigger RMW cycle */
vme_address_t addrSpace; /* VME Address Space */
int enableMask; /* Bit mask defining the bits of interest */
int compareData; /* Data to be compared with the data read */
int swapData; /* Data written to the VMEbus on success */
int maxAttempts; /* Maximum times to try */
int numAttempts; /* Number of attempts before success */
int reserved; /* For future use */
};
typedef struct vmeRmwCfg vmeRmwCfg_t;
/*
* VMEbus Location Monitor Arg Structure
*/
struct vmeLmCfg {
unsigned int addrU; /* Location Monitor Address upper */
unsigned int addr; /* Location Monitor Address lower */
vme_address_t addrSpace; /* Address Space */
int userAccessType; /* User/Supervisor Access Type */
int dataAccessType; /* Data/Program Access Type */
int lmWait; /* Time to wait for access */
int lmEvents; /* Lm event mask */
int reserved; /* For future use */
};
typedef struct vmeLmCfg vmeLmCfg_t;
#endif