42fb503122
Extend the image and DMA channel resource management methods to control the location monitor resource. The location monitor should be controlled as it can only be used at a single location at a time. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
262 lines
7.3 KiB
C
262 lines
7.3 KiB
C
#ifndef _VME_BRIDGE_H_
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#define _VME_BRIDGE_H_
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#define VME_CRCSR_BUF_SIZE (508*1024)
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#define VME_SLOTS_MAX 32
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/*
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* Resource structures
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*/
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struct vme_master_resource {
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struct list_head list;
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struct vme_bridge *parent;
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/*
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* We are likely to need to access the VME bus in interrupt context, so
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* protect master routines with a spinlock rather than a mutex.
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*/
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spinlock_t lock;
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int locked;
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int number;
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vme_address_t address_attr;
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vme_cycle_t cycle_attr;
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vme_width_t width_attr;
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struct resource pci_resource; /* XXX Rename to be bus agnostic */
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void *kern_base;
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};
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struct vme_slave_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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vme_address_t address_attr;
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vme_cycle_t cycle_attr;
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};
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struct vme_dma_pattern {
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u32 pattern;
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vme_pattern_t type;
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};
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struct vme_dma_pci {
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dma_addr_t address;
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};
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struct vme_dma_vme {
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unsigned long long address;
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vme_address_t aspace;
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vme_cycle_t cycle;
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vme_width_t dwidth;
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};
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struct vme_dma_list {
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struct list_head list;
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struct vme_dma_resource *parent;
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struct list_head entries;
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struct mutex mtx;
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};
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struct vme_dma_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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struct list_head pending;
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struct list_head running;
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};
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struct vme_lm_resource {
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struct list_head list;
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struct vme_bridge *parent;
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struct mutex mtx;
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int locked;
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int number;
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int monitors;
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};
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struct vme_bus_error {
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struct list_head list;
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unsigned long long address;
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u32 attributes;
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};
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struct vme_callback {
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void (*func)(int, int, void*);
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void *priv_data;
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};
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struct vme_irq {
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int count;
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struct vme_callback callback[255];
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};
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/* Allow 16 characters for name (including null character) */
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#define VMENAMSIZ 16
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/* This structure stores all the information about one bridge
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* The structure should be dynamically allocated by the driver and one instance
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* of the structure should be present for each VME chip present in the system.
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*
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* Currently we assume that all chips are PCI-based
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*/
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struct vme_bridge {
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char name[VMENAMSIZ];
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int num;
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struct list_head master_resources;
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struct list_head slave_resources;
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struct list_head dma_resources;
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struct list_head lm_resources;
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struct list_head vme_errors; /* List for errors generated on VME */
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/* Bridge Info - XXX Move to private structure? */
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struct device *parent; /* Generic device struct (pdev->dev for PCI) */
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void * base; /* Base Address of device registers */
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struct device dev[VME_SLOTS_MAX]; /* Device registered with
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* device model on VME bus
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*/
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/* Interrupt callbacks */
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struct vme_irq irq[7];
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/* Slave Functions */
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int (*slave_get) (struct vme_slave_resource *, int *,
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unsigned long long *, unsigned long long *, dma_addr_t *,
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vme_address_t *, vme_cycle_t *);
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int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
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unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
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/* Master Functions */
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int (*master_get) (struct vme_master_resource *, int *,
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unsigned long long *, unsigned long long *, vme_address_t *,
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vme_cycle_t *, vme_width_t *);
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int (*master_set) (struct vme_master_resource *, int,
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unsigned long long, unsigned long long, vme_address_t,
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vme_cycle_t, vme_width_t);
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ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
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loff_t);
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ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
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loff_t);
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unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
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unsigned int, unsigned int, loff_t);
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/* DMA Functions */
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int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
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struct vme_dma_attr *, size_t);
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int (*dma_list_exec) (struct vme_dma_list *);
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int (*dma_list_empty) (struct vme_dma_list *);
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/* Interrupt Functions */
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int (*request_irq) (int, int, void (*cback)(int, int, void*), void *);
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void (*free_irq) (int, int);
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int (*generate_irq) (int, int);
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/* Location monitor functions */
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int (*lm_set) (struct vme_lm_resource *, unsigned long long,
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vme_address_t, vme_cycle_t);
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int (*lm_get) (struct vme_lm_resource *, unsigned long long *,
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vme_address_t *, vme_cycle_t *);
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int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
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int (*lm_detach) (struct vme_lm_resource *, int);
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/* CR/CSR space functions */
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int (*slot_get) (void);
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/* Use standard master read and write functions to access CR/CSR */
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#if 0
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int (*set_prefetch) (void);
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int (*get_prefetch) (void);
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int (*set_arbiter) (void);
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int (*get_arbiter) (void);
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int (*set_requestor) (void);
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int (*get_requestor) (void);
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#endif
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};
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int vme_register_bridge (struct vme_bridge *);
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void vme_unregister_bridge (struct vme_bridge *);
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#endif /* _VME_BRIDGE_H_ */
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#if 0
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/*
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* VMEbus GET INFO Arg Structure
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*/
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struct vmeInfoCfg {
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int vmeSlotNum; /* VME slot number of interest */
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int boardResponded; /* Board responded */
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char sysConFlag; /* System controller flag */
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int vmeControllerID; /* Vendor/device ID of VME bridge */
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int vmeControllerRev; /* Revision of VME bridge */
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char osName[8]; /* Name of OS e.g. "Linux" */
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int vmeSharedDataValid; /* Validity of data struct */
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int vmeDriverRev; /* Revision of VME driver */
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unsigned int vmeAddrHi[8]; /* Address on VME bus */
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unsigned int vmeAddrLo[8]; /* Address on VME bus */
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unsigned int vmeSize[8]; /* Size on VME bus */
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unsigned int vmeAm[8]; /* Address modifier on VME bus */
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int reserved; /* For future use */
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};
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typedef struct vmeInfoCfg vmeInfoCfg_t;
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/*
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* VMEbus Requester Arg Structure
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*/
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struct vmeRequesterCfg {
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int requestLevel; /* Requester Bus Request Level */
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char fairMode; /* Requester Fairness Mode Indicator */
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int releaseMode; /* Requester Bus Release Mode */
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int timeonTimeoutTimer; /* Master Time-on Time-out Timer */
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int timeoffTimeoutTimer; /* Master Time-off Time-out Timer */
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int reserved; /* For future use */
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};
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typedef struct vmeRequesterCfg vmeRequesterCfg_t;
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/*
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* VMEbus Arbiter Arg Structure
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*/
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struct vmeArbiterCfg {
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vme_arbitration_t arbiterMode; /* Arbitration Scheduling Algorithm */
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char arbiterTimeoutFlag; /* Arbiter Time-out Timer Indicator */
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int globalTimeoutTimer; /* VMEbus Global Time-out Timer */
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char noEarlyReleaseFlag; /* No Early Release on BBUSY */
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int reserved; /* For future use */
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};
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typedef struct vmeArbiterCfg vmeArbiterCfg_t;
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/*
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* VMEbus RMW Configuration Data
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*/
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struct vmeRmwCfg {
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unsigned int targetAddrU; /* VME Address (Upper) to trigger RMW cycle */
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unsigned int targetAddr; /* VME Address (Lower) to trigger RMW cycle */
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vme_address_t addrSpace; /* VME Address Space */
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int enableMask; /* Bit mask defining the bits of interest */
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int compareData; /* Data to be compared with the data read */
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int swapData; /* Data written to the VMEbus on success */
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int maxAttempts; /* Maximum times to try */
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int numAttempts; /* Number of attempts before success */
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int reserved; /* For future use */
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};
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typedef struct vmeRmwCfg vmeRmwCfg_t;
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/*
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* VMEbus Location Monitor Arg Structure
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*/
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struct vmeLmCfg {
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unsigned int addrU; /* Location Monitor Address upper */
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unsigned int addr; /* Location Monitor Address lower */
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vme_address_t addrSpace; /* Address Space */
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int userAccessType; /* User/Supervisor Access Type */
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int dataAccessType; /* Data/Program Access Type */
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int lmWait; /* Time to wait for access */
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int lmEvents; /* Lm event mask */
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int reserved; /* For future use */
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};
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typedef struct vmeLmCfg vmeLmCfg_t;
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#endif
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