linux/drivers/vme/vme_bridge.h
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   1#ifndef _VME_BRIDGE_H_
   2#define _VME_BRIDGE_H_
   3
   4#define VME_CRCSR_BUF_SIZE (508*1024)
   5/*
   6 * Resource structures
   7 */
   8struct vme_master_resource {
   9        struct list_head list;
  10        struct vme_bridge *parent;
  11        /*
  12         * We are likely to need to access the VME bus in interrupt context, so
  13         * protect master routines with a spinlock rather than a mutex.
  14         */
  15        spinlock_t lock;
  16        int locked;
  17        int number;
  18        u32 address_attr;
  19        u32 cycle_attr;
  20        u32 width_attr;
  21        struct resource bus_resource;
  22        void __iomem *kern_base;
  23};
  24
  25struct vme_slave_resource {
  26        struct list_head list;
  27        struct vme_bridge *parent;
  28        struct mutex mtx;
  29        int locked;
  30        int number;
  31        u32 address_attr;
  32        u32 cycle_attr;
  33};
  34
  35struct vme_dma_pattern {
  36        u32 pattern;
  37        u32 type;
  38};
  39
  40struct vme_dma_pci {
  41        dma_addr_t address;
  42};
  43
  44struct vme_dma_vme {
  45        unsigned long long address;
  46        u32 aspace;
  47        u32 cycle;
  48        u32 dwidth;
  49};
  50
  51struct vme_dma_list {
  52        struct list_head list;
  53        struct vme_dma_resource *parent;
  54        struct list_head entries;
  55        struct mutex mtx;
  56};
  57
  58struct vme_dma_resource {
  59        struct list_head list;
  60        struct vme_bridge *parent;
  61        struct mutex mtx;
  62        int locked;
  63        int number;
  64        struct list_head pending;
  65        struct list_head running;
  66        u32 route_attr;
  67};
  68
  69struct vme_lm_resource {
  70        struct list_head list;
  71        struct vme_bridge *parent;
  72        struct mutex mtx;
  73        int locked;
  74        int number;
  75        int monitors;
  76};
  77
  78struct vme_bus_error {
  79        struct list_head list;
  80        unsigned long long address;
  81        u32 attributes;
  82};
  83
  84struct vme_callback {
  85        void (*func)(int, int, void*);
  86        void *priv_data;
  87};
  88
  89struct vme_irq {
  90        int count;
  91        struct vme_callback callback[255];
  92};
  93
  94/* Allow 16 characters for name (including null character) */
  95#define VMENAMSIZ 16
  96
  97/* This structure stores all the information about one bridge
  98 * The structure should be dynamically allocated by the driver and one instance
  99 * of the structure should be present for each VME chip present in the system.
 100 */
 101struct vme_bridge {
 102        char name[VMENAMSIZ];
 103        int num;
 104        struct list_head master_resources;
 105        struct list_head slave_resources;
 106        struct list_head dma_resources;
 107        struct list_head lm_resources;
 108
 109        struct list_head vme_errors;    /* List for errors generated on VME */
 110        struct list_head devices;       /* List of devices on this bridge */
 111
 112        /* Bridge Info - XXX Move to private structure? */
 113        struct device *parent;  /* Parent device (eg. pdev->dev for PCI) */
 114        void *driver_priv;      /* Private pointer for the bridge driver */
 115        struct list_head bus_list; /* list of VME buses */
 116
 117        /* Interrupt callbacks */
 118        struct vme_irq irq[7];
 119        /* Locking for VME irq callback configuration */
 120        struct mutex irq_mtx;
 121
 122        /* Slave Functions */
 123        int (*slave_get) (struct vme_slave_resource *, int *,
 124                unsigned long long *, unsigned long long *, dma_addr_t *,
 125                u32 *, u32 *);
 126        int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
 127                unsigned long long, dma_addr_t, u32, u32);
 128
 129        /* Master Functions */
 130        int (*master_get) (struct vme_master_resource *, int *,
 131                unsigned long long *, unsigned long long *, u32 *, u32 *,
 132                u32 *);
 133        int (*master_set) (struct vme_master_resource *, int,
 134                unsigned long long, unsigned long long,  u32, u32, u32);
 135        ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
 136                loff_t);
 137        ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
 138                loff_t);
 139        unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
 140                unsigned int, unsigned int, loff_t);
 141
 142        /* DMA Functions */
 143        int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
 144                struct vme_dma_attr *, size_t);
 145        int (*dma_list_exec) (struct vme_dma_list *);
 146        int (*dma_list_empty) (struct vme_dma_list *);
 147
 148        /* Interrupt Functions */
 149        void (*irq_set) (struct vme_bridge *, int, int, int);
 150        int (*irq_generate) (struct vme_bridge *, int, int);
 151
 152        /* Location monitor functions */
 153        int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32);
 154        int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *,
 155                u32 *);
 156        int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
 157        int (*lm_detach) (struct vme_lm_resource *, int);
 158
 159        /* CR/CSR space functions */
 160        int (*slot_get) (struct vme_bridge *);
 161
 162        /* Bridge parent interface */
 163        void *(*alloc_consistent)(struct device *dev, size_t size,
 164                dma_addr_t *dma);
 165        void (*free_consistent)(struct device *dev, size_t size,
 166                void *vaddr, dma_addr_t dma);
 167};
 168
 169void vme_irq_handler(struct vme_bridge *, int, int);
 170
 171int vme_register_bridge(struct vme_bridge *);
 172void vme_unregister_bridge(struct vme_bridge *);
 173
 174#endif /* _VME_BRIDGE_H_ */
 175
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