drivers/staging/vme/vme_bridge.h

   1 #ifndef _VME_BRIDGE_H_
   2 #define _VME_BRIDGE_H_
   3
   4 #define VME_CRCSR_BUF_SIZE (508*1024)
   5 /*
   6  * Resource structures
   7  */
   8 struct 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         vme_address_t address_attr;
  19         vme_cycle_t cycle_attr;
  20         vme_width_t width_attr;
  21         struct resource bus_resource;
  22         void __iomem *kern_base;
  23 };
  24
  25 struct vme_slave_resource {
  26         struct list_head list;
  27         struct vme_bridge *parent;
  28         struct mutex mtx;
  29         int locked;
  30         int number;
  31         vme_address_t address_attr;
  32         vme_cycle_t cycle_attr;
  33 };
  34
  35 struct vme_dma_pattern {
  36         u32 pattern;
  37         vme_pattern_t type;
  38 };
  39
  40 struct vme_dma_pci {
  41         dma_addr_t address;
  42 };
  43
  44 struct vme_dma_vme {
  45         unsigned long long address;
  46         vme_address_t aspace;
  47         vme_cycle_t cycle;
  48         vme_width_t dwidth;
  49 };
  50
  51 struct 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
  58 struct 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         vme_dma_route_t route_attr;
  67 };
  68
  69 struct 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
  78 struct vme_bus_error {
  79         struct list_head list;
  80         unsigned long long address;
  81         u32 attributes;
  82 };
  83
  84 struct vme_callback {
  85         void (*func)(int, int, void*);
  86         void *priv_data;
  87 };
  88
  89 struct 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  */
 101 struct 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                 vme_address_t *, vme_cycle_t *);
 126         int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
 127                 unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
 128
 129         /* Master Functions */
 130         int (*master_get) (struct vme_master_resource *, int *,
 131                 unsigned long long *, unsigned long long *, vme_address_t *,
 132                 vme_cycle_t *, vme_width_t *);
 133         int (*master_set) (struct vme_master_resource *, int,
 134                 unsigned long long, unsigned long long,  vme_address_t,
 135                 vme_cycle_t, vme_width_t);
 136         ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
 137                 loff_t);
 138         ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
 139                 loff_t);
 140         unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
 141                 unsigned int, unsigned int, loff_t);
 142
 143         /* DMA Functions */
 144         int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
 145                 struct vme_dma_attr *, size_t);
 146         int (*dma_list_exec) (struct vme_dma_list *);
 147         int (*dma_list_empty) (struct vme_dma_list *);
 148
 149         /* Interrupt Functions */
 150         void (*irq_set) (struct vme_bridge *, int, int, int);
 151         int (*irq_generate) (struct vme_bridge *, int, int);
 152
 153         /* Location monitor functions */
 154         int (*lm_set) (struct vme_lm_resource *, unsigned long long,
 155                 vme_address_t, vme_cycle_t);
 156         int (*lm_get) (struct vme_lm_resource *, unsigned long long *,
 157                 vme_address_t *, vme_cycle_t *);
 158         int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
 159         int (*lm_detach) (struct vme_lm_resource *, int);
 160
 161         /* CR/CSR space functions */
 162         int (*slot_get) (struct vme_bridge *);
 163
 164         /* Bridge parent interface */
 165         void *(*alloc_consistent)(struct device *dev, size_t size,
 166                 dma_addr_t *dma);
 167         void (*free_consistent)(struct device *dev, size_t size,
 168                 void *vaddr, dma_addr_t dma);
 169 };
 170
 171 void vme_irq_handler(struct vme_bridge *, int, int);
 172
 173 int vme_register_bridge(struct vme_bridge *);
 174 void vme_unregister_bridge(struct vme_bridge *);
 175
 176 #endif /* _VME_BRIDGE_H_ */