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