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 u32 address_attr; 19 u32 cycle_attr; 20 u32 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 u32 address_attr; 32 u32 cycle_attr; 33 }; 34 35 struct vme_dma_pattern { 36 u32 pattern; 37 u32 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 u32 aspace; 47 u32 cycle; 48 u32 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 u32 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 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 }; 168 169 void vme_irq_handler(struct vme_bridge *, int, int); 170 171 int vme_register_bridge(struct vme_bridge *); 172 void vme_unregister_bridge(struct vme_bridge *); 173 174 #endif /* _VME_BRIDGE_H_ */ 175