1 #ifndef _VME_BRIDGE_H_ 2 #define _VME_BRIDGE_H_ 3 4 #include <linux/vme.h> 5 6 #define VME_CRCSR_BUF_SIZE (508*1024) 7 /* 8 * Resource structures 9 */ 10 struct vme_master_resource { 11 struct list_head list; 12 struct vme_bridge *parent; 13 /* 14 * We are likely to need to access the VME bus in interrupt context, so 15 * protect master routines with a spinlock rather than a mutex. 16 */ 17 spinlock_t lock; 18 int locked; 19 int number; 20 u32 address_attr; 21 u32 cycle_attr; 22 u32 width_attr; 23 struct resource bus_resource; 24 void __iomem *kern_base; 25 }; 26 27 struct vme_slave_resource { 28 struct list_head list; 29 struct vme_bridge *parent; 30 struct mutex mtx; 31 int locked; 32 int number; 33 u32 address_attr; 34 u32 cycle_attr; 35 }; 36 37 struct vme_dma_pattern { 38 u32 pattern; 39 u32 type; 40 }; 41 42 struct vme_dma_pci { 43 dma_addr_t address; 44 }; 45 46 struct vme_dma_vme { 47 unsigned long long address; 48 u32 aspace; 49 u32 cycle; 50 u32 dwidth; 51 }; 52 53 struct vme_dma_list { 54 struct list_head list; 55 struct vme_dma_resource *parent; 56 struct list_head entries; 57 struct mutex mtx; 58 }; 59 60 struct vme_dma_resource { 61 struct list_head list; 62 struct vme_bridge *parent; 63 struct mutex mtx; 64 int locked; 65 int number; 66 struct list_head pending; 67 struct list_head running; 68 u32 route_attr; 69 }; 70 71 struct vme_lm_resource { 72 struct list_head list; 73 struct vme_bridge *parent; 74 struct mutex mtx; 75 int locked; 76 int number; 77 int monitors; 78 }; 79 80 struct vme_error_handler { 81 struct list_head list; 82 unsigned long long start; /* Beginning of error window */ 83 unsigned long long end; /* End of error window */ 84 unsigned long long first_error; /* Address of the first error */ 85 u32 aspace; /* Address space of error window*/ 86 unsigned num_errors; /* Number of errors */ 87 }; 88 89 struct vme_callback { 90 void (*func)(int, int, void*); 91 void *priv_data; 92 }; 93 94 struct vme_irq { 95 int count; 96 struct vme_callback callback[VME_NUM_STATUSID]; 97 }; 98 99 /* Allow 16 characters for name (including null character) */ 100 #define VMENAMSIZ 16 101 102 /* This structure stores all the information about one bridge 103 * The structure should be dynamically allocated by the driver and one instance 104 * of the structure should be present for each VME chip present in the system. 105 */ 106 struct vme_bridge { 107 char name[VMENAMSIZ]; 108 int num; 109 struct list_head master_resources; 110 struct list_head slave_resources; 111 struct list_head dma_resources; 112 struct list_head lm_resources; 113 114 /* List for registered errors handlers */ 115 struct list_head vme_error_handlers; 116 /* List of devices on this bridge */ 117 struct list_head devices; 118 119 /* Bridge Info - XXX Move to private structure? */ 120 struct device *parent; /* Parent device (eg. pdev->dev for PCI) */ 121 void *driver_priv; /* Private pointer for the bridge driver */ 122 struct list_head bus_list; /* list of VME buses */ 123 124 /* Interrupt callbacks */ 125 struct vme_irq irq[7]; 126 /* Locking for VME irq callback configuration */ 127 struct mutex irq_mtx; 128 129 /* Slave Functions */ 130 int (*slave_get) (struct vme_slave_resource *, int *, 131 unsigned long long *, unsigned long long *, dma_addr_t *, 132 u32 *, u32 *); 133 int (*slave_set) (struct vme_slave_resource *, int, unsigned long long, 134 unsigned long long, dma_addr_t, u32, u32); 135 136 /* Master Functions */ 137 int (*master_get) (struct vme_master_resource *, int *, 138 unsigned long long *, unsigned long long *, u32 *, u32 *, 139 u32 *); 140 int (*master_set) (struct vme_master_resource *, int, 141 unsigned long long, unsigned long long, u32, u32, u32); 142 ssize_t (*master_read) (struct vme_master_resource *, void *, size_t, 143 loff_t); 144 ssize_t (*master_write) (struct vme_master_resource *, void *, size_t, 145 loff_t); 146 unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int, 147 unsigned int, unsigned int, loff_t); 148 149 /* DMA Functions */ 150 int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *, 151 struct vme_dma_attr *, size_t); 152 int (*dma_list_exec) (struct vme_dma_list *); 153 int (*dma_list_empty) (struct vme_dma_list *); 154 155 /* Interrupt Functions */ 156 void (*irq_set) (struct vme_bridge *, int, int, int); 157 int (*irq_generate) (struct vme_bridge *, int, int); 158 159 /* Location monitor functions */ 160 int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32); 161 int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *, 162 u32 *); 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 /* Bridge parent interface */ 170 void *(*alloc_consistent)(struct device *dev, size_t size, 171 dma_addr_t *dma); 172 void (*free_consistent)(struct device *dev, size_t size, 173 void *vaddr, dma_addr_t dma); 174 }; 175 176 void vme_bus_error_handler(struct vme_bridge *bridge, 177 unsigned long long address, int am); 178 void vme_irq_handler(struct vme_bridge *, int, int); 179 180 int vme_register_bridge(struct vme_bridge *); 181 void vme_unregister_bridge(struct vme_bridge *); 182 struct vme_error_handler *vme_register_error_handler( 183 struct vme_bridge *bridge, u32 aspace, 184 unsigned long long address, size_t len); 185 void vme_unregister_error_handler(struct vme_error_handler *handler); 186 187 #endif /* _VME_BRIDGE_H_ */ 188