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 pci_resource;   /* XXX Rename to be bus agnostic */
  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 };
  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  * Currently we assume that all chips are PCI-based
 102  */
 103 struct vme_bridge {
 104         char name[VMENAMSIZ];
 105         int num;
 106         struct list_head master_resources;
 107         struct list_head slave_resources;
 108         struct list_head dma_resources;
 109         struct list_head lm_resources;
 110
 111         struct list_head vme_errors;    /* List for errors generated on VME */
 112
 113         /* Bridge Info - XXX Move to private structure? */
 114         struct device *parent;  /* Generic device struct (pdev->dev for PCI) */
 115         void * base;            /* Base Address of device registers */
 116
 117         struct device dev[VME_SLOTS_MAX];       /* Device registered with
 118                                                  * device model on VME bus
 119                                                  */
 120
 121         /* Interrupt callbacks */
 122         struct vme_irq irq[7];
 123
 124         /* Slave Functions */
 125         int (*slave_get) (struct vme_slave_resource *, int *,
 126                 unsigned long long *, unsigned long long *, dma_addr_t *,
 127                 vme_address_t *, vme_cycle_t *);
 128         int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
 129                 unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
 130
 131         /* Master Functions */
 132         int (*master_get) (struct vme_master_resource *, int *,
 133                 unsigned long long *, unsigned long long *, vme_address_t *,
 134                 vme_cycle_t *, vme_width_t *);
 135         int (*master_set) (struct vme_master_resource *, int,
 136                 unsigned long long, unsigned long long,  vme_address_t,
 137                 vme_cycle_t, vme_width_t);
 138         ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
 139                 loff_t);
 140         ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
 141                 loff_t);
 142         unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
 143                 unsigned int, unsigned int, loff_t);
 144
 145         /* DMA Functions */
 146         int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
 147                 struct vme_dma_attr *, size_t);
 148         int (*dma_list_exec) (struct vme_dma_list *);
 149         int (*dma_list_empty) (struct vme_dma_list *);
 150
 151         /* Interrupt Functions */
 152         int (*request_irq) (int, int, void (*cback)(int, int, void*), void *);
 153         void (*free_irq) (int, int);
 154         int (*generate_irq) (int, int);
 155
 156         /* Location monitor functions */
 157         int (*lm_set) (struct vme_lm_resource *, unsigned long long,
 158                 vme_address_t, vme_cycle_t);
 159         int (*lm_get) (struct vme_lm_resource *, unsigned long long *,
 160                 vme_address_t *, vme_cycle_t *);
 161         int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
 162         int (*lm_detach) (struct vme_lm_resource *, int);
 163
 164         /* CR/CSR space functions */
 165         int (*slot_get) (void);
 166         /* Use standard master read and write functions to access CR/CSR */
 167
 168 #if 0
 169         int (*set_prefetch) (void);
 170         int (*get_prefetch) (void);
 171         int (*set_arbiter) (void);
 172         int (*get_arbiter) (void);
 173         int (*set_requestor) (void);
 174         int (*get_requestor) (void);
 175 #endif
 176 };
 177
 178 int vme_register_bridge (struct vme_bridge *);
 179 void vme_unregister_bridge (struct vme_bridge *);
 180
 181 #endif /* _VME_BRIDGE_H_ */
 182
 183 #if 0
 184 /*
 185  *  VMEbus GET INFO Arg Structure
 186  */
 187 struct vmeInfoCfg {
 188         int vmeSlotNum;         /*  VME slot number of interest */
 189         int boardResponded;     /* Board responded */
 190         char sysConFlag;        /*  System controller flag */
 191         int vmeControllerID;    /*  Vendor/device ID of VME bridge */
 192         int vmeControllerRev;   /*  Revision of VME bridge */
 193         char osName[8];         /*  Name of OS e.g. "Linux" */
 194         int vmeSharedDataValid; /*  Validity of data struct */
 195         int vmeDriverRev;       /*  Revision of VME driver */
 196         unsigned int vmeAddrHi[8];      /* Address on VME bus */
 197         unsigned int vmeAddrLo[8];      /* Address on VME bus */
 198         unsigned int vmeSize[8];        /* Size on VME bus */
 199         unsigned int vmeAm[8];  /* Address modifier on VME bus */
 200         int reserved;           /* For future use */
 201 };
 202 typedef struct vmeInfoCfg vmeInfoCfg_t;
 203
 204 /*
 205  *  VMEbus Requester Arg Structure
 206  */
 207 struct vmeRequesterCfg {
 208         int requestLevel;       /*  Requester Bus Request Level */
 209         char fairMode;          /*  Requester Fairness Mode Indicator */
 210         int releaseMode;        /*  Requester Bus Release Mode */
 211         int timeonTimeoutTimer; /*  Master Time-on Time-out Timer */
 212         int timeoffTimeoutTimer;        /*  Master Time-off Time-out Timer */
 213         int reserved;           /* For future use */
 214 };
 215 typedef struct vmeRequesterCfg vmeRequesterCfg_t;
 216
 217 /*
 218  *  VMEbus Arbiter Arg Structure
 219  */
 220 struct vmeArbiterCfg {
 221         vme_arbitration_t arbiterMode;  /*  Arbitration Scheduling Algorithm */
 222         char arbiterTimeoutFlag;        /*  Arbiter Time-out Timer Indicator */
 223         int globalTimeoutTimer; /*  VMEbus Global Time-out Timer */
 224         char noEarlyReleaseFlag;        /*  No Early Release on BBUSY */
 225         int reserved;           /* For future use */
 226 };
 227 typedef struct vmeArbiterCfg vmeArbiterCfg_t;
 228
 229
 230 /*
 231  *  VMEbus RMW Configuration Data
 232  */
 233 struct vmeRmwCfg {
 234         unsigned int targetAddrU;       /*  VME Address (Upper) to trigger RMW cycle */
 235         unsigned int targetAddr;        /*  VME Address (Lower) to trigger RMW cycle */
 236         vme_address_t addrSpace;        /*  VME Address Space */
 237         int enableMask;         /*  Bit mask defining the bits of interest */
 238         int compareData;        /*  Data to be compared with the data read */
 239         int swapData;           /*  Data written to the VMEbus on success */
 240         int maxAttempts;        /*  Maximum times to try */
 241         int numAttempts;        /*  Number of attempts before success */
 242         int reserved;           /* For future use */
 243
 244 };
 245 typedef struct vmeRmwCfg vmeRmwCfg_t;
 246
 247 /*
 248  *  VMEbus Location Monitor Arg Structure
 249  */
 250 struct vmeLmCfg {
 251         unsigned int addrU;     /*  Location Monitor Address upper */
 252         unsigned int addr;      /*  Location Monitor Address lower */
 253         vme_address_t addrSpace;        /*  Address Space */
 254         int userAccessType;     /*  User/Supervisor Access Type */
 255         int dataAccessType;     /*  Data/Program Access Type */
 256         int lmWait;             /* Time to wait for access */
 257         int lmEvents;           /* Lm event mask */
 258         int reserved;           /* For future use */
 259 };
 260 typedef struct vmeLmCfg vmeLmCfg_t;
 261 #endif