diff options
Diffstat (limited to 'drivers/scsi/NCR5380.h')
| -rw-r--r-- | drivers/scsi/NCR5380.h | 87 |
1 files changed, 63 insertions, 24 deletions
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h index 965d92339455..3c6ce5434449 100644 --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -219,27 +219,32 @@ #define FLAG_TOSHIBA_DELAY 128 /* Allow for borken CD-ROMs */ struct NCR5380_hostdata { - NCR5380_implementation_fields; /* implementation specific */ - struct Scsi_Host *host; /* Host backpointer */ - unsigned char id_mask, id_higher_mask; /* 1 << id, all bits greater */ - unsigned char busy[8]; /* index = target, bit = lun */ - int dma_len; /* requested length of DMA */ - unsigned char last_message; /* last message OUT */ - struct scsi_cmnd *connected; /* currently connected cmnd */ - struct scsi_cmnd *selecting; /* cmnd to be connected */ - struct list_head unissued; /* waiting to be issued */ - struct list_head autosense; /* priority issue queue */ - struct list_head disconnected; /* waiting for reconnect */ - spinlock_t lock; /* protects this struct */ - int flags; - struct scsi_eh_save ses; - struct scsi_cmnd *sensing; + NCR5380_implementation_fields; /* Board-specific data */ + u8 __iomem *io; /* Remapped 5380 address */ + u8 __iomem *pdma_io; /* Remapped PDMA address */ + unsigned long poll_loops; /* Register polling limit */ + spinlock_t lock; /* Protects this struct */ + struct scsi_cmnd *connected; /* Currently connected cmnd */ + struct list_head disconnected; /* Waiting for reconnect */ + struct Scsi_Host *host; /* SCSI host backpointer */ + struct workqueue_struct *work_q; /* SCSI host work queue */ + struct work_struct main_task; /* Work item for main loop */ + int flags; /* Board-specific quirks */ + int dma_len; /* Requested length of DMA */ + int read_overruns; /* Transfer size reduction for DMA erratum */ + unsigned long io_port; /* Device IO port */ + unsigned long base; /* Device base address */ + struct list_head unissued; /* Waiting to be issued */ + struct scsi_cmnd *selecting; /* Cmnd to be connected */ + struct list_head autosense; /* Priority cmnd queue */ + struct scsi_cmnd *sensing; /* Cmnd needing autosense */ + struct scsi_eh_save ses; /* Cmnd state saved for EH */ + unsigned char busy[8]; /* Index = target, bit = lun */ + unsigned char id_mask; /* 1 << Host ID */ + unsigned char id_higher_mask; /* All bits above id_mask */ + unsigned char last_message; /* Last Message Out */ + unsigned long region_size; /* Size of address/port range */ char info[256]; - int read_overruns; /* number of bytes to cut from a - * transfer to handle chip overruns */ - struct work_struct main_task; - struct workqueue_struct *work_q; - unsigned long accesses_per_ms; /* chip register accesses per ms */ }; #ifdef __KERNEL__ @@ -252,6 +257,9 @@ struct NCR5380_cmd { #define NCR5380_PIO_CHUNK_SIZE 256 +/* Time limit (ms) to poll registers when IRQs are disabled, e.g. during PDMA */ +#define NCR5380_REG_POLL_TIME 15 + static inline struct scsi_cmnd *NCR5380_to_scmd(struct NCR5380_cmd *ncmd_ptr) { return ((struct scsi_cmnd *)ncmd_ptr) - 1; @@ -294,14 +302,45 @@ static void NCR5380_reselect(struct Scsi_Host *instance); static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *); static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data); static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data); -static int NCR5380_poll_politely2(struct Scsi_Host *, int, int, int, int, int, int, int); +static int NCR5380_poll_politely2(struct NCR5380_hostdata *, + unsigned int, u8, u8, + unsigned int, u8, u8, unsigned long); -static inline int NCR5380_poll_politely(struct Scsi_Host *instance, - int reg, int bit, int val, int wait) +static inline int NCR5380_poll_politely(struct NCR5380_hostdata *hostdata, + unsigned int reg, u8 bit, u8 val, + unsigned long wait) { - return NCR5380_poll_politely2(instance, reg, bit, val, + if ((NCR5380_read(reg) & bit) == val) + return 0; + + return NCR5380_poll_politely2(hostdata, reg, bit, val, reg, bit, val, wait); } +static int NCR5380_dma_xfer_len(struct NCR5380_hostdata *, + struct scsi_cmnd *); +static int NCR5380_dma_send_setup(struct NCR5380_hostdata *, + unsigned char *, int); +static int NCR5380_dma_recv_setup(struct NCR5380_hostdata *, + unsigned char *, int); +static int NCR5380_dma_residual(struct NCR5380_hostdata *); + +static inline int NCR5380_dma_xfer_none(struct NCR5380_hostdata *hostdata, + struct scsi_cmnd *cmd) +{ + return 0; +} + +static inline int NCR5380_dma_setup_none(struct NCR5380_hostdata *hostdata, + unsigned char *data, int count) +{ + return 0; +} + +static inline int NCR5380_dma_residual_none(struct NCR5380_hostdata *hostdata) +{ + return 0; +} + #endif /* __KERNEL__ */ #endif /* NCR5380_H */ |