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Diffstat (limited to 'drivers/scsi/NCR5380.h')
-rw-r--r--drivers/scsi/NCR5380.h87
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 */