sunos man page for ddi_rep_getb

ddi_rep_get8(9F)					   Kernel Functions for Drivers 					  ddi_rep_get8(9F)

NAME
       ddi_rep_get8,  ddi_rep_get16,  ddi_rep_get32,  ddi_rep_get64,  ddi_rep_getw, ddi_rep_getl, ddi_rep_getll, ddi_rep_getb - read data from the
       mapped memory address, device register or allocated DMA memory address

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       void ddi_rep_get8(ddi_acc_handle_t handle, uint8_t *host_addr, uint8_t *dev_addr, size_t repcount, uint_t flags);

       void ddi_rep_get16(ddi_acc_handle_t handle, uint16_t *host_addr, uint16_t *dev_addr, size_t repcount, uint_t flags);

       void ddi_rep_get32(ddi_acc_handle_t handle, uint32_t *host_addr, uint32_t *dev_addr, size_t repcount, uint_t flags);

       void ddi_rep_get64(ddi_acc_handle_t handle, uint64_t *host_addr, uint64_t *dev_addr, size_t repcount, uint_t flags);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       handle	       The data access handle returned from setup calls, such as ddi_regs_map_setup(9F).

       host_addr       Base host address.

       dev_addr        Base device address.

       repcount        Number of data accesses to perform.

       flags	       Device address flags:

		       DDI_DEV_AUTOINCR

			   Automatically increment the device address,	dev_addr, during data accesses.

		       DDI_DEV_NO_AUTOINCR

			   Do not advance the  device address,	dev_addr, during data accesses.

DESCRIPTION
       These routines generate multiple reads from the mapped memory or device	register.  repcount  data  is  copied  from  the  device  address,
       dev_addr,  to the host address,	host_addr. For each input datum, the ddi_rep_get8(), ddi_rep_get16(), ddi_rep_get32(), and ddi_rep_get64()
       functions read 8 bits, 16 bits, 32 bits, and 64 bits of data, respectively, from the device address, dev_addr. dev_addr and host_addr  must
       be aligned to the datum boundary described by the function.

       Each  individual  datum will automatically be translated to maintain a consistent view between the host and the device based on the encoded
       information in the data access handle. The translation may involve byte-swapping if the host and the device have incompatible endian  char-
       acteristics.

       When the  flags argument is set to  DDI_DEV_AUTOINCR, these functions  treat the device address,  dev_addr, as a memory buffer location	on
       the device and increment its address on the next input datum.  However, when the  flags	argument  is  to   DDI_DEV_NO_AUTOINCR,  the  same
       device address will be used for every datum access. For example, this flag may be useful when reading from a data register.

RETURN VALUES
       These functions	return the value read from the mapped address.

CONTEXT
       These functions can be called from user, kernel, or interrupt context.

SEE ALSO
       ddi_get8(9F), ddi_put8(9F), ddi_regs_map_free(9F), ddi_regs_map_setup(9F), ddi_rep_put8(9F)

NOTES
       The functions described in this manual page previously used symbolic  names which specified their data access size; the function names have
       been changed so they now specify a fixed-width data size.
	See the  following table for the new name equivalents:

       +-----------------------------+-----------------------------+
       |       Previous Name	     |		New Name	   |
       |ddi_rep_getb		     |ddi_rep_get8		   |
       |ddi_rep_getw		     |ddi_rep_get16		   |
       |ddi_rep_getl		     |ddi_rep_get32		   |
       |ddi_rep_getll		     |ddi_rep_get64		   |
       +-----------------------------+-----------------------------+

SunOS 5.10							    10 Aug 1996 						  ddi_rep_get8(9F)