sunos man page for ddi_get8

ddi_get8(9F)						   Kernel Functions for Drivers 					      ddi_get8(9F)

NAME
       ddi_get8,  ddi_get16, ddi_get32, ddi_get64, ddi_getb, ddi_getw, ddi_getl, ddi_getll - read data from the mapped memory address, device reg-
       ister or allocated DMA memory address

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

       uint8_t ddi_get8(ddi_acc_handle_t handle, uint8_t *dev_addr);

       uint16_t ddi_get16(ddi_acc_handle_t handle, uint16_t *dev_addr);

       uint32_t ddi_get32(ddi_acc_handle_t handle, uint32_t *dev_addr);

       uint64_t ddi_get64(ddi_acc_handle_t handle, uint64_t *dev_addr);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

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

       dev_addr        Base device address.

DESCRIPTION
       The ddi_get8(), ddi_get16(), ddi_get32(), and ddi_get64() functions read 8 bits, 16 bits, 32 bits and 64 bits of data,  respectively,  from
       the device address, dev_addr.

       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.

       For  certain bus types, you can call these DDI functions from a	high-interrupt context.  These types include ISA and SBus buses.  See sys-
       bus(4), isa(4), and sbus(4) for details. For the PCI bus, you can, under certain conditions, call these DDI functions from a high-interrupt
       context. See pci(4).

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_put8(9F), ddi_regs_map_free(9F), ddi_regs_map_setup(9F), ddi_rep_get8(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_getb	     ddi_get8				      |
       |ddi_getw	     ddi_get16				      |
       |ddi_getl	     ddi_get32				      |
       |ddi_getll	     ddi_get64				      |
       +--------------------------------------------------------------+

SunOS 5.10							    18 Nov 2004 						      ddi_get8(9F)