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| Kernel Functions for Drivers | ddi_mem_get8(9F) |
| | ddi_mem_get8, ddi_mem_get16, ddi_mem_get32, ddi_mem_get64, ddi_mem_getw, ddi_mem_getl, ddi_mem_getll, ddi_mem_getb - read data from mapped
device in the memory space or allocated DMA memory |
SYNOPSIS
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#include <sys/ddi.h>
#include <sys/sunddi.h>
uint8_t ddi_mem_get8(ddi_acc_handle_t handle, uint8_t *dev_addr); |
| | uint16_t ddi_mem_get16(ddi_acc_handle_t handle, uint16_t * dev_addr); |
| | uint32_t ddi_mem_get32(ddi_acc_handle_t handle, uint32_t *dev_addr); |
| | uint64_t ddi_mem_get64(ddi_acc_handle_t handle, uint64_t *dev_addr); |
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Solaris DDI specific (Solaris DDI).
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handle
- The data access handle returned
from setup calls, such as ddi_regs_map_setup(9F).
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dev_addr
- Base device address.
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These routines generate a read of various sizes from memory space
or allocated DMA memory. The ddi_mem_get8(), ddi_mem_get16(), ddi_mem_get32(), and ddi_mem_get64() functions
read 8 bits, 16 bits, 32 bits and 64 bits of data, respectively, from the
device address, dev_addr, in memory space.
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 characteristics.
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These functions can be called from user, kernel, or interrupt context.
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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_mem_getb | ddi_mem_get8 |
| ddi_mem_getw | ddi_mem_get16 |
| ddi_mem_getl | ddi_mem_get32 |
| ddi_mem_getll | ddi_mem_get64 |
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