ioWrite16_x86(9DKI)

NAME | SYNOPSIS | API RESTRICTIONS | FEATURES | EXTENDED DESCRIPTION | ATTRIBUTES | SEE ALSO

NAME

ioLoad8_x86, ioStore8_x86, ioRead8_x86, ioWrite8_x86, ioLoad16_x86, ioStore16_x86, ioRead16_x86, ioWrite16_x86, ioLoad32_x86, ioStore32_x86, ioRead32_x86, ioWrite32_x86- Intel x86 specific I/O services

SYNOPSIS

 #include <dki/dki.h>

uint8_f ioLoad8(uint32_f base, uint32_f offset);
void ioStore8(uint32_f base, uint32_f offset, uint8_f value);
void ioRead8(uint32_f base, uint32_f offset, uint8_f * addr, uint32_f count);
void ioWrite8(uint32_f base, uint32_f offset, uint8_f * addr, uint32_f count);
uint16_f ioLoad16(uint32_f base, uint32_f offset);
void ioStore16(uint32_f base, uint32_f offset, uint16_f value);
void ioRead16(uint32_f base, uint32_f offset, uint16_f * addr, uint32_f count);
void ioWrite16(uint32_f base, uint32_f offset, uint16_f * addr, uint32_f count);
uint32_f ioLoad32(uint32_f base, uint32_f offset);
void ioStore32(uint32_f base, uint32_f offset, uint32_f value);
void ioRead32(uint32_f base, uint32_f offset, uint32_f * addr, uint32_f count);
void ioWrite32(uint32_f base, uint32_f offset, uint32_f * addr, uint32_f count);

API RESTRICTIONS

The function or functions documented here may not be used safely in all application contexts with all APIs provided in the ChorusOS 5.0 product.

See API(5FEA) for details.

FEATURES

DKI

EXTENDED DESCRIPTION

The DKI provides specific I/O routines that can be used by a host bus driver to implement bus I/O operations.

Specific I/O services are defined below as sets of routines, where the xx suffix indicates the bit length of the data to which the service applies. This suffix may take one of the following values:

• 8 for 8-bit data

• 16 for 16-bit data

• 32 for 32-bit data

ioLoadxx()

The ioLoadxx() loads data from a given I/O address and returns the read value. The read location is composed of a base address and an offset from this base. The base argument specifies the base address. The offset argument specifies the offset from the base address.

ioStorexx()

The ioStorexx() stores a specified value at a given I/O address. The I/O address written is composed of a base address and an offset from this base. The base argument specifies the base address. The offset argument specifies the offset from the base address. The value argument specifies the value to store (write).

ioReadxx()

The ioReadxx() reads data from a given I/O address count times and stores values at the memory location specified by the addr argument.

The read location is composed of a base address and an offset from this base. The base argument specifies the base address. The offset argument specifies the offset from the base address. The addr argument specifies the location where the read values will be stored. The count argument specifies the desired number of reads.

ioWritexx()

The ioWritexx() reads count data from the memory location at addr and writes it at the I/O address specified by the base and offset arguments.

The read location is specified by the addr argument. The I/O location written is composed of a base address and an offset from this base. The base argument specifies the base address. The offset argument specifies the offset from the base address. The count argument specifies the desired number of writes to perform.

Specific I/O Allowed Calling Contexts

The table below specifies the contexts in which a caller is allowed to invoke each service:

Services	Base level	DKI thread	Interrupt	Blocking
ioLoadxx()	+	+	+	-
ioStorexx()	+	+	+	-
ioReadxx()	+	+	+	-
ioWritexx()	+	+	+	-

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving

SEE ALSO

svDkiThreadCall(9DKI)

NAME | SYNOPSIS | API RESTRICTIONS | FEATURES | EXTENDED DESCRIPTION | ATTRIBUTES | SEE ALSO