* Copyright 2021, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#include <Htif.h>
uint64
HtifCmd(uint32 device, uint8 cmd, uint32 arg)
{
if (gHtifRegs == 0)
return 0;
uint64 htifTohost = ((uint64)device << 56)
+ ((uint64)cmd << 48) + arg;
gHtifRegs->toHostLo = htifTohost % ((uint64)1 << 32);
gHtifRegs->toHostHi = htifTohost / ((uint64)1 << 32);
return (uint64)gHtifRegs->fromHostLo
+ ((uint64)gHtifRegs->fromHostHi << 32);
}
void
HtifShutdown()
{
HtifCmd(0, 0, 1);
}
void
HtifOutChar(char ch)
{
HtifCmd(1, 1, ch);
}
void
HtifOutString(const char *str)
{
for (; *str != '\0'; str++)
HtifOutChar(*str);
}
void
HtifOutString(const char *str, size_t len)
{
for (; len > 0; str++, len--)
HtifOutChar(*str);
}
