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Kernel: Add support for high bandwidth IO communication with VMWare

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Liav A 2020-02-05 02:54:52 +02:00 • committed by Andreas Kling
parent 0c20f98c1c
commit 6070fe581b
3 changed files with 28 additions and 0 deletions
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14
Kernel/IO.h
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@ -99,6 +99,20 @@ inline void vmware_out(VMWareCommand& command)
: "+a"(command.ax), "+b"(command.bx), "+c"(command.cx), "+d"(command.dx), "+S"(command.si), "+D"(command.di));
}
inline void vmware_highbandwidth_send(VMWareCommand& command) {
command.magic = VMWARE_MAGIC;
command.port = VMWARE_PORT_HIGHBANDWIDTH;
asm volatile("cld; rep; outsb" : "+a"(command.ax), "+b"(command.bx), "+c"(command.cx), "+d"(command.dx), "+S"(command.si), "+D"(command.di));
}
inline void vmware_highbandwidth_get(VMWareCommand& command) {
command.magic = VMWARE_MAGIC;
command.port = VMWARE_PORT_HIGHBANDWIDTH;
asm volatile("cld; rep; insb" : "+a"(command.ax), "+b"(command.bx), "+c"(command.cx), "+d"(command.dx), "+S"(command.si), "+D"(command.di));
}
inline void delay()
{
// ~3 microsecs