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[Zion][Yellowstone] First pass at adding PCI ioport access.

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This commit is contained in:
Drew Galbraith 2025-05-07 01:44:09 -07:00
parent f2c2cff98a
commit b677633248
16 changed files with 337 additions and 199 deletions
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10
zion/common/port.h
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@ -11,3 +11,13 @@ static inline uint8_t inb(uint16_t port) {
static inline void outb(uint16_t port, uint8_t value) {
asm volatile("outb %0, %1" ::"a"(value), "Nd"(port));
}
static inline uint32_t inl(uint16_t port) {
uint32_t result;
asm volatile("inl %1, %0" : "=a"(result) : "Nd"(port));
return result;
}
static inline void outl(uint16_t port, uint32_t value) {
asm volatile("outl %0, %1" ::"a"(value), "Nd"(port));
}