// Reads a word from the MI MMIO register space.
int read_mi_regs(void *opaque, uint32_t address, uint32_t *word) {
struct vr4300 *vr4300 = (struct vr4300 *) opaque;
uint32_t offset = address - MI_REGS_BASE_ADDRESS;
enum mi_register reg = (offset >> 2);
*word = vr4300->mi_regs[reg];
debug_mmio_read(mi, mi_register_mnemonics[reg], *word);
return 0;
}
// Reads a word from the PI MMIO register space.
int read_pi_regs(void *opaque, uint32_t address, uint32_t *word) {
struct pi_controller *pi = (struct pi_controller *) opaque;
unsigned offset = address - PI_REGS_BASE_ADDRESS;
enum pi_register reg = (offset >> 2);
*word = pi->regs[reg];
debug_mmio_read(pi, pi_register_mnemonics[reg], *word);
return 0;
}
// Reads a word from the AI MMIO register space.
int read_ai_regs(void *opaque, uint32_t address, uint32_t *word) {
struct ai_controller *ai = (struct ai_controller *) opaque;
unsigned offset = address - AI_REGS_BASE_ADDRESS;
enum ai_register reg = (offset >> 2);
*word = ai->regs[reg];
debug_mmio_read(ai, ai_register_mnemonics[reg], *word);
if (reg == AI_LEN_REG) {
*word = 0;
if (ai->regs[AI_STATUS_REG] & 0x80000001)
*word = ai->regs[AI_LEN_REG];
else if (ai->regs[AI_STATUS_REG] & 0x40000000) {
// TODO
}
}
return 0;
}
