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[XMA] Reorganize ReadRegister/WriteRegister a bit in XmaDecoder.

This commit is contained in:
gibbed 2019-09-05 23:00:06 -05:00 committed by Rick Gibbed
parent e99916b352
commit ce955e5aaa
1 changed files with 44 additions and 41 deletions
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85
src/xenia/apu/xma_decoder.cc
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@ -246,29 +246,34 @@ bool XmaDecoder::BlockOnContext(uint32_t guest_ptr, bool poll) {
uint32_t XmaDecoder::ReadRegister(uint32_t addr) {
uint32_t r = (addr & 0xFFFF) / 4;
switch (r) {
default: {
if (!register_file_.GetRegisterInfo(r)) {
XELOGE("XMA: Read from unknown register ({:04X})", r);
}
}
#pragma warning(suppress : 4065)
}
assert_true(r < XmaRegisterFile::kRegisterCount);
// 0606h (1818h) is rotating context processing # set to hardware ID of
// context being processed.
// If bit 200h is set, the locking code will possibly collide on hardware IDs
// and error out, so we should never set it (I think?).
if (r == XE_XMA_REG_CURRENT_CONTEXT_INDEX) {
// To prevent games from seeing a stuck XMA context, return a rotating
// number
uint32_t next_context_index =
register_file_[XE_XMA_REG_NEXT_CONTEXT_INDEX].u32;
register_file_[XE_XMA_REG_CURRENT_CONTEXT_INDEX].u32 = next_context_index;
register_file_[XE_XMA_REG_NEXT_CONTEXT_INDEX].u32 =
(next_context_index + 1) % kContextCount;
switch (r) {
case XE_XMA_REG_CURRENT_CONTEXT_INDEX: {
// 0606h (1818h) is rotating context processing # set to hardware ID of
// context being processed.
// If bit 200h is set, the locking code will possibly collide on hardware
// IDs and error out, so we should never set it (I think?).
uint32_t& current_context_index =
register_file_[XE_XMA_REG_CURRENT_CONTEXT_INDEX].u32;
uint32_t& next_context_index =
register_file_[XE_XMA_REG_NEXT_CONTEXT_INDEX].u32;
// To prevent games from seeing a stuck XMA context, return a rotating
// number.
current_context_index = next_context_index;
next_context_index = (next_context_index + 1) % kContextCount;
break;
}
default: {
const auto register_info = register_file_.GetRegisterInfo(r);
if (register_info) {
XELOGE("XMA: Read from unhandled register ({:04X}, {})", r,
register_info->name);
} else {
XELOGE("XMA: Read from unknown register ({:04X})", r);
}
break;
}
}
return xe::byte_swap(register_file_.values[r].u32);
@ -280,22 +285,6 @@ void XmaDecoder::WriteRegister(uint32_t addr, uint32_t value) {
uint32_t r = (addr & 0xFFFF) / 4;
value = xe::byte_swap(value);
if ((r >= XE_XMA_REG_CONTEXT_KICK_0 && r <= XE_XMA_REG_CONTEXT_KICK_9) ||
(r >= XE_XMA_REG_CONTEXT_LOCK_0 && r <= XE_XMA_REG_CONTEXT_LOCK_9) ||
(r >= XE_XMA_REG_CONTEXT_CLEAR_0 && r <= XE_XMA_REG_CONTEXT_CLEAR_9)) {
} else {
switch (r) {
default: {
XELOGE("XMA: Write to unhandled register ({:04X}): {:08X}", r, value);
break;
}
#pragma warning(suppress : 4065)
}
}
// 0601h (1804h) is written to with 0x02000000 and 0x03000000 around a lock
// operation
assert_true(r < XmaRegisterFile::kRegisterCount);
register_file_.values[r].u32 = value;
@ -310,11 +299,10 @@ void XmaDecoder::WriteRegister(uint32_t addr, uint32_t value) {
for (int i = 0; value && i < 32; ++i, value >>= 1) {
if (value & 1) {
uint32_t context_id = base_context_id + i;
XmaContext& context = contexts_[context_id];
auto& context = contexts_[context_id];
context.Enable();
}
}
// Signal the decoder thread to start processing.
work_event_->Set();
} else if (r >= XE_XMA_REG_CONTEXT_LOCK_0 && r <= XE_XMA_REG_CONTEXT_LOCK_9) {
@ -325,11 +313,10 @@ void XmaDecoder::WriteRegister(uint32_t addr, uint32_t value) {
for (int i = 0; value && i < 32; ++i, value >>= 1) {
if (value & 1) {
uint32_t context_id = base_context_id + i;
XmaContext& context = contexts_[context_id];
auto& context = contexts_[context_id];
context.Disable();
}
}
// Signal the decoder thread to start processing.
work_event_->Set();
} else if (r >= XE_XMA_REG_CONTEXT_CLEAR_0 &&
@ -344,6 +331,22 @@ void XmaDecoder::WriteRegister(uint32_t addr, uint32_t value) {
context.Clear();
}
}
} else {
// 0601h (1804h) is written to with 0x02000000 and 0x03000000 around a lock
// operation
switch (r) {
default: {
const auto register_info = register_file_.GetRegisterInfo(r);
if (register_info) {
XELOGE("XMA: Write to unhandled register ({:04X}, {}): {:08X}", r,
register_info->name, value);
} else {
XELOGE("XMA: Write to unknown register ({:04X}): {:08X}", r, value);
}
break;
}
#pragma warning(suppress : 4065)
}
}
}