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carol: fix control board request struct

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This commit is contained in:
Hay1tsme
2023-03-30 03:55:40 -04:00
parent 301a0e0ce7
commit 8c97dc09c0
3 changed files with 95 additions and 44 deletions
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116
carolhook/controlbd.c
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@ -21,7 +21,9 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp);
static HRESULT controlbd_frame_decode(struct controlbd_req *dest, struct iobuf *iobuf);
static HRESULT controlbd_frame_dispatch(struct controlbd_req *dest);
static HRESULT controlbd_req_nop(uint8_t cmd);
static HRESULT controlbd_req_noop(uint8_t cmd);
static HRESULT controlbd_req_unk7c(uint8_t cmd);
static HRESULT controlbd_req_unkF0(uint8_t cmd);
static CRITICAL_SECTION controlbd_lock;
static struct uart controlbd_uart;
@ -76,7 +78,7 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp)
hr = carol_dll.controlbd_init();
if (FAILED(hr)) {
dprintf("Control Board: Backend DLL error: %x\n", (int) hr);
dprintf("Control Board: Backend DLL error: 0X%X\n", (int) hr);
return hr;
}
@ -96,14 +98,14 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp)
hr = controlbd_frame_decode(&req, &controlbd_uart.written);
if (FAILED(hr)) {
dprintf("Control Board: Deframe Error: %x\n", (int) hr);
dprintf("Control Board: Deframe Error: 0X%X\n", (int) hr);
return hr;
}
hr = controlbd_frame_dispatch(&req);
if (FAILED(hr)) {
dprintf("Control Board: Dispatch Error: %x\n", (int) hr);
dprintf("Control Board: Dispatch Error: 0X%X\n", (int) hr);
return hr;
}
@ -115,62 +117,104 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp)
static HRESULT controlbd_frame_dispatch(struct controlbd_req *req)
{
switch (req->cmd) {
case CONTROLBD_CMD_UNK_11:
return controlbd_req_nop(req->cmd);
case CONTROLBD_CMD_UNK_10:
return controlbd_req_noop(req->cmd);
case CONTROLBD_CMD_UNK_7C:
return controlbd_req_unk7c(req->cmd);
case CONTROLBD_CMD_UNK_F0:
return controlbd_req_unkF0(req->cmd);
case CONTROLBD_CMD_UNK_30:
return controlbd_req_noop(req->cmd);
default:
dprintf("Unhandled command %#02x\n", req->cmd);
return S_OK;
dprintf("Unhandled command 0x%02X\n", req->cmd);
return controlbd_req_noop(req->cmd);
}
}
static HRESULT controlbd_req_nop(uint8_t cmd)
static HRESULT controlbd_req_noop(uint8_t cmd)
{
dprintf("Control Board: No-op cmd %#02x\n", cmd);
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0xE0;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x01;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x11;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x03;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x01;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x10;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x01;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x27;
dprintf("Control Board: Noop cmd 0x%02X\n", cmd);
uint8_t resp[] = { 0xE0, 0x01, 0x11, 0x03, 0x01, 0x00, 0x01, 0x17 };
resp[5] = cmd;
resp[7] = 0x17 + cmd;
iobuf_write(&controlbd_uart.readable, resp, 8);
return S_OK;
}
/* Decodes the response into a struct that's easier to work with. */
static HRESULT controlbd_req_unk7c(uint8_t cmd)
{
dprintf("Control Board: Cmd 0x7C\n");
uint8_t resp[] = { 0xE0, 0x01, 0x11, 0x04, 0x01, 0x7C, 0x01, 0x07, 0x9B };
iobuf_write(&controlbd_uart.readable, resp, 9);
return S_OK;
}
static HRESULT controlbd_req_unkF0(uint8_t cmd)
{
dprintf("Control Board: Cmd 0xF0\n");
uint8_t resp[] = { 0xE0, 0x01, 0x11, 0x0A, 0x01, 0xF0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E };
iobuf_write(&controlbd_uart.readable, resp, 16);
return S_OK;
}
/* Decodes the response into a struct that's easier to work with. TODO: Further validation */
static HRESULT controlbd_frame_decode(struct controlbd_req *dest, struct iobuf *iobuf)
{
int initial_pos = iobuf->pos;
uint8_t check = 0;
int processed_pos = 0;
uint8_t check = 0;
bool escape = false;
dump_iobuf(iobuf);
dest->sync = iobuf->bytes[0];
iobuf->pos--;
dest->cmd = iobuf->bytes[1];
iobuf->pos--;
dest->dest = iobuf->bytes[1];
check += dest->dest;
dest->src = iobuf->bytes[2];
check += dest->src;
dest->data_len = iobuf->bytes[3];
check += dest->data_len;
dest->cmd = iobuf->bytes[4];
check += dest->cmd;
dest->checksum = iobuf->bytes[initial_pos - 1];
iobuf->pos--;
dest->data_length = initial_pos - 3; // sync, cmd, checksum
if (dest->data_length > 0) {
for (int i = 0; i < dest->data_length; i++) {
dest->data[i] = iobuf->bytes[i+2];
if (dest->data_len > 1) {
for (int i = 0; i < iobuf->pos - 6; i++) {
if (iobuf->bytes[i+6] == 0xD0) {
escape = true;
}
dest->data[i] = iobuf->bytes[i+6];
if (escape) {
dest->data[i]++;
escape = false;
}
check += dest->data[i];
}
}
iobuf->pos -= dest->data_length;
dest->checksum = iobuf->bytes[iobuf->pos - 1];
if (escape) {
dest->checksum++;
escape = false;
}
iobuf->pos = 0;
if (dest->sync != 0xe0) {
dprintf("Control Board: Sync error, expected 0xe0, got %x\n", dest->sync);
dprintf("Control Board: Sync error, expected 0xe0, got 0X%02X\n", dest->sync);
return E_FAIL;
}
if (dest->checksum != check) {
dprintf("Control Board: Checksum error, expected %x, got %x\n", check, dest->checksum);
if (dest->checksum != (check & 0xFF)) {
dprintf("Control Board: Checksum error, expected 0X%02X, got 0X%02X\n", dest->checksum, check);
return E_FAIL;
}