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carol: fix control board request struct

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
View File

@ -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_decode(struct controlbd_req *dest, struct iobuf *iobuf);
static HRESULT controlbd_frame_dispatch(struct controlbd_req *dest); 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 CRITICAL_SECTION controlbd_lock;
static struct uart controlbd_uart; static struct uart controlbd_uart;
@ -76,7 +78,7 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp)
hr = carol_dll.controlbd_init(); hr = carol_dll.controlbd_init();
if (FAILED(hr)) { 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; return hr;
} }
@ -96,14 +98,14 @@ static HRESULT controlbd_handle_irp_locked(struct irp *irp)
hr = controlbd_frame_decode(&req, &controlbd_uart.written); hr = controlbd_frame_decode(&req, &controlbd_uart.written);
if (FAILED(hr)) { if (FAILED(hr)) {
dprintf("Control Board: Deframe Error: %x\n", (int) hr); dprintf("Control Board: Deframe Error: 0X%X\n", (int) hr);
return hr; return hr;
} }
hr = controlbd_frame_dispatch(&req); hr = controlbd_frame_dispatch(&req);
if (FAILED(hr)) { if (FAILED(hr)) {
dprintf("Control Board: Dispatch Error: %x\n", (int) hr); dprintf("Control Board: Dispatch Error: 0X%X\n", (int) hr);
return 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) static HRESULT controlbd_frame_dispatch(struct controlbd_req *req)
{ {
switch (req->cmd) { switch (req->cmd) {
case CONTROLBD_CMD_UNK_11: case CONTROLBD_CMD_UNK_10:
return controlbd_req_nop(req->cmd); 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: default:
dprintf("Unhandled command %#02x\n", req->cmd); dprintf("Unhandled command 0x%02X\n", req->cmd);
return controlbd_req_noop(req->cmd);
return S_OK;
} }
} }
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); dprintf("Control Board: Noop cmd 0x%02X\n", cmd);
uint8_t resp[] = { 0xE0, 0x01, 0x11, 0x03, 0x01, 0x00, 0x01, 0x17 };
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0xE0; resp[5] = cmd;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x01; resp[7] = 0x17 + cmd;
controlbd_uart.readable.bytes[controlbd_uart.readable.pos++] = 0x11; iobuf_write(&controlbd_uart.readable, resp, 8);
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;
return S_OK; 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) static HRESULT controlbd_frame_decode(struct controlbd_req *dest, struct iobuf *iobuf)
{ {
int initial_pos = iobuf->pos; 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]; dest->sync = iobuf->bytes[0];
iobuf->pos--;
dest->cmd = iobuf->bytes[1]; dest->dest = iobuf->bytes[1];
iobuf->pos--; 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; check += dest->cmd;
dest->checksum = iobuf->bytes[initial_pos - 1]; if (dest->data_len > 1) {
iobuf->pos--; for (int i = 0; i < iobuf->pos - 6; i++) {
if (iobuf->bytes[i+6] == 0xD0) {
dest->data_length = initial_pos - 3; // sync, cmd, checksum escape = true;
if (dest->data_length > 0) { }
for (int i = 0; i < dest->data_length; i++) {
dest->data[i] = iobuf->bytes[i+2]; dest->data[i] = iobuf->bytes[i+6];
if (escape) {
dest->data[i]++;
escape = false;
}
check += dest->data[i]; 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) { 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; 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; return E_FAIL;
} }

19
carolhook/controlbd.h
View File

@ -7,15 +7,22 @@
struct controlbd_config { struct controlbd_config {
bool enable; bool enable;
}; };
enum controlbd_cmd { enum controlbd_cmd {
CONTROLBD_CMD_UNK_11 = 0x11 CONTROLBD_CMD_UNK_10 = 0x10,
CONTROLBD_CMD_UNK_7C = 0x7C,
CONTROLBD_CMD_UNK_30 = 0x30,
CONTROLBD_CMD_UNK_F0 = 0xF0,
}; };
struct controlbd_req { struct controlbd_req {
uint8_t sync; // First byte is the sync uint8_t sync; // Sync byte, always 0xE0
uint8_t cmd; // Command byte uint8_t dest; // command destination id?
uint8_t data[256]; // Request body goes here uint8_t src; // command source id?
uint8_t checksum; // Final byte is all bytes added, except the sync uint8_t data_len; // length of the proceeding data bytes
uint8_t data_length; // Size of the data including command byte uint8_t cmd; // might be the command byte?
uint8_t data[255]; // rest of the data, len = data_len - 1
uint8_t checksum; // final byte is all bytes (excluding sync) added
}; };
HRESULT controlbd_hook_init(const struct controlbd_config *cfg); HRESULT controlbd_hook_init(const struct controlbd_config *cfg);

4
carolhook/touch.c
View File

@ -71,7 +71,7 @@ static HRESULT touch_handle_irp_locked(struct irp *irp)
hr = carol_dll.touch_init(); hr = carol_dll.touch_init();
if (FAILED(hr)) { if (FAILED(hr)) {
dprintf("Touchscreen: Backend DLL error: %x\n", (int) hr); dprintf("Touchscreen: Backend DLL error: %X\n", (int) hr);
return hr; return hr;
} }
@ -91,7 +91,7 @@ static HRESULT touch_handle_irp_locked(struct irp *irp)
hr = touch_frame_decode(&req, &touch_uart.written); hr = touch_frame_decode(&req, &touch_uart.written);
if (FAILED(hr)) { if (FAILED(hr)) {
dprintf("Touchscreen: Deframe Error: %x\n", (int) hr); dprintf("Touchscreen: Deframe Error: %X\n", (int) hr);
return hr; return hr;
} }