261 lines
6.2 KiB
C
261 lines
6.2 KiB
C
/* gc_n64_usb : Gamecube or N64 controller to USB firmware
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Copyright (C) 2007-2016 Raphael Assenat <raph@raphnet.net>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "requests.h"
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#include "config.h"
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#include "hiddata.h"
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#include "usbpad.h"
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#include "bootloader.h"
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#include "gcn64_protocol.h"
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#include "version.h"
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#include "main.h"
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// dataHidReport is 63 bytes. Endpoint is 64 bytes.
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#define CMDBUF_SIZE 64
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#define STATE_IDLE 0
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#define STATE_NEW_COMMAND 1 // New command in buffer
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#define STATE_COMMAND_DONE 2 // Result in buffer
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//#define DEBUG
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extern char g_polling_suspended;
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static volatile uint8_t state = STATE_IDLE;
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static unsigned char cmdbuf[CMDBUF_SIZE];
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static volatile unsigned char cmdbuf_len = 0;
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/*** Get/Set report called from interrupt context! */
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uint16_t hiddata_get_report(void *ctx, struct usb_request *rq, const uint8_t **dat)
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{
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// printf("Get data\n");
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if (state == STATE_COMMAND_DONE) {
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*dat = cmdbuf;
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state = STATE_IDLE;
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#ifdef DEBUG
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printf_P(PSTR("hiddata idle, sent %d bytes\r\n"), cmdbuf_len);
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#endif
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return cmdbuf_len;
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}
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return 0;
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}
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/*** Get/Set report called from interrupt context! */
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uint8_t hiddata_set_report(void *ctx, const struct usb_request *rq, const uint8_t *dat, uint16_t len)
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{
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#ifdef DEBUG
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int i;
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printf_P(PSTR("Set data %d\n"), len);
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for (i=0; i<len; i++) {
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printf_P(PSTR("%02x "), dat[i]);
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}
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printf_P(PSTR("\r\n"));
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#endif
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state = STATE_NEW_COMMAND;
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memcpy(cmdbuf, dat, len);
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cmdbuf_len = len;
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return 0;
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}
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static uint8_t processBlockIO(void)
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{
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uint8_t requestCopy[CMDBUF_SIZE];
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int i, rx_offset = 0, rx;
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uint8_t chn, n_tx, n_rx;
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memcpy(requestCopy, cmdbuf, CMDBUF_SIZE);
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memset(cmdbuf + 1, 0xff, CMDBUF_SIZE-1);
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for (rx_offset = 1, i=1; i<CMDBUF_SIZE; ) {
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if (i + 3 >= CMDBUF_SIZE)
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break;
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chn = requestCopy[i];
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if (chn == 0xff)
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break;
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i++;
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n_tx = requestCopy[i];
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i++;
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n_rx = requestCopy[i];
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i++;
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if (n_tx == 0)
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continue;
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if (rx_offset + 1 + n_rx >= CMDBUF_SIZE) {
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break;
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}
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rx = gcn64_transaction(chn, requestCopy + i, n_tx, cmdbuf + rx_offset + 1, n_rx);
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cmdbuf[rx_offset] = n_rx;
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if (rx <= 0) {
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// timeout
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cmdbuf[rx_offset] |= 0x80;
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} else if (rx < n_rx) {
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// less than expected
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cmdbuf[rx_offset] |= 0x40;
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}
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rx_offset += n_rx + 1;
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i += n_tx;
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}
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return 63;
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}
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static void hiddata_processCommandBuffer(struct hiddata_ops *ops)
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{
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unsigned char channel;
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#ifdef DEBUG
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int i;
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#endif
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if (cmdbuf_len < 1) {
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state = STATE_IDLE;
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return;
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}
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// printf("Process cmd 0x%02x\r\n", cmdbuf[0]);
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switch(cmdbuf[0])
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{
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case RQ_GCN64_ECHO:
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// Cmd : RQ, data[]
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// Answer: RQ, data[]
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break;
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case RQ_GCN64_JUMP_TO_BOOTLOADER:
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enterBootLoader();
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break;
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case RQ_RNT_RESET_FIRMWARE:
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resetFirmware();
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break;
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case RQ_GCN64_RAW_SI_COMMAND:
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// TODO : Range checking
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// cmdbuf[] : RQ, CHN, LEN, data[]
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channel = cmdbuf[1];
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if (channel >= NUM_CHANNELS)
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break;
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cmdbuf_len = gcn64_transaction(channel, cmdbuf+3, cmdbuf[2], cmdbuf + 3, CMDBUF_SIZE-3);
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cmdbuf[2] = cmdbuf_len;
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cmdbuf_len += 3; // Answer: RQ, CHN, LEN, data[]
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break;
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case RQ_GCN64_GET_CONFIG_PARAM:
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// Cmd : RQ, PARAM
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// Answer: RQ, PARAM, data[]
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cmdbuf_len = config_getParam(cmdbuf[1], cmdbuf + 2, CMDBUF_SIZE-2);
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cmdbuf_len += 2; // Datalen + RQ + PARAM
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break;
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case RQ_GCN64_SET_CONFIG_PARAM:
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// Cmd: RQ, PARAM, data[]
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config_setParam(cmdbuf[1], cmdbuf+2);
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// Answer: RQ, PARAM
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cmdbuf_len = 2;
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break;
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case RQ_GCN64_SUSPEND_POLLING:
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// CMD: RQ, PARAM
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if (ops && ops->suspendPolling) {
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ops->suspendPolling(cmdbuf[1]);
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}
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break;
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case RQ_GCN64_GET_VERSION:
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// CMD: RQ
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// Answer: RQ, version string (zero-terminated)
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strcpy((char*)(cmdbuf + 1), g_version);
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cmdbuf_len = 1 + strlen(g_version) + 1;
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break;
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case RQ_GCN64_GET_SIGNATURE:
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strcpy_P((char*)(cmdbuf + 1), g_signature);
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cmdbuf_len = 1 + strlen_P(g_signature) + 1;
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break;
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case RQ_GCN64_GET_CONTROLLER_TYPE:
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// CMD : RQ, CHN
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// Answer: RQ, CHN, TYPE
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channel = cmdbuf[1];
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if (channel >= NUM_CHANNELS)
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break;
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cmdbuf[2] = current_pad_type[channel];
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cmdbuf_len = 3;
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break;
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case RQ_GCN64_SET_VIBRATION:
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// CMD : RQ, CHN, Vibrate
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// Answer: RQ, CHN, Vibrate
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if (ops && ops->forceVibration) {
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ops->forceVibration(cmdbuf[1], cmdbuf[2]);
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}
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cmdbuf_len = 3;
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break;
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case RQ_GCN64_BLOCK_IO:
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cmdbuf_len = processBlockIO();
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break;
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case RQ_RNT_GET_SUPPORTED_REQUESTS:
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cmdbuf[1] = RQ_GCN64_JUMP_TO_BOOTLOADER;
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cmdbuf[2] = RQ_GCN64_RAW_SI_COMMAND;
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cmdbuf[3] = RQ_GCN64_GET_CONFIG_PARAM;
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cmdbuf[4] = RQ_GCN64_SET_CONFIG_PARAM;
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cmdbuf[5] = RQ_GCN64_SUSPEND_POLLING;
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cmdbuf[6] = RQ_GCN64_GET_VERSION;
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cmdbuf[7] = RQ_GCN64_GET_SIGNATURE;
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cmdbuf[8] = RQ_GCN64_GET_CONTROLLER_TYPE;
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cmdbuf[9] = RQ_GCN64_SET_VIBRATION;
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cmdbuf[10] = RQ_GCN64_BLOCK_IO;
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cmdbuf[11] = RQ_RNT_GET_SUPPORTED_CFG_PARAMS;
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cmdbuf[12] = RQ_RNT_GET_SUPPORTED_MODES;
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cmdbuf[13] = RQ_RNT_GET_SUPPORTED_REQUESTS;
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cmdbuf_len = 14;
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break;
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case RQ_RNT_GET_SUPPORTED_CFG_PARAMS:
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cmdbuf_len = 1 + config_getSupportedParams(cmdbuf + 1);
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break;
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case RQ_RNT_GET_SUPPORTED_MODES:
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cmdbuf_len = 1;
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if (ops && ops->getSupportedModes) {
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cmdbuf_len += ops->getSupportedModes(cmdbuf + 1);
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}
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break;
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}
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#ifdef DEBUG
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printf("Pending data %d\n", cmdbuf_len);
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for (i=0; i<cmdbuf_len; i++) {
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printf("%02x ", cmdbuf[i]);
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}
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printf("\r\n");
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#endif
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state = STATE_COMMAND_DONE;
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}
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void hiddata_doTask(struct hiddata_ops *ops)
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{
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switch (state)
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{
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default:
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state = STATE_IDLE;
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case STATE_IDLE:
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break;
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case STATE_NEW_COMMAND:
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hiddata_processCommandBuffer(ops);
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break;
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case STATE_COMMAND_DONE:
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break;
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}
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}
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