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      1 /*
      2  *
      3  *  BlueZ - Bluetooth protocol stack for Linux
      4  *
      5  *  Copyright (C) 2005-2009  Marcel Holtmann <marcel (at) holtmann.org>
      6  *
      7  *
      8  *  This program is free software; you can redistribute it and/or modify
      9  *  it under the terms of the GNU General Public License as published by
     10  *  the Free Software Foundation; either version 2 of the License, or
     11  *  (at your option) any later version.
     12  *
     13  *  This program is distributed in the hope that it will be useful,
     14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16  *  GNU General Public License for more details.
     17  *
     18  *  You should have received a copy of the GNU General Public License
     19  *  along with this program; if not, write to the Free Software
     20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     21  *
     22  */
     23 
     24 #ifdef HAVE_CONFIG_H
     25 #include <config.h>
     26 #endif
     27 
     28 #include <stdio.h>
     29 #include <errno.h>
     30 #include <fcntl.h>
     31 #include <unistd.h>
     32 #include <stdlib.h>
     33 #include <string.h>
     34 #include <signal.h>
     35 #include <syslog.h>
     36 #include <termios.h>
     37 #include <time.h>
     38 #include <sys/time.h>
     39 #include <sys/poll.h>
     40 #include <sys/param.h>
     41 #include <sys/ioctl.h>
     42 #include <sys/socket.h>
     43 #include <sys/uio.h>
     44 
     45 #include <bluetooth/bluetooth.h>
     46 #include <bluetooth/hci.h>
     47 #include <bluetooth/hci_lib.h>
     48 
     49 #include "hciattach.h"
     50 
     51 #define FAILIF(x, args...) do {   \
     52 	if (x) {					  \
     53 		fprintf(stderr, ##args);  \
     54 		return -1;				  \
     55 	}							  \
     56 } while(0)
     57 
     58 typedef struct {
     59 	uint8_t uart_prefix;
     60 	hci_event_hdr hci_hdr;
     61 	evt_cmd_complete cmd_complete;
     62 	uint8_t status;
     63 	uint8_t data[16];
     64 } __attribute__((packed)) command_complete_t;
     65 
     66 static int read_command_complete(int fd, unsigned short opcode, unsigned char len) {
     67 	command_complete_t resp;
     68 	/* Read reply. */
     69 	FAILIF(read_hci_event(fd, (unsigned char *)&resp, sizeof(resp)) < 0,
     70 		   "Failed to read response");
     71 
     72 	/* Parse speed-change reply */
     73 	FAILIF(resp.uart_prefix != HCI_EVENT_PKT,
     74 		   "Error in response: not an event packet, but 0x%02x!\n",
     75 		   resp.uart_prefix);
     76 
     77 	FAILIF(resp.hci_hdr.evt != EVT_CMD_COMPLETE, /* event must be event-complete */
     78 		   "Error in response: not a cmd-complete event, "
     79 		   "but 0x%02x!\n", resp.hci_hdr.evt);
     80 
     81 	FAILIF(resp.hci_hdr.plen < 4, /* plen >= 4 for EVT_CMD_COMPLETE */
     82 		   "Error in response: plen is not >= 4, but 0x%02x!\n",
     83 		   resp.hci_hdr.plen);
     84 
     85 	/* cmd-complete event: opcode */
     86 	FAILIF(resp.cmd_complete.opcode != (uint16_t)opcode,
     87 		   "Error in response: opcode is 0x%04x, not 0x%04x!",
     88 		   resp.cmd_complete.opcode, opcode);
     89 
     90 	return resp.status == 0 ? 0 : -1;
     91 }
     92 
     93 typedef struct {
     94 	uint8_t uart_prefix;
     95 	hci_command_hdr hci_hdr;
     96 	uint32_t speed;
     97 } __attribute__((packed)) texas_speed_change_cmd_t;
     98 
     99 static int texas_change_speed(int fd, struct termios *ti, uint32_t speed)
    100 {
    101         /* Send a speed-change request */
    102         texas_speed_change_cmd_t cmd;
    103         int n;
    104 
    105         cmd.uart_prefix = HCI_COMMAND_PKT;
    106         cmd.hci_hdr.opcode = 0xff36;
    107         cmd.hci_hdr.plen = sizeof(uint32_t);
    108         cmd.speed = speed;
    109 
    110         fprintf(stderr, "Setting speed to %d\n", speed);
    111         n = write(fd, &cmd, sizeof(cmd));
    112         if (n < 0) {
    113                 perror("Failed to write speed-set command");
    114                 return -1;
    115         }
    116         if (n < (int)sizeof(cmd)) {
    117                 fprintf(stderr, "Wanted to write %d bytes, could only write %d. "
    118                 "Stop\n", (int)sizeof(cmd), n);
    119                 return -1;
    120         }
    121         /* Parse speed-change reply */
    122         if (read_command_complete(fd, cmd.hci_hdr.opcode, cmd.hci_hdr.plen) < 0) {
    123                 return -1;
    124         }
    125         if (set_speed(fd, ti, speed) < 0) {
    126                 perror("Can't set baud rate");
    127                 return -1;
    128         }
    129         return 0;
    130 }
    131 
    132 static int texas_load_firmware(int fd, const char *firmware) {
    133 
    134 	int fw = open(firmware, O_RDONLY);
    135 
    136 	fprintf(stdout, "Opening firmware file: %s\n", firmware);
    137 
    138 	FAILIF(fw < 0,
    139 		   "Could not open firmware file %s: %s (%d).\n",
    140 		   firmware, strerror(errno), errno);
    141 
    142 	fprintf(stdout, "Uploading firmware...\n");
    143 	do {
    144 		/* Read each command and wait for a response. */
    145 		unsigned char data[1024];
    146 		unsigned char cmdp[1 + sizeof(hci_command_hdr)];
    147 		hci_command_hdr *cmd = (hci_command_hdr *)(cmdp + 1);
    148 		int nr;
    149 		nr = read(fw, cmdp, sizeof(cmdp));
    150 		if (!nr)
    151 			break;
    152 		FAILIF(nr != sizeof(cmdp), "Could not read H4 + HCI header!\n");
    153 		FAILIF(*cmdp != HCI_COMMAND_PKT, "Command is not an H4 command packet!\n");
    154 
    155 		FAILIF(read(fw, data, cmd->plen) != cmd->plen,
    156 			   "Could not read %d bytes of data for command with opcode %04x!\n",
    157 			   cmd->plen,
    158 			   cmd->opcode);
    159 
    160 		{
    161 			int nw;
    162 #if 0
    163 			fprintf(stdout, "\topcode 0x%04x (%d bytes of data).\n",
    164 					cmd->opcode,
    165 					cmd->plen);
    166 #endif
    167 			struct iovec iov_cmd[2];
    168 			iov_cmd[0].iov_base = cmdp;
    169 			iov_cmd[0].iov_len	= sizeof(cmdp);
    170 			iov_cmd[1].iov_base = data;
    171 			iov_cmd[1].iov_len	= cmd->plen;
    172 			nw = writev(fd, iov_cmd, 2);
    173 			FAILIF(nw != (int) sizeof(cmd) +	cmd->plen,
    174 				   "Could not send entire command (sent only %d bytes)!\n",
    175 				   nw);
    176 		}
    177 
    178 		/* Wait for response */
    179 		if (read_command_complete(fd,
    180 								  cmd->opcode,
    181 								  cmd->plen) < 0) {
    182 			return -1;
    183 		}
    184 
    185 	} while(1);
    186 	fprintf(stdout, "Firmware upload successful.\n");
    187 
    188 	close(fw);
    189 	return 0;
    190 }
    191 
    192 int texasalt_init(int fd, int speed, struct termios *ti)
    193 {
    194 	struct timespec tm = {0, 50000};
    195 	char cmd[4];
    196 	unsigned char resp[100];		/* Response */
    197 	int n;
    198 
    199 	memset(resp,'\0', 100);
    200 
    201 	/* It is possible to get software version with manufacturer specific
    202 	   HCI command HCI_VS_TI_Version_Number. But the only thing you get more
    203 	   is if this is point-to-point or point-to-multipoint module */
    204 
    205 	/* Get Manufacturer and LMP version */
    206 	cmd[0] = HCI_COMMAND_PKT;
    207 	cmd[1] = 0x01;
    208 	cmd[2] = 0x10;
    209 	cmd[3] = 0x00;
    210 
    211 	do {
    212 		n = write(fd, cmd, 4);
    213 		if (n < 0) {
    214 			perror("Failed to write init command (READ_LOCAL_VERSION_INFORMATION)");
    215 			return -1;
    216 		}
    217 		if (n < 4) {
    218 			fprintf(stderr, "Wanted to write 4 bytes, could only write %d. Stop\n", n);
    219 			return -1;
    220 		}
    221 
    222 		/* Read reply. */
    223 		if (read_hci_event(fd, resp, 100) < 0) {
    224 			perror("Failed to read init response (READ_LOCAL_VERSION_INFORMATION)");
    225 			return -1;
    226 		}
    227 
    228 		/* Wait for command complete event for our Opcode */
    229 	} while (resp[4] != cmd[1] && resp[5] != cmd[2]);
    230 
    231 	/* Verify manufacturer */
    232 	if ((resp[11] & 0xFF) != 0x0d)
    233 		fprintf(stderr,"WARNING : module's manufacturer is not Texas Instrument\n");
    234 
    235 	/* Print LMP version */
    236 	fprintf(stderr, "Texas module LMP version : 0x%02x\n", resp[10] & 0xFF);
    237 
    238 	/* Print LMP subversion */
    239 	{
    240 		unsigned short lmp_subv = resp[13] | (resp[14] << 8);
    241 		unsigned short brf_chip = (lmp_subv & 0x7c00) >> 10;
    242 		static const char *c_brf_chip[8] = {
    243 			"unknown",
    244 			"unknown",
    245 			"brf6100",
    246 			"brf6150",
    247 			"brf6300",
    248 			"brf6350",
    249 			"unknown",
    250 			"wl1271"
    251 		};
    252 		char fw[100];
    253 
    254 		fprintf(stderr, "Texas module LMP sub-version : 0x%04x\n", lmp_subv);
    255 
    256 		fprintf(stderr,
    257 				"\tinternal version freeze: %d\n"
    258 				"\tsoftware version: %d\n"
    259 				"\tchip: %s (%d)\n",
    260 				lmp_subv & 0x7f,
    261 				((lmp_subv & 0x8000) >> (15-3)) | ((lmp_subv & 0x380) >> 7),
    262 				((brf_chip > 7) ? "unknown" : c_brf_chip[brf_chip]),
    263 				brf_chip);
    264 
    265 		sprintf(fw, "/etc/firmware/%s.bin", c_brf_chip[brf_chip]);
    266 		texas_change_speed(fd, ti, speed);
    267 		texas_load_firmware(fd, fw);
    268 	}
    269 	nanosleep(&tm, NULL);
    270 	return 0;
    271 }
    272