--- /dev/null
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2014 Intel Corporation. All rights reserved.
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dirent.h>
+#include <time.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
+
+#include "hciattach.h"
+
+#ifndef FIRMWARE_DIR
+#define FIRMWARE_DIR "/etc/firmware"
+#endif
+
+#define FW_EXT ".hcd"
+
+#define BCM43XX_CLOCK_48 1
+#define BCM43XX_CLOCK_24 2
+
+#define CMD_SUCCESS 0x00
+
+#define CC_MIN_SIZE 7
+
+#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
+
+static int bcm43xx_read_local_name(int fd, char *name, size_t size)
+{
+ unsigned char cmd[] = { HCI_COMMAND_PKT, 0x14, 0x0C, 0x00 };
+ unsigned char *resp;
+ unsigned int name_len;
+
+ resp = malloc(size + CC_MIN_SIZE);
+ if (!resp)
+ return -1;
+
+ tcflush(fd, TCIOFLUSH);
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write read local name command\n");
+ goto fail;
+ }
+
+ if (read_hci_event(fd, resp, size) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to read local name, invalid HCI event\n");
+ goto fail;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to read local name, command failure\n");
+ goto fail;
+ }
+
+ name_len = resp[2] - 1;
+
+ strncpy(name, (char *) &resp[7], MIN(name_len, size));
+ name[size - 1] = 0;
+
+ free(resp);
+ return 0;
+
+fail:
+ free(resp);
+ return -1;
+}
+
+static int bcm43xx_reset(int fd)
+{
+ unsigned char cmd[] = { HCI_COMMAND_PKT, 0x03, 0x0C, 0x00 };
+ unsigned char resp[CC_MIN_SIZE];
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write reset command\n");
+ return -1;
+ }
+
+ if (read_hci_event(fd, resp, sizeof(resp)) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to reset chip, invalid HCI event\n");
+ return -1;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to reset chip, command failure\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bcm43xx_set_bdaddr(int fd, const char *bdaddr)
+{
+ unsigned char cmd[] =
+ { HCI_COMMAND_PKT, 0x01, 0xfc, 0x06, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 };
+ unsigned char resp[CC_MIN_SIZE];
+
+ printf("Set BDADDR UART: %s\n", bdaddr);
+
+ if (str2ba(bdaddr, (bdaddr_t *) (&cmd[4])) < 0) {
+ fprintf(stderr, "Incorrect bdaddr\n");
+ return -1;
+ }
+
+ tcflush(fd, TCIOFLUSH);
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write set bdaddr command\n");
+ return -1;
+ }
+
+ if (read_hci_event(fd, resp, sizeof(resp)) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to set bdaddr, invalid HCI event\n");
+ return -1;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to set bdaddr, command failure\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bcm43xx_set_speed(int fd, uint32_t speed)
+{
+ unsigned char cmd[] =
+ { HCI_COMMAND_PKT, 0x18, 0xfc, 0x06, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 };
+ unsigned char resp[CC_MIN_SIZE];
+
+ printf("Set Controller UART speed to %d bit/s\n", speed);
+
+ cmd[6] = (uint8_t) (speed);
+ cmd[7] = (uint8_t) (speed >> 8);
+ cmd[8] = (uint8_t) (speed >> 16);
+ cmd[9] = (uint8_t) (speed >> 24);
+
+ tcflush(fd, TCIOFLUSH);
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write update baudrate command\n");
+ return -1;
+ }
+
+ if (read_hci_event(fd, resp, sizeof(resp)) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to update baudrate, invalid HCI event\n");
+ return -1;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to update baudrate, command failure\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bcm43xx_set_clock(int fd, unsigned char clock)
+{
+ unsigned char cmd[] = { HCI_COMMAND_PKT, 0x45, 0xfc, 0x01, 0x00 };
+ unsigned char resp[CC_MIN_SIZE];
+
+ printf("Set Controller clock (%d)\n", clock);
+
+ cmd[4] = clock;
+
+ tcflush(fd, TCIOFLUSH);
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write update clock command\n");
+ return -1;
+ }
+
+ if (read_hci_event(fd, resp, sizeof(resp)) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to update clock, invalid HCI event\n");
+ return -1;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to update clock, command failure\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bcm43xx_load_firmware(int fd, const char *fw)
+{
+ unsigned char cmd[] = { HCI_COMMAND_PKT, 0x2e, 0xfc, 0x00 };
+ struct timespec tm_mode = { 0, 50000 };
+ struct timespec tm_ready = { 0, 2000000 };
+ unsigned char resp[CC_MIN_SIZE];
+ unsigned char tx_buf[1024];
+ int len, fd_fw, n;
+
+ printf("Flash firmware %s\n", fw);
+
+ fd_fw = open(fw, O_RDONLY);
+ if (fd_fw < 0) {
+ fprintf(stderr, "Unable to open firmware (%s)\n", fw);
+ return -1;
+ }
+
+ tcflush(fd, TCIOFLUSH);
+
+ if (write(fd, cmd, sizeof(cmd)) != sizeof(cmd)) {
+ fprintf(stderr, "Failed to write download mode command\n");
+ goto fail;
+ }
+
+ if (read_hci_event(fd, resp, sizeof(resp)) < CC_MIN_SIZE) {
+ fprintf(stderr, "Failed to load firmware, invalid HCI event\n");
+ goto fail;
+ }
+
+ if (resp[4] != cmd[1] || resp[5] != cmd[2] || resp[6] != CMD_SUCCESS) {
+ fprintf(stderr, "Failed to load firmware, command failure\n");
+ goto fail;
+ }
+
+ /* Wait 50ms to let the firmware placed in download mode */
+ nanosleep(&tm_mode, NULL);
+
+ tcflush(fd, TCIOFLUSH);
+
+ while ((n = read(fd_fw, &tx_buf[1], 3))) {
+ if (n < 0) {
+ fprintf(stderr, "Failed to read firmware\n");
+ goto fail;
+ }
+
+ tx_buf[0] = HCI_COMMAND_PKT;
+
+ len = tx_buf[3];
+
+ if (read(fd_fw, &tx_buf[4], len) < 0) {
+ fprintf(stderr, "Failed to read firmware\n");
+ goto fail;
+ }
+
+ if (write(fd, tx_buf, len + 4) != (len + 4)) {
+ fprintf(stderr, "Failed to write firmware\n");
+ goto fail;
+ }
+
+ read_hci_event(fd, resp, sizeof(resp));
+ tcflush(fd, TCIOFLUSH);
+ }
+
+ /* Wait for firmware ready */
+ nanosleep(&tm_ready, NULL);
+
+ close(fd_fw);
+ return 0;
+
+fail:
+ close(fd_fw);
+ return -1;
+}
+
+static int bcm43xx_locate_patch(const char *dir_name,
+ const char *chip_name, char *location)
+{
+ DIR *dir;
+ int ret = -1;
+
+ dir = opendir(dir_name);
+ if (!dir) {
+ fprintf(stderr, "Cannot open directory '%s': %s\n",
+ dir_name, strerror(errno));
+ return -1;
+ }
+
+ /* Recursively look for a BCM43XX*.hcd */
+ while (1) {
+ struct dirent *entry = readdir(dir);
+ if (!entry)
+ break;
+
+ if (entry->d_type & DT_DIR) {
+ char path[PATH_MAX];
+
+ if (!strcmp(entry->d_name, "..") || !strcmp(entry->d_name, "."))
+ continue;
+
+ snprintf(path, PATH_MAX, "%s/%s", dir_name, entry->d_name);
+
+ ret = bcm43xx_locate_patch(path, chip_name, location);
+ if (!ret)
+ break;
+ } else if (!strncmp(chip_name, entry->d_name, strlen(chip_name))) {
+ unsigned int name_len = strlen(entry->d_name);
+ size_t curs_ext = name_len - sizeof(FW_EXT) + 1;
+
+ if (curs_ext > name_len)
+ break;
+
+ if (strncmp(FW_EXT, &entry->d_name[curs_ext], sizeof(FW_EXT)))
+ break;
+
+ /* found */
+ snprintf(location, PATH_MAX, "%s/%s", dir_name, entry->d_name);
+ ret = 0;
+ break;
+ }
+ }
+
+ closedir(dir);
+
+ return ret;
+}
+
+int bcm43xx_init(int fd, int speed, struct termios *ti, const char *bdaddr)
+{
+ char chip_name[20];
+ char fw_path[PATH_MAX];
+
+ printf("bcm43xx_init\n");
+
+ if (bcm43xx_reset(fd))
+ return -1;
+
+ if (bcm43xx_read_local_name(fd, chip_name, sizeof(chip_name)))
+ return -1;
+
+ if (bcm43xx_locate_patch(FIRMWARE_DIR, chip_name, fw_path)) {
+ fprintf(stderr, "Patch not found, continue anyway\n");
+ } else {
+ if (bcm43xx_load_firmware(fd, fw_path))
+ return -1;
+
+ if (bcm43xx_reset(fd))
+ return -1;
+ }
+
+ if (bdaddr)
+ bcm43xx_set_bdaddr(fd, bdaddr);
+
+ if (speed > 3000000 && bcm43xx_set_clock(fd, BCM43XX_CLOCK_48))
+ return -1;
+
+ if (bcm43xx_set_speed(fd, speed))
+ return -1;
+
+ return 0;
+}
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