tools: add bcm43xx specific init in hciattach

Add a bcm43xx specific init sequence in hciattach
in order to initialize bcm43xx controllers.

1 files changed, 378 insertions, 0 deletions

diff --git a/tools/hciattach_bcm43xx.c b/tools/hciattach_bcm43xx.c
new file mode 100644
index 000000000..ad9b239be
--- /dev/null
+++ b/tools/hciattach_bcm43xx.c
@@ -0,0 +1,378 @@
+/*
+ *
+ *  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;
+}