[PATCH v4] Firmware download for Qualcomm Bluetooth devices

[Matthew Wilson <mtwilson@codeaurora.org>]

Configures device address from hciattach parameter.
UART speed limited to 115200.
Requires separate device specific firmware.
---
 Makefile.tools             |    3 +-
 tools/hciattach.c          |   10 ++
 tools/hciattach.h          |    1 +
 tools/hciattach_qualcomm.c |  279 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 292 insertions(+), 1 deletions(-)
 create mode 100644 tools/hciattach_qualcomm.c

diff --git a/Makefile.tools b/Makefile.tools
index 8ee1972..1c46542 100644
--- a/Makefile.tools
+++ b/Makefile.tools
@@ -24,7 +24,8 @@ tools_hciattach_SOURCES = tools/hciattach.c tools/hciattach.h \
 						tools/hciattach_st.c \
 						tools/hciattach_ti.c \
 						tools/hciattach_tialt.c \
-						tools/hciattach_ath3k.c
+						tools/hciattach_ath3k.c \
+						tools/hciattach_qualcomm.c
 tools_hciattach_LDADD = lib/libbluetooth.la
 
 tools_hciconfig_SOURCES = tools/hciconfig.c tools/csr.h tools/csr.c \
diff --git a/tools/hciattach.c b/tools/hciattach.c
index 5662f57..fd53710 100644
--- a/tools/hciattach.c
+++ b/tools/hciattach.c
@@ -312,6 +312,11 @@ static int ath3k_pm(int fd, struct uart_t *u, struct termios *ti)
 	return ath3k_post(fd, u->pm);
 }
 
+static int qualcomm(int fd, struct uart_t *u, struct termios *ti)
+{
+	return qualcomm_init(fd, u->speed, ti, u->bdaddr);
+}
+
 static int read_check(int fd, void *buf, int count)
 {
 	int res;
@@ -1116,6 +1121,11 @@ struct uart_t uart[] = {
 
 	{ "ath3k",    0x0000, 0x0000, HCI_UART_ATH3K, 115200, 115200,
 			FLOW_CTL, DISABLE_PM, NULL, ath3k_ps, ath3k_pm  },
+
+	/* QUALCOMM BTS */
+	{ "qualcomm",   0x0000, 0x0000, HCI_UART_H4,   115200, 115200,
+			FLOW_CTL, DISABLE_PM, NULL, qualcomm, NULL },
+
 	{ NULL, 0 }
 };
 
diff --git a/tools/hciattach.h b/tools/hciattach.h
index c133321..2d26b77 100644
--- a/tools/hciattach.h
+++ b/tools/hciattach.h
@@ -52,3 +52,4 @@ int stlc2500_init(int fd, bdaddr_t *bdaddr);
 int bgb2xx_init(int dd, bdaddr_t *bdaddr);
 int ath3k_init(int fd, char *bdaddr, int speed);
 int ath3k_post(int fd, int pm);
+int qualcomm_init(int fd, int speed, struct termios *ti, const char *bdaddr);
diff --git a/tools/hciattach_qualcomm.c b/tools/hciattach_qualcomm.c
new file mode 100644
index 0000000..b0df4b2
--- /dev/null
+++ b/tools/hciattach_qualcomm.c
@@ -0,0 +1,279 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2005-2010  Marcel Holtmann <marcel@holtmann.org>
+ *  Copyright (c) 2010, Code Aurora Forum. 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 <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <syslog.h>
+#include <termios.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/poll.h>
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
+
+#include "hciattach.h"
+
+#define FAILIF(x, args...) do { \
+	if (x) { \
+		fprintf(stderr, ##args); \
+		return -1; \
+	} \
+} while (0)
+
+typedef struct {
+	uint8_t uart_prefix;
+	hci_event_hdr hci_hdr;
+	evt_cmd_complete cmd_complete;
+	uint8_t status;
+	uint8_t data[16];
+} __attribute__((packed)) command_complete_t;
+
+static int read_command_complete(int fd,
+					unsigned short opcode,
+					unsigned char len)
+{
+	command_complete_t resp;
+	unsigned char vsevent[512];
+	int n;
+
+	/* Read reply. */
+	n = read_hci_event(fd, vsevent, sizeof(vsevent));
+	FAILIF(n < 0, "Failed to read response");
+
+	FAILIF(vsevent[1] != 0xFF, "Failed to read response");
+
+	n = read_hci_event(fd, (unsigned char *)&resp, sizeof(resp));
+	FAILIF(n < 0, "Failed to read response");
+
+	/* event must be event-complete */
+	FAILIF(resp.hci_hdr.evt != EVT_CMD_COMPLETE,
+		"Error in response: not a cmd-complete event, "
+		"but 0x%02x!\n", resp.hci_hdr.evt);
+
+	FAILIF(resp.hci_hdr.plen < 4, /* plen >= 4 for EVT_CMD_COMPLETE */
+		"Error in response: plen is not >= 4, but 0x%02x!\n",
+		resp.hci_hdr.plen);
+
+	/* cmd-complete event: opcode */
+	FAILIF(resp.cmd_complete.opcode != 0,
+		"Error in response: opcode is 0x%04x, not 0!",
+		resp.cmd_complete.opcode);
+
+	return resp.status == 0 ? 0 : -1;
+}
+
+static int qualcomm_load_firmware(int fd,
+					const char *firmware,
+					const char *bdaddr_s)
+{
+
+	int fw = open(firmware, O_RDONLY);
+
+	fprintf(stdout, "Opening firmware file: %s\n", firmware);
+
+	FAILIF(fw < 0,
+		"Could not open firmware file %s: %s (%d).\n",
+		firmware, strerror(errno), errno);
+
+	fprintf(stdout, "Uploading firmware...\n");
+	do {
+		/* Read each command and wait for a response. */
+		unsigned char data[1024];
+		unsigned char cmdp[1 + sizeof(hci_command_hdr)];
+		hci_command_hdr *cmd = (hci_command_hdr *)(cmdp + 1);
+		int nr;
+		nr = read(fw, cmdp, sizeof(cmdp));
+		if (!nr)
+			break;
+		FAILIF(nr != sizeof(cmdp),
+			"Could not read H4 + HCI header!\n");
+		FAILIF(*cmdp != HCI_COMMAND_PKT,
+			"Command is not an H4 command packet!\n");
+
+		FAILIF(read(fw, data, cmd->plen) != cmd->plen,
+			"Could not read %d bytes of data \
+			for command with opcode %04x!\n",
+			cmd->plen,
+			cmd->opcode);
+
+		if ((data[0] == 1) && (data[1] == 2) && (data[2] == 6)) {
+			bdaddr_t bdaddr;
+			if (bdaddr_s != NULL) {
+				(void) str2ba(bdaddr_s, &bdaddr);
+				memcpy(&data[3], &bdaddr, sizeof(bdaddr_t));
+			}
+		}
+
+		{
+			int nw;
+			struct iovec iov_cmd[2];
+			iov_cmd[0].iov_base = cmdp;
+			iov_cmd[0].iov_len	= sizeof(cmdp);
+			iov_cmd[1].iov_base = data;
+			iov_cmd[1].iov_len	= cmd->plen;
+			nw = writev(fd, iov_cmd, 2);
+			FAILIF(nw != (int) sizeof(cmdp) + cmd->plen,
+				"Could not send entire command \
+				(sent only %d bytes)!\n",
+				nw);
+		}
+
+		/* Wait for response */
+		if (read_command_complete(fd, cmd->opcode, cmd->plen) < 0)
+		{
+			return -1;
+		}
+
+	} while (1);
+	fprintf(stdout, "Firmware upload successful.\n");
+
+	close(fw);
+	return 0;
+}
+
+int qualcomm_init(int fd, int speed, struct termios *ti, const char *bdaddr)
+{
+	struct timespec tm = {0, 50000};
+	char cmd[5];
+	unsigned char resp[100];		/* Response */
+	char fw[100];
+	int n;
+
+	memset(resp, '\0', 100);
+
+	/* Get Manufacturer and LMP version */
+	cmd[0] = HCI_COMMAND_PKT;
+	cmd[1] = 0x01;
+	cmd[2] = 0x10;
+	cmd[3] = 0x00;
+
+	do {
+		n = write(fd, cmd, 4);
+		if (n < 4) {
+			perror("Failed to write init command");
+			return -1;
+		}
+
+		/* Read reply. */
+		if (read_hci_event(fd, resp, 100) < 0) {
+			perror("Failed to read init response");
+			return -1;
+		}
+
+		/* Wait for command complete event for our Opcode */
+	} while (resp[4] != cmd[1] && resp[5] != cmd[2]);
+
+	/* Verify manufacturer */
+	if ((resp[11] & 0xFF) != 0x1d)
+		fprintf(stderr,
+			"WARNING : module's manufacturer is not Qualcomm\n");
+
+	/* Print LMP version */
+	fprintf(stderr,
+		"Qualcomm module LMP version : 0x%02x\n", resp[10] & 0xFF);
+
+	/* Print LMP subversion */
+	{
+		unsigned short lmp_subv = resp[13] | (resp[14] << 8);
+
+		fprintf(stderr,
+			"Qualcomm module LMP sub-version : 0x%04x\n", lmp_subv);
+
+	}
+
+	/* Get SoC type */
+	cmd[0] = HCI_COMMAND_PKT;
+	cmd[1] = 0x00;
+	cmd[2] = 0xFC;
+	cmd[3] = 0x01;
+	cmd[4] = 0x06;
+
+	do {
+		n = write(fd, cmd, 5);
+		if (n < 5) {
+			perror("Failed to write vendor init command");
+			return -1;
+		}
+
+		/* Read reply. */
+		if ((n = read_hci_event(fd, resp, 100)) < 0) {
+			perror("Failed to read vendor init response");
+			return -1;
+		}
+
+	} while (resp[3] != 0 && resp[4] != 2);
+
+	snprintf(fw, sizeof(fw),
+		"/etc/firmware/%c%c%c%c%c%c_%c%c%c%c.bin",
+		resp[18], resp[19], resp[20], resp[21],
+		resp[22], resp[23],
+		resp[32], resp[33], resp[34], resp[35]);
+
+	/* Wait for command complete event for our Opcode */
+	if (read_hci_event(fd, resp, 100) < 0) {
+		perror("Failed to read init response");
+		return -1;
+	}
+
+	qualcomm_load_firmware(fd, fw, bdaddr);
+
+	/* Reset */
+	cmd[0] = HCI_COMMAND_PKT;
+	cmd[1] = 0x03;
+	cmd[2] = 0x0C;
+	cmd[3] = 0x00;
+
+	do {
+		n = write(fd, cmd, 4);
+		if (n < 4) {
+			perror("Failed to write reset command");
+			return -1;
+		}
+
+		/* Read reply. */
+		if ((n = read_hci_event(fd, resp, 100)) < 0) {
+			perror("Failed to read reset response");
+			return -1;
+		}
+
+	} while (resp[4] != cmd[1] && resp[5] != cmd[2]);
+
+	nanosleep(&tm, NULL);
+	return 0;
+}
-- 
1.7.1.1

--
Matthew Wilson
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum