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garmin_gps: Coding style 

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-07-22 11:11:44 +01:00 коммит произвёл Linus Torvalds
Родитель 64701e8122
Коммит af6d780b57
1 изменённых файлов: 176 добавлений и 178 удалений
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354
drivers/usb/serial/garmin_gps.c
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@ -33,7 +33,7 @@
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include <asm/atomic.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
@ -44,7 +44,7 @@
static int initial_mode = 1;
/* debug flag */
static int debug = 0;
static int debug;
#define GARMIN_VENDOR_ID 0x091E
@ -56,7 +56,7 @@ static int debug = 0;
#define VERSION_MINOR 31
#define _STR(s) #s
#define _DRIVER_VERSION(a,b) "v" _STR(a) "." _STR(b)
#define _DRIVER_VERSION(a, b) "v" _STR(a) "." _STR(b)
#define DRIVER_VERSION _DRIVER_VERSION(VERSION_MAJOR, VERSION_MINOR)
#define DRIVER_AUTHOR "hermann kneissel"
#define DRIVER_DESC "garmin gps driver"
@ -65,37 +65,37 @@ static int debug = 0;
#define EINVPKT 1000 /* invalid packet structure */
// size of the header of a packet using the usb protocol
/* size of the header of a packet using the usb protocol */
#define GARMIN_PKTHDR_LENGTH 12
// max. possible size of a packet using the serial protocol
#define MAX_SERIAL_PKT_SIZ (3+255+3)
/* max. possible size of a packet using the serial protocol */
#define MAX_SERIAL_PKT_SIZ (3 + 255 + 3)
// max. possible size of a packet with worst case stuffing
#define MAX_SERIAL_PKT_SIZ_STUFFED MAX_SERIAL_PKT_SIZ+256
/* max. possible size of a packet with worst case stuffing */
#define MAX_SERIAL_PKT_SIZ_STUFFED (MAX_SERIAL_PKT_SIZ + 256)
// size of a buffer able to hold a complete (no stuffing) packet
// (the document protocol does not contain packets with a larger
// size, but in theory a packet may be 64k+12 bytes - if in
// later protocol versions larger packet sizes occur, this value
// should be increased accordingly, so the input buffer is always
// large enough the store a complete packet inclusive header)
#define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ)
/* size of a buffer able to hold a complete (no stuffing) packet
* (the document protocol does not contain packets with a larger
* size, but in theory a packet may be 64k+12 bytes - if in
* later protocol versions larger packet sizes occur, this value
* should be increased accordingly, so the input buffer is always
* large enough the store a complete packet inclusive header) */
#define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ)
// size of a buffer able to hold a complete (incl. stuffing) packet
#define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED)
/* size of a buffer able to hold a complete (incl. stuffing) packet */
#define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED)
// where to place the packet id of a serial packet, so we can
// prepend the usb-packet header without the need to move the
// packets data
/* where to place the packet id of a serial packet, so we can
* prepend the usb-packet header without the need to move the
* packets data */
#define GSP_INITIAL_OFFSET (GARMIN_PKTHDR_LENGTH-2)
// max. size of incoming private packets (header+1 param)
/* max. size of incoming private packets (header+1 param) */
#define PRIVPKTSIZ (GARMIN_PKTHDR_LENGTH+4)
#define GARMIN_LAYERID_TRANSPORT 0
#define GARMIN_LAYERID_APPL 20
// our own layer-id to use for some control mechanisms
/* our own layer-id to use for some control mechanisms */
#define GARMIN_LAYERID_PRIVATE 0x01106E4B
#define GARMIN_PKTID_PVT_DATA 51
@ -103,7 +103,7 @@ static int debug = 0;
#define CMND_ABORT_TRANSFER 0
// packet ids used in private layer
/* packet ids used in private layer */
#define PRIV_PKTID_SET_DEBUG 1
#define PRIV_PKTID_SET_MODE 2
#define PRIV_PKTID_INFO_REQ 3
@ -121,7 +121,8 @@ static int debug = 0;
struct garmin_packet {
struct list_head list;
int seq;
int size; // the real size of the data array, always > 0
/* the real size of the data array, always > 0 */
int size;
__u8 data[1];
};
@ -164,7 +165,7 @@ struct garmin_data {
#define MODE_NATIVE 0
#define MODE_GARMIN_SERIAL 1
// Flags used in garmin_data.flags:
/* Flags used in garmin_data.flags: */
#define FLAGS_SESSION_REPLY_MASK 0x00C0
#define FLAGS_SESSION_REPLY1_SEEN 0x0080
#define FLAGS_SESSION_REPLY2_SEEN 0x0040
@ -185,7 +186,7 @@ struct garmin_data {
/* function prototypes */
static void gsp_next_packet(struct garmin_data * garmin_data_p);
static void gsp_next_packet(struct garmin_data *garmin_data_p);
static int garmin_write_bulk(struct usb_serial_port *port,
const unsigned char *buf, int count,
int dismiss_ack);
@ -217,12 +218,13 @@ static unsigned char const PRIVATE_REQ[]
static struct usb_device_id id_table [] = {
/* the same device id seems to be used by all usb enabled gps devices */
{ USB_DEVICE(GARMIN_VENDOR_ID, 3 ) },
/* the same device id seems to be used by all
usb enabled GPS devices */
{ USB_DEVICE(GARMIN_VENDOR_ID, 3) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table);
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_driver garmin_driver = {
.name = "garmin_gps",
@ -233,9 +235,10 @@ static struct usb_driver garmin_driver = {
};
static inline int noResponseFromAppLayer(struct garmin_data * garmin_data_p)
static inline int noResponseFromAppLayer(struct garmin_data *garmin_data_p)
{
return atomic_read(&garmin_data_p->req_count) == atomic_read(&garmin_data_p->resp_count);
return atomic_read(&garmin_data_p->req_count) ==
atomic_read(&garmin_data_p->resp_count);
}
@ -261,10 +264,10 @@ static inline int getDataLength(const __u8 *usbPacket)
*/
static inline int isAbortTrfCmnd(const unsigned char *buf)
{
if (0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ,
sizeof(GARMIN_STOP_TRANSFER_REQ)) ||
0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2,
sizeof(GARMIN_STOP_TRANSFER_REQ_V2)))
if (0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ,
sizeof(GARMIN_STOP_TRANSFER_REQ)) ||
0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2,
sizeof(GARMIN_STOP_TRANSFER_REQ_V2)))
return 1;
else
return 0;
@ -279,7 +282,7 @@ static void send_to_tty(struct usb_serial_port *port,
if (tty && actual_length) {
usb_serial_debug_data(debug, &port->dev,
usb_serial_debug_data(debug, &port->dev,
__func__, actual_length, data);
tty_buffer_request_room(tty, actual_length);
@ -296,7 +299,7 @@ static void send_to_tty(struct usb_serial_port *port,
/*
* queue a received (usb-)packet for later processing
*/
static int pkt_add(struct garmin_data * garmin_data_p,
static int pkt_add(struct garmin_data *garmin_data_p,
unsigned char *data, unsigned int data_length)
{
int state = 0;
@ -307,7 +310,7 @@ static int pkt_add(struct garmin_data * garmin_data_p,
/* process only packets containg data ... */
if (data_length) {
pkt = kmalloc(sizeof(struct garmin_packet)+data_length,
GFP_ATOMIC);
GFP_ATOMIC);
if (pkt == NULL) {
dev_err(&garmin_data_p->port->dev, "out of memory\n");
return 0;
@ -325,16 +328,15 @@ static int pkt_add(struct garmin_data * garmin_data_p,
/* in serial mode, if someone is waiting for data from
the device, iconvert and send the next packet to tty. */
if (result && (state == STATE_GSP_WAIT_DATA)) {
if (result && (state == STATE_GSP_WAIT_DATA))
gsp_next_packet(garmin_data_p);
}
}
return result;
}
/* get the next pending packet */
static struct garmin_packet *pkt_pop(struct garmin_data * garmin_data_p)
static struct garmin_packet *pkt_pop(struct garmin_data *garmin_data_p)
{
unsigned long flags;
struct garmin_packet *result = NULL;
@ -350,7 +352,7 @@ static struct garmin_packet *pkt_pop(struct garmin_data * garmin_data_p)
/* free up all queued data */
static void pkt_clear(struct garmin_data * garmin_data_p)
static void pkt_clear(struct garmin_data *garmin_data_p)
{
unsigned long flags;
struct garmin_packet *result = NULL;
@ -372,7 +374,7 @@ static void pkt_clear(struct garmin_data * garmin_data_p)
******************************************************************************/
/* send an ack packet back to the tty */
static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id)
static int gsp_send_ack(struct garmin_data *garmin_data_p, __u8 pkt_id)
{
__u8 pkt[10];
__u8 cksum = 0;
@ -391,9 +393,8 @@ static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id)
*ptr++ = pkt_id;
cksum += pkt_id;
if (pkt_id == DLE) {
if (pkt_id == DLE)
*ptr++ = DLE;
}
*ptr++ = 0;
*ptr++ = 0xFF & (-cksum);
@ -415,12 +416,12 @@ static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id)
* at GSP_INITIAL_OFFSET.
*
* count - number of bytes in the input buffer including space reserved for
* the usb header: GSP_INITIAL_OFFSET + number of bytes in packet
* the usb header: GSP_INITIAL_OFFSET + number of bytes in packet
* (including pkt-id, data-length a. cksum)
*/
static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
static int gsp_rec_packet(struct garmin_data *garmin_data_p, int count)
{
const __u8* recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET;
const __u8 *recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET;
__le32 *usbdata = (__le32 *) garmin_data_p->inbuffer;
int cksum = 0;
@ -440,8 +441,8 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
cksum += *recpkt++;
cksum += *recpkt++;
// sanity check, remove after test ...
if ((__u8*)&(usbdata[3]) != recpkt) {
/* sanity check, remove after test ... */
if ((__u8 *)&(usbdata[3]) != recpkt) {
dbg("%s - ptr mismatch %p - %p",
__func__, &(usbdata[4]), recpkt);
return -EINVPKT;
@ -462,7 +463,7 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
usbdata[1] = __cpu_to_le32(pktid);
usbdata[2] = __cpu_to_le32(size);
garmin_write_bulk (garmin_data_p->port, garmin_data_p->inbuffer,
garmin_write_bulk(garmin_data_p->port, garmin_data_p->inbuffer,
GARMIN_PKTHDR_LENGTH+size, 0);
/* if this was an abort-transfer command, flush all
@ -495,7 +496,7 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
* if the input is an abort command, drop all queued data.
*/
static int gsp_receive(struct garmin_data * garmin_data_p,
static int gsp_receive(struct garmin_data *garmin_data_p,
const unsigned char *buf, int count)
{
unsigned long flags;
@ -504,10 +505,11 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
int i = 0;
__u8 *dest;
int size;
// dleSeen: set if last byte read was a DLE
/* dleSeen: set if last byte read was a DLE */
int dleSeen;
// skip: if set, skip incoming data until possible start of
// new packet
/* skip: if set, skip incoming data until possible start of
* new packet
*/
int skip;
__u8 data;
@ -521,14 +523,13 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
dbg("%s - dle=%d skip=%d size=%d count=%d",
__func__, dleSeen, skip, size, count);
if (size == 0) {
if (size == 0)
size = GSP_INITIAL_OFFSET;
}
while (offs < count) {
data = *(buf+offs);
offs ++;
offs++;
if (data == DLE) {
if (skip) { /* start of a new pkt */
@ -554,9 +555,8 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
ack_or_nak_seen = NAK;
dbg("NAK packet complete.");
} else {
dbg("packet complete "
"- id=0x%X.",
0xFF & data);
dbg("packet complete - id=0x%X.",
0xFF & data);
gsp_rec_packet(garmin_data_p, size);
}
@ -589,7 +589,7 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
garmin_data_p->insize = size;
// copy flags back to structure
/* copy flags back to structure */
if (skip)
garmin_data_p->flags |= FLAGS_GSP_SKIP;
else
@ -600,16 +600,13 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
else
garmin_data_p->flags &= ~FLAGS_GSP_DLESEEN;
if (ack_or_nak_seen) {
if (ack_or_nak_seen)
garmin_data_p->state = STATE_GSP_WAIT_DATA;
}
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
if (ack_or_nak_seen) {
if (ack_or_nak_seen)
gsp_next_packet(garmin_data_p);
}
return count;
}
@ -623,7 +620,7 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
*
* return <0 on error, 0 if packet is incomplete or > 0 if packet was sent
*/
static int gsp_send(struct garmin_data * garmin_data_p,
static int gsp_send(struct garmin_data *garmin_data_p,
const unsigned char *buf, int count)
{
const unsigned char *src;
@ -631,11 +628,11 @@ static int gsp_send(struct garmin_data * garmin_data_p,
int pktid = 0;
int datalen = 0;
int cksum = 0;
int i=0;
int i = 0;
int k;
dbg("%s - state %d - %d bytes.", __func__,
garmin_data_p->state, count);
garmin_data_p->state, count);
k = garmin_data_p->outsize;
if ((k+count) > GPS_OUT_BUFSIZ) {
@ -650,7 +647,7 @@ static int gsp_send(struct garmin_data * garmin_data_p,
if (k >= GARMIN_PKTHDR_LENGTH) {
pktid = getPacketId(garmin_data_p->outbuffer);
datalen= getDataLength(garmin_data_p->outbuffer);
datalen = getDataLength(garmin_data_p->outbuffer);
i = GARMIN_PKTHDR_LENGTH + datalen;
if (k < i)
return 0;
@ -658,19 +655,18 @@ static int gsp_send(struct garmin_data * garmin_data_p,
return 0;
}
dbg("%s - %d bytes in buffer, %d bytes in pkt.", __func__,
k, i);
dbg("%s - %d bytes in buffer, %d bytes in pkt.", __func__, k, i);
/* garmin_data_p->outbuffer now contains a complete packet */
usb_serial_debug_data(debug, &garmin_data_p->port->dev,
__func__, k, garmin_data_p->outbuffer);
__func__, k, garmin_data_p->outbuffer);
garmin_data_p->outsize = 0;
if (GARMIN_LAYERID_APPL != getLayerId(garmin_data_p->outbuffer)) {
dbg("not an application packet (%d)",
getLayerId(garmin_data_p->outbuffer));
dbg("not an application packet (%d)",
getLayerId(garmin_data_p->outbuffer));
return -1;
}
@ -688,14 +684,14 @@ static int gsp_send(struct garmin_data * garmin_data_p,
k = 0;
src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH;
for (i=0; i<datalen; i++) {
for (i = 0; i < datalen; i++) {
if (*src++ == DLE)
k++;
}
src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH;
if (k > (GARMIN_PKTHDR_LENGTH-2)) {
/* can't add stuffing DLEs in place, move data to end
/* can't add stuffing DLEs in place, move data to end
of buffer ... */
dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen;
memcpy(dst, src, datalen);
@ -712,14 +708,14 @@ static int gsp_send(struct garmin_data * garmin_data_p,
if (datalen == DLE)
*dst++ = DLE;
for (i=0; i<datalen; i++) {
for (i = 0; i < datalen; i++) {
__u8 c = *src++;
*dst++ = c;
cksum += c;
if (c == DLE)
*dst++ = DLE;
}
cksum = 0xFF & -cksum;
*dst++ = cksum;
if (cksum == DLE)
@ -744,7 +740,7 @@ static int gsp_send(struct garmin_data * garmin_data_p,
/*
* Process the next pending data packet - if there is one
*/
static void gsp_next_packet(struct garmin_data * garmin_data_p)
static void gsp_next_packet(struct garmin_data *garmin_data_p)
{
struct garmin_packet *pkt = NULL;
@ -774,17 +770,17 @@ static void gsp_next_packet(struct garmin_data * garmin_data_p)
* buf contains the data read, it may span more than one packet
* or even incomplete packets
*/
static int nat_receive(struct garmin_data * garmin_data_p,
static int nat_receive(struct garmin_data *garmin_data_p,
const unsigned char *buf, int count)
{
unsigned long flags;
__u8 * dest;
__u8 *dest;
int offs = 0;
int result = count;
int len;
while (offs < count) {
// if buffer contains header, copy rest of data
/* if buffer contains header, copy rest of data */
if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH)
len = GARMIN_PKTHDR_LENGTH
+getDataLength(garmin_data_p->inbuffer);
@ -792,9 +788,9 @@ static int nat_receive(struct garmin_data * garmin_data_p,
len = GARMIN_PKTHDR_LENGTH;
if (len >= GPS_IN_BUFSIZ) {
/* seem to be an invalid packet, ignore rest of input */
dbg("%s - packet size too large: %d",
__func__, len);
/* seems to be an invalid packet, ignore rest
of input */
dbg("%s - packet size too large: %d", __func__, len);
garmin_data_p->insize = 0;
count = 0;
result = -EINVPKT;
@ -804,7 +800,7 @@ static int nat_receive(struct garmin_data * garmin_data_p,
len = (count-offs);
if (len > 0) {
dest = garmin_data_p->inbuffer
+garmin_data_p->insize;
+ garmin_data_p->insize;
memcpy(dest, buf+offs, len);
garmin_data_p->insize += len;
offs += len;
@ -816,17 +812,19 @@ static int nat_receive(struct garmin_data * garmin_data_p,
len = GARMIN_PKTHDR_LENGTH+
getDataLength(garmin_data_p->inbuffer);
if (garmin_data_p->insize >= len) {
garmin_write_bulk (garmin_data_p->port,
garmin_data_p->inbuffer,
len, 0);
garmin_write_bulk(garmin_data_p->port,
garmin_data_p->inbuffer,
len, 0);
garmin_data_p->insize = 0;
/* if this was an abort-transfer command,
flush all queued data. */
if (isAbortTrfCmnd(garmin_data_p->inbuffer)) {
spin_lock_irqsave(&garmin_data_p->lock, flags);
spin_lock_irqsave(&garmin_data_p->lock,
flags);
garmin_data_p->flags |= FLAGS_DROP_DATA;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
spin_unlock_irqrestore(
&garmin_data_p->lock, flags);
pkt_clear(garmin_data_p);
}
}
@ -842,7 +840,7 @@ static int nat_receive(struct garmin_data * garmin_data_p,
static void priv_status_resp(struct usb_serial_port *port)
{
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
__le32 *pkt = (__le32 *)garmin_data_p->privpkt;
pkt[0] = __cpu_to_le32(GARMIN_LAYERID_PRIVATE);
@ -852,7 +850,7 @@ static void priv_status_resp(struct usb_serial_port *port)
pkt[4] = __cpu_to_le32(garmin_data_p->mode);
pkt[5] = __cpu_to_le32(garmin_data_p->serial_num);
send_to_tty(port, (__u8*)pkt, 6*4);
send_to_tty(port, (__u8 *)pkt, 6 * 4);
}
@ -864,7 +862,7 @@ static int process_resetdev_request(struct usb_serial_port *port)
{
unsigned long flags;
int status;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
spin_lock_irqsave(&garmin_data_p->lock, flags);
garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED);
@ -872,8 +870,8 @@ static int process_resetdev_request(struct usb_serial_port *port)
garmin_data_p->serial_num = 0;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
usb_kill_urb (port->interrupt_in_urb);
dbg("%s - usb_reset_device", __func__ );
usb_kill_urb(port->interrupt_in_urb);
dbg("%s - usb_reset_device", __func__);
status = usb_reset_device(port->serial->dev);
if (status)
dbg("%s - usb_reset_device failed: %d",
@ -886,7 +884,7 @@ static int process_resetdev_request(struct usb_serial_port *port)
/*
* clear all cached data
*/
static int garmin_clear(struct garmin_data * garmin_data_p)
static int garmin_clear(struct garmin_data *garmin_data_p)
{
unsigned long flags;
int status = 0;
@ -896,8 +894,7 @@ static int garmin_clear(struct garmin_data * garmin_data_p)
if (port != NULL && atomic_read(&garmin_data_p->resp_count)) {
/* send a terminate command */
status = garmin_write_bulk(port, GARMIN_STOP_TRANSFER_REQ,
sizeof(GARMIN_STOP_TRANSFER_REQ),
1);
sizeof(GARMIN_STOP_TRANSFER_REQ), 1);
}
/* flush all queued data */
@ -920,28 +917,26 @@ static int garmin_init_session(struct usb_serial_port *port)
{
unsigned long flags;
struct usb_serial *serial = port->serial;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
int status = 0;
if (status == 0) {
usb_kill_urb (port->interrupt_in_urb);
usb_kill_urb(port->interrupt_in_urb);
dbg("%s - adding interrupt input", __func__);
port->interrupt_in_urb->dev = serial->dev;
status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (status)
dev_err(&serial->dev->dev,
"%s - failed submitting interrupt urb,"
" error %d\n",
__func__, status);
"%s - failed submitting interrupt urb, error %d\n",
__func__, status);
}
if (status == 0) {
dbg("%s - starting session ...", __func__);
garmin_data_p->state = STATE_ACTIVE;
status = garmin_write_bulk(port, GARMIN_START_SESSION_REQ,
sizeof(GARMIN_START_SESSION_REQ),
0);
sizeof(GARMIN_START_SESSION_REQ), 0);
if (status >= 0) {
@ -951,14 +946,14 @@ static int garmin_init_session(struct usb_serial_port *port)
/* not needed, but the win32 driver does it too ... */
status = garmin_write_bulk(port,
GARMIN_START_SESSION_REQ2,
sizeof(GARMIN_START_SESSION_REQ2),
0);
GARMIN_START_SESSION_REQ2,
sizeof(GARMIN_START_SESSION_REQ2), 0);
if (status >= 0) {
status = 0;
spin_lock_irqsave(&garmin_data_p->lock, flags);
garmin_data_p->ignorePkts++;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
spin_unlock_irqrestore(&garmin_data_p->lock,
flags);
}
}
}
@ -970,12 +965,12 @@ static int garmin_init_session(struct usb_serial_port *port)
static int garmin_open (struct tty_struct *tty,
static int garmin_open(struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp)
{
unsigned long flags;
int status = 0;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
dbg("%s - port %d", __func__, port->number);
@ -996,8 +991,8 @@ static int garmin_open (struct tty_struct *tty,
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
/* shutdown any bulk reads that might be going on */
usb_kill_urb (port->write_urb);
usb_kill_urb (port->read_urb);
usb_kill_urb(port->write_urb);
usb_kill_urb(port->read_urb);
if (garmin_data_p->state == STATE_RESET)
status = garmin_init_session(port);
@ -1008,10 +1003,10 @@ static int garmin_open (struct tty_struct *tty,
static void garmin_close(struct tty_struct *tty,
struct usb_serial_port *port, struct file * filp)
struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial = port->serial;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
dbg("%s - port %d - mode=%d state=%d flags=0x%X", __func__,
port->number, garmin_data_p->mode,
@ -1025,8 +1020,8 @@ static void garmin_close(struct tty_struct *tty,
garmin_clear(garmin_data_p);
/* shutdown our urbs */
usb_kill_urb (port->read_urb);
usb_kill_urb (port->write_urb);
usb_kill_urb(port->read_urb);
usb_kill_urb(port->write_urb);
if (!port->serial->disconnected) {
if (noResponseFromAppLayer(garmin_data_p) ||
@ -1042,20 +1037,22 @@ static void garmin_close(struct tty_struct *tty,
mutex_unlock(&port->serial->disc_mutex);
}
static void garmin_write_bulk_callback (struct urb *urb)
static void garmin_write_bulk_callback(struct urb *urb)
{
unsigned long flags;
struct usb_serial_port *port = urb->context;
int status = urb->status;
if (port) {
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p =
usb_get_serial_port_data(port);
dbg("%s - port %d", __func__, port->number);
if (GARMIN_LAYERID_APPL == getLayerId(urb->transfer_buffer)
&& (garmin_data_p->mode == MODE_GARMIN_SERIAL)) {
gsp_send_ack(garmin_data_p, ((__u8 *)urb->transfer_buffer)[4]);
gsp_send_ack(garmin_data_p,
((__u8 *)urb->transfer_buffer)[4]);
}
if (status) {
@ -1069,20 +1066,21 @@ static void garmin_write_bulk_callback (struct urb *urb)
usb_serial_port_softint(port);
}
/* Ignore errors that resulted from garmin_write_bulk with dismiss_ack=1 */
/* Ignore errors that resulted from garmin_write_bulk with
dismiss_ack = 1 */
/* free up the transfer buffer, as usb_free_urb() does not do this */
kfree (urb->transfer_buffer);
kfree(urb->transfer_buffer);
}
static int garmin_write_bulk (struct usb_serial_port *port,
static int garmin_write_bulk(struct usb_serial_port *port,
const unsigned char *buf, int count,
int dismiss_ack)
{
unsigned long flags;
struct usb_serial *serial = port->serial;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
struct urb *urb;
unsigned char *buffer;
int status;
@ -1094,7 +1092,7 @@ static int garmin_write_bulk (struct usb_serial_port *port,
garmin_data_p->flags &= ~FLAGS_DROP_DATA;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
buffer = kmalloc (count, GFP_ATOMIC);
buffer = kmalloc(count, GFP_ATOMIC);
if (!buffer) {
dev_err(&port->dev, "out of memory\n");
return -ENOMEM;
@ -1103,17 +1101,17 @@ static int garmin_write_bulk (struct usb_serial_port *port,
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
dev_err(&port->dev, "no more free urbs\n");
kfree (buffer);
kfree(buffer);
return -ENOMEM;
}
memcpy (buffer, buf, count);
memcpy(buffer, buf, count);
usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
usb_fill_bulk_urb (urb, serial->dev,
usb_sndbulkpipe (serial->dev,
port->bulk_out_endpointAddress),
usb_fill_bulk_urb(urb, serial->dev,
usb_sndbulkpipe(serial->dev,
port->bulk_out_endpointAddress),
buffer, count,
garmin_write_bulk_callback,
dismiss_ack ? NULL : port);
@ -1131,24 +1129,23 @@ static int garmin_write_bulk (struct usb_serial_port *port,
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
dev_err(&port->dev,
"%s - usb_submit_urb(write bulk) "
"failed with status = %d\n",
"%s - usb_submit_urb(write bulk) failed with status = %d\n",
__func__, status);
count = status;
}
/* we are done with this urb, so let the host driver
* really free it when it is finished with it */
usb_free_urb (urb);
usb_free_urb(urb);
return count;
}
static int garmin_write (struct tty_struct *tty, struct usb_serial_port *port,
static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
int pktid, pktsiz, len;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
__le32 *privpkt = (__le32 *)garmin_data_p->privpkt;
usb_serial_debug_data(debug, &port->dev, __func__, count, buf);
@ -1165,15 +1162,16 @@ static int garmin_write (struct tty_struct *tty, struct usb_serial_port *port,
pktid = getPacketId(garmin_data_p->privpkt);
if (count == (GARMIN_PKTHDR_LENGTH+pktsiz)
&& GARMIN_LAYERID_PRIVATE == getLayerId(garmin_data_p->privpkt)) {
&& GARMIN_LAYERID_PRIVATE ==
getLayerId(garmin_data_p->privpkt)) {
dbg("%s - processing private request %d",
__func__, pktid);
// drop all unfinished transfers
/* drop all unfinished transfers */
garmin_clear(garmin_data_p);
switch(pktid) {
switch (pktid) {
case PRIV_PKTID_SET_DEBUG:
if (pktsiz != 4)
@ -1228,25 +1226,25 @@ static int garmin_write_room(struct tty_struct *tty)
/*
* Report back the bytes currently available in the output buffer.
*/
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
return GPS_OUT_BUFSIZ-garmin_data_p->outsize;
}
static void garmin_read_process(struct garmin_data * garmin_data_p,
static void garmin_read_process(struct garmin_data *garmin_data_p,
unsigned char *data, unsigned data_length)
{
if (garmin_data_p->flags & FLAGS_DROP_DATA) {
/* abort-transfer cmd is actice */
dbg("%s - pkt dropped", __func__);
} else if (garmin_data_p->state != STATE_DISCONNECTED &&
garmin_data_p->state != STATE_RESET ) {
garmin_data_p->state != STATE_RESET) {
/* remember any appl.layer packets, so we know
if a reset is required or not when closing
the device */
if (0 == memcmp(data, GARMIN_APP_LAYER_REPLY,
sizeof(GARMIN_APP_LAYER_REPLY))) {
sizeof(GARMIN_APP_LAYER_REPLY))) {
atomic_inc(&garmin_data_p->resp_count);
}
@ -1256,9 +1254,8 @@ static void garmin_read_process(struct garmin_data * garmin_data_p,
if (garmin_data_p->flags & FLAGS_QUEUING) {
pkt_add(garmin_data_p, data, data_length);
} else if (garmin_data_p->mode == MODE_GARMIN_SERIAL) {
if (getLayerId(data) == GARMIN_LAYERID_APPL) {
if (getLayerId(data) == GARMIN_LAYERID_APPL)
pkt_add(garmin_data_p, data, data_length);
}
} else {
send_to_tty(garmin_data_p->port, data, data_length);
}
@ -1266,12 +1263,12 @@ static void garmin_read_process(struct garmin_data * garmin_data_p,
}
static void garmin_read_bulk_callback (struct urb *urb)
static void garmin_read_bulk_callback(struct urb *urb)
{
unsigned long flags;
struct usb_serial_port *port = urb->context;
struct usb_serial *serial = port->serial;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
int retval;
@ -1289,7 +1286,7 @@ static void garmin_read_bulk_callback (struct urb *urb)
return;
}
usb_serial_debug_data(debug, &port->dev,
usb_serial_debug_data(debug, &port->dev,
__func__, urb->actual_length, data);
garmin_read_process(garmin_data_p, data, urb->actual_length);
@ -1323,13 +1320,13 @@ static void garmin_read_bulk_callback (struct urb *urb)
}
static void garmin_read_int_callback (struct urb *urb)
static void garmin_read_int_callback(struct urb *urb)
{
unsigned long flags;
int retval;
struct usb_serial_port *port = urb->context;
struct usb_serial *serial = port->serial;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
@ -1355,30 +1352,31 @@ static void garmin_read_int_callback (struct urb *urb)
if (urb->actual_length == sizeof(GARMIN_BULK_IN_AVAIL_REPLY) &&
0 == memcmp(data, GARMIN_BULK_IN_AVAIL_REPLY,
sizeof(GARMIN_BULK_IN_AVAIL_REPLY))) {
sizeof(GARMIN_BULK_IN_AVAIL_REPLY))) {
dbg("%s - bulk data available.", __func__);
if (0 == (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) {
/* bulk data available */
usb_fill_bulk_urb (port->read_urb, serial->dev,
usb_rcvbulkpipe (serial->dev,
port->bulk_in_endpointAddress),
usb_fill_bulk_urb(port->read_urb, serial->dev,
usb_rcvbulkpipe(serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
garmin_read_bulk_callback, port);
retval = usb_submit_urb(port->read_urb, GFP_ATOMIC);
if (retval) {
dev_err(&port->dev,
"%s - failed submitting read urb, error %d\n",
__func__, retval);
"%s - failed submitting read urb, error %d\n",
__func__, retval);
} else {
spin_lock_irqsave(&garmin_data_p->lock, flags);
garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE;
/* do not send this packet to the user */
garmin_data_p->ignorePkts = 1;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
spin_unlock_irqrestore(&garmin_data_p->lock,
flags);
}
} else {
/* bulk-in transfer still active */
@ -1389,15 +1387,15 @@ static void garmin_read_int_callback (struct urb *urb)
} else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY))
&& 0 == memcmp(data, GARMIN_START_SESSION_REPLY,
sizeof(GARMIN_START_SESSION_REPLY))) {
sizeof(GARMIN_START_SESSION_REPLY))) {
spin_lock_irqsave(&garmin_data_p->lock, flags);
garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
/* save the serial number */
garmin_data_p->serial_num
= __le32_to_cpup((__le32*)(data+GARMIN_PKTHDR_LENGTH));
garmin_data_p->serial_num = __le32_to_cpup(
(__le32 *)(data+GARMIN_PKTHDR_LENGTH));
dbg("%s - start-of-session reply seen - serial %u.",
__func__, garmin_data_p->serial_num);
@ -1416,7 +1414,7 @@ static void garmin_read_int_callback (struct urb *urb)
}
port->interrupt_in_urb->dev = port->serial->dev;
retval = usb_submit_urb (urb, GFP_ATOMIC);
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(&urb->dev->dev,
"%s - Error %d submitting interrupt urb\n",
@ -1429,7 +1427,7 @@ static void garmin_read_int_callback (struct urb *urb)
* and then sets a timer to call itself again until all queued data
* is sent.
*/
static int garmin_flush_queue(struct garmin_data * garmin_data_p)
static int garmin_flush_queue(struct garmin_data *garmin_data_p)
{
unsigned long flags;
struct garmin_packet *pkt;
@ -1454,7 +1452,7 @@ static int garmin_flush_queue(struct garmin_data * garmin_data_p)
static void garmin_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
unsigned long flags;
dbg("%s - port %d", __func__, port->number);
@ -1466,10 +1464,10 @@ static void garmin_throttle(struct tty_struct *tty)
}
static void garmin_unthrottle (struct tty_struct *tty)
static void garmin_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
unsigned long flags;
int status;
@ -1513,7 +1511,7 @@ static int garmin_attach(struct usb_serial *serial)
{
int status = 0;
struct usb_serial_port *port = serial->port[0];
struct garmin_data * garmin_data_p = NULL;
struct garmin_data *garmin_data_p = NULL;
dbg("%s", __func__);
@ -1525,7 +1523,7 @@ static int garmin_attach(struct usb_serial *serial)
init_timer(&garmin_data_p->timer);
spin_lock_init(&garmin_data_p->lock);
INIT_LIST_HEAD(&garmin_data_p->pktlist);
//garmin_data_p->timer.expires = jiffies + session_timeout;
/* garmin_data_p->timer.expires = jiffies + session_timeout; */
garmin_data_p->timer.data = (unsigned long)garmin_data_p;
garmin_data_p->timer.function = timeout_handler;
garmin_data_p->port = port;
@ -1542,13 +1540,13 @@ static int garmin_attach(struct usb_serial *serial)
static void garmin_shutdown(struct usb_serial *serial)
{
struct usb_serial_port *port = serial->port[0];
struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
dbg("%s", __func__);
usb_kill_urb (port->interrupt_in_urb);
usb_kill_urb(port->interrupt_in_urb);
del_timer_sync(&garmin_data_p->timer);
kfree (garmin_data_p);
kfree(garmin_data_p);
usb_set_serial_port_data(port, NULL);
}
@ -1578,7 +1576,7 @@ static struct usb_serial_driver garmin_device = {
static int __init garmin_init (void)
static int __init garmin_init(void)
{
int retval;
@ -1598,10 +1596,10 @@ failed_garmin_register:
}
static void __exit garmin_exit (void)
static void __exit garmin_exit(void)
{
usb_deregister (&garmin_driver);
usb_serial_deregister (&garmin_device);
usb_deregister(&garmin_driver);
usb_serial_deregister(&garmin_device);
}
@ -1610,8 +1608,8 @@ static void __exit garmin_exit (void)
module_init(garmin_init);
module_exit(garmin_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IWUSR | S_IRUGO);