From cf55ed64bbf7e7fea836434378d1590f667ff21f Mon Sep 17 00:00:00 2001 From: Michael Gernoth Date: Thu, 10 Apr 2008 22:10:15 +0200 Subject: [PATCH] make it possible to share the USB and parallel cable between applications --- parport.c | 12 ++++++--- usb-driver.c | 69 ++++++++++++++++++++++++++++++++-------------------- 2 files changed, 52 insertions(+), 29 deletions(-) diff --git a/parport.c b/parport.c index 57ab083..b32b6e2 100644 --- a/parport.c +++ b/parport.c @@ -20,6 +20,12 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, unsigned char val; static unsigned char last_pp_write = 0; + if (parportfd < 0) + return ret; + + if (ioctl(parportfd, PPCLAIM) == -1) + return -1; + for (i = 0; i < num; i++) { DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n", (unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes, @@ -33,9 +39,6 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, DPRINTF("write byte: %d\n", val); #endif - if (parportfd < 0) - return ret; - if (port == ppbase + PP_DATA) { DPRINTF("data port\n"); switch(tr[i].cmdTrans) { @@ -114,6 +117,8 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, #endif } + ioctl(parportfd, PPRELEASE); + return ret; } @@ -139,6 +144,7 @@ int parport_open(int num) { if (ioctl(parportfd, PPNEGOT, &pmode) == -1) return -1; + ioctl(parportfd, PPRELEASE); #if 0 if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr) { DPRINTF("ECP mode requested\n"); diff --git a/usb-driver.c b/usb-driver.c index 6320b9f..a0524bf 100644 --- a/usb-driver.c +++ b/usb-driver.c @@ -57,6 +57,7 @@ static struct usb_bus *busses = NULL; static struct usb_device *usbdevice; static usb_dev_handle *usb_devhandle = NULL; static int usbinterface = -1; +static int usbalternate = -1; static unsigned long card_type; static int ints_enabled = 0; static pthread_mutex_t int_wait = PTHREAD_MUTEX_INITIALIZER; @@ -234,6 +235,39 @@ static int usb_deviceinfo(unsigned char *buf) { return len; } +static int usb_claim(int claim) { + int ret = 0; + static int claimed = 0; + + if (usbinterface < 0) + return -1; + + if (claim) { + if (claimed) + return 0; + + ret = usb_claim_interface(usb_devhandle, usbinterface); + if (!ret) { + claimed = 1; + ret = usb_set_altinterface(usb_devhandle, usbalternate); + if (ret) + fprintf(stderr, "usb_set_altinterface: %d\n", ret); + } else { + fprintf(stderr, "usb_claim_interface: %d -> %d (%s)\n", + usbinterface, ret, usb_strerror()); + } + } else { + if (!claimed) + return 0; + + ret = usb_release_interface(usb_devhandle, usbinterface); + if (!ret) + claimed = 0; + } + + return ret; +} + static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { struct header_struct* wdheader = (struct header_struct*)wdioctl; struct version_struct *version; @@ -307,8 +341,10 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { DPRINTF(" unique: %lu, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n", ut->dwUniqueID, ut->dwPipeNum, ut->fRead, ut->dwOptions, ut->dwBufferSize, ut->dwTimeout); - DPRINTF("setup packet: "); - hexdump(ut->SetupPacket, 8); + if (ut->dwPipeNum == 0) { + DPRINTF("setup packet: "); + hexdump(ut->SetupPacket, 8); + } if (!ut->fRead && ut->dwBufferSize) { @@ -319,6 +355,7 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { #ifndef NO_WINDRVR ret = (*ioctl_func) (fd, request, wdioctl); #else + usb_claim(1); /* http://www.jungo.com/support/documentation/windriver/802/wdusb_man_mhtml/node55.html#SECTION001213000000000000000 */ if (ut->dwPipeNum == 0) { /* control pipe */ int requesttype, request, value, index, size; @@ -332,10 +369,10 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { } else { if (ut->fRead) { ret = usb_bulk_read(usb_devhandle, ut->dwPipeNum, ut->pBuffer, ut->dwBufferSize, ut->dwTimeout); - } else { ret = usb_bulk_write(usb_devhandle, ut->dwPipeNum, ut->pBuffer, ut->dwBufferSize, ut->dwTimeout); } + usb_claim(0); } if (ret < 0) { @@ -416,22 +453,8 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { if (!usb_devhandle) usb_devhandle = usb_open(usbdevice); - /* FIXME: Select right interface! */ - ret = usb_claim_interface(usb_devhandle, usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber); - if (!ret) { - if(!ret) { - usbinterface = usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber; - ret = usb_set_altinterface(usb_devhandle, usi->dwAlternateSetting); - if (ret) - fprintf(stderr, "usb_set_altinterface: %d\n", ret); - } else { - fprintf(stderr, "usb_set_configuration: %d (%s)\n", ret, usb_strerror()); - } - } else { - fprintf(stderr, "usb_claim_interface: %d -> %d (%s)\n", - usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber, - ret, usb_strerror()); - } + usbinterface = usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber; + usbalternate = usi->dwAlternateSetting; } #endif DPRINTF("unique: %lu, interfacenum: %lu, alternatesetting: %lu, options: %lx\n", @@ -827,15 +850,9 @@ int close(int fd) { if (fd == windrvrfd && windrvrfd >= 0) { DPRINTF("close windrvrfd\n"); - if (usbinterface >= 0) - usb_release_interface(usb_devhandle, usbinterface); - if (usb_devhandle) { -#ifndef NO_USB_RESET - usb_reset(usb_devhandle); -#endif + if (usb_devhandle) usb_close(usb_devhandle); - } usb_devhandle = NULL; usbinterface = -1; -- 2.39.5