/*      $NetBSD: stuirda.c,v 1.20 2019/05/05 03:17:54 mrg Exp $ */

/*
* Copyright (c) 2001,2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson ([email protected]).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: stuirda.c,v 1.20 2019/05/05 03:17:54 mrg Exp $");

#ifdef _KERNEL_OPT
#include "opt_usb.h"
#endif

#include <sys/param.h>

#include <sys/device.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/poll.h>
#include <sys/select.h>
#include <sys/proc.h>


#include <dev/firmload.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>

#include <dev/ir/ir.h>
#include <dev/ir/irdaio.h>
#include <dev/ir/irframevar.h>

#include <dev/usb/uirdavar.h>

#ifdef UIRDA_DEBUG
#define DPRINTF(x)      if (stuirdadebug) printf x
#define DPRINTFN(n,x)   if (stuirdadebug>(n)) printf x
int     stuirdadebug = 1;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif

struct stuirda_softc {
       struct uirda_softc sc_uirda;
};

int stuirda_fwload(struct uirda_softc *sc);

/*
* These devices need firmware download.
*/
Static const struct usb_devno stuirda_devs[] = {
       { USB_VENDOR_SIGMATEL, USB_PRODUCT_SIGMATEL_SIR4116 },
       { USB_VENDOR_SIGMATEL, USB_PRODUCT_SIGMATEL_FIR4210 },
       { USB_VENDOR_SIGMATEL, USB_PRODUCT_SIGMATEL_VFIR4220 },
};
#define stuirda_lookup(v, p) (usb_lookup(stuirda_devs, v, p))

int stuirda_write(void *h, struct uio *uio, int flag);

struct irframe_methods stuirda_methods = {
       uirda_open, uirda_close, uirda_read, stuirda_write, uirda_poll,
       uirda_kqfilter, uirda_set_params, uirda_get_speeds,
       uirda_get_turnarounds
};

#define STUIRDA_HEADER_SIZE 3

#define stuirda_activate uirda_activate
#define stuirda_detach uirda_detach

int     stuirda_match(device_t, cfdata_t, void *);
void    stuirda_attach(device_t, device_t, void *);
int     stuirda_detach(device_t, int);
int     stuirda_activate(device_t, enum devact);

CFATTACH_DECL_NEW(stuirda, sizeof(struct stuirda_softc), stuirda_match,
   stuirda_attach, stuirda_detach, stuirda_activate);

int
stuirda_match(device_t parent, cfdata_t match, void *aux)
{
       struct usbif_attach_arg *uiaa = aux;

       DPRINTFN(50,("stuirda_match\n"));

       if (stuirda_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL)
               return UMATCH_VENDOR_PRODUCT;

       return UMATCH_NONE;
}

void uirda_attach(device_t, device_t, void *);

void
stuirda_attach(device_t parent, device_t self, void *aux)
{
       struct stuirda_softc *sc = device_private(self);

       sc->sc_uirda.sc_loadfw = stuirda_fwload;
       sc->sc_uirda.sc_irm = &stuirda_methods;
       sc->sc_uirda.sc_hdszi = STUIRDA_HEADER_SIZE;

       uirda_attach(parent,self,aux);
}

int
stuirda_fwload(struct uirda_softc *sc)
{


       int rc;
       firmware_handle_t fh;
       off_t fwsize;
       usb_device_descriptor_t usbddsc;
       struct usbd_xfer *      fwxfer;
       struct usbd_pipe *      fwpipe;
       usbd_status status;
       usb_device_request_t req;
       char *buffer;
       char *p;
       char fwname[12];
       int n;
       uint8_t *usbbuf;
       /* size_t bsize; */

       printf("%s: needing to download firmware\n",
               device_xname(sc->sc_dev));

       status = usbd_get_device_desc(sc->sc_udev, &usbddsc);
       if (status) {
               printf("%s: can't get device descriptor, status %d\n",
                   device_xname(sc->sc_dev), status);
               return status;
       }

       rc = usbd_get_class_desc(sc->sc_udev, UDESC_IRDA, 0,
               USB_IRDA_DESCRIPTOR_SIZE, &sc->sc_irdadesc);
       printf("error %d reading class desc\n", rc);

       snprintf(fwname, sizeof(fwname), "4210%02x%02x.sb",
               usbddsc.bcdDevice[1],
               usbddsc.bcdDevice[0]);

       printf("%s: Attempting to load firmware %s\n",
               device_xname(sc->sc_dev), fwname);

       rc = firmware_open("stuirda", fwname, &fh);

       if (rc) {
               printf("%s: Cannot load firmware\n",
                       device_xname(sc->sc_dev));
               return rc;
       }
       fwsize = firmware_get_size(fh);

       printf("%s: Firmware size %lld\n",
               device_xname(sc->sc_dev), (long long)fwsize);

       buffer = firmware_malloc(fwsize);
       if (buffer == NULL) {
               printf("%s: Cannot load firmware: out of memory\n",
                       device_xname(sc->sc_dev));
               goto giveup2;
       }

       rc = firmware_read(fh, 0, buffer, (size_t)fwsize);

       if (rc) {
               printf("%s: Cannot read firmware\n", device_xname(sc->sc_dev));
               goto giveup3;
       }

       for (p = buffer + sizeof("Product Version:");
           p < buffer + fwsize - 5; p++) {

               if (0x1A == *p)
                       break;
       }
       if (0x1a != *p || memcmp(p+1, "STMP", 4) != 0) {
               /* firmware bad */
               printf("%s: Bad firmware\n", device_xname(sc->sc_dev));
               goto giveup3;
       }

       p += 5;

       req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
       req.bRequest = 2 /* XXX magic */;
       USETW(req.wValue, 0);
       USETW(req.wIndex, 0);
       USETW(req.wLength, 0);
       rc = usbd_do_request(sc->sc_udev, &req, 0);
       if (rc) {
               printf("%s: Cannot switch to f/w d/l mode, error %d\n",
                       device_xname(sc->sc_dev), rc);
               goto giveup3;
       }

       delay(100000);

       rc = usbd_open_pipe(sc->sc_iface, sc->sc_wr_addr, 0, &fwpipe);
       if (rc) {
               printf("%s: Cannot open pipe, rc=%d\n",
                   device_xname(sc->sc_dev), rc);
               goto giveup3;
       }

       int err = usbd_create_xfer(fwpipe, 1024, USBD_FORCE_SHORT_XFER, 0,
           &fwxfer);
       if (err) {
               printf("%s: Cannot alloc xfer\n", device_xname(sc->sc_dev));
               goto giveup4;
       }
       usbbuf = usbd_get_buffer(fwxfer);
       n = (buffer + fwsize - p);
       while (n > 0) {
               if (n > 1023)
                       n = 1023;
               memcpy(usbbuf, p, n);
               rc = usbd_bulk_transfer(fwxfer, fwpipe, USBD_FORCE_SHORT_XFER,
                   5000, usbbuf, &n);
               printf("%s: write: rc=%d, %d left\n",
                   device_xname(sc->sc_dev), rc, n);
               if (rc) {
                       printf("%s: write: rc=%d, %d bytes written\n",
                           device_xname(sc->sc_dev), rc, n);
                       goto giveup4;
               }
               printf("%s: written %d\n", device_xname(sc->sc_dev), n);
               p += n;
               n = (buffer + fwsize - p);
       }
       delay(100000);
       /* TODO: more code here */
       rc = 0;
       usbd_destroy_xfer(fwxfer);

       giveup4: usbd_close_pipe(fwpipe);
       giveup3: firmware_free(buffer, fwsize);
       giveup2: firmware_close(fh);

       return rc;

}

int
stuirda_write(void *h, struct uio *uio, int flag)
{
       struct uirda_softc *sc = h;
       usbd_status err;
       uint32_t n;
       int error = 0;

       DPRINTFN(1,("%s: sc=%p\n", __func__, sc));

       if (sc->sc_dying)
               return EIO;

#ifdef DIAGNOSTIC
       if (sc->sc_wr_buf == NULL)
               return EINVAL;
#endif

       n = uio->uio_resid;
       if (n > sc->sc_params.maxsize)
               return EINVAL;

       sc->sc_refcnt++;
       mutex_enter(&sc->sc_wr_buf_lk);

       sc->sc_wr_buf[0] = UIRDA_EB_NO_CHANGE | UIRDA_NO_SPEED;

       sc->sc_wr_buf[1] = 0;
       sc->sc_wr_buf[2] = 7; /* XXX turnaround - maximum for now */
       if ((n > 0 && (n % 128) == 0 && (n % 512) != 0)) {
               sc->sc_wr_buf[1] = 1;
       }

       error = uiomove(sc->sc_wr_buf + STUIRDA_HEADER_SIZE, n, uio);
       if (error)
               goto done;

       DPRINTFN(1, ("uirdawrite: transfer %d bytes\n", n));

       n += STUIRDA_HEADER_SIZE + sc->sc_wr_buf[1];

       err = usbd_bulk_transfer(sc->sc_wr_xfer, sc->sc_wr_pipe,
           USBD_FORCE_SHORT_XFER, UIRDA_WR_TIMEOUT, sc->sc_wr_buf, &n);
       DPRINTFN(2, ("uirdawrite: err=%d\n", err));
       if (err) {
               if (err == USBD_INTERRUPTED)
                       error = EINTR;
               else if (err == USBD_TIMEOUT)
                       error = ETIMEDOUT;
               else
                       error = EIO;
       }
done:
       mutex_exit(&sc->sc_wr_buf_lk);
       if (--sc->sc_refcnt < 0)
               usb_detach_wakeupold(sc->sc_dev);

       DPRINTFN(1,("%s: sc=%p done\n", __func__, sc));
       return error;
}

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