/* $OpenBSD: udl.c,v 1.81 2014/12/09 07:05:06 doug Exp $ */ /*- * Copyright (c) 2015 Hans Petter Selasky * Copyright (c) 2009 Marcus Glocker * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Driver for the "DisplayLink DL-120 / DL-160" graphic chips based on * the reversed engineered specifications of Florian Echtler * : * * http://floe.butterbrot.org/displaylink/doku.php */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #include #include "fb_if.h" #undef DPRINTF #undef DPRINTFN #define USB_DEBUG_VAR udl_debug #include static SYSCTL_NODE(_hw_usb, OID_AUTO, udl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "USB UDL"); #ifdef USB_DEBUG static int udl_debug = 0; SYSCTL_INT(_hw_usb_udl, OID_AUTO, debug, CTLFLAG_RWTUN, &udl_debug, 0, "Debug level"); #endif #define UDL_FPS_MAX 60 #define UDL_FPS_MIN 1 static int udl_fps = 25; SYSCTL_INT(_hw_usb_udl, OID_AUTO, fps, CTLFLAG_RWTUN, &udl_fps, 0, "Frames Per Second, 1-60"); static struct mtx udl_buffer_mtx; static struct udl_buffer_head udl_buffer_head; MALLOC_DEFINE(M_USB_DL, "USB", "USB DisplayLink"); /* * Prototypes. */ static usb_callback_t udl_bulk_write_callback; static device_probe_t udl_probe; static device_attach_t udl_attach; static device_detach_t udl_detach; static fb_getinfo_t udl_fb_getinfo; static fb_setblankmode_t udl_fb_setblankmode; static void udl_select_chip(struct udl_softc *, struct usb_attach_arg *); static int udl_init_chip(struct udl_softc *); static void udl_select_mode(struct udl_softc *); static int udl_init_resolution(struct udl_softc *); static void udl_fbmem_alloc(struct udl_softc *); static int udl_cmd_write_buf_le16(struct udl_softc *, const uint8_t *, uint32_t, uint8_t, int); static int udl_cmd_buf_copy_le16(struct udl_softc *, uint32_t, uint32_t, uint8_t, int); static void udl_cmd_insert_int_1(struct udl_cmd_buf *, uint8_t); static void udl_cmd_insert_int_3(struct udl_cmd_buf *, uint32_t); static void udl_cmd_insert_buf_le16(struct udl_cmd_buf *, const uint8_t *, uint32_t); static void udl_cmd_write_reg_1(struct udl_cmd_buf *, uint8_t, uint8_t); static void udl_cmd_write_reg_3(struct udl_cmd_buf *, uint8_t, uint32_t); static int udl_power_save(struct udl_softc *, int, int); static const struct usb_config udl_config[UDL_N_TRANSFER] = { [UDL_BULK_WRITE_0] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_TX, .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, .callback = &udl_bulk_write_callback, .frames = UDL_CMD_MAX_FRAMES, .timeout = 5000, /* 5 seconds */ }, [UDL_BULK_WRITE_1] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_TX, .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, .callback = &udl_bulk_write_callback, .frames = UDL_CMD_MAX_FRAMES, .timeout = 5000, /* 5 seconds */ }, }; /* * Driver glue. */ static devclass_t udl_devclass; static device_method_t udl_methods[] = { DEVMETHOD(device_probe, udl_probe), DEVMETHOD(device_attach, udl_attach), DEVMETHOD(device_detach, udl_detach), DEVMETHOD(fb_getinfo, udl_fb_getinfo), DEVMETHOD_END }; static driver_t udl_driver = { .name = "udl", .methods = udl_methods, .size = sizeof(struct udl_softc), }; DRIVER_MODULE(udl, uhub, udl_driver, udl_devclass, NULL, NULL); MODULE_DEPEND(udl, usb, 1, 1, 1); MODULE_DEPEND(udl, fbd, 1, 1, 1); MODULE_DEPEND(udl, videomode, 1, 1, 1); MODULE_VERSION(udl, 1); /* * Matching devices. */ static const STRUCT_USB_HOST_ID udl_devs[] = { {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD4300U, DL120)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000U, DL120)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GUC2020, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD220, DL165)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VCUD60, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DLDVI, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VGA10, DL120)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_WSDVI, DLUNK)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_EC008, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_HPDOCK, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NL571, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_M01061, DL195)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NBDOCK, DL165)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SWDVI, DLUNK)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0, DL120)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_CONV, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE, DL160)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LUM70, DL125)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_POLARIS2, DLUNK)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421, DLUNK)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_ITEC, DL165)}, {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DVI_19, DL165)}, }; static void udl_buffer_init(void *arg) { mtx_init(&udl_buffer_mtx, "USB", "UDL", MTX_DEF); TAILQ_INIT(&udl_buffer_head); } SYSINIT(udl_buffer_init, SI_SUB_LOCK, SI_ORDER_FIRST, udl_buffer_init, NULL); CTASSERT(sizeof(struct udl_buffer) < PAGE_SIZE); static void * udl_buffer_alloc(uint32_t size) { struct udl_buffer *buf; mtx_lock(&udl_buffer_mtx); TAILQ_FOREACH(buf, &udl_buffer_head, entry) { if (buf->size == size) { TAILQ_REMOVE(&udl_buffer_head, buf, entry); break; } } mtx_unlock(&udl_buffer_mtx); if (buf != NULL) { uint8_t *ptr = ((uint8_t *)buf) - size; /* wipe and recycle buffer */ memset(ptr, 0, size); /* return buffer pointer */ return (ptr); } /* allocate new buffer */ return (malloc(size + sizeof(*buf), M_USB_DL, M_WAITOK | M_ZERO)); } static void udl_buffer_free(void *_buf, uint32_t size) { struct udl_buffer *buf; /* check for NULL pointer */ if (_buf == NULL) return; /* compute pointer to recycle list */ buf = (struct udl_buffer *)(((uint8_t *)_buf) + size); /* * Memory mapped buffers should never be freed. * Put display buffer into a recycle list. */ mtx_lock(&udl_buffer_mtx); buf->size = size; TAILQ_INSERT_TAIL(&udl_buffer_head, buf, entry); mtx_unlock(&udl_buffer_mtx); } static uint32_t udl_get_fb_size(struct udl_softc *sc) { unsigned i = sc->sc_cur_mode; return ((uint32_t)udl_modes[i].hdisplay * (uint32_t)udl_modes[i].vdisplay * 2); } static uint32_t udl_get_fb_width(struct udl_softc *sc) { unsigned i = sc->sc_cur_mode; return (udl_modes[i].hdisplay); } static uint32_t udl_get_fb_height(struct udl_softc *sc) { unsigned i = sc->sc_cur_mode; return (udl_modes[i].vdisplay); } static uint32_t udl_get_fb_hz(struct udl_softc *sc) { unsigned i = sc->sc_cur_mode; return (udl_modes[i].hz); } static void udl_callout(void *arg) { struct udl_softc *sc = arg; const uint32_t max = udl_get_fb_size(sc); int fps; if (sc->sc_power_save == 0) { fps = udl_fps; /* figure out number of frames per second */ if (fps < UDL_FPS_MIN) fps = UDL_FPS_MIN; else if (fps > UDL_FPS_MAX) fps = UDL_FPS_MAX; if (sc->sc_sync_off >= max) sc->sc_sync_off = 0; usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); } else { fps = 1; } callout_reset(&sc->sc_callout, hz / fps, &udl_callout, sc); } static int udl_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); if (uaa->usb_mode != USB_MODE_HOST) return (ENXIO); if (uaa->info.bConfigIndex != 0) return (ENXIO); if (uaa->info.bIfaceIndex != 0) return (ENXIO); return (usbd_lookup_id_by_uaa(udl_devs, sizeof(udl_devs), uaa)); } static int udl_attach(device_t dev) { struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); struct sysctl_oid *tree = device_get_sysctl_tree(dev); struct udl_softc *sc = device_get_softc(dev); struct usb_attach_arg *uaa = device_get_ivars(dev); int error; int i; device_set_usb_desc(dev); mtx_init(&sc->sc_mtx, "UDL lock", NULL, MTX_DEF); cv_init(&sc->sc_cv, "UDLCV"); callout_init_mtx(&sc->sc_callout, &sc->sc_mtx, 0); sc->sc_udev = uaa->device; error = usbd_transfer_setup(uaa->device, &uaa->info.bIfaceIndex, sc->sc_xfer, udl_config, UDL_N_TRANSFER, sc, &sc->sc_mtx); if (error) { DPRINTF("usbd_transfer_setup error=%s\n", usbd_errstr(error)); goto detach; } usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_0], &sc->sc_xfer_head[0]); usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_1], &sc->sc_xfer_head[1]); TAILQ_INIT(&sc->sc_xfer_head[0]); TAILQ_INIT(&sc->sc_xfer_head[1]); TAILQ_INIT(&sc->sc_cmd_buf_free); TAILQ_INIT(&sc->sc_cmd_buf_pending); sc->sc_def_chip = -1; sc->sc_chip = USB_GET_DRIVER_INFO(uaa); sc->sc_def_mode = -1; sc->sc_cur_mode = UDL_MAX_MODES; /* Allow chip ID to be overwritten */ SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid_force", CTLFLAG_RWTUN, &sc->sc_def_chip, 0, "chip ID"); /* Export current chip ID */ SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid", CTLFLAG_RD, &sc->sc_chip, 0, "chip ID"); if (sc->sc_def_chip > -1 && sc->sc_def_chip <= DLMAX) { device_printf(dev, "Forcing chip ID to 0x%04x\n", sc->sc_def_chip); sc->sc_chip = sc->sc_def_chip; } /* * The product might have more than one chip */ if (sc->sc_chip == DLUNK) udl_select_chip(sc, uaa); for (i = 0; i != UDL_CMD_MAX_BUFFERS; i++) { struct udl_cmd_buf *cb = &sc->sc_cmd_buf_temp[i]; TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); } /* * Initialize chip. */ error = udl_init_chip(sc); if (error != USB_ERR_NORMAL_COMPLETION) goto detach; /* * Select edid mode. */ udl_select_mode(sc); /* Allow default mode to be overwritten */ SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode_force", CTLFLAG_RWTUN, &sc->sc_def_mode, 0, "mode"); /* Export current mode */ SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode", CTLFLAG_RD, &sc->sc_cur_mode, 0, "mode"); i = sc->sc_def_mode; if (i > -1 && i < UDL_MAX_MODES) { if (udl_modes[i].chip <= sc->sc_chip) { device_printf(dev, "Forcing mode to %d\n", i); sc->sc_cur_mode = i; } } /* Printout current mode */ device_printf(dev, "Mode selected %dx%d @ %dHz\n", (int)udl_get_fb_width(sc), (int)udl_get_fb_height(sc), (int)udl_get_fb_hz(sc)); udl_init_resolution(sc); /* Allocate frame buffer */ udl_fbmem_alloc(sc); UDL_LOCK(sc); udl_callout(sc); UDL_UNLOCK(sc); sc->sc_fb_info.fb_name = device_get_nameunit(dev); sc->sc_fb_info.fb_size = sc->sc_fb_size; sc->sc_fb_info.fb_bpp = 16; sc->sc_fb_info.fb_depth = 16; sc->sc_fb_info.fb_width = udl_get_fb_width(sc); sc->sc_fb_info.fb_height = udl_get_fb_height(sc); sc->sc_fb_info.fb_stride = sc->sc_fb_info.fb_width * 2; sc->sc_fb_info.fb_pbase = 0; sc->sc_fb_info.fb_vbase = (uintptr_t)sc->sc_fb_addr; sc->sc_fb_info.fb_priv = sc; sc->sc_fb_info.setblankmode = &udl_fb_setblankmode; sc->sc_fbdev = device_add_child(dev, "fbd", -1); if (sc->sc_fbdev == NULL) goto detach; if (device_probe_and_attach(sc->sc_fbdev) != 0) goto detach; return (0); detach: udl_detach(dev); return (ENXIO); } static int udl_detach(device_t dev) { struct udl_softc *sc = device_get_softc(dev); /* delete all child devices */ device_delete_children(dev); UDL_LOCK(sc); sc->sc_gone = 1; callout_stop(&sc->sc_callout); UDL_UNLOCK(sc); usbd_transfer_unsetup(sc->sc_xfer, UDL_N_TRANSFER); callout_drain(&sc->sc_callout); mtx_destroy(&sc->sc_mtx); cv_destroy(&sc->sc_cv); /* put main framebuffer into a recycle list, if any */ udl_buffer_free(sc->sc_fb_addr, sc->sc_fb_size); /* free shadow framebuffer memory, if any */ free(sc->sc_fb_copy, M_USB_DL); return (0); } static struct fb_info * udl_fb_getinfo(device_t dev) { struct udl_softc *sc = device_get_softc(dev); return (&sc->sc_fb_info); } static int udl_fb_setblankmode(void *arg, int mode) { struct udl_softc *sc = arg; switch (mode) { case V_DISPLAY_ON: udl_power_save(sc, 1, M_WAITOK); break; case V_DISPLAY_BLANK: udl_power_save(sc, 1, M_WAITOK); if (sc->sc_fb_addr != 0) { const uint32_t max = udl_get_fb_size(sc); memset((void *)sc->sc_fb_addr, 0, max); } break; case V_DISPLAY_STAND_BY: case V_DISPLAY_SUSPEND: udl_power_save(sc, 0, M_WAITOK); break; } return (0); } static struct udl_cmd_buf * udl_cmd_buf_alloc_locked(struct udl_softc *sc, int flags) { struct udl_cmd_buf *cb; while ((cb = TAILQ_FIRST(&sc->sc_cmd_buf_free)) == NULL) { if (flags != M_WAITOK) break; cv_wait(&sc->sc_cv, &sc->sc_mtx); } if (cb != NULL) { TAILQ_REMOVE(&sc->sc_cmd_buf_free, cb, entry); cb->off = 0; } return (cb); } static struct udl_cmd_buf * udl_cmd_buf_alloc(struct udl_softc *sc, int flags) { struct udl_cmd_buf *cb; UDL_LOCK(sc); cb = udl_cmd_buf_alloc_locked(sc, flags); UDL_UNLOCK(sc); return (cb); } static void udl_cmd_buf_send(struct udl_softc *sc, struct udl_cmd_buf *cb) { UDL_LOCK(sc); if (sc->sc_gone) { TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); } else { /* mark end of command stack */ udl_cmd_insert_int_1(cb, UDL_BULK_SOC); udl_cmd_insert_int_1(cb, UDL_BULK_CMD_EOC); TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_pending, cb, entry); usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); } UDL_UNLOCK(sc); } static struct udl_cmd_buf * udl_fb_synchronize_locked(struct udl_softc *sc) { const uint32_t max = udl_get_fb_size(sc); /* check if framebuffer is not ready */ if (sc->sc_fb_addr == NULL || sc->sc_fb_copy == NULL) return (NULL); while (sc->sc_sync_off < max) { uint32_t delta = max - sc->sc_sync_off; if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) delta = UDL_CMD_MAX_PIXEL_COUNT * 2; if (bcmp(sc->sc_fb_addr + sc->sc_sync_off, sc->sc_fb_copy + sc->sc_sync_off, delta) != 0) { struct udl_cmd_buf *cb; cb = udl_cmd_buf_alloc_locked(sc, M_NOWAIT); if (cb == NULL) goto done; memcpy(sc->sc_fb_copy + sc->sc_sync_off, sc->sc_fb_addr + sc->sc_sync_off, delta); udl_cmd_insert_int_1(cb, UDL_BULK_SOC); udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); udl_cmd_insert_int_3(cb, sc->sc_sync_off); udl_cmd_insert_int_1(cb, delta / 2); udl_cmd_insert_buf_le16(cb, sc->sc_fb_copy + sc->sc_sync_off, delta); sc->sc_sync_off += delta; return (cb); } else { sc->sc_sync_off += delta; } } done: return (NULL); } static void udl_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) { struct udl_softc *sc = usbd_xfer_softc(xfer); struct udl_cmd_head *phead = usbd_xfer_get_priv(xfer); struct udl_cmd_buf *cb; unsigned i; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); case USB_ST_SETUP: tr_setup: for (i = 0; i != UDL_CMD_MAX_FRAMES; i++) { cb = TAILQ_FIRST(&sc->sc_cmd_buf_pending); if (cb == NULL) { cb = udl_fb_synchronize_locked(sc); if (cb == NULL) break; } else { TAILQ_REMOVE(&sc->sc_cmd_buf_pending, cb, entry); } TAILQ_INSERT_TAIL(phead, cb, entry); usbd_xfer_set_frame_data(xfer, i, cb->buf, cb->off); } if (i != 0) { usbd_xfer_set_frames(xfer, i); usbd_transfer_submit(xfer); } break; default: TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); if (error != USB_ERR_CANCELLED) { /* try clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } break; } /* wakeup any waiters */ cv_signal(&sc->sc_cv); } static int udl_power_save(struct udl_softc *sc, int on, int flags) { struct udl_cmd_buf *cb; /* get new buffer */ cb = udl_cmd_buf_alloc(sc, flags); if (cb == NULL) return (EAGAIN); DPRINTF("screen %s\n", on ? "ON" : "OFF"); sc->sc_power_save = on ? 0 : 1; if (on) udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); else udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_OFF); udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); udl_cmd_buf_send(sc, cb); return (0); } static int udl_ctrl_msg(struct udl_softc *sc, uint8_t rt, uint8_t r, uint16_t index, uint16_t value, uint8_t *buf, size_t len) { usb_device_request_t req; int error; req.bmRequestType = rt; req.bRequest = r; USETW(req.wIndex, index); USETW(req.wValue, value); USETW(req.wLength, len); error = usbd_do_request_flags(sc->sc_udev, NULL, &req, buf, 0, NULL, USB_DEFAULT_TIMEOUT); DPRINTF("%s\n", usbd_errstr(error)); return (error); } static int udl_poll(struct udl_softc *sc, uint32_t *buf) { uint32_t lbuf; int error; error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_POLL, 0x0000, 0x0000, (uint8_t *)&lbuf, sizeof(lbuf)); if (error == USB_ERR_NORMAL_COMPLETION) *buf = le32toh(lbuf); return (error); } static int udl_read_1(struct udl_softc *sc, uint16_t addr, uint8_t *buf) { uint8_t lbuf[1]; int error; error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_1, addr, 0x0000, lbuf, 1); if (error == USB_ERR_NORMAL_COMPLETION) *buf = *(uint8_t *)lbuf; return (error); } static int udl_write_1(struct udl_softc *sc, uint16_t addr, uint8_t buf) { int error; error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_WRITE_1, addr, 0x0000, &buf, 1); return (error); } static int udl_read_edid(struct udl_softc *sc, uint8_t *buf) { uint8_t lbuf[64]; uint16_t offset; int error; offset = 0; error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); if (error != USB_ERR_NORMAL_COMPLETION) goto fail; bcopy(lbuf + 1, buf + offset, 63); offset += 63; error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); if (error != USB_ERR_NORMAL_COMPLETION) goto fail; bcopy(lbuf + 1, buf + offset, 63); offset += 63; error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 3); if (error != USB_ERR_NORMAL_COMPLETION) goto fail; bcopy(lbuf + 1, buf + offset, 2); fail: return (error); } static uint8_t udl_lookup_mode(uint16_t hdisplay, uint16_t vdisplay, uint8_t hz, uint16_t chip, uint32_t clock) { uint8_t idx; /* * Check first if we have a matching mode with pixelclock */ for (idx = 0; idx != UDL_MAX_MODES; idx++) { if ((udl_modes[idx].hdisplay == hdisplay) && (udl_modes[idx].vdisplay == vdisplay) && (udl_modes[idx].clock == clock) && (udl_modes[idx].chip <= chip)) { return (idx); } } /* * If not, check for matching mode with update frequency */ for (idx = 0; idx != UDL_MAX_MODES; idx++) { if ((udl_modes[idx].hdisplay == hdisplay) && (udl_modes[idx].vdisplay == vdisplay) && (udl_modes[idx].hz == hz) && (udl_modes[idx].chip <= chip)) { return (idx); } } return (idx); } static void udl_select_chip(struct udl_softc *sc, struct usb_attach_arg *uaa) { const char *pserial; pserial = usb_get_serial(uaa->device); sc->sc_chip = DL120; if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_WSDVI)) { /* * WS Tech DVI is DL120 or DL160. All deviced uses the * same revision (0.04) so iSerialNumber must be used * to determine which chip it is. */ if (strlen(pserial) > 7) { if (strncmp(pserial, "0198-13", 7) == 0) sc->sc_chip = DL160; } DPRINTF("iSerialNumber (%s) used to select chip (%d)\n", pserial, sc->sc_chip); } if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_SWDVI)) { /* * SUNWEIT DVI is DL160, DL125, DL165 or DL195. Major revision * can be used to differ between DL1x0 and DL1x5. Minor to * differ between DL1x5. iSerialNumber seems not to be uniqe. */ sc->sc_chip = DL160; if (uaa->info.bcdDevice >= 0x100) { sc->sc_chip = DL165; if (uaa->info.bcdDevice == 0x104) sc->sc_chip = DL195; if (uaa->info.bcdDevice == 0x108) sc->sc_chip = DL125; } DPRINTF("bcdDevice (%02x) used to select chip (%d)\n", uaa->info.bcdDevice, sc->sc_chip); } } static int udl_set_enc_key(struct udl_softc *sc, uint8_t *buf, uint8_t len) { int error; error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_SET_KEY, 0x0000, 0x0000, buf, len); return (error); } static void udl_fbmem_alloc(struct udl_softc *sc) { uint32_t size; size = udl_get_fb_size(sc); size = round_page(size); /* check for zero size */ if (size == 0) size = PAGE_SIZE; /* * It is assumed that allocations above PAGE_SIZE bytes will * be PAGE_SIZE aligned for use with mmap() */ sc->sc_fb_addr = udl_buffer_alloc(size); sc->sc_fb_copy = malloc(size, M_USB_DL, M_WAITOK | M_ZERO); sc->sc_fb_size = size; } static void udl_cmd_insert_int_1(struct udl_cmd_buf *cb, uint8_t value) { cb->buf[cb->off] = value; cb->off += 1; } #if 0 static void udl_cmd_insert_int_2(struct udl_cmd_buf *cb, uint16_t value) { uint16_t lvalue; lvalue = htobe16(value); bcopy(&lvalue, cb->buf + cb->off, 2); cb->off += 2; } #endif static void udl_cmd_insert_int_3(struct udl_cmd_buf *cb, uint32_t value) { uint32_t lvalue; #if BYTE_ORDER == BIG_ENDIAN lvalue = htobe32(value) << 8; #else lvalue = htobe32(value) >> 8; #endif bcopy(&lvalue, cb->buf + cb->off, 3); cb->off += 3; } #if 0 static void udl_cmd_insert_int_4(struct udl_cmd_buf *cb, uint32_t value) { uint32_t lvalue; lvalue = htobe32(value); bcopy(&lvalue, cb->buf + cb->off, 4); cb->off += 4; } #endif static void udl_cmd_insert_buf_le16(struct udl_cmd_buf *cb, const uint8_t *buf, uint32_t len) { uint32_t x; for (x = 0; x != len; x += 2) { /* byte swap from little endian to big endian */ cb->buf[cb->off + x + 0] = buf[x + 1]; cb->buf[cb->off + x + 1] = buf[x + 0]; } cb->off += len; } static void udl_cmd_write_reg_1(struct udl_cmd_buf *cb, uint8_t reg, uint8_t val) { udl_cmd_insert_int_1(cb, UDL_BULK_SOC); udl_cmd_insert_int_1(cb, UDL_BULK_CMD_REG_WRITE_1); udl_cmd_insert_int_1(cb, reg); udl_cmd_insert_int_1(cb, val); } static void udl_cmd_write_reg_3(struct udl_cmd_buf *cb, uint8_t reg, uint32_t val) { udl_cmd_write_reg_1(cb, reg + 0, (val >> 16) & 0xff); udl_cmd_write_reg_1(cb, reg + 1, (val >> 8) & 0xff); udl_cmd_write_reg_1(cb, reg + 2, (val >> 0) & 0xff); } static int udl_init_chip(struct udl_softc *sc) { uint32_t ui32; uint8_t ui8; int error; error = udl_poll(sc, &ui32); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("poll=0x%08x\n", ui32); /* Some products may use later chip too */ switch (ui32 & 0xff) { case 0xf1: /* DL1x5 */ switch (sc->sc_chip) { case DL120: sc->sc_chip = DL125; break; case DL160: sc->sc_chip = DL165; break; } break; } DPRINTF("chip 0x%04x\n", sc->sc_chip); error = udl_read_1(sc, 0xc484, &ui8); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("read 0x%02x from 0xc484\n", ui8); error = udl_write_1(sc, 0xc41f, 0x01); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("write 0x01 to 0xc41f\n"); error = udl_read_edid(sc, sc->sc_edid); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("read EDID\n"); error = udl_set_enc_key(sc, __DECONST(void *, udl_null_key_1), sizeof(udl_null_key_1)); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("set encryption key\n"); error = udl_write_1(sc, 0xc40b, 0x00); if (error != USB_ERR_NORMAL_COMPLETION) return (error); DPRINTF("write 0x00 to 0xc40b\n"); return (USB_ERR_NORMAL_COMPLETION); } static void udl_init_fb_offsets(struct udl_cmd_buf *cb, uint32_t start16, uint32_t stride16, uint32_t start8, uint32_t stride8) { udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START16, start16); udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE16, stride16); udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START8, start8); udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE8, stride8); udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); } static int udl_init_resolution(struct udl_softc *sc) { const uint32_t max = udl_get_fb_size(sc); const uint8_t *buf = udl_modes[sc->sc_cur_mode].mode; struct udl_cmd_buf *cb; uint32_t delta; uint32_t i; int error; /* get new buffer */ cb = udl_cmd_buf_alloc(sc, M_WAITOK); if (cb == NULL) return (EAGAIN); /* write resolution values and set video memory offsets */ udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); for (i = 0; i < UDL_MODE_SIZE; i++) udl_cmd_write_reg_1(cb, i, buf[i]); udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); udl_init_fb_offsets(cb, 0x000000, 0x000a00, 0x555555, 0x000500); udl_cmd_buf_send(sc, cb); /* fill screen with black color */ for (i = 0; i < max; i += delta) { static const uint8_t udl_black[UDL_CMD_MAX_PIXEL_COUNT * 2] __aligned(4); delta = max - i; if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) delta = UDL_CMD_MAX_PIXEL_COUNT * 2; if (i == 0) error = udl_cmd_write_buf_le16(sc, udl_black, i, delta / 2, M_WAITOK); else error = udl_cmd_buf_copy_le16(sc, 0, i, delta / 2, M_WAITOK); if (error) return (error); } /* get new buffer */ cb = udl_cmd_buf_alloc(sc, M_WAITOK); if (cb == NULL) return (EAGAIN); /* show framebuffer content */ udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); udl_cmd_buf_send(sc, cb); return (0); } static void udl_select_mode(struct udl_softc *sc) { struct udl_mode mode; int index = UDL_MAX_MODES; int i; /* try to get the preferred mode from EDID */ edid_parse(sc->sc_edid, &sc->sc_edid_info); #ifdef USB_DEBUG edid_print(&sc->sc_edid_info); #endif if (sc->sc_edid_info.edid_preferred_mode != NULL) { mode.hz = (sc->sc_edid_info.edid_preferred_mode->dot_clock * 1000) / (sc->sc_edid_info.edid_preferred_mode->htotal * sc->sc_edid_info.edid_preferred_mode->vtotal); mode.clock = sc->sc_edid_info.edid_preferred_mode->dot_clock / 10; mode.hdisplay = sc->sc_edid_info.edid_preferred_mode->hdisplay; mode.vdisplay = sc->sc_edid_info.edid_preferred_mode->vdisplay; index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, mode.hz, sc->sc_chip, mode.clock); sc->sc_cur_mode = index; } else { DPRINTF("no preferred mode found!\n"); } if (index == UDL_MAX_MODES) { DPRINTF("no mode line found\n"); i = 0; while (i < sc->sc_edid_info.edid_nmodes) { mode.hz = (sc->sc_edid_info.edid_modes[i].dot_clock * 1000) / (sc->sc_edid_info.edid_modes[i].htotal * sc->sc_edid_info.edid_modes[i].vtotal); mode.clock = sc->sc_edid_info.edid_modes[i].dot_clock / 10; mode.hdisplay = sc->sc_edid_info.edid_modes[i].hdisplay; mode.vdisplay = sc->sc_edid_info.edid_modes[i].vdisplay; index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, mode.hz, sc->sc_chip, mode.clock); if (index < UDL_MAX_MODES) if ((sc->sc_cur_mode == UDL_MAX_MODES) || (index > sc->sc_cur_mode)) sc->sc_cur_mode = index; i++; } } /* * If no mode found use default. */ if (sc->sc_cur_mode == UDL_MAX_MODES) sc->sc_cur_mode = udl_lookup_mode(800, 600, 60, sc->sc_chip, 0); } static int udl_cmd_write_buf_le16(struct udl_softc *sc, const uint8_t *buf, uint32_t off, uint8_t pixels, int flags) { struct udl_cmd_buf *cb; cb = udl_cmd_buf_alloc(sc, flags); if (cb == NULL) return (EAGAIN); udl_cmd_insert_int_1(cb, UDL_BULK_SOC); udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); udl_cmd_insert_int_3(cb, off); udl_cmd_insert_int_1(cb, pixels); udl_cmd_insert_buf_le16(cb, buf, 2 * pixels); udl_cmd_buf_send(sc, cb); return (0); } static int udl_cmd_buf_copy_le16(struct udl_softc *sc, uint32_t src, uint32_t dst, uint8_t pixels, int flags) { struct udl_cmd_buf *cb; cb = udl_cmd_buf_alloc(sc, flags); if (cb == NULL) return (EAGAIN); udl_cmd_insert_int_1(cb, UDL_BULK_SOC); udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_COPY | UDL_BULK_CMD_FB_WORD); udl_cmd_insert_int_3(cb, dst); udl_cmd_insert_int_1(cb, pixels); udl_cmd_insert_int_3(cb, src); udl_cmd_buf_send(sc, cb); return (0); }