diff options
Diffstat (limited to 'sys/dev/puc/puc.c')
| -rw-r--r-- | sys/dev/puc/puc.c | 708 |
1 files changed, 708 insertions, 0 deletions
diff --git a/sys/dev/puc/puc.c b/sys/dev/puc/puc.c new file mode 100644 index 000000000000..83da26c102a1 --- /dev/null +++ b/sys/dev/puc/puc.c @@ -0,0 +1,708 @@ +/* $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ */ + +/*- + * Copyright (c) 2002 JF Hay. All rights reserved. + * Copyright (c) 2000 M. Warner Losh. All rights reserved. + * + * 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 unmodified, 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 AUTHOR ``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 AUTHOR 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. + */ + +/* + * Copyright (c) 1996, 1998, 1999 + * Christopher G. Demetriou. All rights reserved. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Christopher G. Demetriou + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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> +__FBSDID("$FreeBSD$"); + +/* + * PCI "universal" communication card device driver, glues com, lpt, + * and similar ports to PCI via bridge chip often much larger than + * the devices being glued. + * + * Author: Christopher G. Demetriou, May 14, 1998 (derived from NetBSD + * sys/dev/pci/pciide.c, revision 1.6). + * + * These devices could be (and some times are) described as + * communications/{serial,parallel}, etc. devices with known + * programming interfaces, but those programming interfaces (in + * particular the BAR assignments for devices, etc.) in fact are not + * particularly well defined. + * + * After I/we have seen more of these devices, it may be possible + * to generalize some of these bits. In particular, devices which + * describe themselves as communications/serial/16[45]50, and + * communications/parallel/??? might be attached via direct + * 'com' and 'lpt' attachments to pci. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/malloc.h> + +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#if __FreeBSD_version < 500000 +#include <pci/pcireg.h> +#include <pci/pcivar.h> +#else +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> +#endif +#include <dev/puc/pucvar.h> + +#include <opt_puc.h> + +struct puc_softc { + const struct puc_device_description *sc_desc; + + /* card-global dynamic data */ + int barmuxed; + int irqrid; + struct resource *irqres; + void *intr_cookie; + + struct { + struct resource *res; + } sc_bar_mappings[PUC_MAX_BAR]; + + /* per-port dynamic data */ + struct { + struct device *dev; + /* filled in by bus_setup_intr() */ + void (*ihand) __P((void *)); + void *ihandarg; + } sc_ports[PUC_MAX_PORTS]; +}; + +struct puc_device { + struct resource_list resources; + u_int serialfreq; +}; + +static int puc_pci_probe(device_t dev); +static int puc_pci_attach(device_t dev); +static void puc_intr(void *arg); + +static struct resource *puc_alloc_resource(device_t, device_t, int, int *, + u_long, u_long, u_long, u_int); +static int puc_release_resource(device_t, device_t, int, int, + struct resource *); +static int puc_get_resource(device_t, device_t, int, int, u_long *, u_long *); +static int puc_setup_intr(device_t, device_t, struct resource *, int, + void (*)(void *), void *, void **); +static int puc_teardown_intr(device_t, device_t, struct resource *, + void *); +static int puc_read_ivar(device_t, device_t, int, uintptr_t *); + +static const struct puc_device_description *puc_find_description(uint32_t, + uint32_t, uint32_t, uint32_t); +static void puc_config_superio(device_t); +static void puc_config_win877(struct resource *); +static int puc_find_free_unit(char *); +#ifdef PUC_DEBUG +static void puc_print_win877(bus_space_tag_t, bus_space_handle_t, u_int, + u_int); +static void puc_print_resource_list(struct resource_list *); +#endif + +static int +puc_pci_probe(device_t dev) +{ + uint32_t v1, v2, d1, d2; + const struct puc_device_description *desc; + + if (pci_read_config(dev, PCIR_HEADERTYPE, 1) != 0) + return (ENXIO); + + v1 = pci_read_config(dev, PCIR_VENDOR, 2); + d1 = pci_read_config(dev, PCIR_DEVICE, 2); + v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); + d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); + + desc = puc_find_description(v1, d1, v2, d2); + if (desc == NULL) + return (ENXIO); + device_set_desc(dev, desc->name); + return (0); +} + +static int +puc_pci_attach(device_t dev) +{ + char *typestr; + int bidx, childunit, i, irq_setup, rid; + uint32_t v1, v2, d1, d2; + struct puc_softc *sc; + struct puc_device *pdev; + struct resource *res; + struct resource_list_entry *rle; + + sc = (struct puc_softc *)device_get_softc(dev); + bzero(sc, sizeof(*sc)); + v1 = pci_read_config(dev, PCIR_VENDOR, 2); + d1 = pci_read_config(dev, PCIR_DEVICE, 2); + v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); + d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); + sc->sc_desc = puc_find_description(v1, d1, v2, d2); + if (sc->sc_desc == NULL) + return (ENXIO); + +#ifdef PUC_DEBUG + bootverbose = 1; + + printf("puc: name: %s\n", sc->sc_desc->name); +#endif + rid = 0; + res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, + RF_ACTIVE | RF_SHAREABLE); + if (!res) + return (ENXIO); + + sc->irqres = res; + sc->irqrid = rid; +#ifdef PUC_FASTINTR + irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, + INTR_TYPE_TTY | INTR_FAST, puc_intr, sc, &sc->intr_cookie); +#else + irq_setup = ENXIO; +#endif + if (irq_setup != 0) + irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, + INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie); + if (irq_setup != 0) + return (ENXIO); + + rid = 0; + for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { + if (rid == sc->sc_desc->ports[i].bar) + sc->barmuxed = 1; + rid = sc->sc_desc->ports[i].bar; + bidx = PUC_PORT_BAR_INDEX(rid); + + if (sc->sc_bar_mappings[bidx].res != NULL) + continue; + res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, + 0ul, ~0ul, 1, RF_ACTIVE); + if (res == NULL) { + printf("could not get resource\n"); + continue; + } + sc->sc_bar_mappings[bidx].res = res; +#ifdef PUC_DEBUG + printf("port bst %x, start %x, end %x\n", + (u_int)rman_get_bustag(res), (u_int)rman_get_start(res), + (u_int)rman_get_end(res)); +#endif + } + + puc_config_superio(dev); + + for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { + rid = sc->sc_desc->ports[i].bar; + bidx = PUC_PORT_BAR_INDEX(rid); + if (sc->sc_bar_mappings[bidx].res == NULL) + continue; + + switch (sc->sc_desc->ports[i].type) { + case PUC_PORT_TYPE_COM: + typestr = "sio"; + break; + default: + continue; + } + pdev = malloc(sizeof(struct puc_device), M_DEVBUF, + M_NOWAIT | M_ZERO); + if (!pdev) + continue; + resource_list_init(&pdev->resources); + + /* First fake up an IRQ resource. */ + resource_list_add(&pdev->resources, SYS_RES_IRQ, 0, + rman_get_start(sc->irqres), rman_get_end(sc->irqres), + rman_get_end(sc->irqres) - rman_get_start(sc->irqres) + 1); + rle = resource_list_find(&pdev->resources, SYS_RES_IRQ, 0); + rle->res = sc->irqres; + + /* Now fake an IOPORT resource */ + res = sc->sc_bar_mappings[bidx].res; + resource_list_add(&pdev->resources, SYS_RES_IOPORT, 0, + rman_get_start(res) + sc->sc_desc->ports[i].offset, + rman_get_end(res) + sc->sc_desc->ports[i].offset + 8 - 1, + 8); + rle = resource_list_find(&pdev->resources, SYS_RES_IOPORT, 0); + + if (sc->barmuxed == 0) { + rle->res = sc->sc_bar_mappings[bidx].res; + } else { + rle->res = malloc(sizeof(struct resource), M_DEVBUF, + M_WAITOK | M_ZERO); + if (rle->res == NULL) + return (ENOMEM); + + rle->res->r_start = rman_get_start(res) + + sc->sc_desc->ports[i].offset; + rle->res->r_end = rle->res->r_start + 8 - 1; + rle->res->r_bustag = rman_get_bustag(res); + bus_space_subregion(rle->res->r_bustag, + rman_get_bushandle(res), + sc->sc_desc->ports[i].offset, 8, + &rle->res->r_bushandle); + } + + pdev->serialfreq = sc->sc_desc->ports[i].serialfreq; + + childunit = puc_find_free_unit(typestr); + sc->sc_ports[i].dev = device_add_child(dev, typestr, childunit); + if (sc->sc_ports[i].dev == NULL) + continue; + device_set_ivars(sc->sc_ports[i].dev, pdev); + device_set_desc(sc->sc_ports[i].dev, sc->sc_desc->name); + if (!bootverbose) + device_quiet(sc->sc_ports[i].dev); +#ifdef PUC_DEBUG + printf("puc: type %d, bar %x, offset %x\n", + sc->sc_desc->ports[i].type, + sc->sc_desc->ports[i].bar, + sc->sc_desc->ports[i].offset); + print_resource_list(&pdev->resources); +#endif + device_probe_and_attach(sc->sc_ports[i].dev); + } + +#ifdef PUC_DEBUG + bootverbose = 0; +#endif + return (0); +} + +/* + * This is just an brute force interrupt handler. It just calls all the + * registered handlers sequencially. + * + * Later on we should maybe have a different handler for boards that can + * tell us which device generated the interrupt. + */ +static void +puc_intr(void *arg) +{ + int i; + struct puc_softc *sc; + + sc = (struct puc_softc *)arg; + for (i = 0; i < PUC_MAX_PORTS; i++) + if (sc->sc_ports[i].ihand != NULL) + (sc->sc_ports[i].ihand)(sc->sc_ports[i].ihandarg); +} + +static const struct puc_device_description * +puc_find_description(uint32_t vend, uint32_t prod, uint32_t svend, + uint32_t sprod) +{ + int i; + +#define checkreg(val, index) \ + (((val) & puc_devices[i].rmask[(index)]) == puc_devices[i].rval[(index)]) + + for (i = 0; puc_devices[i].name != NULL; i++) { + if (checkreg(vend, PUC_REG_VEND) && + checkreg(prod, PUC_REG_PROD) && + checkreg(svend, PUC_REG_SVEND) && + checkreg(sprod, PUC_REG_SPROD)) + return (&puc_devices[i]); + } + +#undef checkreg + + return (NULL); +} + +/* + * It might be possible to make these more generic if we can detect patterns. + * For instance maybe if the size of a bar is 0x400 (the old isa space) it + * might contain one or more superio chips. + */ +static void +puc_config_superio(device_t dev) +{ + struct puc_softc *sc = (struct puc_softc *)device_get_softc(dev); + + if (sc->sc_desc->rval[PUC_REG_VEND] == 0x1592 && + sc->sc_desc->rval[PUC_REG_PROD] == 0x0781) + puc_config_win877(sc->sc_bar_mappings[0].res); +} + +#define rdspio(indx) (bus_space_write_1(bst, bsh, efir, indx), \ + bus_space_read_1(bst, bsh, efdr)) +#define wrspio(indx,data) (bus_space_write_1(bst, bsh, efir, indx), \ + bus_space_write_1(bst, bsh, efdr, data)) + +#ifdef PUC_DEBUG +static void +puc_print_win877(bus_space_tag_t bst, bus_space_handle_t bsh, u_int efir, + u_int efdr) +{ + u_char cr00, cr01, cr04, cr09, cr0d, cr14, cr15, cr16, cr17; + u_char cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32; + + cr00 = rdspio(0x00); + cr01 = rdspio(0x01); + cr04 = rdspio(0x04); + cr09 = rdspio(0x09); + cr0d = rdspio(0x0d); + cr14 = rdspio(0x14); + cr15 = rdspio(0x15); + cr16 = rdspio(0x16); + cr17 = rdspio(0x17); + cr18 = rdspio(0x18); + cr19 = rdspio(0x19); + cr24 = rdspio(0x24); + cr25 = rdspio(0x25); + cr28 = rdspio(0x28); + cr2c = rdspio(0x2c); + cr31 = rdspio(0x31); + cr32 = rdspio(0x32); + printf("877T: cr00 %x, cr01 %x, cr04 %x, cr09 %x, cr0d %x, cr14 %x, " + "cr15 %x, cr16 %x, cr17 %x, cr18 %x, cr19 %x, cr24 %x, cr25 %x, " + "cr28 %x, cr2c %x, cr31 %x, cr32 %x\n", cr00, cr01, cr04, cr09, + cr0d, cr14, cr15, cr16, cr17, + cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32); +} +#endif + +static void +puc_config_win877(struct resource *res) +{ + u_char val; + u_int efir, efdr; + bus_space_tag_t bst; + bus_space_handle_t bsh; + + bst = rman_get_bustag(res); + bsh = rman_get_bushandle(res); + + /* configure the first W83877TF */ + bus_space_write_1(bst, bsh, 0x250, 0x89); + efir = 0x251; + efdr = 0x252; + val = rdspio(0x09) & 0x0f; + if (val != 0x0c) { + printf("conf_win877: Oops not a W83877TF\n"); + return; + } + +#ifdef PUC_DEBUG + printf("before: "); + puc_print_win877(bst, bsh, efir, efdr); +#endif + + val = rdspio(0x16); + val |= 0x04; + wrspio(0x16, val); + val &= ~0x04; + wrspio(0x16, val); + + wrspio(0x24, 0x2e8 >> 2); + wrspio(0x25, 0x2f8 >> 2); + wrspio(0x17, 0x03); + wrspio(0x28, 0x43); + +#ifdef PUC_DEBUG + printf("after: "); + puc_print_win877(bst, bsh, efir, efdr); +#endif + + bus_space_write_1(bst, bsh, 0x250, 0xaa); + + /* configure the second W83877TF */ + bus_space_write_1(bst, bsh, 0x3f0, 0x87); + bus_space_write_1(bst, bsh, 0x3f0, 0x87); + efir = 0x3f0; + efdr = 0x3f1; + val = rdspio(0x09) & 0x0f; + if (val != 0x0c) { + printf("conf_win877: Oops not a W83877TF\n"); + return; + } + +#ifdef PUC_DEBUG + printf("before: "); + puc_print_win877(bst, bsh, efir, efdr); +#endif + + val = rdspio(0x16); + val |= 0x04; + wrspio(0x16, val); + val &= ~0x04; + wrspio(0x16, val); + + wrspio(0x24, 0x3e8 >> 2); + wrspio(0x25, 0x3f8 >> 2); + wrspio(0x17, 0x03); + wrspio(0x28, 0x43); + +#ifdef PUC_DEBUG + printf("after: "); + puc_print_win877(bst, bsh, efir, efdr); +#endif + + bus_space_write_1(bst, bsh, 0x3f0, 0xaa); +} + +#undef rdspio +#undef wrspio + +static int puc_find_free_unit(char *name) +{ + devclass_t dc; + int start; + int unit; + + unit = 0; + start = 0; + while (resource_int_value(name, unit, "port", &start) == 0 && + start > 0) + unit++; + dc = devclass_find(name); + if (dc == NULL) + return (-1); + while (devclass_get_device(dc, unit)) + unit++; +#ifdef PUC_DEBUG + printf("puc: Using %s%d\n", name, unit); +#endif + return (unit); +} + +#ifdef PUC_DEBUG +static void +puc_print_resource_list(struct resource_list *rl) +{ + struct resource_list_entry *rle; + + printf("print_resource_list: rl %p\n", rl); + SLIST_FOREACH(rle, rl, link) + printf("type %x, rid %x\n", rle->type, rle->rid); + printf("print_resource_list: end.\n"); +} +#endif + +/* XXX + * This function should be part of the general bus_space_* functions. It + * should also handle the PC98 case where bus_space_handle_t is a structure. + */ +int +bus_space_subregion(bus_space_tag_t t, bus_space_handle_t h, bus_size_t offset, + bus_size_t s, bus_space_handle_t *newhandle) +{ + *newhandle = h + offset; + return (0); +} + +static struct resource * +puc_alloc_resource(device_t dev, device_t child, int type, int *rid, + u_long start, u_long end, u_long count, u_int flags) +{ + struct puc_device *pdev; + struct resource *retval; + struct resource_list *rl; + struct resource_list_entry *rle; + + pdev = device_get_ivars(child); + rl = &pdev->resources; + +#ifdef PUC_DEBUG + printf("puc_alloc_resource: pdev %p, looking for t %x, r %x\n", + pdev, type, *rid); + puc_print_resource_list(rl); +#endif + retval = NULL; + rle = resource_list_find(rl, type, *rid); + if (rle) { + start = rle->start; + end = rle->end; + count = rle->count; +#ifdef PUC_DEBUG + printf("found rle, %lx, %lx, %lx\n", start, end, count); +#endif + retval = rle->res; + } else + printf("oops rle is gone\n"); + + return (retval); +} + +static int +puc_release_resource(device_t dev, device_t child, int type, int rid, + struct resource *res) +{ + return (0); +} + +static int +puc_get_resource(device_t dev, device_t child, int type, int rid, + u_long *startp, u_long *countp) +{ + struct puc_device *pdev; + struct resource_list *rl; + struct resource_list_entry *rle; + + pdev = device_get_ivars(child); + rl = &pdev->resources; + +#ifdef PUC_DEBUG + printf("puc_get_resource: pdev %p, looking for t %x, r %x\n", pdev, + type, rid); + puc_print_resource_list(rl); +#endif + rle = resource_list_find(rl, type, rid); + if (rle) { +#ifdef PUC_DEBUG + printf("found rle %p,", rle); +#endif + if (startp != NULL) + *startp = rle->start; + if (countp != NULL) + *countp = rle->count; +#ifdef PUC_DEBUG + printf(" %lx, %lx\n", rle->start, rle->count); +#endif + return (0); + } else + printf("oops rle is gone\n"); + return (ENXIO); +} + +static int +puc_setup_intr(device_t dev, device_t child, struct resource *r, int flags, + void (*ihand)(void *), void *arg, void **cookiep) +{ + int i; + struct puc_softc *sc; + + sc = (struct puc_softc *)device_get_softc(dev); + for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { + if (sc->sc_ports[i].dev == child) { + if (sc->sc_ports[i].ihand != 0) + return (ENXIO); + sc->sc_ports[i].ihand = ihand; + sc->sc_ports[i].ihandarg = arg; + *cookiep = arg; + return (0); + } + } + return (ENXIO); +} + +static int +puc_teardown_intr(device_t dev, device_t child, struct resource *r, + void *cookie) +{ + int i; + struct puc_softc *sc; + + sc = (struct puc_softc *)device_get_softc(dev); + for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { + if (sc->sc_ports[i].dev == child) { + sc->sc_ports[i].ihand = NULL; + sc->sc_ports[i].ihandarg = NULL; + return (0); + } + } + return (ENXIO); +} + +static int +puc_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) +{ + struct puc_device *pdev; + + pdev = device_get_ivars(child); + if (pdev == NULL) + return (ENOENT); + + switch(index) { + case PUC_IVAR_FREQ: + *result = pdev->serialfreq; + break; + default: + return (ENOENT); + } + return (0); +} + +static device_method_t puc_pci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, puc_pci_probe), + DEVMETHOD(device_attach, puc_pci_attach), + + DEVMETHOD(bus_alloc_resource, puc_alloc_resource), + DEVMETHOD(bus_release_resource, puc_release_resource), + DEVMETHOD(bus_get_resource, puc_get_resource), + DEVMETHOD(bus_read_ivar, puc_read_ivar), + DEVMETHOD(bus_setup_intr, puc_setup_intr), + DEVMETHOD(bus_teardown_intr, puc_teardown_intr), + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + { 0, 0 } +}; + +static driver_t puc_pci_driver = { + "puc", + puc_pci_methods, + sizeof(struct puc_softc), +}; + +static devclass_t puc_devclass; + +DRIVER_MODULE(puc, pci, puc_pci_driver, puc_devclass, 0, 0); |