aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/puc/puc.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/dev/puc/puc.c')
-rw-r--r--sys/dev/puc/puc.c708
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);