Index: head/sys/kern/subr_bus.c =================================================================== --- head/sys/kern/subr_bus.c (revision 40670) +++ head/sys/kern/subr_bus.c (revision 40671) @@ -1,1043 +1,1356 @@ /*- * Copyright (c) 1997,1998 Doug Rabson * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * - * $Id: subr_bus.c,v 1.6 1998/10/03 08:55:29 dfr Exp $ + * $Id: subr_bus.c,v 1.7 1998/10/25 17:44:51 phk Exp $ */ #include #include #include #include #include #include #include +#include "opt_bus.h" + +#ifdef BUS_DEBUG +#define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n")) +#define DEVICENAME(d) ((d)? device_get_name(d): "no device") +#define DRIVERNAME(d) ((d)? d->name : "no driver") +#define DEVCLANAME(d) ((d)? d->name : "no devclass") + +/* Produce the indenting, indent*2 spaces plus a '.' ahead of that to + * prevent syslog from deleting initial spaces + */ +#define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJname)) { desc->offset = methods[i].offset; + PDEBUG(("methods[%d] has the same name, %s, with offset %d", + i, desc->name, desc->offset)); return; } if (methods_count == methods_size) { struct method* p; methods_size += 10; p = (struct method*) malloc(methods_size * sizeof(struct method), M_DEVBUF, M_NOWAIT); if (!p) panic("register_method: out of memory"); if (methods) { bcopy(methods, p, methods_count * sizeof(struct method)); free(methods, M_DEVBUF); } methods = p; } m = &methods[methods_count++]; m->name = malloc(strlen(desc->name) + 1, M_DEVBUF, M_NOWAIT); if (!m->name) panic("register_method: out of memory"); strcpy(m->name, desc->name); desc->offset = m->offset = next_method_offset++; } static int error_method(void) { return ENXIO; } static struct device_ops null_ops = { 1, { error_method } }; static void compile_methods(driver_t *driver) { device_ops_t ops; struct device_method *m; int i; /* * First register any methods which need it. */ for (i = 0, m = driver->methods; m->desc; i++, m++) if (!m->desc->offset) register_method(m->desc); + else + PDEBUG(("offset not equal to zero, method desc %d left as is", i)); /* * Then allocate the compiled op table. */ ops = malloc(sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t), M_DEVBUF, M_NOWAIT); if (!ops) panic("compile_methods: out of memory"); + ops->maxoffset = next_method_offset; for (i = 0; i < next_method_offset; i++) ops->methods[i] = error_method; for (i = 0, m = driver->methods; m->desc; i++, m++) ops->methods[m->desc->offset] = m->func; + PDEBUG(("%s has %d method%s, wasting %d bytes", + DRIVERNAME(driver), i, (i==1?"":"s"), + (next_method_offset-i)*sizeof(devop_t))); + driver->ops = ops; } /* * Devclass implementation */ -static devclass_list_t devclasses; +static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); -static void -devclass_init(void) -{ - TAILQ_INIT(&devclasses); -} - static devclass_t devclass_find_internal(const char *classname, int create) { devclass_t dc; + PDEBUG(("looking for %s", classname)); + if (!classname) + return NULL; + for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) if (!strcmp(dc->name, classname)) return dc; + PDEBUG(("%s not found%s", classname, (create? ", creating": ""))); if (create) { dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, M_DEVBUF, M_NOWAIT); if (!dc) return NULL; dc->name = (char*) (dc + 1); strcpy(dc->name, classname); dc->devices = NULL; dc->maxunit = 0; dc->nextunit = 0; TAILQ_INIT(&dc->drivers); TAILQ_INSERT_TAIL(&devclasses, dc, link); } return dc; } devclass_t devclass_find(const char *classname) { return devclass_find_internal(classname, FALSE); } int devclass_add_driver(devclass_t dc, driver_t *driver) { + PDEBUG(("%s", DRIVERNAME(driver))); /* * Compile the drivers methods. */ compile_methods(driver); /* * Make sure the devclass which the driver is implementing exists. */ devclass_find_internal(driver->name, TRUE); TAILQ_INSERT_TAIL(&dc->drivers, driver, link); return 0; } int -devclass_delete_driver(devclass_t dc, driver_t *driver) +devclass_delete_driver(devclass_t busclass, driver_t *driver) { - device_t bus; + devclass_t dc = devclass_find(driver->name); device_t dev; int i; int error; + PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); + + if (!dc) + return 0; + /* * Disassociate from any devices. We iterate through all the - * devices attached to any bus in this class. + * devices in the devclass of the driver and detach any which are + * using the driver. */ for (i = 0; i < dc->maxunit; i++) { if (dc->devices[i]) { - bus = dc->devices[i]->parent; - for (dev = TAILQ_FIRST(&bus->children); dev; - dev = TAILQ_NEXT(dev, link)) - if (dev->driver == driver) { - if (error = device_detach(dev)) - return error; - device_set_driver(dev, NULL); - } + dev = dc->devices[i]; + if (dev->driver == driver) { + if (error = device_detach(dev)) + return error; + device_set_driver(dev, NULL); + } } } - TAILQ_REMOVE(&dc->drivers, driver, link); + TAILQ_REMOVE(&busclass->drivers, driver, link); return 0; } driver_t * devclass_find_driver(devclass_t dc, const char *classname) { driver_t *driver; + PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); + for (driver = TAILQ_FIRST(&dc->drivers); driver; - driver = TAILQ_NEXT(driver, link)) + driver = TAILQ_NEXT(driver, link)) { if (!strcmp(driver->name, classname)) return driver; + } + PDEBUG(("not found")); return NULL; } const char * devclass_get_name(devclass_t dc) { return dc->name; } device_t devclass_get_device(devclass_t dc, int unit) { if (unit < 0 || unit >= dc->maxunit) return NULL; return dc->devices[unit]; } void * devclass_get_softc(devclass_t dc, int unit) { device_t dev; if (unit < 0 || unit >= dc->maxunit) return NULL; dev = dc->devices[unit]; if (!dev || dev->state < DS_ATTACHED) return NULL; return dev->softc; } int devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) { int i; int count; device_t *list; count = 0; for (i = 0; i < dc->maxunit; i++) if (dc->devices[i]) count++; list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); if (!list) return ENOMEM; count = 0; for (i = 0; i < dc->maxunit; i++) if (dc->devices[i]) { list[count] = dc->devices[i]; count++; } *devlistp = list; *devcountp = count; return 0; } int devclass_get_maxunit(devclass_t dc) { return dc->maxunit; } static int devclass_alloc_unit(devclass_t dc, int *unitp) { int unit = *unitp; + PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); + /* * If we have been given a wired unit number, check for existing * device. */ if (unit != -1) { device_t dev; dev = devclass_get_device(dc, unit); if (dev) { printf("devclass_alloc_unit: %s%d already exists, using next available unit number\n", dc->name, unit); unit = -1; } } if (unit == -1) { unit = dc->nextunit; dc->nextunit++; } else if (dc->nextunit <= unit) dc->nextunit = unit + 1; if (unit >= dc->maxunit) { device_t *newlist; int newsize; newsize = (dc->maxunit ? 2 * dc->maxunit : MINALLOCSIZE / sizeof(device_t)); newlist = malloc(sizeof(device_t) * newsize, M_DEVBUF, M_NOWAIT); if (!newlist) return ENOMEM; bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); bzero(newlist + dc->maxunit, sizeof(device_t) * (newsize - dc->maxunit)); if (dc->devices) free(dc->devices, M_DEVBUF); dc->devices = newlist; dc->maxunit = newsize; } + PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); *unitp = unit; return 0; } static int devclass_add_device(devclass_t dc, device_t dev) { int error; + PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); + if (error = devclass_alloc_unit(dc, &dev->unit)) return error; dc->devices[dev->unit] = dev; dev->devclass = dc; return 0; } static int devclass_delete_device(devclass_t dc, device_t dev) { + PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); + if (dev->devclass != dc || dc->devices[dev->unit] != dev) panic("devclass_delete_device: inconsistent device class"); dc->devices[dev->unit] = NULL; if (dev->flags & DF_WILDCARD) dev->unit = -1; dev->devclass = NULL; while (dc->nextunit > 0 && dc->devices[dc->nextunit - 1] == NULL) dc->nextunit--; return 0; } static device_t make_device(device_t parent, const char *name, int unit, void *ivars) { device_t dev; devclass_t dc; int error; + PDEBUG(("%s at %s as unit %d with%s ivars", + name, DEVICENAME(parent), unit, (ivars? "":"out"))); + if (name) { dc = devclass_find_internal(name, TRUE); if (!dc) { printf("make_device: can't find device class %s\n", name); return NULL; } if (error = devclass_alloc_unit(dc, &unit)) return NULL; } else dc = NULL; dev = malloc(sizeof(struct device), M_DEVBUF, M_NOWAIT); if (!dev) return 0; dev->parent = parent; TAILQ_INIT(&dev->children); dev->ops = &null_ops; dev->driver = NULL; dev->devclass = dc; dev->unit = unit; dev->desc = NULL; dev->busy = 0; dev->flags = DF_ENABLED; if (unit == -1) dev->flags |= DF_WILDCARD; if (name) dev->flags |= DF_FIXEDCLASS; dev->ivars = ivars; dev->softc = NULL; if (dc) dc->devices[unit] = dev; dev->state = DS_NOTPRESENT; return dev; } static void device_print_child(device_t dev, device_t child) { printf("%s%d", device_get_name(child), device_get_unit(child)); if (device_is_alive(child)) { if (device_get_desc(child)) printf(": <%s>", device_get_desc(child)); BUS_PRINT_CHILD(dev, child); } else printf(" not found"); printf("\n"); } device_t device_add_child(device_t dev, const char *name, int unit, void *ivars) { device_t child; + PDEBUG(("%s at %s as unit %d with%s ivars", + name, DEVICENAME(dev), unit, (ivars? "":"out"))); + child = make_device(dev, name, unit, ivars); TAILQ_INSERT_TAIL(&dev->children, child, link); return child; } device_t device_add_child_after(device_t dev, device_t place, const char *name, int unit, void *ivars) { device_t child; + PDEBUG(("%s at %s after %s as unit %d with%s ivars", + name, DEVICENAME(dev), DEVICENAME(place), unit, (ivars? "":"out"))); + child = make_device(dev, name, unit, ivars); if (place) { TAILQ_INSERT_AFTER(&dev->children, place, dev, link); } else { TAILQ_INSERT_HEAD(&dev->children, dev, link); } return child; } int device_delete_child(device_t dev, device_t child) { int error; + PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); + if (error = device_detach(child)) return error; if (child->devclass) devclass_delete_device(child->devclass, child); TAILQ_REMOVE(&dev->children, child, link); free(dev, M_DEVBUF); return 0; } /* * Find only devices attached to this bus. */ device_t device_find_child(device_t dev, const char *classname, int unit) { devclass_t dc; device_t child; dc = devclass_find(classname); if (!dc) return NULL; child = devclass_get_device(dc, unit); if (child && child->parent == dev) return child; return NULL; } static driver_t * first_matching_driver(devclass_t dc, device_t dev) { if (dev->devclass) return devclass_find_driver(dc, dev->devclass->name); else return TAILQ_FIRST(&dc->drivers); } static driver_t * next_matching_driver(devclass_t dc, device_t dev, driver_t *last) { if (dev->devclass) { driver_t *driver; for (driver = TAILQ_NEXT(last, link); driver; driver = TAILQ_NEXT(driver, link)) if (!strcmp(dev->devclass->name, driver->name)) return driver; return NULL; } else return TAILQ_NEXT(last, link); } static int device_probe_child(device_t dev, device_t child) { devclass_t dc; driver_t *driver; dc = dev->devclass; if (dc == NULL) panic("device_probe_child: parent device has no devclass"); if (child->state == DS_ALIVE) return 0; for (driver = first_matching_driver(dc, child); driver; driver = next_matching_driver(dc, child, driver)) { + PDEBUG(("Trying %s", DRIVERNAME(driver))); device_set_driver(child, driver); if (DEVICE_PROBE(child) == 0) { if (!child->devclass) device_set_devclass(child, driver->name); child->state = DS_ALIVE; return 0; } } return ENXIO; } device_t device_get_parent(device_t dev) { return dev->parent; } driver_t * device_get_driver(device_t dev) { return dev->driver; } devclass_t device_get_devclass(device_t dev) { return dev->devclass; } const char * device_get_name(device_t dev) { if (dev->devclass) return devclass_get_name(dev->devclass); return NULL; } int device_get_unit(device_t dev) { return dev->unit; } const char * device_get_desc(device_t dev) { return dev->desc; } void device_set_desc(device_t dev, const char* desc) { dev->desc = desc; } void * device_get_softc(device_t dev) { return dev->softc; } void * device_get_ivars(device_t dev) { return dev->ivars; } device_state_t device_get_state(device_t dev) { return dev->state; } void device_enable(device_t dev) { dev->flags |= DF_ENABLED; } void device_disable(device_t dev) { dev->flags &= ~DF_ENABLED; } void device_busy(device_t dev) { if (dev->state < DS_ATTACHED) panic("device_busy: called for unattached device"); if (dev->busy == 0 && dev->parent) device_busy(dev->parent); dev->busy++; dev->state = DS_BUSY; } void device_unbusy(device_t dev) { if (dev->state != DS_BUSY) panic("device_unbusy: called for non-busy device"); dev->busy--; if (dev->busy == 0) { if (dev->parent) device_unbusy(dev->parent); dev->state = DS_ATTACHED; } } int device_is_enabled(device_t dev) { return (dev->flags & DF_ENABLED) != 0; } int device_is_alive(device_t dev) { return dev->state >= DS_ALIVE; } int device_set_devclass(device_t dev, const char *classname) { devclass_t dc; if (dev->devclass) { printf("device_set_devclass: device class already set\n"); return EINVAL; } dc = devclass_find_internal(classname, TRUE); if (!dc) return ENOMEM; return devclass_add_device(dc, dev); } int device_set_driver(device_t dev, driver_t *driver) { if (dev->state >= DS_ATTACHED) return EBUSY; if (dev->driver == driver) return 0; if (dev->softc) { free(dev->softc, M_DEVBUF); dev->softc = NULL; } dev->ops = &null_ops; dev->driver = driver; if (driver) { dev->ops = driver->ops; dev->softc = malloc(driver->softc, M_DEVBUF, M_NOWAIT); + if (!dev->softc) { + dev->ops = &null_ops; + dev->driver = NULL; + return ENOMEM; + } bzero(dev->softc, driver->softc); } return 0; } int device_probe_and_attach(device_t dev) { device_t bus = dev->parent; int error; if (dev->state >= DS_ALIVE) return 0; if (dev->flags & DF_ENABLED) { device_probe_child(bus, dev); device_print_child(bus, dev); if (dev->state == DS_ALIVE) { error = DEVICE_ATTACH(dev); if (!error) dev->state = DS_ATTACHED; else { printf("device_probe_and_attach: %s%d attach returned %d\n", dev->driver->name, dev->unit, error); device_set_driver(dev, NULL); dev->state = DS_NOTPRESENT; } } } else printf("%s%d: disabled, not probed.\n", dev->devclass->name, dev->unit); return 0; } int device_detach(device_t dev) { int error; + PDEBUG(("%s", DEVICENAME(dev))); if (dev->state == DS_BUSY) return EBUSY; if (dev->state != DS_ATTACHED) return 0; if (error = DEVICE_DETACH(dev)) return error; if (!(dev->flags & DF_FIXEDCLASS)) devclass_delete_device(dev->devclass, dev); dev->state = DS_NOTPRESENT; device_set_driver(dev, NULL); return 0; } int device_shutdown(device_t dev) { if (dev->state < DS_ATTACHED) return 0; return DEVICE_SHUTDOWN(dev); } /* * Access functions for device resources. */ extern struct config_device devtab[]; extern int devtab_count; static int resource_match_string(int i, char *resname, char *value) { int j; struct resource *res; for (j = 0, res = devtab[i].resources; j < devtab[i].resource_count; j++, res++) if (!strcmp(res->name, resname) && res->type == RES_STRING && !strcmp(res->u.stringval, value)) return TRUE; return FALSE; } static int resource_find(const char *name, int unit, char *resname, struct resource **result) { int i, j; struct resource *res; /* * First check specific instances, then generic. */ for (i = 0; i < devtab_count; i++) { if (devtab[i].unit < 0) continue; if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { res = devtab[i].resources; for (j = 0; j < devtab[i].resource_count; j++, res++) if (!strcmp(res->name, resname)) { *result = res; return 0; } } } for (i = 0; i < devtab_count; i++) { if (devtab[i].unit >= 0) continue; if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { res = devtab[i].resources; for (j = 0; j < devtab[i].resource_count; j++, res++) if (!strcmp(res->name, resname)) { *result = res; return 0; } } } return ENOENT; } int resource_int_value(const char *name, int unit, char *resname, int *result) { int error; struct resource *res; if ((error = resource_find(name, unit, resname, &res)) != 0) return error; if (res->type != RES_INT) return EFTYPE; *result = res->u.intval; return 0; } int resource_long_value(const char *name, int unit, char *resname, long *result) { int error; struct resource *res; if ((error = resource_find(name, unit, resname, &res)) != 0) return error; if (res->type != RES_LONG) return EFTYPE; *result = res->u.longval; return 0; } int resource_string_value(const char *name, int unit, char *resname, char **result) { int error; struct resource *res; if ((error = resource_find(name, unit, resname, &res)) != 0) return error; if (res->type != RES_STRING) return EFTYPE; *result = res->u.stringval; return 0; } int resource_query_string(int i, char *resname, char *value) { if (i < 0) i = 0; else i = i + 1; for (; i < devtab_count; i++) if (resource_match_string(i, resname, value)) return i; return -1; } char * resource_query_name(int i) { return devtab[i].name; } int resource_query_unit(int i) { return devtab[i].unit; } /* * Some useful method implementations to make life easier for bus drivers. */ int bus_generic_attach(device_t dev) { device_t child; for (child = TAILQ_FIRST(&dev->children); child; child = TAILQ_NEXT(child, link)) device_probe_and_attach(child); return 0; } int bus_generic_detach(device_t dev) { device_t child; + int error; if (dev->state != DS_ATTACHED) return EBUSY; for (child = TAILQ_FIRST(&dev->children); child; child = TAILQ_NEXT(child, link)) - device_detach(child); + if (error = device_detach(child)) + return error; return 0; } int bus_generic_shutdown(device_t dev) { device_t child; for (child = TAILQ_FIRST(&dev->children); child; child = TAILQ_NEXT(child, link)) DEVICE_SHUTDOWN(child); return 0; } void bus_generic_print_child(device_t dev, device_t child) { } int bus_generic_read_ivar(device_t dev, device_t child, int index, u_long* result) { return ENOENT; } int bus_generic_write_ivar(device_t dev, device_t child, int index, u_long value) { return ENOENT; } void * bus_generic_create_intr(device_t dev, device_t child, int irq, driver_intr_t *intr, void *arg) { /* Propagate up the bus hierarchy until someone handles it. */ if (dev->parent) return BUS_CREATE_INTR(dev->parent, dev, irq, intr, arg); else return NULL; } int bus_generic_connect_intr(device_t dev, void *ih) { /* Propagate up the bus hierarchy until someone handles it. */ if (dev->parent) return BUS_CONNECT_INTR(dev->parent, ih); else return EINVAL; } static int root_create_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg) { /* * If an interrupt mapping gets to here something bad has happened. * Should probably panic. */ return EINVAL; } static device_method_t root_methods[] = { /* Bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), DEVMETHOD(bus_create_intr, root_create_intr), { 0, 0 } }; static driver_t root_driver = { "root", root_methods, DRIVER_TYPE_MISC, 1, /* no softc */ }; device_t root_bus; devclass_t root_devclass; static int root_bus_module_handler(module_t mod, modeventtype_t what, void* arg) { switch (what) { case MOD_LOAD: - devclass_init(); compile_methods(&root_driver); root_bus = make_device(NULL, "root", 0, NULL); + root_bus->desc = "System root bus"; root_bus->ops = root_driver.ops; root_bus->driver = &root_driver; root_bus->state = DS_ATTACHED; - root_devclass = devclass_find("root"); + root_devclass = devclass_find_internal("root", FALSE); return 0; } return 0; } static moduledata_t root_bus_mod = { "rootbus", root_bus_module_handler, 0 }; DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); void root_bus_configure() { device_t dev; + PDEBUG((".")); + for (dev = TAILQ_FIRST(&root_bus->children); dev; dev = TAILQ_NEXT(dev, link)) { device_probe_and_attach(dev); } } int driver_module_handler(module_t mod, modeventtype_t what, void* arg) { struct driver_module_data* data = (struct driver_module_data*) arg; devclass_t bus_devclass = devclass_find_internal(data->busname, TRUE); int error; switch (what) { case MOD_LOAD: + PDEBUG(("Loading module: driver %s on bus %s", + DRIVERNAME(data->driver), data->busname)); if (error = devclass_add_driver(bus_devclass, data->driver)) return error; *data->devclass = devclass_find_internal(data->driver->name, TRUE); break; case MOD_UNLOAD: + PDEBUG(("Unloading module: driver %s from bus %s", + DRIVERNAME(data->driver), data->busname)); if (error = devclass_delete_driver(bus_devclass, data->driver)) return error; break; } if (data->chainevh) return data->chainevh(mod, what, data->chainarg); else return 0; } + + + +#ifdef BUS_DEBUG + +/* the _short versions avoid iteration by not calling anything that prints + * more than oneliners. I love oneliners. + */ + +static void +print_method_list(device_method_t *m, int indent) +{ + int i; + + if (!m) + return; + + for (i = 0; m->desc; i++, m++) + indentprintf(("method %d: %s, offset=%d\n", + i, m->desc->name, m->desc->offset)); +} + +static void +print_device_ops(device_ops_t ops, int indent) +{ + int i; + int count = 0; + + if (!ops) + return; + + /* we present a list of the methods that are pointing to the + * error_method, but ignore the 0'th elements; it is always + * error_method. + */ + for (i = 1; i < ops->maxoffset; i++) { + if (ops->methods[i] == error_method) { + if (count == 0) + indentprintf(("error_method:")); + printf(" %d", i); + count++; + } + } + if (count) + printf("\n"); + + indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", + ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), + ops->maxoffset-1-count, + count, (count == 1? "":"'s"))); +} + +static void +print_device_short(device_t dev, int indent) +{ + if (!dev) + return; + + indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%sivars,%ssoftc,busy=%d\n", + dev->unit, dev->desc, + (dev->parent? "":"no "), + (TAILQ_EMPTY(&dev->children)? "no ":""), + (dev->flags&DF_ENABLED? "enabled,":"disabled,"), + (dev->flags&DF_FIXEDCLASS? "fixed,":""), + (dev->flags&DF_WILDCARD? "wildcard,":""), + (dev->ivars? "":"no "), + (dev->softc? "":"no "), + dev->busy)); +} + +static void +print_device(device_t dev, int indent) +{ + if (!dev) + return; + + print_device_short(dev, indent); + + indentprintf(("Parent:\n")); + print_device_short(dev->parent, indent+1); + indentprintf(("Methods:\n")); + print_device_ops(dev->ops, indent+1); + indentprintf(("Driver:\n")); + print_driver_short(dev->driver, indent+1); + indentprintf(("Devclass:\n")); + print_devclass_short(dev->devclass, indent+1); +} + +void +print_device_tree_short(device_t dev, int indent) +/* print the device and all its children (indented) */ +{ + device_t child; + + if (!dev) + return; + + print_device_short(dev, indent); + + for (child = TAILQ_FIRST(&dev->children); child; + child = TAILQ_NEXT(child, link)) + print_device_tree_short(child, indent+1); +} + +void +print_device_tree(device_t dev, int indent) +/* print the device and all its children (indented) */ +{ + device_t child; + + if (!dev) + return; + + print_device(dev, indent); + + for (child = TAILQ_FIRST(&dev->children); child; + child = TAILQ_NEXT(child, link)) + print_device_tree(child, indent+1); +} + +static void +print_driver_short(driver_t *driver, int indent) +{ + if (!driver) + return; + + indentprintf(("driver %s: type = %s%s%s%s, softc size = %d\n", + driver->name, + /* yes, I know this looks silly, but going to bed at + * two o'clock and having to get up at 7:30 again is silly + * as well. As is sticking your head in a bucket of water. + */ + (driver->type == DRIVER_TYPE_TTY? "tty":""), + (driver->type == DRIVER_TYPE_BIO? "bio":""), + (driver->type == DRIVER_TYPE_NET? "net":""), + (driver->type == DRIVER_TYPE_MISC? "misc":""), + driver->softc)); +} + +static void +print_driver(driver_t *driver, int indent) +{ + if (!driver) + return; + + print_driver_short(driver, indent); + indentprintf(("Methods:\n")); + print_method_list(driver->methods, indent+1); + indentprintf(("Operations:\n")); + print_device_ops(driver->ops, indent+1); +} + + +static void +print_driver_list(driver_list_t drivers, int indent) +{ + driver_t *driver; + + for (driver = TAILQ_FIRST(&drivers); driver; + driver = TAILQ_NEXT(driver, link)) + print_driver(driver, indent); +} + +static void +print_devclass_short(devclass_t dc, int indent) +{ + device_t dev; + + if ( !dc ) + return; + + indentprintf(("devclass %s: max units = %d, next unit = %d\n", + dc->name, dc->maxunit, dc->nextunit)); +} + +static void +print_devclass(devclass_t dc, int indent) +{ + int i; + + if ( !dc ) + return; + + print_devclass_short(dc, indent); + indentprintf(("Drivers:\n")); + print_driver_list(dc->drivers, indent+1); + + indentprintf(("Devices:\n")); + for (i = 0; i < dc->maxunit; i++) + if (dc->devices[i]) + print_device(dc->devices[i], indent+1); +} + +void +print_devclass_list_short(void) +{ + devclass_t dc; + + printf("Short listing of devclasses, drivers & devices:\n"); + for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) + print_devclass_short(dc, 0); +} + +void +print_devclass_list(void) +{ + devclass_t dc; + + printf("Full listing of devclasses, drivers & devices:\n"); + for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) + print_devclass(dc, 0); +} + +#endif