Index: head/sys/dev/uart/uart_bus_fdt.c =================================================================== --- head/sys/dev/uart/uart_bus_fdt.c (revision 303099) +++ head/sys/dev/uart/uart_bus_fdt.c (revision 303100) @@ -1,135 +1,258 @@ /*- * Copyright (c) 2009-2010 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under sponsorship from * the FreeBSD Foundation. * * 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. */ #include __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #include #include static int uart_fdt_probe(device_t); static device_method_t uart_fdt_methods[] = { /* Device interface */ DEVMETHOD(device_probe, uart_fdt_probe), DEVMETHOD(device_attach, uart_bus_attach), DEVMETHOD(device_detach, uart_bus_detach), { 0, 0 } }; static driver_t uart_fdt_driver = { uart_driver_name, uart_fdt_methods, sizeof(struct uart_softc), }; int uart_fdt_get_clock(phandle_t node, pcell_t *cell) { /* clock-frequency is a FreeBSD-only extension. */ if ((OF_getencprop(node, "clock-frequency", cell, sizeof(*cell))) <= 0) { /* Try to retrieve parent 'bus-frequency' */ /* XXX this should go to simple-bus fixup or so */ if ((OF_getencprop(OF_parent(node), "bus-frequency", cell, sizeof(*cell))) <= 0) *cell = 0; } return (0); } int uart_fdt_get_shift(phandle_t node, pcell_t *cell) { if ((OF_getencprop(node, "reg-shift", cell, sizeof(*cell))) <= 0) return (-1); return (0); } static uintptr_t uart_fdt_find_device(device_t dev) { struct ofw_compat_data **cd; const struct ofw_compat_data *ocd; SET_FOREACH(cd, uart_fdt_class_and_device_set) { ocd = ofw_bus_search_compatible(dev, *cd); if (ocd->ocd_data != 0) return (ocd->ocd_data); } return (0); } static int +phandle_chosen_propdev(phandle_t chosen, const char *name, phandle_t *node) +{ + char buf[64]; + + if (OF_getprop(chosen, name, buf, sizeof(buf)) <= 0) + return (ENXIO); + if ((*node = OF_finddevice(buf)) == -1) + return (ENXIO); + + return (0); +} + +static const struct ofw_compat_data * +uart_fdt_find_compatible(phandle_t node, const struct ofw_compat_data *cd) +{ + const struct ofw_compat_data *ocd; + + for (ocd = cd; ocd->ocd_str != NULL; ocd++) { + if (fdt_is_compatible(node, ocd->ocd_str)) + return (ocd); + } + return (NULL); +} + +static uintptr_t +uart_fdt_find_by_node(phandle_t node, int class_list) +{ + struct ofw_compat_data **cd; + const struct ofw_compat_data *ocd; + + if (class_list) { + SET_FOREACH(cd, uart_fdt_class_set) { + ocd = uart_fdt_find_compatible(node, *cd); + if ((ocd != NULL) && (ocd->ocd_data != 0)) + return (ocd->ocd_data); + } + } else { + SET_FOREACH(cd, uart_fdt_class_and_device_set) { + ocd = uart_fdt_find_compatible(node, *cd); + if ((ocd != NULL) && (ocd->ocd_data != 0)) + return (ocd->ocd_data); + } + } + + return (0); +} + +int +uart_cpu_fdt_probe(struct uart_class **classp, bus_space_tag_t *bst, + bus_space_handle_t *bsh, int *baud, u_int *rclk, u_int *shiftp) +{ + const char *propnames[] = {"stdout-path", "linux,stdout-path", "stdout", + "stdin-path", "stdin", NULL}; + const char **name; + struct uart_class *class; + phandle_t node, chosen; + pcell_t br, clk, shift; + char *cp; + int err; + + /* Has the user forced a specific device node? */ + cp = kern_getenv("hw.fdt.console"); + if (cp == NULL) { + /* + * Retrieve /chosen/std{in,out}. + */ + node = -1; + if ((chosen = OF_finddevice("/chosen")) != -1) { + for (name = propnames; *name != NULL; name++) { + if (phandle_chosen_propdev(chosen, *name, + &node) == 0) + break; + } + } + if (chosen == -1 || *name == NULL) + node = OF_finddevice("serial0"); /* Last ditch */ + } else { + node = OF_finddevice(cp); + } + + if (node == -1) + return (ENXIO); + + /* + * Check old style of UART definition first. Unfortunately, the common + * FDT processing is not possible if we have clock, power domains and + * pinmux stuff. + */ + class = (struct uart_class *)uart_fdt_find_by_node(node, 0); + if (class != NULL) { + if ((err = uart_fdt_get_clock(node, &clk)) != 0) + return (err); + } else { + /* Check class only linker set */ + class = + (struct uart_class *)uart_fdt_find_by_node(node, 1); + if (class == NULL) + return (ENXIO); + clk = 0; + } + + /* + * Retrieve serial attributes. + */ + if (uart_fdt_get_shift(node, &shift) != 0) + shift = uart_getregshift(class); + + if (OF_getencprop(node, "current-speed", &br, sizeof(br)) <= 0) + br = 0; + + err = OF_decode_addr(node, 0, bst, bsh, NULL); + if (err != 0) + return (err); + + *classp = class; + *baud = br; + *rclk = clk; + *shiftp = shift; + + return (0); +} + +static int uart_fdt_probe(device_t dev) { struct uart_softc *sc; phandle_t node; pcell_t clock, shift; int err; sc = device_get_softc(dev); if (!ofw_bus_status_okay(dev)) return (ENXIO); sc->sc_class = (struct uart_class *)uart_fdt_find_device(dev); if (sc->sc_class == NULL) return (ENXIO); node = ofw_bus_get_node(dev); if ((err = uart_fdt_get_clock(node, &clock)) != 0) return (err); if (uart_fdt_get_shift(node, &shift) != 0) shift = uart_getregshift(sc->sc_class); return (uart_bus_probe(dev, (int)shift, (int)clock, 0, 0)); } DRIVER_MODULE(uart, simplebus, uart_fdt_driver, uart_devclass, 0, 0); DRIVER_MODULE(uart, ofwbus, uart_fdt_driver, uart_devclass, 0, 0); Index: head/sys/dev/uart/uart_cpu_fdt.c =================================================================== --- head/sys/dev/uart/uart_cpu_fdt.c (revision 303099) +++ head/sys/dev/uart/uart_cpu_fdt.c (revision 303100) @@ -1,208 +1,160 @@ /*- * Copyright (c) 2009-2010 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under sponsorship from * the FreeBSD Foundation. * * 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. */ #include __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * UART console routines. */ bus_space_tag_t uart_bus_space_io; bus_space_tag_t uart_bus_space_mem; int uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) { if (b1->bst != b2->bst) return (0); if (pmap_kextract(b1->bsh) == 0) return (0); if (pmap_kextract(b2->bsh) == 0) return (0); return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0); } static int phandle_chosen_propdev(phandle_t chosen, const char *name, phandle_t *node) { char buf[64]; if (OF_getprop(chosen, name, buf, sizeof(buf)) <= 0) return (ENXIO); if ((*node = OF_finddevice(buf)) == -1) return (ENXIO); return (0); } static const struct ofw_compat_data * uart_fdt_find_compatible(phandle_t node, const struct ofw_compat_data *cd) { const struct ofw_compat_data *ocd; for (ocd = cd; ocd->ocd_str != NULL; ocd++) { if (fdt_is_compatible(node, ocd->ocd_str)) return (ocd); } return (NULL); } static uintptr_t uart_fdt_find_by_node(phandle_t node, int class_list) { struct ofw_compat_data **cd; const struct ofw_compat_data *ocd; if (class_list) { SET_FOREACH(cd, uart_fdt_class_set) { ocd = uart_fdt_find_compatible(node, *cd); if ((ocd != NULL) && (ocd->ocd_data != 0)) return (ocd->ocd_data); } } else { SET_FOREACH(cd, uart_fdt_class_and_device_set) { ocd = uart_fdt_find_compatible(node, *cd); if ((ocd != NULL) && (ocd->ocd_data != 0)) return (ocd->ocd_data); } } return (0); } int uart_cpu_getdev(int devtype, struct uart_devinfo *di) { - const char *propnames[] = {"stdout-path", "linux,stdout-path", "stdout", - "stdin-path", "stdin", NULL}; - const char **name; struct uart_class *class; - phandle_t node, chosen; - pcell_t shift, br, rclk; - char *cp; - int err; + bus_space_tag_t bst; + bus_space_handle_t bsh; + u_int shift, rclk; + int br, err; /* Allow overriding the FDT using the environment. */ class = &uart_ns8250_class; err = uart_getenv(devtype, di, class); if (!err) return (0); if (devtype != UART_DEV_CONSOLE) return (ENXIO); - /* Has the user forced a specific device node? */ - cp = kern_getenv("hw.fdt.console"); - if (cp == NULL) { - /* - * Retrieve /chosen/std{in,out}. - */ - node = -1; - if ((chosen = OF_finddevice("/chosen")) != -1) { - for (name = propnames; *name != NULL; name++) { - if (phandle_chosen_propdev(chosen, *name, - &node) == 0) - break; - } - } - if (chosen == -1 || *name == NULL) - node = OF_finddevice("serial0"); /* Last ditch */ - } else { - node = OF_finddevice(cp); - } + err = uart_cpu_fdt_probe(&class, &bst, &bsh, &br, &rclk, &shift); + if (err != 0) + return (err); - if (node == -1) /* Can't find anything */ - return (ENXIO); - /* - * Check old style of UART definition first. Unfortunately, the common - * FDT processing is not possible if we have clock, power domains and - * pinmux stuff. - */ - class = (struct uart_class *)uart_fdt_find_by_node(node, 0); - if (class != NULL) { - if ((err = uart_fdt_get_clock(node, &rclk)) != 0) - return (err); - } else { - /* Check class only linker set */ - class = - (struct uart_class *)uart_fdt_find_by_node(node, 1); - if (class == NULL) - return (ENXIO); - rclk = 0; - } - - /* - * Retrieve serial attributes. - */ - if (uart_fdt_get_shift(node, &shift) != 0) - shift = uart_getregshift(class); - - if (OF_getencprop(node, "current-speed", &br, sizeof(br)) <= 0) - br = 0; - - /* * Finalize configuration. */ di->bas.chan = 0; - di->bas.regshft = (u_int)shift; + di->bas.regshft = shift; di->baudrate = br; - di->bas.rclk = (u_int)rclk; + di->bas.rclk = rclk; di->ops = uart_getops(class); di->databits = 8; di->stopbits = 1; di->parity = UART_PARITY_NONE; + di->bas.bst = bst; + di->bas.bsh = bsh; - err = OF_decode_addr(node, 0, &di->bas.bst, &di->bas.bsh, NULL); uart_bus_space_mem = di->bas.bst; uart_bus_space_io = NULL; return (err); } Index: head/sys/dev/uart/uart_cpu_fdt.h =================================================================== --- head/sys/dev/uart/uart_cpu_fdt.h (revision 303099) +++ head/sys/dev/uart/uart_cpu_fdt.h (revision 303100) @@ -1,56 +1,58 @@ /*- * Copyright 2015 Michal Meloun * 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. * * $FreeBSD$ */ #ifndef _DEV_UART_CPU_FDT_H_ #define _DEV_UART_CPU_FDT_H_ #include #include /* * If your UART driver implements only uart_class and uses uart_cpu_fdt.c * for device instantiation, then use UART_FDT_CLASS_AND_DEVICE for its * declaration */ SET_DECLARE(uart_fdt_class_and_device_set, struct ofw_compat_data ); #define UART_FDT_CLASS_AND_DEVICE(data) \ DATA_SET(uart_fdt_class_and_device_set, data) /* * If your UART driver implements uart_class and custom device layer, * then use UART_FDT_CLASS for its declaration */ SET_DECLARE(uart_fdt_class_set, struct ofw_compat_data ); #define UART_FDT_CLASS(data) \ DATA_SET(uart_fdt_class_set, data) +int uart_cpu_fdt_probe(struct uart_class **, bus_space_tag_t *, + bus_space_handle_t *, int *, u_int *, u_int *); int uart_fdt_get_clock(phandle_t node, pcell_t *cell); int uart_fdt_get_shift(phandle_t node, pcell_t *cell); #endif /* _DEV_UART_CPU_FDT_H_ */