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-rw-r--r--sys/dev/puc/puc.c620
1 files changed, 620 insertions, 0 deletions
diff --git a/sys/dev/puc/puc.c b/sys/dev/puc/puc.c
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index 000000000000..86e2a0caed52
--- /dev/null
+++ b/sys/dev/puc/puc.c
@@ -0,0 +1,620 @@
+/* $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, 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.
+ */
+
+/*-
+ * 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.
+ */
+
+#define __RMAN_RESOURCE_VISIBLE /* Shouldn't be there */
+#include "opt_puc.h"
+#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>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+
+#define PUC_ENTRAILS 1
+#include <dev/puc/pucvar.h>
+
+struct puc_device {
+ struct resource_list resources;
+ int port;
+ int regshft;
+ u_int serialfreq;
+ u_int subtype;
+};
+
+static void puc_intr(void *arg);
+
+static int puc_find_free_unit(char *);
+#ifdef PUC_DEBUG
+static void puc_print_resource_list(struct resource_list *);
+#endif
+
+devclass_t puc_devclass;
+
+static int
+puc_port_bar_index(struct puc_softc *sc, int bar)
+{
+ int i;
+
+ for (i = 0; i < PUC_MAX_BAR; i += 1) {
+ if (!sc->sc_bar_mappings[i].used)
+ break;
+ if (sc->sc_bar_mappings[i].bar == bar)
+ return (i);
+ }
+ if (i == PUC_MAX_BAR) {
+ printf("%s: out of bars!\n", __func__);
+ return (-1);
+ }
+ sc->sc_bar_mappings[i].bar = bar;
+ sc->sc_bar_mappings[i].used = 1;
+ return (i);
+}
+
+static int
+puc_probe_ilr(struct puc_softc *sc, struct resource *res)
+{
+ u_char t1, t2;
+ int i;
+
+ switch (sc->sc_desc.ilr_type) {
+ case PUC_ILR_TYPE_DIGI:
+ sc->ilr_st = rman_get_bustag(res);
+ sc->ilr_sh = rman_get_bushandle(res);
+ for (i = 0; i < 2 && sc->sc_desc.ilr_offset[i] != 0; i++) {
+ t1 = bus_space_read_1(sc->ilr_st, sc->ilr_sh,
+ sc->sc_desc.ilr_offset[i]);
+ t1 = ~t1;
+ bus_space_write_1(sc->ilr_st, sc->ilr_sh,
+ sc->sc_desc.ilr_offset[i], t1);
+ t2 = bus_space_read_1(sc->ilr_st, sc->ilr_sh,
+ sc->sc_desc.ilr_offset[i]);
+ if (t2 == t1)
+ return (0);
+ }
+ return (1);
+
+ default:
+ break;
+ }
+ return (0);
+}
+
+int
+puc_attach(device_t dev, const struct puc_device_description *desc)
+{
+ char *typestr;
+ int bidx, childunit, i, irq_setup, ressz, rid, type;
+ struct puc_softc *sc;
+ struct puc_device *pdev;
+ struct resource *res;
+ struct resource_list_entry *rle;
+ bus_space_handle_t bh;
+
+ if (desc == NULL)
+ return (ENXIO);
+
+ sc = (struct puc_softc *)device_get_softc(dev);
+ bzero(sc, sizeof(*sc));
+ sc->sc_desc = *desc;
+
+#ifdef PUC_DEBUG
+ bootverbose = 1;
+
+ printf("puc: name: %s\n", sc->sc_desc.name);
+#endif
+ rid = 0;
+ res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
+ 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);
+ if (irq_setup == 0)
+ sc->fastintr = INTR_FAST;
+ else
+ irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res,
+ INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie);
+#else
+ irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res,
+ INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie);
+#endif
+ if (irq_setup != 0)
+ return (ENXIO);
+
+ rid = 0;
+ for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
+ if (i > 0 && rid == sc->sc_desc.ports[i].bar)
+ sc->barmuxed = 1;
+ rid = sc->sc_desc.ports[i].bar;
+ bidx = puc_port_bar_index(sc, rid);
+
+ if (bidx < 0 || sc->sc_bar_mappings[bidx].res != NULL)
+ continue;
+
+ type = (sc->sc_desc.ports[i].flags & PUC_FLAGS_MEMORY)
+ ? SYS_RES_MEMORY : SYS_RES_IOPORT;
+
+ res = bus_alloc_resource_any(dev, type, &rid,
+ RF_ACTIVE);
+ if (res == NULL &&
+ sc->sc_desc.ports[i].flags & PUC_FLAGS_ALTRES) {
+ type = (type == SYS_RES_IOPORT)
+ ? SYS_RES_MEMORY : SYS_RES_IOPORT;
+ res = bus_alloc_resource_any(dev, type, &rid,
+ RF_ACTIVE);
+ }
+ if (res == NULL) {
+ device_printf(dev, "could not get resource\n");
+ continue;
+ }
+ sc->sc_bar_mappings[bidx].type = type;
+ sc->sc_bar_mappings[bidx].res = res;
+
+ if (sc->sc_desc.ilr_type != PUC_ILR_TYPE_NONE) {
+ sc->ilr_enabled = puc_probe_ilr(sc, res);
+ if (sc->ilr_enabled)
+ device_printf(dev, "ILR enabled\n");
+ else
+ device_printf(dev, "ILR disabled\n");
+ }
+#ifdef PUC_DEBUG
+ printf("%s rid %d bst %lx, start %lx, end %lx\n",
+ (type == SYS_RES_MEMORY) ? "memory" : "port", rid,
+ (u_long)rman_get_bustag(res), (u_long)rman_get_start(res),
+ (u_long)rman_get_end(res));
+#endif
+ }
+
+ if (desc->init != NULL) {
+ i = desc->init(sc);
+ if (i != 0)
+ return (i);
+ }
+
+ for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
+ rid = sc->sc_desc.ports[i].bar;
+ bidx = puc_port_bar_index(sc, rid);
+ if (bidx < 0 || sc->sc_bar_mappings[bidx].res == NULL)
+ continue;
+
+ switch (sc->sc_desc.ports[i].type & ~PUC_PORT_SUBTYPE_MASK) {
+ case PUC_PORT_TYPE_COM:
+ typestr = "sio";
+ break;
+ case PUC_PORT_TYPE_LPT:
+ typestr = "ppc";
+ break;
+ case PUC_PORT_TYPE_UART:
+ typestr = "uart";
+ break;
+ default:
+ continue;
+ }
+ switch (sc->sc_desc.ports[i].type & PUC_PORT_SUBTYPE_MASK) {
+ case PUC_PORT_UART_SAB82532:
+ ressz = 64;
+ break;
+ case PUC_PORT_UART_Z8530:
+ ressz = 2;
+ break;
+ default:
+ ressz = 8;
+ break;
+ }
+ 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 or MEMORY resource */
+ res = sc->sc_bar_mappings[bidx].res;
+ type = sc->sc_bar_mappings[bidx].type;
+ resource_list_add(&pdev->resources, type, 0,
+ rman_get_start(res) + sc->sc_desc.ports[i].offset,
+ rman_get_start(res) + sc->sc_desc.ports[i].offset
+ + ressz - 1, ressz);
+ rle = resource_list_find(&pdev->resources, type, 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) {
+ free(pdev, M_DEVBUF);
+ return (ENOMEM);
+ }
+
+ rman_set_start(rle->res, rman_get_start(res) +
+ sc->sc_desc.ports[i].offset);
+ rman_set_end(rle->res, rman_get_start(rle->res) +
+ ressz - 1);
+ rman_set_bustag(rle->res, rman_get_bustag(res));
+ bus_space_subregion(rman_get_bustag(rle->res),
+ rman_get_bushandle(res),
+ sc->sc_desc.ports[i].offset, ressz,
+ &bh);
+ rman_set_bushandle(rle->res, bh);
+ }
+
+ pdev->port = i + 1;
+ pdev->serialfreq = sc->sc_desc.ports[i].serialfreq;
+ pdev->subtype = sc->sc_desc.ports[i].type &
+ PUC_PORT_SUBTYPE_MASK;
+ pdev->regshft = sc->sc_desc.ports[i].regshft;
+
+ childunit = puc_find_free_unit(typestr);
+ if (childunit < 0 && strcmp(typestr, "uart") != 0) {
+ typestr = "uart";
+ childunit = puc_find_free_unit(typestr);
+ }
+ sc->sc_ports[i].dev = device_add_child(dev, typestr,
+ childunit);
+ if (sc->sc_ports[i].dev == NULL) {
+ if (sc->barmuxed) {
+ bus_space_unmap(rman_get_bustag(rle->res),
+ rman_get_bushandle(rle->res), ressz);
+ free(rle->res, M_DEVBUF);
+ free(pdev, M_DEVBUF);
+ }
+ continue;
+ }
+ device_set_ivars(sc->sc_ports[i].dev, pdev);
+ device_set_desc(sc->sc_ports[i].dev, sc->sc_desc.name);
+#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);
+ puc_print_resource_list(&pdev->resources);
+#endif
+ device_set_flags(sc->sc_ports[i].dev,
+ sc->sc_desc.ports[i].flags);
+ if (device_probe_and_attach(sc->sc_ports[i].dev) != 0) {
+ if (sc->barmuxed) {
+ bus_space_unmap(rman_get_bustag(rle->res),
+ rman_get_bushandle(rle->res), ressz);
+ free(rle->res, M_DEVBUF);
+ free(pdev, M_DEVBUF);
+ }
+ }
+ }
+
+#ifdef PUC_DEBUG
+ bootverbose = 0;
+#endif
+ return (0);
+}
+
+static u_int32_t
+puc_ilr_read(struct puc_softc *sc)
+{
+ u_int32_t mask;
+ int i;
+
+ mask = 0;
+ switch (sc->sc_desc.ilr_type) {
+ case PUC_ILR_TYPE_DIGI:
+ for (i = 1; i >= 0 && sc->sc_desc.ilr_offset[i] != 0; i--) {
+ mask = (mask << 8) | (bus_space_read_1(sc->ilr_st,
+ sc->ilr_sh, sc->sc_desc.ilr_offset[i]) & 0xff);
+ }
+ break;
+
+ default:
+ mask = 0xffffffff;
+ break;
+ }
+ return (mask);
+}
+
+/*
+ * This is an interrupt handler. For boards that can't tell us which
+ * device generated the interrupt it just calls all the registered
+ * handlers sequencially, but for boards that can tell us which
+ * device(s) generated the interrupt it calls only handlers for devices
+ * that actually generated the interrupt.
+ */
+static void
+puc_intr(void *arg)
+{
+ int i;
+ u_int32_t ilr_mask;
+ struct puc_softc *sc;
+
+ sc = (struct puc_softc *)arg;
+ ilr_mask = sc->ilr_enabled ? puc_ilr_read(sc) : 0xffffffff;
+ for (i = 0; i < PUC_MAX_PORTS; i++)
+ if (sc->sc_ports[i].ihand != NULL &&
+ ((ilr_mask >> i) & 0x00000001))
+ (sc->sc_ports[i].ihand)(sc->sc_ports[i].ihandarg);
+}
+
+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)
+{
+#if 0
+ struct resource_list_entry *rle;
+
+ printf("print_resource_list: rl %p\n", rl);
+ SLIST_FOREACH(rle, rl, link)
+ printf(" type %x, rid %x start %lx end %lx count %lx\n",
+ rle->type, rle->rid, rle->start, rle->end, rle->count);
+ printf("print_resource_list: end.\n");
+#endif
+}
+#endif
+
+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;
+ device_t my_child;
+
+ /*
+ * in the case of a child of child we need to find our immediate child
+ */
+ for (my_child = child; device_get_parent(my_child) != dev;
+ my_child = device_get_parent(my_child));
+
+ pdev = device_get_ivars(my_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) {
+#ifdef PUC_DEBUG
+ printf("found rle, %lx, %lx, %lx\n", rle->start, rle->end,
+ rle->count);
+#endif
+ retval = rle->res;
+ }
+#ifdef PUC_DEBUG
+ else
+ printf("oops rle is gone\n");
+#endif
+
+ return (retval);
+}
+
+int
+puc_release_resource(device_t dev, device_t child, int type, int rid,
+ struct resource *res)
+{
+ return (0);
+}
+
+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);
+}
+
+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);
+ if ((flags & INTR_FAST) != sc->fastintr)
+ return (ENXIO);
+ 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);
+}
+
+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);
+}
+
+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;
+ case PUC_IVAR_PORT:
+ *result = pdev->port;
+ break;
+ case PUC_IVAR_REGSHFT:
+ *result = pdev->regshft;
+ break;
+ case PUC_IVAR_SUBTYPE:
+ *result = pdev->subtype;
+ break;
+ default:
+ return (ENOENT);
+ }
+ return (0);
+}
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