/* * $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ * $FreeBSD: src/sys/dev/puc/puc.c,v 1.3.2.5 2003/04/04 08:42:17 sobomax Exp $ * $DragonFly: src/sys/dev/misc/puc/puc.c,v 1.4 2003/08/27 10:35:18 rob 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. */ /* * 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 #include #include #include #include #include #include #include #include #include #include #include "pucvar.h" #include struct puc_softc { const struct puc_device_description *sc_desc; /* card-global dynamic data */ int barmuxed; int irqrid; struct resource *irqres; void *intr_cookie; int ilr_enabled; bus_space_tag_t ilr_st; bus_space_handle_t ilr_sh; 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) (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) & 0x7f) != 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_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; 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); } 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_TYPE_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; 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("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) { free(pdev, M_DEVBUF); 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) { if (sc->barmuxed) { bus_space_unmap(rman_get_bustag(rle->res), rman_get_bushandle(rle->res), 8); 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); 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_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), 8); 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; 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 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 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);