/*- * Copyright (c) 2003 M. Warner Losh. All Rights Reserved. * Copyright (c) 2000,2001 Jonathan Chen. 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: src/sys/dev/cardbus/cardbus.c,v 1.28 2002/11/27 17:30:41 imp Exp $ * $DragonFly: src/sys/dev/pccard/cardbus/cardbus.c,v 1.13 2008/01/11 10:53:46 sephe Exp $ */ /* * Cardbus Bus Driver * * much of the bus code was stolen directly from sys/pci/pci.c * (Copyright (c) 1997, Stefan Esser ) * * Written by Jonathan Chen */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "power_if.h" #include "pcib_if.h" /* sysctl vars */ SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters"); int cardbus_debug = 0; TUNABLE_INT("hw.cardbus.debug", &cardbus_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW, &cardbus_debug, 0, "CardBus debug"); int cardbus_cis_debug = 0; TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW, &cardbus_cis_debug, 0, "CardBus CIS debug"); #define DPRINTF(a) if (cardbus_debug) kprintf a #define DEVPRINTF(x) if (cardbus_debug) device_printf x static void cardbus_add_map(device_t cbdev, device_t child, int reg); static int cardbus_alloc_resources(device_t cbdev, device_t child); static int cardbus_attach(device_t cbdev); static int cardbus_attach_card(device_t cbdev); static int cardbus_barsort(const void *a, const void *b); static int cardbus_detach(device_t cbdev); static int cardbus_detach_card(device_t cbdev); static void cardbus_device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg); static void cardbus_driver_added(device_t cbdev, driver_t *driver); static void cardbus_pickup_maps(device_t cbdev, device_t child); static int cardbus_probe(device_t cbdev); static int cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result); static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo); static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value); /* * Resource allocation */ /* * Adding a memory/io resource (sans CIS) */ static void cardbus_add_map(device_t cbdev, device_t child, int reg) { struct cardbus_devinfo *dinfo = device_get_ivars(child); struct resource_list_entry *rle; uint32_t size; uint32_t testval; int type; SLIST_FOREACH(rle, &dinfo->pci.resources, link) { if (rle->rid == reg) return; } if (reg == CARDBUS_ROM_REG) testval = CARDBUS_ROM_ADDRMASK; else testval = ~0; pci_write_config(child, reg, testval, 4); testval = pci_read_config(child, reg, 4); if (testval == ~0 || testval == 0) return; if ((testval & 1) == 0) type = SYS_RES_MEMORY; else type = SYS_RES_IOPORT; size = CARDBUS_MAPREG_MEM_SIZE(testval); if (bootverbose) { device_printf(cbdev, "Resource not specified in CIS: " "id=%x, size=%x\n", reg, size); } resource_list_add(&dinfo->pci.resources, type, reg, 0UL, ~0UL, size); } static void cardbus_pickup_maps(device_t cbdev, device_t child) { struct cardbus_devinfo *dinfo = device_get_ivars(child); int reg; /* * Try to pick up any resources that was not specified in CIS. * Maybe this isn't any longer necessary now that we have fixed * CIS parsing and we should filter things here? XXX */ for (reg = 0; reg < dinfo->pci.cfg.nummaps; reg++) cardbus_add_map(cbdev, child, PCIR_BAR(reg)); } static void cardbus_do_res(struct resource_list_entry *rle, device_t child, uint32_t start) { rle->start = start; rle->end = start + rle->count - 1; pci_write_config(child, rle->rid, rle->start, 4); } static int cardbus_barsort(const void *a, const void *b) { return ((*(const struct resource_list_entry * const *)b)->count - (*(const struct resource_list_entry * const *)a)->count); } /* XXX this function is too long */ static int cardbus_alloc_resources(device_t cbdev, device_t child) { struct cardbus_devinfo *dinfo = device_get_ivars(child); int count; struct resource_list_entry *rle; struct resource_list_entry **barlist; int tmp; uint32_t mem_psize = 0, mem_nsize = 0, io_size = 0; struct resource *res; uint32_t start,end; int rid, flags; count = 0; SLIST_FOREACH(rle, &dinfo->pci.resources, link) { count++; } if (count == 0) return (0); barlist = kmalloc(sizeof(struct resource_list_entry*) * count, M_DEVBUF, M_WAITOK); count = 0; SLIST_FOREACH(rle, &dinfo->pci.resources, link) { barlist[count] = rle; if (rle->type == SYS_RES_IOPORT) { io_size += rle->count; } else if (rle->type == SYS_RES_MEMORY) { if (dinfo->mprefetchable & BARBIT(rle->rid)) mem_psize += rle->count; else mem_nsize += rle->count; } count++; } /* * We want to allocate the largest resource first, so that our * allocated memory is packed. */ kqsort(barlist, count, sizeof(struct resource_list_entry *), cardbus_barsort); /* Allocate prefetchable memory */ flags = 0; for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->res == NULL && rle->type == SYS_RES_MEMORY && dinfo->mprefetchable & BARBIT(rle->rid)) { flags = rman_make_alignment_flags(rle->count); break; } } if (flags > 0) { /* If any prefetchable memory is requested... */ /* * First we allocate one big space for all resources of this * type. We do this because our parent, pccbb, needs to open * a window to forward all addresses within the window, and * it would be best if nobody else has resources allocated * within the window. * (XXX: Perhaps there might be a better way to do this?) */ rid = 0; res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0, (dinfo->mprefetchable & dinfo->mbelow1mb)?0xFFFFF:~0UL, mem_psize, flags); if (res == NULL) { device_printf(cbdev, "Can't get memory for prefetch mem\n"); kfree(barlist, M_DEVBUF); return (EIO); } start = rman_get_start(res); end = rman_get_end(res); DEVPRINTF((cbdev, "Prefetchable memory at %x-%x\n", start, end)); /* * Now that we know the region is free, release it and hand it * out piece by piece. */ bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res); for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->type == SYS_RES_MEMORY && dinfo->mprefetchable & BARBIT(rle->rid)) { cardbus_do_res(rle, child, start); start += rle->count; } } } /* Allocate non-prefetchable memory */ flags = 0; for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->type == SYS_RES_MEMORY && (dinfo->mprefetchable & BARBIT(rle->rid)) == 0) { flags = rman_make_alignment_flags(rle->count); break; } } if (flags > 0) { /* If any non-prefetchable memory is requested... */ /* * First we allocate one big space for all resources of this * type. We do this because our parent, pccbb, needs to open * a window to forward all addresses within the window, and * it would be best if nobody else has resources allocated * within the window. * (XXX: Perhaps there might be a better way to do this?) */ rid = 0; res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0, ((~dinfo->mprefetchable) & dinfo->mbelow1mb)?0xFFFFF:~0UL, mem_nsize, flags); if (res == NULL) { device_printf(cbdev, "Can't get memory for non-prefetch mem\n"); kfree(barlist, M_DEVBUF); return (EIO); } start = rman_get_start(res); end = rman_get_end(res); DEVPRINTF((cbdev, "Non-prefetchable memory at %x-%x\n", start, end)); /* * Now that we know the region is free, release it and hand it * out piece by piece. */ bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res); for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->type == SYS_RES_MEMORY && (dinfo->mprefetchable & BARBIT(rle->rid)) == 0) { cardbus_do_res(rle, child, start); start += rle->count; } } } /* Allocate IO ports */ flags = 0; for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->type == SYS_RES_IOPORT) { flags = rman_make_alignment_flags(rle->count); break; } } if (flags > 0) { /* If any IO port is requested... */ /* * First we allocate one big space for all resources of this * type. We do this because our parent, pccbb, needs to open * a window to forward all addresses within the window, and * it would be best if nobody else has resources allocated * within the window. * (XXX: Perhaps there might be a better way to do this?) */ rid = 0; res = bus_alloc_resource(cbdev, SYS_RES_IOPORT, &rid, 0, (dinfo->ibelow1mb)?0xFFFFF:~0UL, io_size, flags); if (res == NULL) { device_printf(cbdev, "Can't get memory for IO ports\n"); kfree(barlist, M_DEVBUF); return (EIO); } start = rman_get_start(res); end = rman_get_end(res); DEVPRINTF((cbdev, "IO port at %x-%x\n", start, end)); /* * Now that we know the region is free, release it and hand it * out piece by piece. */ bus_release_resource(cbdev, SYS_RES_IOPORT, rid, res); for (tmp = 0; tmp < count; tmp++) { rle = barlist[tmp]; if (rle->type == SYS_RES_IOPORT) { cardbus_do_res(rle, child, start); start += rle->count; } } } /* Allocate IRQ */ rid = 0; res = bus_alloc_resource_any(cbdev, SYS_RES_IRQ, &rid, RF_SHAREABLE); if (res == NULL) { device_printf(cbdev, "Can't get memory for irq\n"); kfree(barlist, M_DEVBUF); return (EIO); } start = rman_get_start(res); end = rman_get_end(res); bus_release_resource(cbdev, SYS_RES_IRQ, rid, res); resource_list_add(&dinfo->pci.resources, SYS_RES_IRQ, rid, start, end, 1); dinfo->pci.cfg.intline = start; pci_write_config(child, PCIR_INTLINE, start, 1); kfree(barlist, M_DEVBUF); return (0); } /************************************************************************/ /* Probe/Attach */ /************************************************************************/ static int cardbus_probe(device_t cbdev) { device_set_desc(cbdev, "CardBus bus"); return 0; } static int cardbus_attach(device_t cbdev) { return 0; } static int cardbus_detach(device_t cbdev) { cardbus_detach_card(cbdev); return 0; } static int cardbus_suspend(device_t self) { cardbus_detach_card(self); return (0); } static int cardbus_resume(device_t self) { return (0); } /************************************************************************/ /* Attach/Detach card */ /************************************************************************/ static void cardbus_device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg) { PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE, pci_get_irq(device_get_parent(brdev)), 1); cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1); cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1); cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1); cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1); PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1); cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1); } static int cardbus_attach_card(device_t cbdev) { device_t brdev = device_get_parent(cbdev); device_t child; int cardattached = 0; int bus, slot, func; cardbus_detach_card(cbdev); /* detach existing cards */ POWER_ENABLE_SOCKET(brdev, cbdev); bus = pcib_get_bus(brdev); /* For each function, set it up and try to attach a driver to it */ for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) { int cardbusfunchigh = 0; for (func = 0; func <= cardbusfunchigh; func++) { struct cardbus_devinfo *dinfo; dinfo = (struct cardbus_devinfo *) pci_read_device(brdev, bus, slot, func, sizeof(struct cardbus_devinfo)); if (dinfo == NULL) continue; if (dinfo->pci.cfg.mfdev) cardbusfunchigh = CARDBUS_FUNCMAX; cardbus_device_setup_regs(brdev, bus, slot, func, &dinfo->pci.cfg); child = device_add_child(cbdev, NULL, -1); if (child == NULL) { DEVPRINTF((cbdev, "Cannot add child!\n")); pci_freecfg((struct pci_devinfo *)dinfo); continue; } dinfo->pci.cfg.dev = child; resource_list_init(&dinfo->pci.resources); device_set_ivars(child, dinfo); if (cardbus_do_cis(cbdev, child) != 0) { DEVPRINTF((cbdev, "Can't parse cis\n")); pci_freecfg((struct pci_devinfo *)dinfo); continue; } cardbus_pickup_maps(cbdev, child); cardbus_alloc_resources(cbdev, child); pci_print_verbose(&dinfo->pci); if (device_probe_and_attach(child) != 0) cardbus_release_all_resources(cbdev, dinfo); else cardattached++; } } if (cardattached > 0) return (0); POWER_DISABLE_SOCKET(brdev, cbdev); return (ENOENT); } static int cardbus_detach_card(device_t cbdev) { int numdevs; device_t *devlist; int tmp; int err = 0; device_get_children(cbdev, &devlist, &numdevs); if (numdevs == 0) { kfree(devlist, M_TEMP); return (ENOENT); } for (tmp = 0; tmp < numdevs; tmp++) { struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]); int status = device_get_state(devlist[tmp]); if (dinfo->pci.cfg.dev != devlist[tmp]) device_printf(cbdev, "devinfo dev mismatch\n"); if (status == DS_ATTACHED || status == DS_BUSY) device_detach(devlist[tmp]); cardbus_release_all_resources(cbdev, dinfo); device_delete_child(cbdev, devlist[tmp]); pci_freecfg((struct pci_devinfo *)dinfo); } POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); kfree(devlist, M_TEMP); return (err); } static void cardbus_driver_added(device_t cbdev, driver_t *driver) { int numdevs; device_t *devlist; device_t dev; int i; struct cardbus_devinfo *dinfo; DEVICE_IDENTIFY(driver, cbdev); device_get_children(cbdev, &devlist, &numdevs); /* * If there are no drivers attached, but there are children, * then power the card up. */ for (i = 0; i < numdevs; i++) { dev = devlist[i]; if (device_get_state(dev) != DS_NOTPRESENT) break; } if (i > 0 && i == numdevs) POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev); for (i = 0; i < numdevs; i++) { dev = devlist[i]; if (device_get_state(dev) != DS_NOTPRESENT) continue; dinfo = device_get_ivars(dev); pci_print_verbose(&dinfo->pci); resource_list_init(&dinfo->pci.resources); cardbus_do_cis(cbdev, dev); cardbus_pickup_maps(cbdev, dev); cardbus_alloc_resources(cbdev, dev); if (device_probe_and_attach(dev) != 0) cardbus_release_all_resources(cbdev, dinfo); } kfree(devlist, M_TEMP); } static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo) { struct resource_list_entry *rle; /* Free all allocated resources */ SLIST_FOREACH(rle, &dinfo->pci.resources, link) { if (rle->res) { if (rman_get_device(rle->res) != cbdev) device_printf(cbdev, "release_all_resource: " "Resource still owned by child, oops. " "(type=%d, rid=%d, addr=%lx)\n", rle->type, rle->rid, rman_get_start(rle->res)); BUS_RELEASE_RESOURCE(device_get_parent(cbdev), cbdev, rle->type, rle->rid, rle->res); rle->res = NULL; /* * zero out config so the card won't acknowledge * access to the space anymore */ pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4); } } resource_list_free(&dinfo->pci.resources); } /************************************************************************/ /* Other Bus Methods */ /************************************************************************/ static int cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result) { struct cardbus_devinfo *dinfo; pcicfgregs *cfg; dinfo = device_get_ivars(child); cfg = &dinfo->pci.cfg; switch (which) { case PCI_IVAR_ETHADDR: /* * The generic accessor doesn't deal with failure, so * we set the return value, then return an error. */ if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) { *((uint8_t **) result) = dinfo->funce.lan.nid; break; } *((uint8_t **) result) = NULL; return (EINVAL); default: return (pci_read_ivar(cbdev, child, which, result)); } return 0; } static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value) { return(pci_write_ivar(cbdev, child, which, value)); } static device_method_t cardbus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, cardbus_probe), DEVMETHOD(device_attach, cardbus_attach), DEVMETHOD(device_detach, cardbus_detach), DEVMETHOD(device_suspend, cardbus_suspend), DEVMETHOD(device_resume, cardbus_resume), /* Bus interface */ DEVMETHOD(bus_read_ivar, cardbus_read_ivar), DEVMETHOD(bus_write_ivar, cardbus_write_ivar), DEVMETHOD(bus_driver_added, cardbus_driver_added), /* Card Interface */ DEVMETHOD(card_attach_card, cardbus_attach_card), DEVMETHOD(card_detach_card, cardbus_detach_card), {0,0} }; DECLARE_CLASS(pci_driver); DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods, 0, pci_driver); static devclass_t cardbus_devclass; DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0); MODULE_VERSION(cardbus, 1);