647 lines
18 KiB
C
647 lines
18 KiB
C
/*-
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* Copyright (c) 2003 M. Warner Losh. All Rights Reserved.
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* Copyright (c) 2000,2001 Jonathan Chen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pci_private.h>
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#include <dev/cardbus/cardbusreg.h>
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#include <dev/cardbus/cardbusvar.h>
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#include <dev/cardbus/cardbus_cis.h>
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#include <dev/pccard/pccard_cis.h>
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#include <dev/pccard/pccardvar.h>
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#include "power_if.h"
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#include "pcib_if.h"
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/* sysctl vars */
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SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
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int cardbus_debug = 0;
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TUNABLE_INT("hw.cardbus.debug", &cardbus_debug);
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SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW,
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&cardbus_debug, 0,
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"CardBus debug");
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int cardbus_cis_debug = 0;
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TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug);
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SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW,
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&cardbus_cis_debug, 0,
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"CardBus CIS debug");
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#define DPRINTF(a) if (cardbus_debug) printf a
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#define DEVPRINTF(x) if (cardbus_debug) device_printf x
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static void cardbus_add_map(device_t cbdev, device_t child, int reg);
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static int cardbus_alloc_resources(device_t cbdev, device_t child);
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static int cardbus_attach(device_t cbdev);
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static int cardbus_attach_card(device_t cbdev);
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static int cardbus_barsort(const void *a, const void *b);
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static int cardbus_detach(device_t cbdev);
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static int cardbus_detach_card(device_t cbdev);
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static void cardbus_device_setup_regs(device_t brdev, int b, int s, int f,
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pcicfgregs *cfg);
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static void cardbus_driver_added(device_t cbdev, driver_t *driver);
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static void cardbus_pickup_maps(device_t cbdev, device_t child);
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static int cardbus_probe(device_t cbdev);
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static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
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uintptr_t *result);
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static void cardbus_release_all_resources(device_t cbdev,
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struct cardbus_devinfo *dinfo);
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static int cardbus_write_ivar(device_t cbdev, device_t child, int which,
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uintptr_t value);
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/*
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* Resource allocation
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*/
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/*
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* Adding a memory/io resource (sans CIS)
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*/
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static void
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cardbus_add_map(device_t cbdev, device_t child, int reg)
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{
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struct cardbus_devinfo *dinfo = device_get_ivars(child);
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struct resource_list_entry *rle;
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uint32_t size;
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uint32_t testval;
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int type;
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SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
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if (rle->rid == reg)
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return;
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}
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if (reg == CARDBUS_ROM_REG)
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testval = CARDBUS_ROM_ADDRMASK;
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else
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testval = ~0;
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pci_write_config(child, reg, testval, 4);
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testval = pci_read_config(child, reg, 4);
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if (testval == ~0 || testval == 0)
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return;
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if ((testval & 1) == 0)
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type = SYS_RES_MEMORY;
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else
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type = SYS_RES_IOPORT;
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size = CARDBUS_MAPREG_MEM_SIZE(testval);
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device_printf(cbdev, "Resource not specified in CIS: id=%x, size=%x\n",
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reg, size);
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resource_list_add(&dinfo->pci.resources, type, reg, 0UL, ~0UL, size);
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}
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static void
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cardbus_pickup_maps(device_t cbdev, device_t child)
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{
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struct cardbus_devinfo *dinfo = device_get_ivars(child);
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int reg;
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/*
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* Try to pick up any resources that was not specified in CIS.
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* Maybe this isn't any longer necessary now that we have fixed
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* CIS parsing and we should filter things here? XXX
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*/
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for (reg = 0; reg < dinfo->pci.cfg.nummaps; reg++)
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cardbus_add_map(cbdev, child, PCIR_BAR(reg));
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}
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static void
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cardbus_do_res(struct resource_list_entry *rle, device_t child, uint32_t start)
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{
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rle->start = start;
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rle->end = start + rle->count - 1;
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pci_write_config(child, rle->rid, rle->start, 4);
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}
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static int
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cardbus_barsort(const void *a, const void *b)
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{
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return ((*(const struct resource_list_entry * const *)b)->count -
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(*(const struct resource_list_entry * const *)a)->count);
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}
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/* XXX this function is too long */
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static int
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cardbus_alloc_resources(device_t cbdev, device_t child)
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{
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struct cardbus_devinfo *dinfo = device_get_ivars(child);
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int count;
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struct resource_list_entry *rle;
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struct resource_list_entry **barlist;
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int tmp;
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uint32_t mem_psize = 0, mem_nsize = 0, io_size = 0;
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struct resource *res;
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uint32_t start,end;
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int rid, flags;
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count = 0;
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SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
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count++;
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}
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if (count == 0)
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return (0);
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barlist = malloc(sizeof(struct resource_list_entry*) * count, M_DEVBUF,
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M_WAITOK);
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count = 0;
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SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
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barlist[count] = rle;
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if (rle->type == SYS_RES_IOPORT) {
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io_size += rle->count;
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} else if (rle->type == SYS_RES_MEMORY) {
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if (dinfo->mprefetchable & BARBIT(rle->rid))
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mem_psize += rle->count;
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else
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mem_nsize += rle->count;
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}
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count++;
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}
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/*
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* We want to allocate the largest resource first, so that our
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* allocated memory is packed.
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*/
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qsort(barlist, count, sizeof(struct resource_list_entry *),
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cardbus_barsort);
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/* Allocate prefetchable memory */
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flags = 0;
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->res == NULL &&
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rle->type == SYS_RES_MEMORY &&
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dinfo->mprefetchable & BARBIT(rle->rid)) {
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flags = rman_make_alignment_flags(rle->count);
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break;
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}
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}
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if (flags > 0) { /* If any prefetchable memory is requested... */
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/*
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* First we allocate one big space for all resources of this
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* type. We do this because our parent, pccbb, needs to open
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* a window to forward all addresses within the window, and
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* it would be best if nobody else has resources allocated
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* within the window.
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* (XXX: Perhaps there might be a better way to do this?)
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*/
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rid = 0;
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res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0,
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(dinfo->mprefetchable & dinfo->mbelow1mb)?0xFFFFF:~0UL,
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mem_psize, flags);
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if (res == NULL) {
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device_printf(cbdev,
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"Can't get memory for prefetch mem\n");
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free(barlist, M_DEVBUF);
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return (EIO);
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}
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start = rman_get_start(res);
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end = rman_get_end(res);
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DEVPRINTF((cbdev, "Prefetchable memory at %x-%x\n", start, end));
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/*
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* Now that we know the region is free, release it and hand it
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* out piece by piece.
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*/
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bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res);
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->type == SYS_RES_MEMORY &&
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dinfo->mprefetchable & BARBIT(rle->rid)) {
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cardbus_do_res(rle, child, start);
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start += rle->count;
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}
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}
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}
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/* Allocate non-prefetchable memory */
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flags = 0;
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->type == SYS_RES_MEMORY &&
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(dinfo->mprefetchable & BARBIT(rle->rid)) == 0) {
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flags = rman_make_alignment_flags(rle->count);
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break;
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}
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}
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if (flags > 0) { /* If any non-prefetchable memory is requested... */
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/*
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* First we allocate one big space for all resources of this
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* type. We do this because our parent, pccbb, needs to open
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* a window to forward all addresses within the window, and
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* it would be best if nobody else has resources allocated
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* within the window.
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* (XXX: Perhaps there might be a better way to do this?)
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*/
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rid = 0;
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res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0,
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((~dinfo->mprefetchable) & dinfo->mbelow1mb)?0xFFFFF:~0UL,
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mem_nsize, flags);
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if (res == NULL) {
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device_printf(cbdev,
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"Can't get memory for non-prefetch mem\n");
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free(barlist, M_DEVBUF);
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return (EIO);
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}
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start = rman_get_start(res);
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end = rman_get_end(res);
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DEVPRINTF((cbdev, "Non-prefetchable memory at %x-%x\n",
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start, end));
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/*
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* Now that we know the region is free, release it and hand it
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* out piece by piece.
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*/
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bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res);
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->type == SYS_RES_MEMORY &&
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(dinfo->mprefetchable & BARBIT(rle->rid)) == 0) {
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cardbus_do_res(rle, child, start);
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start += rle->count;
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}
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}
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}
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/* Allocate IO ports */
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flags = 0;
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->type == SYS_RES_IOPORT) {
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flags = rman_make_alignment_flags(rle->count);
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break;
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}
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}
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if (flags > 0) { /* If any IO port is requested... */
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/*
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* First we allocate one big space for all resources of this
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* type. We do this because our parent, pccbb, needs to open
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* a window to forward all addresses within the window, and
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* it would be best if nobody else has resources allocated
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* within the window.
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* (XXX: Perhaps there might be a better way to do this?)
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*/
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rid = 0;
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res = bus_alloc_resource(cbdev, SYS_RES_IOPORT, &rid, 0,
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(dinfo->ibelow1mb)?0xFFFFF:~0UL, io_size, flags);
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if (res == NULL) {
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device_printf(cbdev,
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"Can't get memory for IO ports\n");
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free(barlist, M_DEVBUF);
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return (EIO);
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}
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start = rman_get_start(res);
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end = rman_get_end(res);
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DEVPRINTF((cbdev, "IO port at %x-%x\n", start, end));
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/*
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* Now that we know the region is free, release it and hand it
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* out piece by piece.
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*/
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bus_release_resource(cbdev, SYS_RES_IOPORT, rid, res);
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for (tmp = 0; tmp < count; tmp++) {
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rle = barlist[tmp];
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if (rle->type == SYS_RES_IOPORT) {
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cardbus_do_res(rle, child, start);
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start += rle->count;
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}
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}
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}
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/* Allocate IRQ */
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rid = 0;
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res = bus_alloc_resource_any(cbdev, SYS_RES_IRQ, &rid, RF_SHAREABLE);
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if (res == NULL) {
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device_printf(cbdev, "Can't get memory for irq\n");
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free(barlist, M_DEVBUF);
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return (EIO);
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}
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start = rman_get_start(res);
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end = rman_get_end(res);
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bus_release_resource(cbdev, SYS_RES_IRQ, rid, res);
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resource_list_add(&dinfo->pci.resources, SYS_RES_IRQ, rid, start, end,
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1);
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dinfo->pci.cfg.intline = rman_get_start(res);
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pci_write_config(child, PCIR_INTLINE, rman_get_start(res), 1);
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free(barlist, M_DEVBUF);
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return (0);
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}
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/************************************************************************/
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/* Probe/Attach */
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/************************************************************************/
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static int
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cardbus_probe(device_t cbdev)
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{
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device_set_desc(cbdev, "CardBus bus");
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return 0;
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}
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static int
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cardbus_attach(device_t cbdev)
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{
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return 0;
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}
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static int
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cardbus_detach(device_t cbdev)
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{
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cardbus_detach_card(cbdev);
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return 0;
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}
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static int
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cardbus_suspend(device_t self)
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{
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cardbus_detach_card(self);
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return (0);
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}
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static int
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cardbus_resume(device_t self)
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{
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return (0);
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}
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/************************************************************************/
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/* Attach/Detach card */
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/************************************************************************/
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static void
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cardbus_device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg)
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{
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PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE,
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pci_get_irq(device_get_parent(brdev)), 1);
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cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1);
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PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1);
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cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1);
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PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1);
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cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1);
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PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1);
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cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1);
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PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1);
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cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1);
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}
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static int
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cardbus_attach_card(device_t cbdev)
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{
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device_t brdev = device_get_parent(cbdev);
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device_t child;
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int cardattached = 0;
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int bus, slot, func;
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cardbus_detach_card(cbdev); /* detach existing cards */
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POWER_ENABLE_SOCKET(brdev, cbdev);
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bus = pcib_get_bus(cbdev);
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/* For each function, set it up and try to attach a driver to it */
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for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) {
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int cardbusfunchigh = 0;
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for (func = 0; func <= cardbusfunchigh; func++) {
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struct cardbus_devinfo *dinfo;
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dinfo = (struct cardbus_devinfo *)
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pci_read_device(brdev, bus, slot, func,
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sizeof(struct cardbus_devinfo));
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if (dinfo == NULL)
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continue;
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if (dinfo->pci.cfg.mfdev)
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cardbusfunchigh = CARDBUS_FUNCMAX;
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cardbus_device_setup_regs(brdev, bus, slot, func,
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&dinfo->pci.cfg);
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child = device_add_child(cbdev, NULL, -1);
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if (child == NULL) {
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DEVPRINTF((cbdev, "Cannot add child!\n"));
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pci_freecfg((struct pci_devinfo *)dinfo);
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continue;
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}
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dinfo->pci.cfg.dev = child;
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resource_list_init(&dinfo->pci.resources);
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device_set_ivars(child, dinfo);
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if (cardbus_do_cis(cbdev, child) != 0) {
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DEVPRINTF((cbdev, "Can't parse cis\n"));
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pci_freecfg((struct pci_devinfo *)dinfo);
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continue;
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}
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cardbus_pickup_maps(cbdev, child);
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cardbus_alloc_resources(cbdev, child);
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pci_print_verbose(&dinfo->pci);
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if (device_probe_and_attach(child) != 0)
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cardbus_release_all_resources(cbdev, dinfo);
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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) {
|
|
free(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);
|
|
free(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);
|
|
if (device_probe_and_attach(dev) != 0)
|
|
cardbus_release_all_resources(cbdev, dinfo);
|
|
}
|
|
free(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);
|