2ca7489887
o ToPIC is happy with two cards now, even when the two cards are modems. o Fix (all?) hangs on boot when power is applied to the card. I suspect that this will make the Ricoh bridges happier and also make a lot of VAIO owners happy (confirm to me in private email please :-). o All Cardbus bridges should now support 3.3V, X.XV and Y.YV cards, to the extent that the underlying hardware supports such cards. (X.X and Y.Y haven't been assigned values yet :-). o Better 3.3V support for Ricoh ISA bridges. How: o Don't mess with the power register when scanning the cards. It is unnecessary and causes BADVcc conditions on many chipsets. These in turn can cause an interrupt storm. o Make pcic_disable reset the slot's voltage. o Move initializing voltage for the slot until after it has been disabled. o Fix a lot of issues with the pcic_cardbus_power routine. We now properly enable the card and take it out of reset after a power change. o When detecting the card's voltage, if we're in a BadVcc state, direct the bridge to rescan the card for what it supports. (we might need to in the future set the power register to 0 before doing this). o Don't preserve CLKSTOP. need to revisit this. o Better support for Ricoh ISA bridges for 3.3V cards. o Don't write to PCIC_POWER directly as offten, but instead go through the pcic_power interface. o All cardbus bridges now default to use cardbus power control. o Add misc register definitions. o remove some (now) bogus comments. Extra Special Thanks To: Scott Lamber for his kind and generous loan of a Toshiba laptop with a ToPIC 100 in it for my use.
695 lines
17 KiB
C
695 lines
17 KiB
C
/*
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* pccard.c - Interface code for PC-CARD controllers.
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*
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* June 1995, Andrew McRae (andrew@mega.com.au)
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*-------------------------------------------------------------------------
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*
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* Copyright (c) 2001 M. Warner Losh. All rights reserved.
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* Copyright (c) 1995 Andrew McRae. 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#include <sys/conf.h>
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#include <sys/uio.h>
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#include <sys/poll.h>
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#include <sys/bus.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <pccard/cardinfo.h>
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#include <pccard/driver.h>
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#include <pccard/slot.h>
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#include <pccard/pccard_nbk.h>
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#include <machine/md_var.h>
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#define MIN(a,b) ((a)<(b)?(a):(b))
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static int allocate_driver(struct slot *, struct dev_desc *);
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static void inserted(void *);
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static void disable_slot(struct slot *);
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static void disable_slot_to(struct slot *);
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static void power_off_slot(void *);
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/*
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* The driver interface for read/write uses a block
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* of memory in the ISA I/O memory space allocated via
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* an ioctl setting.
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*
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* Now that we have different bus attachments, we should really
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* use a better algorythm to allocate memory.
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*/
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static unsigned long pccard_mem; /* Physical memory */
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static unsigned char *pccard_kmem; /* Kernel virtual address */
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static struct resource *pccard_mem_res;
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static int pccard_mem_rid;
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static d_open_t crdopen;
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static d_close_t crdclose;
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static d_read_t crdread;
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static d_write_t crdwrite;
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static d_ioctl_t crdioctl;
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static d_poll_t crdpoll;
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#define CDEV_MAJOR 50
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static struct cdevsw crd_cdevsw = {
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/* open */ crdopen,
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/* close */ crdclose,
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/* read */ crdread,
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/* write */ crdwrite,
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/* ioctl */ crdioctl,
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/* poll */ crdpoll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "crd",
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/* maj */ CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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};
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/*
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* Power off the slot.
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* (doing it immediately makes the removal of some cards unstable)
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*/
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static void
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power_off_slot(void *arg)
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{
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struct slot *slt = (struct slot *)arg;
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int s;
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/*
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* The following will generate an interrupt. So, to hold off
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* the interrupt unitl after disable runs so that we can get rid
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* rid of the interrupt before it becomes unsafe to touch the
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* device.
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*
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* XXX In current, the spl stuff is a nop.
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*/
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s = splhigh();
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/* Power off the slot. */
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slt->pwr_off_pending = 0;
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slt->ctrl->disable(slt);
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splx(s);
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}
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/*
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* disable_slot - Disables the slot by removing
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* the power and unmapping the I/O
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*/
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static void
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disable_slot(struct slot *slt)
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{
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device_t pccarddev;
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device_t *kids;
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int nkids;
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int i;
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int ret;
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/*
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* Note that a race condition is possible here; if a
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* driver is accessing the device and it is removed, then
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* all bets are off...
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*/
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pccarddev = slt->dev;
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device_get_children(pccarddev, &kids, &nkids);
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for (i = 0; i < nkids; i++) {
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if ((ret = device_delete_child(pccarddev, kids[i])) != 0)
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printf("pccard: delete of %s failed: %d\n",
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device_get_nameunit(kids[i]), ret);
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}
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free(kids, M_TEMP);
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/* Power off the slot 1/2 second after removal of the card */
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slt->poff_ch = timeout(power_off_slot, (caddr_t)slt, hz / 2);
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slt->pwr_off_pending = 1;
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}
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static void
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disable_slot_to(struct slot *slt)
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{
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disable_slot(slt);
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if (slt->state == empty)
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printf("pccard: card removed, slot %d\n", slt->slotnum);
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else
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printf("pccard: card deactivated, slot %d\n", slt->slotnum);
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pccard_remove_beep();
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selwakeup(&slt->selp);
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}
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/*
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* pccard_init_slot - Initialize the slot controller and attach various
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* things to it. We also make the device for it. We create the device that
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* will be exported to devfs.
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*/
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struct slot *
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pccard_init_slot(device_t dev, struct slot_ctrl *ctrl)
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{
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int slotno;
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struct slot *slt;
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slt = PCCARD_DEVICE2SOFTC(dev);
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slotno = device_get_unit(dev);
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slt->dev = dev;
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slt->d = make_dev(&crd_cdevsw, slotno, 0, 0, 0600, "card%d", slotno);
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slt->d->si_drv1 = slt;
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slt->ctrl = ctrl;
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slt->slotnum = slotno;
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callout_handle_init(&slt->insert_ch);
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callout_handle_init(&slt->poff_ch);
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return (slt);
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}
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/*
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* allocate_driver - Create a new device entry for this
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* slot, and attach a driver to it.
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*/
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static int
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allocate_driver(struct slot *slt, struct dev_desc *desc)
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{
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struct pccard_devinfo *devi;
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device_t pccarddev;
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int err, irq = 0;
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device_t child;
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device_t *devs;
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int count;
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pccarddev = slt->dev;
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err = device_get_children(pccarddev, &devs, &count);
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if (err != 0)
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return (err);
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free(devs, M_TEMP);
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if (count) {
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device_printf(pccarddev,
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"Can not attach more than one child.\n");
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return (EIO);
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}
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irq = ffs(desc->irqmask) - 1;
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MALLOC(devi, struct pccard_devinfo *, sizeof(*devi), M_DEVBUF,
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M_WAITOK | M_ZERO);
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strcpy(devi->name, desc->name);
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/*
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* Create an entry for the device under this slot.
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*/
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devi->running = 1;
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devi->slt = slt;
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bcopy(desc->misc, devi->misc, sizeof(desc->misc));
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devi->manufacturer = desc->manufacturer;
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devi->product = desc->product;
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devi->prodext = desc->prodext;
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resource_list_init(&devi->resources);
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child = device_add_child(pccarddev, devi->name, desc->unit);
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if (child == NULL) {
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if (desc->unit != -1)
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device_printf(pccarddev,
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"Unit %d failed for %s, try a different unit\n",
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desc->unit, devi->name);
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else
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device_printf(pccarddev,
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"No units available for %s. Impossible?\n",
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devi->name);
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return (EIO);
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}
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device_set_flags(child, desc->flags);
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device_set_ivars(child, devi);
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if (bootverbose) {
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device_printf(pccarddev,
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"Assigning %s: io 0x%x-0x%x irq %d mem 0x%lx-0x%lx\n",
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device_get_nameunit(child),
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desc->iobase, desc->iobase + desc->iosize - 1,
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irq, desc->mem, desc->mem + desc->memsize - 1);
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}
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err = bus_set_resource(child, SYS_RES_IOPORT, 0, desc->iobase,
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desc->iosize);
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if (err)
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goto err;
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if (irq)
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err = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
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if (err)
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goto err;
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if (desc->memsize) {
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err = bus_set_resource(child, SYS_RES_MEMORY, 0, desc->mem,
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desc->memsize);
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if (err)
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goto err;
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}
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err = device_probe_and_attach(child);
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/*
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* XXX We unwisely assume that the detach code won't run while the
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* XXX the attach code is attaching. Someone should put some
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* XXX interlock code. This can happen if probe/attach takes a while
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* XXX and the user ejects the card, which causes the detach
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* XXX function to be called.
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*/
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strncpy(desc->name, device_get_nameunit(child), sizeof(desc->name));
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desc->name[sizeof(desc->name) - 1] = '\0';
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err:
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if (err)
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device_delete_child(pccarddev, child);
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return (err);
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}
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/*
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* card insert routine - Called from a timeout to debounce
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* insertion events.
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*/
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static void
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inserted(void *arg)
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{
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struct slot *slt = arg;
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slt->state = filled;
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/*
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* Disable any pending timeouts for this slot, and explicitly
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* power it off right now. Then, re-enable the power using
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* the (possibly new) power settings.
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*/
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untimeout(power_off_slot, (caddr_t)slt, slt->poff_ch);
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power_off_slot(slt);
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/*
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* Enable 5V to the card so that the CIS can be read. Well,
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* enable the most natural voltage so that the CIS can be read.
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*/
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slt->pwr.vcc = -1;
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slt->pwr.vpp = -1;
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slt->ctrl->power(slt);
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printf("pccard: card inserted, slot %d\n", slt->slotnum);
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pccard_insert_beep();
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slt->ctrl->reset(slt);
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}
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/*
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* Card event callback. Called at splhigh to prevent
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* device interrupts from interceding.
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*/
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void
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pccard_event(struct slot *slt, enum card_event event)
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{
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if (slt->insert_seq) {
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slt->insert_seq = 0;
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untimeout(inserted, (void *)slt, slt->insert_ch);
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}
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switch(event) {
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case card_removed:
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case card_deactivated:
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if (slt->state == filled || slt->state == inactive) {
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if (event == card_removed)
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slt->state = empty;
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else
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slt->state = inactive;
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disable_slot_to(slt);
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}
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break;
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case card_inserted:
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slt->insert_seq = 1;
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slt->insert_ch = timeout(inserted, (void *)slt, hz/4);
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break;
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}
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}
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/*
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* Device driver interface.
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*/
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static int
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crdopen(dev_t dev, int oflags, int devtype, d_thread_t *td)
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{
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struct slot *slt = PCCARD_DEV2SOFTC(dev);
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if (slt == NULL)
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return (ENXIO);
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if (slt->rwmem == 0)
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slt->rwmem = MDF_ATTR;
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return (0);
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}
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/*
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* Close doesn't de-allocate any resources, since
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* slots may be assigned to drivers already.
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*/
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static int
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crdclose(dev_t dev, int fflag, int devtype, d_thread_t *td)
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{
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return (0);
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}
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/*
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* read interface. Map memory at lseek offset,
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* then transfer to user space.
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*/
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static int
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crdread(dev_t dev, struct uio *uio, int ioflag)
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{
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struct slot *slt = PCCARD_DEV2SOFTC(dev);
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struct mem_desc *mp, oldmap;
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unsigned char *p;
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unsigned int offs;
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int error = 0, win, count;
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if (slt == 0 || slt->state != filled)
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return (ENXIO);
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if (pccard_mem == 0)
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return (ENOMEM);
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for (win = 0; win < slt->ctrl->maxmem; win++)
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if ((slt->mem[win].flags & MDF_ACTIVE) == 0)
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break;
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if (win >= slt->ctrl->maxmem)
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return (EBUSY);
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mp = &slt->mem[win];
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oldmap = *mp;
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mp->flags = slt->rwmem | MDF_ACTIVE;
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while (uio->uio_resid && error == 0) {
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mp->card = uio->uio_offset;
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mp->size = PCCARD_MEMSIZE;
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mp->start = (caddr_t)(void *)(uintptr_t)pccard_mem;
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if ((error = slt->ctrl->mapmem(slt, win)) != 0)
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break;
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offs = (unsigned int)uio->uio_offset & (PCCARD_MEMSIZE - 1);
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p = pccard_kmem + offs;
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count = MIN(PCCARD_MEMSIZE - offs, uio->uio_resid);
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error = uiomove(p, count, uio);
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}
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/*
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* Restore original map.
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*/
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*mp = oldmap;
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slt->ctrl->mapmem(slt, win);
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return (error);
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}
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/*
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* crdwrite - Write data to card memory.
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* Handles wrap around so that only one memory
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* window is used.
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*/
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static int
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crdwrite(dev_t dev, struct uio *uio, int ioflag)
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{
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struct slot *slt = PCCARD_DEV2SOFTC(dev);
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struct mem_desc *mp, oldmap;
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unsigned char *p;
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unsigned int offs;
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int error = 0, win, count;
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if (slt == 0 || slt->state != filled)
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return (ENXIO);
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if (pccard_mem == 0)
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return (ENOMEM);
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for (win = 0; win < slt->ctrl->maxmem; win++)
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if ((slt->mem[win].flags & MDF_ACTIVE) == 0)
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break;
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if (win >= slt->ctrl->maxmem)
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return (EBUSY);
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mp = &slt->mem[win];
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oldmap = *mp;
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mp->flags = slt->rwmem | MDF_ACTIVE;
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while (uio->uio_resid && error == 0) {
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mp->card = uio->uio_offset;
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mp->size = PCCARD_MEMSIZE;
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mp->start = (caddr_t)(void *)(uintptr_t)pccard_mem;
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if ((error = slt->ctrl->mapmem(slt, win)) != 0)
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break;
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offs = (unsigned int)uio->uio_offset & (PCCARD_MEMSIZE - 1);
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p = pccard_kmem + offs;
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count = MIN(PCCARD_MEMSIZE - offs, uio->uio_resid);
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error = uiomove(p, count, uio);
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}
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/*
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* Restore original map.
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*/
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*mp = oldmap;
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slt->ctrl->mapmem(slt, win);
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return (error);
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}
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/*
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* ioctl calls - allows setting/getting of memory and I/O
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* descriptors, and assignment of drivers.
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*/
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static int
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crdioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, d_thread_t *td)
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{
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u_int32_t addr;
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int err;
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struct io_desc *ip;
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struct mem_desc *mp;
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device_t pccarddev;
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int pwval;
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int s;
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struct slot *slt = PCCARD_DEV2SOFTC(dev);
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if (slt == 0 && cmd != PIOCRWMEM)
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return (ENXIO);
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switch(cmd) {
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default:
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if (slt->ctrl->ioctl)
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return (slt->ctrl->ioctl(slt, cmd, data));
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return (ENOTTY);
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/*
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* Get slot state.
|
|
*/
|
|
case PIOCGSTATE:
|
|
s = splhigh();
|
|
((struct slotstate *)data)->state = slt->state;
|
|
((struct slotstate *)data)->laststate = slt->laststate;
|
|
slt->laststate = slt->state;
|
|
splx(s);
|
|
((struct slotstate *)data)->maxmem = slt->ctrl->maxmem;
|
|
((struct slotstate *)data)->maxio = slt->ctrl->maxio;
|
|
((struct slotstate *)data)->irqs = 0;
|
|
break;
|
|
/*
|
|
* Get memory context.
|
|
*/
|
|
case PIOCGMEM:
|
|
s = ((struct mem_desc *)data)->window;
|
|
if (s < 0 || s >= slt->ctrl->maxmem)
|
|
return (EINVAL);
|
|
mp = &slt->mem[s];
|
|
((struct mem_desc *)data)->flags = mp->flags;
|
|
((struct mem_desc *)data)->start = mp->start;
|
|
((struct mem_desc *)data)->size = mp->size;
|
|
((struct mem_desc *)data)->card = mp->card;
|
|
break;
|
|
/*
|
|
* Set memory context. If context already active, then unmap it.
|
|
* It is hard to see how the parameters can be checked.
|
|
* At the very least, we only allow root to set the context.
|
|
*/
|
|
case PIOCSMEM:
|
|
if (suser(td))
|
|
return (EPERM);
|
|
if (slt->state != filled)
|
|
return (ENXIO);
|
|
s = ((struct mem_desc *)data)->window;
|
|
if (s < 0 || s >= slt->ctrl->maxmem)
|
|
return (EINVAL);
|
|
slt->mem[s] = *((struct mem_desc *)data);
|
|
return (slt->ctrl->mapmem(slt, s));
|
|
/*
|
|
* Get I/O port context.
|
|
*/
|
|
case PIOCGIO:
|
|
s = ((struct io_desc *)data)->window;
|
|
if (s < 0 || s >= slt->ctrl->maxio)
|
|
return (EINVAL);
|
|
ip = &slt->io[s];
|
|
((struct io_desc *)data)->flags = ip->flags;
|
|
((struct io_desc *)data)->start = ip->start;
|
|
((struct io_desc *)data)->size = ip->size;
|
|
break;
|
|
/*
|
|
* Set I/O port context.
|
|
*/
|
|
case PIOCSIO:
|
|
if (suser(td))
|
|
return (EPERM);
|
|
if (slt->state != filled)
|
|
return (ENXIO);
|
|
s = ((struct io_desc *)data)->window;
|
|
if (s < 0 || s >= slt->ctrl->maxio)
|
|
return (EINVAL);
|
|
slt->io[s] = *((struct io_desc *)data);
|
|
/* XXX Don't actually map */
|
|
return (0);
|
|
break;
|
|
/*
|
|
* Set memory window flags for read/write interface.
|
|
*/
|
|
case PIOCRWFLAG:
|
|
slt->rwmem = *(int *)data;
|
|
break;
|
|
/*
|
|
* Set the memory window to be used for the read/write interface.
|
|
* Not available on the alpha.
|
|
*/
|
|
case PIOCRWMEM:
|
|
if (*(unsigned long *)data == 0) {
|
|
*(unsigned long *)data = pccard_mem;
|
|
break;
|
|
}
|
|
if (suser(td))
|
|
return (EPERM);
|
|
/*
|
|
* Validate the memory by checking it against the I/O
|
|
* memory range. It must also start on an aligned block size.
|
|
*/
|
|
if (*(unsigned long *)data & (PCCARD_MEMSIZE-1))
|
|
return (EINVAL);
|
|
pccarddev = PCCARD_DEV2SOFTC(dev)->dev;
|
|
pccard_mem_rid = 0;
|
|
addr = *(unsigned long *)data;
|
|
if (pccard_mem_res)
|
|
bus_release_resource(pccarddev, SYS_RES_MEMORY,
|
|
pccard_mem_rid, pccard_mem_res);
|
|
pccard_mem_res = bus_alloc_resource(pccarddev, SYS_RES_MEMORY,
|
|
&pccard_mem_rid, addr, addr, PCCARD_MEMSIZE,
|
|
RF_ACTIVE | rman_make_alignment_flags(PCCARD_MEMSIZE));
|
|
if (pccard_mem_res == NULL)
|
|
return (EINVAL);
|
|
pccard_mem = rman_get_start(pccard_mem_res);
|
|
pccard_kmem = rman_get_virtual(pccard_mem_res);
|
|
break;
|
|
/*
|
|
* Set power values.
|
|
*/
|
|
case PIOCSPOW:
|
|
slt->pwr = *(struct power *)data;
|
|
return (slt->ctrl->power(slt));
|
|
/*
|
|
* Allocate a driver to this slot.
|
|
*/
|
|
case PIOCSDRV:
|
|
if (suser(td))
|
|
return (EPERM);
|
|
err = allocate_driver(slt, (struct dev_desc *)data);
|
|
if (!err)
|
|
pccard_success_beep();
|
|
else
|
|
pccard_failure_beep();
|
|
return (err);
|
|
/*
|
|
* Virtual removal/insertion
|
|
*/
|
|
case PIOCSVIR:
|
|
pwval = *(int *)data;
|
|
if (!pwval) {
|
|
if (slt->state != filled)
|
|
return (EINVAL);
|
|
pccard_event(slt, card_deactivated);
|
|
} else {
|
|
if (slt->state != empty && slt->state != inactive)
|
|
return (EINVAL);
|
|
pccard_event(slt, card_inserted);
|
|
}
|
|
break;
|
|
case PIOCSBEEP:
|
|
if (pccard_beep_select(*(int *)data)) {
|
|
return (EINVAL);
|
|
}
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* poll - Poll on exceptions will return true
|
|
* when a change in card status occurs.
|
|
*/
|
|
static int
|
|
crdpoll(dev_t dev, int events, d_thread_t *td)
|
|
{
|
|
int revents = 0;
|
|
int s;
|
|
struct slot *slt = PCCARD_DEV2SOFTC(dev);
|
|
|
|
if (events & (POLLIN | POLLRDNORM))
|
|
revents |= events & (POLLIN | POLLRDNORM);
|
|
|
|
if (events & (POLLOUT | POLLWRNORM))
|
|
revents |= events & (POLLIN | POLLRDNORM);
|
|
|
|
s = splhigh();
|
|
/*
|
|
* select for exception - card event.
|
|
*/
|
|
if (events & POLLRDBAND)
|
|
if (slt == 0 || slt->laststate != slt->state)
|
|
revents |= POLLRDBAND;
|
|
|
|
if (revents == 0)
|
|
selrecord(td, &slt->selp);
|
|
|
|
splx(s);
|
|
return (revents);
|
|
}
|
|
|
|
/*
|
|
* APM hooks for suspending and resuming.
|
|
*/
|
|
int
|
|
pccard_suspend(device_t dev)
|
|
{
|
|
struct slot *slt = PCCARD_DEVICE2SOFTC(dev);
|
|
|
|
/* This code stolen from pccard_event:card_removed */
|
|
if (slt->state == filled) {
|
|
int s = splhigh(); /* nop on current */
|
|
disable_slot(slt);
|
|
slt->laststate = suspend; /* for pccardd */
|
|
slt->state = empty;
|
|
splx(s);
|
|
printf("pccard: card disabled, slot %d\n", slt->slotnum);
|
|
}
|
|
/*
|
|
* Disable any pending timeouts for this slot since we're
|
|
* powering it down/disabling now.
|
|
*/
|
|
untimeout(power_off_slot, (caddr_t)slt, slt->poff_ch);
|
|
slt->ctrl->disable(slt);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pccard_resume(device_t dev)
|
|
{
|
|
struct slot *slt = PCCARD_DEVICE2SOFTC(dev);
|
|
|
|
slt->ctrl->resume(slt);
|
|
return (0);
|
|
}
|