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c1c1a23f53
power x 0. pccardc power x 0 used to disable the slot. But a suspend/resume would reactivate the pccard. It no longer does that. Now the disabling of the slot is sticy until it is reset with power x 1 or the card is ejected. This seems closer to correct behavior to me. o Process all card state changes the same using pccard_do_stat_change(). o Cleanup disabling the card so that we can preserve the state after the change. Basically, don't set it to empty as often as we do. o On suspend, the new state is "empty" and the laststate is "suspend" o Document state machine with a diagram of states and edges. The edges are labeld to tell the reader what event causes the external state changes. o "machdep.pccard.pcic_resume_reset" may be obsolete now. We always call the bridge driver's resume method on resume now. Otherwise cards won't automatically show up. If it needs to stay, I'll add it back.
132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/*
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* Slot structures for PC-CARD interface.
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* Each slot has a controller specific structure
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* attached to it. A slot number allows
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* mapping from the character device to the
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* slot structure. This is separate to the
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* controller slot number to allow multiple controllers
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* to be accessed.
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*-------------------------------------------------------------------------
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*
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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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#ifndef _PCCARD_SLOT_H
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#define _PCCARD_SLOT_H
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/*
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* Normally we shouldn't include stuff here, but we're trying to be
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* compatible with the long, dark hand of the past.
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*/
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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/selinfo.h>
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/*
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* Controller data - Specific to each slot controller.
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*/
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struct slot;
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struct slot_ctrl {
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void (*mapirq)(struct slot *, int);
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/* Map irq */
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int (*mapmem)(struct slot *, int);
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/* Map memory */
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int (*mapio)(struct slot *, int);
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/* Map io */
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void (*reset)(void *);
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/* init */
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void (*disable)(struct slot *);
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/* Disable slot */
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int (*power)(struct slot *);
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/* Set power values */
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int (*ioctl)(struct slot *, int, caddr_t);
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/* ioctl to lower level */
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void (*resume)(struct slot *);
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/* suspend/resume support */
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int maxmem; /* Number of allowed memory windows */
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int maxio; /* Number of allowed I/O windows */
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};
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/*
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* Device structure for cards. Each card may have one
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* or more pccard drivers attached to it; each driver is assumed
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* to require at most one interrupt handler, one I/O block
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* and one memory block. This structure is used to link the different
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* devices together.
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*/
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struct pccard_devinfo {
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u_char name[128];
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int running; /* Current state of driver */
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u_char misc[128]; /* For any random info */
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struct slot *slt; /* Back pointer to slot */
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struct resource_list resources;
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};
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/*
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* Per-slot structure.
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*/
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struct slot {
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int slotnum; /* Slot number */
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int flags; /* Slot flags (see below) */
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int rwmem; /* Read/write flags */
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int irq; /* IRQ allocated (0 = none) */
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/*
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* flags.
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*/
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unsigned int insert_seq; /* Firing up under the card */
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struct callout_handle insert_ch;/* Insert event timeout handle */
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struct callout_handle poff_ch; /* Power Off timeout handle */
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enum cardstate state, laststate; /* Current/last card states */
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struct selinfo selp; /* Info for select */
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struct mem_desc mem[NUM_MEM_WINDOWS]; /* Memory windows */
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struct io_desc io[NUM_IO_WINDOWS]; /* I/O windows */
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struct power pwr; /* Power values */
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struct slot_ctrl *ctrl; /* Per-controller data */
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void *cdata; /* Controller specific data */
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int pwr_off_pending;/* Power status of slot */
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device_t dev; /* Config system device. */
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dev_t d; /* fs device */
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};
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#define PCCARD_DEVICE2SOFTC(d) ((struct slot *) device_get_softc(d))
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#define PCCARD_DEV2SOFTC(d) ((struct slot *) (d)->si_drv1)
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enum card_event { card_removed, card_inserted, card_deactivated };
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struct slot *pccard_init_slot(device_t, struct slot_ctrl *);
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void pccard_event(struct slot *, enum card_event);
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int pccard_suspend(device_t);
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int pccard_resume(device_t);
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#endif /* !_PCCARD_SLOT_H */
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