1046 lines
24 KiB
C
1046 lines
24 KiB
C
/*
|
|
* pccard.c - Interface code for PC-CARD controllers.
|
|
*
|
|
* June 1995, Andrew McRae (andrew@mega.com.au)
|
|
*-------------------------------------------------------------------------
|
|
*
|
|
* Copyright (c) 1995 Andrew McRae. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "crd.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/file.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/conf.h>
|
|
#ifdef DEVFS
|
|
#include <sys/devfsext.h>
|
|
#endif /*DEVFS*/
|
|
|
|
#ifdef PC98
|
|
#include <pc98/pc98/pc98.h>
|
|
#else
|
|
#include <i386/isa/isa.h>
|
|
#endif /* PC98 */
|
|
#include <i386/isa/isa_device.h>
|
|
#include <i386/isa/icu.h>
|
|
|
|
#include "apm.h"
|
|
#if NAPM > 0
|
|
#include <machine/apm_bios.h>
|
|
#endif /* NAPM > 0 */
|
|
|
|
#include <pccard/card.h>
|
|
#include <pccard/driver.h>
|
|
#include <pccard/slot.h>
|
|
|
|
#include <machine/clock.h>
|
|
#include <machine/md_var.h>
|
|
|
|
|
|
#define PCCARD_MEMSIZE (4*1024)
|
|
|
|
#define MIN(a,b) ((a)<(b)?(a):(b))
|
|
|
|
static int allocate_driver(struct slot *, struct drv_desc *);
|
|
static void inserted(void *);
|
|
static void disable_slot(struct slot *);
|
|
static int invalid_io_memory(unsigned long, int);
|
|
static struct pccard_drv *find_driver(char *);
|
|
static void remove_device(struct pccard_dev *);
|
|
static void slot_irq_handler(int);
|
|
static void power_off_slot(void *);
|
|
|
|
#if NAPM > 0
|
|
/*
|
|
* For the APM stuff, the apmhook structure is kept
|
|
* separate from the slot structure so that the slot
|
|
* drivers do not need to know about the hooks (or the
|
|
* data structures).
|
|
*/
|
|
static int slot_suspend(void *arg);
|
|
static int slot_resume(void *arg);
|
|
static struct apmhook s_hook[MAXSLOT]; /* APM suspend */
|
|
static struct apmhook r_hook[MAXSLOT]; /* APM resume */
|
|
#endif /* NAPM > 0 */
|
|
|
|
static struct slot *pccard_slots[MAXSLOT]; /* slot entries */
|
|
static struct slot *slot_list;
|
|
static struct slot_ctrl *cont_list;
|
|
static struct pccard_drv *drivers; /* Card drivers */
|
|
|
|
/*
|
|
* The driver interface for read/write uses a block
|
|
* of memory in the ISA I/O memory space allocated via
|
|
* an ioctl setting.
|
|
*/
|
|
static unsigned long pccard_mem; /* Physical memory */
|
|
static unsigned char *pccard_kmem; /* Kernel virtual address */
|
|
|
|
static d_open_t crdopen;
|
|
static d_close_t crdclose;
|
|
static d_read_t crdread;
|
|
static d_write_t crdwrite;
|
|
static d_ioctl_t crdioctl;
|
|
static d_select_t crdselect;
|
|
|
|
#define CDEV_MAJOR 50
|
|
static struct cdevsw crd_cdevsw =
|
|
{ crdopen, crdclose, crdread, crdwrite, /*50*/
|
|
crdioctl, nostop, nullreset, nodevtotty,/* pcmcia */
|
|
crdselect, nommap, NULL, "crd", NULL, -1 };
|
|
|
|
|
|
/*
|
|
* pccard_configure - called by autoconf code.
|
|
* Probes for various PC-CARD controllers, and
|
|
* initialises data structures to point to the
|
|
* various slots.
|
|
*
|
|
* Each controller indicates the number of slots
|
|
* that it sees, and these are mapped to a master
|
|
* slot number accessed via the character device entries.
|
|
*/
|
|
void
|
|
pccard_configure()
|
|
{
|
|
|
|
#include "pcic.h"
|
|
#if NPCIC > 0
|
|
pcic_probe();
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* pccard_add_driver - Add a new driver to the list of
|
|
* drivers available for allocation.
|
|
*/
|
|
void
|
|
pccard_add_driver(struct pccard_drv *dp)
|
|
{
|
|
/*
|
|
* If already loaded, then reject the driver.
|
|
*/
|
|
if (find_driver(dp->name)) {
|
|
printf("Driver %s already loaded\n", dp->name);
|
|
return;
|
|
}
|
|
printf("pccard driver %s added\n", dp->name);
|
|
dp->next = drivers;
|
|
drivers = dp;
|
|
}
|
|
|
|
/*
|
|
* pccard_remove_driver - called to unlink driver
|
|
* from devices. Usually called when drivers are
|
|
* are unloaded from kernel.
|
|
*/
|
|
void
|
|
pccard_remove_driver(struct pccard_drv *dp)
|
|
{
|
|
struct slot *sp;
|
|
struct pccard_dev *devp, *next;
|
|
struct pccard_drv *drvp;
|
|
|
|
for (sp = slot_list; sp; sp = sp->next)
|
|
for (devp = sp->devices; devp; devp = next) {
|
|
next = devp->next;
|
|
if (devp->drv == dp)
|
|
remove_device(devp);
|
|
}
|
|
/*
|
|
* Once all the devices belonging to this driver have been
|
|
* freed, then remove the driver from the list
|
|
* of registered drivers.
|
|
*/
|
|
if (drivers == dp)
|
|
drivers = dp->next;
|
|
else
|
|
for (drvp = drivers; drvp->next; drvp = drvp->next)
|
|
if (drvp->next == dp) {
|
|
drvp->next = dp->next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* pccard_remove_controller - Called when the slot
|
|
* driver is unloaded. The plan is to unload
|
|
* drivers from the slots, and then remove the
|
|
* slots from the slot list, and then finally
|
|
* remove the controller structure. Messy...
|
|
*/
|
|
void
|
|
pccard_remove_controller(struct slot_ctrl *cp)
|
|
{
|
|
struct slot *sp, *next, *last = 0;
|
|
struct slot_ctrl *cl;
|
|
struct pccard_dev *dp;
|
|
|
|
for (sp = slot_list; sp; sp = next) {
|
|
next = sp->next;
|
|
/*
|
|
* If this slot belongs to this controller,
|
|
* remove this slot.
|
|
*/
|
|
if (sp->ctrl == cp) {
|
|
pccard_slots[sp->slot] = 0;
|
|
if (sp->insert_seq)
|
|
untimeout(inserted, (void *)sp);
|
|
/*
|
|
* Unload the drivers attached to this slot.
|
|
*/
|
|
while (dp = sp->devices)
|
|
remove_device(dp);
|
|
/*
|
|
* Disable the slot and unlink the slot from the
|
|
* slot list.
|
|
*/
|
|
disable_slot(sp);
|
|
if (last)
|
|
last->next = next;
|
|
else
|
|
slot_list = next;
|
|
#if NAPM > 0
|
|
apm_hook_disestablish(APM_HOOK_SUSPEND,
|
|
&s_hook[sp->slot]);
|
|
apm_hook_disestablish(APM_HOOK_RESUME,
|
|
&r_hook[sp->slot]);
|
|
#endif
|
|
if (cp->extra && sp->cdata)
|
|
FREE(sp->cdata, M_DEVBUF);
|
|
FREE(sp, M_DEVBUF);
|
|
/*
|
|
* xx Can't use sp after we have freed it.
|
|
*/
|
|
} else {
|
|
last = sp;
|
|
}
|
|
}
|
|
/*
|
|
* Unlink controller structure from controller list.
|
|
*/
|
|
if (cont_list == cp)
|
|
cont_list = cp->next;
|
|
else
|
|
for (cl = cont_list; cl->next; cl = cl->next)
|
|
if (cl->next == cp) {
|
|
cl->next = cp->next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Power off the slot.
|
|
* (doing it immediately makes the removal of some cards unstable)
|
|
*/
|
|
static void
|
|
power_off_slot(void *arg)
|
|
{
|
|
struct slot *sp = (struct slot *)arg;
|
|
|
|
sp->pwr_off_pending = 0;
|
|
|
|
/* Power off the slot. */
|
|
sp->ctrl->disable(sp);
|
|
}
|
|
|
|
/*
|
|
* disable_slot - Disables the slot by removing
|
|
* the power and unmapping the I/O
|
|
*/
|
|
static void
|
|
disable_slot(struct slot *sp)
|
|
{
|
|
int i;
|
|
struct pccard_dev *devp;
|
|
/*
|
|
* Unload all the drivers on this slot. Note we can't
|
|
* call remove_device from here, because this may be called
|
|
* from the event routine, which is called from the slot
|
|
* controller's ISR, and this could remove the device
|
|
* structure out in the middle of some driver activity.
|
|
*
|
|
* Note that a race condition is possible here; if a
|
|
* driver is accessing the device and it is removed, then
|
|
* all bets are off...
|
|
*/
|
|
for (devp = sp->devices; devp; devp = devp->next) {
|
|
if (devp->running) {
|
|
int s = splhigh();
|
|
devp->drv->unload(devp);
|
|
devp->running = 0;
|
|
if (devp->isahd.id_irq && --sp->irqref == 0) {
|
|
printf("Return IRQ=%d\n",sp->irq);
|
|
sp->ctrl->mapirq(sp, 0);
|
|
INTRDIS(1<<sp->irq);
|
|
unregister_intr(sp->irq, slot_irq_handler);
|
|
if (devp->drv->imask)
|
|
INTRUNMASK(*devp->drv->imask,(1<<sp->irq));
|
|
sp->irq = 0;
|
|
}
|
|
splx(s);
|
|
}
|
|
}
|
|
/* Power off the slot 1/2 second after remove of the card */
|
|
timeout(power_off_slot, (caddr_t)sp, hz / 2);
|
|
sp->pwr_off_pending = 1;
|
|
|
|
/* De-activate all contexts. */
|
|
for (i = 0; i < sp->ctrl->maxmem; i++)
|
|
if (sp->mem[i].flags & MDF_ACTIVE) {
|
|
sp->mem[i].flags = 0;
|
|
(void)sp->ctrl->mapmem(sp, i);
|
|
}
|
|
for (i = 0; i < sp->ctrl->maxio; i++)
|
|
if (sp->io[i].flags & IODF_ACTIVE) {
|
|
sp->io[i].flags = 0;
|
|
(void)sp->ctrl->mapio(sp, i);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* APM hooks for suspending and resuming.
|
|
*/
|
|
#if NAPM > 0
|
|
static int
|
|
slot_suspend(void *arg)
|
|
{
|
|
struct slot *sp = arg;
|
|
struct pccard_dev *dp;
|
|
|
|
for (dp = sp->devices; dp; dp = dp->next)
|
|
(void) dp->drv->suspend(dp);
|
|
if (!sp->suspend_power)
|
|
sp->ctrl->disable(sp);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
slot_resume(void *arg)
|
|
{
|
|
struct slot *sp = arg;
|
|
struct pccard_dev *dp;
|
|
|
|
#ifdef PCIC_RESUME_RESET
|
|
sp->ctrl->resume(sp);
|
|
#endif
|
|
|
|
if (!sp->suspend_power)
|
|
sp->ctrl->power(sp);
|
|
if (sp->irq)
|
|
sp->ctrl->mapirq(sp, sp->irq);
|
|
for (dp = sp->devices; dp; dp = dp->next)
|
|
(void) dp->drv->init(dp, 0);
|
|
return (0);
|
|
}
|
|
#endif /* NAPM > 0 */
|
|
|
|
|
|
/*
|
|
* pccard_alloc_slot - Called from controller probe
|
|
* routine, this function allocates a new PC-CARD slot
|
|
* and initialises the data structures using the data provided.
|
|
* It returns the allocated structure to the probe routine
|
|
* to allow the controller specific data to be initialised.
|
|
*/
|
|
struct slot *
|
|
pccard_alloc_slot(struct slot_ctrl *cp)
|
|
{
|
|
struct slot *sp;
|
|
int slotno;
|
|
|
|
for (slotno = 0; slotno < MAXSLOT; slotno++)
|
|
if (pccard_slots[slotno] == 0)
|
|
break;
|
|
if (slotno >= MAXSLOT)
|
|
return(0);
|
|
MALLOC(sp, struct slot *, sizeof(*sp), M_DEVBUF, M_WAITOK);
|
|
bzero(sp, sizeof(*sp));
|
|
#ifdef DEVFS
|
|
sp->devfs_token = devfs_add_devswf( &crd_cdevsw,
|
|
0, DV_CHR, 0, 0, 0600, "card%d", slotno);
|
|
#endif
|
|
if (cp->extra) {
|
|
MALLOC(sp->cdata, void *, cp->extra, M_DEVBUF, M_WAITOK);
|
|
bzero(sp->cdata, cp->extra);
|
|
}
|
|
sp->ctrl = cp;
|
|
sp->slot = slotno;
|
|
pccard_slots[slotno] = sp;
|
|
sp->next = slot_list;
|
|
slot_list = sp;
|
|
/*
|
|
* If this controller hasn't been seen before, then
|
|
* link it into the list of controllers.
|
|
*/
|
|
if (cp->slots++ == 0) {
|
|
cp->next = cont_list;
|
|
cont_list = cp;
|
|
if (cp->maxmem > NUM_MEM_WINDOWS)
|
|
cp->maxmem = NUM_MEM_WINDOWS;
|
|
if (cp->maxio > NUM_IO_WINDOWS)
|
|
cp->maxio = NUM_IO_WINDOWS;
|
|
printf("PC-Card %s (%d mem & %d I/O windows)\n",
|
|
cp->name, cp->maxmem, cp->maxio);
|
|
}
|
|
#if NAPM > 0
|
|
{
|
|
struct apmhook *ap;
|
|
|
|
ap = &s_hook[sp->slot];
|
|
ap->ah_fun = slot_suspend;
|
|
ap->ah_arg = (void *)sp;
|
|
ap->ah_name = cp->name;
|
|
ap->ah_order = APM_MID_ORDER;
|
|
apm_hook_establish(APM_HOOK_SUSPEND, ap);
|
|
ap = &r_hook[sp->slot];
|
|
ap->ah_fun = slot_resume;
|
|
ap->ah_arg = (void *)sp;
|
|
ap->ah_name = cp->name;
|
|
ap->ah_order = APM_MID_ORDER;
|
|
apm_hook_establish(APM_HOOK_RESUME, ap);
|
|
}
|
|
#endif /* NAPM > 0 */
|
|
return(sp);
|
|
}
|
|
|
|
/*
|
|
* pccard_alloc_intr - allocate an interrupt from the
|
|
* free interrupts and return its number. The interrupts
|
|
* allowed are passed as a mask.
|
|
*/
|
|
int
|
|
pccard_alloc_intr(int imask, inthand2_t *hand, int unit, int *maskp)
|
|
{
|
|
int irq;
|
|
unsigned int mask;
|
|
|
|
for (irq = 1; irq < 16; irq++) {
|
|
mask = 1ul << irq;
|
|
if (!(mask & imask))
|
|
continue;
|
|
if (maskp)
|
|
INTRMASK (*maskp, mask);
|
|
if (register_intr(irq, 0, 0, hand, maskp, unit)==0) {
|
|
INTREN (mask);
|
|
return(irq);
|
|
}
|
|
/* Well no luck, remove from mask again... */
|
|
if (maskp)
|
|
INTRUNMASK (*maskp, mask);
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* allocate_driver - Create a new device entry for this
|
|
* slot, and attach a driver to it.
|
|
*/
|
|
static int
|
|
allocate_driver(struct slot *sp, struct drv_desc *drvp)
|
|
{
|
|
struct pccard_dev *devp;
|
|
struct pccard_drv *dp;
|
|
int err, irq = 0, s;
|
|
|
|
dp = find_driver(drvp->name);
|
|
if (dp == 0)
|
|
return(ENXIO);
|
|
/*
|
|
* If an instance of this driver is already installed,
|
|
* but not running, then remove it. If it is running,
|
|
* then reject the request.
|
|
*/
|
|
for (devp = sp->devices; devp; devp = devp->next)
|
|
if (devp->drv == dp && devp->isahd.id_unit == drvp->unit) {
|
|
if (devp->running)
|
|
return(EBUSY);
|
|
remove_device(devp);
|
|
break;
|
|
}
|
|
/*
|
|
* If an interrupt mask has been given, then check it
|
|
* against the slot interrupt (if one has been allocated).
|
|
*/
|
|
if (drvp->irqmask && dp->imask) {
|
|
if ((sp->ctrl->irqs & drvp->irqmask)==0)
|
|
return(EINVAL);
|
|
if (sp->irq) {
|
|
if (((1 << sp->irq)&drvp->irqmask)==0)
|
|
return(EINVAL);
|
|
sp->irqref++;
|
|
irq = sp->irq;
|
|
} else {
|
|
/*
|
|
* Attempt to allocate an interrupt.
|
|
* XXX We lose at the moment if the second
|
|
* device relies on a different interrupt mask.
|
|
*/
|
|
irq = pccard_alloc_intr(drvp->irqmask,
|
|
slot_irq_handler, (int)sp, dp->imask);
|
|
if (irq < 0)
|
|
return(EINVAL);
|
|
sp->irq = irq;
|
|
sp->irqref = 1;
|
|
sp->ctrl->mapirq(sp, sp->irq);
|
|
}
|
|
}
|
|
MALLOC(devp, struct pccard_dev *, sizeof(*devp), M_DEVBUF, M_WAITOK);
|
|
bzero(devp, sizeof(*devp));
|
|
/*
|
|
* Create an entry for the device under this slot.
|
|
*/
|
|
devp->drv = dp;
|
|
devp->sp = sp;
|
|
devp->isahd.id_irq = irq;
|
|
devp->isahd.id_unit = drvp->unit;
|
|
devp->isahd.id_msize = drvp->memsize;
|
|
devp->isahd.id_iobase = drvp->iobase;
|
|
bcopy(drvp->misc, devp->misc, sizeof drvp->misc);
|
|
if (irq)
|
|
devp->isahd.id_irq = 1 << irq;
|
|
devp->isahd.id_flags = drvp->flags;
|
|
/*
|
|
* Convert the memory to kernel space.
|
|
*/
|
|
if (drvp->mem)
|
|
devp->isahd.id_maddr =
|
|
(caddr_t)(drvp->mem + atdevbase - 0xA0000);
|
|
else
|
|
devp->isahd.id_maddr = 0;
|
|
devp->next = sp->devices;
|
|
sp->devices = devp;
|
|
s = splhigh();
|
|
err = dp->init(devp, 1);
|
|
splx(s);
|
|
/*
|
|
* If the init functions returns no error, then the
|
|
* device has been successfully installed. If so, then
|
|
* attach it to the slot, otherwise free it and return
|
|
* the error.
|
|
*/
|
|
if (err)
|
|
remove_device(devp);
|
|
else
|
|
devp->running = 1;
|
|
return(err);
|
|
}
|
|
|
|
static void
|
|
remove_device(struct pccard_dev *devp)
|
|
{
|
|
struct slot *sp = devp->sp;
|
|
struct pccard_dev *list;
|
|
int s;
|
|
|
|
/*
|
|
* If an interrupt is enabled on this slot,
|
|
* then unregister it if no-one else is using it.
|
|
*/
|
|
s = splhigh();
|
|
if (devp->running) {
|
|
devp->drv->unload(devp);
|
|
devp->running = 0;
|
|
}
|
|
if (devp->isahd.id_irq && --sp->irqref == 0) {
|
|
printf("Return IRQ=%d\n",sp->irq);
|
|
sp->ctrl->mapirq(sp, 0);
|
|
INTRDIS(1<<sp->irq);
|
|
unregister_intr(sp->irq, slot_irq_handler);
|
|
if (devp->drv->imask)
|
|
INTRUNMASK(*devp->drv->imask,(1<<sp->irq));
|
|
sp->irq = 0;
|
|
}
|
|
splx(s);
|
|
/*
|
|
* Remove from device list on this slot.
|
|
*/
|
|
if (sp->devices == devp)
|
|
sp->devices = devp->next;
|
|
else
|
|
for (list = sp->devices; list->next; list = list->next)
|
|
if (list->next == devp) {
|
|
list->next = devp->next;
|
|
break;
|
|
}
|
|
/*
|
|
* Finally, free the memory space.
|
|
*/
|
|
FREE(devp, M_DEVBUF);
|
|
}
|
|
|
|
/*
|
|
* card insert routine - Called from a timeout to debounce
|
|
* insertion events.
|
|
*/
|
|
static void
|
|
inserted(void *arg)
|
|
{
|
|
struct slot *sp = arg;
|
|
|
|
sp->state = filled;
|
|
/*
|
|
* Enable 5V to the card so that the CIS can be read.
|
|
*/
|
|
sp->pwr.vcc = 50;
|
|
sp->pwr.vpp = 0;
|
|
untimeout(power_off_slot, (caddr_t)sp);
|
|
if (sp->pwr_off_pending)
|
|
sp->ctrl->disable(sp);
|
|
sp->pwr_off_pending = 0;
|
|
sp->ctrl->power(sp);
|
|
printf("Card inserted, slot %d\n", sp->slot);
|
|
/*
|
|
* Now start resetting the card.
|
|
*/
|
|
sp->ctrl->reset(sp);
|
|
#if NAPM > 0
|
|
sp->suspend_power = 0;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Insert/Remove beep
|
|
*/
|
|
|
|
static int beepok = 0;
|
|
|
|
static void enable_beep(void *dummy)
|
|
{
|
|
beepok = 1;
|
|
}
|
|
|
|
/*
|
|
* Card event callback. Called at splhigh to prevent
|
|
* device interrupts from interceding.
|
|
*/
|
|
void
|
|
pccard_event(struct slot *sp, enum card_event event)
|
|
{
|
|
int s;
|
|
|
|
if (sp->insert_seq) {
|
|
sp->insert_seq = 0;
|
|
untimeout(inserted, (void *)sp);
|
|
}
|
|
switch(event) {
|
|
case card_removed:
|
|
/*
|
|
* The slot and devices are disabled, but the
|
|
* data structures are not unlinked.
|
|
*/
|
|
if (sp->state == filled) {
|
|
s = splhigh();
|
|
disable_slot(sp);
|
|
sp->state = empty;
|
|
splx(s);
|
|
printf("Card removed, slot %d\n", sp->slot);
|
|
if (beepok)
|
|
sysbeep(PCCARD_BEEP_PITCH0, PCCARD_BEEP_DURATION0);
|
|
beepok = 0;
|
|
timeout(enable_beep, (void *)NULL, hz/5);
|
|
selwakeup(&sp->selp);
|
|
}
|
|
break;
|
|
case card_inserted:
|
|
sp->insert_seq = 1;
|
|
timeout(inserted, (void *)sp, hz/4);
|
|
if (beepok)
|
|
sysbeep(PCCARD_BEEP_PITCH0, PCCARD_BEEP_DURATION0);
|
|
beepok = 0;
|
|
timeout(enable_beep, (void *)NULL, hz/5);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* slot_irq_handler - Interrupt handler for shared irq devices.
|
|
*/
|
|
static void
|
|
slot_irq_handler(int sp)
|
|
{
|
|
struct pccard_dev *dp;
|
|
|
|
/*
|
|
* For each device that has the shared interrupt,
|
|
* call the interrupt handler. If the interrupt was
|
|
* caught, the handler returns true.
|
|
*/
|
|
for (dp = ((struct slot *)sp)->devices; dp; dp = dp->next)
|
|
if (dp->isahd.id_irq && dp->running && dp->drv->handler(dp))
|
|
return;
|
|
printf("Slot %d, unfielded interrupt (%d)\n",
|
|
((struct slot *)sp)->slot, ((struct slot *)sp)->irq);
|
|
}
|
|
|
|
/*
|
|
* Device driver interface.
|
|
*/
|
|
static int
|
|
crdopen(dev_t dev, int oflags, int devtype, struct proc *p)
|
|
{
|
|
struct slot *sp;
|
|
|
|
if (minor(dev) >= MAXSLOT)
|
|
return(ENXIO);
|
|
sp = pccard_slots[minor(dev)];
|
|
if (sp==0)
|
|
return(ENXIO);
|
|
if (sp->rwmem == 0)
|
|
sp->rwmem = MDF_ATTR;
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Close doesn't de-allocate any resources, since
|
|
* slots may be assigned to drivers already.
|
|
*/
|
|
static int
|
|
crdclose(dev_t dev, int fflag, int devtype, struct proc *p)
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* read interface. Map memory at lseek offset,
|
|
* then transfer to user space.
|
|
*/
|
|
static int
|
|
crdread(dev_t dev, struct uio *uio, int ioflag)
|
|
{
|
|
struct slot *sp = pccard_slots[minor(dev)];
|
|
unsigned char *p;
|
|
int error = 0, win, count;
|
|
struct mem_desc *mp, oldmap;
|
|
unsigned int offs;
|
|
|
|
if (sp == 0 || sp->state != filled)
|
|
return(ENXIO);
|
|
if (pccard_mem == 0)
|
|
return(ENOMEM);
|
|
for (win = 0; win < sp->ctrl->maxmem; win++)
|
|
if ((sp->mem[win].flags & MDF_ACTIVE)==0)
|
|
break;
|
|
if (win >= sp->ctrl->maxmem)
|
|
return(EBUSY);
|
|
mp = &sp->mem[win];
|
|
oldmap = *mp;
|
|
mp->flags = sp->rwmem|MDF_ACTIVE;
|
|
#if 0
|
|
printf("Rd at offs %d, size %d\n", (int)uio->uio_offset,
|
|
uio->uio_resid);
|
|
#endif
|
|
while (uio->uio_resid && error == 0) {
|
|
mp->card = uio->uio_offset;
|
|
mp->size = PCCARD_MEMSIZE;
|
|
mp->start = (caddr_t)pccard_mem;
|
|
if (error = sp->ctrl->mapmem(sp, win))
|
|
break;
|
|
offs = (unsigned int)uio->uio_offset & (PCCARD_MEMSIZE - 1);
|
|
p = pccard_kmem + offs;
|
|
count = MIN(PCCARD_MEMSIZE - offs, uio->uio_resid);
|
|
error = uiomove(p, count, uio);
|
|
}
|
|
/*
|
|
* Restore original map.
|
|
*/
|
|
*mp = oldmap;
|
|
sp->ctrl->mapmem(sp, win);
|
|
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* crdwrite - Write data to card memory.
|
|
* Handles wrap around so that only one memory
|
|
* window is used.
|
|
*/
|
|
static int
|
|
crdwrite(dev_t dev, struct uio *uio, int ioflag)
|
|
{
|
|
struct slot *sp = pccard_slots[minor(dev)];
|
|
unsigned char *p;
|
|
int error = 0, win, count;
|
|
struct mem_desc *mp, oldmap;
|
|
unsigned int offs;
|
|
|
|
if (sp == 0 || sp->state != filled)
|
|
return(ENXIO);
|
|
if (pccard_mem == 0)
|
|
return(ENOMEM);
|
|
for (win = 0; win < sp->ctrl->maxmem; win++)
|
|
if ((sp->mem[win].flags & MDF_ACTIVE)==0)
|
|
break;
|
|
if (win >= sp->ctrl->maxmem)
|
|
return(EBUSY);
|
|
mp = &sp->mem[win];
|
|
oldmap = *mp;
|
|
mp->flags = sp->rwmem|MDF_ACTIVE;
|
|
#if 0
|
|
printf("Wr at offs %d, size %d\n", (int)uio->uio_offset,
|
|
uio->uio_resid);
|
|
#endif
|
|
while (uio->uio_resid && error == 0) {
|
|
mp->card = uio->uio_offset;
|
|
mp->size = PCCARD_MEMSIZE;
|
|
mp->start = (caddr_t)pccard_mem;
|
|
if (error = sp->ctrl->mapmem(sp, win))
|
|
break;
|
|
offs = (unsigned int)uio->uio_offset & (PCCARD_MEMSIZE - 1);
|
|
p = pccard_kmem + offs;
|
|
count = MIN(PCCARD_MEMSIZE - offs, uio->uio_resid);
|
|
#if 0
|
|
printf("Writing %d bytes to address 0x%x\n", count, p);
|
|
#endif
|
|
error = uiomove(p, count, uio);
|
|
}
|
|
/*
|
|
* Restore original map.
|
|
*/
|
|
*mp = oldmap;
|
|
sp->ctrl->mapmem(sp, win);
|
|
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* ioctl calls - allows setting/getting of memory and I/O
|
|
* descriptors, and assignment of drivers.
|
|
*/
|
|
static int
|
|
crdioctl(dev_t dev, int cmd, caddr_t data, int fflag, struct proc *p)
|
|
{
|
|
int s, err;
|
|
struct slot *sp = pccard_slots[minor(dev)];
|
|
struct mem_desc *mp;
|
|
struct io_desc *ip;
|
|
|
|
/* beep is disabled until the 1st call of crdioctl() */
|
|
enable_beep(NULL);
|
|
|
|
if (sp == 0 && cmd != PIOCRWMEM)
|
|
return(ENXIO);
|
|
switch(cmd) {
|
|
default:
|
|
if (sp->ctrl->ioctl)
|
|
return(sp->ctrl->ioctl(sp, cmd, data));
|
|
return(EINVAL);
|
|
case PIOCGSTATE:
|
|
s = splhigh();
|
|
((struct slotstate *)data)->state = sp->state;
|
|
sp->laststate = sp->state;
|
|
splx(s);
|
|
((struct slotstate *)data)->maxmem = sp->ctrl->maxmem;
|
|
((struct slotstate *)data)->maxio = sp->ctrl->maxio;
|
|
((struct slotstate *)data)->irqs = sp->ctrl->irqs;
|
|
break;
|
|
/*
|
|
* Get memory context.
|
|
*/
|
|
case PIOCGMEM:
|
|
s = ((struct mem_desc *)data)->window;
|
|
if (s < 0 || s >= sp->ctrl->maxmem)
|
|
return(EINVAL);
|
|
mp = &sp->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(p->p_ucred, &p->p_acflag))
|
|
return(EPERM);
|
|
if (sp->state != filled)
|
|
return(ENXIO);
|
|
s = ((struct mem_desc *)data)->window;
|
|
if (s < 0 || s >= sp->ctrl->maxmem)
|
|
return(EINVAL);
|
|
sp->mem[s] = *((struct mem_desc *)data);
|
|
return(sp->ctrl->mapmem(sp, s));
|
|
/*
|
|
* Get I/O port context.
|
|
*/
|
|
case PIOCGIO:
|
|
s = ((struct io_desc *)data)->window;
|
|
if (s < 0 || s >= sp->ctrl->maxio)
|
|
return(EINVAL);
|
|
ip = &sp->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(p->p_ucred, &p->p_acflag))
|
|
return(EPERM);
|
|
if (sp->state != filled)
|
|
return(ENXIO);
|
|
s = ((struct io_desc *)data)->window;
|
|
if (s < 0 || s >= sp->ctrl->maxio)
|
|
return(EINVAL);
|
|
sp->io[s] = *((struct io_desc *)data);
|
|
return(sp->ctrl->mapio(sp, s));
|
|
break;
|
|
/*
|
|
* Set memory window flags for read/write interface.
|
|
*/
|
|
case PIOCRWFLAG:
|
|
sp->rwmem = *(int *)data;
|
|
break;
|
|
/*
|
|
* Set the memory window to be used for the read/write
|
|
* interface.
|
|
*/
|
|
case PIOCRWMEM:
|
|
if (*(unsigned long *)data == 0) {
|
|
if (pccard_mem)
|
|
*(unsigned long *)data = pccard_mem;
|
|
break;
|
|
}
|
|
if (suser(p->p_ucred, &p->p_acflag))
|
|
return(EPERM);
|
|
/*
|
|
* Validate the memory by checking it against the I/O
|
|
* memory range. It must also start on an aligned block size.
|
|
*/
|
|
if (invalid_io_memory(*(unsigned long *)data, PCCARD_MEMSIZE))
|
|
return(EINVAL);
|
|
if (*(unsigned long *)data & (PCCARD_MEMSIZE-1))
|
|
return(EINVAL);
|
|
/*
|
|
* Map it to kernel VM.
|
|
*/
|
|
pccard_mem = *(unsigned long *)data;
|
|
pccard_kmem = (unsigned char *)(pccard_mem
|
|
+ atdevbase - 0xA0000);
|
|
break;
|
|
/*
|
|
* Set power values
|
|
*/
|
|
case PIOCSPOW:
|
|
sp->pwr = *(struct power *)data;
|
|
return(sp->ctrl->power(sp));
|
|
/*
|
|
* Allocate a driver to this slot.
|
|
*/
|
|
case PIOCSDRV:
|
|
if (suser(p->p_ucred, &p->p_acflag))
|
|
return(EPERM);
|
|
err = allocate_driver(sp, (struct drv_desc *)data);
|
|
if (!err)
|
|
sysbeep(PCCARD_BEEP_PITCH1, PCCARD_BEEP_DURATION1);
|
|
else
|
|
sysbeep(PCCARD_BEEP_PITCH2, PCCARD_BEEP_DURATION2);
|
|
return err;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* select - Selects on exceptions will return true
|
|
* when a change in card status occurs.
|
|
*/
|
|
static int
|
|
crdselect(dev_t dev, int rw, struct proc *p)
|
|
{
|
|
int s;
|
|
struct slot *sp = pccard_slots[minor(dev)];
|
|
|
|
switch (rw) {
|
|
case FREAD:
|
|
return 1;
|
|
case FWRITE:
|
|
return 1;
|
|
/*
|
|
* select for exception - card event.
|
|
*/
|
|
case 0:
|
|
s = splhigh();
|
|
if (sp == 0 || sp->laststate != sp->state) {
|
|
splx(s);
|
|
return(1);
|
|
}
|
|
selrecord(p, &sp->selp);
|
|
splx(s);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* invalid_io_memory - verify that the ISA I/O memory block
|
|
* is a valid and unallocated address.
|
|
* A simple check of the range is done, and then a
|
|
* search of the current devices is done to check for
|
|
* overlapping regions.
|
|
*/
|
|
static int
|
|
invalid_io_memory(unsigned long adr, int size)
|
|
{
|
|
if (adr < 0xC0000 || (adr+size) > 0x100000)
|
|
return(1);
|
|
return(0);
|
|
}
|
|
|
|
static struct pccard_drv *
|
|
find_driver(char *name)
|
|
{
|
|
struct pccard_drv *dp;
|
|
|
|
for (dp = drivers; dp; dp = dp->next)
|
|
if (strcmp(dp->name, name)==0)
|
|
return(dp);
|
|
return(0);
|
|
}
|
|
|
|
static crd_devsw_installed = 0;
|
|
|
|
static void
|
|
crd_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
|
|
if( ! crd_devsw_installed ) {
|
|
dev = makedev(CDEV_MAJOR, 0);
|
|
cdevsw_add(&dev,&crd_cdevsw, NULL);
|
|
crd_devsw_installed = 1;
|
|
}
|
|
}
|
|
|
|
SYSINIT(crddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,crd_drvinit,NULL)
|