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freebsd-dev/sys/dev/puc/puc.c

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/* $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ */
/*-
* Copyright (c) 2002 JF Hay. All rights reserved.
* Copyright (c) 2000 M. Warner Losh. 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 unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
/*
* Copyright (c) 1996, 1998, 1999
* Christopher G. Demetriou. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* PCI "universal" communication card device driver, glues com, lpt,
* and similar ports to PCI via bridge chip often much larger than
* the devices being glued.
*
* Author: Christopher G. Demetriou, May 14, 1998 (derived from NetBSD
* sys/dev/pci/pciide.c, revision 1.6).
*
* These devices could be (and some times are) described as
* communications/{serial,parallel}, etc. devices with known
* programming interfaces, but those programming interfaces (in
* particular the BAR assignments for devices, etc.) in fact are not
* particularly well defined.
*
* After I/we have seen more of these devices, it may be possible
* to generalize some of these bits. In particular, devices which
* describe themselves as communications/serial/16[45]50, and
* communications/parallel/??? might be attached via direct
* 'com' and 'lpt' attachments to pci.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/puc/pucvar.h>
#include <opt_puc.h>
struct puc_softc {
const struct puc_device_description *sc_desc;
/* card-global dynamic data */
int barmuxed;
int irqrid;
struct resource *irqres;
void *intr_cookie;
struct {
struct resource *res;
} sc_bar_mappings[PUC_MAX_BAR];
/* per-port dynamic data */
struct {
struct device *dev;
/* filled in by bus_setup_intr() */
void (*ihand) __P((void *));
void *ihandarg;
} sc_ports[PUC_MAX_PORTS];
};
struct puc_device {
struct resource_list resources;
u_int serialfreq;
};
static int puc_pci_probe(device_t dev);
static int puc_pci_attach(device_t dev);
static void puc_intr(void *arg);
static struct resource *puc_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
static int puc_release_resource(device_t, device_t, int, int,
struct resource *);
static int puc_get_resource(device_t, device_t, int, int, u_long *, u_long *);
static int puc_setup_intr(device_t, device_t, struct resource *, int,
void (*)(void *), void *, void **);
static int puc_teardown_intr(device_t, device_t, struct resource *,
void *);
static int puc_read_ivar(device_t, device_t, int, uintptr_t *);
static const struct puc_device_description *puc_find_description(uint32_t,
uint32_t, uint32_t, uint32_t);
static void puc_config_superio(device_t);
static void puc_config_win877(struct resource *);
static int puc_find_free_unit(char *);
#ifdef PUC_DEBUG
static void puc_print_win877(bus_space_tag_t, bus_space_handle_t, u_int,
u_int);
static void puc_print_resource_list(struct resource_list *);
#endif
static int
puc_pci_probe(device_t dev)
{
uint32_t v1, v2, d1, d2;
const struct puc_device_description *desc;
if (pci_read_config(dev, PCIR_HEADERTYPE, 1) != 0)
return (ENXIO);
v1 = pci_read_config(dev, PCIR_VENDOR, 2);
d1 = pci_read_config(dev, PCIR_DEVICE, 2);
v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2);
d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2);
desc = puc_find_description(v1, d1, v2, d2);
if (desc == NULL)
return (ENXIO);
device_set_desc(dev, desc->name);
return (0);
}
static int
puc_pci_attach(device_t dev)
{
char *typestr;
int bidx, childunit, i, irq_setup, rid;
uint32_t v1, v2, d1, d2;
struct puc_softc *sc;
struct puc_device *pdev;
struct resource *res;
struct resource_list_entry *rle;
sc = (struct puc_softc *)device_get_softc(dev);
bzero(sc, sizeof(*sc));
v1 = pci_read_config(dev, PCIR_VENDOR, 2);
d1 = pci_read_config(dev, PCIR_DEVICE, 2);
v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2);
d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2);
sc->sc_desc = puc_find_description(v1, d1, v2, d2);
if (sc->sc_desc == NULL)
return (ENXIO);
#ifdef PUC_DEBUG
bootverbose = 1;
printf("puc: name: %s\n", sc->sc_desc->name);
#endif
rid = 0;
res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_ACTIVE | RF_SHAREABLE);
if (!res)
return (ENXIO);
sc->irqres = res;
sc->irqrid = rid;
#ifdef PUC_FASTINTR
irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res,
INTR_TYPE_TTY | INTR_FAST, puc_intr, sc, &sc->intr_cookie);
#else
irq_setup = ENXIO;
#endif
if (irq_setup != 0)
irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res,
INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie);
if (irq_setup != 0)
return (ENXIO);
rid = 0;
for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
if (rid == sc->sc_desc->ports[i].bar)
sc->barmuxed = 1;
rid = sc->sc_desc->ports[i].bar;
bidx = PUC_PORT_BAR_INDEX(rid);
if (sc->sc_bar_mappings[bidx].res != NULL)
continue;
res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0ul, ~0ul, 1, RF_ACTIVE);
if (res == NULL) {
printf("could not get resource\n");
continue;
}
sc->sc_bar_mappings[bidx].res = res;
#ifdef PUC_DEBUG
printf("port bst %x, start %x, end %x\n",
(u_int)rman_get_bustag(res), (u_int)rman_get_start(res),
(u_int)rman_get_end(res));
#endif
}
puc_config_superio(dev);
for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
rid = sc->sc_desc->ports[i].bar;
bidx = PUC_PORT_BAR_INDEX(rid);
if (sc->sc_bar_mappings[bidx].res == NULL)
continue;
switch (sc->sc_desc->ports[i].type) {
case PUC_PORT_TYPE_COM:
typestr = "sio";
break;
default:
continue;
}
pdev = malloc(sizeof(struct puc_device), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (!pdev)
continue;
resource_list_init(&pdev->resources);
/* First fake up an IRQ resource. */
resource_list_add(&pdev->resources, SYS_RES_IRQ, 0,
rman_get_start(sc->irqres), rman_get_end(sc->irqres),
rman_get_end(sc->irqres) - rman_get_start(sc->irqres) + 1);
rle = resource_list_find(&pdev->resources, SYS_RES_IRQ, 0);
rle->res = sc->irqres;
/* Now fake an IOPORT resource */
res = sc->sc_bar_mappings[bidx].res;
resource_list_add(&pdev->resources, SYS_RES_IOPORT, 0,
rman_get_start(res) + sc->sc_desc->ports[i].offset,
rman_get_end(res) + sc->sc_desc->ports[i].offset + 8 - 1,
8);
rle = resource_list_find(&pdev->resources, SYS_RES_IOPORT, 0);
if (sc->barmuxed == 0) {
rle->res = sc->sc_bar_mappings[bidx].res;
} else {
rle->res = malloc(sizeof(struct resource), M_DEVBUF,
M_WAITOK | M_ZERO);
if (rle->res == NULL) {
free(pdev, M_DEVBUF);
return (ENOMEM);
}
rle->res->r_start = rman_get_start(res) +
sc->sc_desc->ports[i].offset;
rle->res->r_end = rle->res->r_start + 8 - 1;
rle->res->r_bustag = rman_get_bustag(res);
bus_space_subregion(rle->res->r_bustag,
rman_get_bushandle(res),
sc->sc_desc->ports[i].offset, 8,
&rle->res->r_bushandle);
}
pdev->serialfreq = sc->sc_desc->ports[i].serialfreq;
childunit = puc_find_free_unit(typestr);
sc->sc_ports[i].dev = device_add_child(dev, typestr, childunit);
if (sc->sc_ports[i].dev == NULL) {
if (sc->barmuxed) {
bus_space_unmap(rman_get_bustag(rle->res),
rman_get_bushandle(rle->res),
8);
free(rle->res, M_DEVBUF);
free(pdev, M_DEVBUF);
}
continue;
}
device_set_ivars(sc->sc_ports[i].dev, pdev);
device_set_desc(sc->sc_ports[i].dev, sc->sc_desc->name);
if (!bootverbose)
device_quiet(sc->sc_ports[i].dev);
#ifdef PUC_DEBUG
printf("puc: type %d, bar %x, offset %x\n",
sc->sc_desc->ports[i].type,
sc->sc_desc->ports[i].bar,
sc->sc_desc->ports[i].offset);
print_resource_list(&pdev->resources);
#endif
if (device_probe_and_attach(sc->sc_ports[i].dev) != 0) {
if (sc->barmuxed) {
bus_space_unmap(rman_get_bustag(rle->res),
rman_get_bushandle(rle->res),
8);
free(rle->res, M_DEVBUF);
free(pdev, M_DEVBUF);
}
}
}
#ifdef PUC_DEBUG
bootverbose = 0;
#endif
return (0);
}
/*
* This is just an brute force interrupt handler. It just calls all the
* registered handlers sequencially.
*
* Later on we should maybe have a different handler for boards that can
* tell us which device generated the interrupt.
*/
static void
puc_intr(void *arg)
{
int i;
struct puc_softc *sc;
sc = (struct puc_softc *)arg;
for (i = 0; i < PUC_MAX_PORTS; i++)
if (sc->sc_ports[i].ihand != NULL)
(sc->sc_ports[i].ihand)(sc->sc_ports[i].ihandarg);
}
static const struct puc_device_description *
puc_find_description(uint32_t vend, uint32_t prod, uint32_t svend,
uint32_t sprod)
{
int i;
#define checkreg(val, index) \
(((val) & puc_devices[i].rmask[(index)]) == puc_devices[i].rval[(index)])
for (i = 0; puc_devices[i].name != NULL; i++) {
if (checkreg(vend, PUC_REG_VEND) &&
checkreg(prod, PUC_REG_PROD) &&
checkreg(svend, PUC_REG_SVEND) &&
checkreg(sprod, PUC_REG_SPROD))
return (&puc_devices[i]);
}
#undef checkreg
return (NULL);
}
/*
* It might be possible to make these more generic if we can detect patterns.
* For instance maybe if the size of a bar is 0x400 (the old isa space) it
* might contain one or more superio chips.
*/
static void
puc_config_superio(device_t dev)
{
struct puc_softc *sc = (struct puc_softc *)device_get_softc(dev);
if (sc->sc_desc->rval[PUC_REG_VEND] == 0x1592 &&
sc->sc_desc->rval[PUC_REG_PROD] == 0x0781)
puc_config_win877(sc->sc_bar_mappings[0].res);
}
#define rdspio(indx) (bus_space_write_1(bst, bsh, efir, indx), \
bus_space_read_1(bst, bsh, efdr))
#define wrspio(indx,data) (bus_space_write_1(bst, bsh, efir, indx), \
bus_space_write_1(bst, bsh, efdr, data))
#ifdef PUC_DEBUG
static void
puc_print_win877(bus_space_tag_t bst, bus_space_handle_t bsh, u_int efir,
u_int efdr)
{
u_char cr00, cr01, cr04, cr09, cr0d, cr14, cr15, cr16, cr17;
u_char cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32;
cr00 = rdspio(0x00);
cr01 = rdspio(0x01);
cr04 = rdspio(0x04);
cr09 = rdspio(0x09);
cr0d = rdspio(0x0d);
cr14 = rdspio(0x14);
cr15 = rdspio(0x15);
cr16 = rdspio(0x16);
cr17 = rdspio(0x17);
cr18 = rdspio(0x18);
cr19 = rdspio(0x19);
cr24 = rdspio(0x24);
cr25 = rdspio(0x25);
cr28 = rdspio(0x28);
cr2c = rdspio(0x2c);
cr31 = rdspio(0x31);
cr32 = rdspio(0x32);
printf("877T: cr00 %x, cr01 %x, cr04 %x, cr09 %x, cr0d %x, cr14 %x, "
"cr15 %x, cr16 %x, cr17 %x, cr18 %x, cr19 %x, cr24 %x, cr25 %x, "
"cr28 %x, cr2c %x, cr31 %x, cr32 %x\n", cr00, cr01, cr04, cr09,
cr0d, cr14, cr15, cr16, cr17,
cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32);
}
#endif
static void
puc_config_win877(struct resource *res)
{
u_char val;
u_int efir, efdr;
bus_space_tag_t bst;
bus_space_handle_t bsh;
bst = rman_get_bustag(res);
bsh = rman_get_bushandle(res);
/* configure the first W83877TF */
bus_space_write_1(bst, bsh, 0x250, 0x89);
efir = 0x251;
efdr = 0x252;
val = rdspio(0x09) & 0x0f;
if (val != 0x0c) {
printf("conf_win877: Oops not a W83877TF\n");
return;
}
#ifdef PUC_DEBUG
printf("before: ");
puc_print_win877(bst, bsh, efir, efdr);
#endif
val = rdspio(0x16);
val |= 0x04;
wrspio(0x16, val);
val &= ~0x04;
wrspio(0x16, val);
wrspio(0x24, 0x2e8 >> 2);
wrspio(0x25, 0x2f8 >> 2);
wrspio(0x17, 0x03);
wrspio(0x28, 0x43);
#ifdef PUC_DEBUG
printf("after: ");
puc_print_win877(bst, bsh, efir, efdr);
#endif
bus_space_write_1(bst, bsh, 0x250, 0xaa);
/* configure the second W83877TF */
bus_space_write_1(bst, bsh, 0x3f0, 0x87);
bus_space_write_1(bst, bsh, 0x3f0, 0x87);
efir = 0x3f0;
efdr = 0x3f1;
val = rdspio(0x09) & 0x0f;
if (val != 0x0c) {
printf("conf_win877: Oops not a W83877TF\n");
return;
}
#ifdef PUC_DEBUG
printf("before: ");
puc_print_win877(bst, bsh, efir, efdr);
#endif
val = rdspio(0x16);
val |= 0x04;
wrspio(0x16, val);
val &= ~0x04;
wrspio(0x16, val);
wrspio(0x24, 0x3e8 >> 2);
wrspio(0x25, 0x3f8 >> 2);
wrspio(0x17, 0x03);
wrspio(0x28, 0x43);
#ifdef PUC_DEBUG
printf("after: ");
puc_print_win877(bst, bsh, efir, efdr);
#endif
bus_space_write_1(bst, bsh, 0x3f0, 0xaa);
}
#undef rdspio
#undef wrspio
static int puc_find_free_unit(char *name)
{
devclass_t dc;
int start;
int unit;
unit = 0;
start = 0;
while (resource_int_value(name, unit, "port", &start) == 0 &&
start > 0)
unit++;
dc = devclass_find(name);
if (dc == NULL)
return (-1);
while (devclass_get_device(dc, unit))
unit++;
#ifdef PUC_DEBUG
printf("puc: Using %s%d\n", name, unit);
#endif
return (unit);
}
#ifdef PUC_DEBUG
static void
puc_print_resource_list(struct resource_list *rl)
{
struct resource_list_entry *rle;
printf("print_resource_list: rl %p\n", rl);
SLIST_FOREACH(rle, rl, link)
printf("type %x, rid %x\n", rle->type, rle->rid);
printf("print_resource_list: end.\n");
}
#endif
static struct resource *
puc_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct puc_device *pdev;
struct resource *retval;
struct resource_list *rl;
struct resource_list_entry *rle;
pdev = device_get_ivars(child);
rl = &pdev->resources;
#ifdef PUC_DEBUG
printf("puc_alloc_resource: pdev %p, looking for t %x, r %x\n",
pdev, type, *rid);
puc_print_resource_list(rl);
#endif
retval = NULL;
rle = resource_list_find(rl, type, *rid);
if (rle) {
start = rle->start;
end = rle->end;
count = rle->count;
#ifdef PUC_DEBUG
printf("found rle, %lx, %lx, %lx\n", start, end, count);
#endif
retval = rle->res;
} else
printf("oops rle is gone\n");
return (retval);
}
static int
puc_release_resource(device_t dev, device_t child, int type, int rid,
struct resource *res)
{
return (0);
}
static int
puc_get_resource(device_t dev, device_t child, int type, int rid,
u_long *startp, u_long *countp)
{
struct puc_device *pdev;
struct resource_list *rl;
struct resource_list_entry *rle;
pdev = device_get_ivars(child);
rl = &pdev->resources;
#ifdef PUC_DEBUG
printf("puc_get_resource: pdev %p, looking for t %x, r %x\n", pdev,
type, rid);
puc_print_resource_list(rl);
#endif
rle = resource_list_find(rl, type, rid);
if (rle) {
#ifdef PUC_DEBUG
printf("found rle %p,", rle);
#endif
if (startp != NULL)
*startp = rle->start;
if (countp != NULL)
*countp = rle->count;
#ifdef PUC_DEBUG
printf(" %lx, %lx\n", rle->start, rle->count);
#endif
return (0);
} else
printf("oops rle is gone\n");
return (ENXIO);
}
static int
puc_setup_intr(device_t dev, device_t child, struct resource *r, int flags,
void (*ihand)(void *), void *arg, void **cookiep)
{
int i;
struct puc_softc *sc;
sc = (struct puc_softc *)device_get_softc(dev);
for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
if (sc->sc_ports[i].dev == child) {
if (sc->sc_ports[i].ihand != 0)
return (ENXIO);
sc->sc_ports[i].ihand = ihand;
sc->sc_ports[i].ihandarg = arg;
*cookiep = arg;
return (0);
}
}
return (ENXIO);
}
static int
puc_teardown_intr(device_t dev, device_t child, struct resource *r,
void *cookie)
{
int i;
struct puc_softc *sc;
sc = (struct puc_softc *)device_get_softc(dev);
for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) {
if (sc->sc_ports[i].dev == child) {
sc->sc_ports[i].ihand = NULL;
sc->sc_ports[i].ihandarg = NULL;
return (0);
}
}
return (ENXIO);
}
static int
puc_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
{
struct puc_device *pdev;
pdev = device_get_ivars(child);
if (pdev == NULL)
return (ENOENT);
switch(index) {
case PUC_IVAR_FREQ:
*result = pdev->serialfreq;
break;
default:
return (ENOENT);
}
return (0);
}
static device_method_t puc_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, puc_pci_probe),
DEVMETHOD(device_attach, puc_pci_attach),
DEVMETHOD(bus_alloc_resource, puc_alloc_resource),
DEVMETHOD(bus_release_resource, puc_release_resource),
DEVMETHOD(bus_get_resource, puc_get_resource),
DEVMETHOD(bus_read_ivar, puc_read_ivar),
DEVMETHOD(bus_setup_intr, puc_setup_intr),
DEVMETHOD(bus_teardown_intr, puc_teardown_intr),
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
{ 0, 0 }
};
static driver_t puc_pci_driver = {
"puc",
puc_pci_methods,
sizeof(struct puc_softc),
};
static devclass_t puc_devclass;
DRIVER_MODULE(puc, pci, puc_pci_driver, puc_devclass, 0, 0);
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