d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

A driver for the System Management Application Program

Browse Source 
Interface (SMAPI) BIOS, which is present on some IBM
Thinkpad models (560, 600, 770 to name a few.)

The SMAPI BIOS provides access to System Information,
System Configuration, and Power Management.
This commit is contained in:
mdodd 2003-01-17 08:10:18 +00:00
parent 67dc3cf7fb
commit def7e1bda0
12 changed files with 1196 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/conf/files.i386
View File

@ -306,6 +306,9 @@ i386/linux/linux_sysent.c optional compat_linux
i386/linux/linux_sysvec.c optional compat_linux
i386/pci/pci_cfgreg.c optional pci
i386/pci/pci_bus.c optional pci
i386/smapi/smapi.c optional smapi isa
i386/smapi/smapi_isa.c optional smapi isa
i386/smapi/smapi_bios.S optional smapi isa
i386/svr4/svr4_locore.s optional compat_svr4 \
dependency "svr4_assym.h" \
warning "COMPAT_SVR4 is broken and should be avoided"

167
sys/i386/bios/smapi.c Normal file
View File

@ -0,0 +1,167 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <machine/smapi.h>
#include <i386/smapi/smapi_var.h>
u_long smapi32_offset;
u_short smapi32_segment;
#define SMAPI32_SEGMENT 0x18
devclass_t smapi_devclass;
static d_open_t smapi_open;
static d_close_t smapi_close;
static d_ioctl_t smapi_ioctl;
#define CDEV_MAJOR 183
static struct cdevsw smapi_cdevsw = {
/* open */ smapi_open,
/* close */ smapi_close,
/* read */ noread,
/* write */ nowrite,
/* ioctl */ smapi_ioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "smapi",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_MEM,
/* kqfilter */ NULL,
};
static int
smapi_open (dev, oflags, devtype, td)
dev_t dev;
int oflags;
int devtype;
d_thread_t * td;
{
return (0);
}
static int
smapi_close (dev, fflag, devtype, td)
dev_t dev;
int fflag;
int devtype;
d_thread_t * td;
{
return (0);
}
static int
smapi_ioctl (dev, cmd, data, fflag, td)
dev_t dev;
u_long cmd;
caddr_t data;
int fflag;
d_thread_t * td;
{
struct smapi_softc *sc;
int error;
error = 0;
sc = devclass_get_softc(smapi_devclass, minor(dev));
if (sc == NULL) {
error = ENXIO;
goto fail;
}
switch (cmd) {
case SMAPIOGHEADER:
bcopy((caddr_t)sc->header, data,
sizeof(struct smapi_bios_header));
error = 0;
break;
case SMAPIOCGFUNCTION:
smapi32_segment = SMAPI32_SEGMENT;
smapi32_offset = sc->smapi32_entry;
error = smapi32((struct smapi_bios_parameter *)data,
(struct smapi_bios_parameter *)data);
break;
default:
error = ENOTTY;
}
fail:
return (error);
}
int
smapi_attach (struct smapi_softc *sc)
{
struct smapi_bios_parameter input_param;
struct smapi_bios_parameter output_param;
int retval;
sc->cdev = make_dev(&smapi_cdevsw,
device_get_unit(sc->dev),
UID_ROOT, GID_WHEEL, 0600,
"%s%d",
smapi_cdevsw.d_name,
device_get_unit(sc->dev));
bzero(&input_param, sizeof(struct smapi_bios_parameter));
bzero(&output_param, sizeof(struct smapi_bios_parameter));
smapi32_segment = SMAPI32_SEGMENT;
smapi32_offset = sc->smapi32_entry;
retval = smapi32(&output_param, &output_param);
#if 0
retval = smapi32_new(sc->smapi32_entry, SMAPI32_SEGMENT,
&output_param, &output_param);
#endif
return (0);
}
int
smapi_detach (struct smapi_softc *sc)
{
destroy_dev(sc->cdev);
return (0);
}

54
sys/i386/bios/smapi_bios.S Normal file
View File

@ -0,0 +1,54 @@
/* $FreeBSD$ */
#include <machine/asmacros.h>
.data
smapi32_segment_tmp: .word 0
smapi32_offset_tmp: .long 0
.text
/*
* smapi32(input_param, output_param)
* struct smapi_bios_parameter *input_parm;
* struct smapi_bios_parameter *output_parm;
*/
ENTRY(smapi32)
pushl %ebp /* Save frame */
movl %esp,%ebp
pushl %ds
pushl 0x0c(%ebp) /* Output Param */
pushl %ds
pushl 0x08(%ebp) /* Input Param */
movl $0,%eax /* Clear EAX (return 0) */
movw %cs,smapi32_segment /* Save CS */
lcall *(smapi32_offset)
leave
ret
/*
* smapi32(offset, segment, input_param, output_param)
* u_int offset;
* u_short segment;
* struct smapi_bios_parameter *input_parm;
* struct smapi_bios_parameter *output_parm;
*/
ENTRY(smapi32_new)
pushl %ebp /* Save frame */
movl 0x08(%esp),%ebp
movl %ebp,smapi32_offset_tmp
movw 0x0c(%esp),%bp
movw %bp,smapi32_segment_tmp
pushl %ds
pushl 0x20(%ebp) /* Output Param */
pushl %ds
pushl 0x10(%ebp) /* Input Param */
movl $0,%eax
movw %cs,smapi32_segment_tmp
lcall *(smapi32_offset_tmp)
leave
ret

274
sys/i386/bios/smapi_isa.c Normal file
View File

@ -0,0 +1,274 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <isa/pnpvar.h>
/* And all this for BIOS_PADDRTOVADDR() */
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <machine/smapi.h>
#include <i386/smapi/smapi_var.h>
static void smapi_isa_identify (driver_t *, device_t);
static int smapi_isa_probe (device_t);
static int smapi_isa_attach (device_t);
static int smapi_isa_detach (device_t);
static int smapi_modevent (module_t, int, void *);
static int smapi_header_cksum (struct smapi_bios_header *);
#define SMAPI_ID 0x0000a24d
static struct isa_pnp_id smapi_ids[] = {
{ SMAPI_ID, NULL }, /* SMB0000 */
{ 0, NULL },
};
#define SMAPI_START 0xf0000
#define SMAPI_END 0xffff0
#define SMAPI_STEP 0x10
#define SMAPI_SIGNATURE(h) ((h->signature[0] == '$') && \
(h->signature[1] == 'S') && \
(h->signature[2] == 'M') && \
(h->signature[3] == 'B'))
static void
smapi_isa_identify (driver_t *driver, device_t parent)
{
device_t child;
struct resource *res;
struct smapi_bios_header *header;
u_int32_t chunk;
int rid;
rid = 0;
chunk = SMAPI_START;
child = BUS_ADD_CHILD(parent, ISA_ORDER_SENSITIVE, "smapi", -1);
device_set_driver(child, driver);
isa_set_logicalid(child, SMAPI_ID);
isa_set_vendorid(child, SMAPI_ID);
while (chunk < SMAPI_END) {
bus_set_resource(child, SYS_RES_MEMORY, rid, chunk,
sizeof(struct smapi_bios_header));
res = bus_alloc_resource(child, SYS_RES_MEMORY, &rid,
0ul, ~0ul, 1, RF_ACTIVE);
if (res == NULL) {
bus_delete_resource(child, SYS_RES_MEMORY, rid);
chunk += SMAPI_STEP;
continue;
}
header = (struct smapi_bios_header *)rman_get_virtual(res);
if (SMAPI_SIGNATURE(header)) {
if (smapi_header_cksum(header)) {
device_printf(child, "SMAPI header checksum failed.\n");
} else {
goto found;
}
} else {
bus_release_resource(child, SYS_RES_MEMORY, rid, res);
bus_delete_resource(child, SYS_RES_MEMORY, rid);
}
chunk += SMAPI_STEP;
}
device_delete_child(parent, child);
return;
found:
device_set_desc(child, "SMAPI BIOS");
return;
}
static int
smapi_isa_probe (device_t dev)
{
return (ISA_PNP_PROBE(device_get_parent(dev), dev, smapi_ids));
}
static int
smapi_isa_attach (device_t dev)
{
struct smapi_softc *sc;
int error;
sc = device_get_softc(dev);
error = 0;
sc->dev = dev;
sc->rid = 0;
sc->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->rid,
0ul, ~0ul, 1, RF_ACTIVE);
if (sc->res == NULL) {
device_printf(dev, "Unable to allocate memory resource.\n");
error = ENOMEM;
goto bad;
}
sc->header = (struct smapi_bios_header *)rman_get_virtual(sc->res);
sc->smapi32_entry = (u_int32_t)BIOS_PADDRTOVADDR(
sc->header->prot32_segment +
sc->header->prot32_offset);
if (smapi_header_cksum(sc->header)) {
device_printf(dev, "SMAPI header checksum failed.\n");
error = ENXIO;
goto bad;
}
if (smapi_attach(sc)) {
device_printf(dev, "SMAPI attach failed.\n");
error = ENXIO;
goto bad;
}
device_printf(dev, "Version %02d.%02d, Length %d, Checksum 0x%02x\n",
sc->header->version_major, sc->header->version_minor,
sc->header->length, sc->header->checksum);
device_printf(dev, "Information=0x%b\n",
sc->header->information,
"\020"
"\001REAL_VM86"
"\002PROTECTED_16"
"\003PROTECTED_32");
if (bootverbose) {
if (sc->header->information & SMAPI_REAL_VM86)
device_printf(dev, "Real/VM86 mode: Segment 0x%04x, Offset 0x%04x\n",
sc->header->real16_segment,
sc->header->real16_offset);
if (sc->header->information & SMAPI_PROT_16BIT)
device_printf(dev, "16-bit Protected mode: Segment 0x%08x, Offset 0x%04x\n",
sc->header->prot16_segment,
sc->header->prot16_offset);
if (sc->header->information & SMAPI_PROT_32BIT)
device_printf(dev, "32-bit Protected mode: Segment 0x%08x, Offset 0x%08x\n",
sc->header->prot32_segment,
sc->header->prot32_offset);
}
return (0);
bad:
if (sc->res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
return (error);
}
static int
smapi_isa_detach (device_t dev)
{
struct smapi_softc *sc;
sc = device_get_softc(dev);
(void)smapi_detach(sc);
if (sc->res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
return (0);
}
static int
smapi_modevent (mod, what, arg)
module_t mod;
int what;
void * arg;
{
device_t * devs;
int count;
int i;
switch (what) {
case MOD_LOAD:
break;
case MOD_UNLOAD:
devclass_get_devices(smapi_devclass, &devs, &count);
for (i = 0; i < count; i++) {
device_delete_child(device_get_parent(devs[i]), devs[i]);
}
break;
default:
break;
}
return (0);
}
static device_method_t smapi_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, smapi_isa_identify),
DEVMETHOD(device_probe, smapi_isa_probe),
DEVMETHOD(device_attach, smapi_isa_attach),
DEVMETHOD(device_detach, smapi_isa_detach),
{ 0, 0 }
};
static driver_t smapi_driver = {
"smapi",
smapi_methods,
sizeof(struct smapi_softc),
};
DRIVER_MODULE(smapi, isa, smapi_driver, smapi_devclass, smapi_modevent, 0);
MODULE_VERSION(smapi, 1);
static int
smapi_header_cksum (struct smapi_bios_header *header)
{
u_int8_t *ptr;
u_int8_t cksum;
int i;
ptr = (u_int8_t *)header;
cksum = 0;
for (i = 0; i < header->length; i++) {
cksum += ptr[i];
}
return (cksum);
}

51
sys/i386/bios/smapi_var.h Normal file
View File

@ -0,0 +1,51 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
struct smapi_softc {
dev_t cdev;
device_t dev;
struct resource * res;
int rid;
u_int32_t smapi32_entry;
struct smapi_bios_header *header;
};
extern u_long smapi32_offset;
extern u_short smapi32_segment;
extern devclass_t smapi_devclass;
int smapi_attach (struct smapi_softc *);
int smapi_detach (struct smapi_softc *);
extern int smapi32 (struct smapi_bios_parameter *,
struct smapi_bios_parameter *);
extern int smapi32_new (u_long, u_short,
struct smapi_bios_parameter *,
struct smapi_bios_parameter *);

91
sys/i386/include/smapi.h Normal file
View File

@ -0,0 +1,91 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@freebsd.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_SMAPI_H_
#define _MACHINE_SMAPI_H_
#ifndef _KERNEL
#include <sys/types.h>
#endif
#include <sys/ioccom.h>
struct smapi_bios_header {
u_int8_t signature[4]; /* '$SMB' */
u_int8_t version_major;
u_int8_t version_minor;
u_int8_t length;
u_int8_t checksum;
u_int16_t information;
#define SMAPI_REAL_VM86 0x0001
#define SMAPI_PROT_16BIT 0x0002
#define SMAPI_PROT_32BIT 0x0004
u_int16_t reserved1;
u_int16_t real16_offset;
u_int16_t real16_segment;
u_int16_t reserved2;
u_int16_t prot16_offset;
u_int32_t prot16_segment;
u_int32_t prot32_offset;
u_int32_t prot32_segment;
};
struct smapi_bios_parameter {
union {
struct {
u_int8_t func;
u_int8_t sub_func;
} in;
struct {
u_int8_t rc;
u_int8_t sub_rc;
} out;
} type;
u_int16_t param1;
u_int16_t param2;
u_int16_t param3;
u_int32_t param4;
u_int32_t param5;
};
#define cmd_func type.in.func
#define cmd_sub_func type.in.sub_func
#define rsp_rc type.out.rc
#define rsp_sub_rc type.out.sub_rc
#define SMAPIOGHEADER _IOR('$', 0, struct smapi_bios_header)
#define SMAPIOCGFUNCTION _IOWR('$', 1, struct smapi_bios_parameter)
#endif /* _MACHINE_SMAPI_H_ */

167
sys/i386/smapi/smapi.c Normal file
View File

@ -0,0 +1,167 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <machine/smapi.h>
#include <i386/smapi/smapi_var.h>
u_long smapi32_offset;
u_short smapi32_segment;
#define SMAPI32_SEGMENT 0x18
devclass_t smapi_devclass;
static d_open_t smapi_open;
static d_close_t smapi_close;
static d_ioctl_t smapi_ioctl;
#define CDEV_MAJOR 183
static struct cdevsw smapi_cdevsw = {
/* open */ smapi_open,
/* close */ smapi_close,
/* read */ noread,
/* write */ nowrite,
/* ioctl */ smapi_ioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "smapi",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_MEM,
/* kqfilter */ NULL,
};
static int
smapi_open (dev, oflags, devtype, td)
dev_t dev;
int oflags;
int devtype;
d_thread_t * td;
{
return (0);
}
static int
smapi_close (dev, fflag, devtype, td)
dev_t dev;
int fflag;
int devtype;
d_thread_t * td;
{
return (0);
}
static int
smapi_ioctl (dev, cmd, data, fflag, td)
dev_t dev;
u_long cmd;
caddr_t data;
int fflag;
d_thread_t * td;
{
struct smapi_softc *sc;
int error;
error = 0;
sc = devclass_get_softc(smapi_devclass, minor(dev));
if (sc == NULL) {
error = ENXIO;
goto fail;
}
switch (cmd) {
case SMAPIOGHEADER:
bcopy((caddr_t)sc->header, data,
sizeof(struct smapi_bios_header));
error = 0;
break;
case SMAPIOCGFUNCTION:
smapi32_segment = SMAPI32_SEGMENT;
smapi32_offset = sc->smapi32_entry;
error = smapi32((struct smapi_bios_parameter *)data,
(struct smapi_bios_parameter *)data);
break;
default:
error = ENOTTY;
}
fail:
return (error);
}
int
smapi_attach (struct smapi_softc *sc)
{
struct smapi_bios_parameter input_param;
struct smapi_bios_parameter output_param;
int retval;
sc->cdev = make_dev(&smapi_cdevsw,
device_get_unit(sc->dev),
UID_ROOT, GID_WHEEL, 0600,
"%s%d",
smapi_cdevsw.d_name,
device_get_unit(sc->dev));
bzero(&input_param, sizeof(struct smapi_bios_parameter));
bzero(&output_param, sizeof(struct smapi_bios_parameter));
smapi32_segment = SMAPI32_SEGMENT;
smapi32_offset = sc->smapi32_entry;
retval = smapi32(&output_param, &output_param);
#if 0
retval = smapi32_new(sc->smapi32_entry, SMAPI32_SEGMENT,
&output_param, &output_param);
#endif
return (0);
}
int
smapi_detach (struct smapi_softc *sc)
{
destroy_dev(sc->cdev);
return (0);
}

54
sys/i386/smapi/smapi_bios.S Normal file
View File

@ -0,0 +1,54 @@
/* $FreeBSD$ */
#include <machine/asmacros.h>
.data
smapi32_segment_tmp: .word 0
smapi32_offset_tmp: .long 0
.text
/*
* smapi32(input_param, output_param)
* struct smapi_bios_parameter *input_parm;
* struct smapi_bios_parameter *output_parm;
*/
ENTRY(smapi32)
pushl %ebp /* Save frame */
movl %esp,%ebp
pushl %ds
pushl 0x0c(%ebp) /* Output Param */
pushl %ds
pushl 0x08(%ebp) /* Input Param */
movl $0,%eax /* Clear EAX (return 0) */
movw %cs,smapi32_segment /* Save CS */
lcall *(smapi32_offset)
leave
ret
/*
* smapi32(offset, segment, input_param, output_param)
* u_int offset;
* u_short segment;
* struct smapi_bios_parameter *input_parm;
* struct smapi_bios_parameter *output_parm;
*/
ENTRY(smapi32_new)
pushl %ebp /* Save frame */
movl 0x08(%esp),%ebp
movl %ebp,smapi32_offset_tmp
movw 0x0c(%esp),%bp
movw %bp,smapi32_segment_tmp
pushl %ds
pushl 0x20(%ebp) /* Output Param */
pushl %ds
pushl 0x10(%ebp) /* Input Param */
movl $0,%eax
movw %cs,smapi32_segment_tmp
lcall *(smapi32_offset_tmp)
leave
ret

274
sys/i386/smapi/smapi_isa.c Normal file
View File

@ -0,0 +1,274 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <isa/pnpvar.h>
/* And all this for BIOS_PADDRTOVADDR() */
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <machine/smapi.h>
#include <i386/smapi/smapi_var.h>
static void smapi_isa_identify (driver_t *, device_t);
static int smapi_isa_probe (device_t);
static int smapi_isa_attach (device_t);
static int smapi_isa_detach (device_t);
static int smapi_modevent (module_t, int, void *);
static int smapi_header_cksum (struct smapi_bios_header *);
#define SMAPI_ID 0x0000a24d
static struct isa_pnp_id smapi_ids[] = {
{ SMAPI_ID, NULL }, /* SMB0000 */
{ 0, NULL },
};
#define SMAPI_START 0xf0000
#define SMAPI_END 0xffff0
#define SMAPI_STEP 0x10
#define SMAPI_SIGNATURE(h) ((h->signature[0] == '$') && \
(h->signature[1] == 'S') && \
(h->signature[2] == 'M') && \
(h->signature[3] == 'B'))
static void
smapi_isa_identify (driver_t *driver, device_t parent)
{
device_t child;
struct resource *res;
struct smapi_bios_header *header;
u_int32_t chunk;
int rid;
rid = 0;
chunk = SMAPI_START;
child = BUS_ADD_CHILD(parent, ISA_ORDER_SENSITIVE, "smapi", -1);
device_set_driver(child, driver);
isa_set_logicalid(child, SMAPI_ID);
isa_set_vendorid(child, SMAPI_ID);
while (chunk < SMAPI_END) {
bus_set_resource(child, SYS_RES_MEMORY, rid, chunk,
sizeof(struct smapi_bios_header));
res = bus_alloc_resource(child, SYS_RES_MEMORY, &rid,
0ul, ~0ul, 1, RF_ACTIVE);
if (res == NULL) {
bus_delete_resource(child, SYS_RES_MEMORY, rid);
chunk += SMAPI_STEP;
continue;
}
header = (struct smapi_bios_header *)rman_get_virtual(res);
if (SMAPI_SIGNATURE(header)) {
if (smapi_header_cksum(header)) {
device_printf(child, "SMAPI header checksum failed.\n");
} else {
goto found;
}
} else {
bus_release_resource(child, SYS_RES_MEMORY, rid, res);
bus_delete_resource(child, SYS_RES_MEMORY, rid);
}
chunk += SMAPI_STEP;
}
device_delete_child(parent, child);
return;
found:
device_set_desc(child, "SMAPI BIOS");
return;
}
static int
smapi_isa_probe (device_t dev)
{
return (ISA_PNP_PROBE(device_get_parent(dev), dev, smapi_ids));
}
static int
smapi_isa_attach (device_t dev)
{
struct smapi_softc *sc;
int error;
sc = device_get_softc(dev);
error = 0;
sc->dev = dev;
sc->rid = 0;
sc->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->rid,
0ul, ~0ul, 1, RF_ACTIVE);
if (sc->res == NULL) {
device_printf(dev, "Unable to allocate memory resource.\n");
error = ENOMEM;
goto bad;
}
sc->header = (struct smapi_bios_header *)rman_get_virtual(sc->res);
sc->smapi32_entry = (u_int32_t)BIOS_PADDRTOVADDR(
sc->header->prot32_segment +
sc->header->prot32_offset);
if (smapi_header_cksum(sc->header)) {
device_printf(dev, "SMAPI header checksum failed.\n");
error = ENXIO;
goto bad;
}
if (smapi_attach(sc)) {
device_printf(dev, "SMAPI attach failed.\n");
error = ENXIO;
goto bad;
}
device_printf(dev, "Version %02d.%02d, Length %d, Checksum 0x%02x\n",
sc->header->version_major, sc->header->version_minor,
sc->header->length, sc->header->checksum);
device_printf(dev, "Information=0x%b\n",
sc->header->information,
"\020"
"\001REAL_VM86"
"\002PROTECTED_16"
"\003PROTECTED_32");
if (bootverbose) {
if (sc->header->information & SMAPI_REAL_VM86)
device_printf(dev, "Real/VM86 mode: Segment 0x%04x, Offset 0x%04x\n",
sc->header->real16_segment,
sc->header->real16_offset);
if (sc->header->information & SMAPI_PROT_16BIT)
device_printf(dev, "16-bit Protected mode: Segment 0x%08x, Offset 0x%04x\n",
sc->header->prot16_segment,
sc->header->prot16_offset);
if (sc->header->information & SMAPI_PROT_32BIT)
device_printf(dev, "32-bit Protected mode: Segment 0x%08x, Offset 0x%08x\n",
sc->header->prot32_segment,
sc->header->prot32_offset);
}
return (0);
bad:
if (sc->res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
return (error);
}
static int
smapi_isa_detach (device_t dev)
{
struct smapi_softc *sc;
sc = device_get_softc(dev);
(void)smapi_detach(sc);
if (sc->res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
return (0);
}
static int
smapi_modevent (mod, what, arg)
module_t mod;
int what;
void * arg;
{
device_t * devs;
int count;
int i;
switch (what) {
case MOD_LOAD:
break;
case MOD_UNLOAD:
devclass_get_devices(smapi_devclass, &devs, &count);
for (i = 0; i < count; i++) {
device_delete_child(device_get_parent(devs[i]), devs[i]);
}
break;
default:
break;
}
return (0);
}
static device_method_t smapi_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, smapi_isa_identify),
DEVMETHOD(device_probe, smapi_isa_probe),
DEVMETHOD(device_attach, smapi_isa_attach),
DEVMETHOD(device_detach, smapi_isa_detach),
{ 0, 0 }
};
static driver_t smapi_driver = {
"smapi",
smapi_methods,
sizeof(struct smapi_softc),
};
DRIVER_MODULE(smapi, isa, smapi_driver, smapi_devclass, smapi_modevent, 0);
MODULE_VERSION(smapi, 1);
static int
smapi_header_cksum (struct smapi_bios_header *header)
{
u_int8_t *ptr;
u_int8_t cksum;
int i;
ptr = (u_int8_t *)header;
cksum = 0;
for (i = 0; i < header->length; i++) {
cksum += ptr[i];
}
return (cksum);
}

51
sys/i386/smapi/smapi_var.h Normal file
View File

@ -0,0 +1,51 @@
/*-
* Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
struct smapi_softc {
dev_t cdev;
device_t dev;
struct resource * res;
int rid;
u_int32_t smapi32_entry;
struct smapi_bios_header *header;
};
extern u_long smapi32_offset;
extern u_short smapi32_segment;
extern devclass_t smapi_devclass;
int smapi_attach (struct smapi_softc *);
int smapi_detach (struct smapi_softc *);
extern int smapi32 (struct smapi_bios_parameter *,
struct smapi_bios_parameter *);
extern int smapi32_new (u_long, u_short,
struct smapi_bios_parameter *,
struct smapi_bios_parameter *);

1
sys/modules/Makefile
View File

@ -211,6 +211,7 @@ SUBDIR+=aac \
iir \
mly \
s3 \
smapi \
vesa
.elif ${MACHINE} == "pc98"

9
sys/modules/smapi/Makefile Normal file
View File

@ -0,0 +1,9 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../i386/smapi
KMOD= smapi
SRCS= smapi_isa.c smapi.c smapi_bios.S \
bus_if.h device_if.h isa_if.h
.include <bsd.kmod.mk>