freebsd-dev/sys/amd64/isa/isa.c

615 lines
16 KiB
C
Raw Normal View History

1993-06-12 14:58:17 +00:00
/*-
* Copyright (c) 1998 Doug Rabson
1993-06-12 14:58:17 +00:00
* 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
1993-06-12 14:58:17 +00:00
* 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
1993-06-12 14:58:17 +00:00
* 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.
*
* $Id: isa.c,v 1.124 1999/05/08 21:28:39 peter Exp $
1993-06-12 14:58:17 +00:00
*/
/*
* Modifications for Intel architecture by Garrett A. Wollman.
* Copyright 1998 Massachusetts Institute of Technology
1993-06-12 14:58:17 +00:00
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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.
1993-06-12 14:58:17 +00:00
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
1993-06-12 14:58:17 +00:00
#include <isa/isavar.h>
1993-06-12 14:58:17 +00:00
MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
1993-06-12 14:58:17 +00:00
/*
* The structure used to attach devices to the isa bus.
1993-06-12 14:58:17 +00:00
*/
struct isa_device {
int id_port[ISA_NPORT_IVARS];
u_short id_portsize[ISA_NPORT_IVARS];
vm_offset_t id_maddr[ISA_NMEM_IVARS];
vm_size_t id_msize[ISA_NMEM_IVARS];
int id_irq[ISA_NIRQ_IVARS];
int id_drq[ISA_NDRQ_IVARS];
int id_flags;
struct resource *id_portres[ISA_NPORT_IVARS];
struct resource *id_memres[ISA_NMEM_IVARS];
struct resource *id_irqres[ISA_NIRQ_IVARS];
struct resource *id_drqres[ISA_NDRQ_IVARS];
};
#define DEVTOISA(dev) ((struct isa_device *) device_get_ivars(dev))
static devclass_t isa_devclass;
Bruce Evans' dynamic interrupt support. /usr/src/sys/i386/isa/clock.c: o Garrett's statclock changes. o Wire xxxintr, not Vclk. o Wire using register_intr(), not setidt(). /usr/src/sys/i386/isa/icu.s: o Garrett's statclock changes. o Removed unused variable high_imask. o Fake int 8 for rtc as well as int 0 for clk. Required for kernel profiling with statclock, harmless otherwise. /usr/src/sys/i386/isa/isa.c: o Allow isdp->id_irq and other things in *isdp to be changed by probes. Changing interrupts later requires direct calls to register_intr() and unregister_intr() and more care. ALLOW_CONFLICT_* is brought over from 1.1.5, except ALLOW_CONFLICT_IRQ is not supported. IRQ conflict checking is delayed until after probing so that drivers can change the IRQ to a free one; real conflicts require more cooperation between drivers to handle. o Too many details to list. o This file requires splitting and a lot more work. /usr/src/sys/i386/isa/isa_device.h: o Declare more things more completely. /usr/src/sys/i386/isa/sio.c: o Prepare to register interrupt handlers as fast. /usr/src/sys/i386/isa/vector.s: o Generate entry code for 16 fast interrupt handlers and 16 normal interrupt handlers. Changed some constants to variables: # $unit is now intr_unit[intr]. Type is int. Someday it should be a cookie suitable for the handler (e.g., a struct com_s for sio). # $handler is now intr_handler[intr]. # intrcnt_actv[id_num] is now *intr_countp[intr]. The indirection is required to get a contiguous range of counters for vmstat and so that the drivers depend more in the driver than on the interrupt number (drivers could take turns using an interrupt and the counts would remain correct). There is a separate counter for each device and for each stray interrupt. In 1.1.5, stray interrupt 7 clobbers the count for device 7 or something worse if there is no device 7 :-(. # mask is now intr_mask[intr] (was already indirect). o Entry points are now _XintrI and _XfastintrI (I = intr = 0-15), not _VdevU (U = unit). o Removed BUILD_VECTORS stuff. There's a trace of it left for the string table for vmstat but config now generates the string in one piece because nothing more is required. o Removed old handling of stray interrupts and older comments about it. Submitted by: Bruce Evans
1994-08-18 05:09:36 +00:00
static void
isa_add_device(device_t dev, const char *name, int unit)
ALL: Removed patch kit headers and rcsid strings, add $Id$. isa.c: Removed old #ifdef notyet isa_configure code, since it will never be used, and I have done 90% of what it attempted to. Add conflict checking code that searchs back through the devtab's looking for any device that has already been found that may conflict with what we are about to probe. Checks are mode for I/O address, memory address, IRQ, and DRQ. This should stop the screwing up of any device that has alread been found by other device probes. Print out messages when we are not going to probe a device due to a conflict so the user knows WHY something was not found. For example: aha0 not probed due to irq conflict with ahb0 at 11 Now print out a message when a device is not found so the user knows that it was probed for, but could not be found. For example: ed1 not found at 0x320 For devices that have I/O address < 0x100 say that they are on the motherboard, not on isa! The 0x100 magic number is per ISA spec. It may seem funny that pc0 and sc0 report as being on the motherboard, but this is due to the fact that the I/O address used is that of the keyboard controller which IS on the motherboard. We really need to split the keyboard probe from the display probe. It is completly legal to build a pc with out one or the other, or even with out both! npx.c: Return -1 from the probe routine if we are using the Emulator so that the i/o addresses are not printed, this is the same trick used for 486's. Do not print the ``Errors reported via Exception 16'', and ``Errors reported via IRQ 13'' messages any more, since these just lead to more user confusion that anything. It still prints the message ``Error reporting broken, using 387 emulator'' so that the person is aware that there mother board is ill.
1993-10-13 15:59:30 +00:00
{
struct isa_device *idev;
device_t child;
int sensitive, t;
static device_t last_sensitive;
1993-06-12 14:58:17 +00:00
/* device-specific flag overrides any wildcard */
sensitive = 0;
if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
resource_int_value(name, -1, "sensitive", &sensitive);
Bruce Evans' dynamic interrupt support. /usr/src/sys/i386/isa/clock.c: o Garrett's statclock changes. o Wire xxxintr, not Vclk. o Wire using register_intr(), not setidt(). /usr/src/sys/i386/isa/icu.s: o Garrett's statclock changes. o Removed unused variable high_imask. o Fake int 8 for rtc as well as int 0 for clk. Required for kernel profiling with statclock, harmless otherwise. /usr/src/sys/i386/isa/isa.c: o Allow isdp->id_irq and other things in *isdp to be changed by probes. Changing interrupts later requires direct calls to register_intr() and unregister_intr() and more care. ALLOW_CONFLICT_* is brought over from 1.1.5, except ALLOW_CONFLICT_IRQ is not supported. IRQ conflict checking is delayed until after probing so that drivers can change the IRQ to a free one; real conflicts require more cooperation between drivers to handle. o Too many details to list. o This file requires splitting and a lot more work. /usr/src/sys/i386/isa/isa_device.h: o Declare more things more completely. /usr/src/sys/i386/isa/sio.c: o Prepare to register interrupt handlers as fast. /usr/src/sys/i386/isa/vector.s: o Generate entry code for 16 fast interrupt handlers and 16 normal interrupt handlers. Changed some constants to variables: # $unit is now intr_unit[intr]. Type is int. Someday it should be a cookie suitable for the handler (e.g., a struct com_s for sio). # $handler is now intr_handler[intr]. # intrcnt_actv[id_num] is now *intr_countp[intr]. The indirection is required to get a contiguous range of counters for vmstat and so that the drivers depend more in the driver than on the interrupt number (drivers could take turns using an interrupt and the counts would remain correct). There is a separate counter for each device and for each stray interrupt. In 1.1.5, stray interrupt 7 clobbers the count for device 7 or something worse if there is no device 7 :-(. # mask is now intr_mask[intr] (was already indirect). o Entry points are now _XintrI and _XfastintrI (I = intr = 0-15), not _VdevU (U = unit). o Removed BUILD_VECTORS stuff. There's a trace of it left for the string table for vmstat but config now generates the string in one piece because nothing more is required. o Removed old handling of stray interrupts and older comments about it. Submitted by: Bruce Evans
1994-08-18 05:09:36 +00:00
idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT);
if (!idev)
return;
bzero(idev, sizeof *idev);
if (resource_int_value(name, unit, "port", &t) == 0)
idev->id_port[0] = t;
else
idev->id_port[0] = -1;
idev->id_port[1] = 0;
1993-06-12 14:58:17 +00:00
if (resource_int_value(name, unit, "portsize", &t) == 0)
idev->id_portsize[0] = t;
else
idev->id_portsize[0] = 0;
idev->id_portsize[1] = 0;
if (resource_int_value(name, unit, "maddr", &t) == 0)
idev->id_maddr[0] = t;
else
idev->id_maddr[0] = 0;
idev->id_maddr[1] = 0;
if (resource_int_value(name, unit, "msize", &t) == 0)
idev->id_msize[0] = t;
else
idev->id_msize[0] = 0;
idev->id_msize[1] = 0;
if (resource_int_value(name, unit, "flags", &t) == 0)
idev->id_flags = t;
else
idev->id_flags = 0;
if (resource_int_value(name, unit, "irq", &t) == 0)
idev->id_irq[0] = t;
else
idev->id_irq[0] = -1;
idev->id_irq[1] = -1;
if (resource_int_value(name, unit, "drq", &t) == 0)
idev->id_drq[0] = t;
else
idev->id_drq[0] = -1;
idev->id_drq[1] = -1;
1993-06-12 14:58:17 +00:00
if (sensitive)
child = device_add_child_after(dev, last_sensitive, name,
unit, idev);
else
child = device_add_child(dev, name, unit, idev);
if (child == 0)
return;
else if (sensitive)
last_sensitive = child;
if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
device_disable(child);
1993-06-12 14:58:17 +00:00
}
ALL: Removed patch kit headers and rcsid strings, add $Id$. isa.c: Removed old #ifdef notyet isa_configure code, since it will never be used, and I have done 90% of what it attempted to. Add conflict checking code that searchs back through the devtab's looking for any device that has already been found that may conflict with what we are about to probe. Checks are mode for I/O address, memory address, IRQ, and DRQ. This should stop the screwing up of any device that has alread been found by other device probes. Print out messages when we are not going to probe a device due to a conflict so the user knows WHY something was not found. For example: aha0 not probed due to irq conflict with ahb0 at 11 Now print out a message when a device is not found so the user knows that it was probed for, but could not be found. For example: ed1 not found at 0x320 For devices that have I/O address < 0x100 say that they are on the motherboard, not on isa! The 0x100 magic number is per ISA spec. It may seem funny that pc0 and sc0 report as being on the motherboard, but this is due to the fact that the I/O address used is that of the keyboard controller which IS on the motherboard. We really need to split the keyboard probe from the display probe. It is completly legal to build a pc with out one or the other, or even with out both! npx.c: Return -1 from the probe routine if we are using the Emulator so that the i/o addresses are not printed, this is the same trick used for 486's. Do not print the ``Errors reported via Exception 16'', and ``Errors reported via IRQ 13'' messages any more, since these just lead to more user confusion that anything. It still prints the message ``Error reporting broken, using 387 emulator'' so that the person is aware that there mother board is ill.
1993-10-13 15:59:30 +00:00
1993-06-12 14:58:17 +00:00
/*
* At 'probe' time, we add all the devices which we know about to the
* bus. The generic attach routine will probe and attach them if they
* are alive.
1993-06-12 14:58:17 +00:00
*/
static int
isa_probe(device_t dev)
{
int i;
static char buf[] = "isaXXX";
1993-06-12 14:58:17 +00:00
device_set_desc(dev, "ISA bus");
Bruce Evans' dynamic interrupt support. /usr/src/sys/i386/isa/clock.c: o Garrett's statclock changes. o Wire xxxintr, not Vclk. o Wire using register_intr(), not setidt(). /usr/src/sys/i386/isa/icu.s: o Garrett's statclock changes. o Removed unused variable high_imask. o Fake int 8 for rtc as well as int 0 for clk. Required for kernel profiling with statclock, harmless otherwise. /usr/src/sys/i386/isa/isa.c: o Allow isdp->id_irq and other things in *isdp to be changed by probes. Changing interrupts later requires direct calls to register_intr() and unregister_intr() and more care. ALLOW_CONFLICT_* is brought over from 1.1.5, except ALLOW_CONFLICT_IRQ is not supported. IRQ conflict checking is delayed until after probing so that drivers can change the IRQ to a free one; real conflicts require more cooperation between drivers to handle. o Too many details to list. o This file requires splitting and a lot more work. /usr/src/sys/i386/isa/isa_device.h: o Declare more things more completely. /usr/src/sys/i386/isa/sio.c: o Prepare to register interrupt handlers as fast. /usr/src/sys/i386/isa/vector.s: o Generate entry code for 16 fast interrupt handlers and 16 normal interrupt handlers. Changed some constants to variables: # $unit is now intr_unit[intr]. Type is int. Someday it should be a cookie suitable for the handler (e.g., a struct com_s for sio). # $handler is now intr_handler[intr]. # intrcnt_actv[id_num] is now *intr_countp[intr]. The indirection is required to get a contiguous range of counters for vmstat and so that the drivers depend more in the driver than on the interrupt number (drivers could take turns using an interrupt and the counts would remain correct). There is a separate counter for each device and for each stray interrupt. In 1.1.5, stray interrupt 7 clobbers the count for device 7 or something worse if there is no device 7 :-(. # mask is now intr_mask[intr] (was already indirect). o Entry points are now _XintrI and _XfastintrI (I = intr = 0-15), not _VdevU (U = unit). o Removed BUILD_VECTORS stuff. There's a trace of it left for the string table for vmstat but config now generates the string in one piece because nothing more is required. o Removed old handling of stray interrupts and older comments about it. Submitted by: Bruce Evans
1994-08-18 05:09:36 +00:00
/*
* Add all devices configured to be attached to isa0.
Bruce Evans' dynamic interrupt support. /usr/src/sys/i386/isa/clock.c: o Garrett's statclock changes. o Wire xxxintr, not Vclk. o Wire using register_intr(), not setidt(). /usr/src/sys/i386/isa/icu.s: o Garrett's statclock changes. o Removed unused variable high_imask. o Fake int 8 for rtc as well as int 0 for clk. Required for kernel profiling with statclock, harmless otherwise. /usr/src/sys/i386/isa/isa.c: o Allow isdp->id_irq and other things in *isdp to be changed by probes. Changing interrupts later requires direct calls to register_intr() and unregister_intr() and more care. ALLOW_CONFLICT_* is brought over from 1.1.5, except ALLOW_CONFLICT_IRQ is not supported. IRQ conflict checking is delayed until after probing so that drivers can change the IRQ to a free one; real conflicts require more cooperation between drivers to handle. o Too many details to list. o This file requires splitting and a lot more work. /usr/src/sys/i386/isa/isa_device.h: o Declare more things more completely. /usr/src/sys/i386/isa/sio.c: o Prepare to register interrupt handlers as fast. /usr/src/sys/i386/isa/vector.s: o Generate entry code for 16 fast interrupt handlers and 16 normal interrupt handlers. Changed some constants to variables: # $unit is now intr_unit[intr]. Type is int. Someday it should be a cookie suitable for the handler (e.g., a struct com_s for sio). # $handler is now intr_handler[intr]. # intrcnt_actv[id_num] is now *intr_countp[intr]. The indirection is required to get a contiguous range of counters for vmstat and so that the drivers depend more in the driver than on the interrupt number (drivers could take turns using an interrupt and the counts would remain correct). There is a separate counter for each device and for each stray interrupt. In 1.1.5, stray interrupt 7 clobbers the count for device 7 or something worse if there is no device 7 :-(. # mask is now intr_mask[intr] (was already indirect). o Entry points are now _XintrI and _XfastintrI (I = intr = 0-15), not _VdevU (U = unit). o Removed BUILD_VECTORS stuff. There's a trace of it left for the string table for vmstat but config now generates the string in one piece because nothing more is required. o Removed old handling of stray interrupts and older comments about it. Submitted by: Bruce Evans
1994-08-18 05:09:36 +00:00
*/
sprintf(buf, "isa%d", device_get_unit(dev));
for (i = resource_query_string(-1, "at", buf);
i != -1;
i = resource_query_string(i, "at", buf)) {
if (strcmp(resource_query_name(i), "atkbd") == 0)
continue; /* old GENERIC kludge */
isa_add_device(dev, resource_query_name(i),
resource_query_unit(i));
}
/*
* and isa?
*/
for (i = resource_query_string(-1, "at", "isa");
i != -1;
i = resource_query_string(i, "at", "isa")) {
if (strcmp(resource_query_name(i), "atkbd") == 0)
continue; /* old GENERIC kludge */
isa_add_device(dev, resource_query_name(i),
resource_query_unit(i));
ALL: Removed patch kit headers and rcsid strings, add $Id$. isa.c: Removed old #ifdef notyet isa_configure code, since it will never be used, and I have done 90% of what it attempted to. Add conflict checking code that searchs back through the devtab's looking for any device that has already been found that may conflict with what we are about to probe. Checks are mode for I/O address, memory address, IRQ, and DRQ. This should stop the screwing up of any device that has alread been found by other device probes. Print out messages when we are not going to probe a device due to a conflict so the user knows WHY something was not found. For example: aha0 not probed due to irq conflict with ahb0 at 11 Now print out a message when a device is not found so the user knows that it was probed for, but could not be found. For example: ed1 not found at 0x320 For devices that have I/O address < 0x100 say that they are on the motherboard, not on isa! The 0x100 magic number is per ISA spec. It may seem funny that pc0 and sc0 report as being on the motherboard, but this is due to the fact that the I/O address used is that of the keyboard controller which IS on the motherboard. We really need to split the keyboard probe from the display probe. It is completly legal to build a pc with out one or the other, or even with out both! npx.c: Return -1 from the probe routine if we are using the Emulator so that the i/o addresses are not printed, this is the same trick used for 486's. Do not print the ``Errors reported via Exception 16'', and ``Errors reported via IRQ 13'' messages any more, since these just lead to more user confusion that anything. It still prints the message ``Error reporting broken, using 387 emulator'' so that the person is aware that there mother board is ill.
1993-10-13 15:59:30 +00:00
}
1993-06-12 14:58:17 +00:00
isa_wrap_old_drivers();
return 0;
}
1993-06-12 14:58:17 +00:00
extern device_t isa_bus_device;
1993-06-12 14:58:17 +00:00
static int
isa_attach(device_t dev)
{
/*
* Arrange for bus_generic_attach(dev) to be called later.
*/
isa_bus_device = dev;
return 0;
}
static void
isa_print_child(device_t bus, device_t dev)
{
struct isa_device *id = DEVTOISA(dev);
if (id->id_port[0] > 0 || id->id_port[1] > 0
|| id->id_maddr[0] > 0 || id->id_maddr[1] > 0
|| id->id_irq[0] >= 0 || id->id_irq[1] >= 0
|| id->id_drq[0] >= 0 || id->id_drq[1] >= 0)
printf(" at");
if (id->id_port[0] > 0 && id->id_port[1] > 0) {
printf(" ports %#x", (u_int)id->id_port[0]);
if (id->id_portsize[0] > 1)
printf("-%#x", (u_int)(id->id_port[0]
+ id->id_portsize[0] - 1));
printf(" and %#x", (u_int)id->id_port[1]);
if (id->id_portsize[1] > 1)
printf("-%#x", (u_int)(id->id_port[1]
+ id->id_portsize[1] - 1));
} else if (id->id_port[0] > 0) {
printf(" port %#x", (u_int)id->id_port[0]);
if (id->id_portsize[0] > 1)
printf("-%#x", (u_int)(id->id_port[0]
+ id->id_portsize[0] - 1));
} else if (id->id_port[1] > 0) {
printf(" port %#x", (u_int)id->id_port[1]);
if (id->id_portsize[1] > 1)
printf("-%#x", (u_int)(id->id_port[1]
+ id->id_portsize[1] - 1));
}
if (id->id_maddr[0] && id->id_maddr[1]) {
printf(" iomem %#x", (u_int)id->id_maddr[0]);
if (id->id_msize[0])
printf("-%#x", (u_int)(id->id_maddr[0]
+ id->id_msize[0] - 1));
printf(" and %#x", (u_int)id->id_maddr[1]);
if (id->id_msize[1])
printf("-%#x", (u_int)(id->id_maddr[1]
+ id->id_msize[1] - 1));
} else if (id->id_maddr[0]) {
printf(" iomem %#x", (u_int)id->id_maddr[0]);
if (id->id_msize[0])
printf("-%#x", (u_int)(id->id_maddr[0]
+ id->id_msize[0] - 1));
} else if (id->id_maddr[1]) {
printf(" iomem %#x", (u_int)id->id_maddr[1]);
if (id->id_msize[1])
printf("-%#x", (u_int)(id->id_maddr[1]
+ id->id_msize[1] - 1));
}
if (id->id_irq[0] >= 0 && id->id_irq[1] >= 0)
printf(" irqs %d and %d", id->id_irq[0], id->id_irq[1]);
else if (id->id_irq[0] >= 0)
printf(" irq %d", id->id_irq[0]);
else if (id->id_irq[1] >= 0)
printf(" irq %d", id->id_irq[1]);
if (id->id_drq[0] >= 0 && id->id_drq[1] >= 0)
printf(" drqs %d and %d", id->id_drq[0], id->id_drq[1]);
else if (id->id_drq[0] >= 0)
printf(" drq %d", id->id_drq[0]);
else if (id->id_drq[1] >= 0)
printf(" drq %d", id->id_drq[1]);
if (id->id_flags)
printf(" flags %#x", id->id_flags);
printf(" on %s%d",
device_get_name(bus), device_get_unit(bus));
}
static int
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
{
struct isa_device* idev = DEVTOISA(dev);
switch (index) {
case ISA_IVAR_PORT_0:
*result = idev->id_port[0];
break;
case ISA_IVAR_PORT_1:
*result = idev->id_port[1];
break;
case ISA_IVAR_PORTSIZE_0:
*result = idev->id_portsize[0];
break;
case ISA_IVAR_PORTSIZE_1:
*result = idev->id_portsize[1];
break;
case ISA_IVAR_MADDR_0:
*result = idev->id_maddr[0];
break;
case ISA_IVAR_MADDR_1:
*result = idev->id_maddr[1];
break;
case ISA_IVAR_MSIZE_0:
*result = idev->id_msize[0];
break;
case ISA_IVAR_MSIZE_1:
*result = idev->id_msize[1];
break;
case ISA_IVAR_IRQ_0:
*result = idev->id_irq[0];
break;
case ISA_IVAR_IRQ_1:
*result = idev->id_irq[1];
break;
case ISA_IVAR_DRQ_0:
*result = idev->id_drq[0];
break;
case ISA_IVAR_DRQ_1:
*result = idev->id_drq[1];
break;
case ISA_IVAR_FLAGS:
*result = idev->id_flags;
break;
}
return ENOENT;
}
1993-06-12 14:58:17 +00:00
/*
* XXX -- this interface is pretty much irrelevant in the presence of
* BUS_ALLOC_RESOURCE / BUS_RELEASE_RESOURCE (at least for the ivars which
* are defined at this point).
1993-06-12 14:58:17 +00:00
*/
static int
isa_write_ivar(device_t bus, device_t dev,
int index, uintptr_t value)
1993-06-12 14:58:17 +00:00
{
struct isa_device* idev = DEVTOISA(dev);
switch (index) {
case ISA_IVAR_PORT_0:
idev->id_port[0] = value;
break;
case ISA_IVAR_PORT_1:
idev->id_port[1] = value;
break;
case ISA_IVAR_PORTSIZE_0:
idev->id_portsize[0] = value;
break;
case ISA_IVAR_PORTSIZE_1:
idev->id_portsize[1] = value;
break;
case ISA_IVAR_MADDR_0:
idev->id_maddr[0] = value;
break;
case ISA_IVAR_MADDR_1:
idev->id_maddr[1] = value;
break;
case ISA_IVAR_MSIZE_0:
idev->id_msize[0] = value;
break;
case ISA_IVAR_MSIZE_1:
idev->id_msize[1] = value;
break;
case ISA_IVAR_IRQ_0:
idev->id_irq[0] = value;
break;
case ISA_IVAR_IRQ_1:
idev->id_irq[1] = value;
break;
case ISA_IVAR_DRQ_0:
idev->id_drq[0] = value;
break;
case ISA_IVAR_DRQ_1:
idev->id_drq[1] = value;
break;
case ISA_IVAR_FLAGS:
idev->id_flags = value;
break;
default:
return (ENOENT);
1993-06-12 14:58:17 +00:00
}
return (0);
1993-06-12 14:58:17 +00:00
}
/*
* This implementation simply passes the request up to the parent
* bus, which in our case is the special i386 nexus, substituting any
* configured values if the caller defaulted. We can get away with
* this because there is no special mapping for ISA resources on an Intel
* platform. When porting this code to another architecture, it may be
* necessary to interpose a mapping layer here.
1993-06-12 14:58:17 +00:00
*/
static struct resource *
isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
int isdefault;
struct resource *rv, **rvp = 0;
struct isa_device *id = DEVTOISA(child);
1993-06-12 14:58:17 +00:00
if (child) {
1993-06-12 14:58:17 +00:00
/*
* If this is our child, then use the isa_device to find
* defaults and to record results.
1993-06-12 14:58:17 +00:00
*/
if (device_get_devclass(device_get_parent(child)) == isa_devclass)
id = DEVTOISA(child);
1993-06-12 14:58:17 +00:00
else
id = NULL;
} else
id = NULL;
isdefault = (id != NULL && start == 0UL && end == ~0UL && *rid == 0);
if (*rid > 1)
return 0;
switch (type) {
case SYS_RES_IRQ:
if (isdefault && id->id_irq[0] >= 0) {
start = id->id_irq[0];
end = id->id_irq[0];
count = 1;
}
if (id)
rvp = &id->id_irqres[*rid];
break;
case SYS_RES_DRQ:
if (isdefault && id->id_drq[0] >= 0) {
start = id->id_drq[0];
end = id->id_drq[0];
count = 1;
}
if (id)
rvp = &id->id_drqres[*rid];
break;
case SYS_RES_MEMORY:
if (isdefault && id->id_maddr[0]) {
start = id->id_maddr[0];
count = max(count, (u_long)id->id_msize[0]);
end = id->id_maddr[0] + count;
}
if (id)
rvp = &id->id_memres[*rid];
break;
case SYS_RES_IOPORT:
if (isdefault && id->id_port[0]) {
start = id->id_port[0];
count = max(count, (u_long)id->id_portsize[0]);
end = id->id_port[0] + count;
}
if (id)
rvp = &id->id_portres[*rid];
break;
1993-06-12 14:58:17 +00:00
default:
return 0;
1993-06-12 14:58:17 +00:00
}
/*
* If the client attempts to reallocate a resource without
* releasing what was there previously, die horribly so that
* he knows how he !@#$ed up.
*/
if (rvp && *rvp != 0)
panic("%s%d: (%d, %d) not free for %s%d\n",
device_get_name(bus), device_get_unit(bus),
type, *rid,
device_get_name(child), device_get_unit(child));
/*
* nexus_alloc_resource had better not change *rid...
*/
rv = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
start, end, count, flags);
if (rvp && (*rvp = rv) != 0) {
switch (type) {
case SYS_RES_MEMORY:
id->id_maddr[*rid] = rv->r_start;
id->id_msize[*rid] = count;
break;
case SYS_RES_IOPORT:
id->id_port[*rid] = rv->r_start;
id->id_portsize[*rid] = count;
break;
case SYS_RES_IRQ:
id->id_irq[*rid] = rv->r_start;
break;
case SYS_RES_DRQ:
id->id_drq[*rid] = rv->r_start;
break;
}
1993-06-12 14:58:17 +00:00
}
return rv;
1993-06-12 14:58:17 +00:00
}
Bruce Evans' dynamic interrupt support. /usr/src/sys/i386/isa/clock.c: o Garrett's statclock changes. o Wire xxxintr, not Vclk. o Wire using register_intr(), not setidt(). /usr/src/sys/i386/isa/icu.s: o Garrett's statclock changes. o Removed unused variable high_imask. o Fake int 8 for rtc as well as int 0 for clk. Required for kernel profiling with statclock, harmless otherwise. /usr/src/sys/i386/isa/isa.c: o Allow isdp->id_irq and other things in *isdp to be changed by probes. Changing interrupts later requires direct calls to register_intr() and unregister_intr() and more care. ALLOW_CONFLICT_* is brought over from 1.1.5, except ALLOW_CONFLICT_IRQ is not supported. IRQ conflict checking is delayed until after probing so that drivers can change the IRQ to a free one; real conflicts require more cooperation between drivers to handle. o Too many details to list. o This file requires splitting and a lot more work. /usr/src/sys/i386/isa/isa_device.h: o Declare more things more completely. /usr/src/sys/i386/isa/sio.c: o Prepare to register interrupt handlers as fast. /usr/src/sys/i386/isa/vector.s: o Generate entry code for 16 fast interrupt handlers and 16 normal interrupt handlers. Changed some constants to variables: # $unit is now intr_unit[intr]. Type is int. Someday it should be a cookie suitable for the handler (e.g., a struct com_s for sio). # $handler is now intr_handler[intr]. # intrcnt_actv[id_num] is now *intr_countp[intr]. The indirection is required to get a contiguous range of counters for vmstat and so that the drivers depend more in the driver than on the interrupt number (drivers could take turns using an interrupt and the counts would remain correct). There is a separate counter for each device and for each stray interrupt. In 1.1.5, stray interrupt 7 clobbers the count for device 7 or something worse if there is no device 7 :-(. # mask is now intr_mask[intr] (was already indirect). o Entry points are now _XintrI and _XfastintrI (I = intr = 0-15), not _VdevU (U = unit). o Removed BUILD_VECTORS stuff. There's a trace of it left for the string table for vmstat but config now generates the string in one piece because nothing more is required. o Removed old handling of stray interrupts and older comments about it. Submitted by: Bruce Evans
1994-08-18 05:09:36 +00:00
static int
isa_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
int rv;
struct isa_device *id = DEVTOISA(child);
1993-06-12 14:58:17 +00:00
if (rid > 1)
return EINVAL;
switch (type) {
case SYS_RES_IRQ:
case SYS_RES_DRQ:
case SYS_RES_IOPORT:
case SYS_RES_MEMORY:
break;
default:
return (ENOENT);
}
rv = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
if (rv == 0) {
switch (type) {
case SYS_RES_IRQ:
id->id_irqres[rid] = 0;
break;
case SYS_RES_DRQ:
id->id_drqres[rid] = 0;
break;
case SYS_RES_MEMORY:
id->id_memres[rid] = 0;
break;
case SYS_RES_IOPORT:
id->id_portres[rid] = 0;
break;
default:
return ENOENT;
}
}
return rv;
}
/*
* We can't use the bus_generic_* versions of these methods because those
* methods always pass the bus param as the requesting device, and we need
* to pass the child (the i386 nexus knows about this and is prepared to
* deal).
*/
static int
isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
void (*ihand)(void *), void *arg, void **cookiep)
{
return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
ihand, arg, cookiep));
}
static int
isa_teardown_intr(device_t bus, device_t child, struct resource *r,
void *cookie)
Make pcvt and syscons live in the same kernel. If both are enabled, then the first one in the config has priority. They can be switched using userconfig(). i386/i386/conf.c: Initialize the shared syscons/pcvt cdevsw entry to `nx'. Add cdevsw registration functions. Use devsw functions of the correct type if they exist. i386/i386/cons.c: Add renamed syscons entry points to constab. i386/i386/cons.h: Declare the renamed syscons entry points. i386/i386/machdep.c: Repeat console initialization after userconfig() in case the current console has become wrong. This depends on cn functions not wiring down anything important. sys/conf.h: Declare new functions. i386/isa/isa.[ch]: Add a function to decide which display driver has priority. Should be done better. i386/isa/syscons.c: Rename pccn* -> sccn*. Initialize CRTC start address in case the previous driver has moved it. i386/isa/syscons.c, i386/isa/pcvt/* Initialize the bogusly shared variable Crtat dynamically in case the stored value was changed by the previous driver. Initialize cdevsw table from a template. Don't grab the console if another display driver has priority. i386/isa/syscons.h, i386/isa/pcvt/pcvt_hdr.h: Don't externally declare now-static cdevsw functions. i386/isa/pcvt/pcvt_hdr.h: Set the sensitive hardware flag so that pcvt doesn't always have lower priority than syscons. This also fixes the "stupid" detection of the display after filling the display with text. i386/isa/pcvt/pcvt_out.c: Don't be confused the off-screen cursor offset 0xffff set by syscons. kern/subr_xxx.c: Add enough nxio/nodev/null devsw functions of the correct type for syscons and pcvt.
1995-09-10 21:36:12 +00:00
{
return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
Make pcvt and syscons live in the same kernel. If both are enabled, then the first one in the config has priority. They can be switched using userconfig(). i386/i386/conf.c: Initialize the shared syscons/pcvt cdevsw entry to `nx'. Add cdevsw registration functions. Use devsw functions of the correct type if they exist. i386/i386/cons.c: Add renamed syscons entry points to constab. i386/i386/cons.h: Declare the renamed syscons entry points. i386/i386/machdep.c: Repeat console initialization after userconfig() in case the current console has become wrong. This depends on cn functions not wiring down anything important. sys/conf.h: Declare new functions. i386/isa/isa.[ch]: Add a function to decide which display driver has priority. Should be done better. i386/isa/syscons.c: Rename pccn* -> sccn*. Initialize CRTC start address in case the previous driver has moved it. i386/isa/syscons.c, i386/isa/pcvt/* Initialize the bogusly shared variable Crtat dynamically in case the stored value was changed by the previous driver. Initialize cdevsw table from a template. Don't grab the console if another display driver has priority. i386/isa/syscons.h, i386/isa/pcvt/pcvt_hdr.h: Don't externally declare now-static cdevsw functions. i386/isa/pcvt/pcvt_hdr.h: Set the sensitive hardware flag so that pcvt doesn't always have lower priority than syscons. This also fixes the "stupid" detection of the display after filling the display with text. i386/isa/pcvt/pcvt_out.c: Don't be confused the off-screen cursor offset 0xffff set by syscons. kern/subr_xxx.c: Add enough nxio/nodev/null devsw functions of the correct type for syscons and pcvt.
1995-09-10 21:36:12 +00:00
}
static device_method_t isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, isa_probe),
DEVMETHOD(device_attach, isa_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, isa_print_child),
DEVMETHOD(bus_read_ivar, isa_read_ivar),
DEVMETHOD(bus_write_ivar, isa_write_ivar),
DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
DEVMETHOD(bus_release_resource, isa_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, isa_setup_intr),
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
{ 0, 0 }
};
static driver_t isa_driver = {
"isa",
isa_methods,
1, /* no softc */
};
1993-06-12 14:58:17 +00:00
/*
* ISA can be attached to a PCI-ISA bridge or directly to the nexus.
1993-06-12 14:58:17 +00:00
*/
DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);