480 lines
14 KiB
C
480 lines
14 KiB
C
/*-
|
|
* Copyright (c) 2000 Michael Smith
|
|
* Copyright (c) 2000 BSDi
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* ISA bus enumerator using PnP HIDs from ACPI space.
|
|
*/
|
|
|
|
#include "opt_acpi.h"
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <isa/isavar.h>
|
|
|
|
#include "acpi.h"
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
|
|
/*
|
|
* Hooks for the ACPI CA debugging infrastructure
|
|
*/
|
|
#define _COMPONENT ACPI_BUS
|
|
MODULE_NAME("ISA")
|
|
|
|
#define PNP_HEXTONUM(c) ((c) >= 'a' \
|
|
? (c) - 'a' + 10 \
|
|
: ((c) >= 'A' \
|
|
? (c) - 'A' + 10 \
|
|
: (c) - '0'))
|
|
#define PNP_EISAID(s) \
|
|
((((s[0] - '@') & 0x1f) << 2) \
|
|
| (((s[1] - '@') & 0x18) >> 3) \
|
|
| (((s[1] - '@') & 0x07) << 13) \
|
|
| (((s[2] - '@') & 0x1f) << 8) \
|
|
| (PNP_HEXTONUM(s[4]) << 16) \
|
|
| (PNP_HEXTONUM(s[3]) << 20) \
|
|
| (PNP_HEXTONUM(s[6]) << 24) \
|
|
| (PNP_HEXTONUM(s[5]) << 28))
|
|
|
|
static void acpi_isa_set_init(device_t dev, void **context);
|
|
static void acpi_isa_set_done(device_t dev, void *context);
|
|
static void acpi_isa_set_ioport(device_t dev, void *context, u_int32_t base, u_int32_t length);
|
|
static void acpi_isa_set_iorange(device_t dev, void *context, u_int32_t low, u_int32_t high,
|
|
u_int32_t length, u_int32_t align);
|
|
static void acpi_isa_set_memory(device_t dev, void *context, u_int32_t base, u_int32_t length);
|
|
static void acpi_isa_set_memoryrange(device_t dev, void *context, u_int32_t low, u_int32_t high,
|
|
u_int32_t length, u_int32_t align);
|
|
static void acpi_isa_set_irq(device_t dev, void *context, u_int32_t irq);
|
|
static void acpi_isa_set_drq(device_t dev, void *context, u_int32_t drq);
|
|
static void acpi_isa_set_start_dependant(device_t dev, void *context, int preference);
|
|
static void acpi_isa_set_end_dependant(device_t dev, void *context);
|
|
|
|
static struct acpi_parse_resource_set acpi_isa_parse_set = {
|
|
acpi_isa_set_init,
|
|
acpi_isa_set_done,
|
|
acpi_isa_set_ioport,
|
|
acpi_isa_set_iorange,
|
|
acpi_isa_set_memory,
|
|
acpi_isa_set_memoryrange,
|
|
acpi_isa_set_irq,
|
|
acpi_isa_set_drq,
|
|
acpi_isa_set_start_dependant,
|
|
acpi_isa_set_end_dependant
|
|
};
|
|
|
|
#define MAXDEP 8
|
|
|
|
struct acpi_isa_context {
|
|
int ai_config;
|
|
int ai_nconfigs;
|
|
struct isa_config ai_configs[MAXDEP + 1];
|
|
int ai_priorities[MAXDEP + 1];
|
|
};
|
|
|
|
static void acpi_isa_set_config(void *arg, struct isa_config *config, int enable);
|
|
static void acpi_isa_identify(driver_t *driver, device_t bus);
|
|
static ACPI_STATUS acpi_isa_identify_child(ACPI_HANDLE handle, UINT32 level,
|
|
void *context, void **status);
|
|
|
|
static device_method_t acpi_isa_methods[] = {
|
|
DEVMETHOD(device_identify, acpi_isa_identify),
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t acpi_isa_driver = {
|
|
"acpi_isa",
|
|
acpi_isa_methods,
|
|
1,
|
|
};
|
|
|
|
static devclass_t acpi_isa_devclass;
|
|
DRIVER_MODULE(acpi_isa, isa, acpi_isa_driver, acpi_isa_devclass, 0, 0);
|
|
|
|
/*
|
|
* This function is called to make the selected configuration
|
|
* active.
|
|
*/
|
|
static void
|
|
acpi_isa_set_config(void *arg, struct isa_config *config, int enable)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Interrogate ACPI for devices which might be attatched to an ISA
|
|
* bus.
|
|
*
|
|
* Note that it is difficult to determine whether a device in the ACPI
|
|
* namespace is or is not visible to the ISA bus, and thus we are a
|
|
* little too generous here and just export everything with _HID
|
|
* and _CRS.
|
|
*/
|
|
static void
|
|
acpi_isa_identify(driver_t *driver, device_t bus)
|
|
{
|
|
ACPI_HANDLE parent;
|
|
ACPI_STATUS status;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
if (acpi_disabled("isa"))
|
|
return_VOID;
|
|
|
|
/*
|
|
* If this driver is loaded from userland, we can assume that
|
|
* the ISA bus has already been detected, and we should not
|
|
* interfere.
|
|
*/
|
|
if (!cold)
|
|
return_VOID;
|
|
|
|
/*
|
|
* Look for the _SB_ scope, which will contain all the devices
|
|
* we are likely to support.
|
|
*/
|
|
if ((status = AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &parent)) != AE_OK) {
|
|
device_printf(bus, "no ACPI _SB_ scope - %s\n", AcpiFormatException(status));
|
|
return_VOID;
|
|
}
|
|
|
|
if ((status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, parent, 100, acpi_isa_identify_child, bus, NULL)) != AE_OK)
|
|
device_printf(bus, "AcpiWalkNamespace on _SB_ failed - %s\n", AcpiFormatException(status));
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Check a device to see whether it makes sense to try attaching it to an
|
|
* ISA bus, and if so, do so.
|
|
*
|
|
* Note that we *must* always return AE_OK, or the namespace walk will terminate.
|
|
*
|
|
* XXX Note also that this is picking up a *lot* of things that are not ISA devices.
|
|
* Should we consider lazy-binding this so that only the ID is saved and resources
|
|
* are not parsed until the device is claimed by a driver?
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_isa_identify_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
|
|
{
|
|
ACPI_DEVICE_INFO devinfo;
|
|
ACPI_BUFFER buf;
|
|
device_t child, bus = (device_t)context;
|
|
u_int32_t devid;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
/*
|
|
* Skip this node if it's on the 'avoid' list.
|
|
*/
|
|
if (acpi_avoid(handle))
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
/*
|
|
* Try to get information about the device.
|
|
*/
|
|
if (AcpiGetObjectInfo(handle, &devinfo) != AE_OK)
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
/*
|
|
* Reformat the _HID value into 32 bits.
|
|
*/
|
|
if (!(devinfo.Valid & ACPI_VALID_HID))
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
/*
|
|
* XXX Try to avoid passing stuff to ISA that it just isn't interested
|
|
* in. This is the *wrong* solution, and what needs to be done
|
|
* involves just sending ISA the PnP ID and a handle, and then
|
|
* lazy-parsing the resources if and only if a driver attaches.
|
|
* With the way that ISA currently works (using bus_probe_and_attach)
|
|
* this is very difficult. Maybe we need a device_configure method?
|
|
*/
|
|
if (!(strncmp(devinfo.HardwareId, "PNP0C", 5)))
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
devid = PNP_EISAID(devinfo.HardwareId);
|
|
|
|
/* XXX check _STA here? */
|
|
if (devinfo.Valid & ACPI_VALID_STA) {
|
|
}
|
|
|
|
/*
|
|
* Fetch our current settings.
|
|
*
|
|
* XXX Note that we may want to support alternate settings at some
|
|
* point as well.
|
|
*/
|
|
if (acpi_GetIntoBuffer(handle, AcpiGetCurrentResources, &buf) != AE_OK)
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
/*
|
|
* Add the device and parse our resources
|
|
*/
|
|
child = BUS_ADD_CHILD(bus, ISA_ORDER_PNP, NULL, -1);
|
|
isa_set_vendorid(child, devid);
|
|
isa_set_logicalid(child, devid);
|
|
ISA_SET_CONFIG_CALLBACK(bus, child, acpi_isa_set_config, 0);
|
|
acpi_parse_resources(child, handle, &acpi_isa_parse_set);
|
|
AcpiOsFree(buf.Pointer);
|
|
|
|
if (!device_get_desc(child))
|
|
device_set_desc_copy(child, devinfo.HardwareId);
|
|
|
|
DEBUG_PRINT(TRACE_OBJECTS, ("added ISA PnP info for %s\n", acpi_name(handle)));
|
|
|
|
/*
|
|
* XXX Parse configuration data and _CID list to find compatible IDs
|
|
*/
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_init(device_t dev, void **context)
|
|
{
|
|
struct acpi_isa_context *cp;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
cp = malloc(sizeof(*cp), M_DEVBUF, M_NOWAIT);
|
|
bzero(cp, sizeof(*cp));
|
|
cp->ai_nconfigs = 1;
|
|
*context = cp;
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_done(device_t dev, void *context)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *config, *configs;
|
|
device_t parent;
|
|
int i, j;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
if (cp == NULL)
|
|
return_VOID;
|
|
parent = device_get_parent(dev);
|
|
|
|
/* simple config without dependants */
|
|
if (cp->ai_nconfigs == 1) {
|
|
ISA_ADD_CONFIG(parent, dev, cp->ai_priorities[0], &cp->ai_configs[0]);
|
|
goto done;
|
|
}
|
|
|
|
/* Cycle through dependant configs merging primary details */
|
|
configs = &cp->ai_configs[0];
|
|
for(i = 1; i < cp->ai_nconfigs; i++) {
|
|
config = &configs[i];
|
|
for(j = 0; j < configs[0].ic_nmem; j++) {
|
|
if (config->ic_nmem == ISA_NMEM) {
|
|
device_printf(parent, "too many memory ranges\n");
|
|
free(configs, M_DEVBUF);
|
|
return_VOID;
|
|
}
|
|
config->ic_mem[config->ic_nmem] = configs[0].ic_mem[j];
|
|
config->ic_nmem++;
|
|
}
|
|
for(j = 0; j < configs[0].ic_nport; j++) {
|
|
if (config->ic_nport == ISA_NPORT) {
|
|
device_printf(parent, "too many port ranges\n");
|
|
free(configs, M_DEVBUF);
|
|
return_VOID;
|
|
}
|
|
config->ic_port[config->ic_nport] = configs[0].ic_port[j];
|
|
config->ic_nport++;
|
|
}
|
|
for(j = 0; j < configs[0].ic_nirq; j++) {
|
|
if (config->ic_nirq == ISA_NIRQ) {
|
|
device_printf(parent, "too many irq ranges\n");
|
|
free(configs, M_DEVBUF);
|
|
return_VOID;
|
|
}
|
|
config->ic_irqmask[config->ic_nirq] = configs[0].ic_irqmask[j];
|
|
config->ic_nirq++;
|
|
}
|
|
for(j = 0; j < configs[0].ic_ndrq; j++) {
|
|
if (config->ic_ndrq == ISA_NDRQ) {
|
|
device_printf(parent, "too many drq ranges\n");
|
|
free(configs, M_DEVBUF);
|
|
return_VOID;
|
|
}
|
|
config->ic_drqmask[config->ic_ndrq] = configs[0].ic_drqmask[j];
|
|
config->ic_ndrq++;
|
|
}
|
|
(void)ISA_ADD_CONFIG(parent, dev, cp->ai_priorities[i], &configs[i]);
|
|
}
|
|
|
|
done:
|
|
free(cp, M_DEVBUF);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_ioport(device_t dev, void *context, u_int32_t base, u_int32_t length)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nport == ISA_NPORT) {
|
|
printf("too many ports\n");
|
|
return;
|
|
}
|
|
ic->ic_port[ic->ic_nport].ir_start = base;
|
|
ic->ic_port[ic->ic_nport].ir_end = base + length - 1;
|
|
ic->ic_port[ic->ic_nport].ir_size = length;
|
|
ic->ic_port[ic->ic_nport].ir_align = 1;
|
|
ic->ic_nport++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_iorange(device_t dev, void *context, u_int32_t low, u_int32_t high, u_int32_t length, u_int32_t align)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nport == ISA_NPORT) {
|
|
printf("too many ports\n");
|
|
return;
|
|
}
|
|
ic->ic_port[ic->ic_nport].ir_start = low;
|
|
ic->ic_port[ic->ic_nport].ir_end = high + length - 1;
|
|
ic->ic_port[ic->ic_nport].ir_size = length;
|
|
ic->ic_port[ic->ic_nport].ir_align = imin(1, align);
|
|
ic->ic_nport++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_memory(device_t dev, void *context, u_int32_t base, u_int32_t length)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nmem == ISA_NMEM) {
|
|
printf("too many memory ranges\n");
|
|
return;
|
|
}
|
|
ic->ic_mem[ic->ic_nmem].ir_start = base;
|
|
ic->ic_mem[ic->ic_nmem].ir_end = base + length - 1;
|
|
ic->ic_mem[ic->ic_nmem].ir_size = length;
|
|
ic->ic_mem[ic->ic_nmem].ir_align = 1;
|
|
ic->ic_nmem++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_memoryrange(device_t dev, void *context, u_int32_t low, u_int32_t high, u_int32_t length, u_int32_t align)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nmem == ISA_NMEM) {
|
|
printf("too many memory ranges\n");
|
|
return;
|
|
}
|
|
ic->ic_mem[ic->ic_nmem].ir_start = low;
|
|
ic->ic_mem[ic->ic_nmem].ir_end = high + length - 1;
|
|
ic->ic_mem[ic->ic_nmem].ir_size = length;
|
|
ic->ic_mem[ic->ic_nmem].ir_align = imin(1, align);
|
|
ic->ic_nmem++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_irq(device_t dev, void *context, u_int32_t irq)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nirq == ISA_NIRQ) {
|
|
printf("too many IRQs\n");
|
|
return;
|
|
}
|
|
ic->ic_irqmask[ic->ic_nirq] = 1 << irq;
|
|
ic->ic_nirq++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_drq(device_t dev, void *context, u_int32_t drq)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
struct isa_config *ic = &cp->ai_configs[cp->ai_config];
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
if (ic->ic_nirq == ISA_NDRQ) {
|
|
printf("too many DRQs\n");
|
|
return;
|
|
}
|
|
ic->ic_drqmask[ic->ic_ndrq] = drq;
|
|
ic->ic_ndrq++;
|
|
}
|
|
|
|
/*
|
|
* XXX the "too many dependant configs" logic here is wrong, and
|
|
* will spam the last dependant config.
|
|
*/
|
|
static void
|
|
acpi_isa_set_start_dependant(device_t dev, void *context, int preference)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
|
|
if (cp->ai_nconfigs > MAXDEP) {
|
|
printf("too many dependant configs\n");
|
|
return;
|
|
}
|
|
cp->ai_config = cp->ai_nconfigs;
|
|
cp->ai_priorities[cp->ai_config] = preference;
|
|
cp->ai_nconfigs++;
|
|
}
|
|
|
|
static void
|
|
acpi_isa_set_end_dependant(device_t dev, void *context)
|
|
{
|
|
struct acpi_isa_context *cp = (struct acpi_isa_context *)context;
|
|
|
|
if (cp == NULL)
|
|
return;
|
|
cp->ai_config = 0;
|
|
}
|