2004-06-10 21:56:52 +00:00
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/*-
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* Copyright (c) 2004 Marius Strobl, Joerg Wunsch
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*
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* derived from sys/i386/isa/pcf.c which is:
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*
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* Copyright (c) 1998 Nicolas Souchu, Marc Bouget
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Device specific driver for the EBus i2c devices found on some sun4u
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* systems. On systems not having a boot-bus controller the i2c devices
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* are PCF8584.
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*
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* Known onboard slave devices on the primary bus are:
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*
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* AXe:
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* 0x40 PCF8574 I/O fan status (CPU fans 1+2)
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* 0x9e PCF8591 A/D temperature (CPU + hotspot)
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*
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* AXmp:
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* 0x70 PCF8574 I/O fan status (fans 1-4)
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* 0x78 PCF8574 I/O fan fail interrupt
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* 0x9a PCF8591 A/D voltage (CPU core)
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* 0x9c PCF8591 A/D temperature (hotspots 1+2, aux. analog 1+2)
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* 0x9e PCF8591 A/D temperature (CPUs 1-4)
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*
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* CP1400:
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* 0x70 PCF8574 I/O reserved for factory use
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* 0x9e PCF8591 A/D temperature (CPU)
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*
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* CP1500:
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* 0x70 PCF8574 I/O reserved for factory use
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* 0x72 PCF8574 I/O geographic address + power supply status lines
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* 0x9e PCF8591 A/D temperature (CPU)
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* 0xa0 AT24C01A hostid
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*
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* For AXmp, CP1400 and CP1500 these are described in more detail in:
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* http://www.sun.com/oem/products/manuals/805-7581-04.pdf
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/resource.h>
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- Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
properties in drivers for devices on Open Firmware supported busses. The
standard properties "reg", "interrupts" und "address" are not covered by
this interface because they are only of interest in the respective bridge
code. There's a remaining standard property "status" which is unclear how
to support properly but which also isn't used in FreeBSD at present.
This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
This in turn allows to simplify and remove code-duplication in drivers for
devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
drivers for their children to use the ofw_bus kobj-interface. The IVAR-
interfaces of the Central, EBus and FHC are entirely replaced by this. The
PCI bus driver used its own kobj-interface and now also uses the ofw_bus
one. The IVARs special to the SBus, e.g. for retrieving the burst size,
remain.
Beware: this causes an ABI-breakage for modules of drivers which used the
IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
recompiled.
The style-inconsistencies introduced in some of the bus drivers will be
fixed by tmm@ in a generic clean-up of the respective drivers later (he
requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
use the ofw_bus kobj-interface. This invloves removing the IVARs related
to the "reg" property which were unused and a leftover from the NetBSD
origini of the code. There's no ABI-breakage caused by this because none
of these driver are currently built as modules.
There are other powerpc bus drivers which can be converted to the ofw_bus
kobj-interface, e.g. the PCI bus driver, which should be done together
with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
advantage of the ofw_bus kobj-interface and simplify them a bit.
Reviewed by: grehan, tmm
Approved by: re (scottl)
Discussed with: tmm
Tested with: Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/openfirm.h>
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2004-06-10 21:56:52 +00:00
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/pcf/pcfvar.h>
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#include "iicbus_if.h"
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#define PCF_NAME "pcf"
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static int pcf_ebus_probe(device_t);
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static int pcf_ebus_attach(device_t);
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static int pcf_ebus_detach(device_t);
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static device_method_t pcf_ebus_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, pcf_ebus_probe),
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DEVMETHOD(device_attach, pcf_ebus_attach),
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DEVMETHOD(device_detach, pcf_ebus_detach),
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/* iicbus interface */
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DEVMETHOD(iicbus_callback, iicbus_null_callback),
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DEVMETHOD(iicbus_repeated_start, pcf_repeated_start),
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DEVMETHOD(iicbus_start, pcf_start),
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DEVMETHOD(iicbus_stop, pcf_stop),
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DEVMETHOD(iicbus_write, pcf_write),
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DEVMETHOD(iicbus_read, pcf_read),
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DEVMETHOD(iicbus_reset, pcf_rst_card),
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{ 0, 0 }
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};
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static devclass_t pcf_ebus_devclass;
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static driver_t pcf_ebus_driver = {
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PCF_NAME,
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pcf_ebus_methods,
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sizeof(struct pcf_softc),
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};
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static int
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pcf_ebus_probe(device_t dev)
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{
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- Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
properties in drivers for devices on Open Firmware supported busses. The
standard properties "reg", "interrupts" und "address" are not covered by
this interface because they are only of interest in the respective bridge
code. There's a remaining standard property "status" which is unclear how
to support properly but which also isn't used in FreeBSD at present.
This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
This in turn allows to simplify and remove code-duplication in drivers for
devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
drivers for their children to use the ofw_bus kobj-interface. The IVAR-
interfaces of the Central, EBus and FHC are entirely replaced by this. The
PCI bus driver used its own kobj-interface and now also uses the ofw_bus
one. The IVARs special to the SBus, e.g. for retrieving the burst size,
remain.
Beware: this causes an ABI-breakage for modules of drivers which used the
IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
recompiled.
The style-inconsistencies introduced in some of the bus drivers will be
fixed by tmm@ in a generic clean-up of the respective drivers later (he
requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
use the ofw_bus kobj-interface. This invloves removing the IVARs related
to the "reg" property which were unused and a leftover from the NetBSD
origini of the code. There's no ABI-breakage caused by this because none
of these driver are currently built as modules.
There are other powerpc bus drivers which can be converted to the ofw_bus
kobj-interface, e.g. the PCI bus driver, which should be done together
with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
advantage of the ofw_bus kobj-interface and simplify them a bit.
Reviewed by: grehan, tmm
Approved by: re (scottl)
Discussed with: tmm
Tested with: Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
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const char *compat;
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2004-06-10 21:56:52 +00:00
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/*
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* We must not attach to this i2c device if this is a system with
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* a boot-bus controller. Additionally testing the compatibility
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* property will hopefully take care of this.
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*/
|
- Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
properties in drivers for devices on Open Firmware supported busses. The
standard properties "reg", "interrupts" und "address" are not covered by
this interface because they are only of interest in the respective bridge
code. There's a remaining standard property "status" which is unclear how
to support properly but which also isn't used in FreeBSD at present.
This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
This in turn allows to simplify and remove code-duplication in drivers for
devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
drivers for their children to use the ofw_bus kobj-interface. The IVAR-
interfaces of the Central, EBus and FHC are entirely replaced by this. The
PCI bus driver used its own kobj-interface and now also uses the ofw_bus
one. The IVARs special to the SBus, e.g. for retrieving the burst size,
remain.
Beware: this causes an ABI-breakage for modules of drivers which used the
IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
recompiled.
The style-inconsistencies introduced in some of the bus drivers will be
fixed by tmm@ in a generic clean-up of the respective drivers later (he
requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
use the ofw_bus kobj-interface. This invloves removing the IVARs related
to the "reg" property which were unused and a leftover from the NetBSD
origini of the code. There's no ABI-breakage caused by this because none
of these driver are currently built as modules.
There are other powerpc bus drivers which can be converted to the ofw_bus
kobj-interface, e.g. the PCI bus driver, which should be done together
with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
advantage of the ofw_bus kobj-interface and simplify them a bit.
Reviewed by: grehan, tmm
Approved by: re (scottl)
Discussed with: tmm
Tested with: Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
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if (strcmp("i2c", ofw_bus_get_name(dev)) == 0) {
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compat = ofw_bus_get_compat(dev);
|
2004-06-10 21:56:52 +00:00
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if (compat != NULL && strcmp("i2cpcf,8584", compat) == 0) {
|
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device_set_desc(dev, "PCF8584 I2C bus controller");
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return (0);
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|
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}
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|
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}
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return (ENXIO);
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|
|
}
|
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|
|
static int
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pcf_ebus_attach(device_t dev)
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|
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{
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|
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struct pcf_softc *sc;
|
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|
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int rv = ENXIO;
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|
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phandle_t node;
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uint64_t own_addr;
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sc = DEVTOSOFTC(dev);
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bzero(sc, sizeof(struct pcf_softc));
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|
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/* get OFW node of the pcf */
|
- Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
properties in drivers for devices on Open Firmware supported busses. The
standard properties "reg", "interrupts" und "address" are not covered by
this interface because they are only of interest in the respective bridge
code. There's a remaining standard property "status" which is unclear how
to support properly but which also isn't used in FreeBSD at present.
This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
This in turn allows to simplify and remove code-duplication in drivers for
devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
drivers for their children to use the ofw_bus kobj-interface. The IVAR-
interfaces of the Central, EBus and FHC are entirely replaced by this. The
PCI bus driver used its own kobj-interface and now also uses the ofw_bus
one. The IVARs special to the SBus, e.g. for retrieving the burst size,
remain.
Beware: this causes an ABI-breakage for modules of drivers which used the
IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
recompiled.
The style-inconsistencies introduced in some of the bus drivers will be
fixed by tmm@ in a generic clean-up of the respective drivers later (he
requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
use the ofw_bus kobj-interface. This invloves removing the IVARs related
to the "reg" property which were unused and a leftover from the NetBSD
origini of the code. There's no ABI-breakage caused by this because none
of these driver are currently built as modules.
There are other powerpc bus drivers which can be converted to the ofw_bus
kobj-interface, e.g. the PCI bus driver, which should be done together
with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
advantage of the ofw_bus kobj-interface and simplify them a bit.
Reviewed by: grehan, tmm
Approved by: re (scottl)
Discussed with: tmm
Tested with: Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
|
|
|
if ((node = ofw_bus_get_node(dev)) <= 0) {
|
2004-06-10 21:56:52 +00:00
|
|
|
device_printf(dev, "cannot get OFW node\n");
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
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|
|
/* IO port is mandatory */
|
|
|
|
sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
|
|
|
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&sc->rid_ioport, RF_ACTIVE);
|
|
|
|
if (sc->res_ioport == 0) {
|
|
|
|
device_printf(dev, "cannot reserve I/O port range\n");
|
|
|
|
goto error;
|
|
|
|
}
|
2004-08-11 21:19:31 +00:00
|
|
|
sc->bt_ioport = rman_get_bustag(sc->res_ioport);
|
|
|
|
sc->bh_ioport = rman_get_bushandle(sc->res_ioport);
|
2004-06-10 21:56:52 +00:00
|
|
|
|
|
|
|
sc->pcf_flags = device_get_flags(dev);
|
|
|
|
|
|
|
|
/*
|
|
|
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* XXX use poll-mode property?
|
|
|
|
*/
|
|
|
|
if (!(sc->pcf_flags & IIC_POLLED)) {
|
|
|
|
sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
|
|
|
|
&sc->rid_irq, RF_ACTIVE);
|
|
|
|
if (sc->res_irq == 0) {
|
|
|
|
device_printf(dev, "can't reserve irq, polled mode.\n");
|
|
|
|
sc->pcf_flags |= IIC_POLLED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX on AXmp there's probably a second IRQ which is the fan fail
|
|
|
|
* interrupt genererated by the PCF8574 at 0x78.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* get address of the pcf */
|
|
|
|
if (OF_getprop(node, "own-address", &own_addr, sizeof(own_addr)) ==
|
|
|
|
-1) {
|
|
|
|
device_printf(dev, "cannot get own address\n");
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
if (bootverbose)
|
|
|
|
device_printf(dev, "PCF8584 address: 0x%08llx\n", (unsigned
|
|
|
|
long long)own_addr);
|
|
|
|
|
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|
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/* reset the chip */
|
|
|
|
pcf_rst_card(dev, IIC_FASTEST, own_addr, NULL);
|
|
|
|
|
|
|
|
if (sc->res_irq) {
|
|
|
|
rv = BUS_SETUP_INTR(device_get_parent(dev), dev, sc->res_irq,
|
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|
|
INTR_TYPE_NET /* | INTR_ENTROPY */, pcf_intr, sc,
|
|
|
|
&sc->intr_cookie);
|
|
|
|
if (rv) {
|
|
|
|
device_printf(dev, "could not setup IRQ\n");
|
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|
|
goto error;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
|
|
|
|
device_printf(dev, "could not allocate iicbus instance\n");
|
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|
|
|
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|
|
/* probe and attach the iicbus */
|
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|
|
bus_generic_attach(dev);
|
|
|
|
|
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|
|
return (0);
|
|
|
|
|
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|
|
error:
|
|
|
|
if (sc->res_irq != 0) {
|
|
|
|
bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq,
|
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|
|
sc->res_irq);
|
|
|
|
bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
|
|
|
|
sc->res_irq);
|
|
|
|
}
|
|
|
|
if (sc->res_ioport != 0) {
|
|
|
|
bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
|
|
|
|
sc->res_ioport);
|
|
|
|
bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
|
|
|
|
sc->res_ioport);
|
|
|
|
}
|
|
|
|
return (rv);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
pcf_ebus_detach(device_t dev)
|
|
|
|
{
|
|
|
|
struct pcf_softc *sc;
|
|
|
|
int rv;
|
|
|
|
|
|
|
|
sc = DEVTOSOFTC(dev);
|
|
|
|
|
|
|
|
if ((rv = bus_generic_detach(dev)) != 0)
|
|
|
|
return (rv);
|
|
|
|
|
|
|
|
if ((rv = device_delete_child(dev, sc->iicbus)) != 0)
|
|
|
|
return (rv);
|
|
|
|
|
|
|
|
if (sc->res_irq != 0) {
|
|
|
|
BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->res_irq,
|
|
|
|
sc->intr_cookie);
|
|
|
|
bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq,
|
|
|
|
sc->res_irq);
|
|
|
|
bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
|
|
|
|
sc->res_irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
|
|
|
|
sc->res_ioport);
|
|
|
|
bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
|
|
|
|
sc->res_ioport);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
DRIVER_MODULE(pcf_ebus, ebus, pcf_ebus_driver, pcf_ebus_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(pcf_ebus, iicbus, PCF_MINVER, PCF_PREFVER, PCF_MAXVER);
|
|
|
|
MODULE_VERSION(pcf_ebus, PCF_MODVER);
|