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freebsd-skq/sys/dev/acpica/acpi_pcib_pci.c

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Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
/*-
* 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.
*/
Use __FBSDID(). Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
#include <sys/malloc.h>
Add missing <sys/module.h> includes
2004-05-30 20:08:47 +00:00
#include <sys/module.h>
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
Canonize the include of acpi.h.
2005-09-11 18:39:03 +00:00
#include <contrib/dev/acpica/acpi.h>
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
#include <dev/acpica/acpivar.h>
#include <dev/acpica/acpi_pcibvar.h>
#include <machine/pci_cfgreg.h>
Prefer new location of pci include files (which have only been in the tree for two or more years now), except in a few places where there's code to be compatible with older versions of FreeBSD.
2003-08-22 06:06:16 +00:00
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcib_private.h>
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
#include "pcib_if.h"
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
/* Hooks for the ACPI CA debugging infrastructure. */
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
#define _COMPONENT ACPI_BUS
ACPI_MODULE_NAME("PCI_PCI")
struct acpi_pcib_softc {
struct pcib_softc ap_pcibsc;
ACPI_HANDLE ap_handle;
ACPI_BUFFER ap_prt; /* interrupt routing table */
};
Remove trailing whitespace.
2004-12-27 05:36:47 +00:00
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
struct acpi_pcib_lookup_info {
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
UINT32 address;
ACPI_HANDLE handle;
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
};
Remove trailing whitespace.
2004-12-27 05:36:47 +00:00
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
static int acpi_pcib_pci_probe(device_t bus);
static int acpi_pcib_pci_attach(device_t bus);
Add code for ACPI PCI link object manipulation. This allocate the best IRQ to boot-disable devices (have IRQ 0). Allocated IRQ will be used for PCI interrupt routing when ACPI is enabled. Note that verbose messaging enabled for the time being so that people can easily notice the strange behavior if it happened.
2002-10-05 02:01:05 +00:00
static int acpi_pcib_pci_resume(device_t bus);
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
static int acpi_pcib_read_ivar(device_t dev, device_t child,
int which, uintptr_t *result);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
static int acpi_pcib_pci_route_interrupt(device_t pcib,
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
device_t dev, int pin);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
static device_method_t acpi_pcib_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, acpi_pcib_pci_probe),
DEVMETHOD(device_attach, acpi_pcib_pci_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
Add code for ACPI PCI link object manipulation. This allocate the best IRQ to boot-disable devices (have IRQ 0). Allocated IRQ will be used for PCI interrupt routing when ACPI is enabled. Note that verbose messaging enabled for the time being so that people can easily notice the strange behavior if it happened.
2002-10-05 02:01:05 +00:00
DEVMETHOD(device_resume, acpi_pcib_pci_resume),
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
DEVMETHOD(bus_write_ivar, pcib_write_ivar),
DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, pcib_maxslots),
DEVMETHOD(pcib_read_config, pcib_read_config),
DEVMETHOD(pcib_write_config, pcib_write_config),
DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt),
First cut at MI support for PCI Message Signalled Interrupts (MSI): - Add 3 new functions to the pci_if interface along with suitable wrappers to provide the device driver visible API: - pci_alloc_msi(dev, int *count) backed by PCI_ALLOC_MSI(). '*count' here is an in and out parameter. The driver stores the desired number of messages in '*count' before calling the function. On success, '*count' holds the number of messages allocated to the device. Also on success, the driver can access the messages as SYS_RES_IRQ resources starting at rid 1. Note that the legacy INTx interrupt resource will not be available when using MSI. Note that this function will allocate either MSI or MSI-X messages depending on the devices capabilities and the 'hw.pci.enable_msix' and 'hw.pci.enable_msi' tunables. Also note that the driver should activate the memory resource that holds the MSI-X table and pending bit array (PBA) before calling this function if the device supports MSI-X. - pci_release_msi(dev) backed by PCI_RELEASE_MSI(). This function releases the messages allocated for this device. All of the SYS_RES_IRQ resources need to be released for this function to succeed. - pci_msi_count(dev) backed by PCI_MSI_COUNT(). This function returns the maximum number of MSI or MSI-X messages supported by this device. MSI-X is preferred if present, but this function will honor the 'hw.pci.enable_msix' and 'hw.pci.enable_msi' tunables. This function should return the largest value that pci_alloc_msi() can return (assuming the MD code is able to allocate sufficient backing resources for all of the messages). - Add default implementations for these 3 methods to the pci_driver generic PCI bus driver. (The various other PCI bus drivers such as for ACPI and OFW will inherit these default implementations.) This default implementation depends on 4 new pcib_if methods that bubble up through the PCI bridges to the MD code to allocate IRQ values and perform any needed MD setup code needed: - PCIB_ALLOC_MSI() attempts to allocate a group of MSI messages. - PCIB_RELEASE_MSI() releases a group of MSI messages. - PCIB_ALLOC_MSIX() attempts to allocate a single MSI-X message. - PCIB_RELEASE_MSIX() releases a single MSI-X message. - Add default implementations for these 4 methods that just pass the request up to the parent bus's parent bridge driver and use the default implementation in the various MI PCI bridge drivers. - Add MI functions for use by MD code when managing MSI and MSI-X interrupts: - pci_enable_msi(dev, address, data) programs the MSI capability address and data registers for a group of MSI messages - pci_enable_msix(dev, index, address, data) initializes a single MSI-X message in the MSI-X table - pci_mask_msix(dev, index) masks a single MSI-X message - pci_unmask_msix(dev, index) unmasks a single MSI-X message - pci_pending_msix(dev, index) returns true if the specified MSI-X message is currently pending - Save the MSI capability address and data registers in the pci_cfgreg block in a PCI devices ivars and restore the values when a device is resumed. Note that the MSI-X table is not currently restored during resume. - Add constants for MSI-X register offsets and fields. - Record interesting data about any MSI-X capability blocks we come across in the pci_cfgreg block in the ivars for PCI devices. Tested on: em (i386, MSI), bce (amd64/i386, MSI), mpt (amd64, MSI-X) Reviewed by: scottl, grehan, jfv MFC after: 2 months
2006-11-13 21:47:30 +00:00
DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
DEVMETHOD(pcib_release_msi, pcib_release_msi),
DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
DEVMETHOD(pcib_release_msix, pcib_release_msix),
Revamp the MSI/MSI-X code a bit to achieve two main goals: - Simplify the amount of work that has be done for each architecture by pushing more of the truly MI code down into the PCI bus driver. - Don't bind MSI-X indicies to IRQs so that we can allow a driver to map multiple MSI-X messages into a single IRQ when handling a message shortage. The changes include: - Add a new pcib_if method: PCIB_MAP_MSI() which is called by the PCI bus to calculate the address and data values for a given MSI/MSI-X IRQ. The x86 nexus drivers map this into a call to a new 'msi_map()' function in msi.c that does the mapping. - Retire the pcib_if method PCIB_REMAP_MSIX() and remove the 'index' parameter from PCIB_ALLOC_MSIX(). MD code no longer has any knowledge of the MSI-X index for a given MSI-X IRQ. - The PCI bus driver now stores more MSI-X state in a child's ivars. Specifically, it now stores an array of IRQs (called "message vectors" in the code) that have associated address and data values, and a small virtual version of the MSI-X table that specifies the message vector that a given MSI-X table entry uses. Sparse mappings are permitted in the virtual table. - The PCI bus driver now configures the MSI and MSI-X address/data registers directly via custom bus_setup_intr() and bus_teardown_intr() methods. pci_setup_intr() invokes PCIB_MAP_MSI() to determine the address and data values for a given message as needed. The MD code no longer has to call back down into the PCI bus code to set these values from the nexus' bus_setup_intr() handler. - The PCI bus code provides a callout (pci_remap_msi_irq()) that the MD code can call to force the PCI bus to re-invoke PCIB_MAP_MSI() to get new values of the address and data fields for a given IRQ. The x86 MSI code uses this when an MSI IRQ is moved to a different CPU, requiring a new value of the 'address' field. - The x86 MSI psuedo-driver loses a lot of code, and in fact the separate MSI/MSI-X pseudo-PICs are collapsed down into a single MSI PIC driver since the only remaining diff between the two is a substring in a bootverbose printf. - The PCI bus driver will now restore MSI-X state (including programming entries in the MSI-X table) on device resume. - The interface for pci_remap_msix() has changed. Instead of accepting indices for the allocated vectors, it accepts a mini-virtual table (with a new length parameter). This table is an array of u_ints, where each value specifies which allocated message vector to use for the corresponding MSI-X message. A vector of 0 forces a message to not have an associated IRQ. The device may choose to only use some of the IRQs assigned, in which case the unused IRQs must be at the "end" and will be released back to the system. This allows a driver to use the same remap table for different shortage values. For example, if a driver wants 4 messages, it can use the same remap table (which only uses the first two messages) for the cases when it only gets 2 or 3 messages and in the latter case the PCI bus will release the 3rd IRQ back to the system. MFC after: 1 month
2007-05-02 17:50:36 +00:00
DEVMETHOD(pcib_map_msi, pcib_map_msi),
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
{0, 0}
};
- Make pcib_devclass private to sys/dev/pci/pci_pci.c and change all the various pcib drivers to use their own private devclass_t variables for their modules. - Use the DEFINE_CLASS_0() macro to declare drivers for the various pcib drivers while I'm here.
2006-01-06 19:22:19 +00:00
static devclass_t pcib_devclass;
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
- Make pcib_devclass private to sys/dev/pci/pci_pci.c and change all the various pcib drivers to use their own private devclass_t variables for their modules. - Use the DEFINE_CLASS_0() macro to declare drivers for the various pcib drivers while I'm here.
2006-01-06 19:22:19 +00:00
DEFINE_CLASS_0(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
sizeof(struct acpi_pcib_softc));
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
Add MODULE_DEPEND entries so some of these drivers can eventually be loaded separately from ACPI (i.e., embedded use).
2004-04-09 18:14:32 +00:00
MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
static int
acpi_pcib_pci_probe(device_t dev)
{
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
if (pci_get_class(dev) != PCIC_BRIDGE ||
pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
acpi_disabled("pci"))
return (ENXIO);
if (acpi_get_handle(dev) == NULL)
return (ENXIO);
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
if (pci_cfgregopen() == 0)
Make sure that ACPI PCI driver probe routine call pci_cfgregopen() before start accessing PCI config space. Reviewed by: jhb
2002-10-05 02:16:49 +00:00
return (ENXIO);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
device_set_desc(dev, "ACPI PCI-PCI bridge");
return (-1000);
}
static int
acpi_pcib_pci_attach(device_t dev)
{
struct acpi_pcib_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
pcib_attach_common(dev);
sc = device_get_softc(dev);
sc->ap_handle = acpi_get_handle(dev);
return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
}
Add code for ACPI PCI link object manipulation. This allocate the best IRQ to boot-disable devices (have IRQ 0). Allocated IRQ will be used for PCI interrupt routing when ACPI is enabled. Note that verbose messaging enabled for the time being so that people can easily notice the strange behavior if it happened.
2002-10-05 02:01:05 +00:00
static int
acpi_pcib_pci_resume(device_t dev)
{
Re-work ACPI PCI IRQ routing (_PRT, link devices). The old approach was incomplete in that the PRT routing was not aware of link programming. Fix this by doing all routing through the link devices. The new algorithm for setting up links is: 1. Read _CRS to get current setting. If invalid (not in _PRS), then set to 0. 2. Attempt to call _DIS on the link. If successful, mark the link as not routed. Otherwise, assume it still is. Then when a routing request occurs: 3. Update weights for all IRQs 4. Attempt to route the initial IRQ if valid 5. If that fails, walk through the sorted list, attempting to route IRQs. 6. Configure the trigger/polarity based on _PRS. Other changes: * Add acpi_pci_find_prt() to look up the PRT entry for a given device and acpi_pci_link_route() to select/route the best IRQ for it. * Remove duplicated code in acpi_pcib_route_interrupt() that picked the first IRQ from _PRS. * Remove unneeded arguments from acpi_pcib_resume() and friends. * Ignore _STA on link devices but report if it seems strange. * Add a prt_source handle to the PRT structure since the ACPI struct ACPI_PCI_ROUTING_TABLE uses a fixed-size entry for it. We'll need to dynamically size this object if we want to use it the same way ACPI-CA does. Null-terminate the source. Tested by: Luo Hong <luohong99_at_mails.tsinghua.edu.cn>, Jeffrey Katcher <jmkatcher_at_yahoo.com> Info from: jhb, Len Brown (Intel)
2004-08-11 14:52:50 +00:00
return (acpi_pcib_resume(dev));
Add code for ACPI PCI link object manipulation. This allocate the best IRQ to boot-disable devices (have IRQ 0). Allocated IRQ will be used for PCI interrupt routing when ACPI is enabled. Note that verbose messaging enabled for the time being so that people can easily notice the strange behavior if it happened.
2002-10-05 02:01:05 +00:00
}
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
static int
acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
struct acpi_pcib_softc *sc = device_get_softc(dev);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
switch (which) {
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
case ACPI_IVAR_HANDLE:
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
*result = (uintptr_t)sc->ap_handle;
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
return (0);
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
}
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
return (pcib_read_ivar(dev, child, which, result));
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
}
static int
acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
{
struct acpi_pcib_softc *sc;
sc = device_get_softc(pcib);
If an ACPI PCI-PCI bridge doesn't have a _PRT object, fall back to using the swizzle method for routing PCI interrupts across the bridge. This fixes problems with motherboards (typically laptops) whose BIOS doesn't provide a PRT for the AGP bridge even though there is a device entry for the bridge in the ACPI namespace. Tested by: Kenneth Culver culverk at sweetdreamsracing dot biz
2004-05-10 18:26:22 +00:00
/*
* If we don't have a _PRT, fall back to the swizzle method
* for routing interrupts.
*/
if (sc->ap_prt.Pointer == NULL)
Style cleanups, don't set the device description before the probe routine has completed successfully.
2004-05-29 04:32:50 +00:00
return (pcib_route_interrupt(pcib, dev, pin));
If an ACPI PCI-PCI bridge doesn't have a _PRT object, fall back to using the swizzle method for routing PCI interrupts across the bridge. This fixes problems with motherboards (typically laptops) whose BIOS doesn't provide a PRT for the AGP bridge even though there is a device entry for the bridge in the ACPI namespace. Tested by: Kenneth Culver culverk at sweetdreamsracing dot biz
2004-05-10 18:26:22 +00:00
else
Rework the ACPI PCI link code. - Use a new-bus device driver for the ACPI PCI link devices. The devices are called pci_linkX. The driver includes suspend/resume support so that the ACPI bridge drivers no longer have to poke the links to get them to handle suspend/resume. Also, the code to handle which IRQs a link is routed to and choosing an IRQ when a link is not already routed is all contained in the link driver. The PCI bridge drivers now ask the link driver which IRQ to use once they determine that a _PRT entry does not use a hardwired interrupt number. - The new link driver includes support for multiple IRQ resources per link device as well as preserving any non-IRQ resources when adjusting the IRQ that a link is routed to. - The entire approach to routing when using a link device is now link-centric rather than pci bus/device/pin specific. Thus, when using a tunable to override the default IRQ settings, one now uses a single tunable to route an entire link rather than routing a single device that uses the link (which has great foot-shooting potential if the user tries to route the same link to two different IRQs using two different pci bus/device/pin hints). For example, to adjust the IRQ that \_SB_.LNKA uses, one would set 'hw.pci.link.LNKA.irq=10' from the loader. - As a side effect of having the link driver, unused link devices will now be disabled when they are probed. - The algorithm for choosing an IRQ for a link that doesn't already have an IRQ assigned is now much closer to the one used in $PIR routing. When a link is routed via an ISA IRQ, only known-good IRQs that the BIOS has already used are used for routing instead of using probabilities to guess at which IRQs are probably not used by an ISA device. One change from $PIR is that the SCI is always considered a viable ISA IRQ, so that if the BIOS does not setup any IRQs the kernel will degenerate to routing all interrupts over the SCI. For non ISA IRQs, interrupts are picked from the possible pool using a simplistic weighting algorithm. Tested by: ru, scottl, others on acpi@ Reviewed by: njl
2004-11-23 22:26:44 +00:00
return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
Overhaul the ACPI PCI bridge driver a bit: - Add an ACPI PCI-PCI bridge driver (the previous driver just handled Host-PCI bridges) that is a PCI driver that is a subclass of the generic PCI-PCI bridge driver. It overrides probe, attach, read_ivar, and pci_route_interrupt. - The probe routine only succeeds if our parent is an ACPI PCI bus which we test for by seeing if we can read our ACPI_HANDLE as an ivar. - The attach routine saves a copy of our handle and calls the new acpi_pcib_attach_common() function described below. - The read_ivar routine handles normal PCI-PCI bridge ivars and adds an ivar to return the ACPI_HANDLE of the bus this bridge represents. - The route_interrupt routine fetches the _PRT (PCI Interrupt Routing Table) from the bridge device's softc and passes it off to acpi_pcib_route_interrupt() to route the interrupt. - Split the old ACPI Host-PCI bridge driver into two pieces. Part of the attach routine and most of the route_interrupt routine remain in acpi_pcib.c and are shared by both ACPI PCI bridge drivers. - The attach routine verifies the PCI bridge is present, reads in the _PRT for the bridge, and attaches the child PCI bus. - The route_interrupt routine uses the passed in _PRT to route a PCI interrupt. The rest of the driver is the ACPI Host-PCI bridge specific bits that live in acpi_pcib_acpi.c. - We no longer duplicate pcib_maxslots but use it directly. - The driver now uses the pcib devclass instead of its own devclass. This means that PCI busses are now only children of pcib devices. - Allow the ACPI_HANDLE for the child PCI bus to be read as an ivar of the child bus. - Fetch the _PRT for routing PCI interrupts directly from our softc instead of walking the devclass to find ourself and then fetch our own softc. With this change and the new ACPI PCI bus driver, ACPI can now properly route interrupts for devices behind PCI-PCI bridges. That is, the Itanium2 with like 10 PCI busses can now boot ok and route all the PCI interrupts. Hopefully this will also fix problems people are having with CardBus bridges behind PCI-PCI bridges not properly routing interrupts when ACPI is used. Tested on: i386, ia64
2002-08-26 18:30:27 +00:00
}
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