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62508c531e
method is used by the PCI bus driver to query the power management system to determine the proper device state to be used for a device during suspend and resume. For the ACPI PCI bridge drivers this calls acpi_device_pwr_for_sleep(). This removes ACPI-specific knowledge from the PCI and PCI-PCI bridge drivers. Reviewed by: jkim
157 lines
4.0 KiB
Objective-C
157 lines
4.0 KiB
Objective-C
#-
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# Copyright (c) 2000 Doug Rabson
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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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# $FreeBSD$
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#
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#include <sys/bus.h>
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#include <dev/pci/pcivar.h>
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INTERFACE pcib;
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CODE {
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static int
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null_route_interrupt(device_t pcib, device_t dev, int pin)
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{
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return (PCI_INVALID_IRQ);
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}
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};
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#
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# Return the number of slots on the attached PCI bus.
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#
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METHOD int maxslots {
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device_t dev;
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};
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#
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# Read configuration space on the PCI bus. The bus, slot and func
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# arguments determine the device which is being read and the reg
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# argument is a byte offset into configuration space for that
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# device. The width argument (which should be 1, 2 or 4) specifies how
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# many byte of configuration space to read from that offset.
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#
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METHOD u_int32_t read_config {
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device_t dev;
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u_int bus;
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u_int slot;
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u_int func;
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u_int reg;
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int width;
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};
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#
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# Write configuration space on the PCI bus. The bus, slot and func
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# arguments determine the device which is being written and the reg
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# argument is a byte offset into configuration space for that
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# device. The value field is written to the configuration space, with
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# the number of bytes written depending on the width argument.
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#
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METHOD void write_config {
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device_t dev;
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u_int bus;
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u_int slot;
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u_int func;
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u_int reg;
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u_int32_t value;
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int width;
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};
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#
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# Route an interrupt. Returns a value suitable for stuffing into
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# a device's interrupt register.
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#
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METHOD int route_interrupt {
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device_t pcib;
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device_t dev;
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int pin;
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} DEFAULT null_route_interrupt;
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#
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# Allocate 'count' MSI messsages mapped onto 'count' IRQs. 'irq' points
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# to an array of at least 'count' ints. The max number of messages this
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# device supports is included so that the MD code can take that into
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# account when assigning resources so that the proper number of low bits
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# are clear in the resulting message data value.
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#
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METHOD int alloc_msi {
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device_t pcib;
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device_t dev;
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int count;
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int maxcount;
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int *irqs;
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};
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#
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# Release 'count' MSI messages mapped onto 'count' IRQs stored in the
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# array pointed to by 'irqs'.
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#
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METHOD int release_msi {
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device_t pcib;
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device_t dev;
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int count;
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int *irqs;
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};
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#
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# Allocate a single MSI-X message mapped onto '*irq'.
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#
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METHOD int alloc_msix {
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device_t pcib;
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device_t dev;
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int *irq;
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};
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#
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# Release a single MSI-X message mapped onto 'irq'.
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#
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METHOD int release_msix {
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device_t pcib;
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device_t dev;
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int irq;
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};
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#
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# Determine the MSI/MSI-X message address and data for 'irq'. The address
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# is returned in '*addr', and the data in '*data'.
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#
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METHOD int map_msi {
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device_t pcib;
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device_t dev;
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int irq;
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uint64_t *addr;
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uint32_t *data;
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};
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#
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# Return the device power state to be used during a system sleep state
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# transition such as suspend and resume.
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#
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METHOD int power_for_sleep {
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device_t pcib;
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device_t dev;
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int *pstate;
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};
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