mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-10-19 02:29:40 +00:00
Code Issues Releases Activity

LinuxKPI: pm: add SET_SYSTEM_SLEEP_PM_OPS() and device_can_wakeup()

Browse Source 
Add the SET_SYSTEM_SLEEP_PM_OPS() by factoring some other macro code
out in order to set the suspend/resume functions when the struct is
already given.  Such is the case in iwlwifi d3.

Also add an initial implementation of device_can_wakeup().  Though
this is likely all we need we have no way of setting the flag for it
yet so leave a pr_debug() and a comment there as well.  Until we want
to support WoWLAN this is likely not needed for wireless.
Doing it the proper way checking a bool in 'struct dev_pm_info' would
change 'struct device' and with that 'struct pci_dev' and break the
KBI.  In favour of mergeability this version does not implement the
full functionality yet.

Both help to make an updated iwlwifi d3 compile.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Differential Revision: https://reviews.freebsd.org/D45358
This commit is contained in:
Bjoern A. Zeeb 2024-04-06 21:15:16 +00:00
parent 8866534929
commit 3753988c5d
2 changed files with 35 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
sys/compat/linuxkpi/common/include/linux/pm.h
View File

@ -1,7 +1,7 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 The FreeBSD Foundation
* Copyright (c) 2020-2024 The FreeBSD Foundation
*
* This software was developed by Björn Zeeb under sponsorship from
* the FreeBSD Foundation.
@ -58,25 +58,26 @@ struct dev_pm_info {
IS_ENABLED(CONFIG_PM_SLEEP) ? (_p) : NULL
#ifdef CONFIG_PM_SLEEP
#define __SET_PM_OPS(_suspendfunc, _resumefunc) \
.suspend = _suspendfunc, \
.resume = _resumefunc, \
.freeze = _suspendfunc, \
.thaw = _resumefunc, \
.poweroff = _suspendfunc, \
.restore = _resumefunc, \
#define SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc) \
const struct dev_pm_ops _name = { \
.suspend = _suspendfunc, \
.resume = _resumefunc, \
.freeze = _suspendfunc, \
.thaw = _resumefunc, \
.poweroff = _suspendfunc, \
.restore = _resumefunc, \
__SET_PM_OPS(_suspendfunc, _resumefunc) \
}
#define DEFINE_SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc) \
const struct dev_pm_ops _name = { \
.suspend = _suspendfunc, \
.resume = _resumefunc, \
.freeze = _suspendfunc, \
.thaw = _resumefunc, \
.poweroff = _suspendfunc, \
.restore = _resumefunc, \
__SET_PM_OPS(_suspendfunc, _resumefunc) \
}
#define SET_SYSTEM_SLEEP_PM_OPS(_suspendfunc, _resumefunc) \
__SET_PM_OPS(_suspendfunc, _resumefunc)
#else
#define SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc) \
const struct dev_pm_ops _name = { \
@ -86,6 +87,9 @@ const struct dev_pm_ops _name = { \
}
#endif
bool linuxkpi_device_can_wakeup(struct device *);
#define device_can_wakeup(_dev) linuxkpi_device_can_wakeup(_dev)
static inline void
pm_wakeup_event(struct device *dev __unused, unsigned int x __unused)
{

18
sys/compat/linuxkpi/common/src/linux_compat.c
View File

@ -2597,6 +2597,24 @@ io_mapping_create_wc(resource_size_t base, unsigned long size)
return (io_mapping_init_wc(mapping, base, size));
}
/* We likely want a linuxkpi_device.c at some point. */
bool
device_can_wakeup(struct device *dev)
{
if (dev == NULL)
return (false);
/*
* XXX-BZ iwlwifi queries it as part of enabling WoWLAN.
* Normally this would be based on a bool in dev->power.XXX.
* Check such as PCI PCIM_PCAP_*PME. We have no way to enable this yet.
* We may get away by directly calling into bsddev for as long as
* we can assume PCI only avoiding changing struct device breaking KBI.
*/
pr_debug("%s:%d: not enabled; see comment.\n", __func__, __LINE__);
return (false);
}
#if defined(__i386__) || defined(__amd64__)
bool linux_cpu_has_clflush;
struct cpuinfo_x86 boot_cpu_data;