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86cd6d9802
linux_dsm_epyc7002/arch/powerpc/platforms/powernv
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Cyril Bur 86cd6d9802 powerpc/opal: Rework the opal-async interface 
Future work will add an opal_async_wait_response_interruptible()
which will call wait_event_interruptible(). This work requires extra
token state to be tracked as wait_event_interruptible() can return and
the caller could release the token before OPAL responds.

Currently token state is tracked with two bitfields which are 64 bits
big but may not need to be as OPAL informs Linux how many async tokens
there are. It also uses an array indexed by token to store response
messages for each token.

The bitfields make it difficult to add more state and also provide a
hard maximum as to how many tokens there can be - it is possible that
OPAL will inform Linux that there are more than 64 tokens.

Rather than add a bitfield to track the extra state, rework the
internals slightly.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Fix __opal_async_get_token() when no tokens are free]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-11-06 20:33:54 +11:00
..
copy-paste.h powerpc/powernv/vas: Define copy/paste interfaces 2017-08-31 14:26:38 +10:00
eeh-powernv.c powerpc/powernv: Rework EEH initialization on powernv 2017-09-26 11:19:07 +10:00
idle.c powerpc/powernv: Clear LPCR[PECE1] via stop-api only for deep state offline 2017-09-20 13:30:09 +10:00
Kconfig powerpc/powernv/vas: Define vas_init() and vas_exit() 2017-08-31 14:26:26 +10:00
Makefile powerpc/powernv/vas: Define vas_init() and vas_exit() 2017-08-31 14:26:26 +10:00
memtrace.c powerpc/powernv: Enable removal of memory for in memory tracing 2017-08-24 22:14:38 +10:00
npu-dma.c powerpc updates for 4.14 2017-09-07 10:15:40 -07:00
opal-async.c powerpc/opal: Rework the opal-async interface 2017-11-06 20:33:54 +11:00
opal-dump.c powerpc/powernv : Drop reference added by kset_find_obj() 2016-08-29 12:48:21 +10:00
opal-elog.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
opal-flash.c powerpc: Add const to bin_attribute structures 2017-08-17 21:56:26 +10:00
opal-hmi.c powerpc-opal: Fix a typo in a comment line of two file headers 2017-10-22 12:16:36 +02:00
opal-imc.c powerpc/powernv: Fix build error in opal-imc.c when NUMA=n 2017-08-28 22:09:57 +10:00
opal-irqchip.c powerpc/powernv: Make opal_event_shutdown() callable from IRQ context 2017-10-06 20:03:08 +11:00
opal-kmsg.c powerpc/powernv: Fix OPAL_CONSOLE_FLUSH prototype and usages 2016-01-13 12:35:17 +11:00
opal-lpc.c powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there 2017-04-11 07:46:03 +10:00
opal-memory-errors.c powerpc-opal: Fix a typo in a comment line of two file headers 2017-10-22 12:16:36 +02:00
opal-msglog.c powerpc/powernv: Report size of OPAL memcons log 2017-01-25 13:33:55 +11:00
opal-nvram.c
opal-power.c powerpc/powernv: Add poweroff (EPOW, DPO) events support for PowerNV platform 2015-07-16 13:34:36 +10:00
opal-powercap.c powerpc/powernv: Add support for powercap framework 2017-08-10 22:39:53 +10:00
opal-prd.c powerpc/powernv: use memdup_user 2017-07-24 21:48:42 +10:00
opal-psr.c powerpc/powernv: Add support to set power-shifting-ratio 2017-08-10 22:40:01 +10:00
opal-rtc.c powerpc/powernv: Only delay opal_rtc_read() retry when necessary 2015-12-27 19:12:40 +11:00
opal-sensor-groups.c powerpc/powernv: Add support to clear sensor groups data 2017-08-10 22:40:05 +10:00
opal-sensor.c powerpc/powernv: Handle OPAL_WRONG_STATE in opal_get_sensor_data() 2017-03-31 15:22:56 +11:00
opal-sysparam.c powerpc/opal: Add inline function to get rc from an ASYNC_COMP opal_msg 2016-06-29 17:33:18 +10:00
opal-tracepoints.c tracing: Have the reg function allow to fail 2016-12-09 09:13:30 -05:00
opal-wrappers.S powerpc/powernv: Use FIXUP_ENDIAN_HV in OPAL return 2017-11-06 16:48:09 +11:00
opal-xscom.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
opal.c powerpc/powernv: Use kernel crash path for machine checks 2017-08-31 14:26:04 +10:00
pci-cxl.c powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
pci-ioda.c powerpc/powernv: Reserve a hole which appears after enabling IOV 2017-11-06 16:48:12 +11:00
pci.c powerpc/powernv: Enable PCI peer-to-peer 2017-08-08 11:27:30 +10:00
pci.h powerpc/powernv: Rework EEH initialization on powernv 2017-09-26 11:19:07 +10:00
powernv.h powerpc/powernv: Flush console before platform error reboot 2017-08-31 14:26:03 +10:00
rng.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
setup.c powerpc/powernv: Enable TM without suspend if possible 2017-10-21 09:33:05 +11:00
smp.c powerpc/powernv: Implement NMI IPI with OPAL_SIGNAL_SYSTEM_RESET 2017-10-04 11:27:27 +11:00
subcore-asm.S
subcore.c powerpc updates for 4.13 2017-07-07 13:55:45 -07:00
subcore.h
vas-window.c powerpc/powernv/vas: Define copy/paste interfaces 2017-08-31 14:26:38 +10:00
vas.c powerpc/powernv/vas: Define vas_init() and vas_exit() 2017-08-31 14:26:26 +10:00
vas.h powerpc/powernv/vas: Define copy/paste interfaces 2017-08-31 14:26:38 +10:00