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bbd5ff50af
linux/arch/powerpc/platforms/powernv
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Alistair Popple bbd5ff50af powerpc/powernv/npu-dma: Add explicit flush when sending an ATSD 
NPU2 requires an extra explicit flush to an active GPU PID when
sending address translation shoot downs (ATSDs) to reliably flush the
GPU TLB. This patch adds just such a flush at the end of each sequence
of ATSDs.

We can safely use PID 0 which is always reserved and active on the
GPU. PID 0 is only used for init_mm which will never be a user mm on
the GPU. To enforce this we add a check in pnv_npu2_init_context()
just in case someone tries to use PID 0 on the GPU.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
[mpe: Use true/false for bool literals]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-06-22 21:21:08 +10:00
..
eeh-powernv.c powerpc/powernv: Block PCI config access on BCM5718 during EEH recovery 2017-05-04 10:57:56 +10:00
idle.c powerpc/64s: Stop using bit in HSPRG0 to test winkle 2017-04-23 20:31:39 +10:00
Kconfig powerpc/powernv: Always enable SMP when building powernv 2017-04-13 23:37:17 +10:00
Makefile powerpc/powernv: Split cxl code out into a separate file 2016-07-14 20:26:31 +10:00
npu-dma.c powerpc/powernv/npu-dma: Add explicit flush when sending an ATSD 2017-06-22 21:21:08 +10:00
opal-async.c powerpc/opal: Wake up kopald polling thread before waiting for events 2016-07-08 19:53:26 +10:00
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/powernv: Add interfaces for flash device access 2015-04-11 20:49:21 +10:00
opal-hmi.c powerpc/powernv: Display the correct error info for CAPP errors. 2017-02-09 10:31:36 +11:00
opal-irqchip.c powerpc/opal-irqchip: Use interrupt names if present 2017-02-09 10:31:37 +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/powernv: Fix spelling mistake "Retrived" -> "Retrieved" 2016-06-28 13:52:18 +10:00
opal-msglog.c powerpc/powernv: Report size of OPAL memcons log 2017-01-25 13:33:55 +11:00
opal-nvram.c powerpc/powernv: Add pstore support on powernv 2015-03-23 14:06:10 +11:00
opal-power.c powerpc/powernv: Add poweroff (EPOW, DPO) events support for PowerNV platform 2015-07-16 13:34:36 +10:00
opal-prd.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
opal-rtc.c powerpc/powernv: Only delay opal_rtc_read() retry when necessary 2015-12-27 19:12:40 +11:00
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 Merge branch 'topic/xive' (early part) into next 2017-04-12 22:31:37 +10:00
opal-xscom.c powerpc/powernv: Fix XSCOM address mangling for form 1 indirect 2017-03-28 10:52:03 +11:00
opal.c Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD 2017-05-09 11:50:01 +02:00
pci-cxl.c powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
pci-ioda.c pci-v4.12-changes 2017-05-08 19:03:25 -07:00
pci.c powerpc/powernv: Check kzalloc() return value in pnv_pci_table_alloc 2017-04-28 21:26:53 +10:00
pci.h powerpc/powernv: Fix TCE kill on NVLink2 2017-05-03 20:45:55 +10:00
powernv.h powerpc/powernv: Move CPU-Offline idle state invocation from smp.c to idle.c 2017-04-11 08:45:09 +10:00
rng.c powerpc: Consolidate variants of real-mode MMIOs 2017-04-10 21:43:16 +10:00
setup.c Merge branch 'topic/xive' (early part) into next 2017-04-12 22:31:37 +10:00
smp.c powerpc: Add struct smp_ops_t.cause_nmi_ipi operation 2017-04-28 21:02:25 +10:00
subcore-asm.S powerpc/powernv: Add support for POWER8 split core on powernv 2014-05-28 13:35:37 +10:00
subcore.c powerpc/64: Reclaim CPU_FTR_SUBCORE 2017-06-01 19:56:28 +10:00
subcore.h powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00