linux-stable/drivers/misc
Ian Munsie cbce0917e2 cxl: Add preliminary workaround for CX4 interrupt limitation
The Mellanox CX4 has a hardware limitation where only 4 bits of the
AFU interrupt number can be passed to the XSL when sending an interrupt,
limiting it to only 15 interrupts per context (AFU interrupt number 0 is
invalid).

In order to overcome this, we will allocate additional contexts linked
to the default context as extra address space for the extra interrupts -
this will be implemented in the next patch.

This patch adds the preliminary support to allow this, by way of adding
a linked list in the context structure that we use to keep track of the
contexts dedicated to interrupts, and an API to simultaneously iterate
over the related context structures, AFU interrupt numbers and hardware
interrupt numbers. The point of using a single API to iterate these is
to hide some of the details of the iteration from external code, and to
reduce the number of APIs that need to be exported via base.c to allow
built in code to call.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-14 20:27:02 +10:00
..
altera-stapl
c2port
cb710
cxl cxl: Add preliminary workaround for CX4 interrupt limitation 2016-07-14 20:27:02 +10:00
echo
eeprom Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
genwqe
ibmasm mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
lis3lv02d
mei mei: bus: call mei_cl_read_start under device lock 2016-05-03 15:07:35 -07:00
mic misc: mic: Remove return statements from void functions 2016-04-30 13:53:19 -07:00
sgi-gru x86/platform/UV: Remove Obsolete GRU MMR address translation 2016-05-04 08:48:51 +02:00
sgi-xp
ti-st ti-st: Fix complete_all() wrong usage 2016-05-01 14:20:04 -07:00
vmw_vmci mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
ad525x_dpot-i2c.c
ad525x_dpot-spi.c
ad525x_dpot.c misc: ad525x_dpot: Fix the enabling of the "otpXen" attributes 2016-03-01 16:55:13 -08:00
ad525x_dpot.h
apds990x.c
apds9802als.c
arm-charlcd.c
atmel-ssc.c ASoC: atmel_ssc_dai: distinguish the different SSC 2016-03-02 23:43:11 +09:00
atmel_tclib.c
bh1770glc.c
bh1780gli.c
bmp085-i2c.c
bmp085-spi.c
bmp085.c
bmp085.h
cs5535-mfgpt.c
ds1682.c
dummy-irq.c
enclosure.c
fsa9480.c
hmc6352.c
hpilo.c
hpilo.h
ics932s401.c
ioc4.c
isl29003.c
isl29020.c
Kconfig
kgdbts.c
lattice-ecp3-config.c
lkdtm.c lkdtm: do not leak free page on kmalloc failure 2016-04-06 16:22:25 -07:00
Makefile
panel.c
pch_phub.c pch_phub: return -ENODATA if ROM can't be mapped 2016-03-05 12:19:39 -08:00
phantom.c
pti.c
qcom-coincell.c ARM: qcom: silence an uninitialized variable warning 2016-05-01 14:20:04 -07:00
spear13xx_pcie_gadget.c
sram.c misc: sram: fix check of devm_ioremap*() return value 2016-04-30 14:15:56 -07:00
ti_dac7512.c
tifm_7xx1.c
tifm_core.c
tsl2550.c
vexpress-syscfg.c
vmw_balloon.c