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27ca384cb7
linux/drivers/misc
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Omer Shpigelman 27ca384cb7 habanalabs: add MMU DRAM default page mapping 
This patch provides a workaround for a H/W bug in Goya, where access to
RAZWI from TPC can cause PCI completion timeout.

The WA is to use the device MMU to map any unmapped DRAM memory to a
default page in the DRAM. That way, the TPC will never reach RAZWI upon
accessing a bad address in the DRAM.

When a DRAM page is mapped by the user, its default mapping is
overwritten. Once that page is unmapped, the MMU driver will map that page
to the default page.

To help debugging, the driver will set the default page area to 0x99 on
device initialization.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
..
altera-stapl altera-stapl: check for a null key before strcasecmp'ing it 2018-11-27 08:44:07 +01:00
c2port kmemcheck: remove annotations 2017-11-15 18:21:04 -08:00
cardreader misc: rtsx: Enable OCP for rts522a rts524a rts525a rts5260 2019-02-26 12:53:55 +01:00
cb710 cb710: Convert to new IDA API 2018-08-21 23:54:18 -04:00
cxl cxl: drop the dma_set_mask callback from vphb 2018-12-20 22:21:20 +11:00
echo misc: echo: Remove unnecessary parentheses and simplify check for zero 2018-09-25 20:21:02 +02:00
eeprom eeprom: at24: add support for 24c2048 2018-12-10 16:23:27 +01:00
genwqe cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
habanalabs habanalabs: add MMU DRAM default page mapping 2019-02-28 13:04:59 +01:00
ibmasm ibmasm: don't write out of bounds in read handler 2018-07-07 09:59:35 +02:00
lis3lv02d vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
lkdtm lkdtm: change snprintf to scnprintf for possible overflow 2019-01-18 16:34:05 +01:00
mei mei-hdcp driver 2019-02-28 12:55:40 +01:00
mic misc: mic/scif: mark expected switch fall-through 2019-02-27 16:00:20 +01:00
ocxl ocxl: Fix endiannes bug in read_afu_name() 2018-12-21 14:46:50 +11:00
sgi-gru misc/sgi-gru/grufault: fix a style error 2019-01-18 16:34:06 +01:00
sgi-xp sgi-xp: Replace spin_is_locked() with lockdep 2018-10-15 20:54:17 +02:00
ti-st misc: ti-st: make array read_ver_cmd static, shrinks object size 2018-12-06 15:53:15 +01:00
vmw_vmci VMCI: Support upto 64-bit PPNs 2019-02-26 12:53:55 +01:00
ad525x_dpot-i2c.c drivers: misc: ad525x_dpot: Update MODULE AUTHOR email address 2018-09-14 15:36:20 +02:00
ad525x_dpot-spi.c drivers: misc: ad525x_dpot: Update MODULE AUTHOR email address 2018-09-14 15:36:20 +02:00
ad525x_dpot.c drivers: misc: ad525x_dpot: clean indentation issue, remove tabs 2019-01-18 16:34:05 +01:00
ad525x_dpot.h misc: ad525x_dpot: Unnecessary space before function pointer arguments 2017-12-18 15:59:17 +01:00
apds990x.c misc: apds990x: remove unused array ir_currents 2018-09-12 09:46:46 +02:00
apds9802als.c misc: apds9802als: constify i2c_device_id 2017-08-28 16:55:49 +02:00
aspeed-lpc-ctrl.c misc: aspeed-lpc-ctrl: Enable FWH and A2H bridge cycles 2018-03-15 18:20:51 +01:00
aspeed-lpc-snoop.c drivers/misc: Aspeed LPC snoop output using misc chardev 2018-07-16 13:30:47 +02:00
atmel_tclib.c
atmel-ssc.c misc: atmel-ssc: Fix section annotation on atmel_ssc_get_driver_data 2018-11-11 09:13:19 -08:00
bh1770glc.c misc: bh1770glc: remove unused array prox_curr_ma 2018-09-12 09:46:46 +02:00
cs5535-mfgpt.c
ds1682.c misc: ds1682: Ignore update-in-progress ETC reads 2018-01-09 17:03:57 +01:00
dummy-irq.c
enclosure.c misc: enclosure: Use struct_size() in kzalloc() 2019-01-18 16:34:06 +01:00
fastrpc.c misc: fastrpc: Fix return value check in fastrpc_map_create() 2019-02-19 14:50:11 +01:00
fsa9480.c misc: fsa9480: Add blank line after declarations. 2018-01-09 17:03:57 +01:00
hmc6352.c misc: hmc6352: fix potential Spectre v1 2018-09-12 09:31:00 +02:00
hpilo.c misc: hpilo: Do not claim unsupported hardware 2019-02-27 16:00:21 +01:00
hpilo.h misc: hpilo: Use SPDX-License-Identifier 2017-12-07 18:45:31 +01:00
ibmvmc.c misc: ibmvsm: Fix potential NULL pointer dereference 2019-01-18 14:14:14 +01:00
ibmvmc.h misc: IBM Virtual Management Channel Driver (VMC) 2018-05-14 16:35:42 +02:00
ics932s401.c misc/ics932s401: Add a missing check to i2c_smbus_read_word_data 2019-01-18 16:34:06 +01:00
ioc4.c misc: ioc4: constify pci_device_id. 2017-08-28 16:55:48 +02:00
isl29003.c misc: isl29003: Missing a blank line after declarations 2017-12-07 18:45:31 +01:00
isl29020.c misc: isl29020: constify i2c_device_id 2017-08-28 16:55:49 +02:00
Kconfig misc: fastrpc: select CONFIG_DMA_SHARED_BUFFER 2019-02-19 14:50:11 +01:00
kgdbts.c misc: kgdbts: Fix restrict error 2018-09-25 20:21:02 +02:00
lattice-ecp3-config.c
Makefile habanalabs: add skeleton driver 2019-02-18 09:46:43 +01:00
pch_phub.c MISC: add const to bin_attribute structures 2017-08-28 16:55:48 +02:00
pci_endpoint_test.c pci_endpoint_test: Add 2 ioctl commands 2018-07-19 11:46:57 +01:00
phantom.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
pti.c drivers/misc/intel/pti: Rename the header file to free up the namespace 2017-12-17 12:52:34 +01:00
pvpanic.c misc: pvpanic: fix warning implicit declaration 2019-01-18 16:42:05 +01:00
qcom-coincell.c
spear13xx_pcie_gadget.c
sram-exec.c
sram.c misc: sram: remove redundant null pointer check before of_node_put 2018-09-25 20:20:59 +02:00
sram.h
tifm_7xx1.c misc: tifm: Remove VLA 2018-04-23 13:31:27 +02:00
tifm_core.c
tsl2550.c tsl2550: fix lux1_input error in low light 2018-07-07 17:44:52 +02:00
vexpress-syscfg.c misc: vexpress: Off by one in vexpress_syscfg_exec() 2018-12-06 15:42:18 +01:00
vmw_balloon.c vmw_balloon: release lock on error in vmballoon_reset() 2019-02-12 10:38:47 +01:00