linux/drivers
Lucas Stach 17e4660ae3 drm/etnaviv: implement per-process address spaces on MMUv2
This builds on top of the MMU contexts introduced earlier. Instead of having
one context per GPU core, each GPU client receives its own context.

On MMUv1 this still means a single shared pagetable set is used by all
clients, but on MMUv2 there is now a distinct set of pagetables for each
client. As the command fetch is also translated via the MMU on MMUv2 the
kernel command ringbuffer is mapped into each of the client pagetables.

As the MMU context switch is a bit of a heavy operation, due to the needed
cache and TLB flushing, this patch implements a lazy way of switching the
MMU context. The kernel does not have its own MMU context, but reuses the
last client context for all of its operations. This has some visible impact,
as the GPU can now only be started once a client has submitted some work and
we got the client MMU context assigned. Also the MMU context has a different
lifetime than the general client context, as the GPU might still execute the
kernel command buffer in the context of a client even after the client has
completed all GPU work and has been terminated. Only when the GPU is runtime
suspended or switches to another clients MMU context is the old context
freed up.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
2019-08-15 11:44:27 +02:00
..
accessibility
acpi Merge branch 'akpm' (patches from Andrew) 2019-07-19 09:45:58 -07:00
amba Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
android
ata for-5.3/libata-20190708 2019-07-09 10:59:26 -07:00
atm atm: idt77252: Remove call to memset after dma_alloc_coherent 2019-07-15 11:06:27 -07:00
auxdisplay It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
base Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
bcma
block Lots of exciting things this time! 2019-07-18 11:05:25 -07:00
bluetooth Bluetooth: btusb: Add protocol support for MediaTek MT7663U USB devices 2019-07-06 21:44:25 +02:00
bus ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
cdrom
char docs: admin-guide: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
clk This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
clocksource clocksource/drivers/npcm: Fix misuse of GENMASK macro 2019-07-10 11:05:26 +02:00
connector
counter Staging / IIO driver update for 5.3-rc1 2019-07-11 15:36:02 -07:00
cpufreq Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
cpuidle Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-19 12:23:37 -07:00
dax Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
dca
devfreq
dio
dma dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
dma-buf Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
edac
eisa
extcon
firewire
firmware ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
fpga mm: add account_locked_vm utility function 2019-07-16 19:23:25 -07:00
fsi
gnss
gpio GPIO fixes for the v5.3 merge window: 2019-07-17 13:05:21 -07:00
gpu drm/etnaviv: implement per-process address spaces on MMUv2 2019-08-15 11:44:27 +02:00
hid Linux 5.2 2019-07-15 09:42:32 -07:00
hsi
hv proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
hwmon ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
hwspinlock
hwtracing coresight: Make the coresight_device_fwnode_match declaration's fwnode parameter const 2019-07-12 14:42:05 -07:00
i2c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
i3c * Drop support for 10-bit I2C addresses 2019-07-09 09:04:31 -07:00
ide It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
idle
iio Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
infiniband SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2019-07-20 12:22:30 -07:00
interconnect
iommu iommu/amd: fix a crash in iova_magazine_free_pfns 2019-07-21 09:57:13 -07:00
ipack TTY / Serial driver updates for 5.3-rc1 2019-07-11 15:38:21 -07:00
irqchip irqchip/gic-v3-its: Fix misuse of GENMASK macro 2019-07-10 11:04:17 +02:00
isdn ISDN: hfcsusb: checking idx of ep configuration 2019-07-15 11:10:31 -07:00
leds LED updates for 5.3-rc1 2019-07-09 08:59:39 -07:00
lightnvm
macintosh powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
mailbox - stm32: race fix by adding a spinlock 2019-07-14 16:36:51 -07:00
mcb
md - Fix zone state management race in DM zoned target by eliminating 2019-07-18 14:49:33 -07:00
media Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-07-11 10:55:49 -07:00
memory Kbuild updates for v5.3 (2nd) 2019-07-20 09:34:55 -07:00
memstick MMC core: 2019-07-11 18:11:21 -07:00
message SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
mfd - Core Frameworks 2019-07-15 20:18:40 -07:00
misc Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
mmc MMC core: 2019-07-11 18:11:21 -07:00
mtd docs: mtd: move it to the driver-api book 2019-07-15 09:20:28 -03:00
mux
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-07-19 10:06:06 -07:00
nfc
ntb New feature to add support for NTB virtual MSI interrupts, the ability 2019-07-21 09:46:59 -07:00
nubus
nvdimm Merge branch 'akpm' (patches from Andrew) 2019-07-19 09:45:58 -07:00
nvme for-linus-20190715 2019-07-15 21:20:52 -07:00
nvmem Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
of virtio, vhost: fixes, features, performance 2019-07-17 11:26:09 -07:00
opp pci-v5.3-changes 2019-07-15 20:44:49 -07:00
oprofile vfs: Convert oprofilefs to use the new mount API 2019-07-04 22:01:59 -04:00
parisc
parport It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
pci New feature to add support for NTB virtual MSI interrupts, the ability 2019-07-21 09:46:59 -07:00
pcmcia It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
perf docs: perf: move to the admin-guide 2019-07-15 09:20:27 -03:00
phy
pinctrl This is the bulk of pin control changes for the v5.3 kernel 2019-07-13 15:02:27 -07:00
platform platform/x86: asus: Rename "fan mode" to "fan boost mode" 2019-07-17 19:07:58 +03:00
pnp docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
power power supply and reset changes for the v5.3 series 2019-07-15 21:06:15 -07:00
powercap powercap/rapl: Add Ice Lake NNPI support to RAPL driver 2019-07-11 15:08:58 +02:00
pps drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl 2019-07-16 19:23:24 -07:00
ps3
ptp
pwm pwm: Changes for v5.3-rc1 2019-07-09 08:57:45 -07:00
rapidio Merge branch 'akpm' (patches from Andrew) 2019-07-17 08:58:04 -07:00
ras
regulator - Core Frameworks 2019-07-15 20:18:40 -07:00
remoteproc remoteproc updates for v5.3 2019-07-17 11:44:41 -07:00
reset ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
rpmsg
rtc RTC for 5.3 2019-07-17 10:03:50 -07:00
s390 SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
sbus
scsi SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
sfi
sh
siox
slimbus
sn
soc ARM: Device-tree updates 2019-07-19 17:19:24 -07:00
soundwire soundwire updates for v5.3-rc1 2019-07-05 08:15:08 +02:00
spi Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
spmi
ssb
staging docs conversion for v5.3-rc1 2019-07-16 12:21:41 -07:00
target SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
tc
tee
thermal More power management updates for 5.3-rc1 2019-07-18 09:32:28 -07:00
thunderbolt Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
tty ARM: SoC platform updates 2019-07-19 17:05:08 -07:00
uio
usb Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
uwb
vfio VFIO updates for v5.3-rc1 2019-07-17 11:23:13 -07:00
vhost virtio, vhost: fixes, features, performance 2019-07-17 11:26:09 -07:00
video - New Functionality 2019-07-16 09:25:04 -07:00
virt
virtio Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
visorbus
vlynq
vme
w1 docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
watchdog watchdog: digicolor_wdt: Remove unused variable in dc_wdt_probe 2019-07-15 08:49:11 +02:00
xen xen: fixes and features for 5.3-rc1 2019-07-19 11:41:26 -07:00
zorro
Kconfig
Makefile