WSL2-Linux-Kernel/drivers
Dan Williams 384e624bb2 cxl/region: Attach endpoint decoders
CXL regions (interleave sets) are made up of a set of memory devices
where each device maps a portion of the interleave with one of its
decoders (see CXL 2.0 8.2.5.12 CXL HDM Decoder Capability Structure).
As endpoint decoders are identified by a provisioning tool they can be
added to a region provided the region interleave properties are set
(way, granularity, HPA) and DPA has been assigned to the decoder.

The attach event triggers several validation checks, for example:
- is the DPA sized appropriately for the region
- is the decoder reachable via the host-bridges identified by the
  region's root decoder
- is the device already active in a different region position slot
- are there already regions with a higher HPA active on a given port
  (per CXL 2.0 8.2.5.12.20 Committing Decoder Programming)

...and the attach event affords an opportunity to collect data and
resources relevant to later programming the target lists in switch
decoders, for example:
- allocate a decoder at each cxl_port in the decode chain
- for a given switch port, how many the region's endpoints are hosted
  through the port
- how many unique targets (next hops) does a port need to map to reach
  those endpoints

The act of reconciling this information and deploying it to the decoder
configuration is saved for a follow-on patch.

Co-developed-by: Ben Widawsky <bwidawsk@kernel.org>
Signed-off-by: Ben Widawsky <bwidawsk@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/165784337277.1758207.4108508181328528703.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2022-07-25 12:18:07 -07:00
..
accessibility Revert "speakup: Generate speakupmap.h automatically" 2022-05-20 21:07:05 +02:00
acpi More power management updates for 5.19-rc1 2022-05-30 11:37:26 -07:00
amba Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
android fix for breakage in #work.fd this window 2022-06-05 17:14:03 -07:00
ata ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files 2022-06-09 09:25:25 +09:00
atm
auxdisplay
base Merge tag 'fs_for_v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2022-06-17 10:09:24 -07:00
bcma
block xen: branch for v5.19-rc1b 2022-06-04 13:42:53 -07:00
bluetooth Bluetooth: btmtksdio: fix the reset takes too long 2022-05-13 13:19:01 +02:00
bus bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() 2022-06-10 15:53:12 +02:00
cdrom cdrom: remove obsolete TODO list 2022-05-15 18:31:28 -06:00
char Char/Misc driver fixes for 5.19-rc3 2022-06-17 07:58:39 -07:00
clk Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
clocksource clocksource: hyper-v: unexport __init-annotated hv_init_clocksource() 2022-06-08 12:27:08 +00:00
comedi comedi: vmk80xx: fix expression for tx buffer size 2022-06-10 15:21:23 +02:00
connector
counter
cpufreq ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
cpuidle Merge branches 'pm-em' and 'pm-cpuidle' 2022-05-23 19:18:51 +02:00
crypto virtio-crypto: enable retry for virtio-crypto-dev 2022-05-31 12:45:09 -04:00
cxl cxl/region: Attach endpoint decoders 2022-07-25 12:18:07 -07:00
dax dax: add .recovery_write dax_operation 2022-05-16 13:37:59 -07:00
dca
devfreq PM / devfreq: passive: Return non-error when not-supported event is required 2022-05-19 19:32:19 +02:00
dio drivers: dio: add missing iounmap() in dio_init() 2022-05-19 18:56:51 +02:00
dma dmaengine updates for v5.19-rc1 2022-05-29 11:38:27 -07:00
dma-buf drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
edac - A gargen variety of fixes which don't fit any other tip bucket: 2022-05-23 19:32:59 -07:00
eisa
extcon
firewire Merge branch 'for-linus' into for-next 2022-05-23 07:48:27 +02:00
firmware Follow-up tweaks for the EFI changes in v5.19 2022-06-03 13:39:30 -07:00
fpga
fsi
gnss
gpio gpio: dwapb: Don't print error on -EPROBE_DEFER 2022-06-10 14:26:15 +02:00
gpu two regression fixups 2022-06-17 11:32:35 +10:00
greybus
hid HID: hyperv: Correctly access fields declared as __le16 2022-06-08 12:28:13 +00:00
hsi
hte hte: Uninitialized variable in hte_ts_get() 2022-05-20 15:54:41 +02:00
hv Drivers: hv: vmbus: Release cpu lock in error case 2022-06-10 08:41:28 +00:00
hwmon hwmon: (asus-ec-sensors) add missing comma in board name list. 2022-06-15 08:14:38 -07:00
hwspinlock
hwtracing
i2c i2c: mediatek: Fix an error handling path in mtk_i2c_probe() 2022-06-14 22:11:54 +02:00
i3c i3c: master: svc: fix returnvar.cocci warning 2022-05-17 22:34:42 +02:00
idle cpuidle,intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE 2022-06-08 18:05:45 +02:00
iio Bitmap patches for 5.19-rc1 2022-06-04 14:04:27 -07:00
infiniband v5.19 pull request 2022-05-26 21:08:40 -07:00
input Input updates for v5.19-rc1 2022-06-07 15:00:29 -07:00
interconnect Char / Misc / Other smaller driver subsystem updates for 5.19-rc1 2022-06-03 11:36:34 -07:00
iommu IOMMU Updates for Linux v5.19 2022-05-31 09:56:54 -07:00
ipack
irqchip irqchip/loongson-liointc: Use architecture register to get coreid 2022-06-10 08:57:19 +01:00
isdn
leds ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
macintosh macintosh: via-pmu and via-cuda need RTC_LIB 2022-05-22 15:58:30 +10:00
mailbox mailbox: qcom-ipcc: Fix -Wunused-function with CONFIG_PM_SLEEP=n 2022-05-24 08:08:24 -05:00
mcb
md block-5.19-2022-06-16 2022-06-17 11:22:58 -07:00
media USB / Thunderbolt changes for 5.19-rc1 2022-06-03 11:17:49 -07:00
memory More power management updates for 5.19-rc1 2022-05-30 11:37:26 -07:00
memstick
message
mfd ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
misc Char/Misc driver fixes for 5.19-rc3 - take 2 2022-06-19 09:37:29 -05:00
mmc MMC core: 2022-06-07 14:24:30 -07:00
most
mtd This pull request contains fixes for JFFS2, UBI and UBIFS 2022-06-03 14:42:24 -07:00
mux
net net: axienet: add missing error return code in axienet_probe() 2022-06-16 11:08:38 -07:00
nfc nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred 2022-06-08 10:18:10 -07:00
ntb
nubus
nvdimm cxl for 5.19 2022-05-27 21:24:19 -07:00
nvme nvme-pci: disable write zeros support on UMIC and Samsung SSDs 2022-06-13 19:56:57 +02:00
nvmem
of drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
opp OPP updates for 5.19-rc1 2022-05-25 15:02:26 +02:00
parisc
parport
pci PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
pcmcia ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
peci
perf arm64 updates for 5.19: 2022-05-23 21:06:11 -07:00
phy phy-for-5.19 2022-05-19 16:56:17 +02:00
pinctrl Pin control bulk changes for the v5.19 series: 2022-05-28 11:15:54 -07:00
platform platform-drivers-x86 for v5.19-2 2022-06-12 11:33:42 -07:00
pnp
power Char / Misc / Other smaller driver subsystem updates for 5.19-rc1 2022-06-03 11:36:34 -07:00
powercap Merge branches 'pm-em' and 'pm-cpuidle' 2022-05-23 19:18:51 +02:00
pps
ps3
ptp ptp: ptp_clockmatrix: fix is_single_shot 2022-05-25 21:51:32 -07:00
pwm pwm: pwm-cros-ec: Add channel type support 2022-05-20 16:40:01 +02:00
rapidio
ras
regulator Merge back reboot/poweroff notifiers rework for 5.19-rc1. 2022-05-25 14:38:29 +02:00
remoteproc
reset
rpmsg Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
rtc ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
s390 Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
sbus
scsi scsi: pmcraid: Fix missing resource cleanup in error case 2022-06-07 22:05:14 -04:00
sh
siox
slimbus Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
soc Char / Misc / Other smaller driver subsystem updates for 5.19-rc1 2022-06-03 11:36:34 -07:00
soundwire
spi Driver core changes for 5.19-rc1 2022-06-03 11:48:47 -07:00
spmi
ssb
staging staging: rtl8723bs: Allocate full pwep structure 2022-06-10 09:10:16 +02:00
target blk-mq: remove the done argument to blk_execute_rq_nowait 2022-05-28 06:15:27 -06:00
tc
tee Fix a compiler warning in OP-TEE driver 2022-05-30 14:44:27 +02:00
thermal Additional thermal control update for 5.19-rc1 2022-05-30 11:34:13 -07:00
thunderbolt USB / Thunderbolt changes for 5.19-rc1 2022-06-03 11:17:49 -07:00
tty serial: 8250: Store to lsr_save_flags after lsr read 2022-06-10 13:52:19 +02:00
ufs SCSI misc on 20220604 2022-06-05 09:25:12 -07:00
uio
usb usb: gadget: f_fs: change ep->ep safe in ffs_epfile_io() 2022-06-10 14:45:38 +02:00
vdpa vduse: Fix NULL pointer dereference on sysfs access 2022-06-08 08:56:03 -04:00
vfio VFIO updates for v5.19-rc1 2022-06-01 13:49:15 -07:00
vhost vdpa: make get_vq_group and set_group_asid optional 2022-06-09 00:26:35 -04:00
video parisc architecture fixes & updates for kernel v5.19-rc1 2022-06-04 13:50:23 -07:00
virt Char / Misc / Other smaller driver subsystem updates for 5.19-rc1 2022-06-03 11:36:34 -07:00
virtio virtio,vdpa: fixes 2022-06-11 16:32:47 -07:00
vlynq
vme
w1
watchdog watchdog: gxp: Add missing MODULE_LICENSE 2022-06-09 12:20:34 +02:00
xen xen: unexport __init-annotated xen_xlate_map_ballooned_pages() 2022-06-07 08:11:35 +02:00
zorro
Kconfig SCSI misc on 20220604 2022-06-05 09:25:12 -07:00
Makefile SCSI misc on 20220604 2022-06-05 09:25:12 -07:00