Use scope-based resource management __free() macro to drop the open coded
put_device() in cxl_endpoint_port_probe().
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170449247973.3779673.15088722836135359275.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Use scope-based resource management __free() macro to drop the open coded
put_device() in cxl_find_nvdimm_bridge().
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170449247353.3779673.5963704495491343135.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
cxl_port_perf_data_calculate() calls find_cxl_root() and does not
dereference the 'struct device' in the cxl_root->port. find_cxl_root()
calls get_device() and takes a reference on the port 'struct device'
member. Use the __free() macro to ensure the dereference happens.
Fixes: 7a4f148dd8 ("cxl: Compute the entire CXL path latency and bandwidth data")
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170449246681.3779673.2288926019977963333.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Commit 790815902e ("cxl: Add support for _DSM Function for retrieving QTG ID")
introduced 'struct cxl_root', however all usages have been worked
indirectly through cxl_port. Refactor code such as find_cxl_root()
function to use 'struct cxl_root' directly.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170449246044.3779673.13035770941393418591.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add a helper function put_cxl_root() to maintain symmetry for
find_cxl_root() function instead of relying on open coding of the
put_device() in order to dereference the 'struct device' that happens via
get_device() in find_cxl_root().
Suggested-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Robert Richter <rrichter@amd.com>
Link: https://lore.kernel.org/r/170449245417.3779673.4566146351673989387.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
cxl_port_setup_targets() modifies the ->targets[] array of a switch
decoder. target_list_show() expects to be able to emit a coherent
snapshot of that array by "holding" ->target_lock for read. The
target_lock is held for write during initialization of the ->targets[]
array, but it is not held for write during cxl_port_setup_targets().
The ->target_lock() predates the introduction of @cxl_region_rwsem. That
semaphore protects changes to host-physical-address (HPA) decode which
is precisely what writes to a switch decoder's target list affects.
Replace ->target_lock with @cxl_region_rwsem.
Now the side-effect of snapshotting a unstable view of a decoder's
target list is likely benign so the Fixes: tag is presumptive.
Fixes: 27b3f8d138 ("cxl/region: Program target lists")
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The decoder_populate_targets() helper walks all of the targets in a port
and makes sure they can be looked up in @target_map. Where @target_map
is a lookup table from target position to target id (corresponding to a
cxl_dport instance). However @target_map is only responsible for
conveying the active dport instances as indicated by interleave_ways.
When nr_targets > interleave_ways it results in
decoder_populate_targets() walking off the end of the valid entries in
@target_map. Given target_map is initialized to 0 it results in the
dport lookup failing if position 0 is not mapped to a dport with an id
of 0:
cxl_port port3: Failed to populate active decoder targets
cxl_port port3: Failed to add decoder
cxl_port port3: Failed to add decoder3.0
cxl_bus_probe: cxl_port port3: probe: -6
This bug also highlights that when the decoder's ->targets[] array is
written in cxl_port_setup_targets() it is missing a hold of the
targets_lock to synchronize against sysfs readers of the target list. A
fix for that is saved for a later patch.
Fixes: a5c2580216 ("cxl/bus: Populate the target list at decoder create")
Cc: <stable@vger.kernel.org>
Signed-off-by: Huang, Ying <ying.huang@intel.com>
[djbw: rewrite the changelog, find the Fixes: tag]
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
CXL supports x3, x6 and x12 - not x9.
Fixes: 80d10a6cee ("cxl/region: Add interleave geometry attributes")
Signed-off-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Link: https://lore.kernel.org/r/169904271254.204936.8580772404462743630.stgit@ubuntu
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Use "%pap" to print a resource_size_t (phys_addr_t derived type)
to prevent build warnings on 32-bit arches (seen on i386 and
riscv-32).
../drivers/cxl/core/region.c: In function 'alloc_hpa':
../drivers/cxl/core/region.c:556:25: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 5 has type 'resource_size_t' {aka 'unsigned int'} [-Wformat=]
556 | "HPA allocation error (%ld) for size:%#llx in %s %pr\n",
Fixes: 7984d22f13 ("cxl/region: Add dev_dbg() detail on failure to allocate HPA space")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Fan Ni <fan.ni@samsung.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Alison Schofield <alison.schofield@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <linux-cxl@vger.kernel.org>
Link: https://lore.kernel.org/r/20240102173917.19718-1-rdunlap@infradead.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
When the region driver fails while allocating HPA space for a
new region it can be because the parent resource, the CXL Window,
has no more available space.
In that case, the debug user sees this message:
cxl_core:alloc_hpa:555: cxl region2: failed to allocate HPA: -34
Expand the message like this:
cxl_core:alloc_hpa:555: cxl region8: HPA allocation error (-34) for size:0x20000000 in CXL Window 0 [mem 0xf010000000-0xf04fffffff flags 0x200]
Now the debug user can examine /proc/iomem and consider actions
like removing other allocations in that space or reducing the
size of their region request.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Link: https://lore.kernel.org/r/20231223004740.1401858-1-alison.schofield@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
- Fix a secondary CPUs enumeration regression caused by creative
MADT APIC table entries on certain systems.
- Fix a race in the NOP-patcher that can spuriously trigger crashes
on bootup.
- Fix a bootup failure regression caused by the parallel bringup
code, caused by firmware inconsistency between the APIC
initialization states of the boot and secondary CPUs, on certain
systems.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix a secondary CPUs enumeration regression caused by creative MADT
APIC table entries on certain systems.
- Fix a race in the NOP-patcher that can spuriously trigger crashes on
bootup.
- Fix a bootup failure regression caused by the parallel bringup code,
caused by firmware inconsistency between the APIC initialization
states of the boot and secondary CPUs, on certain systems.
* tag 'x86-urgent-2023-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/acpi: Handle bogus MADT APIC tables gracefully
x86/alternatives: Disable interrupts and sync when optimizing NOPs in place
x86/alternatives: Sync core before enabling interrupts
x86/smpboot/64: Handle X2APIC BIOS inconsistency gracefully
Four small fixes, three in drivers with the core one adding a batch
indicator (for drivers which use it) to the error handler.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four small fixes, three in drivers with the core one adding a batch
indicator (for drivers which use it) to the error handler"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: core: Let the sq_lock protect sq_tail_slot access
scsi: ufs: qcom: Return ufs_qcom_clk_scale_*() errors in ufs_qcom_clk_scale_notify()
scsi: core: Always send batch on reset or error handling command
scsi: bnx2fc: Fix skb double free in bnx2fc_rcv()
Here are some small bugfixes and new device ids for USB and Thunderbolt
drivers for 6.7-rc7. Included in here are:
- new usb-serial device ids
- thunderbolt driver fixes
- typec driver fix
- usb-storage driver quirk added
- fotg210 driver fix
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt fixes from Greg KH:
"Here are some small bugfixes and new device ids for USB and
Thunderbolt drivers for 6.7-rc7. Included in here are:
- new usb-serial device ids
- thunderbolt driver fixes
- typec driver fix
- usb-storage driver quirk added
- fotg210 driver fix
All of these have been in linux-next with no reported issues"
* tag 'usb-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: option: add Quectel EG912Y module support
USB: serial: ftdi_sio: update Actisense PIDs constant names
usb: fotg210-hcd: delete an incorrect bounds test
usb-storage: Add quirk for incorrect WP on Kingston DT Ultimate 3.0 G3
usb: typec: ucsi: fix gpio-based orientation detection
net: usb: ax88179_178a: avoid failed operations when device is disconnected
USB: serial: option: add Quectel RM500Q R13 firmware support
USB: serial: option: add Foxconn T99W265 with new baseline
thunderbolt: Fix minimum allocated USB 3.x and PCIe bandwidth
thunderbolt: Fix memory leak in margining_port_remove()
Here are a small number of various driver fixes for 6.7-rc7 that
normally come through the char-misc tree, and one debugfs fix as well.
Included in here are:
- iio and hid sensor driver fixes for a number of small things
- interconnect driver fixes
- brcm_nvmem driver fixes
- debugfs fix for previous fix
- guard() definition in device.h so that many subsystems can start
using it for 6.8-rc1 (requested by Dan Williams to make future
merges easier.)
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver fixes from Greg KH:
"Here are a small number of various driver fixes for 6.7-rc7 that
normally come through the char-misc tree, and one debugfs fix as well.
Included in here are:
- iio and hid sensor driver fixes for a number of small things
- interconnect driver fixes
- brcm_nvmem driver fixes
- debugfs fix for previous fix
- guard() definition in device.h so that many subsystems can start
using it for 6.8-rc1 (requested by Dan Williams to make future
merges easier)
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
debugfs: initialize cancellations earlier
Revert "iio: hid-sensor-als: Add light color temperature support"
Revert "iio: hid-sensor-als: Add light chromaticity support"
nvmem: brcm_nvram: store a copy of NVRAM content
dt-bindings: nvmem: mxs-ocotp: Document fsl,ocotp
driver core: Add a guard() definition for the device_lock()
interconnect: qcom: icc-rpm: Fix peak rate calculation
iio: adc: MCP3564: fix hardware identification logic
iio: adc: MCP3564: fix calib_bias and calib_scale range checks
iio: adc: meson: add separate config for axg SoC family
iio: adc: imx93: add four channels for imx93 adc
iio: adc: ti_am335x_adc: Fix return value check of tiadc_request_dma()
interconnect: qcom: sm8250: Enable sync_state
iio: triggered-buffer: prevent possible freeing of wrong buffer
iio: imu: inv_mpu6050: fix an error code problem in inv_mpu6050_read_raw
iio: imu: adis16475: use bit numbers in assign_bit()
iio: imu: adis16475: add spi_device_id table
iio: tmag5273: fix temperature offset
interconnect: Treat xlate() returning NULL node as an error
iio: common: ms_sensors: ms_sensors_i2c: fix humidity conversion time table
...
- a quirk to AT keyboard driver to skip issuing "GET ID" command when
8042 is in translated mode and the device is a laptop/portable,
because the "GET ID" command makes a bunch of recent laptops unhappy
- a quirk to i8042 to disable multiplexed mode on Acer P459-G2-M which
causes issues on resume
- psmouse will activate native RMI4 protocol support for touchpad on
ThinkPad L14 G1
- addition of Razer Wolverine V2 ID to xpad gamepad driver
- mapping for airplane mode button in soc_button_array driver for TUXEDO
laptops
- improved error handling in ipaq-micro-keys driver
- amimouse being prepared for platform remove callback returning void
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Merge tag 'input-for-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- a quirk to AT keyboard driver to skip issuing "GET ID" command when
8042 is in translated mode and the device is a laptop/portable,
because the "GET ID" command makes a bunch of recent laptops unhappy
- a quirk to i8042 to disable multiplexed mode on Acer P459-G2-M which
causes issues on resume
- psmouse will activate native RMI4 protocol support for touchpad on
ThinkPad L14 G1
- addition of Razer Wolverine V2 ID to xpad gamepad driver
- mapping for airplane mode button in soc_button_array driver for
TUXEDO laptops
- improved error handling in ipaq-micro-keys driver
- amimouse being prepared for platform remove callback returning void
* tag 'input-for-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: soc_button_array - add mapping for airplane mode button
Input: xpad - add Razer Wolverine V2 support
Input: ipaq-micro-keys - add error handling for devm_kmemdup
Input: amimouse - convert to platform remove callback returning void
Input: i8042 - add nomux quirk for Acer P459-G2-M
Input: atkbd - skip ATKBD_CMD_GETID in translated mode
Input: psmouse - enable Synaptics InterTouch for ThinkPad L14 G1
This add a mapping for the airplane mode button on the TUXEDO Pulse Gen3.
While it is physically a key it behaves more like a switch, sending a key
down on first press and a key up on 2nd press. Therefor the switch event
is used here. Besides this behaviour it uses the HID usage-id 0xc6
(Wireless Radio Button) and not 0xc8 (Wireless Radio Slider Switch), but
since neither 0xc6 nor 0xc8 are currently implemented at all in
soc_button_array this not to standard behaviour is not put behind a quirk
for the moment.
Signed-off-by: Christoffer Sandberg <cs@tuxedo.de>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Link: https://lore.kernel.org/r/20231215171718.80229-1-wse@tuxedocomputers.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'block-6.7-2023-12-22' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"Just an NVMe pull request this time, with a fix for bad sleeping
context, and a revert of a patch that caused some trouble"
* tag 'block-6.7-2023-12-22' of git://git.kernel.dk/linux:
nvme-pci: fix sleeping function called from interrupt context
Revert "nvme-fc: fix race between error recovery and creating association"
- Fix a race condition in updating external interrupt for
trap-n-emulated IMSIC swfile
- Fix print_reg defaults in get-reg-list selftest
ARM:
- Ensure a vCPU's redistributor is unregistered from the MMIO bus
if vCPU creation fails
- Fix building KVM selftests for arm64 from the top-level Makefile
x86:
- Fix breakage for SEV-ES guests that use XSAVES.
Selftests:
- Fix bad use of strcat(), by not using strcat() at all
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"RISC-V:
- Fix a race condition in updating external interrupt for
trap-n-emulated IMSIC swfile
- Fix print_reg defaults in get-reg-list selftest
ARM:
- Ensure a vCPU's redistributor is unregistered from the MMIO bus if
vCPU creation fails
- Fix building KVM selftests for arm64 from the top-level Makefile
x86:
- Fix breakage for SEV-ES guests that use XSAVES
Selftests:
- Fix bad use of strcat(), by not using strcat() at all"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: SEV: Do not intercept accesses to MSR_IA32_XSS for SEV-ES guests
KVM: selftests: Fix dynamic generation of configuration names
RISCV: KVM: update external interrupt atomically for IMSIC swfile
KVM: riscv: selftests: Fix get-reg-list print_reg defaults
KVM: selftests: Ensure sysreg-defs.h is generated at the expected path
KVM: Convert comment into an assertion in kvm_io_bus_register_dev()
KVM: arm64: vgic: Ensure that slots_lock is held in vgic_register_all_redist_iodevs()
KVM: arm64: vgic: Force vcpu vgic teardown on vcpu destroy
KVM: arm64: vgic: Add a non-locking primitive for kvm_vgic_vcpu_destroy()
KVM: arm64: vgic: Simplify kvm_vgic_destroy()
Add a check to make sure the qos_class for the device will match one of
the root decoders qos_class. If no match is found, then the qos_class for
the device is set to invalid. Also add a check to ensure that the device's
host bridge matches to one of the root decoder's downstream targets.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319626313.2212653.9021004640856081917.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Export qos_class sysfs attributes for the CXL memory device. The QoS clas
should show up as /sys/bus/cxl/devices/memX/ram/qos_class for the volatile
partition and /sys/bus/cxl/devices/memX/pmem/qos_class for the persistent
partition. The QTG ID is retrieved via _DSM after supplying the
calculated bandwidth and latency for the entire CXL path from device to
the CPU. This ID is used to match up to the root decoder QoS class to
determine which CFMWS the memory range of a hotplugged CXL mem device
should be assigned under.
While there may be multiple DSMAS exported by the device CDAT, the driver
will only expose the first QTG ID per partition in sysfs for now. In the
future when multiple QTG IDs are necessary, they can be exposed. [1]
[1]: https://lore.kernel.org/linux-cxl/167571650007.587790.10040913293130712882.stgit@djiang5-mobl3.local/T/#md2a47b1ead3e1ba08f50eab29a4af1aed1d215ab
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319625698.2212653.17544381274847420961.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Once the QTG ID _DSM is executed successfully, the QTG ID is retrieved from
the return package. Create a list of entries in the cxl_memdev context and
store the QTG ID as qos_class token and the associated DPA range. This
information can be exposed to user space via sysfs in order to help region
setup for hot-plugged CXL memory devices.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319625109.2212653.11872111896220384056.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
CXL Memory Device SW Guide [1] rev1.0 2.11.2 provides instruction on how to
calculate latency and bandwidth for CXL memory device. Calculate minimum
bandwidth and total latency for the path from the CXL device to the root
port. The QTG id is retrieved by providing the performance data as input
and calling the root port callback ->get_qos_class(). The retrieved id is
stored with the cxl_port of the CXL device.
For example for a device that is directly attached to a host bus:
Total Latency = Device Latency (from CDAT) + Dev to Host Bus (HB) Link
Latency + Generic Port Latency
Min Bandwidth = Min bandwidth for link bandwidth between HB
and CXL device, device CDAT bandwidth, and Generic Port
Bandwidth
For a device that has a switch in between host bus and CXL device:
Total Latency = Device (CDAT) Latency + Dev to Switch Link Latency +
Switch (CDAT) Latency + Switch to HB Link Latency +
Generic Port Latency
Min Bandwidth = Min bandwidth for link bandwidth between CXL device
to CXL switch, CXL device CDAT bandwidth, CXL switch CDAT
bandwidth, CXL switch to HB bandwidth, and Generic Port
Bandwidth.
[1]: https://cdrdv2-public.intel.com/643805/643805_CXL%20Memory%20Device%20SW%20Guide_Rev1p0.pdf
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319624458.2212653.13252496567443656371.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The CDAT information from the switch, Switch Scoped Latency and Bandwidth
Information Structure (SSLBIS), is parsed and stored under a cxl_dport
based on the correlated downstream port id from the SSLBIS entry. Walk
the entire CXL port paths and collect all the performance data. Also
pick up the link latency number that's stored under the dports. The
entire path PCIe bandwidth can be retrieved using the
pcie_bandwidth_available() call.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319623824.2212653.10302079766473698427.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Each CXL host bridge is represented by an ACPI0016 device. A generic port
device handle that is an ACPI device is represented by a string of
ACPI0016 device HID and UID. Create a device handle from the ACPI device
and retrieve the access coordinates from the stored memory targets. The
access coordinates are stored under the cxl_dport that is associated with
the CXL host bridge.
The access coordinates struct is dynamically allocated under cxl_dport in
order for code later on to detect whether the data exists or not.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319623196.2212653.17916695743464172534.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
- Ensure a vCPU's redistributor is unregistered from the MMIO bus
if vCPU creation fails
- Fix building KVM selftests for arm64 from the top-level Makefile
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Merge tag 'kvmarm-fixes-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/arm64 fixes for 6.7, part #2
- Ensure a vCPU's redistributor is unregistered from the MMIO bus
if vCPU creation fails
- Fix building KVM selftests for arm64 from the top-level Makefile
The latency is calculated by dividing the flit size over the bandwidth. Add
support to retrieve the flit size for the CXL switch device and calculate
the latency of the PCIe link. Cache the latency number with cxl_dport.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319621931.2212653.6800240203604822886.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
CXL spec v3.0 9.17.3 CXL Root Device Specific Methods (_DSM)
Add support to retrieve QTG ID via ACPI _DSM call. The _DSM call requires
an input of an ACPI package with 4 dwords (read latency, write latency,
read bandwidth, write bandwidth). The call returns a package with 1 WORD
that provides the max supported QTG ID and a package that may contain 0 or
more WORDs as the recommended QTG IDs in the recommended order.
Create a cxl_root container for the root cxl_port and provide a callback
->get_qos_class() in order to retrieve the QoS class. For the ACPI case,
the _DSM helper is used to retrieve the QTG ID and returned. A
devm_cxl_add_root() function is added for root port setup and registration
of the cxl_root callback operation(s).
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/170319621294.2212653.1649682083061569256.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Provide a callback to parse the Switched Scoped Latency and Bandwidth
Information Structure (SSLBIS) in the CDAT structures. The SSLBIS
contains the bandwidth and latency information that's tied to the
CXL switch that the data table has been read from. The extracted
values are stored to the cxl_dport correlated by the port_id
depending on the SSLBIS entry.
Coherent Device Attribute Table 1.03 2.1 Switched Scoped Latency
and Bandwidth Information Structure (DSLBIS)
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319620635.2212653.5194389158785365150.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Provide a callback to parse the Device Scoped Latency and Bandwidth
Information Structure (DSLBIS) in the CDAT structures. The DSLBIS
contains the bandwidth and latency information that's tied to a DSMAS
handle. The driver will retrieve the read and write latency and
bandwidth associated with the DSMAS which is tied to a DPA range.
Coherent Device Attribute Table 1.03 2.1 Device Scoped Latency and
Bandwidth Information Structure (DSLBIS)
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319620005.2212653.7475488478229720542.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Provide a callback function to the CDAT parser in order to parse the
Device Scoped Memory Affinity Structure (DSMAS). Each DSMAS structure
contains the DPA range and its associated attributes in each entry. See
the CDAT specification for details. The device handle and the DPA range
is saved and to be associated with the DSLBIS locality data when the
DSLBIS entries are parsed. The xarray is a local variable. When the
total path performance data is calculated and storred this xarray can be
discarded.
Coherent Device Attribute Table 1.03 2.1 Device Scoped memory Affinity
Structure (DSMAS)
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319619355.2212653.2675953129671561293.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add helper to retrieve the performance attributes based on the device
handle. The helper function is exported so the CXL driver can use that
to acquire the performance data between the CPU and the CXL host bridge.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319618721.2212653.5552947472849081786.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add generic port support for the parsing of HMAT system locality sub-table.
The attributes will be added to the third array member of the access
coordinates in order to not mix with the existing memory attributes. It
only provides the system locality attributes from initiator to the
generic port targets and is missing the rest of the data to the actual
memory device.
The complete attributes will be updated when a memory device is
attached and the system locality information is calculated end to end.
Through hmat_update_target_attrs(), the best performance attributes will
be setup in target->coord.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319618135.2212653.13778540010384821833.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Refactor hmat_parse_locality() to break up the deep nesting of the
function.
Suggested-by: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319617537.2212653.10625501075519862509.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Add SRAT parsing for the HMAT init in order to collect the device handle
from the Generic Port Affinity Structure. The device handle will serve as
the key to search for target data.
Consolidate the common code with alloc_memory_target() in a helper function
alloc_target().
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319616951.2212653.14862375982250406464.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Create enums to provide named indexing for the access coordinate array.
This is in preparation for adding generic port support which will add a
third index in the array to keep the generic port attributes separate from
the memory attributes.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319616332.2212653.3872789279950567889.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams suggested changing the struct 'node_hmem_attrs' to
'access_coordinates' [1]. The struct is a container of r/w-latency and
r/w-bandwidth numbers. Moving forward, this container will also be used by
CXL to store the performance characteristics of each link hop in
the PCIE/CXL topology. So, where node_hmem_attrs is just the access
parameters of a memory-node, access_coordinates applies more broadly
to hardware topology characteristics. The observation is that seemed like
an exercise in having the application identify "where" it falls on a
spectrum of bandwidth and latency needs. For the tuple of
read/write-latency and read/write-bandwidth, "coordinates" is not a perfect
fit. Sometimes it is just conveying values in isolation and not a
"location" relative to other performance points, but in the end this data
is used to identify the performance operation point of a given memory-node.
[2]
Link: http://lore.kernel.org/r/64471313421f7_1b66294d5@dwillia2-xfh.jf.intel.com.notmuch/
Link: https://lore.kernel.org/linux-cxl/645e6215ee0de_1e6f2945e@dwillia2-xfh.jf.intel.com.notmuch/
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/170319615734.2212653.15319394025985499185.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The CDAT table is very similar to ACPI tables when it comes to sub-table
and entry structures. The helper functions can be also used to parse the
CDAT table. Add support to the helper functions to deal with an external
CDAT table, and also handle the endieness since CDAT can be processed by a
BE host. Export a function cdat_table_parse() for CXL driver to parse
a CDAT table.
In order to minimize ACPICA code changes, __force is being utilized to deal
with the case of a big endian (BE) host parsing a CDAT. All CDAT data
structure variables are being force casted to __leX as appropriate.
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/170319615131.2212653.10932785667981494238.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Apparently there were so many kids wishing bug fixes that made Santa
busy; here we have lots of fixes although it's a bit late.
But all changes are device-specific, hence it should be relatively
safe to apply.
Most of changes are for Cirrus codecs (for both ASoC and HD-audio),
while the remaining are fixes for TI codecs, HD-audio and USB-audio
quirks.
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Merge tag 'sound-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Apparently there were so many kids wishing bug fixes that made Santa
busy; here we have lots of fixes although it's a bit late. But all
changes are device-specific, hence it should be relatively safe to
apply.
Most of changes are for Cirrus codecs (for both ASoC and HD-audio),
while the remaining are fixes for TI codecs, HD-audio and USB-audio
quirks"
* tag 'sound-6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (24 commits)
ALSA: hda: cs35l41: Only add SPI CS GPIO if SPI is enabled in kernel
ALSA: hda: cs35l41: Do not allow uninitialised variables to be freed
ASoC: fsl_sai: Fix channel swap issue on i.MX8MP
ASoC: hdmi-codec: fix missing report for jack initial status
ALSA: hda/realtek: Add quirks for ASUS Zenbook 2023 Models
ALSA: hda: cs35l41: Support additional ASUS Zenbook 2023 Models
ALSA: hda/realtek: Add quirks for ASUS Zenbook 2022 Models
ALSA: hda: cs35l41: Support additional ASUS Zenbook 2022 Models
ALSA: hda/realtek: Add quirks for ASUS ROG 2023 models
ALSA: hda: cs35l41: Support additional ASUS ROG 2023 models
ALSA: hda: cs35l41: Add config table to support many laptops without _DSD
ASoC: Intel: bytcr_rt5640: Add new swapped-speakers quirk
ASoC: Intel: bytcr_rt5640: Add quirk for the Medion Lifetab S10346
kselftest: alsa: fixed a print formatting warning
ALSA: usb-audio: Increase delay in MOTU M quirk
ASoC: tas2781: check the validity of prm_no/cfg_no
ALSA: hda/tas2781: select program 0, conf 0 by default
ALSA: hda/realtek: Add quirk for ASUS ROG GV302XA
ASoC: cs42l43: Don't enable bias sense during type detect
ASoC: Intel: soc-acpi-intel-mtl-match: Change CS35L56 prefixes to AMPn
...
- add protection against GPIO device removal to an overlooked ioctl()
- synchronize the interrupt mask register manually in gpio-dwapb
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Merge tag 'gpio-fixes-for-v6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"Here's another round of fixes from the GPIO subsystem for this release
cycle.
There's one commit adding synchronization to an ioctl() we overlooked
previously and another synchronization changeset for one of the
drivers:
- add protection against GPIO device removal to an overlooked ioctl()
- synchronize the interrupt mask register manually in gpio-dwapb"
* tag 'gpio-fixes-for-v6.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: dwapb: mask/unmask IRQ when disable/enale it
gpiolib: cdev: add gpio_device locking wrapper around gpio_ioctl()
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Merge tag 'for-linus-6.7a-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"A single patch fixing a build issue for x86 32-bit configurations with
CONFIG_XEN, which was introduced in the 6.7 development cycle"
* tag 'for-linus-6.7a-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: add CPU dependencies for 32-bit build
amdgpu:
- DCN 3.5 fixes
- DCN 3.2 SubVP fix
- GPUVM fix
amdkfd:
- SVM fix for APUs
i915:
- Fix state readout and check for DSC and bigjoiner combo
- Fix a potential integer overflow
- Reject async flips with bigjoiner
- Fix MTL HDMI/DP PLL clock selection
- Fix various issues by disabling pipe DMC events
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Merge tag 'drm-fixes-2023-12-22' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Pretty quiet for this week, just i915 and amdgpu fixes,
I think the misc tree got lost this week, but didn't seem to have too
much in it, so it can wait. I've also got a bunch of nouveau GSP fixes
sailing around that'll probably land next time as well.
amdgpu:
- DCN 3.5 fixes
- DCN 3.2 SubVP fix
- GPUVM fix
amdkfd:
- SVM fix for APUs
i915:
- Fix state readout and check for DSC and bigjoiner combo
- Fix a potential integer overflow
- Reject async flips with bigjoiner
- Fix MTL HDMI/DP PLL clock selection
- Fix various issues by disabling pipe DMC events"
* tag 'drm-fixes-2023-12-22' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: re-create idle bo's PTE during VM state machine reset
drm/amd/display: dereference variable before checking for zero
drm/amd/display: get dprefclk ss info from integration info table
drm/amd/display: Add case for dcn35 to support usb4 dmub hpd event
drm/amd/display: disable FPO and SubVP for older DMUB versions on DCN32x
drm/amdkfd: svm range always mapped flag not working on APU
drm/amd/display: Revert " drm/amd/display: Use channel_width = 2 for vram table 3.0"
drm/i915/dmc: Don't enable any pipe DMC events
drm/i915/mtl: Fix HDMI/DP PLL clock selection
drm/i915: Reject async flips with bigjoiner
drm/i915/hwmon: Fix static analysis tool reported issues
drm/i915/display: Get bigjoiner config before dsc config during readout
