linux.git/drivers/net/ipa, branch v6.6.132

PM: runtime: Simplify pm_runtime_get_if_active() usage

2025-08-28T14:28:42+00:00

[ Upstream commit c0ef3df8dbaef51ee4cfd58a471adf2eaee6f6b3 ]

There are two ways to opportunistically increment a device's runtime PM
usage count, calling either pm_runtime_get_if_active() or
pm_runtime_get_if_in_use(). The former has an argument to tell whether to
ignore the usage count or not, and the latter simply calls the former with
ign_usage_count set to false. The other users that want to ignore the
usage_count will have to explicitly set that argument to true which is a
bit cumbersome.

To make this function more practical to use, remove the ign_usage_count
argument from the function. The main implementation is in a static
function called pm_runtime_get_conditional() and implementations of
pm_runtime_get_if_active() and pm_runtime_get_if_in_use() are moved to
runtime.c.

Signed-off-by: Sakari Ailus 
Reviewed-by: Alex Elder 
Reviewed-by: Laurent Pinchart 
Acked-by: Takashi Iwai  # sound/
Reviewed-by: Jacek Lawrynowicz  # drivers/accel/ivpu/
Acked-by: Rodrigo Vivi  # drivers/gpu/drm/i915/
Reviewed-by: Rodrigo Vivi 
Acked-by: Bjorn Helgaas  # drivers/pci/
Signed-off-by: Rafael J. Wysocki 
[ Removed changes to code that didn't exist in older trees ]
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

net: ipa: add IPA v5.1 and v5.5 to ipa_version_string()

2025-08-15T10:09:02+00:00

[ Upstream commit f2aa00e4f65efcf25ff6bc8198e21f031e7b9b1b ]

Handle the case for v5.1 and v5.5 instead of returning "0.0".

Also reword the comment below since I don't see any evidence of such a
check happening, and - since 5.5 has been missing - can happen.

Fixes: 3aac8ec1c028 ("net: ipa: add some new IPA versions")
Signed-off-by: Luca Weiss 
Reviewed-by: Dawid Osuchowski 
Reviewed-by: Alex Elder 
Link: https://patch.msgid.link/20250728-ipa-5-1-5-5-version_string-v1-1-d7a5623d7ece@fairphone.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: ipa: Enable checksum for IPA_ENDPOINT_AP_MODEM_{RX,TX} for v4.7

2025-03-13T11:58:31+00:00

[ Upstream commit 934e69669e32eb653234898424ae007bae2f636e ]

Enable the checksum option for these two endpoints in order to allow
mobile data to actually work. Without this, no packets seem to make it
through the IPA.

Fixes: b310de784bac ("net: ipa: add IPA v4.7 support")
Signed-off-by: Luca Weiss 
Reviewed-by: Alex Elder 
Link: https://patch.msgid.link/20250227-ipa-v4-7-fixes-v1-3-a88dd8249d8a@fairphone.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: ipa: Fix QSB data for v4.7

2025-03-13T11:58:31+00:00

[ Upstream commit 6a2843aaf551d87beb92d774f7d5b8ae007fe774 ]

As per downstream reference, max_writes should be 12 and max_reads
should be 13.

Fixes: b310de784bac ("net: ipa: add IPA v4.7 support")
Signed-off-by: Luca Weiss 
Reviewed-by: Alex Elder 
Link: https://patch.msgid.link/20250227-ipa-v4-7-fixes-v1-2-a88dd8249d8a@fairphone.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: ipa: Fix v4.7 resource group names

2025-03-13T11:58:31+00:00

[ Upstream commit 5eb3dc1396aa7e315486b24df80df782912334b7 ]

In the downstream IPA driver there's only one group defined for source
and destination, and the destination group doesn't have a _DPL suffix.

Fixes: b310de784bac ("net: ipa: add IPA v4.7 support")
Signed-off-by: Luca Weiss 
Reviewed-by: Alex Elder 
Link: https://patch.msgid.link/20250227-ipa-v4-7-fixes-v1-1-a88dd8249d8a@fairphone.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: ipa: don't overrun IPA suspend interrupt registers

2024-03-01T12:35:08+00:00

[ Upstream commit d80f8e96d47d7374794a30fbed69be43f3388afc ]

In newer hardware, IPA supports more than 32 endpoints.  Some
registers--such as IPA interrupt registers--represent endpoints
as bits in a 4-byte register, and such registers are repeated as
needed to represent endpoints beyond the first 32.

In ipa_interrupt_suspend_clear_all(), we clear all pending IPA
suspend interrupts by reading all status register(s) and writing
corresponding registers to clear interrupt conditions.

Unfortunately the number of registers to read/write is calculated
incorrectly, and as a result we access *many* more registers than
intended.  This bug occurs only when the IPA hardware signals a
SUSPEND interrupt, which happens when a packet is received for an
endpoint (or its underlying GSI channel) that is suspended.  This
situation is difficult to reproduce, but possible.

Fix this by correctly computing the number of interrupt registers to
read and write.  This is the only place in the code where registers
that map endpoints or channels this way perform this calculation.

Fixes: f298ba785e2d ("net: ipa: add a parameter to suspend registers")
Signed-off-by: Alex Elder 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: ipa: fix one GSI register field width

2023-12-03T06:33:05+00:00

[ Upstream commit 37f0205538baf70beb57cdcb6c7d14aa13257926 ]

The width of the R_LENGTH field of the EV_CH_E_CNTXT_1 GSI register
is 24 bits (not 20 bits) starting with IPA v5.0.  Fix this.

Fixes: faf0678ec8a0 ("net: ipa: add IPA v5.0 GSI register definitions")
Signed-off-by: Alex Elder 
Link: https://lore.kernel.org/r/20231122231708.896632-1-elder@linaro.org
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

Merge tag 'soc-drivers-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2023-08-30T23:42:21+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "The main change this time was the introduction of the drivers/genpd
  subsystem that gets split out from drivers/soc to keep common
  functionality together.

  The SCMI driver subsystem gets an update to version 3.2 of the
  specification. There are also updates to memory, reset and other
  firmware drivers.

  On the soc driver side, the updates are mostly cleanups across a
  number of Arm platforms. On driver for loongarch adds power management
  for DT based systems, another driver is for HiSilicon's Arm server
  chips with their HCCS system health interface.

  The remaining updates for the most part add support for additional
  hardware in existing drivers or contain minor cleanups. Most of these
  are for the Qualcomm Snapdragon platform"

* tag 'soc-drivers-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (136 commits)
  bus: fsl-mc: Use common ranges functions
  soc: kunpeng_hccs: fix some sparse warnings about incorrect type
  soc: loongson2_pm: add power management support
  soc: dt-bindings: add loongson-2 pm
  soc: rockchip: grf: Fix SDMMC not working on RK3588 with bus-width > 1
  genpd: rockchip: Add PD_VO entry for rv1126
  bus: ti-sysc: Fix cast to enum warning
  soc: kunpeng_hccs: add MAILBOX dependency
  MAINTAINERS: remove OXNAS entry
  dt-bindings: interrupt-controller: arm,versatile-fpga-irq: mark oxnas compatible as deprecated
  irqchip: irq-versatile-fpga: remove obsolete oxnas compatible
  soc: qcom: aoss: Tidy up qmp_send() callers
  soc: qcom: aoss: Format string in qmp_send()
  soc: qcom: aoss: Move length requirements from caller
  soc: kunpeng_hccs: fix size_t format string
  soc: ti: k3-socinfo.c: Add JTAG ID for AM62PX
  dt-bindings: firmware: qcom: scm: Updating VMID list
  firmware: imx: scu-irq: support identifying SCU wakeup source from sysfs
  firmware: imx: scu-irq: enlarge the IMX_SC_IRQ_NUM_GROUP
  firmware: imx: scu-irq: add imx_scu_irq_get_status
  ...

soc: qcom: aoss: Tidy up qmp_send() callers

2023-08-14T02:27:32+00:00

With qmp_send() handling variable length messages and string formatting
he callers of qmp_send() can be cleaned up to not care about these
things.

Drop the QMP_MSG_LEN sized buffers and use the message formatting, as
appropriate.

Reviewed-by: Konrad Dybcio 
Signed-off-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811205839.727373-5-quic_bjorande@quicinc.com
Signed-off-by: Bjorn Andersson

soc: qcom: aoss: Move length requirements from caller

2023-08-14T02:26:48+00:00

The existing implementation of qmp_send() requires the caller to provide
a buffer which is of word-aligned. The underlying reason for this is
that message ram only supports word accesses, but pushing this
requirement onto the clients results in the same boiler plate code
sprinkled in every call site.

By using a temporary buffer in qmp_send() we can hide the underlying
hardware limitations from the clients and allow them to pass their
NUL-terminates C string directly.

Signed-off-by: Bjorn Andersson 
Reviewed-by: Konrad Dybcio 
Link: https://lore.kernel.org/r/20230811205839.727373-2-quic_bjorande@quicinc.com
Signed-off-by: Bjorn Andersson