kernel/linux.git/drivers/net/ipa/ipa_interrupt.h, branch v6.1.168

net: ipa: disable ipa interrupt during suspend

2023-02-01T07:34:22+00:00

[ Upstream commit 9ec9b2a30853ba843b70ea16f196e5fe3327be5f ] The IPA interrupt can fire when pm_runtime is disabled due to it racing with the PM suspend/resume code. This causes a splat in the interrupt handler when it tries to call pm_runtime_get(). Explicitly disable the interrupt in our ->suspend callback, and re-enable it in ->resume to avoid this. If there is an interrupt pending it will be handled after resuming. The interrupt is a wake_irq, as a result even when disabled if it fires it will cause the system to wake from suspend as well as cancel any suspend transition that may be in progress. If there is an interrupt pending, the ipa_isr_thread handler will be called after resuming. Fixes: 1aac309d3207 ("net: ipa: use autosuspend") Signed-off-by: Caleb Connolly Reviewed-by: Alex Elder Link: https://lore.kernel.org/r/20230115175925.465918-1-caleb.connolly@linaro.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: ipa: update copyrights

2022-10-03T23:49:20+00:00

Some source files state copyright dates that are earlier than the last modification of the file. Change the copyright year to 2022 in all such cases. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20220930224549.3503434-1-elder@linaro.org Signed-off-by: Jakub Kicinski

net: ipa: set up IPA interrupts earlier

2021-07-26T22:09:18+00:00

Initialization of the IPA driver has several phases: - "init" phase can be done without any access to IPA hardware - "config" phase requires the IPA hardware to be clocked - "setup" phase requires the GSI layer to be functional Currently, initialization for the IPA interrupt handling code occurs in the setup phase. It requires access to the IPA hardware but does not need GSI, so it can be moved to the config phase instead. Call the interrupt configuration function early in ipa_config() rather than from ipa_setup(). Rename ipa_interrupt_setup() to be ipa_interrupt_config(), and ipa_interrupt_teardown() to be ipa_interupt_deconfig(), so their names properly indicate when they get called. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: fix all kernel-doc warnings

2021-03-29T01:12:03+00:00

Fix all warnings produced when running: scripts/kernel-doc -none drivers/net/ipa/*.[ch] Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: move definition of enum ipa_irq_id

2020-11-18T23:53:49+00:00

Move the definition of the ipa_irq_id enumerated type out of "ipa_interrupt.h" and into "ipa_reg.h", and flesh out its set of defined values. Each interrupt id indicates a particular type of IPA interrupt that can be signaled. Their numeric values define bit positions in the IPA_IRQ_* registers, so should their definitions should accompany the definition of those register offsets. Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: define enumerated types consistently

2020-11-18T23:53:48+00:00

Consistently define numeric values for enumerated type members using hexidecimal (rather than decimal) format values. Align the values assigned in the same column in each file. Only assign values where they really matter, for example don't assign IPA_ENDPOINT_AP_MODEM_TX the value 0. Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: fix kerneldoc comments

2020-07-14T00:11:53+00:00

This commit affects comments (and in one case, whitespace) only. Throughout the IPA code, return statements are documented using "@Return:", whereas they should use "Return:" instead. Fix these mistakes. In function definitions, some parameters are missing their comment to describe them. And in structure definitions, some fields are missing their comment to describe them. Add these missing descriptions. Some arguments changed name and type along the way, but their descriptions were not updated (an endpoint pointer is now used in many places that previously used an endpoint ID). Fix these incorrect parameter descriptions. In the description for the ipa_clock structure, one field had a semicolon instead of a colon in its description. Fix this. Add a missing function description for ipa_gsi_endpoint_data_empty(). All of these issues were identified when building with "W=1". Signed-off-by: Alex Elder Signed-off-by: David S. Miller

soc: qcom: ipa: clocking, interrupts, and memory

2020-03-09T05:07:09+00:00

This patch incorporates three source files (and their headers). They're grouped into one patch mainly for the purpose of making the number and size of patches in this series somewhat reasonable. - "ipa_clock.c" and "ipa_clock.h" implement clocking for the IPA device. The IPA has a single core clock managed by the common clock framework. In addition, the IPA has three buses whose bandwidth is managed by the Linux interconnect framework. At this time the core clock and all three buses are either on or off; we don't yet do any more fine-grained management than that. The core clock and interconnects are enabled and disabled as a unit, using a unified clock-like abstraction, ipa_clock_get()/ipa_clock_put(). - "ipa_interrupt.c" and "ipa_interrupt.h" implement IPA interrupts. There are two hardware IRQs used by the IPA driver (the other is the GSI interrupt, described in a separate patch). Several types of interrupt are handled by the IPA IRQ handler; these are not part of data/fast path. - The IPA has a region of local memory that is accessible by the AP (and modem). Within that region are areas with certain defined purposes. "ipa_mem.c" and "ipa_mem.h" define those regions, and implement their initialization. Signed-off-by: Alex Elder Signed-off-by: David S. Miller