- 22 Jul, 2023 4 commits
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Martin Kaiser authored
Use devm_clk_get_enabled in the ingenic-trng driver. We don't have to disable and unprepare the clock any more in error paths or in the remove function. Signed-off-by:
Martin Kaiser <martin@kaiser.cx> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Martin Kaiser authored
Don't assign a value to ret if we're about to return from the probe function and ret's value is not used. Signed-off-by:
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Martin Kaiser authored
Remove two defines which are not used in the ingenic-trng driver's code. Signed-off-by:
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Martin Kaiser authored
Enable compile testing for the ingenic-trng driver. Remove the dependency on HW_RANDOM. The ingenic-trng config section is under "if HW_RANDOM". Signed-off-by:
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- 20 Jul, 2023 35 commits
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Weili Qian authored
The private key of the curve key size generated by stdrng, which maybe not less than n. Therefore, the private key with the curve key size minus 1 is generated to ensure that the private key is less than n. Signed-off-by:
Weili Qian <qianweili@huawei.com> Signed-off-by:
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Uwe Kleine-König authored
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
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Yangtao Li authored
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by:
Yangtao Li <frank.li@vivo.com> Reviewed-by:
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Yangtao Li authored
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by:
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Yangtao Li authored
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by:
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Yangtao Li authored
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by:
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Martin Kaiser authored
The probe function enables the TRNG hardware before registering the driver. If registration fails, probe returns an error, but the TRNG remains enabled. Define init and cleanup functions, enable and disable the hardware there. Signed-off-by:
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Martin Kaiser authored
Remove some unused defines and fix the indentation. Signed-off-by:
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Martin Kaiser authored
Use devm_clk_get_enabled in the pic32 driver. Ensure that the clock is enabled as long as the driver is registered with the hwrng core. Fixes: 7ea39973 ("hwrng: pic32 - Use device-managed registration API") Signed-off-by:
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Martin Kaiser authored
Enable compile testing for the pic32 driver. Remove the dependency on HW_RANDOM. The pic32 config section is under "if HW_RANDOM". Signed-off-by:
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Martin Kaiser authored
SIMPLE_DEV_PM_OPS is deprecated, replace it with DEFINE_SIMPLE_DEV_PM_OPS and use pm_sleep_ptr for setting the driver's pm routines. We can now remove the __maybe_unused qualifier in the suspend and resume functions. Signed-off-by:
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Martin Kaiser authored
Simplify the code by calling dev_err_probe instead of dev_err and return. While at it, use the same device for all error messages. Signed-off-by:
Rouven Czerwinski <r.czerwinskis@pengutronix.de> Reviewed-by:
Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by:
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You Kangren authored
Mark UWORD_CPYBUF_SIZE with U suffix to make its type the same with words_num. Then replace the if statement with min() in qat_uclo_wr_uimage_raw_page() to make code shorter. Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
You Kangren <youkangren@vivo.com> Signed-off-by:
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Martin Kaiser authored
Use dev_err_probe to print a message and return an error. This makes the code a tiny bit shorter. Signed-off-by:
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Martin Kaiser authored
The nomadik driver uses devres to register itself with the hwrng core, the driver will be unregistered from hwrng when its device goes out of scope. This happens after the driver's remove function is called. However, nomadik's clock is disabled in the remove function. There's a short timeframe where nomadik is still registered with the hwrng core although its clock is disabled. I suppose the clock must be active to access the hardware and serve requests from the hwrng core. Switch to devm_clk_get_enabled and let devres disable the clock and unregister the hwrng. This avoids the race condition. Fixes: 3e75241b ("hwrng: drivers - Use device-managed registration API") Signed-off-by:
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Damian Muszynski authored
A firmware update for QAT GEN2 changed the format of a data structure used to report the heartbeat counters. To support all firmware versions, extend the heartbeat logic with an algorithm that detects the number of counters returned by firmware. The algorithm detects the number of counters to be used (and size of the corresponding data structure) by the comparison the expected size of the data in memory, with the data which was written by the firmware. Firmware detection is done one time during the first read of heartbeat debugfs file to avoid increasing the time needed to load the module. Signed-off-by:
Damian Muszynski <damian.muszynski@intel.com> Reviewed-by:
Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by:
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Damian Muszynski authored
Under some circumstances, firmware in the QAT devices could become unresponsive. The Heartbeat feature provides a mechanism to detect unresponsive devices. The QAT FW periodically writes to memory a set of counters that allow to detect the liveness of a device. This patch adds logic to enable the reporting of those counters, analyze them and report if a device is alive or not. In particular this adds (1) heartbeat enabling, reading and detection logic (2) reporting of heartbeat status and configuration via debugfs (3) documentation for the newly created sysfs entries (4) configuration of FW settings related to heartbeat, e.g. tick period (5) logic to convert time in ms (provided by the user) to clock ticks This patch introduces a new folder in debugfs called heartbeat with the following attributes: - status - queries_sent - queries_failed - config All attributes except config are reading only. In particular: - `status` file returns 0 when device is operational and -1 otherwise. - `queries_sent` returns the total number of heartbeat queries sent. - `queries_failed` returns the total number of heartbeat queries failed. - `config` allows to adjust the frequency at which the firmware writes counters to memory. This period is given in milliseconds and it is fixed for GEN4 devices. Signed-off-by:
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Damian Muszynski authored
The QAT hardware does not expose a mechanism to report its clock frequency. This is required to implement the Heartbeat feature. Add a clock measuring algorithm that estimates the frequency by comparing the internal timestamp counter incremented by the firmware with the time measured by the kernel. The frequency value is only used internally and not exposed to the user. Signed-off-by:
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Damian Muszynski authored
Drop legacy heartbeat interface from FW API as it is no longer used. Signed-off-by:
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Damian Muszynski authored
The power management feature in QAT 4xxx devices can disable clock sources used to implement timers. Because of that, the firmware needs to get an external reliable source of time. Add a kernel delayed work that periodically sends an event to the firmware. This is triggered every 200ms. At each execution, the driver sends a sync request to the firmware reporting the current timestamp counter value. This is a pre-requisite for enabling the heartbeat, telemetry and rate limiting features. Signed-off-by:
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Lucas Segarra Fernandez authored
Expose FW counters statistics by providing the "fw_counters" file under debugfs. Currently the statistics include the number of requests sent to the FW and the number of responses received from the FW for each Acceleration Engine, for all the QAT product line. This patch is based on earlier work done by Marco Chiappero. Co-developed-by:
Adam Guerin <adam.guerin@intel.com> Signed-off-by:
Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com> Reviewed-by:
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Jiapeng Chong authored
These functions are defined in the sig.c file, but not called elsewhere, so delete these unused functions. crypto/sig.c:24:34: warning: unused function '__crypto_sig_tfm'. Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5701Signed-off-by:
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by:
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Mario Limonciello authored
I will maintain the platform access interface and dynamic boost control support. Acked-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
Mario Limonciello <mario.limonciello@amd.com> Signed-off-by:
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Mario Limonciello authored
Interacting with dynamic boost control messages requires the caller to supply a signature. To allow validation of individual dynamic boost control components, introduce a set of tests that can be run. The tests can be run in 3 distinct different environments, and so certain tests will be skipped depending on the environment. 1. Systems that do not support DBC. 2. Production systems that support DBC but are secured silicon. 3. Pre-production systems that support DBC but are unsecured silicon. Unsecured silicon does not validate the signature, and so this allows testing more of the state machine and functionality. Acked-by:
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Mario Limonciello authored
Dynamic Boost Control commands are triggered by userspace with an IOCTL interface that userspace will prepare proper buffers for a request. To allow prototyping and testing this interface, add a python3 command line script that loads the dbc_library.so for utilizing the IOCTLs. The signature to use and UID are passed as arguments to this script. Acked-by:
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Mario Limonciello authored
Add a small shared library that demonstrates the usage of the IOCTL interface. This library can be linked to but, is intended to be loaded and used by higher level languages Acked-by:
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Mario Limonciello authored
After software has authenticated a dynamic boost control request, it can fetch and set supported parameters using a selection of messages. Add support for these messages and export the ability to do this to userspace. Acked-by:
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Mario Limonciello authored
As part of the authentication flow for Dynamic Boost Control, the calling software will need to send a uid used in all of its future communications. Add support for another IOCTL call to let userspace software set this up. Acked-by:
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Mario Limonciello authored
Dynamic Boost Control is a feature offered on AMD client platforms that allows software to request and set power or frequency limits. Only software that has authenticated with the PSP can retrieve or set these limits. Create a character device and ioctl for fetching the nonce. This ioctl supports optionally passing authentication information which will influence how many calls the nonce is valid for. Acked-by:
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Mario Limonciello authored
Dynamic boost control needs to use platform access symbols that look for the PSP master as part of initialization. So move the PSP master before psp_init() so that dynamic boost control can be initialized properly. Acked-by:
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Mario Limonciello authored
The bootloader and TEE versions are stored in registers that can be accessed from sysfs. This exports the information for recent client and datacenter parts. Acked-by:
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Mario Limonciello authored
As it's not always obvious what PSP bootloader or TEE version are present in OEM systems, add the ability to get this information from sysfs for supported platforms. Acked-by:
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Mario Limonciello authored
The attribute_show() macro is only valid for determining the availability of security related sysfs entries. Rename the macro to better show this relationship. Acked-by:
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- 14 Jul, 2023 1 commit
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Giovanni Cabiddu authored
The power management configuration of 4xxx devices is too aggressive and in some conditions the device might be prematurely put to a low power state. Increase the idle filter value to prevent that. In future, this will be set by firmware. Fixes: e5745f34 ("crypto: qat - enable power management for QAT GEN4") Signed-off-by:
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