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55e23aa9 |
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05-Dec-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop vchiq_log_debug() in favour of dev_dbg Drop vchiq_log_debug() macro which wraps dev_dbg(). Introduce the usage of dev_dbg() directly. Meanwhile at it, drop the usage of __func__ from the logs. Dynamic debug supports this via the 'f' decorator flag. Remove the entry from TODO regarding custom logging. VC04 is now aligned according to the standard kernel logging mechanisms. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231205084157.73819-5-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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078666d7 |
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05-Dec-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop vchiq_log_trace() in favour of dev_dbg Drop vchiq_log_trace() macro which wraps dev_dbg(). Introduce the usage of dev_dbg() directly. Meanwhile at it, drop the usage of __func__ from the logs. Dynamic debug supports this via the 'f' decorator flag. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231205084157.73819-4-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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085bb413 |
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05-Dec-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop vchiq_log_warning() in favour of dev_warn Drop vchiq_log_warning() macro which wraps dev_dbg(). Introduce the usage of dev_warn() directly. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231205084157.73819-3-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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e70f17ed |
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05-Dec-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop vchiq_log_error() in favour of dev_err Drop vchiq_log_error() macro which wraps dev_dbg(). Introduce the usage of dev_err() directly. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231205084157.73819-2-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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b43d958f |
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29-Oct-2023 |
Stefan Wahren <wahrenst@gmx.net> |
staging: vchiq_arm: move state dump to debugfs Besides the IOCTL interface the VCHIQ character device also provides a state dump of the whole VCHIQ driver via read. Moving the state dump function to debugfs has a lot advantages: - following changes on state dump doesn't break userspace ABI - debug doesn't depend on VCHIQ_CDEV - dump code simplifies a lot and reduce the chance of buffer overflows Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Tested-by: "Ricardo B. Marliere" <ricardo@marliere.net> Link: https://lore.kernel.org/r/20231029124837.119832-4-wahrenst@gmx.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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9996f004 |
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29-Oct-2023 |
Stefan Wahren <wahrenst@gmx.net> |
staging: vchiq_core: Make vchiq_dump_service_state static The function vchiq_dump_service_state() is only used by vchiq_dump_state() within vchiq_core.c. So move the definition of vchiq_dump_state() below vchiq_dump_service_state() in order to make it static. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://lore.kernel.org/r/20231029124837.119832-2-wahrenst@gmx.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ae094de3 |
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25-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Use %p4cc format modifier to print FourCC codes Drop VCHIQ_FOURCC_AS_4CHARS macro in favour of %p4cc format modifier to print FourCC codes in the logs. vchiq_use_internal() and vchiq_release_internal() uses entity character-array to store a transient string that contains a FourCC code. Increase the length of entity array(to 64 bytes) since %p4cc requires more bytes to hold the output characters. Suggested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231025060717.71895-2-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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b640e8f5 |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop log level mechanisms Drop the log level remnants since the logs are now ported to use dynamic logging. Drop macros, externs and global variables which were used in the log level mechanisms along with debugfs log entries. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-9-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c1d7fd5f |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Drop VCHIQ_LOG_PREFIX macro The macro is not used anymore, so drop it. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-8-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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9748de55 |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04: Convert vchiq_log_trace() to use dynamic debug Move vchiq_log_trace() custom logging wrapper based on printk to use dynamic debug. The log category is dictated by enum vchiq_log_category which will become the part of the trace string format that will be logged to dynamic debug (for grep). All the vchiq_log_trace() calls are adjusted to use the modified wrapper. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-7-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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f67af594 |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04: Convert(and rename) vchiq_log_info() to use dynamic debug Convert(and rename) vchiq_log_info() custom logging wrapping based on printk to use dynamic debug. The wrapper is now renamed to vchiq_log_debug() since most of the usage is around printing debug information. The log category is dictated by enum vchiq_log_category which will become the part of the debug string format that will be logged to dynamic debug (for grep). All the vchiq_log_info() calls are adjusted to use the modified wrapper vchiq_log_debug(). The existing custom logging for vchiq_log_info() also tries to log trace messages using SRVTRACE_LEVEL. This is simply moved to use the vchiq_log_debug() directly. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-6-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
0b120863 |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04: Convert vchiq_log_warning() to use dynamic debug Move vchiq_log_warning() custom logging wrapper based on printk to use dynamic debug. The log category is dictated by vchiq_log_category which will become the part of the warning string format that will be logged to dynamic debug (for grep). All the vchiq_log_warning() calls are adjusted to use the modified wrapper. While at that, remove the extraneous "----" from few of the warning string text. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-5-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1d8915cf |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04: Convert vchiq_log_error() to use dynamic debug Move vchiq_log_error() custom logging wrapper based on printk, to use dynamic debug. To categorise, enum vchiq_log_category has been introduced, which will become the part of the error string format that will be logged to dynamic debug (for grep). All the vchiq_log_error() calls are adjusted to use the dynamic debug wrapper. vchiq_loud_error_*() has been removed as a part of this patch and replaced with dev_err (so that they directly end up in kernel log, even if dynamic debug isn't enabled), which serves the purpose. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-4-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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33bdf010 |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Pass struct device to vchiq_init_slots() Pass struct device pointer to vchiq_init_slots(). In subsequent commits, vchiq_log_* macros will be ported to use dynamic debug (dev_dbg()), hence they need access to a struct device pointer. No functional changes intended in this commit. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-3-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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17dd991a |
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24-Oct-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Pass struct device to vchiq_log_dump_mem() Pass struct device pointer to vchiq_log_dump_mem(). In subsequent commits, vchiq_log_* macros will be ported to use dynamic debug (dev_dbg()), hence they need access to a struct device pointer. No functional changes intended in this commit. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20231024114428.443528-2-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2529ca21 |
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20-Jan-2023 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: interface: Drop include Makefile directive Drop the include directive. They can break the build, when one only wants to build a subdirectory. Replace with "../" for the includes, in the interface/ files instead. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Link: https://lore.kernel.org/r/20230120201104.606876-6-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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3ba31722 |
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23-Dec-2022 |
Umang Jain <umang.jain@ideasonboard.com> |
staging: vc04_services: Replace vchiq_status return type to int Modify the functions' signature using enum vchiq_status to return int. Currently, this patch only touches the function signatures and in subsequent patches each vchiq_status enumerated value will be replaced by a integer value. This patch acts as an initial point to address the TODO item: * Get rid of custom function return values for vc04_services/interface. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/20221223122404.170585-2-umang.jain@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c478aa12 |
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22-Dec-2022 |
Phil Elwell <phil@raspberrypi.com> |
staging: vchiq_core: Add comments to remote event parts struct remote_event and the related functions remote_event_*() provides a higher function between ARM core and VPU. It's very helpful for a reviewer to have explaining comments about these parts. Signed-off-by: Phil Elwell <phil@raspberrypi.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/20221222141553.138563-1-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1dbcdf74 |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: remove global 'vchiq_states' array Remove global 'vchiq_states' array, which is not used anymore. This is part of an effort to address TODO item "Get rid of all non essential global structures and create a proper per device structure" Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-10-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ed57d93e |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: use state from vchiq instance In 'handle_to_service', access the vchiq state from the vchiq instance instead of the global 'vchiq_states' array. This will allow getting rid of the global 'vchiq_states' array. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-9-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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6d02150c |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: pass vchiq instance to 'handle_to_service' In order to remove the 'vchiq_states' global array, we need to pass the vchiq_instance reference to the 'handle_to_service' function. This will allow accessing the vchiq state through the vchiq instance instead of through the global array. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-8-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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bad44825 |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: pass vchiq instance to 'vchiq_get_client_id' In order to remove the 'vchiq_states' global array, we need to pass the vchiq_instance reference to the 'handle_to_service' function, as well as to all functions that call 'handle_to_service'. This will allow accessing the vchiq state through the vchiq instance instead of through the global array. 'handle_to_service' is called by 'vchiq_get_client_id'. Therefore, pass the vchiq instance reference to it. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-6-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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14780bb1 |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: pass vchiq instance to 'find_service_by_handle' In order to remove the 'vchiq_states' global array, we need to pass the vchiq_instance reference to the 'handle_to_service' function, as well as to all functions that call 'handle_to_service'. This will allow accessing the vchiq state through the vchiq instance instead of through the global array. 'handle_to_service' is called by 'find_service_by_handle'. Therefore, pass the vchiq instance reference to 'find_service_by_handle' and to its callers. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-5-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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813fa44c |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: get rid of global device structure Get rid of the global g_dev structure. This is part of an effort to address TODO item "Get rid of all non essential global structures and create a proper per device structure" I chose to pass the vchiq_instance around instead of the device reference because in order to get rid of the 'vchiq_states' global array in the future, we will need another way to access the vchiq_state in the 'handle_to_service' function. Therefore, we will need to pass the vchiq_instance to it (or the vchiq_state), and also pass it to functions higher up in the caller chain, such as 'vchiq_bulk_transmit' and friends which are used in the bcm2835-audio consumer. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-3-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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d8d307e6 |
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18-May-2022 |
Adrien Thierry <athierry@redhat.com> |
staging: vchiq_arm: add reference to vchiq device in vchiq_state Add a reference to the vchiq device in the vchiq_state structure. This allows the device structure to be passed around, which will be useful in order to get rid of the global g_dev structure. This change will also make it possible to use standard kernel logging macros instead of the custom ones. Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Adrien Thierry <athierry@redhat.com> Link: https://lore.kernel.org/r/20220518191126.60396-2-athierry@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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63ab9060 |
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16-May-2022 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vc04_services: remove unused macro BITSET_CLR is not used. Remove the define. Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20220516221741.1015814-1-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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e831b695 |
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23-Jan-2022 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: fix type of parameter localport The whole vchiq driver uses unsigned int for "localport" except of find_service_by_port(). So fix this and get the rid of this suspicous cast. Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1642968143-19281-8-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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b0e160f0 |
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22-Nov-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core: remove superfluous static_assert statement After removing the BITSET_T typedef in commit d8a364820e01 ("staging: vchiq_core: get rid of typedef") the static_assert statement becomes superfluous as now we are checking if the size of the u32 type is 4 bytes. Hence, just remove the static_assert statement. Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211122130926.342128-1-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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d8a36482 |
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29-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core: get rid of typedef The typedef BITSET_T is acting as a synonym of u32. However, using the type u32 directly makes the code more readable. Furthermore, typedef should only be used in some cases, [1]. Hence, get rid of it. [1] Documentation/process/coding-style.rst Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211029200012.45986-1-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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9393b3bb |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core: drop extern prefix in function declarations Remove unnecessary extern prefix in function declarations. While at it, remove a now outdated comment and realign the function declarations in order to improve readability. Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-7-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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8dd56723 |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq: drop trailing semicolon in macro definition As reported by checkpatch.pl, macro definitions should not use a trailing semicolon. Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-6-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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f9f061d9 |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core.h: use preferred kernel types Change types from uint32_t and uint64_t to the preferred ones u32 and u64. Reported by checkpatch.pl, with the exception of the one in function vchiq_log_dump_mem(). Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-5-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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9dcc5f1c |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core.h: fix CamelCase in function declaration Renaming function declaration to avoid CamelCase use. As this was already fixed in the function definition in commit 801b1aa002d3 ("staging: vc04_services: fix CamelCase"), the current change make the names of the variables in the function definition and declartion match. Reported by checkpatch.pl Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-4-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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8a7e5633 |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core: cleanup code alignment issues Fix code alignment issues reported by checkpatch.pl Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-3-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1e1093ff |
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24-Oct-2021 |
Gaston Gonzalez <gascoar@gmail.com> |
staging: vchiq_core: cleanup blank lines Remove unnecessary blank lines. Reported by checkpatch.pl Signed-off-by: Gaston Gonzalez <gascoar@gmail.com> Link: https://lore.kernel.org/r/20211024212524.370078-2-gascoar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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e4c1935e |
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11-Sep-2021 |
Ojaswin Mujoo <ojaswin98@gmail.com> |
staging: vchiq: Replace function typedefs with equivalent declaration Replace function typedefs with the equivalent declarations to better align with the linux kenel coding style The following typedefs were changed: * VCHIQ_CONNECTED_CALLBACK_T * vchiq_userdata_term Signed-off-by: Ojaswin Mujoo <ojaswin98@gmail.com> Link: https://lore.kernel.org/r/a8e4e0457b5fcc88c7f297f9d669dfb7e7d91ed5.1631366317.git.ojaswin98@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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68a48596 |
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03-Jun-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_arm: tidy up service function naming During a recent review Dan Carpenter reported that the function naming of (un)lock_service is misleading. They are like wrapper around kref_get / kref_put and don't have anything to do with locking. So use a name which represent more the actual behavior. Btw add the vchiq prefix to avoid possible name conflicts. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1622735405-9980-12-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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15618b35 |
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03-Jun-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: get the rid of vchiq_static_assert Use static_assert from the kernel instead of opencode it. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1622735405-9980-6-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e63becb7 |
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03-Jun-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: get the rid of IS_POW2 The macro IS_POW2 is only used to ensure some size are powers of 2. Better use BUILD_BUG_ON_NOT_POWER_OF_2 for this. Since this must be done in a function, merge all these checks in a new function. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1622735405-9980-5-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
b9fab679 |
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03-Jun-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: move internals to C source There is no need to export those definitions, so keep them in the source file. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1622735405-9980-4-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e39ff0e4 |
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15-May-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_arm: make vchiq_shutdown_internal return void The function vchiq_shutdown_internal always returns VCHIQ_SUCCESS. So change the return type to void and simplify the logic in vchiq_shutdown. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1621105859-30215-17-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
fd11b55d |
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24-Apr-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: drop vchiq_status from vchiq_init_state Replace the custom set of return values with proper Linux error codes for vchiq_init_state(). Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1619347863-16080-12-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a2161d1d |
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24-Apr-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: drop vchiq_status from vchiq_set_service_option Replace the custom set of return values with proper Linux error codes for vchiq_set_service_option(). Now we can use the result directly as return value for vchiq_ioctl(). Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1619347863-16080-10-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a9fbd828 |
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24-Apr-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_arm: drop enum vchiq_status from vchiq_*_internal Replace the custom set of return values with proper Linux error codes for the following functions: vchiq_use_internal() vchiq_release_internal() vchiq_use_service_internal() vchiq_release_service_internal() Now we can use the result directly as return value for vchiq_ioctl(). Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1619347863-16080-9-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
ae694028 |
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24-Apr-2021 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_2835_arm: drop enum vchiq_status Replace the custom set of return values with proper Linux error codes. As a result we need to initialize vchiq_status in vchiq_init_state. Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/1619347863-16080-8-git-send-email-stefan.wahren@i2se.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3da87575 |
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27-Oct-2020 |
Amarjargal Gundjalam <amarjargal16@gmail.com> |
staging: vc04_services: fix block comment style Fix block comments to adhere to the kernel coding style. Signed-off-by: Amarjargal Gundjalam <amarjargal16@gmail.com> Link: https://lore.kernel.org/r/20201027175117.32826-2-amarjargal16@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
1c954540 |
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25-Sep-2020 |
Arnd Bergmann <arnd@arndb.de> |
staging: vchiq: avoid mixing kernel and user pointers As found earlier, there is a problem in the create_pagelist() function that takes a pointer argument that either points into vmalloc space or into user space, with the pointer value controlled by user space allowing a malicious user to trick the driver into accessing the kernel instead. Avoid this problem by adding another function argument and passing kernel pointers separately from user pointers. This makes it possible to rely on sparse to point out invalid conversions, and it prevents user space from faking a kernel pointer. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200925114424.2647144-2-arnd@arndb.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
4184da4f |
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25-Sep-2020 |
Arnd Bergmann <arnd@arndb.de> |
staging: vchiq: fix __user annotations My earlier patches caused some new sparse warnings, but it turns out that a number of those are actual bugs, or at least suspicous code. Adding __user annotations to the data structures that are defined in uapi headers helps avoid the new warnings, but that causes a different set of warnings to show up, as some of these structures are used both inside of the kernel and at the user interface but storing pointers to different things there. Duplicating the vchiq_service_params and vchiq_completion_data structures in turn takes care of most of those, and then it turns out that there is a 'data' pointer that can be any of a __user address, a dmd_addr_t and a kernel pointer in vmalloc space at times. I'm trying to annotate these as best I can without changing behavior, but there still seems to be a serious bug when user space passes a valid vmalloc space address instead of a user pointer. Adding comments in the code there, and leaving the warnings in place that seem to correspond to actual bugs. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200925114424.2647144-1-arnd@arndb.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
2ad4ba07 |
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29-Jun-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move vchiq.h into include directory To make the separation clear between vchiq's header files and vchiq.h, which is to be used by services and is the 'public' API, move it into a dedicated includes directory. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629150945.10720-48-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
5ada309f |
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29-Jun-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move defines into core header Those are only used in the core vchiq code, while present in vchiq's 'public' API header. Move them into the right place. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629150945.10720-47-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3d212a83 |
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29-Jun-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move conditional barrier definition into vchiq_core.h The barrier is only used by core code. So keep the barrier definition in the core header. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629150945.10720-45-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
76dbbe77 |
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29-Jun-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move definitions only used by core into core header vchiq_if.h is used by service consumers and only the exported API should be present. Move the rest of definitions, which were not exported by the way, to vchiq_core.h where they belong. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629150945.10720-40-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
77b3f6c4 |
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29-Jun-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move message queue into struct vchiq_service This has historically been handled by vchi, but there is no reason why this couldn't be handled directly in vchiq. The patch tries to avoid altering any behavior, with the exception of the msg_queue size, which is now fixed to VCHIQ_MAX_SLOTS (it was set to VCHIQ_MAX_SLOTS / 2). This is done to match vchiq's user_service message queue, which could be merged with this one in the future. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200629150945.10720-24-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a224f284 |
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27-May-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: Move copy callback handling into vchiq All vchi users use the kernel variant of the copy callback. The only user for the user space variant of the copy callback is in the ioctl implementation. So move all this copying logic into vchiq, and expose a new function that explicitly passes kernel messages. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200527115400.31391-4-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a2203cfe |
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12-Feb-2020 |
Marcelo Diop-Gonzalez <marcgonzalez@google.com> |
staging: vc04_services: don't increment service refcount when it's not needed There are a few places where a service's reference count is incremented, something quick is done, and the refcount is dropped. This can be made a little simpler/faster by not grabbing a reference in these cases. Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com> Link: https://lore.kernel.org/r/ac6186ac888f1acf489b5b504efcba8b0d6a8b25.1581532523.git.marcgonzalez@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3c27a36f |
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12-Feb-2020 |
Marcelo Diop-Gonzalez <marcgonzalez@google.com> |
staging: vc04_services: use kref + RCU to reference count services Currently reference counts are implemented by locking service_spinlock and then incrementing the service's ->ref_count field, calling kfree() when the last reference has been dropped. But at the same time, there's code in multiple places that dereferences pointers to services without having a reference, so there could be a race there. It should be possible to avoid taking any lock in unlock_service() or service_release() because we are setting a single array element to NULL, and on service creation, a mutex is locked before looking for a NULL spot to put the new service in. Using a struct kref and RCU-delaying the freeing of services fixes this race condition while still making it possible to skip grabbing a reference in many places. Also it avoids the need to acquire a single spinlock when e.g. taking a reference on state->services[i] when somebody else is in the middle of taking a reference on state->services[j]. Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com> Link: https://lore.kernel.org/r/3bf6f1ec6ace64d7072025505e165b8dd18b25ca.1581532523.git.marcgonzalez@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
aca055ed |
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31-Jan-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vc04_services: Delete vchiq_platform_check_suspend() The function does nothing. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200131103836.14312-20-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
913e4e05 |
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31-Jan-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vc04_services: Get rid of vchiq_platform_handle_timeout() The function does nothing. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200131103836.14312-11-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
88084848 |
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31-Jan-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vc04_services: Get rid of vchiq_platform_suspend/resume() vchiq_platform_suspend() and vchiq_platform_resume() do nothing, get rid of them. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200131103836.14312-9-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
0e266212 |
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31-Jan-2020 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vc04_services: Get rid of vchiq_platform_paused/resumed() vchiq_platform_paused() and vchiq_platform_resumed() do nothing. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200131103836.14312-8-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
0f6f8749 |
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20-Nov-2019 |
Marcelo Diop-Gonzalez <marcgonzalez@google.com> |
staging: vchiq: Have vchiq_dump_* functions return an error code These functions currently modify the struct dump_context passed to them, and set context->actual to -EFAULT in case of error. The issue is that this is never returned to the user (except accidentally when things align so that that happens). So, have these functions return 0 on success and the appropriate error code otherwise, and return nonzero errors to the user. Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20191120202102.249121-5-marcgonzalez@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
885961fe |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_PLATFORM_STATE_T typedef with struct opaque_platform_state Replace VCHIQ_PLATFORM_STATE_T typedef with struct opaque_platform_state to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/ed1a877637a53881ed65dc232da04dc40fbd9fc3.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
4ddf9a25 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_INSTANCE_T typedef with struct vchiq_instance Replaces VCHIQ_INSTANCE_T typedef with struct vchiq_instance to match kernel code style. Issue found by checkpatch. Additionally, as part of the process renames "struct vchiq_instance_struct" to "struct vchiq_instance". Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/ed2b3076f93a920149716687b48e0c5e3ddf0569.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
9ce46d55 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_SERVICE_HANDLE_T typedef with unsigned int Replaces VCHIQ_SERVICE_HANDLE_T typedef with unsigned int to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/9d35b9fea684d18cc1e989621808d77eef3081c6.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e661ad49 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Rename callback VCHIQ_USERDATA_TERM_T to vchiq_userdata_term Renames callback VCHIQ_USERDATA_TERM_T to vchiq_userdata_term to match kernel code style. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/478914a1e756f78c3277acb3852c1ccdcb2d5750.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
d2684ce8 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_BULK_DIR_T enum typedef with enum vchiq_bulk_dir Replaces VCHIQ_BULK_DIR_T enum typedef with enum vchiq_bulk_dir to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/344e01e371aa7fbf670ba118be174e391e078e6a.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
051fbf47 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_CONNSTATE_T enum typedef with enum vchiq_connstate Replaces VCHIQ_CONNSTATE_T enum typedef with enum vchiq_connstate to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/7e64765a55193413e9668dc53f751c435369ed80.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
c6ac64b1 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_BULK_MODE_T enum typedef with enum vchiq_bulk_mode Replaces VCHIQ_BULK_MODE_T enum typedef with enum vchiq_bulk_mode to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/667037e1810921e30371dbeb52c1ae489bf31f8c.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
00d36494 |
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05-Nov-2019 |
Jamal Shareef <jamal.k.shareef@gmail.com> |
staging: vc04_services: Replace VCHIQ_STATUS_T enum typedef with enum vchiq_status Replaces VCHIQ_STATUS_T enum typedef with enum vchiq_status to match kernel code style. Issue found by checkpatch. Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com> Link: https://lore.kernel.org/r/7509cfa679c6d383ad979282f3d33b227d4d7f87.1572994235.git.jamal.k.shareef@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
388fa43d |
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13-Oct-2019 |
Wambui Karuga <wambui.karugax@gmail.com> |
staging: vc04_services: use DIV_ROUND_UP helper macro Replace open-coded division calculation with the DIV_ROUND_UP helper macro for better readability. Issue found using coccinelle: @@ expression n,d; @@ ( - ((n + d - 1) / d) + DIV_ROUND_UP(n,d) | - ((n + (d - 1)) / d) + DIV_ROUND_UP(n,d) ) Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com> Link: https://lore.kernel.org/r/20191013184750.32766-1-wambui.karugax@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
bf1ca0c6 |
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25-Jun-2019 |
Nishka Dasgupta <nishkadg.linux@gmail.com> |
staging: vc04_services: Remove vchiq_send_remote_release() Remove unused function vchiq_send_remote_release. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
49d07ccb |
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25-Jun-2019 |
Nishka Dasgupta <nishkadg.linux@gmail.com> |
staging: vc04_services: Remove vchiq_resume_internal() Remove unused function vchiq_resume_internal. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a4013c64 |
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25-Jun-2019 |
Nishka Dasgupta <nishkadg.linux@gmail.com> |
staging: vc04_services: Remove vchiq_pause_internal() Remove unused function vchiq_pause_internal. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3baad68a |
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01-Apr-2019 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
staging: vc04_services: remove remaining redundant license text Now that the SPDX tag is in all vc04_services files, that identifies the license in a specific and legally-defined manner. So the extra GPL and BSD text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the license text. No copyright headers or other non-license-description text was removed. Cc: Eric Anholt <eric@anholt.net> Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Cc: Aymen Qader <qader.aymen@gmail.com> Cc: "Tobias Büttner" <tobias.buettner@fau.de> Cc: Dominic Braun <inf.braun@fau.de> Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Cc: Alejandro Ismael Silva <silva.alejandro.ismael@gmail.com> Cc: Phil Elwell <phil@raspberrypi.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
371ebdbe |
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01-Apr-2019 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
staging: vc04_services: add proper SPDX identifier for dual licensed files There are a number of vc04_services files that are dual licensed under the GPL2 and BSD-3 licenses. They currently do not have a SPDX identifier on them, so fix that up and add the proper identifier so that tools can pick it up easily. Cc: Eric Anholt <eric@anholt.net> Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Cc: Aymen Qader <qader.aymen@gmail.com> Cc: "Tobias Büttner" <tobias.buettner@fau.de> Cc: Dominic Braun <inf.braun@fau.de> Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Cc: Alejandro Ismael Silva <silva.alejandro.ismael@gmail.com> Cc: Phil Elwell <phil@raspberrypi.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
2d0a0291 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_STATE_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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f5a98269 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SLOT_ZERO_T Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
6f1e4141 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SLOT_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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a6103603 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SLOT_INFO_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c55aedfe |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SHARED_STATE_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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7926c328 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SERVICE_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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d3af2bcc |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SERVICE_QUOTA_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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0b53ca31 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SERVICE_PARAMS_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c18cbdee |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_SERVICE_BASE_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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bc96a5f0 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_BULK_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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029a8a18 |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove VCHIQ_BULK_QUEUE_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
4075fa9ef |
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14-Dec-2018 |
Dominic Braun <inf.braun@fau.de> |
staging: vc04_services: Remove REMOTE_EVENT_T typedef Typedefing structs is not encouraged in the kernel. Signed-off-by: Dominic Braun <inf.braun@fau.de> Signed-off-by: Tobias Büttner <tobias.buettner@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
852b2876 |
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10-Dec-2018 |
Arnd Bergmann <arnd@arndb.de> |
staging: vchiq: rework remove_event handling I had started the removal of semaphores in this driver without knowing that Nicolas Saenz Julienne also worked on this. In case of the "remote event" infrastructure, my solution seemed significantly better, so I'm proposing this as a change on top. The problem with using either semaphores or completions here is that it's an overly complex way of waking up a thread, and it looks like the 'count' of the semaphore can easily get out of sync, even though I found it hard to come up with a specific example. Changing it to a 'wait_queue_head_t' instead of a completion simplifies this by letting us wait directly on the 'event->fired' variable that is set by the videocore. Another simplification is passing the wait queue directly into the helper functions instead of going through the fragile logic of recording the offset inside of a structure as part of a shared memory variable. This also avoids one uncached memory read and should be faster. Note that I'm changing it back to 'killable' after the previous patch changed 'killable' to 'interruptible', apparently based on a misunderstanding of the subtle down_interruptible() macro override in vchiq_killable.h. Fixes: f27e47bc6b8b ("staging: vchiq: use completions instead of semaphores") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f27e47bc |
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20-Nov-2018 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq: use completions instead of semaphores It is preferred in the kernel to avoid using semaphores to wait for events, as they are optimised for the opposite situation; where the common case is that they are available and may block only occasionally. FYI see this thread: https://lkml.org/lkml/2008/4/11/323. Also completions are semantically more explicit in this case. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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14f4d72f |
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20-Nov-2018 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq-core: get rid of is_master distinction VCHIQ bulk transfers are what most people call DMA transfers. The CPU sends a list of physical addresses to the VideoCore which then access the memory directly without the need for CPU interaction. With this setup we call the CPU the "slave" and the VideoCore the "master". There seems to be an option to switch roles in vchiq. Which nobody is using nor is properly implemented. So we get rid of the "is_master == 1" option, and all the related code. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
ee43f745 |
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20-Nov-2018 |
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> |
staging: vchiq_arm: get rid of vchi_mh.h The concept of VCHI_MEM_HANDLE_T is introduced by this header file and was meant to be used with bulk transfers. After a quick look in vchiq_core.c it is pretty clear that it actually accomplishes nothing nor alters the bulk transfers in any way. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
1cc5a28b |
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31-Mar-2018 |
Stefan Wahren <stefan.wahren@i2se.com> |
staging: vchiq_core: remove BITSET_ZERO Hiding memset behind a macro isn't the best, because it relies on that the parameter is not a pointer. Luckily all user has been removed, so we can remove BITSET_ZERO too. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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7ab1197d |
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27-Sep-2017 |
Keerthi Reddy <keerthigd4990@gmail.com> |
staging: vc04_services: please do not use multiple blank lines Blank lines use up extra space in file and makes the file larger. So do not use multiple blanklines Signed-off-by: Keerthi Reddy <keerthigd4990@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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49bec49f |
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30-Oct-2016 |
Michael Zoran <mzoran@crowfest.net> |
staging: vc04_services: remove vchiq_copy_from_user The vchiq_copy_from_user function is not portable and is consider "bad practice." Replace this function with a callback based mechanism that is passed downward on the stack. When it is actually time to copy the data, the callback is called to copy the data into the message. This callback is provided internally for userland calls through ioctls on the device. NOTE: Internal clients will need to be modified to work with the new internal API. Test Run: vchiq_test -p 1 vchiq_test -f 10 Both tests pass. Internal API Changes: Change vchi_msg_queue to: int32_t vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle, ssize_t (*copy_callback)(void *context, void *dest, size_t offset, size_t maxsize), void *context, uint32_t data_size ); Remove: vchi_msg_queuev_ex vchi_msg_queuev These functions were not implemented anyway so no need to fix them. It's easier to just remove them. Signed-off-by: Michael Zoran <mzoran@crowfest.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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24a4262a |
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19-Oct-2016 |
Michael Zoran <mzoran@crowfest.net> |
staging: vc04_services: Convert pointers in shared state to offsets The arm processor core and the GPU have a shared data structure. This structure contains pointers to base linux kernel objects such as events. The size of the pointer changes between 32 bit and 64 bit, so it is necessary to convert these pointers to offsets from the beginning of the state structure. Luckly, the GPU does not interpret these pointers/offsets, but this change is necessary to keep the structure the same since the GPU code is outside the scope of the linux kernel and can't be easily changed. Signed-off-by: Michael Zoran <mzoran@crowfest.net> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
35b7ebda |
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19-Oct-2016 |
Michael Zoran <mzoran@crowfest.net> |
staging: vc04_services: Convert dsb() to dsb(sy) The dsb() macro for 32 arm compiles to dsb(sy) in the binary file. This macro is no longer supported on arm64, so instead use dsb(sy) which is completely binary compatible. Signed-off-by: Michael Zoran <mzoran@crowfest.net> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
71bad7f0 |
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02-Jul-2013 |
popcornmix <popcornmix@gmail.com> |
staging: add bcm2708 vchiq driver Signed-off-by: popcornmix <popcornmix@gmail.com> vchiq: create_pagelist copes with vmalloc memory Signed-off-by: Daniel Stone <daniels@collabora.com> vchiq: fix the shim message release Signed-off-by: Daniel Stone <daniels@collabora.com> vchiq: export additional symbols Signed-off-by: Daniel Stone <daniels@collabora.com> VCHIQ: Make service closure fully synchronous (drv) This is one half of a two-part patch, the other half of which is to the vchiq_lib user library. With these patches, calls to vchiq_close_service and vchiq_remove_service won't return until any associated callbacks have been delivered to the callback thread. VCHIQ: Add per-service tracing The new service option VCHIQ_SERVICE_OPTION_TRACE is a boolean that toggles tracing for the specified service. This commit also introduces vchi_service_set_option and the associated option VCHI_SERVICE_OPTION_TRACE. vchiq: Make the synchronous-CLOSE logic more tolerant vchiq: Move logging control into debugfs vchiq: Take care of a corner case tickled by VCSM Closing a connection that isn't fully open requires care, since one side does not know the other side's port number. Code was present to handle the case where a CLOSE is sent immediately after an OPEN, i.e. before the OPENACK has been received, but this was incorrectly being used when an OPEN from a client using port 0 was rejected. (In the observed failure, the host was attempting to use the VCSM service, which isn't present in the 'cutdown' firmware. The failure was intermittent because sometimes the keepalive service would grab port 0.) This case can be distinguished because the client's remoteport will still be VCHIQ_PORT_FREE, and the srvstate will be OPENING. Either condition is sufficient to differentiate it from the special case described above. vchiq: Avoid high load when blocked and unkillable vchiq: Include SIGSTOP and SIGCONT in list of signals not-masked by vchiq to allow gdb to work vchiq_arm: Complete support for SYNCHRONOUS mode vchiq: Remove inline from suspend/resume vchiq: Allocation does not need to be atomic vchiq: Fix wrong condition check The log level is checked from within the log call. Remove the check in the call. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> BCM270x: Add vchiq device to platform file and Device Tree Prepare to turn the vchiq module into a driver. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2708: vchiq: Add Device Tree support Turn vchiq into a driver and stop hardcoding resources. Use devm_* functions in probe path to simplify cleanup. A global variable is used to hold the register address. This is done to keep this patch as small as possible. Also make available on ARCH_BCM2835. Based on work by Lubomir Rintel. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> vchiq: Change logging level for inbound data vchiq_arm: Two cacheing fixes 1) Make fragment size vary with cache line size Without this patch, non-cache-line-aligned transfers may corrupt (or be corrupted by) adjacent data structures. Both ARM and VC need to be updated to enable this feature. This is ensured by having the loader apply a new DT parameter - cache-line-size. The existence of this parameter guarantees that the kernel is capable, and the parameter will only be modified from the safe default if the loader is capable. 2) Flush/invalidate vmalloc'd memory, and invalidate after reads vchiq: fix NULL pointer dereference when closing driver The following code run as root will cause a null pointer dereference oops: int fd = open("/dev/vc-cma", O_RDONLY); if (fd < 0) err(1, "open failed"); (void)close(fd); [ 1704.877721] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 1704.877725] pgd = b899c000 [ 1704.877736] [00000000] *pgd=37fab831, *pte=00000000, *ppte=00000000 [ 1704.877748] Internal error: Oops: 817 [#1] PREEMPT SMP ARM [ 1704.877765] Modules linked in: evdev i2c_bcm2708 uio_pdrv_genirq uio [ 1704.877774] CPU: 2 PID: 3656 Comm: stress-ng-fstat Not tainted 3.19.1-12-generic-bcm2709 #12-Ubuntu [ 1704.877777] Hardware name: BCM2709 [ 1704.877783] task: b8ab9b00 ti: b7e68000 task.ti: b7e68000 [ 1704.877798] PC is at __down_interruptible+0x50/0xec [ 1704.877806] LR is at down_interruptible+0x5c/0x68 [ 1704.877813] pc : [<80630ee8>] lr : [<800704b0>] psr: 60080093 sp : b7e69e50 ip : b7e69e88 fp : b7e69e84 [ 1704.877817] r10: b88123c8 r9 : 00000010 r8 : 00000001 [ 1704.877822] r7 : b8ab9b00 r6 : 7fffffff r5 : 80a1cc34 r4 : 80a1cc34 [ 1704.877826] r3 : b7e69e50 r2 : 00000000 r1 : 00000000 r0 : 80a1cc34 [ 1704.877833] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 1704.877838] Control: 10c5387d Table: 3899c06a DAC: 00000015 [ 1704.877843] Process do-oops (pid: 3656, stack limit = 0xb7e68238) [ 1704.877848] Stack: (0xb7e69e50 to 0xb7e6a000) [ 1704.877856] 9e40: 80a1cc3c 00000000 00000010 b88123c8 [ 1704.877865] 9e60: b7e69e84 80a1cc34 fff9fee9 ffffffff b7e68000 00000009 b7e69ea4 b7e69e88 [ 1704.877874] 9e80: 800704b0 80630ea4 fff9fee9 60080013 80a1cc28 fff9fee9 b7e69edc b7e69ea8 [ 1704.877884] 9ea0: 8040f558 80070460 fff9fee9 ffffffff 00000000 00000000 00000009 80a1cb7c [ 1704.877893] 9ec0: 00000000 80a1cb7c 00000000 00000010 b7e69ef4 b7e69ee0 803e1ba4 8040f514 [ 1704.877902] 9ee0: 00000e48 80a1cb7c b7e69f14 b7e69ef8 803e1c9c 803e1b74 b88123c0 b92acb18 [ 1704.877911] 9f00: b8812790 b8d815d8 b7e69f24 b7e69f18 803e2250 803e1bc8 b7e69f5c b7e69f28 [ 1704.877921] 9f20: 80167bac 803e222c 00000000 00000000 b7e69f54 b8ab9ffc 00000000 8098c794 [ 1704.877930] 9f40: b8ab9b00 8000efc4 b7e68000 00000000 b7e69f6c b7e69f60 80167d6c 80167b28 [ 1704.877939] 9f60: b7e69f8c b7e69f70 80047d38 80167d60 b7e68000 b7e68010 8000efc4 b7e69fb0 [ 1704.877949] 9f80: b7e69fac b7e69f90 80012820 80047c84 01155490 011549a8 00000001 00000006 [ 1704.877957] 9fa0: 00000000 b7e69fb0 8000ee5c 80012790 00000000 353d8c0f 7efc4308 00000000 [ 1704.877966] 9fc0: 01155490 011549a8 00000001 00000006 00000000 00000000 76cf3ba0 00000003 [ 1704.877975] 9fe0: 00000000 7efc42e4 0002272f 76e2ed66 60080030 00000003 00000000 00000000 [ 1704.877998] [<80630ee8>] (__down_interruptible) from [<800704b0>] (down_interruptible+0x5c/0x68) [ 1704.878015] [<800704b0>] (down_interruptible) from [<8040f558>] (vchiu_queue_push+0x50/0xd8) [ 1704.878032] [<8040f558>] (vchiu_queue_push) from [<803e1ba4>] (send_worker_msg+0x3c/0x54) [ 1704.878045] [<803e1ba4>] (send_worker_msg) from [<803e1c9c>] (vc_cma_set_reserve+0xe0/0x1c4) [ 1704.878057] [<803e1c9c>] (vc_cma_set_reserve) from [<803e2250>] (vc_cma_release+0x30/0x38) [ 1704.878069] [<803e2250>] (vc_cma_release) from [<80167bac>] (__fput+0x90/0x1e0) [ 1704.878082] [<80167bac>] (__fput) from [<80167d6c>] (____fput+0x18/0x1c) [ 1704.878094] [<80167d6c>] (____fput) from [<80047d38>] (task_work_run+0xc0/0xf8) [ 1704.878109] [<80047d38>] (task_work_run) from [<80012820>] (do_work_pending+0x9c/0xc4) [ 1704.878123] [<80012820>] (do_work_pending) from [<8000ee5c>] (work_pending+0xc/0x20) [ 1704.878133] Code: e50b1034 e3a01000 e50b2030 e580300c (e5823000) ..the fix is to ensure that we have actually initialized the queue before we attempt to push any items onto it. This occurs if we do an open() followed by a close() without any activity in between. Signed-off-by: Colin Ian King <colin.king@canonical.com> vchiq_arm: Sort out the vmalloc case See: https://github.com/raspberrypi/linux/issues/1055 vchiq: hack: Add include depecated dma include file [gregkh] added dependancy on CONFIG_BROKEN to make things sane for now. Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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