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path: root/drivers/net/wwan/iosm
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2021-07-01net: wwan: iosm: correct link-id handlingM Chetan Kumar
Link ID to be kept intact with MBIM session ID Ex: ID 0 should be associated to MBIM session ID 0. Reported-by: Loic Poulain <loic.poulain@linaro.org> Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-01net: wwan: iosm: remove reduandant checkM Chetan Kumar
Remove reduandant IP session id check since required checks are in place under caller. Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-01net: wwan: iosm: fix uevent reportingM Chetan Kumar
Change uevent env variable name to IOSM_EVENT & correct reporting format to key=value pair. Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-22wwan: core: add WWAN common private data for netdevSergey Ryazanov
The WWAN core not only multiplex the netdev configuration data, but process it too, and needs some space to store its private data associated with the netdev. Add a structure to keep common WWAN core data. The structure will be stored inside the netdev private data before WWAN driver private data and have a field to make it easier to access the driver data. Also add a helper function that simplifies drivers access to their data. At the moment we use the common WWAN private data to store the WWAN data link (channel) id at the time the link is created, and report it back to user using the .fill_info() RTNL callback. This should help the user to be aware which network interface is bound to which WWAN device data channel. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> CC: M Chetan Kumar <m.chetan.kumar@intel.com> CC: Intel Corporation <linuxwwan@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-22net: iosm: create default link via WWAN coreSergey Ryazanov
Utilize the just introduced WWAN core feature to create a default netdev for the default data (IP MUX) channel. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> CC: M Chetan Kumar <m.chetan.kumar@intel.com> CC: Intel Corporation <linuxwwan@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-22wwan: core: support default netdev creationSergey Ryazanov
Most, if not each WWAN device driver will create a netdev for the default data channel. Therefore, add an option for the WWAN netdev ops registration function to create a default netdev for the WWAN device. A WWAN device driver should pass a default data channel link id to the ops registering function to request the creation of a default netdev, or a special value WWAN_NO_DEFAULT_LINK to inform the WWAN core that the default netdev should not be created. For now, only wwan_hwsim utilize the default link creation option. Other drivers will be reworked next. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> CC: M Chetan Kumar <m.chetan.kumar@intel.com> CC: Intel Corporation <linuxwwan@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-22net: iosm: drop custom netdev(s) removingSergey Ryazanov
Since the last commit, the WWAN core will remove all our network interfaces for us at the time of the WWAN netdev ops unregistering. Therefore, we can safely drop the custom code that cleans the list of created netdevs. Anyway it no longer removes any netdev, since all netdevs were removed earlier in the wwan_unregister_ops() call. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com> CC: M Chetan Kumar <m.chetan.kumar@intel.com> CC: Intel Corporation <linuxwwan@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-21net: iosm: remove an unnecessary NULL checkDan Carpenter
The address of &ipc_mux->ul_adb can't be NULL because it points to the middle of a non-NULL struct. Fixes: 9413491e20e1 ("net: iosm: encode or decode datagram") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-16net: iosm: remove the repeated declaration and commentShaokun Zhang
Function 'ipc_mmio_get_cp_version' is declared twice, so remove the repeated declaration and wrong comments. Cc: M Chetan Kumar <m.chetan.kumar@intel.com> Cc: Intel Corporation <linuxwwan@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com> Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-16net: iosm: add missing MODULE_DEVICE_TABLEZou Wei
This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-14net: wwan: iosm: Remove DEBUG flagLoic Poulain
Author forgot to remove that flag. Fixes: f7af616c632e ("net: iosm: infrastructure") Reported-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: infrastructureM Chetan Kumar
1) Kconfig & Makefile changes for IOSM Driver compilation. 2) Add IOSM Driver documentation. 3) Modified MAINTAINER file for IOSM Driver addition. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: net driverM Chetan Kumar
1) Create net device & implement net operations for data/IP communication. 2) Bind IP Link to mux IP session for simultaneous IP traffic. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: uevent supportM Chetan Kumar
Report modem status via uevent. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: protocol operationsM Chetan Kumar
1) Update UL/DL transfer descriptors in message ring. 2) Define message set for pipe/sleep protocol. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: shared memory protocolM Chetan Kumar
1) Defines messaging protocol for handling Transfer Descriptor in both UL/DL direction. 2) Ring buffer management. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: power managementM Chetan Kumar
Implements state machine to handle host & device sleep. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: encode or decode datagramM Chetan Kumar
1) Encode UL packet into datagram. 2) Decode DL datagram and route it to network layer. 3) Supports credit based flow control. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: multiplex IP sessionsM Chetan Kumar
Establish IP session between host-device & session management. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: bottom halfM Chetan Kumar
1) Bottom half(tasklet) for IRQ and task processing. 2) Tasks are processed asynchronous and synchronously. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: wwan port control deviceM Chetan Kumar
Implements wwan port for MBIM & AT protocol communication Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: channel configurationM Chetan Kumar
Defines pipes & channel configurations like channel type, pipe mappings, No. of transfer descriptors and transfer buffer size etc. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: shared memory I/O operationsM Chetan Kumar
1) Binds logical channel between host-device for communication. 2) Implements device specific(Char/Net) IO operations. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: shared memory IPC interfaceM Chetan Kumar
1) Initializes shared memory for host-device communication. 2) Allocate resources required for control & data operations. 3) Transfers the Device IRQ to IPC execution thread. 4) Defines the timer cbs for async events. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: mmio scratchpadM Chetan Kumar
1) Initializes the Scratchpad region for Host-Device communication. 2) Exposes device capabilities like chip info and device execution stages. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: irq handlingM Chetan Kumar
1) Request interrupt vector, frees allocated resource. 2) Registers IRQ handler. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-13net: iosm: entry pointM Chetan Kumar
1) Register IOSM driver with kernel to manage Intel WWAN PCIe device(PCI_VENDOR_ID_INTEL, INTEL_CP_DEVICE_7560_ID). 2) Exposes the EP PCIe device capability to Host PCIe core. 3) Initializes PCIe EP configuration and defines PCIe driver probe, remove and power management OPS. 4) Allocate and map(dma) skb memory for data communication from device to kernel and vice versa. Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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