1. 11 Apr, 2021 1 commit
  2. 15 Mar, 2021 1 commit
    • Stephane Grosjean's avatar
      RT-socket-CAN: Add support of PEAK PCAN-PCIe FD cards family · 88d10a9d
      Stephane Grosjean authored and Jan Kiszka's avatar Jan Kiszka committed
      
      
      This patch includes the driver that supports the CANFD interfaces of
      the PCAN-PCIe FD family. This driver is largely inspired by the peak_pciefd
      driver included in the kernel since version 4.12. Except for the
      differences related to the RTDM model, this driver differs from the
      socket-CAN driver by the following points:
      
      . CAN 2.0 a/b support only (CAN-FD not available in rt-socket-can)
      . all interrupts are required (or released) when loading (or unloading)
        the module, not when activating (or deactivating) the CAN interface as in
        the socket-CAN model. Only hardware interruptions are enabled (or
        disabled) when the rtcan interface is set up (or down).
      . This way of operating allows the usage of the MSI mode: if CONFIG_PCI_MSI
        is defined while CONFIG_XENO_OPT_SHIRQ is not, then the driver activates
        the MSI mode by default. The legacy INTA mode is used otherwise. In case
        CONFIG_PCI_MSI is defined, the parameter module "usemsi" allows to change
        this default behaviour: usemsi=0 selects INTA mode while usemsi=1 selects
        MSI mode.
      . the Tx flow is managed more easily (no echo management in rt-socket-can)
      Signed-off-by: default avatarStephane Grosjean <s.grosjean@peak-system.com>
      Tested-by: default avatarAndy Tannenbaum <trb@bioniklabs.com>
      [Jan: added to CI]
      Signed-off-by: Jan Kiszka's avatarJan Kiszka <jan.kiszka@siemens.com>
      88d10a9d