+Cc: Lukas (I think he might be interested to look at this) On Fri, Aug 31, 2018 at 7:37 AM Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx> wrote: > > Posting below set of patches to support PCIe Hot Plug surprise removal, > and few defect fixes. > > This is NOT the normal PCIe Hot Plug support, whereby the user informs the > OS that a hot removal is desired, the OS does an orderly shutdown of the driver > on the device, special hot plug circuitry removes power from the PCIe slot, > then the user can remove the device and replace it > (where orderly bring-up of the device is done). > > With a true surprise removal (just removing HBA from a slot) > there is a possibility to get all kinds of PCIe transaction errors, > Below patches addresses those issues and remove HBA without bringing > the system down. > > For surprise removal detection, driver does a PCI > read of IOC's vendor field in IOC's PCI configuration space. > If the read value is 0xFFFFFFFF this indicates that the device > might have hot removed and the device will be removed from driver. > > V1 changes: > In Patch 0001 - unlock mutex, if active reset is in progress. > > Suganath Prabu S (7): > mpt3sas: Introduce mpt3sas_base_pci_device_is_unplugged > mpt3sas: Add HBA hot plug watchdog thread. > mpt3sas: Seperate out mpt3sas_wait_for_ioc_to_operational > mpt3sas: Introdude _scsih_get_shost_and_ioc. > mpt3sas: Fix Sync cache command failure during driver unload. > mpt3sas: Fix driver modifying NVRAM/persistent data. > mpt3sas: Bump driver version to 27.100.00.00. > > drivers/scsi/mpt3sas/mpt3sas_base.c | 248 ++++++++++++++++++++++++++----- > drivers/scsi/mpt3sas/mpt3sas_base.h | 17 ++- > drivers/scsi/mpt3sas/mpt3sas_config.c | 32 +--- > drivers/scsi/mpt3sas/mpt3sas_ctl.c | 26 +--- > drivers/scsi/mpt3sas/mpt3sas_scsih.c | 188 ++++++++++++++++++++--- > drivers/scsi/mpt3sas/mpt3sas_transport.c | 82 +++------- > 6 files changed, 414 insertions(+), 179 deletions(-) > > -- > 1.8.3.1 > -- With Best Regards, Andy Shevchenko
