From: Vaibhav Jain Date: Tue, 17 Apr 2018 05:11:02 +0000 (+0530) Subject: cxl: Configure PSL to not use APC virtual machines X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9a6d2022bacd8fca0be6297459a02dfd28dad6ba;p=openwrt%2Fstaging%2Fblogic.git cxl: Configure PSL to not use APC virtual machines APC virtual machines arent used on POWER-9 chips and are already disabled in on-chip CAPP. They also need to be disabled on the PSL via 'PSL Data Send Control Register' by setting bit(47). This forces the PSL to send commands to CAPP with queue.id == 0. Fixes: 5632874311db ("cxl: Add support for POWER9 DD2") Cc: stable@vger.kernel.org # v4.15+ Signed-off-by: Vaibhav Jain Acked-by: Andrew Donnellan Reviewed-by: Alastair D'Silva Reviewed-by: Christophe Lombard Signed-off-by: Michael Ellerman --- diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 83f1d08058fc..2e8b187956bc 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -514,9 +514,9 @@ static int init_implementation_adapter_regs_psl9(struct cxl *adapter, cxl_p1_write(adapter, CXL_PSL9_FIR_CNTL, psl_fircntl); /* Setup the PSL to transmit packets on the PCIe before the - * CAPP is enabled + * CAPP is enabled. Make sure that CAPP virtual machines are disabled */ - cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000002A10ULL); + cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000012A10ULL); /* * A response to an ASB_Notify request is returned by the