cxl: Set psl_fir_cntl to production environment value

Switch the setting of psl_fir_cntl from debug to production
environment recommended value. It mostly affects the PSL behavior when
an error is raised in psl_fir1/2.

Tested with cxlflash.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 1d0347c36e6dcf324ed5a320d5138a003e148134..6f0c4ac4b6498991913647b0d70b2d4805870f0b 100644 (file)
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -379,7 +379,7 @@ static int calc_capp_routing(struct pci_dev *dev, u64 *chipid, u64 *capp_unit_id
 
 static int init_implementation_adapter_psl_regs(struct cxl *adapter, struct pci_dev *dev)
 {
-       u64 psl_dsnctl;
+       u64 psl_dsnctl, psl_fircntl;
        u64 chipid;
        u64 capp_unit_id;
        int rc;
@@ -398,8 +398,11 @@ static int init_implementation_adapter_psl_regs(struct cxl *adapter, struct pci_
        cxl_p1_write(adapter, CXL_PSL_RESLCKTO, 0x20000000200ULL);
        /* snoop write mask */
        cxl_p1_write(adapter, CXL_PSL_SNWRALLOC, 0x00000000FFFFFFFFULL);
-       /* set fir_accum */
-       cxl_p1_write(adapter, CXL_PSL_FIR_CNTL, 0x0800000000000000ULL);
+       /* set fir_cntl to recommended value for production env */
+       psl_fircntl = (0x2ULL << (63-3)); /* ce_report */
+       psl_fircntl |= (0x1ULL << (63-6)); /* FIR_report */
+       psl_fircntl |= 0x1ULL; /* ce_thresh */
+       cxl_p1_write(adapter, CXL_PSL_FIR_CNTL, psl_fircntl);
        /* for debugging with trace arrays */
        cxl_p1_write(adapter, CXL_PSL_TRACE, 0x0000FF7C00000000ULL);