cxl: Rework the implementation of cxl_stop_trace_psl9()

Presently the PSL9 specific cxl_stop_trace_psl9() only stops the RX0
traces on the CXL adapter when a PSL error irq is triggered. The patch
updates the function to stop all the traces arrays and move them to
the FIN state. The implementation issues the mmio to TRACECFG register
to stop the trace array iff it already not in FIN state. This prevents
the issue of trace data being reset in case of multiple stop mmio
issued for a single trace array.

Also the patch does some refactoring of existing cxl_stop_trace_psl9()
and cxl_stop_trace_psl8() functions by moving them to 'pci.c' from
'debugfs.c' file and marking them as static.

Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 0 insertions, 22 deletions

diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c
index dbb9b58077f6..1643850d2302 100644
--- a/drivers/misc/cxl/debugfs.c
+++ b/drivers/misc/cxl/debugfs.c
@@ -15,28 +15,6 @@
 
 static struct dentry *cxl_debugfs;
 
-void cxl_stop_trace_psl9(struct cxl *adapter)
-{
-        /* Stop the trace */
-        cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x4480000000000000ULL);
-}
-
-void cxl_stop_trace_psl8(struct cxl *adapter)
-{
-        int slice;
-
-        /* Stop the trace */
-        cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL);
-
-        /* Stop the slice traces */
-        spin_lock(&adapter->afu_list_lock);
-        for (slice = 0; slice < adapter->slices; slice++) {
-                if (adapter->afu[slice])
-                        cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, 0x8000000000000000LL);
-        }
-        spin_unlock(&adapter->afu_list_lock);
-}
-
 /* Helpers to export CXL mmaped IO registers via debugfs */
 static int debugfs_io_u64_get(void *data, u64 *val)
 {