pci: layerscape: Fix the LUT and msi-map mismatch issue
In the current code, it doesn't reset the cursors of LUT entry and
StreamID at the beginning of the fixup, so it can result in LUT entry
setup and msi-map mismatch and LUT entries and StreamID leaking
when reload and fixup the DTB.
This patch move the initialization of LUT entry and StreamID cursors
to the beginning of the fixup to resolve the issues.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/drivers/pci/pcie_layerscape_fixup.c b/drivers/pci/pcie_layerscape_fixup.c
index a58e7a3..8a2a0e1 100644
--- a/drivers/pci/pcie_layerscape_fixup.c
+++ b/drivers/pci/pcie_layerscape_fixup.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright 2017-2020 NXP
+ * Copyright 2017-2021 NXP
* Copyright 2014-2015 Freescale Semiconductor, Inc.
* Layerscape PCIe driver
*/
@@ -24,6 +24,8 @@
#include "pcie_layerscape.h"
#include "pcie_layerscape_fixup_common.h"
+int next_stream_id;
+
static int fdt_pcie_get_nodeoffset(void *blob, struct ls_pcie_rc *pcie_rc)
{
int nodeoffset;
@@ -607,6 +609,9 @@
{
ft_pcie_ep_fix(blob, pcie_rc);
ft_pcie_rc_fix(blob, pcie_rc);
+
+ pcie_rc->stream_id_cur = 0;
+ pcie_rc->next_lut_index = 0;
}
/* Fixup Kernel DT for PCIe */
@@ -618,6 +623,7 @@
ft_pcie_ls_setup(blob, pcie_rc);
#if defined(CONFIG_FSL_LSCH3) || defined(CONFIG_FSL_LSCH2)
+ next_stream_id = FSL_PEX_STREAM_ID_START;
fdt_fixup_pcie_ls(blob);
#endif
}