[PATCH v4 2/4] pci: layerscape: Move streamId allocation to common device tree fixup

[Wasim Khan]

Move streamId allocation to layerscape common device tree fixup.
Calculate streamId based on SoC variant.

Signed-off-by: Wasim Khan <wasim.khan at nxp.com>
---
Changes in v4:None

Changes in v3:None

Changes in v2:None

 drivers/pci/pcie_layerscape_fixup.c        | 15 +++------------
 drivers/pci/pcie_layerscape_fixup_common.c | 24 ++++++++++++++++++++++++
 drivers/pci/pcie_layerscape_fixup_common.h |  1 +
 drivers/pci/pcie_layerscape_gen4_fixup.c   | 17 +++--------------
 4 files changed, 31 insertions(+), 26 deletions(-)

diff --git a/drivers/pci/pcie_layerscape_fixup.c b/drivers/pci/pcie_layerscape_fixup.c
index e77404c..56de6d9 100644
--- a/drivers/pci/pcie_layerscape_fixup.c
+++ b/drivers/pci/pcie_layerscape_fixup.c
@@ -31,17 +31,6 @@ static int ls_pcie_next_lut_index(struct ls_pcie *pcie)
 		return -ENOSPC;  /* LUT is full */
 }
 
-/* returns the next available streamid for pcie, -errno if failed */
-static int ls_pcie_next_streamid(void)
-{
-	static int next_stream_id = FSL_PEX_STREAM_ID_START;
-
-	if (next_stream_id > FSL_PEX_STREAM_ID_END)
-		return -EINVAL;
-
-	return next_stream_id++;
-}
-
 static void lut_writel(struct ls_pcie *pcie, unsigned int value,
 		       unsigned int offset)
 {
@@ -192,10 +181,12 @@ static void fdt_fixup_pcie_ls(void *blob)
 			bus = bus->parent;
 		pcie = dev_get_priv(bus);
 
-		streamid = ls_pcie_next_streamid();
+		streamid = pcie_next_streamid(pcie->stream_id_cur, pcie->idx);
 		if (streamid < 0) {
 			debug("ERROR: no stream ids free\n");
 			continue;
+		} else {
+			pcie->stream_id_cur++;
 		}
 
 		index = ls_pcie_next_lut_index(pcie);
diff --git a/drivers/pci/pcie_layerscape_fixup_common.c b/drivers/pci/pcie_layerscape_fixup_common.c
index b32236e..828dfff 100644
--- a/drivers/pci/pcie_layerscape_fixup_common.c
+++ b/drivers/pci/pcie_layerscape_fixup_common.c
@@ -25,3 +25,27 @@ void ft_pci_setup(void *blob, bd_t *bd)
 #endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */
 		ft_pci_setup_ls(blob, bd);
 }
+
+#if defined(CONFIG_FSL_LAYERSCAPE)
+#ifdef CONFIG_ARCH_LX2160A
+/* returns the next available streamid for pcie, -errno if failed */
+int pcie_next_streamid(int currentid, int idx)
+{
+	if (currentid > FSL_PEX_STREAM_ID_END)
+		return -EINVAL;
+
+	return currentid | ((idx + 1) << 11);
+}
+#else
+/* returns the next available streamid for pcie, -errno if failed */
+int pcie_next_streamid(int currentid, int idx)
+{
+	static int next_stream_id = FSL_PEX_STREAM_ID_START;
+
+	if (next_stream_id > FSL_PEX_STREAM_ID_END)
+		return -EINVAL;
+
+	return next_stream_id++;
+}
+#endif
+#endif /* CONFIG_FSL_LAYERSCAPE */
diff --git a/drivers/pci/pcie_layerscape_fixup_common.h b/drivers/pci/pcie_layerscape_fixup_common.h
index be729b6..ecf4f44 100644
--- a/drivers/pci/pcie_layerscape_fixup_common.h
+++ b/drivers/pci/pcie_layerscape_fixup_common.h
@@ -16,5 +16,6 @@ void ft_pci_setup_ls(void *blob, bd_t *bd);
 #ifdef CONFIG_PCIE_LAYERSCAPE_GEN4
 void ft_pci_setup_ls_gen4(void *blob, bd_t *bd);
 #endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */
+int pcie_next_streamid(int currentid, int id);
 
 #endif //_PCIE_LAYERSCAPE_FIXUP_COMMON_H_
diff --git a/drivers/pci/pcie_layerscape_gen4_fixup.c b/drivers/pci/pcie_layerscape_gen4_fixup.c
index b99ab0f..bfe197e 100644
--- a/drivers/pci/pcie_layerscape_gen4_fixup.c
+++ b/drivers/pci/pcie_layerscape_gen4_fixup.c
@@ -33,19 +33,6 @@ static int ls_pcie_g4_next_lut_index(struct ls_pcie_g4 *pcie)
 	return -ENOSPC;  /* LUT is full */
 }
 
-/* returns the next available streamid for pcie, -errno if failed */
-static int ls_pcie_g4_next_streamid(struct ls_pcie_g4 *pcie)
-{
-	int stream_id = pcie->stream_id_cur;
-
-	if (stream_id > FSL_PEX_STREAM_ID_END)
-		return -EINVAL;
-
-	pcie->stream_id_cur++;
-
-	return stream_id | ((pcie->idx + 1) << 11);
-}
-
 /*
  * Program a single LUT entry
  */
@@ -162,10 +149,12 @@ static void fdt_fixup_pcie_ls_gen4(void *blob)
 			bus = bus->parent;
 		pcie = dev_get_priv(bus);
 
-		streamid = ls_pcie_g4_next_streamid(pcie);
+		streamid = pcie_next_streamid(pcie->stream_id_cur, pcie->idx);
 		if (streamid < 0) {
 			debug("ERROR: no stream ids free\n");
 			continue;
+		} else {
+			pcie->stream_id_cur++;
 		}
 
 		index = ls_pcie_g4_next_lut_index(pcie);
-- 
2.7.4