arvm8: pcie-layerscape: Define stream-ids for Layerscape Chassis-2

Layerscape Chassis-2 have PCIe device, some platform devices and
DPAA1 devices which will use stream-ids for iommu level isolation
as they are behind SMMU.

This patch defines the stream-ids for Chassis-2 devices. DPAA1 is
reserved for future use.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch2.h
new file mode 100644
index 0000000000..b326fe5c40
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch2.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 NXP Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+#ifndef __FSL_STREAM_ID_H
+#define __FSL_STREAM_ID_H
+
+/*
+ * Stream IDs on Chassis-2 (for example ls1043a, ls1046a, ls1012) devices
+ * are not hardwired and are programmed by sw.  There are a limited number
+ * of stream IDs available, and the partitioning of them is scenario
+ * dependent. This header defines the partitioning between legacy, PCI,
+ * and DPAA1 devices.
+ *
+ * This partitioning can be customized in this file depending
+ * on the specific hardware config:
+ *
+ *  -non-PCI legacy, platform devices (USB, SDHC, SATA, DMA, QE etc)
+ *     -all legacy devices get a unique stream ID assigned and programmed in
+ *      their AMQR registers by u-boot
+ *
+ *  -PCIe
+ *     -there is a range of stream IDs set aside for PCI in this
+ *      file.  U-boot will scan the PCI bus and for each device discovered:
+ *         -allocate a streamID
+ *         -set a PEXn LUT table entry mapping 'requester ID' to 'stream ID'
+ *         -set a msi-map entry in the PEXn controller node in the
+ *          device tree (see Documentation/devicetree/bindings/pci/pci-msi.txt
+ *          for more info on the msi-map definition)
+ *         -set a iommu-map entry in the PEXn controller node in the
+ *          device tree (see Documentation/devicetree/bindings/pci/pci-iommu.txt
+ *          for more info on the iommu-map definition)
+ *
+ *  -DPAA1
+ *     - Stream ids for DPAA1 use are reserved for future usecase.
+ *
+ */
+
+
+#define FSL_INVALID_STREAM_ID		0
+
+/* legacy devices */
+#define FSL_USB1_STREAM_ID		1
+#define FSL_USB2_STREAM_ID		2
+#define FSL_USB3_STREAM_ID		3
+#define FSL_SDHC_STREAM_ID		4
+#define FSL_SATA_STREAM_ID		5
+#define FSL_QE_STREAM_ID		6
+#define FSL_QDMA_STREAM_ID		7
+#define FSL_EDMA_STREAM_ID		8
+#define FSL_ETR_STREAM_ID		9
+
+/* PCI - programmed in PEXn_LUT */
+#define FSL_PEX_STREAM_ID_START		11
+#define FSL_PEX_STREAM_ID_END		26
+
+/* DPAA1 - Stream-ID that can be programmed in DPAA1 h/w */
+#define FSL_DPAA1_STREAM_ID_START	27
+#define FSL_DPAA1_STREAM_ID_END		63
+
+#endif