armv8: fsl-lsch3: rename ls2080a_stream_id.h to stream_id_lsch3.h

The stream ID allocation for Chasis 3.0 devices can be shared among
LS1088, LS2088 and LS2080.

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

1 files changed, 77 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h
new file mode 100644
index 0000000000..ee28323f8c
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+#ifndef __FSL_STREAM_ID_H
+#define __FSL_STREAM_ID_H
+
+/*
+ * Stream IDs on ls2080a 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 DPAA2 devices.
+ *
+ * This partitioning can be customized in this file depending
+ * on the specific hardware config:
+ *
+ *  -non-PCI legacy, platform devices (USB, SD/MMC, SATA, DMA)
+ *     -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)
+ *
+ *  -DPAA2
+ *     -u-boot will allocate a range of stream IDs to be used by the Management
+ *      Complex for containers and will set these values in the MC DPC image.
+ *     -the MC is responsible for allocating and setting up 'isolation context
+ *      IDs (ICIDs) based on the allocated stream IDs for all DPAA2 devices.
+ *
+ * On ls2080a SoCs stream IDs are programmed in AMQ registers (32-bits) for
+ * each of the different bus masters.  The relationship between
+ * the AMQ registers and stream IDs is defined in the table below:
+ *          AMQ bit    streamID bit
+ *      ---------------------------
+ *           PL[18]         9        // privilege bit
+ *          BMT[17]         8        // bypass translation
+ *           VA[16]         7        // reserved
+ *             [15]         -        // unused
+ *         ICID[14:7]       -        // unused
+ *         ICID[6:0]        6-0      // isolation context id
+ *     ----------------------------
+ *
+ */
+
+#define AMQ_PL_MASK			(0x1 << 18)   /* priviledge bit */
+#define AMQ_BMT_MASK			(0x1 << 17)   /* bypass bit */
+
+#define FSL_INVALID_STREAM_ID		0
+
+#define FSL_BYPASS_AMQ			(AMQ_PL_MASK | AMQ_BMT_MASK)
+
+/* legacy devices */
+#define FSL_USB1_STREAM_ID		1
+#define FSL_USB2_STREAM_ID		2
+#define FSL_SDMMC_STREAM_ID		3
+#define FSL_SATA1_STREAM_ID		4
+#define FSL_SATA2_STREAM_ID		5
+#define FSL_DMA_STREAM_ID		6
+
+/* PCI - programmed in PEXn_LUT */
+#define FSL_PEX_STREAM_ID_START		7
+#define FSL_PEX_STREAM_ID_END		22
+
+/* DPAA2 - set in MC DPC and alloced by MC */
+#define FSL_DPAA2_STREAM_ID_START	23
+#define FSL_DPAA2_STREAM_ID_END		63
+
+#endif