armv8/fsl-lsch3: partition stream IDs

Stream IDs on ls2085a 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.

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-fsl-lsch3/ls2085a_stream_id.h b/arch/arm/include/asm/arch-fsl-lsch3/ls2085a_stream_id.h
new file mode 100644
index 0000000..5c94530
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/ls2085a_stream_id.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+#ifndef __FSL_STREAM_ID_H
+#define __FSL_STREAM_ID_H
+
+/* Stream IDs on ls2085a 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 partitiong can be customized in this file depending
+ * on the specific hardware config-- e.g. perhaps not all
+ * PEX controllers are in use.
+ *
+ * On LS2085 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
+ *          BMT[17]         8
+ *           VA[16]         7
+ *             [15]         -
+ *         ICID[14:7]       -
+ *         ICID[6:0]        6-0
+ *     ----------------------------
+ */
+
+#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 by OS */
+/*   4 IDs per controller */
+#define FSL_PEX1_STREAM_ID_START	7
+#define FSL_PEX1_STREAM_ID_END		10
+#define FSL_PEX2_STREAM_ID_START	11
+#define FSL_PEX2_STREAM_ID_END		14
+#define FSL_PEX3_STREAM_ID_START	15
+#define FSL_PEX3_STREAM_ID_END		18
+#define FSL_PEX4_STREAM_ID_START	19
+#define FSL_PEX4_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