1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright 2017 NXP Semiconductor, Inc.
4  *
5  */
6 #ifndef __FSL_STREAM_ID_H
7 #define __FSL_STREAM_ID_H
8 
9 /*
10  * Stream IDs on Chassis-2 (for example ls1043a, ls1046a, ls1012) devices
11  * are not hardwired and are programmed by sw.  There are a limited number
12  * of stream IDs available, and the partitioning of them is scenario
13  * dependent. This header defines the partitioning between legacy, PCI,
14  * and DPAA1 devices.
15  *
16  * This partitioning can be customized in this file depending
17  * on the specific hardware config:
18  *
19  *  -non-PCI legacy, platform devices (USB, SDHC, SATA, DMA, QE etc)
20  *     -all legacy devices get a unique stream ID assigned and programmed in
21  *      their AMQR registers by u-boot
22  *
23  *  -PCIe
24  *     -there is a range of stream IDs set aside for PCI in this
25  *      file.  U-boot will scan the PCI bus and for each device discovered:
26  *         -allocate a streamID
27  *         -set a PEXn LUT table entry mapping 'requester ID' to 'stream ID'
28  *         -set a msi-map entry in the PEXn controller node in the
29  *          device tree (see Documentation/devicetree/bindings/pci/pci-msi.txt
30  *          for more info on the msi-map definition)
31  *         -set a iommu-map entry in the PEXn controller node in the
32  *          device tree (see Documentation/devicetree/bindings/pci/pci-iommu.txt
33  *          for more info on the iommu-map definition)
34  *
35  *  -DPAA1
36  *     - Stream ids for DPAA1 use are reserved for future usecase.
37  *
38  */
39 
40 
41 #define FSL_INVALID_STREAM_ID		0
42 
43 /* legacy devices */
44 #define FSL_USB1_STREAM_ID		1
45 #define FSL_USB2_STREAM_ID		2
46 #define FSL_USB3_STREAM_ID		3
47 #define FSL_SDHC_STREAM_ID		4
48 #define FSL_SATA_STREAM_ID		5
49 #define FSL_QE_STREAM_ID		6
50 #define FSL_QDMA_STREAM_ID		7
51 #define FSL_EDMA_STREAM_ID		8
52 #define FSL_ETR_STREAM_ID		9
53 
54 /* PCI - programmed in PEXn_LUT */
55 #define FSL_PEX_STREAM_ID_START		11
56 #define FSL_PEX_STREAM_ID_END		26
57 
58 /* DPAA1 - Stream-ID that can be programmed in DPAA1 h/w */
59 #define FSL_DPAA1_STREAM_ID_START	27
60 #define FSL_DPAA1_STREAM_ID_END		63
61 
62 #endif
63