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 #define FSL_DEBUG_STREAM_ID 10 54 55 /* PCI - programmed in PEXn_LUT */ 56 #define FSL_PEX_STREAM_ID_START 11 57 #define FSL_PEX_STREAM_ID_END 26 58 59 /* DPAA1 - Stream-ID that can be programmed in DPAA1 h/w */ 60 #define FSL_DPAA1_STREAM_ID_START 27 61 #define FSL_DPAA1_STREAM_ID_END 63 62 63 #endif 64