1 /* 2 * Copyright 2014 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 */ 7 #ifndef __FSL_STREAM_ID_H 8 #define __FSL_STREAM_ID_H 9 10 /* 11 * Stream IDs on NXP Chassis-3 (for example ls2080a, ls1088a, ls2088a) 12 * devices are not hardwired and are programmed by sw. There are a limited 13 * number of stream IDs available, and the partitioning of them is scenario 14 * dependent. This header defines the partitioning between legacy, 15 * PCI, and DPAA2 devices. 16 * 17 * This partitioning can be customized in this file depending 18 * on the specific hardware config: 19 * 20 * -non-PCI legacy, platform devices (USB, SD/MMC, SATA, DMA) 21 * -all legacy devices get a unique stream ID assigned and programmed in 22 * their AMQR registers by u-boot 23 * 24 * -PCIe 25 * -there is a range of stream IDs set aside for PCI in this 26 * file. U-boot will scan the PCI bus and for each device discovered: 27 * -allocate a streamID 28 * -set a PEXn LUT table entry mapping 'requester ID' to 'stream ID' 29 * -set a msi-map entry in the PEXn controller node in the 30 * device tree (see Documentation/devicetree/bindings/pci/pci-msi.txt 31 * for more info on the msi-map definition) 32 * -set a iommu-map entry in the PEXn controller node in the 33 * device tree (see Documentation/devicetree/bindings/pci/pci-iommu.txt 34 * for more info on the iommu-map definition) 35 * 36 * -DPAA2 37 * -u-boot will allocate a range of stream IDs to be used by the Management 38 * Complex for containers and will set these values in the MC DPC image. 39 * -the MC is responsible for allocating and setting up 'isolation context 40 * IDs (ICIDs) based on the allocated stream IDs for all DPAA2 devices. 41 * 42 * On Chasis-3 SoCs stream IDs are programmed in AMQ registers (32-bits) for 43 * each of the different bus masters. The relationship between 44 * the AMQ registers and stream IDs is defined in the table below: 45 * AMQ bit streamID bit 46 * --------------------------- 47 * PL[18] 9 // privilege bit 48 * BMT[17] 8 // bypass translation 49 * VA[16] 7 // reserved 50 * [15] - // unused 51 * ICID[14:7] - // unused 52 * ICID[6:0] 6-0 // isolation context id 53 * ---------------------------- 54 * 55 */ 56 57 #define AMQ_PL_MASK (0x1 << 18) /* priviledge bit */ 58 #define AMQ_BMT_MASK (0x1 << 17) /* bypass bit */ 59 60 #define FSL_INVALID_STREAM_ID 0 61 62 #define FSL_BYPASS_AMQ (AMQ_PL_MASK | AMQ_BMT_MASK) 63 64 /* legacy devices */ 65 #define FSL_USB1_STREAM_ID 1 66 #define FSL_USB2_STREAM_ID 2 67 #define FSL_SDMMC_STREAM_ID 3 68 #define FSL_SATA1_STREAM_ID 4 69 #define FSL_SATA2_STREAM_ID 5 70 #define FSL_DMA_STREAM_ID 6 71 72 /* PCI - programmed in PEXn_LUT */ 73 #define FSL_PEX_STREAM_ID_START 7 74 #define FSL_PEX_STREAM_ID_END 22 75 76 /* DPAA2 - set in MC DPC and alloced by MC */ 77 #define FSL_DPAA2_STREAM_ID_START 23 78 #define FSL_DPAA2_STREAM_ID_END 63 79 80 #endif 81