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/*
* 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
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