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Diffstat (limited to 'arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h')
| -rw-r--r-- | arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h new file mode 100644 index 0000000000..d7d527d8f4 --- /dev/null +++ b/arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h @@ -0,0 +1,80 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + * + */ +#ifndef __FSL_STREAM_ID_H +#define __FSL_STREAM_ID_H + +/* + * Stream IDs on NXP Chassis-3 (for example ls2080a, ls1088a, ls2088a) + * 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) + * -set a iommu-map entry in the PEXn controller node in the + * device tree (see Documentation/devicetree/bindings/pci/pci-iommu.txt + * for more info on the iommu-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 Chasis-3 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 |