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https://github.com/AsahiLinux/u-boot
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575d741516
Introduce accessor iocsr_get_config_table() for retrieving IOCSR config tables. This patch is again trimming down the namespace polution. The IOCSR config tables are used only by scan manager, they are generated by qts and are board specific. Before this patch, the approach to use these tables in scan manager was to define an extern variable to silence the compiler and compile board-specific iocsr_config.c into U-Boot which defined those extern variables. Furthermore, since these are tables and the scan manager needs to know the size of those tables, iocsr_config.h is included build-wide. This patch wraps all this into a single accessor which takes the scan chain ID and returns pointer to the table and it's size. All this is wrapped in wrap_iocsr_config.c board-specific file. The file includes the iocsr_config.c (!) to access the original tables and transitively iocsr_config.h . It is thus no longer necessary to include iocsr_config.h build-wide and the namespace polution is trimmed some more. Signed-off-by: Marek Vasut <marex@denx.de>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* Copyright (C) 2013 Altera Corporation <www.altera.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SCAN_MANAGER_H_
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#define _SCAN_MANAGER_H_
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struct socfpga_scan_manager {
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u32 stat;
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u32 en;
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u32 padding[2];
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u32 fifo_single_byte;
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u32 fifo_double_byte;
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u32 fifo_triple_byte;
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u32 fifo_quad_byte;
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};
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/*
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* Shift count to get number of IO scan chain data in granularity
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* of 128-bit ( N / 128 )
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*/
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#define IO_SCAN_CHAIN_128BIT_SHIFT 7
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/*
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* Mask to get residual IO scan chain data in
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* granularity of 128-bit ( N mod 128 )
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*/
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#define IO_SCAN_CHAIN_128BIT_MASK 0x7F
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/*
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* Shift count to get number of IO scan chain
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* data in granularity of 32-bit ( N / 32 )
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*/
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#define IO_SCAN_CHAIN_32BIT_SHIFT 5
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/*
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* Mask to get residual IO scan chain data in
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* granularity of 32-bit ( N mod 32 )
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*/
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#define IO_SCAN_CHAIN_32BIT_MASK 0x1F
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/* Byte mask */
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#define IO_SCAN_CHAIN_BYTE_MASK 0xFF
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/* 24-bits (3 bytes) IO scan chain payload definition */
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#define IO_SCAN_CHAIN_PAYLOAD_24BIT 24
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/*
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* Maximum length of TDI_TDO packet payload is 128 bits,
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* represented by (length - 1) in TDI_TDO header
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*/
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#define TDI_TDO_MAX_PAYLOAD 127
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/* TDI_TDO packet header for IO scan chain program */
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#define TDI_TDO_HEADER_FIRST_BYTE 0x80
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/* Position of second command byte for TDI_TDO packet */
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#define TDI_TDO_HEADER_SECOND_BYTE_SHIFT 8
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/*
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* Maximum polling loop to wait for IO scan chain engine
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* becomes idle to prevent infinite loop
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*/
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#define SCAN_MAX_DELAY 100
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#define SCANMGR_STAT_ACTIVE_GET(x) (((x) & 0x80000000) >> 31)
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#define SCANMGR_STAT_WFIFOCNT_GET(x) (((x) & 0x70000000) >> 28)
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int scan_mgr_configure_iocsr(void);
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int iocsr_get_config_table(const unsigned int chain_id,
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const unsigned long **table,
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unsigned int *table_len);
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#endif /* _SCAN_MANAGER_H_ */
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