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RTEMS
5.1
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RTEMS
5.1
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Typedefs | |
| typedef enum ALT_ACP_ID_OUTPUT_ID_e | ALT_ACP_ID_OUTPUT_ID_t |
| typedef enum ALT_ACP_ID_MAP_PAGE_e | ALT_ACP_ID_MAP_PAGE_t |
Enumerations | |
| enum | ALT_ACP_ID_OUTPUT_ID_e { ALT_ACP_ID_OUT_FIXED_ID_2 = 2, ALT_ACP_ID_OUT_DYNAM_ID_3 = 3, ALT_ACP_ID_OUT_DYNAM_ID_4 = 4, ALT_ACP_ID_OUT_DYNAM_ID_5 = 5, ALT_ACP_ID_OUT_DYNAM_ID_6 = 6, ALT_ACP_ID_OUT_DYNAM_ID_7 = 7 } |
| enum | ALT_ACP_ID_MAP_PAGE_e { ALT_ACP_ID_MAP_PAGE_0 = 0, ALT_ACP_ID_MAP_PAGE_1 = 1, ALT_ACP_ID_MAP_PAGE_2 = 2, ALT_ACP_ID_MAP_PAGE_3 = 3 } |
External Master ID Macros | |
These macros define the HPS external master identifiers that are 12-bit input IDs to the ACP ID Mapper. Some of the masters have a range of identifier values assigned to them and are distinguished by taking a (var)</em> argument. | |
| #define | ALT_ACP_ID_MAP_MASTER_ID_MASK 0xfff |
| #define | ALT_ACP_ID_MAP_MASTER_ID_L2M0(var) (0x00000002 | (0x000007f8 & (var))) |
| #define | ALT_ACP_ID_MAP_MASTER_ID_DMA(var) (0x00000001 | (0x00000078 & (var))) |
| #define | ALT_ACP_ID_MAP_MASTER_ID_EMAC0(var) (0x00000801 | (0x00000878 & (var))) |
| #define | ALT_ACP_ID_MAP_MASTER_ID_EMAC1(var) (0x00000802 | (0x00000878 & (var))) |
| #define | ALT_ACP_ID_MAP_MASTER_ID_USB0 0x00000803 |
| #define | ALT_ACP_ID_MAP_MASTER_ID_USB1 0x00000806 |
| #define | ALT_ACP_ID_MAP_MASTER_ID_NAND(var) (0x00000804 | (0x00000ff8 & (var))) |
| #define | ALT_ACP_ID_MAP_MASTER_ID_TMC 0x00000800 |
| #define | ALT_ACP_ID_MAP_MASTER_ID_DAP 0x00000004 |
| #define | ALT_ACP_ID_MAP_MASTER_ID_SDMMC 0x00000805 |
| #define | ALT_ACP_ID_MAP_MASTER_ID_F2H(var) (0x00000000 | (0x000007f8 & (var))) |
This API provides management of the ACP ID Mapper that enables data coherent access to the MPU address space by external masters. The set of external masters include L3 master peripherals and FPGA soft IP.
The Accelerator Coherency Port (ACP) allows peripherals - including FPGA based soft IP - to maintain data coherency with the Cortex-A9 MPCore processors and the Snoop Control Unit (SCU).
The ACP supports up to six masters. However, soft IP implemented in the FPGA fabric can have a larger number of masters that need to access the ACP. The ACP ID Mapper expands the number of masters able to access the ACP. The ACP ID Mapper is situated between the interconnect and the ACP of the MPU subsystem. It has the following characteristics:
The function of the ACP ID Mapper is to map 12-bit Advanced Microcontroller Bus Architecture (AMBA) Advanced eXtensible Interface (AXI) IDs (input identifiers) from the Level 3 (L3) interconnect to 3-bit AXI IDs (output identifiers) required by the ACP slave port.
The ACP ID Mapper supports the two ID mapping modes:
Out of the total of eight ACP output ID values, only six are available to the ACP ID Mapper for remapping. The first two output IDs (0 and 1) are dedicated to the Cortex-A9 processor cores in the MPU subsystem, leaving the last six output IDs (2-7) available to the ACP ID mapper. Output IDs 2-6 support fixed and dynamic modes of operation while output ID 7 supports dynamic mode only.
The following table summarizes the usage of the 3-bit ouput ID values by the ACP ID Mapper and their settings at reset.
| Output ID | Usage | Reset State |
|---|---|---|
| 0 | Reserved for Cortex-A9 cores. | - |
| 1 | Reserved for Cortex-A9 cores. | - |
| 2 | Assigned to Debug Access Port (DAP) input ID at | Fixed |
| : | reset. After reset, can be reconfigured to either | DAP Master |
| : | fixed or dynamic. | : |
| 3 | Configurable fixed or dynamic mode. | Dynamic |
| 4 | Configurable fixed or dynamic mode. | Dynamic |
| 5 | Configurable fixed or dynamic mode. | Dynamic |
| 6 | Configurable fixed or dynamic mode. | Dynamic |
| 7 | Dynamic mode only. | Dynamic |
Where Output ID is the ACP ID Mapper output value that goes to the ACP.
Additionally, for masters unable to drive the AXI user sideband signals of incoming transactions, the ACP ID Mapper allows control of the AXI user sideband signal values. Not all masters drive these signals, so the ACP ID Mapper makes it possible to drive the 5-bit user sideband signal with either a default value (in dynamic mode) or specific values (in fixed mode).
The ACP ID Mapper can also control which 1 GiB coherent window into memory is accessed by masters of the L3 interconnect. Each fixed mapping can be assigned a different user sideband signal and memory window to allow specific settings for different masters. All dynamic mappings share a common user sideband signal and memory window setting. One important exception, however, is that the ACP ID mapper always allows user sideband signals from the FPGA-to-HPS bridge to pass through to the ACP regardless of the configured user sideband value associated with the ID.
The ACP ID Mapper has a 1 GiB address window into the MPU address space, which is by default a view into the bottom 1 GiB of SDRAM. The ACP ID Mapper allows transactions to be routed to different 1 GiB-sized memory views, called pages, in both dynamic and fixed modes.
See: Chapter 6: Cortex-A9 Microprocessor Unit Subsystem in Volume 3: Hard Processor System Technical Reference Manual of the Arria V or Cyclone V Device Handbook for a complete discussion of the operation and restrictions on the ACP and the ACP ID Mapper.
| #define ALT_ACP_ID_MAP_MASTER_ID_DAP 0x00000004 |
Master ID for Debug Access Port (DAP)
| #define ALT_ACP_ID_MAP_MASTER_ID_DMA | ( | var | ) | (0x00000001 | (0x00000078 & (var))) |
Master ID for DMA
| #define ALT_ACP_ID_MAP_MASTER_ID_EMAC0 | ( | var | ) | (0x00000801 | (0x00000878 & (var))) |
Master ID for EMAC0
| #define ALT_ACP_ID_MAP_MASTER_ID_EMAC1 | ( | var | ) | (0x00000802 | (0x00000878 & (var))) |
Master ID for EMAC1
| #define ALT_ACP_ID_MAP_MASTER_ID_F2H | ( | var | ) | (0x00000000 | (0x000007f8 & (var))) |
Master ID for FPGA to HPS (F2H) bridge - conduit for soft IP masters in FPGA fabric
| #define ALT_ACP_ID_MAP_MASTER_ID_L2M0 | ( | var | ) | (0x00000002 | (0x000007f8 & (var))) |
Master ID for L2M0
| #define ALT_ACP_ID_MAP_MASTER_ID_MASK 0xfff |
Bit mask for the relevant 12 bits of an external master ID
| #define ALT_ACP_ID_MAP_MASTER_ID_NAND | ( | var | ) | (0x00000804 | (0x00000ff8 & (var))) |
Master ID for NAND controller
| #define ALT_ACP_ID_MAP_MASTER_ID_SDMMC 0x00000805 |
Master ID for SD/MMC controller
| #define ALT_ACP_ID_MAP_MASTER_ID_TMC 0x00000800 |
Master ID for Embedded Trace Router (ETR)
| #define ALT_ACP_ID_MAP_MASTER_ID_USB0 0x00000803 |
Master ID for USB0
| #define ALT_ACP_ID_MAP_MASTER_ID_USB1 0x00000806 |
Master ID for USB1
| typedef enum ALT_ACP_ID_MAP_PAGE_e ALT_ACP_ID_MAP_PAGE_t |
This type defines the enumerations used to specify the 1 GiB page view of the MPU address space used by an ACP ID mapping configuration.
| typedef enum ALT_ACP_ID_OUTPUT_ID_e ALT_ACP_ID_OUTPUT_ID_t |
This type defines the enumerations 3-bit output ids to ACP ID mapper.
This type defines the enumerations used to specify the 1 GiB page view of the MPU address space used by an ACP ID mapping configuration.
This type defines the enumerations 3-bit output ids to ACP ID mapper.
| ALT_STATUS_CODE alt_acp_id_map_dynamic_read_options_set | ( | const ALT_ACP_ID_MAP_PAGE_t | page, |
| const uint32_t | aruser | ||
| ) |
Configure the page and user read sideband signal options that are applied to all read transactions that have their input IDs dynamically mapped.
| page | The MPU address space page view to use for the ACP window used by the dynamic ID tranlation mapping. |
| aruser | The 5-bit AXI ARUSER read user sideband signal value to use for masters unable to drive the AXI user sideband signals. Valid argument range is 0 <= aruser <= 31. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. One or more of the page and/or aruser arguments violates its range constraint. |
| ALT_E_BAD_ARG | The mid argument is not a valid master identifier. |
| ALT_STATUS_CODE alt_acp_id_map_dynamic_read_set | ( | const uint32_t | output_id | ) |
Configure the designated 3-bit output ID as an available identifier resource for use by the dynamic ID mapping function of the ACP ID Mapper for read transactions. The output_id value is available for dynamic assignment to external master read transaction IDs that do not have an explicit fixed ID mapping.
| output_id | The 3-bit output ID value designated as an available ID for use by the dynamic mapping function of the ACP ID Mapper. The ouput_id value is used exclusively for dynamic ID mapping until reconfigured as a fixed ID mapping by a call to alt_acp_id_map_fixed_read_set(). Valid argument values must be 0 <= output_id <= 7. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. |
| ALT_STATUS_CODE alt_acp_id_map_dynamic_write_options_set | ( | const ALT_ACP_ID_MAP_PAGE_t | page, |
| const uint32_t | awuser | ||
| ) |
Configure the page and user write sideband signal options that are applied to all write transactions that have their input IDs dynamically mapped.
| page | The MPU address space page view to use for the ACP window used by the dynamic ID tranlation mapping. |
| awuser | The 5-bit AXI AWUSER write user sideband signal value to use for masters unable to drive the AXI user sideband signals. Valid argument range is 0 <= aruser <= 31. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. One or more of the page and/or awuser arguments violates its range constraint. |
| ALT_E_BAD_ARG | The mid argument is not a valid master identifier. |
| ALT_STATUS_CODE alt_acp_id_map_dynamic_write_set | ( | const uint32_t | output_id | ) |
Configure the designated 3-bit output ID as an available identifier resource for use by the dynamic ID mapping function of the ACP ID Mapper for write transactions. The output_id value is available for dynamic assignment to external master write transaction IDs that do not have an explicit fixed ID mapping.
| output_id | The 3-bit output ID value designated as an available ID for use by the dynamic mapping function of the ACP ID Mapper. The ouput_id value is used exclusively for dynamic ID mapping until reconfigured as a fixed ID mapping by a call to alt_acp_id_map_fixed_write_set(). Valid argument values must be 0 <= output_id <= 7. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. |
| ALT_STATUS_CODE alt_acp_id_map_fixed_read_set | ( | const uint32_t | input_id, |
| const uint32_t | output_id, | ||
| const ALT_ACP_ID_MAP_PAGE_t | page, | ||
| const uint32_t | aruser | ||
| ) |
Configure a fixed ACP ID mapping for read transactions originating from external masters identified by input_id. The input_id value is translated to the specified 3-bit output_id required by the ACP slave port.
| input_id | The 12 bit external master ID originating read transactions targeted for ID translation. Valid argument range must be 0 <= output_id <= 4095. |
| output_id | The 3-bit output ID value the ACP ID Mapper translates read transactions identified by input_id to. This is the value propogated to the ACP slave port. Valid argument values must be 0 <= output_id <= 7. |
| page | The MPU address space page view to use for the ACP window used by the ID tranlation mapping. |
| aruser | The 5-bit AXI ARUSER read user sideband signal value to use for masters unable to drive the AXI user sideband signals. Valid argument range is 0 <= aruser <= 31. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. One or more of the input_id, and/or output_id arguments violates its range constraint. |
| ALT_E_BAD_ARG | The page argument is invalid. |
| ALT_STATUS_CODE alt_acp_id_map_fixed_write_set | ( | const uint32_t | input_id, |
| const uint32_t | output_id, | ||
| const ALT_ACP_ID_MAP_PAGE_t | page, | ||
| const uint32_t | awuser | ||
| ) |
Configure a fixed ACP ID mapping for write transactions originating from external masters identified by input_id. The input_id value is translated to the specified 3-bit output_id required by the ACP slave port.
| input_id | The 12 bit external master ID originating write transactions targeted for ID translation. Valid argument range must be 0 <= output_id <= 4095. |
| output_id | The 3-bit output ID value the ACP ID Mapper translates write transactions identified by input_id to. This is the value propogated to the ACP slave port. Valid argument values must be 0 <= output_id <= 7. |
| page | The MPU address space page view to use for the ACP window used by the ID tranlation mapping. |
| awuser | The 5-bit AXI AWUSER write user sideband signal value to use for masters unable to drive the AXI user sideband signals. Valid argument range is 0 <= awuser <= 31. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. One or more of the input_id, and/or output_id arguments violates its range constraint. |
| ALT_E_BAD_ARG | The page argument is invalid. |
| ALT_STATUS_CODE alt_acp_id_map_read_options_get | ( | const uint32_t | output_id, |
| bool * | fixed, | ||
| uint32_t * | input_id, | ||
| ALT_ACP_ID_MAP_PAGE_t * | page, | ||
| uint32_t * | aruser | ||
| ) |
Return the current read transaction mapping configuration used by the ACP ID Mapper for the specified output ID.
If output_id is configured as a fixed mapping then true is returned in the fixed output parameter and the translation mapping options configured for that output_id are returned in the other output parameters.
If output_id is configured as a dynamic mapping then false is returned in the fixed output parameter and the translation mapping options configured for all dynamically remapped output IDs are returned in the other output parameters.
| output_id | The output ID to return the mapping configuration for. 0 <= output_id <= 7. |
| fixed | [out] Set to true if the specified output_id is a fixed ID mapping configuration. Set to false if the mapping configuration is dynamic. |
| input_id | [out] The input ID of the external master that a fixed ID mapping is applied to for the output_id. If fixed is false then this output parameter is set to 0 and its value should be considered as not applicable. |
| page | [out] The MPU address space page view used by the mapping configuration. |
| aruser | [out] The 5-bit AXI ARUSER read user sideband signal value used by the mapping configuration when masters are unable to drive the AXI user sideband signals. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. The output_id argument violates its range constraint. |
| ALT_STATUS_CODE alt_acp_id_map_write_options_get | ( | const uint32_t | output_id, |
| bool * | fixed, | ||
| uint32_t * | input_id, | ||
| ALT_ACP_ID_MAP_PAGE_t * | page, | ||
| uint32_t * | awuser | ||
| ) |
Return the current write transaction mapping configuration used by the ACP ID Mapper for the specified output ID.
If output_id is configured as a fixed mapping then true is returned in the fixed output parameter and the translation mapping options configured for that output_id are returned in the other output parameters.
If output_id is configured as a dynamic mapping then false is returned in the fixed output parameter and the translation mapping options configured for all dynamically remapped output IDs are returned in the other output parameters.
| output_id | The output ID to return the mapping configuration for. 0 <= output_id <= 7. |
| fixed | [out] Set to true if the specified output_id is a fixed ID mapping configuration. Set to false if the mapping configuration is dynamic. |
| input_id | [out] The input ID of the external master that a fixed ID mapping is applied to for the output_id. If fixed is false then this output parameter is set to 0 and its value should be considered as not applicable. |
| page | [out] The MPU address space page view used by the mapping configuration. |
| awuser | [out] The 5-bit AXI AWUSER write user sideband signal value used by the mapping configuration when masters are unable to drive the AXI user sideband signals. |
| ALT_E_SUCCESS | The operation was succesful. |
| ALT_E_ERROR | The operation failed. |
| ALT_E_RESERVED | The argument value is reserved or unavailable. |
| ALT_E_ARG_RANGE | An argument violates a range constraint. The output_id argument violates its range constraint. |
1.8.15