hw: Adds support for iDMA with configurable frontend(s) (desc64 and/or reg64)

Bender.lock

@@ -60,8 +60,8 @@ packages:
     dependencies:
     - common_cells
   axi_vga:
-    revision: 3718b9930f94a9eaad8ee50b4bccc71df0403084
-    version: 0.1.3
+    revision: 4d3e70d4f47bb74edc1ab68d99ffc02382e0fb9e
+    version: 0.1.4
     source:
       Git: https://github.com/pulp-platform/axi_vga.git
     dependencies:
@@ -85,8 +85,8 @@ packages:
     - common_cells
     - register_interface
   common_cells:
-    revision: 13f28aa0021fc22c0d01a12d618fda58d2c93239
-    version: 1.33.0
+    revision: c27bce39ebb2e6bae52f60960814a2afca7bd4cb
+    version: 1.37.0
     source:
       Git: https://github.com/pulp-platform/common_cells.git
     dependencies:
@@ -169,8 +169,8 @@ packages:
     - register_interface
     - tech_cells_generic
   register_interface:
-    revision: ae616e5a1ec2b41e72d200e5ab09c65e94aebd3d
-    version: 0.4.4
+    revision: 5daa85d164cf6b54ad061ea1e4c6f3624556e467
+    version: 0.4.5
     source:
       Git: https://github.com/pulp-platform/register_interface.git
     dependencies:
@@ -187,8 +187,8 @@ packages:
     - common_cells
     - tech_cells_generic
   serial_link:
-    revision: 5a25f5a71074f1ebb6de7b5280f2b16924bcc666
-    version: 1.1.1
+    revision: c55df03a1da06b00e567cf968b1b1a5f40c9f802
+    version: 1.1.2
     source:
       Git: https://github.com/pulp-platform/serial_link.git
     dependencies:

Bender.yml

@@ -26,7 +26,7 @@ dependencies:
   iDMA:                     { git: "https://github.com/pulp-platform/iDMA.git",                   version: 0.6.3  }
   irq_router:               { git: "https://github.com/pulp-platform/irq_router.git",             version: 0.0.1-beta.1 }
   opentitan_peripherals:    { git: "https://github.com/pulp-platform/opentitan_peripherals.git",  version: 0.4.0  }
-  register_interface:       { git: "https://github.com/pulp-platform/register_interface.git",     version: 0.4.4  }
+  register_interface:       { git: "https://github.com/pulp-platform/register_interface.git",     version: 0.4.5  }
   riscv-dbg:                { git: "https://github.com/pulp-platform/riscv-dbg.git",              version: 0.8.1  }
   serial_link:              { git: "https://github.com/pulp-platform/serial_link.git",            version: 1.1.1  }
   unbent:                   { git: "https://github.com/pulp-platform/unbent.git",                 version: 0.1.6  }

docs/um/arch.md

@@ -13,7 +13,7 @@ Cheshire is highly configurable; available features and resources depend on its
     - A boot ROM enabling boot from SD cards, SPI flash, or I2C EEPROM
     - A VGA display controller with built-in DMA
     - A fully-digital chip-to-chip or die-to-die serial link
-    - A high-throughput system DMA
+    - A high-throughput system DMA with configurable frontend
 
 - **Interconnect**:
     - A last level cache (LLC) configurable as a scratchpad memory (SPM) per-way
@@ -34,7 +34,9 @@ Cheshire's internal memory map is *static*. While device instantiation and layou
 +====================+===================+===============+======+=======+
 | 256K periphs @ AXI | Debug ROM         | `0x0000_0000` | 256K | E     |
 +--------------------+-------------------+---------------+------+-------+
-| 4K periphs @ AXI   | AXI DMA (Cfg)     | `0x0100_0000` | 4K   |       |
+| 4K periphs @ AXI   | iDMA (`desc64`)   | `0x0100_0000` | 4K   |       |
+|                    +-------------------+---------------+------+-------+
+|                    | iDMA (`reg64`)    | `0x0100_1000` | 4K   |       |
 +--------------------+-------------------+---------------+------+-------+
 | 256K periphs @ Reg | Boot ROM          | `0x0200_0000` | 256K | E     |
 |                    +-------------------+---------------+------+-------+
@@ -265,7 +267,9 @@ The [iDMA Engine](https://github.com/pulp-platform/iDMA) enables high-throughput
 | `DmaConfMax(Read|Write)Txns` | `dw_bt`      | Max. number of outstanding requests to DMA config |
 | `DmaConfAmoNumCuts`          | `aw_bt`      | Number of timing cuts inside config AMO filter    |
 | `DmaConfAmoPostCut`          | `bit`        | Whether to insert a cut after config AMO filter   |
-| `DmaConfEnableTwoD`          | `bit`        | Whether the 2D hardware extension is present      |
+| `DmaConfFrontendDesc64`      | `bit`        | Whether the `desc64` frontend is available        |
+| `DmaConfFrontendReg64`       | `bit`        | Whether the `reg64` frontend is available         |
+| `DmaConfFrontendReg64TwoD`   | `bit`        | Whether `reg64` fe should come with 2D support    |
 | `DmaNumAxInFlight`           | `dw_bt`      | Number of outstanding transfers the DMA launches  |
 | `DmaMemSysDepth`             | `dw_bt`      | The *approximate* depth of the memory system      |
 | `DmaJobFifoDepth`            | `aw_bt`      | The depth of the job FIFO                         |