Changes between Version 4 and Version 5 of Component/Vci Multi Ahci

Timestamp:

Mar 29, 2015, 1:39:09 PM (9 years ago)

Author:

alain

Comment:

--

Component/Vci Multi Ahci

@@ -5 +5 @@
 == 1) Functional Description ==
 
-This component emulates a multi-channels disk controller with VCI interface. Each channel[k] can 
-access a different physical disk, modeled as a different file[k] belonging to the host system, 
-and containing a complete disk image.
-Each channel[k] can perform data transfers between file[k] and a buffer in the physical memory
-of the virtual system. The number of supported channels, the file name(s), the VCI burst size, and the block size are hardware parameters, defined as constructor parameters. 
+This component emulates a multi-channels disk controller respecting the AHCI standard. Each channel[k] can access a different physical disk, modeled as a file (one file per channel) belonging to the host system, and containing a complete disk image.
+Each channel[k] can perform data transfers between file[k] and a buffer in the physical memory of the virtual system. The number of supported channels, the file name(s), the VCI burst size, and the block size are hardware parameters, defined as constructor parameters. 
 The number of channels cannot be larger than 8. The burst size must be a power of 2 between 8 and 64 bytes.
 The block size must be a power of 2 between 128 and 4096 bytes.
 
-According to the AHCI specification, each channel[k] controller uses a private ''Command List'' 
-that is handled as a software FIFO. For each channel[k], the ''Command List'' can register up to 32
-''read'' or ''write'' commands, that are handled in pseudo-parallelism by the channel controller.
-This VCI component has a DMA capability, and use it to access both the ''Command List'' and to transfer
-the data to or from memory.
+According to the AHCI specification, each channel[k] controller uses a private ''Command List'' that is handled as a software FIFO. For each channel[k], the ''Command List'' can register up to 32 ''read'' or ''write'' commands, that are handled in pseudo-parallelism by the channel controller.
+This VCI component has a DMA capability, and use it to access both the ''Command List'' and to transfer the data to or from memory.
 
 On the VCI side, it supports both 32 bits and 64 bits data words, and up to 64 bits address width.