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Line 704: − Official user-processes validate that both input params are page-aligned.+ + + − + + + + + + + + + + + + + + + + + +
→IClientEpSession
The buffer contains an array of [[#XferReport]].
The buffer contains an array of [[#XferReport]].
On newer sysvers this runs code which is the same as the user-process code handling the tmem from [[#ShareReportRing]]. This cmd can handle getting reports from that tmem as well, however normally user-processes would just access the tmem [[#ShareReportRing|directly]].
==== BatchBufferAsync ====
==== BatchBufferAsync ====
Takes an input u64 '''buffer''' and an u64 '''size''', no output.
Takes an input u64 '''buffer''' and an u64 '''size''', no output.
This validates that both input params are page-aligned.
This maps the specified buffer as devicemem and stores the fields for this in object state. If this was already used with this IClientEpSession object, an error is thrown.
==== ShareReportRing ====
==== ShareReportRing ====
Takes an input u32 '''size''' and an input TransferMemory handle, no output.
Takes an input u32 '''size''' and an input TransferMemory handle, no output.
Official user-processes create the TransferMemory with permissions=RW. User-processes also validate that the input size is page-aligned, and this is also validated against data from state.
Official user-processes create the TransferMemory with permissions=RW. This validates that the input size is page-aligned, and this is also validated against data from state. Official user-processes also do this same validation.
When this was used, official user-processes read data from this TransferMemory buffer instead of using [[#GetXferReport]].
When this was used, official user-processes read data from this TransferMemory buffer instead of using [[#GetXferReport]].
This maps a TransferMemory buffer which is used for the [[#XferReport]] Ring, replacing the heap Ring buffer which was setup during [[#PopulateRing]].
Structure of the tmem:
{| class="wikitable" border="1"
|-
! Offset || Size || Description
|-
| 0x0 || 0x8 || Write index
|-
| 0x8 || 0x8 || Read index
|-
| 0x10 || 0x18*count || Array of [[#XferReport]]
|}
write_index!=read_index indicates that report data is available. The index fields are updated with: <code>index = index+1 % count;</code> write_index is updated by sysmodule, read_index is updated by the user-process. If the index field being used is >=count, this will Abort.
= usb:pd =
= usb:pd =