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/dev/di (view source)

Revision as of 03:27, 5 December 2019

4,830 bytes added ,  03:27, 5 December 2019
→‎Version history: Fill this *almost* completely in; the only things I have left to check are related to partitions and such
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  ! [[#0x95 DVDLowGetStatusRegister|0x95]]
 
  ! [[#0x95 DVDLowGetStatusRegister|0x95]]
 
  ! [[#0x96 DVDLowGetControlRegister|0x96]]
 
  ! [[#0x96 DVDLowGetControlRegister|0x96]]
−
  ! Syscall
+
  ! <abbr title="Highest IOS Syscall number">Syscall</abbr>
−
  ! ES
+
  ! <abbr title="Highest /dev/es IoctlV number">ES</abbr>
 +
! <abbr title="Uses IOSC_CheckDiHashes instead of verifying in DI itself">IOSC</abbr>
 
  |-
 
  |-
 
  | [[#Group A|A]]
 
  | [[#Group A|A]]
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  | {{No}}
 
  | {{No}}
 
  | {{No}}
 
  | {{No}}
−
  | {{Not tested}}
+
  | 0x74
−
  | {{Not tested}}
+
| 0x3c
 +
  | {{No}}
 
  |-
 
  |-
 
  | [[#Group B|B]]
 
  | [[#Group B|B]]
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  | {{Yes}}
 
  | {{Yes}}
 
  | {{No}}
 
  | {{No}}
−
  | {{Not tested}}
+
  | 0x76
−
  | {{Not tested}}
+
| 0x3c
 +
  | {{No}}
 
  |-
 
  |-
 
  |rowspan="3" | [[#Group C|C]]
 
  |rowspan="3" | [[#Group C|C]]
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  |rowspan="3" {{Yes}}
 
  |rowspan="3" {{Yes}}
 
  |rowspan="3" {{No}}
 
  |rowspan="3" {{No}}
−
  |rowspan="3" {{Not tested}}
+
  |rowspan="3" | 0x76
−
  |rowspan="3" {{Not tested}}
+
|rowspan="3" | 0x3e
 +
  |rowspan="3" {{No}}
 
  |-
 
  |-
 
  | [[#Jul 14 2008 19:32:38|Jul 14 2008 19:32:38]] <!-- Matches Jul 14 -->
 
  | [[#Jul 14 2008 19:32:38|Jul 14 2008 19:32:38]] <!-- Matches Jul 14 -->
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  |rowspan="3" {{Yes}}
 
  |rowspan="3" {{Yes}}
 
  |rowspan="3" {{Yes}}
 
  |rowspan="3" {{Yes}}
−
  |rowspan="3" {{Not tested}}
+
  |rowspan="3" | 0x76
−
  |rowspan="3" {{Not tested}}
+
|rowspan="3" | 0x40
 +
  |rowspan="3" {{No}}
 
  |-
 
  |-
 
  | [[#Jul 24 2008 00:30:13|Jul 24 2008 00:30:13]] <!-- Matches Jul 11 -->
 
  | [[#Jul 24 2008 00:30:13|Jul 24 2008 00:30:13]] <!-- Matches Jul 11 -->
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  | 0x79
 
  | 0x79
 
  | 0x42
 
  | 0x42
 +
|rowspan="3" {{Yes}}
 
  |-
 
  |-
 
  | [[#Jun  3 2009 07:49:09|Jun  3 2009 07:49:09]]
 
  | [[#Jun  3 2009 07:49:09|Jun  3 2009 07:49:09]]
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=== Group A ===
 
=== Group A ===
−
  −
==== Oct  5 2006 17:41:21 ====
      
Used in monolithic IOS versions (those prior to IOS28, obviously excluding stubbed IOS versions).  As these versions have only a single ELF file for all modules, there is no single hash for the DI driver.
 
Used in monolithic IOS versions (those prior to IOS28, obviously excluding stubbed IOS versions).  As these versions have only a single ELF file for all modules, there is no single hash for the DI driver.
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In this version, [[#0x8D DVDLowUnencryptedRead|0x8D DVDLowUnencryptedRead]] only accepted the start and end being between 0 and 0x14000, and IOCtls [[#0x95 DVDLowGetStatusRegister|0x95 DVDLowGetStatusRegister]] and [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]] and all IOCtlVs other than [[#0x8B DVDLowOpenPartition|0x8B DVDLowOpenPartition]] did not exist.  [[#0x87|0x87]] and [[#0x7F DVDLowSetSpinupFlag|0x7F DVDLowSetSpinupFlag]] did exist as the current stubs.
 
In this version, [[#0x8D DVDLowUnencryptedRead|0x8D DVDLowUnencryptedRead]] only accepted the start and end being between 0 and 0x14000, and IOCtls [[#0x95 DVDLowGetStatusRegister|0x95 DVDLowGetStatusRegister]] and [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]] and all IOCtlVs other than [[#0x8B DVDLowOpenPartition|0x8B DVDLowOpenPartition]] did not exist.  [[#0x87|0x87]] and [[#0x7F DVDLowSetSpinupFlag|0x7F DVDLowSetSpinupFlag]] did exist as the current stubs.
   −
This version will issues command 0xE0 to the drive if the error interrupt is set before a command runs (in addition to clearing the interrupt).  It prints a message before it issues the command, but not if the issued command fails.
+
This version will issue command 0xE0 to the drive if the error interrupt is set before a command runs (in addition to clearing the interrupt).  It prints a message before it issues the command, but not if the issued command fails.
 +
 
 +
Furthermore, the IOSC [[syscalls]] seem to have weird IDs shifted up by 2; IOSC_Decrypt (used by AESdecryptHW) is 0x69 instead of 0x6b, IOSC_GenerateHash is 0x65 instead of 0x67, and IOSC_DeleteObject is 0x5a instead of 0x5c.  Presumably, later versions added two syscalls before these{{check}} (and after 0x52, as that syscall has the same ID in later versions).
 +
 
 +
==== Oct  5 2006 17:41:21 ====
    
{| class="wikitable"
 
{| class="wikitable"
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=== Group B ===
 
=== Group B ===
 +
 +
Adds [[#0x95 DVDLowGetStatusRegister|0x95 DVDLowGetStatusRegister]], and adds <em>all</em> of the IOCtlVs (which are also exposed as IOCtls): [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90 DVDLowGetNoDiscOpenPartitionParams]], [[#0x91 DVDLowNoDiscOpenPartition|0x91 DVDLowNoDiscOpenPartition]], [[#0x92 DVDLowGetNoDiscBufferSizes|0x92 DVDLowGetNoDiscBufferSizes]], [[#0x93 DVDLowOpenPartitionWithTmdAndTicket|0x93 DVDLowOpenPartitionWithTmdAndTicket]], and [[#0x94 DVDLowOpenPartitionWithTmdAndTicketView|0x94 DVDLowOpenPartitionWithTmdAndTicketView]].  It also allows all 3 ranges in [[#0x8D DVDLowUnencryptedRead|0x8D DVDLowUnencryptedRead]].
 +
 +
The various allocation functions were tweaked; rather than having separate functions for different alignments, they just take an alignment parameter.  They also no longer return a bool and modify a parameter, instead just returning a pointer.
 +
 +
Added a warning if the call to clearDriveErrorInterupt fails.  In this version, it can theoretically fail (as it sends an actual 0xE0 command), but later versinos keep that message even after they stop sending a command.
 +
 +
Added 5 unused debug functions (starting at 20201a6c) that print out various messages, after the (also unused) functions that print info relating to stack usage.  All of these functions continue to exist for the rest of the versions.  Removed some other unused debug methods (dumpDiskInfo, a hex dump method, and a method that printed info about a partion, previously starting at 20202510, 20202540, and 202025f4).  Removed printIOS_OpenError (20201f28), which was used if /dev/es failed to open.  Removed initBytes (20202590) which filled memory with 0xDEADBEEFCAFEBABE.
 +
 +
The function that a hash of some data (located at 20202478 in this version and 20201778 before, and also is the only function that calls IOSC_GenerateHash) changed its fatal error messages for invalid input: "Hash array address is not 64 byte aligned" became "Address of array to be hashed is not 64 byte aligned" and "Hash array length must be >= 64" became "Number of bytes to be hashed must be >= 64".  The function was also changed to copy the computed hash to a parameter (always returning true if computation was successful) instead of comparing the computed hash with the parameter (returning false if computation fails or there was a mismatch).  New functions were added using this function that verify one (20202554) or multiple hashes (20202584).
 +
 +
doBlockRead prints "(doBlockRead) Data subblock %d failed to verify against H0 Hash" instead of "(doBlockRead) Data failed to verify against H0 Hash" if a hash fails.  Note that the subsequent call to diFatalError still uses the old message.  Additionally, the coutner for the loop changed direction since it can show up in that message (presumably a compiler optimisation no longer being possible, instead of an actual change).
 +
 +
Partition-related code seems to have changed{{check}} (printing less messages, among other things), but it's hard to make sense of what's an actual change versus code that was only added for the new IoctlVs.
 +
 +
Removed a variable that stored the H3 hashes offset that was never read (previously located at 20233df4).  However, they didn't remove an even more useless H3 hashes size variable right after it (previously at 20233df8, now at 2022ddb4), for some reason.
 +
 +
ES_DiVerifyWrapper now supports ticket views in addition to tickets.
 +
 +
Added several ES wrappers, most unused:
 +
* ES_GetStoredContent (0x32 and 0x33, at 20204f34)
 +
* ES_GetStoredTmd (0x34 and 0x35, at 20205120)
 +
* ES_GetSharedContents (0x36 and 0x37, at 20204fe4)
 +
* ES_DeleteSharedContent (0x38, at 20205308)
 +
* ES_DiGetTmd (0x39 and 0x3a, at 202055dc)
 +
* ES_DiVerify_TicketView (0x3b, at 202057f0); this function actually is used.
 +
* ES_SetupStreamKey (0x3c, at 20205b58)
 +
* ES_DeleteStreamKey (0x3d, at 20205c18)
 +
 +
Also:
 +
 +
* ES_DiGetTmdView (0x1a, at 20205668) now uses 0x19 if the size is not specified.
 +
* ES_DiGetTicketView (0x1b, at 20205578 and previously 20204104) now allows the first parameter to be null.  This function still is not used.
    
==== Jun  8 2007 18:17:09 ====
 
==== Jun  8 2007 18:17:09 ====
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* [[IOS37]] prior to v3609 (v2070 only)
 
* [[IOS37]] prior to v3609 (v2070 only)
   −
This version adds [[#0x95 DVDLowGetStatusRegister|0x95 DVDLowGetStatusRegister]], but [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]] is still missing.  It also allows all 3 ranges in [[#0x8D DVDLowUnencryptedRead|0x8D DVDLowUnencryptedRead]].  Finally, it adds <em>all</em> of the IOCtlVs (which are also exposed as IOCtls): [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90 DVDLowGetNoDiscOpenPartitionParams]], [[#0x91 DVDLowNoDiscOpenPartition|0x91 DVDLowNoDiscOpenPartition]], [[#0x92 DVDLowGetNoDiscBufferSizes|0x92 DVDLowGetNoDiscBufferSizes]], [[#0x93 DVDLowOpenPartitionWithTmdAndTicket|0x93 DVDLowOpenPartitionWithTmdAndTicket]], and [[#0x94 DVDLowOpenPartitionWithTmdAndTicketView|0x94 DVDLowOpenPartitionWithTmdAndTicketView]].
+
This version will issue command 0xE0 to the drive if the error interrupt is set before a command runs, and additionally prints a a second message if that fails in DiIoctl (which exists in all subsequent versions, even those that do not actually issue a command so it cannot ever fail).
−
 
  −
This version will issues command 0xE0 to the drive if the error interrupt is set before a command runs, and additionally prints a asecond message if that fails in DiIoctl (which exists in all subsequent versions, even those that do not actually issue a command so it cannot ever fail).
      
{| class="wikitable"
 
{| class="wikitable"
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=== Group C ===
 
=== Group C ===
 +
 +
Removes IOCtlVs [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]] (but they are still accessible as IOCtls).  ([[#0x93 DVDLowOpenPartitionWithTmdAndTicket|0x93]] and [[#0x94 DVDLowOpenPartitionWithTmdAndTicketView|0x94]] remain available as IOCtlVs.)
 +
 +
The thunk function for memcpy are now located between thunks for IOS_FlushDCache and IOSC_GenerateHash (at 20205b80) instead of request_di_interrupt and time_now (at 20205dc0) in group B.
    
==== Jul 14 2008 19:25:32 ====
 
==== Jul 14 2008 19:25:32 ====
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* [[IOS35]] starting with v3088
 
* [[IOS35]] starting with v3088
 
* [[IOS36]] starting with v3090
 
* [[IOS36]] starting with v3090
−
  −
Does not have [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]].  Also removes IOCtlVs [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]].
      
{| class="wikitable"
 
{| class="wikitable"
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==== Jul 24 2008 20:08:45 ====
 
==== Jul 24 2008 20:08:45 ====
   −
Only found in [[IOS38]].  Has [[#0x95 DVDLowGetStatusRegister|0x95]] but not [[#0x96 DVDLowGetControlRegister|0x96]]; also does not have [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]].
+
Only found in [[IOS38]].
    
Identical to the Jul 14 2008 19:25:32 build apart from the priority of the main thread being set to 0x1b instead of 0x54 (all versions other than this and Jul 24 2008 00:30:13 use 0x54).  This results in byte differences at address 20207c2c (file offset 7d54), as well as in some ELF header area (file offset 114), and the timestamps.
 
Identical to the Jul 14 2008 19:25:32 build apart from the priority of the main thread being set to 0x1b instead of 0x54 (all versions other than this and Jul 24 2008 00:30:13 use 0x54).  This results in byte differences at address 20207c2c (file offset 7d54), as well as in some ELF header area (file offset 114), and the timestamps.
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=== Group D ===
 
=== Group D ===
 +
 +
Adds [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]].  Note that although these versions are earlier than group C, they have more features.
 +
 +
diFatalError attempts to write 0xdeadbeef to 0xffff0000 before it calls CancelThread and enters an infinite loop.  The message was also changed from "(diFatalError) Fatal error in DI driver: %s\nExiting\n" to "(diFatalError) *** DI FATAL ERROR: %s\nExiting\n".  Something about this changed compiler or decompiler behavior, changing the way uses of that function affect code flow which makes some changes harder to spot.
 +
 +
clearDriveErrorInterupt and doWaitForCoverClose were moved to be before HandleDICommand instead of after (group C has them at 2020146c/2020149c, and now they are at 20200b80/20200b98).  Furthermore, clearDriveErrorInterupt no longer issues a 0xE0 command to the drive, and always returns success (however, the rest of the code still assumes it can fail, printing a warning in that case).
 +
 +
There appear to be several changes to disc reading and hashing{{check}}, but they are hard to follow due to the diFatalError change.
 +
 +
The 0x18000-byte H3 hashes buffer is cleared by commonOpenPartition with value 0xA5 if a non-encrypted disc is used (disc encryption at byte 0x61 on the [[Wii Disc]] is 0 and the partition's H3 offset is also 0; disabling encryption but having an H3 offset set will result in a fatal error in both this version and earlier versions).
 +
 +
Some more ES wrappers were added:
 +
* 0x3E (at 2020525c)
 +
* ES_GetV0TicketFromView (0x40, at 20205068)
    
==== Jul 11 2008 14:34:27 ====
 
==== Jul 11 2008 14:34:27 ====
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* [[IOS53]] (all versions)
 
* [[IOS53]] (all versions)
 
* [[IOS55]] (all versions)
 
* [[IOS55]] (all versions)
−
  −
Adds [[#0x96 DVDLowGetControlRegister|0x96 DVDLowGetControlRegister]].  Removes IOCtlVs [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90 DVDLowGetNoDiscOpenPartitionParams]], [[#0x91 DVDLowNoDiscOpenPartition|0x91 DVDLowNoDiscOpenPartition]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92 DVDLowGetNoDiscBufferSizes]].
      
{| class="wikitable"
 
{| class="wikitable"
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==== Jul 24 2008 00:30:13 ====
 
==== Jul 24 2008 00:30:13 ====
   −
Only found in [[IOS48]].  Has both [[#0x95 DVDLowGetStatusRegister|0x95]] and [[#0x96 DVDLowGetControlRegister|0x96]]; does not have [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]].
+
Only found in [[IOS48]].
    
Identical to the Jul 11 2008 14:34:27 build apart from the priority of the main thread being set to 0x1b instead of 0x54 (all versions other than this and Jul 24 2008 20:08:45 use 0x54).  This results in byte differences at address 20207f40 (file offset 8068), as well as in some ELF header area (file offset 114), and the timestamps.
 
Identical to the Jul 11 2008 14:34:27 build apart from the priority of the main thread being set to 0x1b instead of 0x54 (all versions other than this and Jul 24 2008 20:08:45 use 0x54).  This results in byte differences at address 20207f40 (file offset 8068), as well as in some ELF header area (file offset 114), and the timestamps.
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==== Dec 24 2008 13:51:06 ====
 
==== Dec 24 2008 13:51:06 ====
   −
Used in all versions of [[IOS41]], [[IOS43]], [[IOS45]], and [[IOS46]].  Has both [[#0x95 DVDLowGetStatusRegister|0x95]] and [[#0x96 DVDLowGetControlRegister|0x96]]; does not have [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]].
+
Used in all versions of [[IOS41]], [[IOS43]], [[IOS45]], and [[IOS46]].
    
Rebuild with no changes (other than the timestamps) of Jul 11 2008 14:34:27.
 
Rebuild with no changes (other than the timestamps) of Jul 11 2008 14:34:27.
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=== Group E ===
 
=== Group E ===
 +
 +
The code that checks H0/H1/H2 hashes was moved into the kernel, using [[IOS/Syscalls|syscall]] 0x77 (IOSC_CheckDiHashes).  H3 hashes are still present.  It's not clear if the actual hashing behavior changed{{check}}.
 +
 +
Wrappers for ES IoctlVs 0x41 (at 20205ba4 in 2008 and 20205c58 in 2009) and 0x42 (at 20205b44 in 2008 and 20205bf8 in 2009) were added.
 +
 +
Instructions for syscalls 0x77, 0x78, and 0x79 were added, though only 0x77 is used.  Note that these are out of order; 0x77 is at the end of the list at 202042d0 while 0x78 and 0x79 are wedged between 0x5a and 0x5b at 202041e0 for some reason.
    
==== Nov 24 2008 15:39:09 ====
 
==== Nov 24 2008 15:39:09 ====
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* [[IOS60]] v6174 only (other version is a stub)
 
* [[IOS60]] v6174 only (other version is a stub)
 
* [[IOS61]] v4890 only
 
* [[IOS61]] v4890 only
−
  −
Has both [[#0x95 DVDLowGetStatusRegister|0x95]] and [[#0x96 DVDLowGetControlRegister|0x96]]; does not have [[#0x90 DVDLowGetNoDiscOpenPartitionParams|0x90]], [[#0x91 DVDLowNoDiscOpenPartition|0x91]], and [[#0x92 DVDLowGetNoDiscBufferSizes|0x92]].
      
{| class="wikitable"
 
{| class="wikitable"
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* [[IOS80]] in all versions
 
* [[IOS80]] in all versions
   −
No changes to the actual driver code from the Nov 24 2008 version, but a lot of the ES wrapper code changed (note that there are wrappers for far more [[:/dev/es|ES]] Ioctlvs than are used in practice, similar to the way code for all syscalls exists even if they aren't used).  These also cause string constants to shift, which makes byte comparisons slightly annoying.  The changes:
+
No changes to the actual driver code from the Nov 24 2008 version, but some of the ES wrapper code changed.  These also cause string constants to shift, which makes byte comparisons slightly annoying.  The changes:
    
* ES_AddTicket (20204514, Ioctlv 0x01) no longer always uses a size of 0x2a4, but will instead use 0x2a4 plus a 32-bit size at offset 0x2a8 if the byte at offset 0x1bc is nonzero.
 
* ES_AddTicket (20204514, Ioctlv 0x01) no longer always uses a size of 0x2a4, but will instead use 0x2a4 plus a 32-bit size at offset 0x2a8 if the byte at offset 0x1bc is nonzero.
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