5,579
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Changes
section on input structure and possible explanation for 6-24 error
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| {{Yes}}+ | {{Yes}}
− | {{Yes}}
− | {{Yes}}
− | {{Yes}}
− | {{Yes}}
− | {{No}}
− | {{No}}
−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]].+ + + + +
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−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 ====
−Replaces the Jun 8 build for IOS versions other than IOS37:+
−* [[IOS31]] starting with v3088
−* [[IOS33]] starting with v2832
−* [[IOS34]] starting with v3087
−* [[IOS35]] starting with v3088
−* [[IOS36]] starting with v3090
+
+
+
+Only found in [[IOS28]] (which is the first build that split things into modules). The only difference between the build from 7 minutes earlier is that the open heap is at address 0x13800000 (0x9c << 0x15) instead of address 0x13600000 (0x9b << 0x15). This is a 1-byte difference at offset 920 in the file or at address 202007fc. (There are technically 2 other differences between the versions, for the build date strings.)+
−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.+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 and creates a lot of changes that aren't actually changes.+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).+ +Improved error messages in doBlockRead. The debug messages for when a hash failed now also print the first parameter as a pointer (e.g. "(doBlockRead) Data subblock %d failed to verify against H0 Hash (%08x)"). The fatal error message for the first case was changed from "Data failed to verify against H0 Hash" to "Data subblock failed to verify against H0 Hash" (the other messages of the form "H0 Hashes failed to verify" were not changed). Additionally, if the call to doRawDiskRead fails, the message "(doBlockRead) doRawDiskRead failed, rc=%d\n" is printed (previously nothing was printed); the return value is still that of doRawDiskRead in that case. Lastly, when a hash fails, the parameter is memset with value 0xA5 prior to calling diFatalError.+ +The implementation of DVDLowRead no longer calls doReadHashEncryptedState if it hasn't been called before (before it checks if the disc is a secure disc). It never needed to anyways, as it is called after DVDLowReadDiskID, which *must* be called first. It was also moved to be before doNonConfirmingDiscRead and doReadHashEncryptedState (at 202029e8) instead of after them (at 20202950).+ +doReadHashEncryptedState only considers a disc as secure (and only enables hashing) if both disable hashing (byte 0x60 of the [[Wii Disc]]) and disable encryption (byte 0x61) are false (and also acts as if hashing were disabled if encryption is disabled). Previously, only the hashing byte controlled whether the disc was secure and hashing was enabled. <!-- This function is a bit of a mess to read due to compiler/decompiler behavior, but this *looks* like an actual 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 ====
−
−Used by several IOS builds:
−
−* [[IOS37]] starting with v2816
−* [[IOS50]] v4889 (v5120 is a stub)
−* [[IOS51]] v4633 (v4864 is a stub)
−* [[IOS52]] v5661 (v5888 is a stub)
−* [[IOS53]] (all versions)
−* [[IOS55]] (all versions)
−
−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.
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.
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 2012) and 0x42 (at 20205b44 in 2008 and 20205bf8 in 2009 and 2012) 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 ====+ +Used in the first builds of a few IOS versions:+
−* [[IOS56]] v4890 only
−* [[IOS57]] v5404 only
−* [[IOS60]] v6174 only (other version is a stub)
−* [[IOS61]] v4890 only
−
−Used in several IOS versions, and also updated versions of builds that used the Nov 24 2008 version.+* [[IOS56]] starting with v5405+* [[IOS57]] starting with v5661
−* [[IOS58]] in all versions
−* [[IOS80]] in all versions
−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.+
−
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+Used exclusively by [[IOS62]]. The wrappers for ES IoctlVs 0x41 and 0x42 were changed slightly, both requiring that the second parameter is not greater than 0x14 instead of 0x13. This results in differences at addresses 20205c16 (0x42) and 20205c76 (0x41) (file offsets 5d30 and 5d9e), in addition to the timestamp change.+An incorrect size or alignment, or an incorrect in count or out count, will result in a return value of 0x80. Commands not listed here will cause a hang.+IoctlVs and Ioctls both go to one shared function that actually handles them which takes a diCommand; IoctlV is used when there are multiple pointers being passed to simplify conversion from virtual to physical addresses (which happens on the PPC side in both Nintendo's and libogc's IoctlV function). The IoctlVs will modify the passed diCommand to have additional parameters, noted in yellow. This means that in some cases the Ioctl can be used directly.+
−=== 0x8B DVDLowOpenPartition ===
−
−Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand.
−
−Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes, presense of tmd), and 0x40 for an ES error.
−
−This command will clear the error interrupt if it is set.
! Alignment
| 4
| [[Ticket]] (optional)+ | [[Certificate chain|Shared certs]] (optional)+ | 4
|+ Command+ ! Type
− ! Name
| 0+ | u8+ | Command (0x8B)+<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). System menu 4.3U (among other titles) still has a PPC-side implementation (815504c4) but this is not used (the higher-level function that calls it is gone due to not being referenced). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.+ ! Alignment
| 4
| [[TMD]] size pointer (not used)+ | [[Certificate chain|Shared certs]] size pointer (not used)+ | 32
| 4 (32 on PPC side)
|-+
− | 6+ | Shared certs size pointer (again; aliases with the previous pointer)+
− | Out+ | 4+
− | 4 (32 on PPC side)+ |-+
− | 7+ | Shared certs
− | Out
− | Shared certs size, from before (i.e. *vector[6].data)
− | 32
− |-
− | 8
− | Partition data offset pointer
− | Out
− | 4
− | 4 (32 on PPC side)
− |-
− | 9
− | H3 hashes
− | Out
− | 0x18000
− | 32
− |}
−After validating sizes and alignments, the params field of the command is set to a stack-allocated structure:+ struct nodiscopenparams {+ undefined4 unused1;
− ticket * ticket; // Set to vector[3].data
− undefined4 unused2;
− size_t tmdSize; // Set to *vector[4].data
− tmd * tmd; // Set to vector[5].data
− size_t sharedCertsSize; // Set to *vector[6].data
− byte * sharedCerts; // Set to vector[7].data
− off_t partitionDataOffset; // Set to partitionOffset + partition->dataOffset after working
− h3buffer * h3Hashes; // set to vector[9].data
− }
−After executing at a lower level (see [[#0x90 DVDLowGetNoDiscOpenPartitionParams ioctl|§0x90 DVDLowGetNoDiscOpenPartitionParams ioctl]]), tmdSize, sharedCertsSize, and partitionDataOffset are written back to vectors 4, 6, and 8 respectively. (If an error occurs, all three are instead set to 0.)+ |+ Command+ ! Type
− ! Name
| 0+ | u8+ | Command (0x90)+ | off_t+ | Partition position (>> 2)+ | 8
− | nodiscopenparams*
− | params
− |}
−
−=== <s>0x91 DVDLowNoDiscOpenPartition</s> ===
−
−<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). No PPC-side code exists for this command in any known title (it was never called, even in an unreachable in practice way, so the function was optimized out). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.
−
−{| class="wikitable"
− ! Index
− ! Name
− ! Direction
− ! Size
− ! Alignment
| 4
| 32
| 32
| In+ | 32
− |-
− | 5
− | ES Error
− | Out
− | 4 (properly sized, unlike with regular open partition)
− | 4
After validating sizes and alignments, the params field of the command is set to a stack-allocated structure:+
+ struct nodiscopenparams {+ undefined4 unused1;
− ticket * ticket; // Set to vector[1].data
− undefined4 unused2;
− size_t tmdSize; // Set to vector[2].size
− tmd * tmd; // Set to vector[2].data
− size_t sharedCertsSize; // Set to vector[3].size
− byte * sharedCerts; // Set to vector[3].data
− off_t partitionDataOffset; // Set by command
− h3buffer * h3Hashes; // set to vector[4].data
− }
+ |+ Command+ ! Type
− ! Name
| 0+ | u8+ | Command (0x91)+ |-
− | 4
− | off_t
− | Partition data offset
− |- {{partial2}}
− | 4
− | nodiscopenparams*
− | params
− |- {{partial2}}
− | 8
− | u32 *
− | ES error output (vector[5].data)
− |}
−
−=== <s>0x92 DVDLowGetNoDiscBufferSizes</s> ===
−
−<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). System menu 4.3U (among other titles) still has a PPC-side implementation (815502b8) but this is not used (the higher-level function that calls it is gone due to not being referenced). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.
−
−{| class="wikitable"
− |+ Vector
− ! Alignment
| 4 (32 on ppc side)
+
+Both pointers must be non-zero. The ioctlv fills in additional parameters on the command.+
+
+Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand. This function takes an already-read TMD and can take an already-read ticket, which means it can be faster since the ticket does not need to be read from the disc.+
−Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes), and 0x40 for an ES error.
−
−This command will clear the error interrupt if it is set.
! Alignment
| 4
| [[Ticket]] (optional)+ | In+ | 4
After running, the first argument is a pointer to a (stack-allocated) structure used by this and 0x94:+ struct runopenpartparam {+ off_t position;
− ticket * ticket; // Only used by 0x93
− ticketview * ticketview; // Only used by 0x94
− size_t tmdSize;
− tmd * tmd;
− size_t sharedCertsSize;
− u8 * sharedCerts;
− }
− +Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand. This function takes an already-read TMD and can take an already-read ticket ticket view, which means it can be faster since the ticket does not need to be read from the disc.+ +Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes), and 0x40 for an ES error.+ +This command will clear the error interrupt if it is set.+
−{| class="wikitable"
− ! Alignment
| 4
| Ticket View (optional)+ | [[TMD]] (required)+ | In+Using a number not listed here results in a return value of 0x80. The input buffer must be sized 0x20 (except for command 0x8E). Unless otherwise noted, commands return 1 on success.+{{collapse|title=Commands implemented in DiIoctl|text=+<ul>
−<li>0x79 DVDLowWaitForCoverClose</li>
−<li>0x7A DVDLowGetCoverRegister</li>
−<li>0x83 DVDLowGetLength</li>
−<li>0x84 Get DIIMMBUF</li>
−<li>0x85 DVDLowUnmaskCoverInterrupt</li>
−<li>0x86 DVDLowClearCoverInterrupt</li>
−<li>0x87</li>
−<li>0x88 DVDLowGetCoverStatus</li>
−<li>0x89 Enable Cover Interrupt</li>
−<li>0x8B DVDLowOpenPartition ioctl</li>
−<li>0x8E DVDLowEnableDvdVideo</li>
−<li>0x95 DVDLowGetStatusRegister</li>
−<li>0x96 DVDLowGetControlRegister</li>
−</ul>
−}}
−Commands will clear the error interrupt by writing bit 2 of DISR if it is set after execution. Furthermore, the same check happens before execution, but this should generally not happen barring other code directly writing to the DI registers (a warning is logged in this case). These checks happen in handleDiCommand, so commands implemented in DiIoctl are not affected; additionally the second check is skipped for 0x8A DVDLowReset and 0xE0 DVDLowRequestError. In some versions, the second check will also issue a request error command to the drive (which, as a side effect, clears the error in the drive itself, which would break a second DVDLowRequestError — that explains why it is skipped).+If an output buffer size check fails, DIMAR and DILENGTH will not be written, and there is code that sets the return value to 0x20. However, the driver still attempts to start the transfer, which will fail due to not writing DILENGTH (which should have counted back down 0 after any previous successful transfer{{check}}); this will result in an eventual timeout and returning of 0x10{{check}}. <!-- This seems completely wack, but it seems to be how the code works... -->+=== 0x12 DVDLowInquiry ===+Retrieves information about the drive verison; see [http://hitmen.c02.at/files/yagcd/yagcd/chap5.html#sec5.7.3.1 yagcd §5.7.3.1] for more info.+ +The output buffer size must be ≥ 0x20, or DIMAR and DILENGTH will not be written. It must also be 32-bit aligned, or else the driver will hang.+
−Note that YAGCD is incorrect and there is actually one additional byte after the drive date, [https://web.archive.org/web/20070602090342/http://www.crazynation.org/GC/GC_DD_TECH/GCTech.htm apparently] indicating the version. This is not new to the Wii.
−
− DICMDBUF0 = 0x12000000
− DILENGTH = 0x20
− DIMAR = outbuf
− DICMDBUF1 = 0
− DICR = TSTART | DMA
−
− ! Offset
− +=== 0x70 DVDLowReadDiskID ===+ +Reads the current disc ID and initializes the drive. Many other commands will not work before this (either by explicitly checking, or due to the drive returning error 0x05xxxxxx).+ +This command cannot be used while the drive interface is resetting (if [[IOS/Syscalls|syscall]] 0x46 syscall_check_di_reset returns true); in which case it will return 0x80. 0x80 will also be returned if the output buffer is not 32-byte aligned.+ +The output buffer size must be ≥ 0x20, or DIMAR and DILENGTH will not be written.+ + DICMDBUF0 = 0xA8000040+ DICMDBUF1 = 0+ DICMDBUF2 = 0x20+ DILENGTH = 0x20+ DIMAR = dest
− DICR = TSTART | DMA
−
−{| class="wikitable"
− ! Offset
− ! Type
− ! Name
After this command has finished reading, the driver will also look at the 4 bytes at offset 0x18 in the output (i.e. outbuf[6] if outbuf is a u32 array) for the Wii magicword 0x5D1C9EA3 to determine if it is a [[Wii Disc|Wii disc]]. If it is a Wii disc, and it has not already read it, it will read 0x44 (padded to 0x60) bytes starting at byte 0x20 (i.e. the game title, and the disable hashing and disable encryption flags). Thus, after the first call, DVDLowGetLength will return 0x60, and on later calls it will return 0x20.
−=== 0x71 DVDLowRead ===
−Reads and decrypts disc data. This command can only be used if hashing and encryption are enabled for the disc. DVDLowOpenPartition needs to have been called before for the keys to be read.
−The output buffer has no requirements on alignment, but will perform better if 32-byte aligned since it can avoid a copy from a buffer within the driver. Similarly, the offset and size can be any value, but ones that are sector-aligned (sizes that are multiples of 0x7C00 and offsets that are multiples of 0x1F00) avoid copies for the first and/or last sector that needs to be read and decrypted. Each individual sector is read using command 0xA8.
−This command immediately returns 0x20 if the buffer is too small, and also returns 0x20 if something went wrong with decryption or hashing and 2 for a drive error.
−If everything completed successfully, the last length value used by DVDLowGetLength is set to offset (almost certainly a mistake on Nintendo's end). Otherwise, it is set to 0.
| size_t
− | Size (bytes)
− |-
− | 8
Waits for a disc to be inserted; if there is already a disc inserted, it must be removed first. This command does not time out; if no disc is inserted, it will wait forever. (As such, I'm not entirely sure how it can be cancelled; I assume but have not checked that the Wii Fit Channel uses this when waiting for the Wii Fit disc to be inserted, but that can be canceled...)+Continuously waits for a DI interrupt, and when it receives one it checks for the cover interrupt (bit 2 of DICVR); if it is set it then checks if the cover is closed (bit 0 of DICVR) and if sufficient time has ellapsed. It also clears the TC and error interrupts should they occur.+ +The output buffer is not used, and it may be null. Its size is not checked.+
−On completion, returns 0x4.
−
− ! Offset
− +=== 0x7A DVDLowGetCoverRegister ===
−
−Stores the current value of DICVR into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned). Note that Nintendo titles also refer to this as DVDLowPrepareCoverRegister, but that function simply asynchronously reads it into game memory so that it can be accessed by a separate function later. (A similar name pattern is found for the other get-reg commands.)
−
−{| class="wikitable"
− ! Offset
− ! Type
− ! Name
+=== 0x7E DVDLowNotifyReset ===+ +Resets internal flags, closes the open partition (if there is one), clears the transfer complete interrupt and drive error interrupt, enables the transfer complete interrupt and error interrupt, and disables the cover interrupt.+ +{| class="wikitable"+ ! Offset
− ! Type
− ! Name
+=== <s>0x7F DVDLowSetSpinupFlag</s> ===+ +Prints the message "(handleDiCommand) DI_SET_SPINUP_FLAG_CMD should have been executed in the PPC shim layer only" and returns 0x80.+ +The PPC-side simply stores a boolean which is later used as the parameter to DVDLowReset. For some reason, Nintendo decided to give it an ioctl number as well, even though it didn't need one.+ +{| class="wikitable"
− ! Offset
− ! Type
− ! Name
+=== 0x80 DVDLowReadDvdPhysical ===
−
−Probably related to DVD-Video{{check}}.
−
−The output buffer size must be ≥ 0x800, or DIMAR and DILENGTH will not be written. The output buffer also needs to be 32-byte aligned, or else the driver will hang.
−
− DICMDBUF0 = 0xAD000000 | (position << 8) // AD00XX00
− DICMDBUF1 = 0
− DICMDBUF2 = 0
− DILENGTH = 0x800
− DIMAR = dest
− DICR = TSTART | DMA
−
−{| class="wikitable"
− |+ Command
− ! Offset
− ! Type
− ! Name
=== 0x81 DVDLowReadDvdCopyright ===+Probably related to DVD-Video{{check}}.+ DICMDBUF0 = 0xAD010000 | (position << 8) // AD01XX00+ DICMDBUF1 = 0
− DICMDBUF2 = 0
− DICR = TSTART
−
−The contents of DIIMMBUF (u32) are written to the output buffer. The output buffer size is not checked, but 4 would be a sane value.
Probably related to DVD-Video{{check}}.+The output buffer size must be ≥ 0x800, or DIMAR and DILENGTH will not be written. The output buffer also needs to be 32-byte aligned, or else the driver will hang.+ + DICMDBUF0 = 0xAD020000 | (position << 8) // AD02XX00+ DICMDBUF1 = 0+ DICMDBUF2 = 0+ DILENGTH = 0x800+ DIMAR = dest+ DICR = TSTART | DMA
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+=== 0x85 DVDLowUnmaskCoverInterrupt ===+Disables the cover interrupt by clearing bit 1 of DICVR (leaving bit zero unchanged). Does not clear the cover interrupt if it is currently asserted (does not write bit 2).+Clears the cover interrupt by writing bit 2 of DICVR (leaving the other bits unchanged).+ |}
−
−=== <s>0x87</s> ===
−
−Dummied out; does nothing (and always returns 1). Possibly an ID reserved for a PPC-only command (DVDLowBreak?), as is also done with DVDLowSetSpinupFlag?
−
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−
−{| class="wikitable"
− |+ Command
− ! Offset
− ! Type
− ! Name
− |-
− | 0
− | u8
− | Command (0x87)
−Checks the current cover status and stores the result into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned).
−
−The result is 0 right after a reset{{check}}, 1 if a disc is not inserted (bit 1 of DICVR set), and 2 if a disc is inserted (bit 1 of DICVR not set).
−
−{| class="wikitable"
− |+ Command
− ! Offset
− ! Type
− ! Name
− |-
− | 0
− | u8
− | Command (0x88)
− |}
−Enables the cover interrupt by setting bit 1 of DICVR (leaving bit zero unchanged). Does not clear the cover interrupt if it is currently asserted (does not write bit 2).+
'''/dev/di''' is the [[IOS]] driver used to control the disc drive. This documentation is mostly based on the most recent version (dated Jun 3 2009 07:49:09 and included in [[IOS58]] and [[IOS80]]). Names are based on function names found in Nintendo titles (which print an error message including the name if the Ioctl or Ioctlv fails). DVDLowRequestAudioStatus and DVDLowAudioStream are not found in Wii titles, but the names can be found in [https://wiki.dolphin-emu.org/index.php?title=Ships_with_Debugging_Symbols debug symbols included in various Gamecube games].
'''/dev/di''' is the [[IOS]] driver used to control the disc drive. This documentation is mostly based on the most recent version (dated Jun 3 2009 07:49:09 and included in [[IOS58]] and [[IOS80]]). Names are based on function names found in Nintendo titles (which print an error message including the name if the Ioctl or Ioctlv fails). DVDLowRequestAudioStatus and DVDLowAudioStream are not found in Wii titles, but the names can be found in [https://wiki.dolphin-emu.org/index.php?title=Ships_with_Debugging_Symbols debug symbols included in various Gamecube games].
+== Input structure ==
The input to all /dev/di commands (other than enable DVD video) is the following struct, which must be sized 0x20 and aligned 4:
The input to all /dev/di commands (other than enable DVD video) is the following struct, which must be sized 0x20 and aligned 4:
Line 23:
Line 24:
(DiIoctl) Note: This is normal for DVD software before 6-24
(DiIoctl) Note: This is normal for DVD software before 6-24
</pre></blockquote>
</pre></blockquote>
+
+This probably means IOCTL numbers were created on June 24th of some year.
== Return values ==
== Return values ==
Line 76:
Line 79:
== Version history ==
== Version history ==
−There are '''12''' known normal versions (along with '''9''' [[#vWii note|matching vWii versions]]) of the DI driver found in various [[IOS History|IOS versions]], based on the IOS versions still present on NUS. These are generalized into 5 version families, based on observable behavior (this is not strictly chronological, presumably as Nintendo was working on multiple versions with the same features at the same time). It is quite likely that there are additional changes not noted here.
+There are '''14''' known normal versions (along with '''9''' [[#vWii note|matching vWii versions]]) of the DI driver found in various [[IOS History|IOS versions]], based on the IOS versions present on NUS and those found on various game discs. These are generalized into 5 version families, based on observable behavior (this is not strictly chronological, presumably as Nintendo was working on multiple versions with the same features at the same time). It is quite likely that there are additional changes not noted here.
The DI driver includes a full set of [[:/dev/es|ES]] IoctlV wrappers, although it only uses ES_DiVerify and ES_DiVerifyWithTicketView. It also includes instructions for all [[syscalls]], even though most are not used. Both of those change across versions, even though those differences do not actually show up in practice.
The DI driver includes a full set of [[:/dev/es|ES]] IoctlV wrappers, although it only uses ES_DiVerify and ES_DiVerifyWithTicketView. It also includes instructions for all [[syscalls]], even though most are not used. Both of those change across versions, even though those differences do not actually show up in practice.
Line 129:
Line 132:
|data-sort-value="z" {{Partial|vWii}}
|data-sort-value="z" {{Partial|vWii}}
|-
|-
− | [[#Group B|B]]
+ |rowspan="2"| [[#Group B|B]]
|data-sort-value="1181326629"| [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]]
|data-sort-value="1181326629"| [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]]
− | {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{No}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{Yes}}
+ |rowspan="2" {{No}}
+ |rowspan="2" {{No}}
+ |rowspan="2" data-sort-value="118"| 0x76
+ |rowspan="2" data-sort-value="61" | 0x3d
| {{No}}
| {{No}}
− | {{Yes}}
+ |-
− |data-sort-value="1181326810"| [[#Jun 8 2007 18:20:10|Jun 8 2007 18:20:10]]
− |data-sort-value="118"| 0x76
− |data-sort-value="61" | 0x3d
| {{No}}
| {{No}}
|-
|-
Line 207:
Line 213:
|data-sort-value="z" {{Partial|vWii}}
|data-sort-value="z" {{Partial|vWii}}
|-
|-
− |rowspan="6" | [[#Group E|E]]
+ |rowspan="7" | [[#Group E|E]]
|data-sort-value="1227541149"| [[#Nov 24 2008 15:39:09|Nov 24 2008 15:39:09]]
|data-sort-value="1227541149"| [[#Nov 24 2008 15:39:09|Nov 24 2008 15:39:09]]
− |rowspan="6" {{No}}
+ |rowspan="7" {{No}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Partial}}
+ |rowspan="7" {{Partial}}
− |rowspan="6" {{Partial}}
+ |rowspan="7" {{Partial}}
− |rowspan="6" {{Partial}}
+ |rowspan="7" {{Partial}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" {{Yes}}
+ |rowspan="7" {{Yes}}
− |rowspan="6" data-sort-value="121"| 0x79
+ |rowspan="7" data-sort-value="121"| 0x79
− |data-sort-value="66"| 0x42
+ |data-sort-value="66"| 0x42
− | {{No}}
+ | {{No}}
− |-
+ |-
+ |data-sort-value="1239037807"| [[#Apr 6 2009 17:10:07|Apr 6 2009 17:10:07]]
+ |data-sort-value="68"| 0x44
+ | {{No}}
+ |-
|data-sort-value="1244015349"| [[#Jun 3 2009 07:49:09|Jun 3 2009 07:49:09]]
|data-sort-value="1244015349"| [[#Jun 3 2009 07:49:09|Jun 3 2009 07:49:09]]
|data-sort-value="69"| 0x45
|data-sort-value="69"| 0x45
Line 263:
Line 273:
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 43575ada3e27b20543fc13be1395800e
+ | colspan="3"| 5032764e723e0db7e6d7f434219c9d50289a1cab
|-
|-
! Thing
! Thing
Line 317:
Line 327:
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 43d861243ca8ae5370b08e810566bc06
+ | colspan="3"| 9dce75d14e01f6efc8d56821c139490792b8b3f9
|-
|-
! Thing
! Thing
Line 365:
Line 375:
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
| colspan="3" {{Not tested|Varies}}
| colspan="3" {{Not tested|Varies}}
|-
|-
Line 404:
Line 414:
|}
|}
−=== Group B ===
+==== Apr 3 2012 11:52:55 ====
−Wii U vWii variant of [[#Oct 5 2006 17:41:21|Oct 5 2006 17:41:21]]. Used in monolithic IOS versions (prior to IOS28). Has the normal [[#vWii note|vWii changes]], and additionally, the string constant <code>/dev/es</code> is located in a mutable location (at 20207020) instead of at a constant location with the other string constants (as in all other versions).
−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.
+{| class="wikitable"
− ! SHA-1
−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.
+ | colspan="3" {{Not tested|Varies}}
− |-
−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.
+ ! Thing
− ! Virtual address
−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).
+ ! Physical address
− ! Size
−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).
+ |-
+ | Code (and entry point)
+ | 20200000
+ | 13580000
+ | 0x6718
+ |-
+ | Data (ES vars)
+ | 20207000
+ | 13587000
+ | 0x140
+ |-
+ | BSS (zero'd)
+ | 20208000
+ | 13588000
+ | 0x2BE08
+ |-
+ | Stack
+ | 2022bd40
+ | ?
+ | 0x8000
+ |-
+ | Protected heap
+ | 20208020
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13400000
+ | ?
+ | 0x18000
+ |}
+=== 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 was split into several functions (and fewer functions are now inlined), due to the addition of functions for the new IoctlVs. Actual behavior seems to be identical, apart from log messages using new function names.
Partition-related code was split into several functions (and fewer functions are now inlined), due to the addition of functions for the new IoctlVs. Actual behavior seems to be identical, apart from log messages using new function names.
Line 454:
Line 508:
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| c808d8b90a74a4ee808b199a1b1e8d53
+ | colspan="3"| 260be947a08f57f6ef51086427fe222fd4040399
|-
|-
! Thing
! Thing
Line 493:
Line 547:
|}
|}
−=== Group C ===
+==== Jun 8 2007 18:20:10 ====
−Only found in [[IOS28]] version 1288 (which is the first build that split things into modules). This version is not present on NUS, but can be found on the update partition of some discs, such as ''LEGO Star Wars: The Complete Saga'' and ''Marble Saga: Kororinpa''. The only difference between the build from the earlier build is that the open heap is at address 0x13800000 (0x9c << 0x15) instead of address 0x13600000 (0x9b << 0x15). This is a 1-byte difference at offset bfc in the file or at address 20200ad4. (There are also differences for the build dates).
−{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 366021c440e6377044f8ca8c94e2e6bc
+ | colspan="3"| fb308a9a1d9341df9517db155f4383162325dcc0
|-
|-
! Thing
! Thing
Line 521:
Line 563:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x7D74
+ | 0x80E0
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20208000
+ | 20209000
− | 139B8000
+ | 139B9000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 20209000
+ | 2020A000
− | 139B9000
+ | 139BA000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022cdc4
+ | 2022ddc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 20209020
+ | 2020A020
| ?
| ?
| 0x4000
| 0x4000
|-
|-
| Open heap
| Open heap
− | 13600000
+ | 13800000
| ?
| ?
| 0x18000
| 0x18000
|}
|}
−==== Jul 14 2008 19:32:38 ====
+=== 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 ====
+Replaces the Jun 8 build for IOS versions other than IOS37:
−* [[IOS31]] starting with v3088
+* [[IOS33]] starting with v2832
+* [[IOS34]] starting with v3087
+* [[IOS35]] starting with v3088
+* [[IOS36]] starting with v3090
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 49f714dd1a0985fbd4c44ee9fe4f945a
+ | colspan="3"| 57667279972205462da427535a75a913574f2798
|-
|-
! Thing
! Thing
Line 588:
Line 642:
|-
|-
| Open heap
| Open heap
− | 13800000
+ | 13600000
| ?
| ?
| 0x18000
| 0x18000
|}
|}
−==== Jul 24 2008 20:08:45 ====
+==== Jul 14 2008 19:32:38 ====
−Only found in [[IOS28]] (which is the first build that split things into modules). The only difference between the build from 7 minutes earlier is that the open heap is at address 0x13800000 (0x9c << 0x15) instead of address 0x13600000 (0x9b << 0x15). This is a 1-byte difference at offset 924 in the file or at address 202007fc. (There are technically 2 other differences between the versions, for the build date strings.)
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| ef1a8c1270f82e0993f504f1e17a5152
+ | colspan="3"| 92b9a637383729b25fbcb663f2895f66c6d9c987
|-
|-
! Thing
! Thing
Line 634:
Line 686:
|-
|-
| Open heap
| Open heap
− | 13600000
+ | 13800000
| ?
| ?
| 0x18000
| 0x18000
|}
|}
−=== Group D ===
+==== Jul 24 2008 20:08:45 ====
−Only found in [[IOS38]]. Note that this also has a version string of <code>$IOSVersion: DIP: 07/24/08 20:08:<mark>44</mark> 64M $</code>, probably just due to the two timestamps being determined at separate instants.
−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.
−{| class="wikitable"
− ! SHA-1
− | colspan="3"| b4cdc54a5912d64f9ef1e516931ab32d64677a9c
− |-
− ! Thing
− ! Virtual address
− ! Physical address
− ! Size
− |-
− | Code (and entry point)
−{| class="wikitable"
− ! MD5
− | colspan="3"| 382d4a5cafdb1e28ba039d25db7c4c1f
− |-
− ! Thing
− ! Virtual address
− ! Physical address
− ! Size
− |-
− | Code (and entry point)
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x8088
+ | 0x7D74
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20209000
+ | 20208000
− | 139B9000
+ | 139B8000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 2020A000
+ | 20209000
− | 139BA000
+ | 139B9000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022ddc4
+ | 2022cdc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 2020a020
+ | 20209020
| ?
| ?
| 0x4000
| 0x4000
Line 710:
Line 737:
|}
|}
−==== Jul 24 2008 00:30:13 ====
+==== Apr 3 2012 12:00:16 1 ====
−Wii U vWii variant of [[#Jul 14 2008 19:25:32|Jul 14 2008 19:25:32]], with the normal [[#vWii note|vWii changes]]. Used by [[IOS31]], [[IOS33]], [[IOS34]], [[IOS35]], and [[IOS36]].
−{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 108011e89e557d4e8adf1a02f87cb8ea
+ | colspan="3"| e04f3abe93ca9b9a2518c2ddc3d273e43caed1f8
|-
|-
! Thing
! Thing
Line 728:
Line 753:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x8088
+ | 0x7D90
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20209000
+ | 20208000
− | 139B9000
+ | 139B8000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 2020A000
+ | 20209000
− | 139BA000
+ | 139B9000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022ddc4
+ | 2022cdc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 2020a020
+ | 20209020
| ?
| ?
| 0x4000
| 0x4000
Line 756:
Line 781:
|}
|}
−==== Dec 24 2008 13:51:06 ====
+==== Apr 3 2012 12:00:16 2 ====
−Wii U vWii variant of [[#Jul 24 2008 20:08:45|Jul 24 2008 20:08:45]], with the normal [[#vWii note|vWii changes]]. Used by [[IOS38]] exclusively. The only difference from the other build with the same timestamp is the main thread's priority (which was changed to 0x1b from 0x54). This difference appears in memory at address 20207c48 (offset 7d70) and in the ELF header at file offset 114. It's rather odd that the timestamp was not updated despite that change.
−{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 72122c88cdcd4279cc09e197d3079624
+ | colspan="3"| b62ad5ea5a2e03d2fb73e93dad1d34c102ec357a
|-
|-
! Thing
! Thing
Line 774:
Line 797:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x8088
+ | 0x7D90
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20209000
+ | 20208000
− | 139B9000
+ | 139B8000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 2020A000
+ | 20209000
− | 139BA000
+ | 139B9000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022ddc4
+ | 2022cdc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 2020a020
+ | 20209020
| ?
| ?
| 0x4000
| 0x4000
Line 802:
Line 825:
|}
|}
−=== Group E ===
+==== Apr 3 2012 13:11:40 ====
−Wii U vWii variant of [[#Jul 14 2008 19:32:38|Jul 14 2008 19:32:38]], with the normal [[#vWii note|vWii changes]]. Used by [[IOS28]] exclusively. The open heap is at 0x13800000 instead of 0x13600000, due to a 1-byte change at address 202007fc or offset 924.
−{| class="wikitable"
− ! MD5
− | colspan="3"| 1d1723825d53b5389ec80c89c8a3aa06701ae07d
− |-
− ! Thing
− ! Virtual address
− ! Physical address
−{| class="wikitable"
− ! MD5
− | colspan="3"| 48e1be8f767feb59cbc51aa4329d735a
− |-
− ! Thing
− ! Virtual address
− ! Physical address
! Size
! Size
|-
|-
Line 831:
Line 841:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x7F00
+ | 0x7D90
|-
|-
| Data (ES vars)
| Data (ES vars)
Line 854:
Line 864:
|-
|-
| Open heap
| Open heap
− | 13600000
+ | 0x13800000
| ?
| ?
| 0x18000
| 0x18000
|}
|}
−==== Jun 3 2009 07:49:09 ====
+=== 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 and creates a lot of changes that aren't actually changes.
−* [[IOS59]] in all versions
−* [[IOS61]] starting with v5405
−* [[IOS70]] v6687 (v6912 is a stub)
−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).
−Improved error messages in doBlockRead. The debug messages for when a hash failed now also print the first parameter as a pointer (e.g. "(doBlockRead) Data subblock %d failed to verify against H0 Hash (%08x)"). The fatal error message for the first case was changed from "Data failed to verify against H0 Hash" to "Data subblock failed to verify against H0 Hash" (the other messages of the form "H0 Hashes failed to verify" were not changed). Additionally, if the call to doRawDiskRead fails, the message "(doBlockRead) doRawDiskRead failed, rc=%d\n" is printed (previously nothing was printed); the return value is still that of doRawDiskRead in that case. Lastly, when a hash fails, the parameter is memset with value 0xA5 prior to calling diFatalError.
−* ES_GetTicketFromView (20204fc0, Ioctlvs 0x43 and 0x44) was added
+* Ioctlv 0x45 (20205cb8) was added
+The implementation of DVDLowRead no longer calls doReadHashEncryptedState if it hasn't been called before (before it checks if the disc is a secure disc). It never needed to anyways, as it is called after DVDLowReadDiskID, which *must* be called first. It was also moved to be before doNonConfirmingDiscRead and doReadHashEncryptedState (at 202029e8) instead of after them (at 20202950).
+doReadHashEncryptedState only considers a disc as secure (and only enables hashing) if both disable hashing (byte 0x60 of the [[Wii Disc]]) and disable encryption (byte 0x61) are false (and also acts as if hashing were disabled if encryption is disabled). Previously, only the hashing byte controlled whether the disc was secure and hashing was enabled. <!-- This function is a bit of a mess to read due to compiler/decompiler behavior, but this *looks* like an actual 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 ====
+Used by several IOS builds:
+* [[IOS37]] starting with v2816
+* [[IOS50]] v4889 (v5120 is a stub)
+* [[IOS51]] v4633 (v4864 is a stub)
+* [[IOS52]] v5661 (v5888 is a stub)
+* [[IOS53]] (all versions)
+* [[IOS55]] (all versions)
+Note that this also has a version string of <code>$IOSVersion: DIP: 07/11/08 14:34:<mark>26</mark> 64M $</code>, probably just due to the two timestamps being determined at separate instants.
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| 89f7dc21f07e2cae97c3a571b23d8abd
+ | colspan="3"| bff35f53a0ed9f69b15a224552fcc73372308099
|-
|-
! Thing
! Thing
Line 889:
Line 914:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x7FF0
+ | 0x8088
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20208000
+ | 20209000
− | 139B8000
+ | 139B9000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 20209000
+ | 2020A000
− | 139B9000
+ | 139BA000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022cdc4
+ | 2022ddc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 20209020
+ | 2020a020
| ?
| ?
| 0x4000
| 0x4000
Line 917:
Line 942:
|}
|}
−==== Feb 27 2012 14:39:56 ====
+==== Jul 24 2008 00:30:13 ====
+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.
{| class="wikitable"
{| class="wikitable"
− ! MD5
+ ! SHA-1
− | colspan="3"| a92e0407a61fe6812724cf1ed4ccab68
+ | colspan="3"| 0fc5a88a327ee2b5c4ce3dc05faf8c7ef3bbcc1b
|-
|-
! Thing
! Thing
Line 933:
Line 960:
| 20200000
| 20200000
| 139B0000
| 139B0000
− | 0x7FF0
+ | 0x8088
|-
|-
| Data (ES vars)
| Data (ES vars)
− | 20208000
+ | 20209000
− | 139B8000
+ | 139B9000
| 0x140
| 0x140
|-
|-
| BSS (zero'd)
| BSS (zero'd)
− | 20209000
+ | 2020A000
− | 139B9000
+ | 139BA000
| 0x2BDC4
| 0x2BDC4
|-
|-
| Stack
| Stack
− | 2022cdc4
+ | 2022ddc4
| ?
| ?
| 0x8000
| 0x8000
|-
|-
| Protected heap
| Protected heap
− | 20209020
+ | 2020a020
| ?
| ?
| 0x4000
| 0x4000
Line 961:
Line 988:
|}
|}
−== IoctlVs ==
+==== Dec 24 2008 13:51:06 ====
−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.
−{| class="wikitable"
{| class="wikitable"
− |+ Vector
+ ! SHA-1
− ! Index
+ | colspan="3"| d254a265d25d96723a566e6f877f5df05a645699
− ! Name
+ |-
− ! Direction
+ ! Thing
+ ! Virtual address
+ ! Physical address
! Size
! Size
− |-
|-
− | 0
+ | Code (and entry point)
− | Command
+ | 20200000
− | In
+ | 139B0000
− | 0x20
+ | 0x8088
− |-
|-
− | 1
+ | Data (ES vars)
− | 20209000
− | In
+ | 139B9000
− | 0x2a4 if present, not checked if absent (should be 0)
+ | 0x140
− | 32
|-
|-
− | 2
+ | BSS (zero'd)
− | 2020A000
− | In
+ | 139BA000
− | Arbitrary if present, not checked if absent (should be 0)
+ | 0x2BDC4
− | 32
|-
|-
− | 3
+ | Stack
− | [[TMD]]
+ | 2022ddc4
− | Out
+ | ?
− | 0x49e4
+ | 0x8000
− | 32
+ |-
+ | Protected heap
+ | 2020a020
+ | ?
+ | 0x4000
|-
|-
− | 4
+ | Open heap
− | ES Error
+ | 13600000
− | Out
+ | ?
− | 0x20 (of which only the first 4 bytes are used)
+ | 0x18000
− |}
|}
+
+==== Apr 3 2012 12:21:34 ====
+
+Wii U vWii variant of [[#Jul 14 2008 19:32:38|Jul 14 2008 19:32:38]], with the normal [[#vWii note|vWii changes]]. Used by [[IOS37]], [[IOS53]], and [[IOS55]].
{| class="wikitable"
{| class="wikitable"
− ! SHA-1
− ! Offset
+ | colspan="3"| e7a0824785268df455d56c1803620eff180d6556
− |-
|-
− ! Thing
− ! Virtual address
− ! Physical address
+ ! Size
|-
|-
− | 4
+ | Code (and entry point)
− | off_t
+ | 20200000
− | Partition offset
+ | 139B0000
− |- {{partial2}}
+ | 0x80A4
− | 8
+ |-
− | [[Ticket]]*
+ | Data (ES vars)
− | Ticket
+ | 20209000
− |- {{partial2}}
+ | 139B9000
− | 12
+ | 0x140
− | size_t
+ |-
− | Shared certs size
+ | BSS (zero'd)
− |- {{partial2}}
+ | 2020A000
− | 16
+ | 139BA000
− | u8*
+ | 0x2BDC4
− | Shared certs
+ |-
− |- {{partial2}}
+ | Stack
− | 20
+ | 2022ddc4
− | [[TMD]]*
+ | ?
− | tmd
+ | 0x8000
− |- {{partial2}}
+ |-
− | 24
+ | Protected heap
− | u32*
+ | 2020a020
− | ES error output
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
|}
|}
−=== <s>0x90 DVDLowGetNoDiscOpenPartitionParams</s> ===
+==== Apr 3 2012 12:31:01 ====
−Wii U vWii variant of [[#Jul 14 2008 19:32:38|Jul 14 2008 19:32:38]], with the normal [[#vWii note|vWii changes]]. Used by [[IOS41]], [[IOS43]], [[IOS45]], [[IOS46]], and [[IOS48]] (the original version was only used by IOS48, with the rest using [[#Dec 24 2008 13:51:06|Dec 24 2008 13:51:06]]). The main thread has priority 0x1b instead of 0x54, resulting in byte differences at address 20207f5c (offset 8084) and in the ELF header (offset 114), as well as the timestamps. Was the priority change for versions other than IOS48 intentional, with the other modules being updated to compensate{{check}}?
{| class="wikitable"
{| class="wikitable"
− |+ Vector
+ ! SHA-1
− ! Index
+ | colspan="3"| 8835422c143de4b359fea4a0a56aef9386caa53d
− ! Name
+ |-
− ! Direction
+ ! Thing
+ ! Virtual address
+ ! Physical address
! Size
! Size
− |-
|-
− | 0
+ | Code (and entry point)
− | Command
+ | 20200000
− | In
+ | 139B0000
− | 0x20
+ | 0x80A4
− |-
|-
− | 1
+ | Data (ES vars)
− | 20209000
− | In
+ | 139B9000
− | 4
+ | 0x140
− | 4 (32 on PPC side)
|-
|-
− | 2
+ | BSS (zero'd)
− | 2020A000
− | In
+ | 139BA000
− | 4
+ | 0x2BDC4
− | 4 (32 on PPC side)
|-
|-
− | 3
+ | Stack
− | [[Ticket]]
+ | 2022ddc4
− | Out
+ | ?
− | 0x2A4
+ | 0x8000
− |-
|-
− | 4
+ | Protected heap
− | TMD size pointer (again; aliases with previous pointer)
+ | 2020a020
− | Out
+ | ?
− | 4
+ | 0x4000
− |-
|-
− | 5
+ | Open heap
− | [[TMD]]
+ | 13600000
− | Out
+ | ?
− | TMD size, from before (i.e. *vector[4].data)
+ | 0x18000
− | 32
+ |}
−=== 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 2012) and 0x42 (at 20205b44 in 2008 and 20205bf8 in 2009 and 2012) 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 ====
−Used in the first builds of a few IOS versions:
−* [[IOS56]] v4890 only
+* [[IOS57]] v5404 only
+* [[IOS60]] v6174 only (other version is a stub)
+* [[IOS61]] v4890 only
{| class="wikitable"
{| class="wikitable"
− ! SHA-1
− ! Offset
+ | colspan="3"| 96b035dafcfaf826d1772abd07b8014aed15035f
− |-
|-
− ! Thing
− ! Virtual address
− ! Physical address
+ ! Size
|-
|-
− | 4
+ | Code (and entry point)
− | 20200000
− | 139B0000
− |- {{partial2}}
+ | 0x7F00
− |+ Vector
− |-
|-
− | 0
+ | Data (ES vars)
− | Command
+ | 20208000
− | In
+ | 139B8000
− | 0x20
+ | 0x140
− |-
|-
− | 1
+ | BSS (zero'd)
− | [[Ticket]]
+ | 20209000
− | In
+ | 139B9000
− | 0x2a4
+ | 0x2BDC4
− |-
|-
− | 2
+ | Stack
− | [[TMD]]
+ | 2022cdc4
− | In
+ | ?
− | Not checked
+ | 0x8000
− |-
|-
− | 3
+ | Protected heap
− | [[Certificate chain|Shared certs]]
+ | 20209020
− | ?
− | Not checked
+ | 0x4000
− | 32
|-
|-
− | 4
+ | Open heap
− | H3 hashes
+ | 13600000
− | In
+ | ?
| 0x18000
| 0x18000
− |}
|}
−==== Apr 6 2009 17:10:07 ====
+Used exclusively by [[IOS56]] v5146, which is not found on NUS (but can be found on e.g. Guitar Hero 5).
−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_GetTicketFromView (20204fc0, Ioctlvs 0x43 and 0x44) was added
{| class="wikitable"
{| class="wikitable"
− ! SHA-1
− ! Offset
+ | colspan="3"| 9a915fd77389a79c7fa516e4aac4e30e4e1174ad
− |-
|-
− ! Thing
− ! Virtual address
− ! Physical address
− ! Index
− ! Name
− ! Direction
! Size
! Size
− |-
|-
− | 0
+ | Code (and entry point)
− | Command
+ | 20200000
− | In
+ | 139B0000
− | 0x20
+ | 0x7FB4
− | 4
+ |-
+ | Data (ES vars)
+ | 20208000
+ | 139B8000
+ | 0x140
|-
|-
− | 1
+ | BSS (zero'd)
− | [[TMD]] size pointer
+ | 20209000
− | Out
+ | 139B9000
− | 4
+ | 0x2BDC4
− |-
|-
− | 2
+ | Stack
− | [[Certificate chain|Shared certs]] size pointer
+ | 2022cdc4
− | Out
+ | ?
− | 4
+ | 0x8000
− | 4 (32 on ppc side)
+ |-
− |}
+ | Protected heap
+ | 20209020
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
+ |}
+==== Jun 3 2009 07:49:09 ====
+Used in several IOS versions, and also updated versions of builds that used the Nov 24 2008 version.
−* [[IOS56]] starting with v5405
+* [[IOS57]] starting with v5661
+* [[IOS58]] in all versions
+* [[IOS59]] in all versions
+* [[IOS61]] starting with v5405
+* [[IOS70]] v6687 (v6912 is a stub)
+* [[IOS80]] in all versions
+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:
+* Ioctlv 0x45 (20205cb8) was added
{| class="wikitable"
{| class="wikitable"
− |+ Command
+ ! SHA-1
− ! Offset
+ | colspan="3"| 4e04e88ec7250de84a1e788ae69fdad9351330a8
− ! Type
+ |-
− ! Name
+ ! Thing
+ ! Virtual address
+ ! Physical address
+ ! Size
+ |-
+ | Code (and entry point)
+ | 20200000
+ | 139B0000
+ | 0x7FF0
|-
|-
− | 0
+ | Data (ES vars)
− | u8
+ | 20208000
− | Command (0x92)
+ | 139B8000
+ | 0x140
|-
|-
− | 4
+ | BSS (zero'd)
− | off_t
+ | 20209000
− | Partition position (>> 2)
+ | 139B9000
− |- {{partial2}}
+ | 0x2BDC4
− | 8
+ |-
− | u32 *
+ | Stack
− | TMD Size out
+ | 2022cdc4
− |- {{partial2}}
+ | ?
− | 12
+ | 0x8000
− | u32 *
+ |-
− | Cert Chain Size Out
+ | Protected heap
+ | 20209020
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
|}
|}
−=== 0x93 DVDLowOpenPartitionWithTmdAndTicket ===
+==== Feb 27 2012 14:39:56 ====
−Used exclusively by [[IOS62]]. The wrappers for ES IoctlVs 0x41 and 0x42 were changed slightly, both requiring that the second parameter is not greater than 0x14 instead of 0x13. This results in differences at addresses 20205c16 (0x42) and 20205c76 (0x41) (file offsets 5d30 and 5d9e), in addition to the timestamp change.
−{| class="wikitable"
{| class="wikitable"
− |+ Vector
+ ! SHA-1
− ! Index
+ | colspan="3"| d5dfeb42909a20453c0f574e9a8c41f50792bf8f
− ! Name
+ |-
− ! Direction
+ ! Thing
+ ! Virtual address
+ ! Physical address
! Size
! Size
− |-
|-
− | 0
+ | Code (and entry point)
− | Command
+ | 20200000
− | In
+ | 139B0000
− | 0x20
+ | 0x7FF0
− |-
|-
− | 1
+ | Data (ES vars)
− | 20208000
− | In
+ | 139B8000
− | 0x2a4 if present, not checked if absent (should be 0)
+ | 0x140
− | 32
|-
|-
− | 2
+ | BSS (zero'd)
− | [[TMD]] (required)
+ | 20209000
− | In
+ | 139B9000
− | Arbitrary
+ | 0x2BDC4
− | 32
+ |-
+ | Stack
+ | 2022cdc4
+ | ?
+ | 0x8000
|-
|-
− | 3
+ | Protected heap
− | [[Certificate chain|Shared certs]] (optional)
+ | 20209020
− | ?
− | Arbitrary
+ | 0x4000
− | 32
|-
|-
− | 4
+ | Open heap
− | ES Error
+ | 13600000
− | Out
+ | ?
− | 0x20 (of which only the first 4 bytes are used)
+ | 0x18000
− |}
|}
+
+==== Apr 2 2012 14:03:54 ====
+
+Wii U vWii variant of [[#Jun 3 2009 07:49:09|Jun 3 2009 07:49:09]], with the normal [[#vWii note|vWii changes]]. Also has the changes to 0x41 and 0x42 from [[#Feb 27 2012 14:39:56|Feb 27 2012 14:39:56]]. Used by [[IOS56]], [[IOS57]], [[IOS58]], and [[IOS80]].
{| class="wikitable"
{| class="wikitable"
− |+ Command
+ ! SHA-1
− ! Offset
+ | colspan="3"| 43cbc9d451df6296214347f8a33349b2dda843f0
− ! Type
+ |-
− ! Name
+ ! Thing
+ ! Virtual address
+ ! Physical address
+ ! Size
+ |-
+ | Code (and entry point)
+ | 20200000
+ | 139B0000
+ | 0x800C
|-
|-
− | 0
+ | Data (ES vars)
− | u8
+ | 20209000
− | Command (0x93)
+ | 139B9000
+ | 0x140
|-
|-
− | 4
+ | BSS (zero'd)
− | off_t
+ | 2020A000
− | Partition offset
+ | 139BA000
− |- {{partial2}}
+ | 0x2BDC4
− | 4
+ |-
− | runopenpartparam*
+ | Stack
− | params
+ | 2022ddc4
− |- {{partial2}}
+ | ?
− | 8
+ | 0x8000
− | u32 *
+ |-
− | ES error output
+ | Protected heap
+ | 2020a020
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
|}
|}
−==== Apr 3 2012 12:50:03 ====
−A second Wii U vWii variant of [[#Jun 3 2009 07:49:09|Jun 3 2009 07:49:09]], with the normal [[#vWii note|vWii changes]] (and no other changes other than the timestamp). Also has the changes to 0x41 and 0x42 from [[#Feb 27 2012 14:39:56|Feb 27 2012 14:39:56]]. Used exclusively by the three versions of [[IOS59]].
−=== 0x94 DVDLowOpenPartitionWithTmdAndTicketView ===
+{| class="wikitable"
− ! SHA-1
− | colspan="3"| e961f817c53ad3d87af96635df99bc6ee70ed056
− |-
− ! Thing
− ! Virtual address
− ! Physical address
− |+ Vector
− ! Index
− ! Name
− ! Direction
! Size
! Size
− |-
|-
− | 0
+ | Code (and entry point)
− | Command
+ | 20200000
− | In
+ | 139B0000
− | 0x20
+ | 0x800C
− |-
|-
− | 1
+ | Data (ES vars)
− | 20209000
− | In
+ | 139B9000
− | 0x98 if present, not checked if absent (should be 0)
+ | 0x140
− | 32
|-
|-
− | 2
+ | BSS (zero'd)
− | 2020A000
− | In
+ | 139BA000
− | Arbitrary
+ | 0x2BDC4
− | 32
|-
|-
− | 3
+ | Stack
− | [[Certificate chain|Shared certs]] (optional)
+ | 2022ddc4
− | ?
− | Arbitrary
+ | 0x8000
− | 32
|-
|-
− | 4
+ | Protected heap
− | ES Error
+ | 2020a020
− | Out
+ | ?
− | 0x20 (of which only the first 4 bytes are used)
+ | 0x4000
− | 4
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
|}
|}
+
+==== Apr 3 2012 13:00:48 ====
+
+Wii U vWii variant of [[#Feb 27 2012 14:39:56|Feb 27 2012 14:39:56]], with the normal [[#vWii note|vWii changes]] (and no other changes other than the timestamp, though to be clear it does have the changed 0x41 and 0x42). Used exclusively by the three versions of [[IOS62]].
{| class="wikitable"
{| class="wikitable"
− |+ Command
+ ! SHA-1
− ! Offset
+ | colspan="3"| 86bec5ad6815c2bf1f154690f2abd0e6141f0f8b
− ! Type
+ |-
− ! Name
+ ! Thing
+ ! Virtual address
+ ! Physical address
+ ! Size
|-
|-
− | 0
+ | Code (and entry point)
− | u8
+ | 20200000
− | Command (0x94)
+ | 139B0000
+ | 0x800C
|-
|-
− | 4
+ | Data (ES vars)
− | off_t
+ | 20209000
− | Partition offset
+ | 139B9000
− |- {{partial2}}
+ | 0x140
− | 4
+ |-
− | runopenpartparam*
+ | BSS (zero'd)
− | params (see above)
+ | 2020A000
− |- {{partial2}}
+ | 139BA000
− | 8
+ | 0x2BDC4
− | u32 *
+ |-
− | ES error output
+ | Stack
+ | 2022ddc4
+ | ?
+ | 0x8000
+ |-
+ | Protected heap
+ | 2020a020
+ | ?
+ | 0x4000
+ |-
+ | Open heap
+ | 13600000
+ | ?
+ | 0x18000
|}
|}
−== Ioctls ==
+== IoctlVs ==
−An incorrect size or alignment, or an incorrect in count or out count, will result in a return value of 0x80. Commands not listed here will cause a hang.
−Ioctls are implemented in two functions: DiIoctl and handleDiCommand. handleDiCommand is actually also used by IoctlV as well, and other than for DVDLowOpenPartition, IoctlV commands are accidentally exposed as Ioctls as well. The following commands are implemented in DiIoctl:
+IoctlVs and Ioctls both go to one shared function that actually handles them which takes a diCommand; IoctlV is used when there are multiple pointers being passed to simplify conversion from virtual to physical addresses (which happens on the PPC side in both Nintendo's and libogc's IoctlV function). The IoctlVs will modify the passed diCommand to have additional parameters, noted in yellow. This means that in some cases the Ioctl can be used directly.
−=== 0x8B DVDLowOpenPartition ===
−Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand.
−Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes, presense of tmd), and 0x40 for an ES error.
−This command will clear the error interrupt if it is set.
−{| class="wikitable"
− |+ Vector
− ! Index
−{| class="wikitable"
− |+ Command
− ! Type
! Name
! Name
+ ! Direction
+ ! Size
+ ! Alignment
|-
|-
| 0
| 0
− | u8
+ | Command
− | Command (0x12)
+ | In
− |}
+ | 0x20
− | 4
− |-
− | 1
− | [[Ticket]] (optional)
− | In
− | 0x2a4 if present, not checked if absent (should be 0)
− | 32
− |-
− | 2
− | [[Certificate chain|Shared certs]] (optional)
− | In
− | Arbitrary if present, not checked if absent (should be 0)
− | 32
− |+ Command
− |-
|-
− | 0
+ | 3
− | u8
+ | [[TMD]]
− | Command (0x70)
+ | Out
+ | 0x49e4
+ | 32
+ |-
+ | 4
+ | ES Error
+ | Out
+ | 0x20 (of which only the first 4 bytes are used)
+ | 4
|}
|}
−{| class="wikitable"
{| class="wikitable"
Line 1,551:
Line 1,521:
| 0
| 0
| u8
| u8
− | Command (0x71)
+ | Command (0x8B)
|-
|-
| 4
| 4
− | off_t
| off_t
− | Offset (bytes >> 2)
+ | Partition offset
+ |- {{partial2}}
+ | 8
+ | [[Ticket]]*
+ | Ticket
+ |- {{partial2}}
+ | 12
+ | size_t
+ | Shared certs size
+ |- {{partial2}}
+ | 16
+ | u8*
+ | Shared certs
+ |- {{partial2}}
+ | 20
+ | [[TMD]]*
+ | tmd
+ |- {{partial2}}
+ | 24
+ | u32*
+ | ES error output
|}
|}
−=== 0x79 DVDLowWaitForCoverClose ===
+=== <s>0x90 DVDLowGetNoDiscOpenPartitionParams</s> ===
−<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). System menu 4.3U (among other titles) still has a PPC-side implementation (815504c4) but this is not used (the higher-level function that calls it is gone due to not being referenced). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.
−{| class="wikitable"
− |+ Vector
− ! Index
−{| class="wikitable"
− |+ Command
− ! Type
! Name
! Name
+ ! Direction
+ ! Size
+ ! Alignment
|-
|-
| 0
| 0
− | u8
+ | Command
− | Command (0x79)
+ | In
− |}
+ | 0x20
− | 4
− |+ Command
− |-
|-
− | 0
+ | 1
− | u8
+ | [[TMD]] size pointer (not used)
− | Command (0x7A)
+ | In
− |}
+ | 4
− | 4 (32 on PPC side)
− |-
− | 2
− | [[Certificate chain|Shared certs]] size pointer (not used)
− | In
− | 4
− |+ Command
+ | 4 (32 on PPC side)
− |-
|-
− | 0
+ | 3
− | u8
+ | [[Ticket]]
− | Command (0x7E)
+ | Out
− |}
+ | 0x2A4
− | 32
− |-
− | 4
− | TMD size pointer (again; aliases with previous pointer)
− | Out
− | 4
− | 4 (32 on PPC side)
− |+ Command
− |-
|-
− | 0
+ | 5
− | u8
+ | [[TMD]]
− | Command (0x7F)
+ | Out
− |}
+ | TMD size, from before (i.e. *vector[4].data)
− | 32
− |-
|-
− | 0
+ | 6
− | u8
+ | Shared certs size pointer (again; aliases with the previous pointer)
− | Command (0x80)
+ | Out
+ | 4
+ | 4 (32 on PPC side)
|-
|-
| 7
| 7
− | u8
+ | Shared certs
− | Position(?)
+ | Out
+ | Shared certs size, from before (i.e. *vector[6].data)
+ | 32
+ |-
+ | 8
+ | Partition data offset pointer
+ | Out
+ | 4
+ | 4 (32 on PPC side)
+ |-
+ | 9
+ | H3 hashes
+ | Out
+ | 0x18000
+ | 32
|}
|}
−After validating sizes and alignments, the params field of the command is set to a stack-allocated structure:
− struct nodiscopenparams {
+ undefined4 unused1;
+ ticket * ticket; // Set to vector[3].data
+ undefined4 unused2;
+ size_t tmdSize; // Set to *vector[4].data
+ tmd * tmd; // Set to vector[5].data
+ size_t sharedCertsSize; // Set to *vector[6].data
+ byte * sharedCerts; // Set to vector[7].data
+ off_t partitionDataOffset; // Set to partitionOffset + partition->dataOffset after working
+ h3buffer * h3Hashes; // set to vector[9].data
+ }
−After executing at a lower level (see [[#0x90 DVDLowGetNoDiscOpenPartitionParams ioctl|§0x90 DVDLowGetNoDiscOpenPartitionParams ioctl]]), tmdSize, sharedCertsSize, and partitionDataOffset are written back to vectors 4, 6, and 8 respectively. (If an error occurs, all three are instead set to 0.)
−{| class="wikitable"
{| class="wikitable"
Line 1,677:
Line 1,645:
| 0
| 0
| u8
| u8
− | Command (0x81)
+ | Command (0x90)
|-
|-
− | 7
+ | 4
− | u8
+ | off_t
− | Position(?)
+ | Partition position (>> 2)
+ |- {{partial2}}
+ | 8
+ | nodiscopenparams*
+ | params
|}
|}
−=== 0x82 DVDLowReadDvdDiscKey ===
+=== <s>0x91 DVDLowNoDiscOpenPartition</s> ===
−<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). No PPC-side code exists for this command in any known title (it was never called, even in an unreachable in practice way, so the function was optimized out). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.
−{| class="wikitable"
− |+ Vector
− ! Index
− ! Name
− ! Direction
− ! Size
− ! Alignment
−{| class="wikitable"
− |+ Command
− ! Offset
− ! Type
− ! Name
|-
|-
| 0
| 0
− | u8
+ | Command
− | Command (0x82)
+ | In
+ | 0x20
+ | 4
+ |-
+ | 1
+ | [[Ticket]]
+ | In
+ | 0x2a4
+ | 32
|-
|-
− | 7
+ | 2
− | u8
+ | [[TMD]]
− | Position(?)
+ | In
− |}
+ | Not checked
− | 32
−=== 0x83 DVDLowGetLength ===
+ |-
− | 3
−Stores the last DILENGTH value into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned). Note that this doesn't directly read DILENGTH, but rather a separate value that is set when DILENGTH is set (and zero'd if a read error occurs on a command that uses DILENGTH; this means that this command cannot be used to get the amount of data still left to be transfered when the error happened).
+ | [[Certificate chain|Shared certs]]
− | In
−{| class="wikitable"
+ | Not checked
− |+ Command
+ | 32
− ! Offset
+ |-
− ! Type
+ | 4
− ! Name
+ | H3 hashes
− |-
+ | In
− | 0
+ | 0x18000
− | u8
+ | 32
− | Command (0x83)
+ |-
− |}
+ | 5
− | ES Error
−=== 0x84 Get DIIMMBUF ===
+ | Out
− | 4 (properly sized, unlike with regular open partition)
−Stores the current value of DIIMMBUF into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned).
+ | 4
− |}
−{| class="wikitable"
+ |+ Command
+After validating sizes and alignments, the params field of the command is set to a stack-allocated structure:
− ! Offset
+ ! Type
+ struct nodiscopenparams {
− ! Name
+ undefined4 unused1;
− |-
+ ticket * ticket; // Set to vector[1].data
− | 0
+ undefined4 unused2;
− | u8
+ size_t tmdSize; // Set to vector[2].size
− | Command (0x83)
+ tmd * tmd; // Set to vector[2].data
− |}
+ size_t sharedCertsSize; // Set to vector[3].size
+ byte * sharedCerts; // Set to vector[3].data
+ off_t partitionDataOffset; // Set by command
+ h3buffer * h3Hashes; // set to vector[4].data
+ }
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x91)
+ |-
+ | 4
+ | off_t
+ | Partition data offset
+ |- {{partial2}}
+ | 4
+ | nodiscopenparams*
+ | params
+ |- {{partial2}}
+ | 8
+ | u32 *
+ | ES error output (vector[5].data)
+ |}
+=== <s>0x92 DVDLowGetNoDiscBufferSizes</s> ===
+<strong>Dummied out on all current IOS versions</strong>; always returns 0x80. However, still usable as an Ioctl (which is probably unintended). System menu 4.3U (among other titles) still has a PPC-side implementation (815502b8) but this is not used (the higher-level function that calls it is gone due to not being referenced). The only version that has an implementation of it is [[#Jun 8 2007 18:17:09|Jun 8 2007 18:17:09]], which is no longer used by any IOS version.
+{| class="wikitable"
+ |+ Vector
+ ! Index
+ ! Name
+ ! Direction
+ ! Size
+ ! Alignment
+ |-
+ | 0
+ | Command
+ | In
+ | 0x20
+ | 4
+ |-
+ | 1
+ | [[TMD]] size pointer
+ | Out
+ | 4
+ | 4 (32 on ppc side)
+ |-
+ | 2
+ | [[Certificate chain|Shared certs]] size pointer
+ | Out
+ | 4
+ | 4 (32 on ppc side)
+ |}
+Both pointers must be non-zero. The ioctlv fills in additional parameters on the command.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x92)
+ |-
+ | 4
+ | off_t
+ | Partition position (>> 2)
+ |- {{partial2}}
+ | 8
+ | u32 *
+ | TMD Size out
+ |- {{partial2}}
+ | 12
+ | u32 *
+ | Cert Chain Size Out
+ |}
+=== 0x93 DVDLowOpenPartitionWithTmdAndTicket ===
+Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand. This function takes an already-read TMD and can take an already-read ticket, which means it can be faster since the ticket does not need to be read from the disc.
+Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes), and 0x40 for an ES error.
+This command will clear the error interrupt if it is set.
+{| class="wikitable"
+ |+ Vector
+ ! Index
+ ! Name
+ ! Direction
+ ! Size
+ ! Alignment
+ |-
+ | 0
+ | Command
+ | In
+ | 0x20
+ | 4
+ |-
+ | 1
+ | [[Ticket]] (optional)
+ | In
+ | 0x2a4 if present, not checked if absent (should be 0)
+ | 32
+ |-
+ | 2
+ | [[TMD]] (required)
+ | In
+ | Arbitrary
+ | 32
+ |-
+ | 3
+ | [[Certificate chain|Shared certs]] (optional)
+ | In
+ | Arbitrary
+ | 32
+ |-
+ | 4
+ | ES Error
+ | Out
+ | 0x20 (of which only the first 4 bytes are used)
+ | 4
+ |}
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x93)
+ |-
+ | 4
+ | off_t
+ | Partition offset
+ |- {{partial2}}
+ | 4
+ | runopenpartparam*
+ | params
+ |- {{partial2}}
+ | 8
+ | u32 *
+ | ES error output
+ |}
+After running, the first argument is a pointer to a (stack-allocated) structure used by this and 0x94:
+ struct runopenpartparam {
+ off_t position;
+ ticket * ticket; // Only used by 0x93
+ ticketview * ticketview; // Only used by 0x94
+ size_t tmdSize;
+ tmd * tmd;
+ size_t sharedCertsSize;
+ u8 * sharedCerts;
+ }
+=== 0x94 DVDLowOpenPartitionWithTmdAndTicketView ===
+Opens a partition, including verifying it through [[:/dev/es]] (the resulting [[:/dev/es#Error_codes|error code]] will be written to the specified location, even if it is 0). DVDLowReadDiskID needs to have been called beforehand. This function takes an already-read TMD and can take an already-read ticket ticket view, which means it can be faster since the ticket does not need to be read from the disc.
+Returns 0x80 if DVDLowReadDiskID has not been called, or a partition is already open, 0x20 if allocations fail or the partition does not pass some DI security checks (valid cert offset, valid tmd offset, presence of hashes), and 0x40 for an ES error.
+This command will clear the error interrupt if it is set.
+{| class="wikitable"
+ |+ Vector
+ ! Index
+ ! Name
+ ! Direction
+ ! Size
+ ! Alignment
+ |-
+ | 0
+ | Command
+ | In
+ | 0x20
+ | 4
+ |-
+ | 1
+ | Ticket View (optional)
+ | In
+ | 0x98 if present, not checked if absent (should be 0)
+ | 32
+ |-
+ | 2
+ | [[TMD]] (required)
+ | In
+ | Arbitrary
+ | 32
+ |-
+ | 3
+ | [[Certificate chain|Shared certs]] (optional)
+ | In
+ | Arbitrary
+ | 32
+ |-
+ | 4
+ | ES Error
+ | Out
+ | 0x20 (of which only the first 4 bytes are used)
+ | 4
+ |}
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x94)
+ |-
+ | 4
+ | off_t
+ | Partition offset
+ |- {{partial2}}
+ | 4
+ | runopenpartparam*
+ | params (see above)
+ |- {{partial2}}
+ | 8
+ | u32 *
+ | ES error output
+ |}
+== Ioctls ==
+Using a number not listed here results in a return value of 0x80. The input buffer must be sized 0x20 (except for command 0x8E). Unless otherwise noted, commands return 1 on success.
+Ioctls are implemented in two functions: DiIoctl and handleDiCommand. handleDiCommand is actually also used by IoctlV as well, and other than for DVDLowOpenPartition, IoctlV commands are accidentally exposed as Ioctls as well. The following commands are implemented in DiIoctl:
+{{collapse|title=Commands implemented in DiIoctl|text=
+<ul>
+<li>0x79 DVDLowWaitForCoverClose</li>
+<li>0x7A DVDLowGetCoverRegister</li>
+<li>0x83 DVDLowGetLength</li>
+<li>0x84 Get DIIMMBUF</li>
+<li>0x85 DVDLowMaskCoverInterrupt</li>
+<li>0x86 DVDLowClearCoverInterrupt</li>
+<li>0x87 DVDLowUnmaskStatusInterrupts</li>
+<li>0x88 DVDLowGetCoverStatus</li>
+<li>0x89 DVDLowUnmaskCoverInterrupt</li>
+<li>0x8B DVDLowOpenPartition ioctl</li>
+<li>0x8E DVDLowEnableDvdVideo</li>
+<li>0x95 DVDLowGetStatusRegister</li>
+<li>0x96 DVDLowGetControlRegister</li>
+</ul>
+}}
+Commands will clear the error interrupt by writing bit 2 of DISR if it is set after execution. Furthermore, the same check happens before execution, but this should generally not happen barring other code directly writing to the DI registers (a warning is logged in this case). These checks happen in handleDiCommand, so commands implemented in DiIoctl are not affected; additionally the second check is skipped for 0x8A DVDLowReset and 0xE0 DVDLowRequestError. In some versions, the second check will also issue a request error command to the drive (which, as a side effect, clears the error in the drive itself, which would break a second DVDLowRequestError — that explains why it is skipped).
+If an output buffer size check fails, DIMAR and DILENGTH will not be written, and there is code that sets the return value to 0x20. However, the driver still attempts to start the transfer, which will fail due to not writing DILENGTH (which should have counted back down 0 after any previous successful transfer{{check}}); this will result in an eventual timeout and returning of 0x10{{check}}. <!-- This seems completely wack, but it seems to be how the code works... -->
+=== 0x12 DVDLowInquiry ===
+Retrieves information about the drive verison; see [http://hitmen.c02.at/files/yagcd/yagcd/chap5.html#sec5.7.3.1 yagcd §5.7.3.1] for more info.
+The output buffer size must be ≥ 0x20, or DIMAR and DILENGTH will not be written. It must also be 32-bit aligned, or else the driver will hang.
+Note that YAGCD is incorrect and there is actually one additional byte after the drive date, [https://web.archive.org/web/20070602090342/http://www.crazynation.org/GC/GC_DD_TECH/GCTech.htm apparently] indicating the version. This is not new to the Wii.
+ DICMDBUF0 = 0x12000000
+ DILENGTH = 0x20
+ DIMAR = outbuf
+ DICMDBUF1 = 0
+ DICR = TSTART | DMA
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x12)
+ |}
+=== 0x70 DVDLowReadDiskID ===
+Reads the current disc ID and initializes the drive. Many other commands will not work before this (either by explicitly checking, or due to the drive returning error 0x05xxxxxx).
+This command cannot be used while the drive interface is resetting (if [[IOS/Syscalls|syscall]] 0x46 syscall_check_di_reset returns true); in which case it will return 0x80. 0x80 will also be returned if the output buffer is not 32-byte aligned.
+The output buffer size must be ≥ 0x20, or DIMAR and DILENGTH will not be written.
+ DICMDBUF0 = 0xA8000040
+ DICMDBUF1 = 0
+ DICMDBUF2 = 0x20
+ DILENGTH = 0x20
+ DIMAR = dest
+ DICR = TSTART | DMA
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x70)
+ |}
+After this command has finished reading, the driver will also look at the 4 bytes at offset 0x18 in the output (i.e. outbuf[6] if outbuf is a u32 array) for the Wii magicword 0x5D1C9EA3 to determine if it is a [[Wii Disc|Wii disc]]. If it is a Wii disc, and it has not already read it, it will read 0x44 (padded to 0x60) bytes starting at byte 0x20 (i.e. the game title, and the disable hashing and disable encryption flags). Thus, after the first call, DVDLowGetLength will return 0x60, and on later calls it will return 0x20.
+=== 0x71 DVDLowRead ===
+Reads and decrypts disc data. This command can only be used if hashing and encryption are enabled for the disc. DVDLowOpenPartition needs to have been called before for the keys to be read.
+The output buffer has no requirements on alignment, but will perform better if 32-byte aligned since it can avoid a copy from a buffer within the driver. Similarly, the offset and size can be any value, but ones that are sector-aligned (sizes that are multiples of 0x7C00 and offsets that are multiples of 0x1F00) avoid copies for the first and/or last sector that needs to be read and decrypted. Each individual sector is read using command 0xA8.
+This command immediately returns 0x20 if the buffer is too small, and also returns 0x20 if something went wrong with decryption or hashing and 2 for a drive error.
+If everything completed successfully, the last length value used by DVDLowGetLength is set to offset (almost certainly a mistake on Nintendo's end). Otherwise, it is set to 0.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x71)
+ |-
+ | 4
+ | size_t
+ | Size (bytes)
+ |-
+ | 8
+ | off_t
+ | Offset (bytes >> 2)
+ |}
+=== 0x79 DVDLowWaitForCoverClose ===
+Waits for a disc to be inserted; if there is already a disc inserted, it must be removed first. This command does not time out; if no disc is inserted, it will wait forever. (As such, I'm not entirely sure how it can be cancelled; I assume but have not checked that the Wii Fit Channel uses this when waiting for the Wii Fit disc to be inserted, but that can be canceled...)
+Continuously waits for a DI interrupt, and when it receives one it checks for the cover interrupt (bit 2 of DICVR); if it is set it then checks if the cover is closed (bit 0 of DICVR) and if sufficient time has ellapsed. It also clears the TC and error interrupts should they occur.
+The output buffer is not used, and it may be null. Its size is not checked.
+On completion, returns 0x4.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x79)
+ |}
+=== 0x7A DVDLowGetCoverRegister ===
+Stores the current value of DICVR into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned). Note that Nintendo titles also refer to this as DVDLowPrepareCoverRegister, but that function simply asynchronously reads it into game memory so that it can be accessed by a separate function later. (A similar name pattern is found for the other get-reg commands.)
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x7A)
+ |}
+=== 0x7E DVDLowNotifyReset ===
+Resets internal flags, closes the open partition (if there is one), clears the transfer complete interrupt and drive error interrupt, enables the transfer complete interrupt and error interrupt, and disables the cover interrupt.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x7E)
+ |}
+=== <s>0x7F DVDLowSetSpinupFlag</s> ===
+Prints the message "(handleDiCommand) DI_SET_SPINUP_FLAG_CMD should have been executed in the PPC shim layer only" and returns 0x80.
+The PPC-side simply stores a boolean which is later used as the parameter to DVDLowReset. For some reason, Nintendo decided to give it an ioctl number as well, even though it didn't need one.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x7F)
+ |}
+=== 0x80 DVDLowReadDvdPhysical ===
+Probably related to DVD-Video{{check}}.
+The output buffer size must be ≥ 0x800, or DIMAR and DILENGTH will not be written. The output buffer also needs to be 32-byte aligned, or else the driver will hang.
+ DICMDBUF0 = 0xAD000000 | (position << 8) // AD00XX00
+ DICMDBUF1 = 0
+ DICMDBUF2 = 0
+ DILENGTH = 0x800
+ DIMAR = dest
+ DICR = TSTART | DMA
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x80)
+ |-
+ | 7
+ | u8
+ | Position(?)
+ |}
+=== 0x81 DVDLowReadDvdCopyright ===
+Probably related to DVD-Video{{check}}.
+ DICMDBUF0 = 0xAD010000 | (position << 8) // AD01XX00
+ DICMDBUF1 = 0
+ DICMDBUF2 = 0
+ DICR = TSTART
+The contents of DIIMMBUF (u32) are written to the output buffer. The output buffer size is not checked, but 4 would be a sane value.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x81)
+ |-
+ | 7
+ | u8
+ | Position(?)
+ |}
+=== 0x82 DVDLowReadDvdDiscKey ===
+Probably related to DVD-Video{{check}}.
+The output buffer size must be ≥ 0x800, or DIMAR and DILENGTH will not be written. The output buffer also needs to be 32-byte aligned, or else the driver will hang.
+ DICMDBUF0 = 0xAD020000 | (position << 8) // AD02XX00
+ DICMDBUF1 = 0
+ DICMDBUF2 = 0
+ DILENGTH = 0x800
+ DIMAR = dest
+ DICR = TSTART | DMA
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x82)
+ |-
+ | 7
+ | u8
+ | Position(?)
+ |}
+=== 0x83 DVDLowGetLength ===
+Stores the last DILENGTH value into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned). Note that this doesn't directly read DILENGTH, but rather a separate value that is set when DILENGTH is set (and zero'd if a read error occurs on a command that uses DILENGTH; this means that this command cannot be used to get the amount of data still left to be transfered when the error happened).
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x83)
+ |}
+=== 0x84 Get DIIMMBUF ===
+Stores the current value of DIIMMBUF into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned).
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x83)
+ |}
+=== 0x85 DVDLowMaskCoverInterrupt ===
+Disables the cover interrupt by clearing bit 1 of DICVR (leaving bit zero unchanged). Does not clear the cover interrupt if it is currently asserted (does not write bit 2). Actual code is <code>DICVR = (DICVR & ~4 & ~2)</code>.
+Titles have a DVDLowMaskCoverInterrupt function that is dummied out to always return 1; this function is used by DVDInit in the exact same place that gamecube titles write <code>DICVR = 0</code> (which should be equivalent, as writes to bit 0 which indicates the cover status presumably do nothing{{check}}). However, since it is stubbed out, there is no way of being sure that 0x85 was actually used by that function.
+The output buffer is not used, and it may be null. Its size is not checked.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x85)
+ |}
+=== 0x86 DVDLowClearCoverInterrupt ===
+Clears the cover interrupt by writing bit 2 of DICVR (leaving the other bits unchanged).
+The output buffer is not used, and it may be null. Its size is not checked.
+{| class="wikitable"
+ |+ Command
+ ! Offset
+ ! Type
+ ! Name
+ |-
+ | 0
+ | u8
+ | Command (0x86)
+ |}
+=== <s>0x87 DVDLowUnmaskStatusInterrupts</s> ===
−Dummied out; does nothing (and always returns 1).
−Titles have a DVDLowUnmaskStatusInterrupts function that is dummied out to always return 1; this function is used by DVDInit in the exact same place that gamecube titles write <code>DISR = 0x2a</code> (which enables DEINTMASK, TCINTMASK, and BRKINTMASK, and does not clear any asserted interrupts). However, since it is stubbed out, there is no way of being sure that 0x87 was actually used by that function.
The output buffer is not used, and it may be null. Its size is not checked.
The output buffer is not used, and it may be null. Its size is not checked.
Line 1,756:
Line 2,293:
| 0
| 0
| u8
| u8
− | Command (0x85)
+ | Command (0x87)
|}
|}
−=== 0x86 DVDLowClearCoverInterrupt ===
+=== 0x88 DVDLowGetCoverStatus ===
−Checks the current cover status and stores the result into outbuf, which must be at least 4 bytes in size (or else 0x20 is returned).
−The output buffer is not used, and it may be null. Its size is not checked.
+The result is 0 right after a reset{{check}}, 1 if a disc is not inserted (bit 1 of DICVR set), and 2 if a disc is inserted (bit 1 of DICVR not set).
{| class="wikitable"
{| class="wikitable"
Line 1,773:
Line 2,310:
| 0
| 0
| u8
| u8
− | Command (0x86)
+ | Command (0x88)
− |}
|}
−=== 0x88 DVDLowGetCoverStatus ===
+=== 0x89 DVDLowUnmaskCoverInterrupt ===
−=== 0x89 Enable Cover Interrupt ===
+Enables the cover interrupt by setting bit 1 of DICVR (leaving bit zero unchanged). Does not clear the cover interrupt if it is currently asserted (does not write bit 2). Actual code is <code>DICVR = ((DICVR & ~4) | 2)</code>.
−Debug symbols list a function called DVDLowUnmaskCoverInterrupt, but no actual function remains as it was removed as unused (and even if it did still exist, it presumably would be dummied out to just return 1 as it is only 8 bytes). Therefore, there is no way to be certain that 0x89 actually was called DVDLowUnmaskCoverInterrupt, but it seems very likely based on DVDLowMaskCoverInterrupt.
The output buffer is not used, and it may be null. Its size is not checked.
The output buffer is not used, and it may be null. Its size is not checked.
Line 1,829:
Line 2,334:
=== 0x8A DVDLowReset ===
=== 0x8A DVDLowReset ===
−Resets the drive, using [[IOS/Syscalls|syscalls]] 0x44, 0x45, and 0x46. If a reset is already in progress (syscall_check_di_reset returns true), then it immediately calls syscall_deassert_di_reset; otherwise, it calls syscall_assert_di_reset, waits 12µs, and then calls syscall_deassert_di_reset. Afterwards, registers are reset in the same way as DVDLowNotifyReset other than the cover interrupt. The cover interrupt is temporarilly disabled during this process, but is reenabled afterwards if it was enabled before.
+Resets the drive, using [[IOS/Syscalls|syscalls]] 0x44, 0x45, and 0x46. If a reset is already in progress (check_di_reset returns true), then it immediately calls deassert_di_reset; otherwise, it calls assert_di_reset, waits 12µs, and then calls deassert_di_reset. Afterwards, registers are reset in the same way as DVDLowNotifyReset other than the cover interrupt. The cover interrupt is temporarilly disabled during this process, but is reenabled afterwards if it was enabled before.
Enable spinup is passed to syscall 0x4e, which activates the DI_SPIN [[Hardware/Hollywood_GPIOs|GPIO]] if it is 0 and disables it otherwise.
Enable spinup is passed to syscall 0x4e, which activates the DI_SPIN [[Hardware/Hollywood_GPIOs|GPIO]] if it is 0 and disables it otherwise.