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[RFC]align mismatch ABI in info.h#1929

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xiulipan wants to merge 2 commits into from
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[RFC]align mismatch ABI in info.h #1929

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bf08f08
ASoC: SOF: add probe support extend data
xiulipan Mar 24, 2020
d134201
ASoC: SOF: add debug ABI version
xiulipan Mar 24, 2020
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20 changes: 20 additions & 0 deletions include/sound/sof/info.h
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Original file line numberDiff line numberDiff line change
Expand Up@@ -31,6 +31,8 @@ enum sof_ipc_ext_data {
SOF_IPC_EXT_UNUSED = 0,
SOF_IPC_EXT_WINDOW = 1,
SOF_IPC_EXT_CC_INFO = 2,
SOF_IPC_EXT_PROBE_INFO = 3,

@kv2019ikv2019iMar 24, 2020

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@lgirdwood@jajanusz It really would be better to do the kernel PRs at the same time and have the person doing the change write a git commit message that explains the change. This "late-bound" sync of changes to kernel is not fun. Thanks for @xiulipan doing the patch, but I again have to ask for some improvements to the commit message:

  • "add support for probe extended data"
  • add explanation to commit body about the feature.. you should be able to copy this from the FW commit

@plbossartplbossartMar 24, 2020

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agree with @kv2019i , this is a complete fail of the ABI change process.

@lgirdwoodlgirdwoodMar 25, 2020

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The kernel and FW PRs must be done together and mention each other. It is up to maintainers to label as ABI and then to align both PRs using the classifier. So this is several steps taken by at least 3 people and is not being fully processed by everybody.

I am now wondering whether we should now be moving to a ABI minor bump only for every FW release (when the regular FW releases start soon). This would allow the kernel team to plan each merge window in advance to a specific FW version. @lbetlej fyi - regular FW releases would help here.
There is also complexity about bumping ABI in relation to kernel releases and FW releases. i.e. when do we close the ABI minor merge window for new kernel and FW releases (and use the next minor).

SOF_IPC_EXT_USER_ABI_INFO = 4,
};

/* FW version - SOF_IPC_GLB_VERSION */
Expand DownExpand Up@@ -114,4 +116,22 @@ struct sof_ipc_cc_version {
char desc[]; /* null terminated compiler description */
} __packed;

/* extended data: Probe setup */
struct sof_ipc_probe_support {
struct sof_ipc_ext_data_hdr ext_hdr;

uint32_t probe_points_max;
uint32_t injection_dmas_max;

/* reserved for future use */
uint32_t reserved[2];
} __packed;

/* extended data: user abi version(s) */
struct sof_ipc_user_abi_version {

@kv2019ikv2019iMar 24, 2020

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"user abi" is a bit weird name, but alas this was already merged to FW, so it's what it is.

struct sof_ipc_ext_data_hdr ext_hdr;

uint32_t abi_dbg_version;
} __packed;

#endif
2 changes: 1 addition & 1 deletion include/uapi/sound/sof/abi.h
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Expand Up@@ -26,7 +26,7 @@

/* SOF ABI version major, minor and patch numbers */
#define SOF_ABI_MAJOR 3
#define SOF_ABI_MINOR 13
#define SOF_ABI_MINOR 14
#define SOF_ABI_PATCH 0

/* SOF ABI version number. Format within 32bit word is MMmmmppp */
Expand Down