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| author | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2019-08-26 08:57:01 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-12 01:27:00 +0200 |
| commit | 587164cd593c2cbdad376179f85159e31221989e (patch) | |
| tree | 609a1b44413b4dac02a2d88f55641e45793bde35 /arch/powerpc | |
| parent | powerpc/powernv: Enhance opal message read interface (diff) | |
| download | linux-587164cd593c2cbdad376179f85159e31221989e.tar.xz linux-587164cd593c2cbdad376179f85159e31221989e.zip | |
powerpc/powernv: Add new opal message type
We have OPAL_MSG_PRD message type to pass prd related messages from
OPAL to `opal-prd`. It can handle messages upto 64 bytes. We have a
requirement to send bigger than 64 bytes of data from OPAL to
`opal-prd`. Lets add new message type (OPAL_MSG_PRD2) to pass bigger
data.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
[mpe: Make the error string clear that it's the PRD2 event that failed]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190826065701.8853-2-hegdevasant@linux.vnet.ibm.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/opal-api.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-prd.c | 8 |
2 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index 383242eb0dea..1cad413e1e0e 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -453,6 +453,7 @@ enum opal_msg_type { OPAL_MSG_DPO = 5, OPAL_MSG_PRD = 6, OPAL_MSG_OCC = 7, + OPAL_MSG_PRD2 = 8, OPAL_MSG_TYPE_MAX, }; diff --git a/arch/powerpc/platforms/powernv/opal-prd.c b/arch/powerpc/platforms/powernv/opal-prd.c index e072bf157d62..45f4223a790f 100644 --- a/arch/powerpc/platforms/powernv/opal-prd.c +++ b/arch/powerpc/platforms/powernv/opal-prd.c @@ -342,7 +342,7 @@ static int opal_prd_msg_notifier(struct notifier_block *nb, int msg_size, item_size; unsigned long flags; - if (msg_type != OPAL_MSG_PRD) + if (msg_type != OPAL_MSG_PRD && msg_type != OPAL_MSG_PRD2) return 0; /* Calculate total size of the message and item we need to store. The @@ -393,6 +393,12 @@ static int opal_prd_probe(struct platform_device *pdev) return rc; } + rc = opal_message_notifier_register(OPAL_MSG_PRD2, &opal_prd_event_nb); + if (rc) { + pr_err("Couldn't register PRD2 event notifier\n"); + return rc; + } + rc = misc_register(&opal_prd_dev); if (rc) { pr_err("failed to register miscdev\n"); |