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arm: apple: rtkit: Add default buffer handlers

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For devices without specific buffer methods, just assume we can give
them raw memory pointers when they request a buffer.

Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
This commit is contained in:
Hector Martin
2025-04-20 13:58:04 +02:00
committed by Tom Rini
parent 72bc04b874
commit 89cb15788a
1 changed files with 15 additions and 1 deletions
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16
arch/arm/mach-apple/rtkit.c
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@@ -11,6 +11,7 @@
#include <linux/apple-mailbox.h>
#include <linux/bitfield.h>
#include <linux/errno.h>
#include <linux/sizes.h>
#include <linux/types.h>
#define APPLE_RTKIT_EP_MGMT 0
@@ -97,6 +98,13 @@ void apple_rtkit_free(struct apple_rtkit *rtk)
rtk->shmem_destroy(rtk->cookie, &rtk->crashlog_buffer);
if (rtk->ioreport_buffer.buffer)
rtk->shmem_destroy(rtk->cookie, &rtk->ioreport_buffer);
} else {
if (rtk->syslog_buffer.buffer)
free(rtk->syslog_buffer.buffer);
if (rtk->crashlog_buffer.buffer)
free(rtk->crashlog_buffer.buffer);
if (rtk->ioreport_buffer.buffer)
free(rtk->ioreport_buffer.buffer);
}
free(rtk);
}
@@ -131,7 +139,7 @@ static int rtkit_handle_buf_req(struct apple_rtkit *rtk, int endpoint, struct ap
buf->dva = FIELD_GET(APPLE_RTKIT_BUFFER_REQUEST_IOVA, msg->msg0);
buf->size = num_4kpages << 12;
buf->is_mapped = false;
buf->is_mapped = !!buf->dva;
if (rtk->shmem_setup) {
ret = rtk->shmem_setup(rtk->cookie, buf);
@@ -140,6 +148,12 @@ static int rtkit_handle_buf_req(struct apple_rtkit *rtk, int endpoint, struct ap
endpoint);
return ret;
}
} else if (!buf->is_mapped){
buf->buffer = memalign(SZ_16K, ALIGN(buf->size, SZ_16K));
if (!buf->buffer)
return -ENOMEM;
buf->dva = (u64)buf->buffer;
}
if (!buf->is_mapped) {