Add DMA enablement tests by vnarapar · Pull Request #296 · qualcomm-linux/qcom-linux-testkit

vnarapar · 2026-02-15T18:02:51Z

Added the tests to check DMA configs, Device Tree Validation and upstream kselftests

Srikanth Muppandam (smuppand) · 2026-03-24T00:56:42Z

This one should be split into 3 commits, unlike the simple one commit and one-testcase PR. It currently combines:

library/helper addition
presence-style dmabuf testcase
functional dmabuf heap kselftest runner

Srikanth Muppandam (smuppand) · 2026-03-26T06:19:02Z

This one should be split into 3 commits, unlike the simple one commit and one-testcase PR. It currently combines:
library/helper addition
presence-style dmabuf testcase
functional dmabuf heap kselftest runner

This should still be split into 3 commits. Also address the structural commensts. The PR is 1 commit / 7 files / 3 logical chunks

Srikanth Muppandam (smuppand)

Kindly close the comments that have been addressed with the updated patches.

Srikanth Muppandam (smuppand) · 2026-05-22T11:28:41Z

I noticed that previous comments haven't been marked as resolved. Please close the comments that have been addressed and take care of any outstanding ones.

vnarapar · 2026-06-01T08:23:26Z

Srikanth Muppandam (@smuppand) all comments are addressed.
FYI, shellcheck errors are not from this PR.

Srikanth Muppandam (smuppand) · 2026-06-07T03:57:50Z

vnarapar, please rebase and apply the small fixes mentioned above.

github-actions · 2026-07-12T02:17:49Z

@ualcomm/qualcomm-linux-testing.triage This pull request has been marked as stale due to 30 days of inactivity and will automatically close after an additional 5 days.

github-actions · 2026-08-21T02:03:42Z

@ualcomm/qualcomm-linux-testing.triage This pull request has been marked as stale due to 30 days of inactivity and will automatically close after an additional 5 days.

Add the helper function to check kernel optional config Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

This test validates the DMA-BUF subsystem configuration on Qualcomm platforms, including kernel configuration, device tree setup, and system interfaces Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

Runs the `dmabuf-heap` binary from the Linux kernel selftests suite to validate DMA-BUF heap functionality Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

Srikanth Muppandam (smuppand) · 2026-08-24T10:30:16Z

+ OPTIONAL_CONFIGS="CONFIG_TEE_DMABUF_HEAPS CONFIG_HAS_DMA CONFIG_DMA_HEAP CONFIG_DMA_CMA"
+
+ log_info "Checking optional DMA-BUF configurations..."
+ if ! check_optional_config "$OPTIONAL_CONFIGS"; then


optional configs still fail the testcase, Keep optional configuration checks warning-only. Log the missing optional symbols, but do not change the final verdict.

Srikanth Muppandam (smuppand) · 2026-08-24T10:30:52Z

+ done
+fi
+
+if check_dt_nodes "/proc/device-tree/soc*/dma* /proc/device-tree/soc*/qcom,ion* /proc/device-tree/ion*"; then


generic DMA nodes are required as DMA-BUF proof. Make this informational, or validate only a clearly documented platform-specific heap binding. The functional requirement should remain the heap device and, when available, the upstream kselftest.

Srikanth Muppandam (smuppand) · 2026-08-24T10:31:45Z

+log_info " Skipped: $skip_count"
+log_info " Errors: $error_count"
+
+if [ "$pass_count" -eq 0 ] && [ "$skip_count" -eq 0 ]; then


all-skipped kselftest becomes PASS. Emit top-level SKIP when pass_count=0 and skip_count>0. Reserve PASS for at least one executed successful test and no failure or error.

Srikanth Muppandam (smuppand) · 2026-08-24T10:32:42Z

+ log_info "DMA-BUF buffer information:"
+
+ # Count total buffers
+ total_bufs=$(grep -c "^Dma-buf" /sys/kernel/debug/dma_buf/bufinfo 2>/dev/null || echo 0)


duplicated zero output from grep -c
Use grep -c ... || true, then normalize the captured result once.

Srikanth Muppandam (smuppand) · 2026-08-24T10:33:21Z

+### 2. Device Tree Validation
+- Reserved memory nodes (`/proc/device-tree/reserved-memory`) - informational
+- Platform-specific DMA heap nodes
+- Memory region sizes and configurations


documentation claims unimplemented DT detail
Narrow the README to informational region enumeration or implement the stated parsing.

vnarapar requested a review from Srikanth Muppandam (smuppand)February 15, 2026 19:17

Srikanth Muppandam (smuppand) requested changes Feb 16, 2026
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vnarapar force-pushed the dmabuf branch 4 times, most recently from 90efb69 to 6b50d76Compare March 23, 2026 12:47

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vnarapar force-pushed the dmabuf branch from 6b50d76 to 0131108Compare April 5, 2026 18:14

vnarapar changed the title ~~Added tests for dmabuf validations~~Add DMA enablement testsApr 5, 2026

vnarapar force-pushed the dmabuf branch from 0131108 to 5479d21Compare April 5, 2026 18:37

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vnarapar requested a review from Srikanth Muppandam (smuppand)June 11, 2026 07:29

github-actionsBot added the Stale label Jul 12, 2026

github-actionsBot closed this Jul 18, 2026

vnarapar reopened this Jul 20, 2026

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vnarapar added 3 commits August 24, 2026 14:32

Add helper functions
f499264
Add the helper function to check kernel optional config Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

Add dmabuf functional usecase
844c170
This test validates the DMA-BUF subsystem configuration on Qualcomm platforms, including kernel configuration, device tree setup, and system interfaces Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

Add dmabuf kselftest usecase
b21c24c
Runs the `dmabuf-heap` binary from the Linux kernel selftests suite to validate DMA-BUF heap functionality Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

vnarapar force-pushed the dmabuf branch from 1493603 to b21c24cCompare August 24, 2026 09:03

Srikanth Muppandam (smuppand) requested changes Aug 24, 2026
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github-actionsBot removed the Stale label Aug 25, 2026

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Srikanth Muppandam (smuppand) commented Mar 24, 2026•
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