[PATCH v8 4/8] firmware: test partial file reads of request_firmware_into_buf

[Scott Branden]

Add firmware tests for partial file reads of request_firmware_into_buf.

Signed-off-by: Scott Branden <scott.bran...@broadcom.com>
---
 .../selftests/firmware/fw_filesystem.sh       | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)

diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh 
b/tools/testing/selftests/firmware/fw_filesystem.sh
index fcc281373b4d..afc2e469ac06 100755
--- a/tools/testing/selftests/firmware/fw_filesystem.sh
+++ b/tools/testing/selftests/firmware/fw_filesystem.sh
@@ -149,6 +149,26 @@ config_unset_into_buf()
        echo 0 >  $DIR/config_into_buf
 }
 
+config_set_buf_size()
+{
+       echo $1 >  $DIR/config_buf_size
+}
+
+config_set_file_offset()
+{
+       echo $1 >  $DIR/config_file_offset
+}
+
+config_set_partial()
+{
+       echo 1 >  $DIR/config_partial
+}
+
+config_unset_partial()
+{
+       echo 0 >  $DIR/config_partial
+}
+
 config_set_sync_direct()
 {
        echo 1 >  $DIR/config_sync_direct
@@ -207,6 +227,35 @@ read_firmwares()
        done
 }
 
+read_partial_firmwares()
+{
+       if [ "$(cat $DIR/config_into_buf)" == "1" ]; then
+               fwfile="${FW_INTO_BUF}"
+       else
+               fwfile="${FW}"
+       fi
+
+       if [ "$1" = "xzonly" ]; then
+               fwfile="${fwfile}-orig"
+       fi
+
+       # Strip fwfile down to match partial offset and length
+       partial_data="$(cat $fwfile)"
+       partial_data="${partial_data:$2:$3}"
+
+       for i in $(seq 0 3); do
+               config_set_read_fw_idx $i
+
+               read_firmware="$(cat $DIR/read_firmware)"
+
+               # Verify the contents are what we expect.
+               if [ $read_firmware != $partial_data ]; then
+                       echo "request #$i: partial firmware was not loaded" >&2
+                       exit 1
+               fi
+       done
+}
+
 read_firmwares_expect_nofile()
 {
        for i in $(seq 0 3); do
@@ -319,6 +368,21 @@ test_batched_request_firmware_into_buf()
        echo "OK"
 }
 
+test_batched_request_partial_firmware_into_buf()
+{
+       echo -n "Batched request_partial_firmware_into_buf() $2 off=$3 size=$4 
try #$1: "
+       config_reset
+       config_set_name $TEST_FIRMWARE_INTO_BUF_FILENAME
+       config_set_into_buf
+       config_set_partial
+       config_set_buf_size $4
+       config_set_file_offset $3
+       config_trigger_sync
+       read_partial_firmwares $2 $3 $4
+       release_all_firmware
+       echo "OK"
+}
+
 test_batched_request_firmware_direct()
 {
        echo -n "Batched request_firmware_direct() $2 try #$1: "
@@ -371,6 +435,22 @@ for i in $(seq 1 5); do
        test_batched_request_firmware_into_buf $i normal
 done
 
+for i in $(seq 1 5); do
+       test_batched_request_partial_firmware_into_buf $i normal 0 10
+done
+
+for i in $(seq 1 5); do
+       test_batched_request_partial_firmware_into_buf $i normal 0 5
+done
+
+for i in $(seq 1 5); do
+       test_batched_request_partial_firmware_into_buf $i normal 1 6
+done
+
+for i in $(seq 1 5); do
+       test_batched_request_partial_firmware_into_buf $i normal 2 10
+done
+
 for i in $(seq 1 5); do
        test_batched_request_firmware_direct $i normal
 done
-- 
2.17.1