diff --git a/src/userland/buffersTests/main.c b/src/userland/buffersTests/main.c
index 12cdef0..eff6473 100644
--- a/src/userland/buffersTests/main.c
+++ b/src/userland/buffersTests/main.c
@@ -1,39 +1,11 @@
 #include <hlib.h>
 #include <buffers.h>
 
-#define SAMPLE_2_ARRAY_CONTENT(X, S) \
-    X(INTEGER, 1) S \
-    X(STRING, "hi") S \
-    X(INTEGER, 500, Signed)
-
-#define SAMPLE_2(X) \
-    X(ARRAY, SAMPLE_2_ARRAY_CONTENT)
-
-#define SAMPLE_3_MAP_CONTENTS(X, S) \
-    X(INTEGER, 1) S \
-     X(ARRAY, SAMPLE_2_ARRAY_CONTENT) S \
-    X(STRING, "hello") S \
-     X(STRING, "world") S \
-    X(INTEGER, 2) S \
-     X(STRING, "Number 2") S \
-    X(STRING, "number") S \
-     X(INTEGER, 1)
-
-#define SAMPLE_3(X) \
-    X(MAP, SAMPLE_3_MAP_CONTENTS)
-
-uint32_t testFunction(void *data) {
-    GET(STRING, hello);
-    GET(INT, number);
-
-    printf("parameters: hello=%s, number=%i\n", hello, number);
-    free(hello);
-    return 0;
-}
+REQUEST(pciDump, "lspci", "dump");
 
 int32_t main() {
-    CREATE(test, SAMPLE_3);
-    msgPackDump(test);
-    testFunction(test);
-    free(test);
+    uintptr_t dataPhysical = pciDump(1, 0);
+    void *data = requestMemory(1, NULL, PTR(dataPhysical));
+    printf("pci data for device 1:\n");
+    msgPackDump(data);
 }
\ No newline at end of file

diff --git a/src/userland/buffersTests/main.c b/src/userland/buffersTests/main.c
index 12cdef0..eff6473 100644
--- a/src/userland/buffersTests/main.c
+++ b/src/userland/buffersTests/main.c
@@ -1,39 +1,11 @@
 #include <hlib.h>
 #include <buffers.h>
 
-#define SAMPLE_2_ARRAY_CONTENT(X, S) \
-    X(INTEGER, 1) S \
-    X(STRING, "hi") S \
-    X(INTEGER, 500, Signed)
-
-#define SAMPLE_2(X) \
-    X(ARRAY, SAMPLE_2_ARRAY_CONTENT)
-
-#define SAMPLE_3_MAP_CONTENTS(X, S) \
-    X(INTEGER, 1) S \
-     X(ARRAY, SAMPLE_2_ARRAY_CONTENT) S \
-    X(STRING, "hello") S \
-     X(STRING, "world") S \
-    X(INTEGER, 2) S \
-     X(STRING, "Number 2") S \
-    X(STRING, "number") S \
-     X(INTEGER, 1)
-
-#define SAMPLE_3(X) \
-    X(MAP, SAMPLE_3_MAP_CONTENTS)
-
-uint32_t testFunction(void *data) {
-    GET(STRING, hello);
-    GET(INT, number);
-
-    printf("parameters: hello=%s, number=%i\n", hello, number);
-    free(hello);
-    return 0;
-}
+REQUEST(pciDump, "lspci", "dump");
 
 int32_t main() {
-    CREATE(test, SAMPLE_3);
-    msgPackDump(test);
-    testFunction(test);
-    free(test);
+    uintptr_t dataPhysical = pciDump(1, 0);
+    void *data = requestMemory(1, NULL, PTR(dataPhysical));
+    printf("pci data for device 1:\n");
+    msgPackDump(data);
 }
\ No newline at end of file
diff --git a/src/userland/lspci/main.c b/src/userland/lspci/main.c
index cbc8975..7934528 100644
--- a/src/userland/lspci/main.c
+++ b/src/userland/lspci/main.c
@@ -132,12 +132,14 @@
 int32_t getBaseAddress(uint32_t deviceId, uint32_t n);
 int32_t enableBusMaster(uint32_t deviceId);
 int32_t getPCIInterrupt(uint32_t deviceId);
+uintptr_t dump(uint32_t device);
 
 void initializePci() {
     createFunction("getDeviceClass", (void *)getDeviceClass);
     createFunction("getBaseAddress", (void *)getBaseAddress);
     createFunction("enableBusMaster", (void *)enableBusMaster);
     createFunction("getInterrupt", (void *)getPCIInterrupt);
+    createFunction("dump", (void *)dump);
     if (!(pciConfigRead(0, 0, 0, 0x0E) & 0x80)) {
         checkBus(0);
     } else {
@@ -183,6 +185,31 @@
            0xFF;
 }
 
+#define DEVICE_DUMP_BARS(X, S) \
+    X(INTEGER, device->bar[0]) S \
+    X(INTEGER, device->bar[1]) S \
+    X(INTEGER, device->bar[2]) S \
+    X(INTEGER, device->bar[3]) S \
+    X(INTEGER, device->bar[4])
+
+#define DEVICE_DUMP_MAP_DATA(X, S) \
+    X(STRING, "bars") S \
+     X(ARRAY, DEVICE_DUMP_BARS) S \
+    X(STRING, "class") S \
+     X(INTEGER, device->class << 16 | device->subclass << 8 | device->programmingInterface)
+
+#define DEVICE_DUMP(X) X(MAP, DEVICE_DUMP_MAP_DATA)
+
+uintptr_t dump(uint32_t deviceId) {
+    GET_HEADER
+    CREATE(data, DEVICE_DUMP);
+    void *resultBuffer = requestMemory(1, NULL, NULL);
+    memcpy(data, resultBuffer, dataLength);
+    uint32_t result = U32(getPhysicalAddress(resultBuffer));
+    free(resultBuffer);
+    return result;
+}
+
 int32_t main() {
     if (!initialized) {
         initializePci();