intel_extreme: Take a register dump for intel_reg

src/add-ons/accelerants/intel_extreme/accelerant.cpp

@@ -37,6 +37,7 @@
 
 
 struct accelerant_info* gInfo;
+uint32 gDumpCount;
 
 
 class AreaCloner {
@@ -89,6 +90,36 @@ AreaCloner::Keep()
 //	#pragma mark -
 
 
+// intel_reg --mmio=ie-0001.bin --devid=27a2 dump
+void
+dump_registers()
+{
+	char filename[255];
+
+	sprintf(filename, "/boot/system/cache/tmp/ie-%04" B_PRId32 ".bin",
+		gDumpCount);
+
+	ERROR("%s: Taking register dump #%" B_PRId32 "\n", __func__, gDumpCount);
+
+	int fd = open(filename, O_CREAT | O_WRONLY, 0644);
+	uint32 data = 0;
+	if (fd >= 0) {
+		for (int32 i = 0; i < 0x80000; i += sizeof(data)) {
+			//char line[512];
+			//int length = sprintf(line, "%05" B_PRIx32 ": "
+			//	"%08" B_PRIx32 " %08" B_PRIx32 " %08" B_PRIx32 " %08" B_PRIx32 "\n",
+			//	i, read32(i), read32(i + 4), read32(i + 8), read32(i + 12));
+			data = read32(i);
+			write(fd, &data, sizeof(data));
+		}
+		close(fd);
+		sync();
+	}
+
+	gDumpCount++;
+}
+
+
 /*! This is the common accelerant_info initializer. It is called by
 	both, the first accelerant and all clones.
 */
@@ -97,6 +128,9 @@ init_common(int device, bool isClone)
 {
 	// initialize global accelerant info structure
 
+	// Number of register dumps we have... taken.
+	gDumpCount = 0;
+
 	gInfo = (accelerant_info*)malloc(sizeof(accelerant_info));
 	if (gInfo == NULL)
 		return B_NO_MEMORY;

src/add-ons/accelerants/intel_extreme/accelerant.h

@@ -101,6 +101,7 @@ write32(uint32 encodedRegister, uint32 value)
 		+ REGISTER_REGISTER(encodedRegister)) = value;
 }
 
+void dump_registers(void);
 
 // dpms.cpp
 extern void enable_display_plane(bool enable);

src/add-ons/accelerants/intel_extreme/mode.cpp

@@ -470,27 +470,12 @@ intel_set_display_mode(display_mode* mode)
 	// This would avoid the screen being off when switching workspaces when they
 	// have the same resolution.
 
-#if 0
-static bool first = true;
-if (first) {
-	int fd = open("/boot/home/ie_.regs", O_CREAT | O_WRONLY, 0644);
-	if (fd >= 0) {
-		for (int32 i = 0; i < 0x80000; i += 16) {
-			char line[512];
-			int length = sprintf(line, "%05lx: %08lx %08lx %08lx %08lx\n",
-				i, read32(i), read32(i + 4), read32(i + 8), read32(i + 12));
-			write(fd, line, length);
-		}
-		close(fd);
-		sync();
-	}
-	first = false;
-}
-#endif
-
 	intel_shared_info &sharedInfo = *gInfo->shared_info;
 	Autolock locker(sharedInfo.accelerant_lock);
 
+	// First register dump
+	dump_registers();
+
 	// TODO: This may not be neccesary
 	set_display_power_mode(B_DPMS_OFF);
 
@@ -640,6 +625,9 @@ if (first) {
 	set_frame_buffer_base();
 		// triggers writing back double-buffered registers
 
+	// Second register dump
+	dump_registers();
+
 	return B_OK;
 }