[Intel-gfx] [PATCH] intel_reg_dumper: Add support for reading register dumps from files

[Adam Jackson]

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 lib/intel_gpu_tools.c    |   27 +++++++++++++++++++++++++++
 lib/intel_gpu_tools.h    |    1 +
 tools/intel_reg_dumper.c |    7 +++++--
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/lib/intel_gpu_tools.c b/lib/intel_gpu_tools.c
index 6c85d2a..a699ae8 100644
--- a/lib/intel_gpu_tools.c
+++ b/lib/intel_gpu_tools.c
@@ -25,12 +25,17 @@
  *
  */
 
+#include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <errno.h>
 #include <err.h>
 #include <assert.h>
 #include <sys/ioctl.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
 #include "intel_gpu_tools.h"
 #include "i915_drm.h"
 #include "intel_batchbuffer.h"
@@ -83,6 +88,28 @@ intel_get_pci_device(void)
 }
 
 void
+intel_map_file(char *file)
+{
+	int fd;
+	struct stat st;
+
+	fd = open(file, O_RDWR);
+	if (fd == -1) {
+		    fprintf(stderr, "Couldn't open %s: %s\n", file,
+			    strerror(errno));
+		    exit(1);
+	}
+	fstat(fd, &st);
+	mmio = mmap(NULL, st.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+	if (mmio == MAP_FAILED) {
+		    fprintf(stderr, "Couldn't mmap %s: %s\n", file,
+			    strerror(errno));
+		    exit(1);
+	}
+	close(fd);
+}
+
+void
 intel_get_mmio(void)
 {
 	int mmio_bar;
diff --git a/lib/intel_gpu_tools.h b/lib/intel_gpu_tools.h
index 07340cc..259fd9a 100644
--- a/lib/intel_gpu_tools.h
+++ b/lib/intel_gpu_tools.h
@@ -56,3 +56,4 @@ void intel_get_drm_devid(int fd);
 void intel_copy_bo(struct intel_batchbuffer *batch,
 		   drm_intel_bo *dst_bo, drm_intel_bo *src_bo,
 		   int width, int height);
+void intel_map_file(char *);
diff --git a/tools/intel_reg_dumper.c b/tools/intel_reg_dumper.c
index d3eec1d..8a9cf7a 100644
--- a/tools/intel_reg_dumper.c
+++ b/tools/intel_reg_dumper.c
@@ -1658,9 +1658,12 @@ intel_dump_regs(void)
 
 int main(int argc, char** argv)
 {
-	intel_get_mmio();
+	if (argc == 2)
+		intel_map_file(argv[1]);
+	else
+		intel_get_mmio();
 
-	if (HAS_PCH_SPLIT(devid))
+	if (HAS_PCH_SPLIT(devid) || getenv("HAS_PCH_SPLIT"))
 		ironlake_dump_regs();
 	else
 		intel_dump_regs();
-- 
1.6.5.2