1 files changed, 91 insertions, 0 deletions
diff --git a/lib/intel_mmio.c b/lib/intel_mmio.c
new file mode 100644
index 00000000..faaeeef6
--- /dev/null
+++ b/lib/intel_mmio.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#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"
+
+void *mmio;
+
+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(struct pci_device *pci_dev)
+{
+	uint32_t devid;
+	int mmio_bar;
+	int err;
+
+	devid = pci_dev->device_id;
+	if (IS_9XX(devid))
+		mmio_bar = 0;
+	else
+		mmio_bar = 1;
+
+	err = pci_device_map_range (pci_dev,
+				    pci_dev->regions[mmio_bar].base_addr,
+				    pci_dev->regions[mmio_bar].size,
+				    PCI_DEV_MAP_FLAG_WRITABLE,
+				    &mmio);
+
+	if (err != 0) {
+		fprintf(stderr, "Couldn't map MMIO region: %s\n",
+			strerror(err));
+		exit(1);
+	}
+}
+