Port intel_idle from 2D driver as intel_gpu_top with a better interface.

1 files changed, 84 insertions, 0 deletions

diff --git a/lib/intel_gpu_tools.c b/lib/intel_gpu_tools.c
new file mode 100644
index 00000000..337777fc
--- /dev/null
+++ b/lib/intel_gpu_tools.c
@@ -0,0 +1,84 @@
+/*
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+#include "intel_gpu_tools.h"
+#include "intel_chipset.h"
+
+struct pci_device *pci_dev;
+uint32_t devid;
+void *mmio;
+
+void
+intel_get_mmio(void)
+{
+	int err;
+	int mmio_bar;
+
+	err = pci_system_init();
+	if (err != 0) {
+		fprintf(stderr, "Couldn't initialize PCI system: %s\n",
+			strerror(err));
+		exit(1);
+	}
+
+	/* Grab the graphics card */
+	pci_dev = pci_device_find_by_slot(0, 0, 2, 0);
+	if (pci_dev == NULL)
+		errx(1, "Couldn't find graphics card");
+
+	err = pci_device_probe(pci_dev);
+	if (err != 0) {
+		fprintf(stderr, "Couldn't probe graphics card: %s\n",
+			strerror(err));
+		exit(1);
+	}
+
+	if (pci_dev->vendor_id != 0x8086)
+		errx(1, "Graphics card is non-intel");
+	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);
+	}
+}