1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
new file mode 100644
index 000000000..d017a1b5e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs
+ */
+#include "priv.h"
+
+void
+nvkm_bar_flush(struct nvkm_bar *bar)
+{
+	if (bar && bar->func->flush)
+		bar->func->flush(bar);
+}
+
+struct nvkm_vmm *
+nvkm_bar_bar1_vmm(struct nvkm_device *device)
+{
+	return device->bar->func->bar1.vmm(device->bar);
+}
+
+void
+nvkm_bar_bar1_reset(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar) {
+		bar->func->bar1.init(bar);
+		bar->func->bar1.wait(bar);
+	}
+}
+
+struct nvkm_vmm *
+nvkm_bar_bar2_vmm(struct nvkm_device *device)
+{
+	/* Denies access to BAR2 when it's not initialised, used by INSTMEM
+	 * to know when object access needs to go through the BAR0 window.
+	 */
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2)
+		return bar->func->bar2.vmm(bar);
+	return NULL;
+}
+
+void
+nvkm_bar_bar2_reset(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2) {
+		bar->func->bar2.init(bar);
+		bar->func->bar2.wait(bar);
+	}
+}
+
+void
+nvkm_bar_bar2_fini(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2) {
+		bar->func->bar2.fini(bar);
+		bar->bar2 = false;
+	}
+}
+
+void
+nvkm_bar_bar2_init(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->subdev.oneinit && !bar->bar2 && bar->func->bar2.init) {
+		bar->func->bar2.init(bar);
+		bar->func->bar2.wait(bar);
+		bar->bar2 = true;
+	}
+}
+
+static int
+nvkm_bar_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	if (bar->func->bar1.fini)
+		bar->func->bar1.fini(bar);
+	return 0;
+}
+
+static int
+nvkm_bar_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	bar->func->bar1.init(bar);
+	bar->func->bar1.wait(bar);
+	if (bar->func->init)
+		bar->func->init(bar);
+	return 0;
+}
+
+static int
+nvkm_bar_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	return bar->func->oneinit(bar);
+}
+
+static void *
+nvkm_bar_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	nvkm_bar_bar2_fini(subdev->device);
+	return bar->func->dtor(bar);
+}
+
+static const struct nvkm_subdev_func
+nvkm_bar = {
+	.dtor = nvkm_bar_dtor,
+	.oneinit = nvkm_bar_oneinit,
+	.init = nvkm_bar_init,
+	.fini = nvkm_bar_fini,
+};
+
+void
+nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_bar *bar)
+{
+	nvkm_subdev_ctor(&nvkm_bar, device, type, inst, &bar->subdev);
+	bar->func = func;
+	spin_lock_init(&bar->lock);
+}