drm/nouveau/pci: new subdev

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
new file mode 100644
index 000000000000..6a742659a901
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2015 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 <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+u32
+nvkm_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	return pci->func->rd32(pci, addr);
+}
+
+void
+nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	pci->func->wr08(pci, addr, data);
+}
+
+void
+nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	pci->func->wr32(pci, addr, data);
+}
+
+void
+nvkm_pci_rom_shadow(struct nvkm_pci *pci, bool shadow)
+{
+	u32 data = nvkm_pci_rd32(pci, 0x0050);
+	if (shadow)
+		data |=  0x00000001;
+	else
+		data &= ~0x00000001;
+	nvkm_pci_wr32(pci, 0x0050, data);
+}
+
+void
+nvkm_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	pci->func->msi_rearm(pci);
+}
+
+static void *
+nvkm_pci_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_pci(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_pci_func = {
+	.dtor = nvkm_pci_dtor,
+};
+
+int
+nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_pci **ppci)
+{
+	struct nvkm_pci *pci;
+	if (!(pci = *ppci = kzalloc(sizeof(**ppci), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_pci_func, device, index, 0, &pci->subdev);
+	pci->func = func;
+	return 0;
+}