Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / bios / xpio.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c
new file mode 100644 (file)
index 0000000..63a5e1b
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/xpio.c
@@ -0,0 +1,74 @@
+/*
+ * 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 <subdev/bios.h>
+#include <subdev/bios/gpio.h>
+#include <subdev/bios/xpio.h>
+
+static u16
+dcb_xpiod_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+       u16 data = dcb_gpio_table(bios, ver, hdr, cnt, len);
+       if (data && *ver >= 0x40 && *hdr >= 0x06) {
+               u16 xpio = nv_ro16(bios, data + 0x04);
+               if (xpio) {
+                       *ver = nv_ro08(bios, data + 0x00);
+                       *hdr = nv_ro08(bios, data + 0x01);
+                       *cnt = nv_ro08(bios, data + 0x02);
+                       *len = nv_ro08(bios, data + 0x03);
+                       return xpio;
+               }
+       }
+       return 0x0000;
+}
+
+u16
+dcb_xpio_table(struct nvkm_bios *bios, u8 idx,
+              u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+       u16 data = dcb_xpiod_table(bios, ver, hdr, cnt, len);
+       if (data && idx < *cnt) {
+               u16 xpio = nv_ro16(bios, data + *hdr + (idx * *len));
+               if (xpio) {
+                       *ver = nv_ro08(bios, data + 0x00);
+                       *hdr = nv_ro08(bios, data + 0x01);
+                       *cnt = nv_ro08(bios, data + 0x02);
+                       *len = nv_ro08(bios, data + 0x03);
+                       return xpio;
+               }
+       }
+       return 0x0000;
+}
+
+u16
+dcb_xpio_parse(struct nvkm_bios *bios, u8 idx,
+              u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *info)
+{
+       u16 data = dcb_xpio_table(bios, idx, ver, hdr, cnt, len);
+       if (data && *len >= 6) {
+               info->type = nv_ro08(bios, data + 0x04);
+               info->addr = nv_ro08(bios, data + 0x05);
+               info->flags = nv_ro08(bios, data + 0x06);
+       }
+       return 0x0000;
+}