drm: remove symlinks from build, use Kbuild files for lib build

The DRM build used a separate, symlinked, source tree out of a desire
to avoid Kbuild/autotools' object files conflicting.

Not only is this very annoying to maintain, but it's made worse by
having two entirely separate source file lists to maintain too.

Fixes both these issues by ditching automake (it doesn't approve of
the kernel's Kbuild syntax) in favour of custom makefiles that can
build libnvif.so from the Kbuild files.

Like the previous commit, this will never show up in the kernel tree
(it has its own version).

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

1 files changed, 140 insertions, 0 deletions

diff --git a/drm/nouveau/nvkm/subdev/devinit/nv05.c b/drm/nouveau/nvkm/subdev/devinit/nv05.c
new file mode 100644
index 000000000..a2007a3ef
--- /dev/null
+++ b/drm/nouveau/nvkm/subdev/devinit/nv05.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2010 Francisco Jerez.
+ * All Rights Reserved.
+ *
+ * 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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.
+ *
+ */
+
+#include <subdev/bios.h>
+#include <subdev/bios/bmp.h>
+#include <subdev/vga.h>
+
+#include "fbmem.h"
+#include "nv04.h"
+
+static void
+nv05_devinit_meminit(struct nouveau_devinit *devinit)
+{
+	static const u8 default_config_tab[][2] = {
+		{ 0x24, 0x00 },
+		{ 0x28, 0x00 },
+		{ 0x24, 0x01 },
+		{ 0x1f, 0x00 },
+		{ 0x0f, 0x00 },
+		{ 0x17, 0x00 },
+		{ 0x06, 0x00 },
+		{ 0x00, 0x00 }
+	};
+	struct nv04_devinit_priv *priv = (void *)devinit;
+	struct nouveau_bios *bios = nouveau_bios(priv);
+	struct io_mapping *fb;
+	u32 patt = 0xdeadbeef;
+	u16 data;
+	u8 strap, ramcfg[2];
+	int i, v;
+
+	/* Map the framebuffer aperture */
+	fb = fbmem_init(nv_device(priv));
+	if (!fb) {
+		nv_error(priv, "failed to map fb\n");
+		return;
+	}
+
+	strap = (nv_rd32(priv, 0x101000) & 0x0000003c) >> 2;
+	if ((data = bmp_mem_init_table(bios))) {
+		ramcfg[0] = nv_ro08(bios, data + 2 * strap + 0);
+		ramcfg[1] = nv_ro08(bios, data + 2 * strap + 1);
+	} else {
+		ramcfg[0] = default_config_tab[strap][0];
+		ramcfg[1] = default_config_tab[strap][1];
+	}
+
+	/* Sequencer off */
+	nv_wrvgas(priv, 0, 1, nv_rdvgas(priv, 0, 1) | 0x20);
+
+	if (nv_rd32(priv, NV04_PFB_BOOT_0) & NV04_PFB_BOOT_0_UMA_ENABLE)
+		goto out;
+
+	nv_mask(priv, NV04_PFB_DEBUG_0, NV04_PFB_DEBUG_0_REFRESH_OFF, 0);
+
+	/* If present load the hardcoded scrambling table */
+	if (data) {
+		for (i = 0, data += 0x10; i < 8; i++, data += 4) {
+			u32 scramble = nv_ro32(bios, data);
+			nv_wr32(priv, NV04_PFB_SCRAMBLE(i), scramble);
+		}
+	}
+
+	/* Set memory type/width/length defaults depending on the straps */
+	nv_mask(priv, NV04_PFB_BOOT_0, 0x3f, ramcfg[0]);
+
+	if (ramcfg[1] & 0x80)
+		nv_mask(priv, NV04_PFB_CFG0, 0, NV04_PFB_CFG0_SCRAMBLE);
+
+	nv_mask(priv, NV04_PFB_CFG1, 0x700001, (ramcfg[1] & 1) << 20);
+	nv_mask(priv, NV04_PFB_CFG1, 0, 1);
+
+	/* Probe memory bus width */
+	for (i = 0; i < 4; i++)
+		fbmem_poke(fb, 4 * i, patt);
+
+	if (fbmem_peek(fb, 0xc) != patt)
+		nv_mask(priv, NV04_PFB_BOOT_0,
+			  NV04_PFB_BOOT_0_RAM_WIDTH_128, 0);
+
+	/* Probe memory length */
+	v = nv_rd32(priv, NV04_PFB_BOOT_0) & NV04_PFB_BOOT_0_RAM_AMOUNT;
+
+	if (v == NV04_PFB_BOOT_0_RAM_AMOUNT_32MB &&
+	    (!fbmem_readback(fb, 0x1000000, ++patt) ||
+	     !fbmem_readback(fb, 0, ++patt)))
+		nv_mask(priv, NV04_PFB_BOOT_0, NV04_PFB_BOOT_0_RAM_AMOUNT,
+			  NV04_PFB_BOOT_0_RAM_AMOUNT_16MB);
+
+	if (v == NV04_PFB_BOOT_0_RAM_AMOUNT_16MB &&
+	    !fbmem_readback(fb, 0x800000, ++patt))
+		nv_mask(priv, NV04_PFB_BOOT_0, NV04_PFB_BOOT_0_RAM_AMOUNT,
+			  NV04_PFB_BOOT_0_RAM_AMOUNT_8MB);
+
+	if (!fbmem_readback(fb, 0x400000, ++patt))
+		nv_mask(priv, NV04_PFB_BOOT_0, NV04_PFB_BOOT_0_RAM_AMOUNT,
+			  NV04_PFB_BOOT_0_RAM_AMOUNT_4MB);
+
+out:
+	/* Sequencer on */
+	nv_wrvgas(priv, 0, 1, nv_rdvgas(priv, 0, 1) & ~0x20);
+	fbmem_fini(fb);
+}
+
+struct nouveau_oclass *
+nv05_devinit_oclass = &(struct nouveau_devinit_impl) {
+	.base.handle = NV_SUBDEV(DEVINIT, 0x05),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv04_devinit_ctor,
+		.dtor = nv04_devinit_dtor,
+		.init = nv04_devinit_init,
+		.fini = nv04_devinit_fini,
+	},
+	.meminit = nv05_devinit_meminit,
+	.pll_set = nv04_devinit_pll_set,
+	.post = nvbios_init,
+}.base;