drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

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

1 files changed, 416 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
new file mode 100644
index 000000000000..1f76de597d4b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
@@ -0,0 +1,416 @@
+/*
+ * Copyright 2005-2006 Erik Waling
+ * Copyright 2006 Stephane Marchesin
+ * Copyright 2007-2009 Stuart Bennett
+ *
+ * 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 AUTHORS 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/vga.h>
+#include <subdev/bios.h>
+#include <subdev/bios/bit.h>
+#include <subdev/bios/bmp.h>
+#include <subdev/bios/pll.h>
+
+struct pll_mapping {
+	u8  type;
+	u32 reg;
+};
+
+static struct pll_mapping
+nv04_pll_mapping[] = {
+	{ PLL_CORE  , 0x680500 },
+	{ PLL_MEMORY, 0x680504 },
+	{ PLL_VPLL0 , 0x680508 },
+	{ PLL_VPLL1 , 0x680520 },
+	{}
+};
+
+static struct pll_mapping
+nv40_pll_mapping[] = {
+	{ PLL_CORE  , 0x004000 },
+	{ PLL_MEMORY, 0x004020 },
+	{ PLL_VPLL0 , 0x680508 },
+	{ PLL_VPLL1 , 0x680520 },
+	{}
+};
+
+static struct pll_mapping
+nv50_pll_mapping[] = {
+	{ PLL_CORE  , 0x004028 },
+	{ PLL_SHADER, 0x004020 },
+	{ PLL_UNK03 , 0x004000 },
+	{ PLL_MEMORY, 0x004008 },
+	{ PLL_UNK40 , 0x00e810 },
+	{ PLL_UNK41 , 0x00e818 },
+	{ PLL_UNK42 , 0x00e824 },
+	{ PLL_VPLL0 , 0x614100 },
+	{ PLL_VPLL1 , 0x614900 },
+	{}
+};
+
+static struct pll_mapping
+nv84_pll_mapping[] = {
+	{ PLL_CORE  , 0x004028 },
+	{ PLL_SHADER, 0x004020 },
+	{ PLL_MEMORY, 0x004008 },
+	{ PLL_VDEC  , 0x004030 },
+	{ PLL_UNK41 , 0x00e818 },
+	{ PLL_VPLL0 , 0x614100 },
+	{ PLL_VPLL1 , 0x614900 },
+	{}
+};
+
+static u16
+pll_limits_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+	struct bit_entry bit_C;
+
+	if (!bit_entry(bios, 'C', &bit_C) && bit_C.length >= 10) {
+		u16 data = nv_ro16(bios, bit_C.offset + 8);
+		if (data) {
+			*ver = nv_ro08(bios, data + 0);
+			*hdr = nv_ro08(bios, data + 1);
+			*len = nv_ro08(bios, data + 2);
+			*cnt = nv_ro08(bios, data + 3);
+			return data;
+		}
+	}
+
+	if (bmp_version(bios) >= 0x0524) {
+		u16 data = nv_ro16(bios, bios->bmp_offset + 142);
+		if (data) {
+			*ver = nv_ro08(bios, data + 0);
+			*hdr = 1;
+			*cnt = 1;
+			*len = 0x18;
+			return data;
+		}
+	}
+
+	*ver = 0x00;
+	return 0x0000;
+}
+
+static struct pll_mapping *
+pll_map(struct nouveau_bios *bios)
+{
+	switch (nv_device(bios)->card_type) {
+	case NV_04:
+	case NV_10:
+	case NV_11:
+	case NV_20:
+	case NV_30:
+		return nv04_pll_mapping;
+		break;
+	case NV_40:
+		return nv40_pll_mapping;
+	case NV_50:
+		if (nv_device(bios)->chipset == 0x50)
+			return nv50_pll_mapping;
+		else
+		if (nv_device(bios)->chipset <  0xa3 ||
+		    nv_device(bios)->chipset == 0xaa ||
+		    nv_device(bios)->chipset == 0xac)
+			return nv84_pll_mapping;
+	default:
+		return NULL;
+	}
+}
+
+static u16
+pll_map_reg(struct nouveau_bios *bios, u32 reg, u32 *type, u8 *ver, u8 *len)
+{
+	struct pll_mapping *map;
+	u8  hdr, cnt;
+	u16 data;
+
+	data = pll_limits_table(bios, ver, &hdr, &cnt, len);
+	if (data && *ver >= 0x30) {
+		data += hdr;
+		while (cnt--) {
+			if (nv_ro32(bios, data + 3) == reg) {
+				*type = nv_ro08(bios, data + 0);
+				return data;
+			}
+			data += *len;
+		}
+		return 0x0000;
+	}
+
+	map = pll_map(bios);
+	while (map->reg) {
+		if (map->reg == reg && *ver >= 0x20) {
+			u16 addr = (data += hdr);
+			*type = map->type;
+			while (cnt--) {
+				if (nv_ro32(bios, data) == map->reg)
+					return data;
+				data += *len;
+			}
+			return addr;
+		} else
+		if (map->reg == reg) {
+			*type = map->type;
+			return data + 1;
+		}
+		map++;
+	}
+
+	return 0x0000;
+}
+
+static u16
+pll_map_type(struct nouveau_bios *bios, u8 type, u32 *reg, u8 *ver, u8 *len)
+{
+	struct pll_mapping *map;
+	u8  hdr, cnt;
+	u16 data;
+
+	data = pll_limits_table(bios, ver, &hdr, &cnt, len);
+	if (data && *ver >= 0x30) {
+		data += hdr;
+		while (cnt--) {
+			if (nv_ro08(bios, data + 0) == type) {
+				*reg = nv_ro32(bios, data + 3);
+				return data;
+			}
+			data += *len;
+		}
+		return 0x0000;
+	}
+
+	map = pll_map(bios);
+	while (map->reg) {
+		if (map->type == type && *ver >= 0x20) {
+			u16 addr = (data += hdr);
+			*reg = map->reg;
+			while (cnt--) {
+				if (nv_ro32(bios, data) == map->reg)
+					return data;
+				data += *len;
+			}
+			return addr;
+		} else
+		if (map->type == type) {
+			*reg = map->reg;
+			return data + 1;
+		}
+		map++;
+	}
+
+	return 0x0000;
+}
+
+int
+nvbios_pll_parse(struct nouveau_bios *bios, u32 type, struct nvbios_pll *info)
+{
+	u8  ver, len;
+	u32 reg = type;
+	u16 data;
+
+	if (type > PLL_MAX) {
+		reg  = type;
+		data = pll_map_reg(bios, reg, &type, &ver, &len);
+	} else {
+		data = pll_map_type(bios, type, &reg, &ver, &len);
+	}
+
+	if (ver && !data)
+		return -ENOENT;
+
+	memset(info, 0, sizeof(*info));
+	info->type = type;
+	info->reg = reg;
+
+	switch (ver) {
+	case 0x00:
+		break;
+	case 0x10:
+	case 0x11:
+		info->vco1.min_freq = nv_ro32(bios, data + 0);
+		info->vco1.max_freq = nv_ro32(bios, data + 4);
+		info->vco2.min_freq = nv_ro32(bios, data + 8);
+		info->vco2.max_freq = nv_ro32(bios, data + 12);
+		info->vco1.min_inputfreq = nv_ro32(bios, data + 16);
+		info->vco2.min_inputfreq = nv_ro32(bios, data + 20);
+		info->vco1.max_inputfreq = INT_MAX;
+		info->vco2.max_inputfreq = INT_MAX;
+
+		info->max_p = 0x7;
+		info->max_p_usable = 0x6;
+
+		/* these values taken from nv30/31/36 */
+		switch (bios->version.chip) {
+		case 0x36:
+			info->vco1.min_n = 0x5;
+			break;
+		default:
+			info->vco1.min_n = 0x1;
+			break;
+		}
+		info->vco1.max_n = 0xff;
+		info->vco1.min_m = 0x1;
+		info->vco1.max_m = 0xd;
+
+		/*
+		 * On nv30, 31, 36 (i.e. all cards with two stage PLLs with this
+		 * table version (apart from nv35)), N2 is compared to
+		 * maxN2 (0x46) and 10 * maxM2 (0x4), so set maxN2 to 0x28 and
+		 * save a comparison
+		 */
+		info->vco2.min_n = 0x4;
+		switch (bios->version.chip) {
+		case 0x30:
+		case 0x35:
+			info->vco2.max_n = 0x1f;
+			break;
+		default:
+			info->vco2.max_n = 0x28;
+			break;
+		}
+		info->vco2.min_m = 0x1;
+		info->vco2.max_m = 0x4;
+		break;
+	case 0x20:
+	case 0x21:
+		info->vco1.min_freq = nv_ro16(bios, data + 4) * 1000;
+		info->vco1.max_freq = nv_ro16(bios, data + 6) * 1000;
+		info->vco2.min_freq = nv_ro16(bios, data + 8) * 1000;
+		info->vco2.max_freq = nv_ro16(bios, data + 10) * 1000;
+		info->vco1.min_inputfreq = nv_ro16(bios, data + 12) * 1000;
+		info->vco2.min_inputfreq = nv_ro16(bios, data + 14) * 1000;
+		info->vco1.max_inputfreq = nv_ro16(bios, data + 16) * 1000;
+		info->vco2.max_inputfreq = nv_ro16(bios, data + 18) * 1000;
+		info->vco1.min_n = nv_ro08(bios, data + 20);
+		info->vco1.max_n = nv_ro08(bios, data + 21);
+		info->vco1.min_m = nv_ro08(bios, data + 22);
+		info->vco1.max_m = nv_ro08(bios, data + 23);
+		info->vco2.min_n = nv_ro08(bios, data + 24);
+		info->vco2.max_n = nv_ro08(bios, data + 25);
+		info->vco2.min_m = nv_ro08(bios, data + 26);
+		info->vco2.max_m = nv_ro08(bios, data + 27);
+
+		info->max_p = nv_ro08(bios, data + 29);
+		info->max_p_usable = info->max_p;
+		if (bios->version.chip < 0x60)
+			info->max_p_usable = 0x6;
+		info->bias_p = nv_ro08(bios, data + 30);
+
+		if (len > 0x22)
+			info->refclk = nv_ro32(bios, data + 31);
+		break;
+	case 0x30:
+		data = nv_ro16(bios, data + 1);
+
+		info->vco1.min_freq = nv_ro16(bios, data + 0) * 1000;
+		info->vco1.max_freq = nv_ro16(bios, data + 2) * 1000;
+		info->vco2.min_freq = nv_ro16(bios, data + 4) * 1000;
+		info->vco2.max_freq = nv_ro16(bios, data + 6) * 1000;
+		info->vco1.min_inputfreq = nv_ro16(bios, data + 8) * 1000;
+		info->vco2.min_inputfreq = nv_ro16(bios, data + 10) * 1000;
+		info->vco1.max_inputfreq = nv_ro16(bios, data + 12) * 1000;
+		info->vco2.max_inputfreq = nv_ro16(bios, data + 14) * 1000;
+		info->vco1.min_n = nv_ro08(bios, data + 16);
+		info->vco1.max_n = nv_ro08(bios, data + 17);
+		info->vco1.min_m = nv_ro08(bios, data + 18);
+		info->vco1.max_m = nv_ro08(bios, data + 19);
+		info->vco2.min_n = nv_ro08(bios, data + 20);
+		info->vco2.max_n = nv_ro08(bios, data + 21);
+		info->vco2.min_m = nv_ro08(bios, data + 22);
+		info->vco2.max_m = nv_ro08(bios, data + 23);
+		info->max_p_usable = info->max_p = nv_ro08(bios, data + 25);
+		info->bias_p = nv_ro08(bios, data + 27);
+		info->refclk = nv_ro32(bios, data + 28);
+		break;
+	case 0x40:
+		info->refclk = nv_ro16(bios, data + 9) * 1000;
+		data = nv_ro16(bios, data + 1);
+
+		info->vco1.min_freq = nv_ro16(bios, data + 0) * 1000;
+		info->vco1.max_freq = nv_ro16(bios, data + 2) * 1000;
+		info->vco1.min_inputfreq = nv_ro16(bios, data + 4) * 1000;
+		info->vco1.max_inputfreq = nv_ro16(bios, data + 6) * 1000;
+		info->vco1.min_m = nv_ro08(bios, data + 8);
+		info->vco1.max_m = nv_ro08(bios, data + 9);
+		info->vco1.min_n = nv_ro08(bios, data + 10);
+		info->vco1.max_n = nv_ro08(bios, data + 11);
+		info->min_p = nv_ro08(bios, data + 12);
+		info->max_p = nv_ro08(bios, data + 13);
+		break;
+	default:
+		nv_error(bios, "unknown pll limits version 0x%02x\n", ver);
+		return -EINVAL;
+	}
+
+	if (!info->refclk) {
+		info->refclk = nv_device(bios)->crystal;
+		if (bios->version.chip == 0x51) {
+			u32 sel_clk = nv_rd32(bios, 0x680524);
+			if ((info->reg == 0x680508 && sel_clk & 0x20) ||
+			    (info->reg == 0x680520 && sel_clk & 0x80)) {
+				if (nv_rdvgac(bios, 0, 0x27) < 0xa3)
+					info->refclk = 200000;
+				else
+					info->refclk = 25000;
+			}
+		}
+	}
+
+	/*
+	 * By now any valid limit table ought to have set a max frequency for
+	 * vco1, so if it's zero it's either a pre limit table bios, or one
+	 * with an empty limit table (seen on nv18)
+	 */
+	if (!info->vco1.max_freq) {
+		info->vco1.max_freq = nv_ro32(bios, bios->bmp_offset + 67);
+		info->vco1.min_freq = nv_ro32(bios, bios->bmp_offset + 71);
+		if (bmp_version(bios) < 0x0506) {
+			info->vco1.max_freq = 256000;
+			info->vco1.min_freq = 128000;
+		}
+
+		info->vco1.min_inputfreq = 0;
+		info->vco1.max_inputfreq = INT_MAX;
+		info->vco1.min_n = 0x1;
+		info->vco1.max_n = 0xff;
+		info->vco1.min_m = 0x1;
+
+		if (nv_device(bios)->crystal == 13500) {
+			/* nv05 does this, nv11 doesn't, nv10 unknown */
+			if (bios->version.chip < 0x11)
+				info->vco1.min_m = 0x7;
+			info->vco1.max_m = 0xd;
+		} else {
+			if (bios->version.chip < 0x11)
+				info->vco1.min_m = 0x8;
+			info->vco1.max_m = 0xe;
+		}
+
+		if (bios->version.chip <  0x17 ||
+		    bios->version.chip == 0x1a ||
+		    bios->version.chip == 0x20)
+			info->max_p = 4;
+		else
+			info->max_p = 5;
+		info->max_p_usable = info->max_p;
+	}
+
+	return 0;
+}