Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 235 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
new file mode 100644
index 000000000..8698f260b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
@@ -0,0 +1,235 @@
+/*
+ * 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/dcb.h>
+
+u16
+dcb_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+	struct nvkm_subdev *subdev = &bios->subdev;
+	struct nvkm_device *device = subdev->device;
+	u16 dcb = 0x0000;
+
+	if (device->card_type > NV_04)
+		dcb = nvbios_rd16(bios, 0x36);
+	if (!dcb) {
+		nvkm_warn(subdev, "DCB table not found\n");
+		return dcb;
+	}
+
+	*ver = nvbios_rd08(bios, dcb);
+
+	if (*ver >= 0x42) {
+		nvkm_warn(subdev, "DCB version 0x%02x unknown\n", *ver);
+		return 0x0000;
+	} else
+	if (*ver >= 0x30) {
+		if (nvbios_rd32(bios, dcb + 6) == 0x4edcbdcb) {
+			*hdr = nvbios_rd08(bios, dcb + 1);
+			*cnt = nvbios_rd08(bios, dcb + 2);
+			*len = nvbios_rd08(bios, dcb + 3);
+			return dcb;
+		}
+	} else
+	if (*ver >= 0x20) {
+		if (nvbios_rd32(bios, dcb + 4) == 0x4edcbdcb) {
+			u16 i2c = nvbios_rd16(bios, dcb + 2);
+			*hdr = 8;
+			*cnt = (i2c - dcb) / 8;
+			*len = 8;
+			return dcb;
+		}
+	} else
+	if (*ver >= 0x15) {
+		if (!nvbios_memcmp(bios, dcb - 7, "DEV_REC", 7)) {
+			u16 i2c = nvbios_rd16(bios, dcb + 2);
+			*hdr = 4;
+			*cnt = (i2c - dcb) / 10;
+			*len = 10;
+			return dcb;
+		}
+	} else {
+		/*
+		 * v1.4 (some NV15/16, NV11+) seems the same as v1.5, but
+		 * always has the same single (crt) entry, even when tv-out
+		 * present, so the conclusion is this version cannot really
+		 * be used.
+		 *
+		 * v1.2 tables (some NV6/10, and NV15+) normally have the
+		 * same 5 entries, which are not specific to the card and so
+		 * no use.
+		 *
+		 * v1.2 does have an I2C table that read_dcb_i2c_table can
+		 * handle, but cards exist (nv11 in #14821) with a bad i2c
+		 * table pointer, so use the indices parsed in
+		 * parse_bmp_structure.
+		 *
+		 * v1.1 (NV5+, maybe some NV4) is entirely unhelpful
+		 */
+		nvkm_debug(subdev, "DCB contains no useful data\n");
+		return 0x0000;
+	}
+
+	nvkm_warn(subdev, "DCB header validation failed\n");
+	return 0x0000;
+}
+
+u16
+dcb_outp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len)
+{
+	u8  hdr, cnt;
+	u16 dcb = dcb_table(bios, ver, &hdr, &cnt, len);
+	if (dcb && idx < cnt)
+		return dcb + hdr + (idx * *len);
+	return 0x0000;
+}
+
+static inline u16
+dcb_outp_hasht(struct dcb_output *outp)
+{
+	return (outp->extdev << 8) | (outp->location << 4) | outp->type;
+}
+
+static inline u16
+dcb_outp_hashm(struct dcb_output *outp)
+{
+	return (outp->heads << 8) | (outp->link << 6) | outp->or;
+}
+
+u16
+dcb_outp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
+	       struct dcb_output *outp)
+{
+	u16 dcb = dcb_outp(bios, idx, ver, len);
+	memset(outp, 0x00, sizeof(*outp));
+	if (dcb) {
+		if (*ver >= 0x20) {
+			u32 conn = nvbios_rd32(bios, dcb + 0x00);
+			outp->or        = (conn & 0x0f000000) >> 24;
+			outp->location  = (conn & 0x00300000) >> 20;
+			outp->bus       = (conn & 0x000f0000) >> 16;
+			outp->connector = (conn & 0x0000f000) >> 12;
+			outp->heads     = (conn & 0x00000f00) >> 8;
+			outp->i2c_index = (conn & 0x000000f0) >> 4;
+			outp->type      = (conn & 0x0000000f);
+			outp->link      = 0;
+		} else {
+			dcb = 0x0000;
+		}
+
+		if (*ver >= 0x40) {
+			u32 conf = nvbios_rd32(bios, dcb + 0x04);
+			switch (outp->type) {
+			case DCB_OUTPUT_DP:
+				switch (conf & 0x00e00000) {
+				case 0x00000000: /* 1.62 */
+					outp->dpconf.link_bw = 0x06;
+					break;
+				case 0x00200000: /* 2.7 */
+					outp->dpconf.link_bw = 0x0a;
+					break;
+				case 0x00400000: /* 5.4 */
+					outp->dpconf.link_bw = 0x14;
+					break;
+				case 0x00600000: /* 8.1 */
+				default:
+					outp->dpconf.link_bw = 0x1e;
+					break;
+				}
+
+				switch ((conf & 0x0f000000) >> 24) {
+				case 0xf:
+				case 0x4:
+					outp->dpconf.link_nr = 4;
+					break;
+				case 0x3:
+				case 0x2:
+					outp->dpconf.link_nr = 2;
+					break;
+				case 0x1:
+				default:
+					outp->dpconf.link_nr = 1;
+					break;
+				}
+				fallthrough;
+
+			case DCB_OUTPUT_TMDS:
+			case DCB_OUTPUT_LVDS:
+				outp->link = (conf & 0x00000030) >> 4;
+				outp->sorconf.link = outp->link; /*XXX*/
+				outp->extdev = 0x00;
+				if (outp->location != 0)
+					outp->extdev = (conf & 0x0000ff00) >> 8;
+				break;
+			default:
+				break;
+			}
+		}
+
+		outp->hasht = dcb_outp_hasht(outp);
+		outp->hashm = dcb_outp_hashm(outp);
+	}
+	return dcb;
+}
+
+u16
+dcb_outp_match(struct nvkm_bios *bios, u16 type, u16 mask,
+	       u8 *ver, u8 *len, struct dcb_output *outp)
+{
+	u16 dcb, idx = 0;
+	while ((dcb = dcb_outp_parse(bios, idx++, ver, len, outp))) {
+		if ((dcb_outp_hasht(outp) & 0x00ff) == (type & 0x00ff)) {
+			if ((dcb_outp_hashm(outp) & mask) == mask)
+				break;
+		}
+	}
+	return dcb;
+}
+
+int
+dcb_outp_foreach(struct nvkm_bios *bios, void *data,
+		 int (*exec)(struct nvkm_bios *, void *, int, u16))
+{
+	int ret, idx = -1;
+	u8  ver, len;
+	u16 outp;
+
+	while ((outp = dcb_outp(bios, ++idx, &ver, &len))) {
+		if (nvbios_rd32(bios, outp) == 0x00000000)
+			break; /* seen on an NV11 with DCB v1.5 */
+		if (nvbios_rd32(bios, outp) == 0xffffffff)
+			break; /* seen on an NV17 with DCB v2.0 */
+
+		if (nvbios_rd08(bios, outp) == DCB_OUTPUT_UNUSED)
+			continue;
+		if (nvbios_rd08(bios, outp) == DCB_OUTPUT_EOL)
+			break;
+
+		ret = exec(bios, data, idx, outp);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}