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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
new file mode 100644
index 000000000..c694501ae
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
@@ -0,0 +1,232 @@
+/*
+ * 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/bit.h>
+#include <subdev/bios/dp.h>
+
+u16
+nvbios_dp_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ struct bit_entry d;
+
+ if (!bit_entry(bios, 'd', &d)) {
+ if (d.version == 1 && d.length >= 2) {
+ u16 data = nvbios_rd16(bios, d.offset);
+ if (data) {
+ *ver = nvbios_rd08(bios, data + 0x00);
+ switch (*ver) {
+ case 0x20:
+ case 0x21:
+ case 0x30:
+ case 0x40:
+ case 0x41:
+ case 0x42:
+ *hdr = nvbios_rd08(bios, data + 0x01);
+ *len = nvbios_rd08(bios, data + 0x02);
+ *cnt = nvbios_rd08(bios, data + 0x03);
+ return data;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return 0x0000;
+}
+
+static u16
+nvbios_dpout_entry(struct nvkm_bios *bios, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ u16 data = nvbios_dp_table(bios, ver, hdr, cnt, len);
+ if (data && idx < *cnt) {
+ u16 outp = nvbios_rd16(bios, data + *hdr + idx * *len);
+ switch (*ver * !!outp) {
+ case 0x20:
+ case 0x21:
+ case 0x30:
+ *hdr = nvbios_rd08(bios, data + 0x04);
+ *len = nvbios_rd08(bios, data + 0x05);
+ *cnt = nvbios_rd08(bios, outp + 0x04);
+ break;
+ case 0x40:
+ case 0x41:
+ case 0x42:
+ *hdr = nvbios_rd08(bios, data + 0x04);
+ *cnt = 0;
+ *len = 0;
+ break;
+ default:
+ break;
+ }
+ return outp;
+ }
+ *ver = 0x00;
+ return 0x0000;
+}
+
+u16
+nvbios_dpout_parse(struct nvkm_bios *bios, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_dpout *info)
+{
+ u16 data = nvbios_dpout_entry(bios, idx, ver, hdr, cnt, len);
+ memset(info, 0x00, sizeof(*info));
+ if (data && *ver) {
+ info->type = nvbios_rd16(bios, data + 0x00);
+ info->mask = nvbios_rd16(bios, data + 0x02);
+ switch (*ver) {
+ case 0x20:
+ info->mask |= 0x00c0; /* match any link */
+ fallthrough;
+ case 0x21:
+ case 0x30:
+ info->flags = nvbios_rd08(bios, data + 0x05);
+ info->script[0] = nvbios_rd16(bios, data + 0x06);
+ info->script[1] = nvbios_rd16(bios, data + 0x08);
+ if (*len >= 0x0c)
+ info->lnkcmp = nvbios_rd16(bios, data + 0x0a);
+ if (*len >= 0x0f) {
+ info->script[2] = nvbios_rd16(bios, data + 0x0c);
+ info->script[3] = nvbios_rd16(bios, data + 0x0e);
+ }
+ if (*len >= 0x11)
+ info->script[4] = nvbios_rd16(bios, data + 0x10);
+ break;
+ case 0x40:
+ case 0x41:
+ case 0x42:
+ info->flags = nvbios_rd08(bios, data + 0x04);
+ info->script[0] = nvbios_rd16(bios, data + 0x05);
+ info->script[1] = nvbios_rd16(bios, data + 0x07);
+ info->lnkcmp = nvbios_rd16(bios, data + 0x09);
+ info->script[2] = nvbios_rd16(bios, data + 0x0b);
+ info->script[3] = nvbios_rd16(bios, data + 0x0d);
+ info->script[4] = nvbios_rd16(bios, data + 0x0f);
+ break;
+ default:
+ data = 0x0000;
+ break;
+ }
+ }
+ return data;
+}
+
+u16
+nvbios_dpout_match(struct nvkm_bios *bios, u16 type, u16 mask,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_dpout *info)
+{
+ u16 data, idx = 0;
+ while ((data = nvbios_dpout_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) {
+ if (data && info->type == type) {
+ if ((info->mask & mask) == mask)
+ break;
+ }
+ }
+ return data;
+}
+
+static u16
+nvbios_dpcfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ if (*ver >= 0x40) {
+ outp = nvbios_dp_table(bios, ver, hdr, cnt, len);
+ *hdr = *hdr + (*len * * cnt);
+ *len = nvbios_rd08(bios, outp + 0x06);
+ *cnt = nvbios_rd08(bios, outp + 0x07) *
+ nvbios_rd08(bios, outp + 0x05);
+ }
+
+ if (idx < *cnt)
+ return outp + *hdr + (idx * *len);
+
+ return 0x0000;
+}
+
+u16
+nvbios_dpcfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_dpcfg *info)
+{
+ u16 data = nvbios_dpcfg_entry(bios, outp, idx, ver, hdr, cnt, len);
+ memset(info, 0x00, sizeof(*info));
+ if (data) {
+ switch (*ver) {
+ case 0x20:
+ case 0x21:
+ info->dc = nvbios_rd08(bios, data + 0x02);
+ info->pe = nvbios_rd08(bios, data + 0x03);
+ info->tx_pu = nvbios_rd08(bios, data + 0x04);
+ break;
+ case 0x30:
+ case 0x40:
+ case 0x41:
+ info->pc = nvbios_rd08(bios, data + 0x00);
+ info->dc = nvbios_rd08(bios, data + 0x01);
+ info->pe = nvbios_rd08(bios, data + 0x02);
+ info->tx_pu = nvbios_rd08(bios, data + 0x03);
+ break;
+ case 0x42:
+ info->dc = nvbios_rd08(bios, data + 0x00);
+ info->pe = nvbios_rd08(bios, data + 0x01);
+ info->tx_pu = nvbios_rd08(bios, data + 0x02);
+ break;
+ default:
+ data = 0x0000;
+ break;
+ }
+ }
+ return data;
+}
+
+u16
+nvbios_dpcfg_match(struct nvkm_bios *bios, u16 outp, u8 pc, u8 vs, u8 pe,
+ u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_dpcfg *info)
+{
+ u8 idx = 0xff;
+ u16 data;
+
+ if (*ver >= 0x30) {
+ static const u8 vsoff[] = { 0, 4, 7, 9 };
+ idx = (pc * 10) + vsoff[vs] + pe;
+ if (*ver >= 0x40 && *ver <= 0x41 && *hdr >= 0x12)
+ idx += nvbios_rd08(bios, outp + 0x11) * 40;
+ else
+ if (*ver >= 0x42)
+ idx += nvbios_rd08(bios, outp + 0x11) * 10;
+ } else {
+ while ((data = nvbios_dpcfg_entry(bios, outp, ++idx,
+ ver, hdr, cnt, len))) {
+ if (nvbios_rd08(bios, data + 0x00) == vs &&
+ nvbios_rd08(bios, data + 0x01) == pe)
+ break;
+ }
+ }
+
+ return nvbios_dpcfg_parse(bios, outp, idx, ver, hdr, cnt, len, info);
+}