1 files changed, 137 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c
new file mode 100644
index 000000000000..b142a510e89f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/M0209.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2013 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/M0209.h>
+
+u32
+nvbios_M0209Te(struct nouveau_bios *bios,
+               u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
+{
+        struct bit_entry bit_M;
+        u32 data = 0x00000000;
+
+        if (!bit_entry(bios, 'M', &bit_M)) {
+                if (bit_M.version == 2 && bit_M.length > 0x0c)
+                        data = nv_ro32(bios, bit_M.offset + 0x09);
+                if (data) {
+                        *ver = nv_ro08(bios, data + 0x00);
+                        switch (*ver) {
+                        case 0x10:
+                                *hdr = nv_ro08(bios, data + 0x01);
+                                *len = nv_ro08(bios, data + 0x02);
+                                *ssz = nv_ro08(bios, data + 0x03);
+                                *snr = 1;
+                                *cnt = nv_ro08(bios, data + 0x04);
+                                return data;
+                        default:
+                                break;
+                        }
+                }
+        }
+
+        return 0x00000000;
+}
+
+u32
+nvbios_M0209Ee(struct nouveau_bios *bios, int idx,
+               u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+        u8  snr, ssz;
+        u32 data = nvbios_M0209Te(bios, ver, hdr, cnt, len, &snr, &ssz);
+        if (data && idx < *cnt) {
+                data = data + *hdr + idx * (*len + (snr * ssz));
+                *hdr = *len;
+                *cnt = snr;
+                *len = ssz;
+                return data;
+        }
+        return 0x00000000;
+}
+
+u32
+nvbios_M0209Ep(struct nouveau_bios *bios, int idx,
+               u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+               struct nvbios_M0209E *info)
+{
+        u32 data = nvbios_M0209Ee(bios, idx, ver, hdr, cnt, len);
+        memset(info, 0x00, sizeof(*info));
+        switch (!!data * *ver) {
+        case 0x10:
+                info->v00_40 = (nv_ro08(bios, data + 0x00) & 0x40) >> 6;
+                info->bits   =  nv_ro08(bios, data + 0x00) & 0x3f;
+                info->modulo =  nv_ro08(bios, data + 0x01);
+                info->v02_40 = (nv_ro08(bios, data + 0x02) & 0x40) >> 6;
+                info->v02_07 =  nv_ro08(bios, data + 0x02) & 0x07;
+                info->v03    =  nv_ro08(bios, data + 0x03);
+                return data;
+        default:
+                break;
+        }
+        return 0x00000000;
+}
+
+u32
+nvbios_M0209Se(struct nouveau_bios *bios, int ent, int idx, u8 *ver, u8 *hdr)
+{
+
+        u8  cnt, len;
+        u32 data = nvbios_M0209Ee(bios, ent, ver, hdr, &cnt, &len);
+        if (data && idx < cnt) {
+                data = data + *hdr + idx * len;
+                *hdr = len;
+                return data;
+        }
+        return 0x00000000;
+}
+
+u32
+nvbios_M0209Sp(struct nouveau_bios *bios, int ent, int idx, u8 *ver, u8 *hdr,
+               struct nvbios_M0209S *info)
+{
+        struct nvbios_M0209E M0209E;
+        u8  cnt, len;
+        u32 data = nvbios_M0209Ep(bios, ent, ver, hdr, &cnt, &len, &M0209E);
+        if (data) {
+                u32 i, data = nvbios_M0209Se(bios, ent, idx, ver, hdr);
+                memset(info, 0x00, sizeof(*info));
+                switch (!!data * *ver) {
+                case 0x10:
+                        for (i = 0; i < ARRAY_SIZE(info->data); i++) {
+                                u32 bits = (i % M0209E.modulo) * M0209E.bits;
+                                u32 mask = (1ULL << M0209E.bits) - 1;
+                                u16  off = bits / 8;
+                                u8   mod = bits % 8;
+                                info->data[i] = nv_ro32(bios, data + off);
+                                info->data[i] = info->data[i] >> mod;
+                                info->data[i] = info->data[i] & mask;
+                        }
+                        return data;
+                default:
+                        break;
+                }
+        }
+        return 0x00000000;
+}