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path: root/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c417
1 files changed, 417 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..ebd402e19dbf
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
@@ -0,0 +1,417 @@
+/*
+ * 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/bios.h>
+#include <subdev/bios/bit.h>
+#include <subdev/bios/bmp.h>
+#include <subdev/bios/pll.h>
+#include <subdev/vga.h>
+
+#include <core/device.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
+g84_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 nvkm_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 nvkm_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 g84_pll_mapping;
+ default:
+ return NULL;
+ }
+}
+
+static u16
+pll_map_reg(struct nvkm_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 nvkm_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 nvkm_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;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.