--- /dev/null
+/*
+ * 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 "priv.h"
+
+#include <core/enum.h>
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+
+void
+gf100_ltc_cbc_clear(struct nvkm_ltc_priv *priv, u32 start, u32 limit)
+{
+ nv_wr32(priv, 0x17e8cc, start);
+ nv_wr32(priv, 0x17e8d0, limit);
+ nv_wr32(priv, 0x17e8c8, 0x00000004);
+}
+
+void
+gf100_ltc_cbc_wait(struct nvkm_ltc_priv *priv)
+{
+ int c, s;
+ for (c = 0; c < priv->ltc_nr; c++) {
+ for (s = 0; s < priv->lts_nr; s++)
+ nv_wait(priv, 0x1410c8 + c * 0x2000 + s * 0x400, ~0, 0);
+ }
+}
+
+void
+gf100_ltc_zbc_clear_color(struct nvkm_ltc_priv *priv, int i, const u32 color[4])
+{
+ nv_mask(priv, 0x17ea44, 0x0000000f, i);
+ nv_wr32(priv, 0x17ea48, color[0]);
+ nv_wr32(priv, 0x17ea4c, color[1]);
+ nv_wr32(priv, 0x17ea50, color[2]);
+ nv_wr32(priv, 0x17ea54, color[3]);
+}
+
+void
+gf100_ltc_zbc_clear_depth(struct nvkm_ltc_priv *priv, int i, const u32 depth)
+{
+ nv_mask(priv, 0x17ea44, 0x0000000f, i);
+ nv_wr32(priv, 0x17ea58, depth);
+}
+
+static const struct nvkm_bitfield
+gf100_ltc_lts_intr_name[] = {
+ { 0x00000001, "IDLE_ERROR_IQ" },
+ { 0x00000002, "IDLE_ERROR_CBC" },
+ { 0x00000004, "IDLE_ERROR_TSTG" },
+ { 0x00000008, "IDLE_ERROR_DSTG" },
+ { 0x00000010, "EVICTED_CB" },
+ { 0x00000020, "ILLEGAL_COMPSTAT" },
+ { 0x00000040, "BLOCKLINEAR_CB" },
+ { 0x00000100, "ECC_SEC_ERROR" },
+ { 0x00000200, "ECC_DED_ERROR" },
+ { 0x00000400, "DEBUG" },
+ { 0x00000800, "ATOMIC_TO_Z" },
+ { 0x00001000, "ILLEGAL_ATOMIC" },
+ { 0x00002000, "BLKACTIVITY_ERR" },
+ {}
+};
+
+static void
+gf100_ltc_lts_intr(struct nvkm_ltc_priv *priv, int ltc, int lts)
+{
+ u32 base = 0x141000 + (ltc * 0x2000) + (lts * 0x400);
+ u32 intr = nv_rd32(priv, base + 0x020);
+ u32 stat = intr & 0x0000ffff;
+
+ if (stat) {
+ nv_info(priv, "LTC%d_LTS%d:", ltc, lts);
+ nvkm_bitfield_print(gf100_ltc_lts_intr_name, stat);
+ pr_cont("\n");
+ }
+
+ nv_wr32(priv, base + 0x020, intr);
+}
+
+void
+gf100_ltc_intr(struct nvkm_subdev *subdev)
+{
+ struct nvkm_ltc_priv *priv = (void *)subdev;
+ u32 mask;
+
+ mask = nv_rd32(priv, 0x00017c);
+ while (mask) {
+ u32 lts, ltc = __ffs(mask);
+ for (lts = 0; lts < priv->lts_nr; lts++)
+ gf100_ltc_lts_intr(priv, ltc, lts);
+ mask &= ~(1 << ltc);
+ }
+}
+
+static int
+gf100_ltc_init(struct nvkm_object *object)
+{
+ struct nvkm_ltc_priv *priv = (void *)object;
+ u32 lpg128 = !(nv_rd32(priv, 0x100c80) & 0x00000001);
+ int ret;
+
+ ret = nvkm_ltc_init(priv);
+ if (ret)
+ return ret;
+
+ nv_mask(priv, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */
+ nv_wr32(priv, 0x17e8d8, priv->ltc_nr);
+ nv_wr32(priv, 0x17e8d4, priv->tag_base);
+ nv_mask(priv, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
+ return 0;
+}
+
+void
+gf100_ltc_dtor(struct nvkm_object *object)
+{
+ struct nvkm_fb *pfb = nvkm_fb(object);
+ struct nvkm_ltc_priv *priv = (void *)object;
+
+ nvkm_mm_fini(&priv->tags);
+ if (pfb->ram)
+ nvkm_mm_free(&pfb->vram, &priv->tag_ram);
+
+ nvkm_ltc_destroy(priv);
+}
+
+/* TODO: Figure out tag memory details and drop the over-cautious allocation.
+ */
+int
+gf100_ltc_init_tag_ram(struct nvkm_fb *pfb, struct nvkm_ltc_priv *priv)
+{
+ u32 tag_size, tag_margin, tag_align;
+ int ret;
+
+ /* No VRAM, no tags for now. */
+ if (!pfb->ram) {
+ priv->num_tags = 0;
+ goto mm_init;
+ }
+
+ /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */
+ priv->num_tags = (pfb->ram->size >> 17) / 4;
+ if (priv->num_tags > (1 << 17))
+ priv->num_tags = 1 << 17; /* we have 17 bits in PTE */
+ priv->num_tags = (priv->num_tags + 63) & ~63; /* round up to 64 */
+
+ tag_align = priv->ltc_nr * 0x800;
+ tag_margin = (tag_align < 0x6000) ? 0x6000 : tag_align;
+
+ /* 4 part 4 sub: 0x2000 bytes for 56 tags */
+ /* 3 part 4 sub: 0x6000 bytes for 168 tags */
+ /*
+ * About 147 bytes per tag. Let's be safe and allocate x2, which makes
+ * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags.
+ *
+ * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %.
+ */
+ tag_size = (priv->num_tags / 64) * 0x6000 + tag_margin;
+ tag_size += tag_align;
+ tag_size = (tag_size + 0xfff) >> 12; /* round up */
+
+ ret = nvkm_mm_tail(&pfb->vram, 1, 1, tag_size, tag_size, 1,
+ &priv->tag_ram);
+ if (ret) {
+ priv->num_tags = 0;
+ } else {
+ u64 tag_base = ((u64)priv->tag_ram->offset << 12) + tag_margin;
+
+ tag_base += tag_align - 1;
+ ret = do_div(tag_base, tag_align);
+
+ priv->tag_base = tag_base;
+ }
+
+mm_init:
+ ret = nvkm_mm_init(&priv->tags, 0, priv->num_tags, 1);
+ return ret;
+}
+
+int
+gf100_ltc_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_fb *pfb = nvkm_fb(parent);
+ struct nvkm_ltc_priv *priv;
+ u32 parts, mask;
+ int ret, i;
+
+ ret = nvkm_ltc_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ parts = nv_rd32(priv, 0x022438);
+ mask = nv_rd32(priv, 0x022554);
+ for (i = 0; i < parts; i++) {
+ if (!(mask & (1 << i)))
+ priv->ltc_nr++;
+ }
+ priv->lts_nr = nv_rd32(priv, 0x17e8dc) >> 28;
+
+ ret = gf100_ltc_init_tag_ram(pfb, priv);
+ if (ret)
+ return ret;
+
+ nv_subdev(priv)->intr = gf100_ltc_intr;
+ return 0;
+}
+
+struct nvkm_oclass *
+gf100_ltc_oclass = &(struct nvkm_ltc_impl) {
+ .base.handle = NV_SUBDEV(LTC, 0xc0),
+ .base.ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = gf100_ltc_ctor,
+ .dtor = gf100_ltc_dtor,
+ .init = gf100_ltc_init,
+ .fini = _nvkm_ltc_fini,
+ },
+ .intr = gf100_ltc_intr,
+ .cbc_clear = gf100_ltc_cbc_clear,
+ .cbc_wait = gf100_ltc_cbc_wait,
+ .zbc = 16,
+ .zbc_clear_color = gf100_ltc_zbc_clear_color,
+ .zbc_clear_depth = gf100_ltc_zbc_clear_depth,
+}.base;
Code Review / kvmfornfv.git / blobdiff