1 files changed, 419 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_graph.c b/drivers/gpu/drm/nouveau/nv50_graph.c
new file mode 100644
index 000000000000..b203d06f601f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv50_graph.c
@@ -0,0 +1,419 @@
+/*
+ * Copyright (C) 2007 Ben Skeggs.
+ * All Rights Reserved.
+ *
+ * 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 (including the
+ * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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 "drmP.h"
+#include "drm.h"
+#include "nouveau_drv.h"
+
+#include "nouveau_grctx.h"
+
+#define IS_G80 ((dev_priv->chipset & 0xf0) == 0x50)
+
+static void
+nv50_graph_init_reset(struct drm_device *dev)
+{
+        uint32_t pmc_e = NV_PMC_ENABLE_PGRAPH | (1 << 21);
+
+        NV_DEBUG(dev, "\n");
+
+        nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) & ~pmc_e);
+        nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) |  pmc_e);
+}
+
+static void
+nv50_graph_init_intr(struct drm_device *dev)
+{
+        NV_DEBUG(dev, "\n");
+
+        nv_wr32(dev, NV03_PGRAPH_INTR, 0xffffffff);
+        nv_wr32(dev, 0x400138, 0xffffffff);
+        nv_wr32(dev, NV40_PGRAPH_INTR_EN, 0xffffffff);
+}
+
+static void
+nv50_graph_init_regs__nv(struct drm_device *dev)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        uint32_t units = nv_rd32(dev, 0x1540);
+        int i;
+
+        NV_DEBUG(dev, "\n");
+
+        nv_wr32(dev, 0x400804, 0xc0000000);
+        nv_wr32(dev, 0x406800, 0xc0000000);
+        nv_wr32(dev, 0x400c04, 0xc0000000);
+        nv_wr32(dev, 0x401800, 0xc0000000);
+        nv_wr32(dev, 0x405018, 0xc0000000);
+        nv_wr32(dev, 0x402000, 0xc0000000);
+
+        for (i = 0; i < 16; i++) {
+                if (units & 1 << i) {
+                        if (dev_priv->chipset < 0xa0) {
+                                nv_wr32(dev, 0x408900 + (i << 12), 0xc0000000);
+                                nv_wr32(dev, 0x408e08 + (i << 12), 0xc0000000);
+                                nv_wr32(dev, 0x408314 + (i << 12), 0xc0000000);
+                        } else {
+                                nv_wr32(dev, 0x408600 + (i << 11), 0xc0000000);
+                                nv_wr32(dev, 0x408708 + (i << 11), 0xc0000000);
+                                nv_wr32(dev, 0x40831c + (i << 11), 0xc0000000);
+                        }
+                }
+        }
+
+        nv_wr32(dev, 0x400108, 0xffffffff);
+
+        nv_wr32(dev, 0x400824, 0x00004000);
+        nv_wr32(dev, 0x400500, 0x00010001);
+}
+
+static void
+nv50_graph_init_regs(struct drm_device *dev)
+{
+        NV_DEBUG(dev, "\n");
+
+        nv_wr32(dev, NV04_PGRAPH_DEBUG_3,
+                                (1 << 2) /* HW_CONTEXT_SWITCH_ENABLED */);
+        nv_wr32(dev, 0x402ca8, 0x800);
+}
+
+static int
+nv50_graph_init_ctxctl(struct drm_device *dev)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+        NV_DEBUG(dev, "\n");
+
+        if (nouveau_ctxfw) {
+                nouveau_grctx_prog_load(dev);
+                dev_priv->engine.graph.grctx_size = 0x70000;
+        }
+        if (!dev_priv->engine.graph.ctxprog) {
+                struct nouveau_grctx ctx = {};
+                uint32_t *cp = kmalloc(512 * 4, GFP_KERNEL);
+                int i;
+                if (!cp) {
+                        NV_ERROR(dev, "Couldn't alloc ctxprog! Disabling acceleration.\n");
+                        dev_priv->engine.graph.accel_blocked = true;
+                        return 0;
+                }
+                ctx.dev = dev;
+                ctx.mode = NOUVEAU_GRCTX_PROG;
+                ctx.data = cp;
+                ctx.ctxprog_max = 512;
+                if (!nv50_grctx_init(&ctx)) {
+                        dev_priv->engine.graph.grctx_size = ctx.ctxvals_pos * 4;
+
+                        nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
+                        for (i = 0; i < ctx.ctxprog_len; i++)
+                                nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA, cp[i]);
+                } else {
+                        dev_priv->engine.graph.accel_blocked = true;
+                }
+                kfree(cp);
+        }
+
+        nv_wr32(dev, 0x400320, 4);
+        nv_wr32(dev, NV40_PGRAPH_CTXCTL_CUR, 0);
+        nv_wr32(dev, NV20_PGRAPH_CHANNEL_CTX_POINTER, 0);
+        return 0;
+}
+
+int
+nv50_graph_init(struct drm_device *dev)
+{
+        int ret;
+
+        NV_DEBUG(dev, "\n");
+
+        nv50_graph_init_reset(dev);
+        nv50_graph_init_regs__nv(dev);
+        nv50_graph_init_regs(dev);
+        nv50_graph_init_intr(dev);
+
+        ret = nv50_graph_init_ctxctl(dev);
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
+void
+nv50_graph_takedown(struct drm_device *dev)
+{
+        NV_DEBUG(dev, "\n");
+        nouveau_grctx_fini(dev);
+}
+
+void
+nv50_graph_fifo_access(struct drm_device *dev, bool enabled)
+{
+        const uint32_t mask = 0x00010001;
+
+        if (enabled)
+                nv_wr32(dev, 0x400500, nv_rd32(dev, 0x400500) | mask);
+        else
+                nv_wr32(dev, 0x400500, nv_rd32(dev, 0x400500) & ~mask);
+}
+
+struct nouveau_channel *
+nv50_graph_channel(struct drm_device *dev)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        uint32_t inst;
+        int i;
+
+        /* Be sure we're not in the middle of a context switch or bad things
+         * will happen, such as unloading the wrong pgraph context.
+         */
+        if (!nv_wait(0x400300, 0x00000001, 0x00000000))
+                NV_ERROR(dev, "Ctxprog is still running\n");
+
+        inst = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
+        if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
+                return NULL;
+        inst = (inst & NV50_PGRAPH_CTXCTL_CUR_INSTANCE) << 12;
+
+        for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
+                struct nouveau_channel *chan = dev_priv->fifos[i];
+
+                if (chan && chan->ramin && chan->ramin->instance == inst)
+                        return chan;
+        }
+
+        return NULL;
+}
+
+int
+nv50_graph_create_context(struct nouveau_channel *chan)
+{
+        struct drm_device *dev = chan->dev;
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct nouveau_gpuobj *ramin = chan->ramin->gpuobj;
+        struct nouveau_gpuobj *ctx;
+        struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+        int hdr, ret;
+
+        NV_DEBUG(dev, "ch%d\n", chan->id);
+
+        ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, pgraph->grctx_size,
+                                     0x1000, NVOBJ_FLAG_ZERO_ALLOC |
+                                     NVOBJ_FLAG_ZERO_FREE, &chan->ramin_grctx);
+        if (ret)
+                return ret;
+        ctx = chan->ramin_grctx->gpuobj;
+
+        hdr = IS_G80 ? 0x200 : 0x20;
+        dev_priv->engine.instmem.prepare_access(dev, true);
+        nv_wo32(dev, ramin, (hdr + 0x00)/4, 0x00190002);
+        nv_wo32(dev, ramin, (hdr + 0x04)/4, chan->ramin_grctx->instance +
+                                           pgraph->grctx_size - 1);
+        nv_wo32(dev, ramin, (hdr + 0x08)/4, chan->ramin_grctx->instance);
+        nv_wo32(dev, ramin, (hdr + 0x0c)/4, 0);
+        nv_wo32(dev, ramin, (hdr + 0x10)/4, 0);
+        nv_wo32(dev, ramin, (hdr + 0x14)/4, 0x00010000);
+        dev_priv->engine.instmem.finish_access(dev);
+
+        dev_priv->engine.instmem.prepare_access(dev, true);
+        if (!pgraph->ctxprog) {
+                struct nouveau_grctx ctx = {};
+                ctx.dev = chan->dev;
+                ctx.mode = NOUVEAU_GRCTX_VALS;
+                ctx.data = chan->ramin_grctx->gpuobj;
+                nv50_grctx_init(&ctx);
+        } else {
+                nouveau_grctx_vals_load(dev, ctx);
+        }
+        nv_wo32(dev, ctx, 0x00000/4, chan->ramin->instance >> 12);
+        dev_priv->engine.instmem.finish_access(dev);
+
+        return 0;
+}
+
+void
+nv50_graph_destroy_context(struct nouveau_channel *chan)
+{
+        struct drm_device *dev = chan->dev;
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        int i, hdr = IS_G80 ? 0x200 : 0x20;
+
+        NV_DEBUG(dev, "ch%d\n", chan->id);
+
+        if (!chan->ramin || !chan->ramin->gpuobj)
+                return;
+
+        dev_priv->engine.instmem.prepare_access(dev, true);
+        for (i = hdr; i < hdr + 24; i += 4)
+                nv_wo32(dev, chan->ramin->gpuobj, i/4, 0);
+        dev_priv->engine.instmem.finish_access(dev);
+
+        nouveau_gpuobj_ref_del(dev, &chan->ramin_grctx);
+}
+
+static int
+nv50_graph_do_load_context(struct drm_device *dev, uint32_t inst)
+{
+        uint32_t fifo = nv_rd32(dev, 0x400500);
+
+        nv_wr32(dev, 0x400500, fifo & ~1);
+        nv_wr32(dev, 0x400784, inst);
+        nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x40);
+        nv_wr32(dev, 0x400320, nv_rd32(dev, 0x400320) | 0x11);
+        nv_wr32(dev, 0x400040, 0xffffffff);
+        (void)nv_rd32(dev, 0x400040);
+        nv_wr32(dev, 0x400040, 0x00000000);
+        nv_wr32(dev, 0x400304, nv_rd32(dev, 0x400304) | 1);
+
+        if (nouveau_wait_for_idle(dev))
+                nv_wr32(dev, 0x40032c, inst | (1<<31));
+        nv_wr32(dev, 0x400500, fifo);
+
+        return 0;
+}
+
+int
+nv50_graph_load_context(struct nouveau_channel *chan)
+{
+        uint32_t inst = chan->ramin->instance >> 12;
+
+        NV_DEBUG(chan->dev, "ch%d\n", chan->id);
+        return nv50_graph_do_load_context(chan->dev, inst);
+}
+
+int
+nv50_graph_unload_context(struct drm_device *dev)
+{
+        uint32_t inst;
+
+        inst  = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
+        if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
+                return 0;
+        inst &= NV50_PGRAPH_CTXCTL_CUR_INSTANCE;
+
+        nouveau_wait_for_idle(dev);
+        nv_wr32(dev, 0x400784, inst);
+        nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x20);
+        nv_wr32(dev, 0x400304, nv_rd32(dev, 0x400304) | 0x01);
+        nouveau_wait_for_idle(dev);
+
+        nv_wr32(dev, NV50_PGRAPH_CTXCTL_CUR, inst);
+        return 0;
+}
+
+void
+nv50_graph_context_switch(struct drm_device *dev)
+{
+        uint32_t inst;
+
+        nv50_graph_unload_context(dev);
+
+        inst  = nv_rd32(dev, NV50_PGRAPH_CTXCTL_NEXT);
+        inst &= NV50_PGRAPH_CTXCTL_NEXT_INSTANCE;
+        nv50_graph_do_load_context(dev, inst);
+
+        nv_wr32(dev, NV40_PGRAPH_INTR_EN, nv_rd32(dev,
+                NV40_PGRAPH_INTR_EN) | NV_PGRAPH_INTR_CONTEXT_SWITCH);
+}
+
+static int
+nv50_graph_nvsw_dma_vblsem(struct nouveau_channel *chan, int grclass,
+                           int mthd, uint32_t data)
+{
+        struct nouveau_gpuobj_ref *ref = NULL;
+
+        if (nouveau_gpuobj_ref_find(chan, data, &ref))
+                return -ENOENT;
+
+        if (nouveau_notifier_offset(ref->gpuobj, NULL))
+                return -EINVAL;
+
+        chan->nvsw.vblsem = ref->gpuobj;
+        chan->nvsw.vblsem_offset = ~0;
+        return 0;
+}
+
+static int
+nv50_graph_nvsw_vblsem_offset(struct nouveau_channel *chan, int grclass,
+                              int mthd, uint32_t data)
+{
+        if (nouveau_notifier_offset(chan->nvsw.vblsem, &data))
+                return -ERANGE;
+
+        chan->nvsw.vblsem_offset = data >> 2;
+        return 0;
+}
+
+static int
+nv50_graph_nvsw_vblsem_release_val(struct nouveau_channel *chan, int grclass,
+                                   int mthd, uint32_t data)
+{
+        chan->nvsw.vblsem_rval = data;
+        return 0;
+}
+
+static int
+nv50_graph_nvsw_vblsem_release(struct nouveau_channel *chan, int grclass,
+                               int mthd, uint32_t data)
+{
+        struct drm_device *dev = chan->dev;
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+        if (!chan->nvsw.vblsem || chan->nvsw.vblsem_offset == ~0 || data > 1)
+                return -EINVAL;
+
+        if (!(nv_rd32(dev, NV50_PDISPLAY_INTR_EN) &
+                      NV50_PDISPLAY_INTR_EN_VBLANK_CRTC_(data))) {
+                nv_wr32(dev, NV50_PDISPLAY_INTR_1,
+                        NV50_PDISPLAY_INTR_1_VBLANK_CRTC_(data));
+                nv_wr32(dev, NV50_PDISPLAY_INTR_EN, nv_rd32(dev,
+                        NV50_PDISPLAY_INTR_EN) |
+                        NV50_PDISPLAY_INTR_EN_VBLANK_CRTC_(data));
+        }
+
+        list_add(&chan->nvsw.vbl_wait, &dev_priv->vbl_waiting);
+        return 0;
+}
+
+static struct nouveau_pgraph_object_method nv50_graph_nvsw_methods[] = {
+        { 0x018c, nv50_graph_nvsw_dma_vblsem },
+        { 0x0400, nv50_graph_nvsw_vblsem_offset },
+        { 0x0404, nv50_graph_nvsw_vblsem_release_val },
+        { 0x0408, nv50_graph_nvsw_vblsem_release },
+        {}
+};
+
+struct nouveau_pgraph_object_class nv50_graph_grclass[] = {
+        { 0x506e, true, nv50_graph_nvsw_methods }, /* nvsw */
+        { 0x0030, false, NULL }, /* null */
+        { 0x5039, false, NULL }, /* m2mf */
+        { 0x502d, false, NULL }, /* 2d */
+        { 0x50c0, false, NULL }, /* compute */
+        { 0x85c0, false, NULL }, /* compute (nva3, nva5, nva8) */
+        { 0x5097, false, NULL }, /* tesla (nv50) */
+        { 0x8297, false, NULL }, /* tesla (nv8x/nv9x) */
+        { 0x8397, false, NULL }, /* tesla (nva0, nvaa, nvac) */
+        { 0x8597, false, NULL }, /* tesla (nva3, nva5, nva8) */
+        {}
+};