nvc0: bind user uniforms for compute on Kepler

[mesa.git] / src / gallium / drivers / nouveau / nvc0 / nve4_compute.c

/*
 * Copyright 2012 Nouveau Project
 *
 * 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 OR COPYRIGHT HOLDERS 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: Christoph Bumiller
 */

#include "nvc0/nvc0_context.h"
#include "nvc0/nve4_compute.h"

#include "codegen/nv50_ir_driver.h"

#ifdef DEBUG
static void nve4_compute_dump_launch_desc(const struct nve4_cp_launch_desc *);
#endif


int
nve4_screen_compute_setup(struct nvc0_screen *screen,
                          struct nouveau_pushbuf *push)
{
   struct nouveau_device *dev = screen->base.device;
   struct nouveau_object *chan = screen->base.channel;
   int i;
   int ret;
   uint32_t obj_class;
   uint64_t address;

   switch (dev->chipset & ~0xf) {
   case 0x100:
   case 0xf0:
      obj_class = NVF0_COMPUTE_CLASS; /* GK110 */
      break;
   case 0xe0:
      obj_class = NVE4_COMPUTE_CLASS; /* GK104 */
      break;
   case 0x110:
      obj_class = GM107_COMPUTE_CLASS;
      break;
   default:
      NOUVEAU_ERR("unsupported chipset: NV%02x\n", dev->chipset);
      return -1;
   }

   ret = nouveau_object_new(chan, 0xbeef00c0, obj_class, NULL, 0,
                            &screen->compute);
   if (ret) {
      NOUVEAU_ERR("Failed to allocate compute object: %d\n", ret);
      return ret;
   }

   ret = nouveau_bo_new(dev, NV_VRAM_DOMAIN(&screen->base), 0, 1 << 12, NULL,
                        &screen->parm);
   if (ret)
      return ret;

   BEGIN_NVC0(push, SUBC_CP(NV01_SUBCHAN_OBJECT), 1);
   PUSH_DATA (push, screen->compute->oclass);

   BEGIN_NVC0(push, NVE4_CP(TEMP_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, screen->tls->offset);
   PUSH_DATA (push, screen->tls->offset);
   /* No idea why there are 2. Divide size by 2 to be safe.
    * Actually this might be per-MP TEMP size and looks like I'm only using
    * 2 MPs instead of all 8.
    */
   BEGIN_NVC0(push, NVE4_CP(MP_TEMP_SIZE_HIGH(0)), 3);
   PUSH_DATAh(push, screen->tls->size / screen->mp_count);
   PUSH_DATA (push, (screen->tls->size / screen->mp_count) & ~0x7fff);
   PUSH_DATA (push, 0xff);
   BEGIN_NVC0(push, NVE4_CP(MP_TEMP_SIZE_HIGH(1)), 3);
   PUSH_DATAh(push, screen->tls->size / screen->mp_count);
   PUSH_DATA (push, (screen->tls->size / screen->mp_count) & ~0x7fff);
   PUSH_DATA (push, 0xff);

   /* Unified address space ? Who needs that ? Certainly not OpenCL.
    *
    * FATAL: Buffers with addresses inside [0x1000000, 0x3000000] will NOT be
    *  accessible. We cannot prevent that at the moment, so expect failure.
    */
   BEGIN_NVC0(push, NVE4_CP(LOCAL_BASE), 1);
   PUSH_DATA (push, 1 << 24);
   BEGIN_NVC0(push, NVE4_CP(SHARED_BASE), 1);
   PUSH_DATA (push, 2 << 24);

   BEGIN_NVC0(push, NVE4_CP(CODE_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, screen->text->offset);
   PUSH_DATA (push, screen->text->offset);

   BEGIN_NVC0(push, SUBC_CP(0x0310), 1);
   PUSH_DATA (push, (obj_class >= NVF0_COMPUTE_CLASS) ? 0x400 : 0x300);

   /* NOTE: these do not affect the state used by the 3D object */
   BEGIN_NVC0(push, NVE4_CP(TIC_ADDRESS_HIGH), 3);
   PUSH_DATAh(push, screen->txc->offset);
   PUSH_DATA (push, screen->txc->offset);
   PUSH_DATA (push, NVC0_TIC_MAX_ENTRIES - 1);
   BEGIN_NVC0(push, NVE4_CP(TSC_ADDRESS_HIGH), 3);
   PUSH_DATAh(push, screen->txc->offset + 65536);
   PUSH_DATA (push, screen->txc->offset + 65536);
   PUSH_DATA (push, NVC0_TSC_MAX_ENTRIES - 1);

   if (obj_class >= NVF0_COMPUTE_CLASS) {
      /* The blob calls GK110_COMPUTE.FIRMWARE[0x6], along with the args (0x1)
       * passed with GK110_COMPUTE.GRAPH.SCRATCH[0x2]. This is currently
       * disabled because our firmware doesn't support these commands and the
       * GPU hangs if they are used. */
      BEGIN_NIC0(push, SUBC_CP(0x0248), 64);
      for (i = 63; i >= 0; i--)
         PUSH_DATA(push, 0x38000 | i);
      IMMED_NVC0(push, SUBC_CP(NV50_GRAPH_SERIALIZE), 0);
   }

   BEGIN_NVC0(push, NVE4_CP(TEX_CB_INDEX), 1);
   PUSH_DATA (push, 7); /* does not interfere with 3D */

   if (obj_class == NVF0_COMPUTE_CLASS)
      IMMED_NVC0(push, SUBC_CP(0x02c4), 1);

   address = screen->uniform_bo->offset + NVC0_CB_AUX_INFO(5);

   /* MS sample coordinate offsets: these do not work with _ALT modes ! */
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, address + NVC0_CB_AUX_MS_INFO);
   PUSH_DATA (push, address + NVC0_CB_AUX_MS_INFO);
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, 64);
   PUSH_DATA (push, 1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 17);
   PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
   PUSH_DATA (push, 0); /* 0 */
   PUSH_DATA (push, 0);
   PUSH_DATA (push, 1); /* 1 */
   PUSH_DATA (push, 0);
   PUSH_DATA (push, 0); /* 2 */
   PUSH_DATA (push, 1);
   PUSH_DATA (push, 1); /* 3 */
   PUSH_DATA (push, 1);
   PUSH_DATA (push, 2); /* 4 */
   PUSH_DATA (push, 0);
   PUSH_DATA (push, 3); /* 5 */
   PUSH_DATA (push, 0);
   PUSH_DATA (push, 2); /* 6 */
   PUSH_DATA (push, 1);
   PUSH_DATA (push, 3); /* 7 */
   PUSH_DATA (push, 1);

#ifdef NOUVEAU_NVE4_MP_TRAP_HANDLER
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, screen->parm->offset + NVE4_CP_INPUT_TRAP_INFO_PTR);
   PUSH_DATA (push, screen->parm->offset + NVE4_CP_INPUT_TRAP_INFO_PTR);
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, 28);
   PUSH_DATA (push, 1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 8);
   PUSH_DATA (push, 1);
   PUSH_DATA (push, screen->parm->offset + NVE4_CP_PARAM_TRAP_INFO);
   PUSH_DATAh(push, screen->parm->offset + NVE4_CP_PARAM_TRAP_INFO);
   PUSH_DATA (push, screen->tls->offset);
   PUSH_DATAh(push, screen->tls->offset);
   PUSH_DATA (push, screen->tls->size / 2); /* MP TEMP block size */
   PUSH_DATA (push, screen->tls->size / 2 / 64); /* warp TEMP block size */
   PUSH_DATA (push, 0); /* warp cfstack size */
#endif

   BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
   PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB);

   return 0;
}


static void
nve4_compute_validate_surfaces(struct nvc0_context *nvc0)
{
   struct nvc0_screen *screen = nvc0->screen;
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   struct nv50_surface *sf;
   struct nv04_resource *res;
   uint32_t mask;
   unsigned i;
   const unsigned t = 1;
   uint64_t address;

   address = screen->uniform_bo->offset + NVC0_CB_AUX_INFO(5);

   mask = nvc0->surfaces_dirty[t];
   while (mask) {
      i = ffs(mask) - 1;
      mask &= ~(1 << i);

      /*
       * NVE4's surface load/store instructions receive all the information
       * directly instead of via binding points, so we have to supply them.
       */
      BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
      PUSH_DATAh(push, address + NVC0_CB_AUX_BUF_INFO(i));
      PUSH_DATA (push, address + NVC0_CB_AUX_BUF_INFO(i));
      BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
      PUSH_DATA (push, 64);
      PUSH_DATA (push, 1);
      BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 17);
      PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));

      nve4_set_surface_info(push, nvc0->surfaces[t][i], screen);

      sf = nv50_surface(nvc0->surfaces[t][i]);
      if (sf) {
         res = nv04_resource(sf->base.texture);

         if (sf->base.writable)
            BCTX_REFN(nvc0->bufctx_cp, CP_SUF, res, RDWR);
         else
            BCTX_REFN(nvc0->bufctx_cp, CP_SUF, res, RD);
      }
   }
   if (nvc0->surfaces_dirty[t]) {
      BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
      PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB);
   }

   /* re-reference non-dirty surfaces */
   mask = nvc0->surfaces_valid[t] & ~nvc0->surfaces_dirty[t];
   while (mask) {
      i = ffs(mask) - 1;
      mask &= ~(1 << i);

      sf = nv50_surface(nvc0->surfaces[t][i]);
      res = nv04_resource(sf->base.texture);

      if (sf->base.writable)
         BCTX_REFN(nvc0->bufctx_cp, CP_SUF, res, RDWR);
      else
         BCTX_REFN(nvc0->bufctx_cp, CP_SUF, res, RD);
   }

   nvc0->surfaces_dirty[t] = 0;
}


/* Thankfully, textures with samplers follow the normal rules. */
static void
nve4_compute_validate_samplers(struct nvc0_context *nvc0)
{
   bool need_flush = nve4_validate_tsc(nvc0, 5);
   if (need_flush) {
      BEGIN_NVC0(nvc0->base.pushbuf, NVE4_CP(TSC_FLUSH), 1);
      PUSH_DATA (nvc0->base.pushbuf, 0);
   }
}
/* (Code duplicated at bottom for various non-convincing reasons.
 *  E.g. we might want to use the COMPUTE subchannel to upload TIC/TSC
 *  entries to avoid a subchannel switch.
 *  Same for texture cache flushes.
 *  Also, the bufctx differs, and more IFs in the 3D version looks ugly.)
 */
static void nve4_compute_validate_textures(struct nvc0_context *);

static void
nve4_compute_set_tex_handles(struct nvc0_context *nvc0)
{
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   struct nvc0_screen *screen = nvc0->screen;
   uint64_t address;
   const unsigned s = nvc0_shader_stage(PIPE_SHADER_COMPUTE);
   unsigned i, n;
   uint32_t dirty = nvc0->textures_dirty[s] | nvc0->samplers_dirty[s];

   if (!dirty)
      return;
   i = ffs(dirty) - 1;
   n = util_logbase2(dirty) + 1 - i;
   assert(n);

   address = screen->uniform_bo->offset + NVC0_CB_AUX_INFO(s);

   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, address + NVC0_CB_AUX_TEX_INFO(i));
   PUSH_DATA (push, address + NVC0_CB_AUX_TEX_INFO(i));
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, n * 4);
   PUSH_DATA (push, 0x1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + n);
   PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
   PUSH_DATAp(push, &nvc0->tex_handles[s][i], n);

   BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
   PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB);

   nvc0->textures_dirty[s] = 0;
   nvc0->samplers_dirty[s] = 0;
}

static void
nve4_compute_validate_constbufs(struct nvc0_context *nvc0)
{
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   const int s = 5;

   while (nvc0->constbuf_dirty[s]) {
      int i = ffs(nvc0->constbuf_dirty[s]) - 1;
      nvc0->constbuf_dirty[s] &= ~(1 << i);

      if (nvc0->constbuf[s][i].user) {
         struct nouveau_bo *bo = nvc0->screen->uniform_bo;
         const unsigned base = NVC0_CB_USR_INFO(s);
         const unsigned size = nvc0->constbuf[s][0].size;
         assert(i == 0); /* we really only want OpenGL uniforms here */
         assert(nvc0->constbuf[s][0].u.data);

         BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
         PUSH_DATAh(push, bo->offset + base);
         PUSH_DATA (push, bo->offset + base);
         BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
         PUSH_DATA (push, size);
         PUSH_DATA (push, 0x1);
         BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + (size / 4));
         PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
         PUSH_DATAp(push, nvc0->constbuf[s][0].u.data, size / 4);
      }
      else {
         /* TODO: will be updated in the next commit */
      }
   }

   BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
   PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB);
}

static void
nve4_compute_validate_buffers(struct nvc0_context *nvc0)
{
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   uint64_t address;
   const int s = 5;
   int i;

   address = nvc0->screen->uniform_bo->offset + NVC0_CB_AUX_INFO(s);

   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, address + NVC0_CB_AUX_BUF_INFO(0));
   PUSH_DATA (push, address + NVC0_CB_AUX_BUF_INFO(0));
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, 4 * NVC0_MAX_BUFFERS * 4);
   PUSH_DATA (push, 0x1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + 4 * NVC0_MAX_BUFFERS);
   PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));

   for (i = 0; i < NVC0_MAX_BUFFERS; i++) {
      if (nvc0->buffers[s][i].buffer) {
         struct nv04_resource *res =
            nv04_resource(nvc0->buffers[s][i].buffer);
         PUSH_DATA (push, res->address + nvc0->buffers[s][i].buffer_offset);
         PUSH_DATAh(push, res->address + nvc0->buffers[s][i].buffer_offset);
         PUSH_DATA (push, nvc0->buffers[s][i].buffer_size);
         PUSH_DATA (push, 0);
         BCTX_REFN(nvc0->bufctx_cp, CP_BUF, res, RDWR);
      } else {
         PUSH_DATA (push, 0);
         PUSH_DATA (push, 0);
         PUSH_DATA (push, 0);
         PUSH_DATA (push, 0);
      }
   }
}

static struct nvc0_state_validate
validate_list_cp[] = {
   { nvc0_compprog_validate,              NVC0_NEW_CP_PROGRAM     },
   { nve4_compute_validate_textures,      NVC0_NEW_CP_TEXTURES    },
   { nve4_compute_validate_samplers,      NVC0_NEW_CP_SAMPLERS    },
   { nve4_compute_set_tex_handles,        NVC0_NEW_CP_TEXTURES |
                                          NVC0_NEW_CP_SAMPLERS    },
   { nve4_compute_validate_surfaces,      NVC0_NEW_CP_SURFACES    },
   { nvc0_compute_validate_globals,       NVC0_NEW_CP_GLOBALS     },
   { nve4_compute_validate_buffers,       NVC0_NEW_CP_BUFFERS     },
   { nve4_compute_validate_constbufs,     NVC0_NEW_CP_CONSTBUF    },
};

static bool
nve4_state_validate_cp(struct nvc0_context *nvc0, uint32_t mask)
{
   bool ret;

   ret = nvc0_state_validate(nvc0, mask, validate_list_cp,
                             ARRAY_SIZE(validate_list_cp), &nvc0->dirty_cp,
                             nvc0->bufctx_cp);

   if (unlikely(nvc0->state.flushed))
      nvc0_bufctx_fence(nvc0, nvc0->bufctx_cp, true);
   return ret;
}

static void
nve4_compute_upload_input(struct nvc0_context *nvc0,
                          struct nve4_cp_launch_desc *desc,
                          const void *input,
                          const uint *block_layout,
                          const uint *grid_layout)
{
   struct nvc0_screen *screen = nvc0->screen;
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   struct nvc0_program *cp = nvc0->compprog;
   uint64_t address;

   address = screen->uniform_bo->offset + NVC0_CB_AUX_INFO(5);

   if (cp->parm_size) {
      BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
      PUSH_DATAh(push, screen->parm->offset);
      PUSH_DATA (push, screen->parm->offset);
      BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
      PUSH_DATA (push, cp->parm_size);
      PUSH_DATA (push, 0x1);
      BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + (cp->parm_size / 4));
      PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
      PUSH_DATAp(push, input, cp->parm_size / 4);

      /* Bind user parameters coming from clover. */
      /* TODO: This should be harmonized with uniform_bo. */
      assert(!(desc->cb_mask & (1 << 0)));
      nve4_cp_launch_desc_set_cb(desc, 0, screen->parm, 0, 1 << 12);
   }
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, address + NVC0_CB_AUX_GRID_INFO);
   PUSH_DATA (push, address + NVC0_CB_AUX_GRID_INFO);
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, 7 * 4);
   PUSH_DATA (push, 0x1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + 7);
   PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
   PUSH_DATAp(push, block_layout, 3);
   PUSH_DATAp(push, grid_layout, 3);
   PUSH_DATA (push, 0);

   BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
   PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB);
}

static inline uint8_t
nve4_compute_derive_cache_split(struct nvc0_context *nvc0, uint32_t shared_size)
{
   if (shared_size > (32 << 10))
      return NVC0_3D_CACHE_SPLIT_48K_SHARED_16K_L1;
   if (shared_size > (16 << 10))
      return NVE4_3D_CACHE_SPLIT_32K_SHARED_32K_L1;
   return NVC1_3D_CACHE_SPLIT_16K_SHARED_48K_L1;
}

static void
nve4_compute_setup_launch_desc(struct nvc0_context *nvc0,
                               struct nve4_cp_launch_desc *desc,
                               uint32_t label,
                               const uint *block_layout,
                               const uint *grid_layout)
{
   const struct nvc0_screen *screen = nvc0->screen;
   const struct nvc0_program *cp = nvc0->compprog;

   nve4_cp_launch_desc_init_default(desc);

   desc->entry = nvc0_program_symbol_offset(cp, label);

   desc->griddim_x = grid_layout[0];
   desc->griddim_y = grid_layout[1];
   desc->griddim_z = grid_layout[2];
   desc->blockdim_x = block_layout[0];
   desc->blockdim_y = block_layout[1];
   desc->blockdim_z = block_layout[2];

   desc->shared_size = align(cp->cp.smem_size, 0x100);
   desc->local_size_p = align(cp->cp.lmem_size, 0x10);
   desc->local_size_n = 0;
   desc->cstack_size = 0x800;
   desc->cache_split = nve4_compute_derive_cache_split(nvc0, cp->cp.smem_size);

   desc->gpr_alloc = cp->num_gprs;
   desc->bar_alloc = cp->num_barriers;

   // Only bind OpenGL uniforms and the driver constant buffer through the
   // launch descriptor because UBOs are sticked to the driver cb to avoid the
   // limitation of 8 CBs.
   if (nvc0->constbuf[5][0].user) {
      nve4_cp_launch_desc_set_cb(desc, 0, screen->uniform_bo,
                                 NVC0_CB_USR_INFO(5), 1 << 16);
   }
   nve4_cp_launch_desc_set_cb(desc, 7, screen->uniform_bo,
                              NVC0_CB_AUX_INFO(5), 1 << 10);
}

static inline struct nve4_cp_launch_desc *
nve4_compute_alloc_launch_desc(struct nouveau_context *nv,
                               struct nouveau_bo **pbo, uint64_t *pgpuaddr)
{
   uint8_t *ptr = nouveau_scratch_get(nv, 512, pgpuaddr, pbo);
   if (!ptr)
      return NULL;
   if (*pgpuaddr & 255) {
      unsigned adj = 256 - (*pgpuaddr & 255);
      ptr += adj;
      *pgpuaddr += adj;
   }
   return (struct nve4_cp_launch_desc *)ptr;
}

void
nve4_launch_grid(struct pipe_context *pipe, const struct pipe_grid_info *info)
{
   struct nvc0_context *nvc0 = nvc0_context(pipe);
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   struct nve4_cp_launch_desc *desc;
   uint64_t desc_gpuaddr;
   struct nouveau_bo *desc_bo;
   int ret;

   desc = nve4_compute_alloc_launch_desc(&nvc0->base, &desc_bo, &desc_gpuaddr);
   if (!desc) {
      ret = -1;
      goto out;
   }
   BCTX_REFN_bo(nvc0->bufctx_cp, CP_DESC, NOUVEAU_BO_GART | NOUVEAU_BO_RD,
                desc_bo);

   ret = !nve4_state_validate_cp(nvc0, ~0);
   if (ret)
      goto out;

   nve4_compute_setup_launch_desc(nvc0, desc, info->pc,
                                  info->block, info->grid);

   nve4_compute_upload_input(nvc0, desc, info->input, info->block, info->grid);

#ifdef DEBUG
   if (debug_get_num_option("NV50_PROG_DEBUG", 0))
      nve4_compute_dump_launch_desc(desc);
#endif

   /* upload descriptor and flush */
#if 0
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
   PUSH_DATAh(push, desc_gpuaddr);
   PUSH_DATA (push, desc_gpuaddr);
   BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
   PUSH_DATA (push, 256);
   PUSH_DATA (push, 1);
   BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 1 + (256 / 4));
   PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x08 << 1));
   PUSH_DATAp(push, (const uint32_t *)desc, 256 / 4);
   BEGIN_NVC0(push, NVE4_CP(FLUSH), 1);
   PUSH_DATA (push, NVE4_COMPUTE_FLUSH_CB | NVE4_COMPUTE_FLUSH_CODE);
#endif
   BEGIN_NVC0(push, NVE4_CP(LAUNCH_DESC_ADDRESS), 1);
   PUSH_DATA (push, desc_gpuaddr >> 8);
   BEGIN_NVC0(push, NVE4_CP(LAUNCH), 1);
   PUSH_DATA (push, 0x3);
   BEGIN_NVC0(push, SUBC_CP(NV50_GRAPH_SERIALIZE), 1);
   PUSH_DATA (push, 0);

out:
   if (ret)
      NOUVEAU_ERR("Failed to launch grid !\n");
   nouveau_scratch_done(&nvc0->base);
   nouveau_bufctx_reset(nvc0->bufctx_cp, NVC0_BIND_CP_DESC);
}


#define NVE4_TIC_ENTRY_INVALID 0x000fffff

static void
nve4_compute_validate_textures(struct nvc0_context *nvc0)
{
   struct nouveau_bo *txc = nvc0->screen->txc;
   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
   const unsigned s = 5;
   unsigned i;
   uint32_t commands[2][32];
   unsigned n[2] = { 0, 0 };

   for (i = 0; i < nvc0->num_textures[s]; ++i) {
      struct nv50_tic_entry *tic = nv50_tic_entry(nvc0->textures[s][i]);
      struct nv04_resource *res;
      const bool dirty = !!(nvc0->textures_dirty[s] & (1 << i));

      if (!tic) {
         nvc0->tex_handles[s][i] |= NVE4_TIC_ENTRY_INVALID;
         continue;
      }
      res = nv04_resource(tic->pipe.texture);

      if (tic->id < 0) {
         tic->id = nvc0_screen_tic_alloc(nvc0->screen, tic);

         PUSH_SPACE(push, 16);
         BEGIN_NVC0(push, NVE4_CP(UPLOAD_DST_ADDRESS_HIGH), 2);
         PUSH_DATAh(push, txc->offset + (tic->id * 32));
         PUSH_DATA (push, txc->offset + (tic->id * 32));
         BEGIN_NVC0(push, NVE4_CP(UPLOAD_LINE_LENGTH_IN), 2);
         PUSH_DATA (push, 32);
         PUSH_DATA (push, 1);
         BEGIN_1IC0(push, NVE4_CP(UPLOAD_EXEC), 9);
         PUSH_DATA (push, NVE4_COMPUTE_UPLOAD_EXEC_LINEAR | (0x20 << 1));
         PUSH_DATAp(push, &tic->tic[0], 8);

         commands[0][n[0]++] = (tic->id << 4) | 1;
      } else
      if (res->status & NOUVEAU_BUFFER_STATUS_GPU_WRITING) {
         commands[1][n[1]++] = (tic->id << 4) | 1;
      }
      nvc0->screen->tic.lock[tic->id / 32] |= 1 << (tic->id % 32);

      res->status &= ~NOUVEAU_BUFFER_STATUS_GPU_WRITING;
      res->status |=  NOUVEAU_BUFFER_STATUS_GPU_READING;

      nvc0->tex_handles[s][i] &= ~NVE4_TIC_ENTRY_INVALID;
      nvc0->tex_handles[s][i] |= tic->id;
      if (dirty)
         BCTX_REFN(nvc0->bufctx_cp, CP_TEX(i), res, RD);
   }
   for (; i < nvc0->state.num_textures[s]; ++i)
      nvc0->tex_handles[s][i] |= NVE4_TIC_ENTRY_INVALID;

   if (n[0]) {
      BEGIN_NIC0(push, NVE4_CP(TIC_FLUSH), n[0]);
      PUSH_DATAp(push, commands[0], n[0]);
   }
   if (n[1]) {
      BEGIN_NIC0(push, NVE4_CP(TEX_CACHE_CTL), n[1]);
      PUSH_DATAp(push, commands[1], n[1]);
   }

   nvc0->state.num_textures[s] = nvc0->num_textures[s];
}


#ifdef DEBUG
static const char *nve4_cache_split_name(unsigned value)
{
   switch (value) {
   case NVC1_3D_CACHE_SPLIT_16K_SHARED_48K_L1: return "16K_SHARED_48K_L1";
   case NVE4_3D_CACHE_SPLIT_32K_SHARED_32K_L1: return "32K_SHARED_32K_L1";
   case NVC0_3D_CACHE_SPLIT_48K_SHARED_16K_L1: return "48K_SHARED_16K_L1";
   default:
      return "(invalid)";
   }
}

static void
nve4_compute_dump_launch_desc(const struct nve4_cp_launch_desc *desc)
{
   const uint32_t *data = (const uint32_t *)desc;
   unsigned i;
   bool zero = false;

   debug_printf("COMPUTE LAUNCH DESCRIPTOR:\n");

   for (i = 0; i < sizeof(*desc); i += 4) {
      if (data[i / 4]) {
         debug_printf("[%x]: 0x%08x\n", i, data[i / 4]);
         zero = false;
      } else
      if (!zero) {
         debug_printf("...\n");
         zero = true;
      }
   }

   debug_printf("entry = 0x%x\n", desc->entry);
   debug_printf("grid dimensions = %ux%ux%u\n",
                desc->griddim_x, desc->griddim_y, desc->griddim_z);
   debug_printf("block dimensions = %ux%ux%u\n",
                desc->blockdim_x, desc->blockdim_y, desc->blockdim_z);
   debug_printf("s[] size: 0x%x\n", desc->shared_size);
   debug_printf("l[] size: -0x%x / +0x%x\n",
                desc->local_size_n, desc->local_size_p);
   debug_printf("stack size: 0x%x\n", desc->cstack_size);
   debug_printf("barrier count: %u\n", desc->bar_alloc);
   debug_printf("$r count: %u\n", desc->gpr_alloc);
   debug_printf("cache split: %s\n", nve4_cache_split_name(desc->cache_split));

   for (i = 0; i < 8; ++i) {
      uint64_t address;
      uint32_t size = desc->cb[i].size;
      bool valid = !!(desc->cb_mask & (1 << i));

      address = ((uint64_t)desc->cb[i].address_h << 32) | desc->cb[i].address_l;

      if (!valid && !address && !size)
         continue;
      debug_printf("CB[%u]: address = 0x%"PRIx64", size 0x%x%s\n",
                   i, address, size, valid ? "" : "  (invalid)");
   }
}
#endif

#ifdef NOUVEAU_NVE4_MP_TRAP_HANDLER
static void
nve4_compute_trap_info(struct nvc0_context *nvc0)
{
   struct nvc0_screen *screen = nvc0->screen;
   struct nouveau_bo *bo = screen->parm;
   int ret, i;
   volatile struct nve4_mp_trap_info *info;
   uint8_t *map;

   ret = nouveau_bo_map(bo, NOUVEAU_BO_RDWR, nvc0->base.client);
   if (ret)
      return;
   map = (uint8_t *)bo->map;
   info = (volatile struct nve4_mp_trap_info *)(map + NVE4_CP_PARAM_TRAP_INFO);

   if (info->lock) {
      debug_printf("trapstat = %08x\n", info->trapstat);
      debug_printf("warperr = %08x\n", info->warperr);
      debug_printf("PC = %x\n", info->pc);
      debug_printf("tid = %u %u %u\n",
                   info->tid[0], info->tid[1], info->tid[2]);
      debug_printf("ctaid = %u %u %u\n",
                   info->ctaid[0], info->ctaid[1], info->ctaid[2]);
      for (i = 0; i <= 63; ++i)
         debug_printf("$r%i = %08x\n", i, info->r[i]);
      for (i = 0; i <= 6; ++i)
         debug_printf("$p%i = %i\n", i, (info->flags >> i) & 1);
      debug_printf("$c = %x\n", info->flags >> 12);
   }
   info->lock = 0;
}
#endif