/*
 * Copyright © 2020 Valve Corporation
 *
 * based on amdgpu winsys.
 * Copyright © 2016 Red Hat.
 * Copyright © 2016 Bas Nieuwenhuizen
 *
 * 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 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.
 */
#include "radv_null_winsys_public.h"

#include "radv_null_bo.h"
#include "radv_null_cs.h"

/* Hardcode some GPU info that are needed for the driver or for some tools. */
static const struct {
   uint32_t pci_id;
   uint32_t num_render_backends;
   bool has_dedicated_vram;
} gpu_info[] = {
   [CHIP_TAHITI] = {0x6780, 8, true},
   [CHIP_PITCAIRN] = {0x6800, 8, true},
   [CHIP_VERDE] = {0x6820, 4, true},
   [CHIP_OLAND] = {0x6060, 2, true},
   [CHIP_HAINAN] = {0x6660, 2, true},
   [CHIP_BONAIRE] = {0x6640, 4, true},
   [CHIP_KAVERI] = {0x1304, 2, false},
   [CHIP_KABINI] = {0x9830, 2, false},
   [CHIP_HAWAII] = {0x67A0, 16, true},
   [CHIP_TONGA] = {0x6920, 8, true},
   [CHIP_ICELAND] = {0x6900, 2, true},
   [CHIP_CARRIZO] = {0x9870, 2, false},
   [CHIP_FIJI] = {0x7300, 16, true},
   [CHIP_STONEY] = {0x98E4, 2, false},
   [CHIP_POLARIS10] = {0x67C0, 8, true},
   [CHIP_POLARIS11] = {0x67E0, 4, true},
   [CHIP_POLARIS12] = {0x6980, 4, true},
   [CHIP_VEGAM] = {0x694C, 4, true},
   [CHIP_VEGA10] = {0x6860, 16, true},
   [CHIP_VEGA12] = {0x69A0, 8, true},
   [CHIP_VEGA20] = {0x66A0, 16, true},
   [CHIP_RAVEN] = {0x15DD, 2, false},
   [CHIP_RENOIR] = {0x1636, 2, false},
   [CHIP_ARCTURUS] = {0x738C, 2, true},
   [CHIP_NAVI10] = {0x7310, 16, true},
   [CHIP_NAVI12] = {0x7360, 8, true},
   [CHIP_NAVI14] = {0x7340, 8, true},
   [CHIP_SIENNA_CICHLID] = {0x73A0, 8, true},
   [CHIP_VANGOGH] = {0x163F, 8, false},
   [CHIP_NAVY_FLOUNDER] = {0x73C0, 8, true},
   [CHIP_DIMGREY_CAVEFISH] = {0x73E0, 8, true},
};

static void
radv_null_winsys_query_info(struct radeon_winsys *rws, struct radeon_info *info)
{
   const char *family = getenv("RADV_FORCE_FAMILY");
   unsigned i;

   info->chip_class = CLASS_UNKNOWN;
   info->family = CHIP_UNKNOWN;

   for (i = CHIP_TAHITI; i < CHIP_LAST; i++) {
      if (!strcmp(family, ac_get_family_name(i))) {
         /* Override family and chip_class. */
         info->family = i;
         info->name = "OVERRIDDEN";

         if (i >= CHIP_SIENNA_CICHLID)
            info->chip_class = GFX10_3;
         else if (i >= CHIP_NAVI10)
            info->chip_class = GFX10;
         else if (i >= CHIP_VEGA10)
            info->chip_class = GFX9;
         else if (i >= CHIP_TONGA)
            info->chip_class = GFX8;
         else if (i >= CHIP_BONAIRE)
            info->chip_class = GFX7;
         else
            info->chip_class = GFX6;
      }
   }

   if (info->family == CHIP_UNKNOWN) {
      fprintf(stderr, "radv: Unknown family: %s\n", family);
      abort();
   }

   info->pci_id = gpu_info[info->family].pci_id;
   info->max_se = 4;
   info->num_se = 4;
   if (info->chip_class >= GFX10_3)
      info->max_wave64_per_simd = 16;
   else if (info->chip_class >= GFX10)
      info->max_wave64_per_simd = 20;
   else if (info->family >= CHIP_POLARIS10 && info->family <= CHIP_VEGAM)
      info->max_wave64_per_simd = 8;
   else
      info->max_wave64_per_simd = 10;

   if (info->chip_class >= GFX10)
      info->num_physical_sgprs_per_simd = 128 * info->max_wave64_per_simd * 2;
   else if (info->chip_class >= GFX8)
      info->num_physical_sgprs_per_simd = 800;
   else
      info->num_physical_sgprs_per_simd = 512;

   info->num_physical_wave64_vgprs_per_simd = info->chip_class >= GFX10 ? 512 : 256;
   info->num_simd_per_compute_unit = info->chip_class >= GFX10 ? 2 : 4;
   info->lds_size_per_workgroup = info->chip_class >= GFX10 ? 128 * 1024 : 64 * 1024;
   info->lds_encode_granularity = info->chip_class >= GFX7 ? 128 * 4 : 64 * 4;
   info->lds_alloc_granularity =
      info->chip_class >= GFX10_3 ? 256 * 4 : info->lds_encode_granularity;
   info->max_render_backends = gpu_info[info->family].num_render_backends;

   info->has_dedicated_vram = gpu_info[info->family].has_dedicated_vram;
   info->has_packed_math_16bit = info->chip_class >= GFX9;

   info->has_image_load_dcc_bug =
      info->family == CHIP_DIMGREY_CAVEFISH || info->family == CHIP_VANGOGH;

   info->has_accelerated_dot_product =
      info->family == CHIP_ARCTURUS || info->family == CHIP_ALDEBARAN ||
      info->family == CHIP_VEGA20 || info->family >= CHIP_NAVI12;

   info->address32_hi = info->chip_class >= GFX9 ? 0xffff8000u : 0x0;

   info->has_rbplus = info->family == CHIP_STONEY || info->chip_class >= GFX9;
   info->rbplus_allowed =
      info->has_rbplus &&
      (info->family == CHIP_STONEY || info->family == CHIP_VEGA12 || info->family == CHIP_RAVEN ||
       info->family == CHIP_RAVEN2 || info->family == CHIP_RENOIR || info->chip_class >= GFX10_3);

}

static void
radv_null_winsys_destroy(struct radeon_winsys *rws)
{
   FREE(rws);
}

struct radeon_winsys *
radv_null_winsys_create()
{
   struct radv_null_winsys *ws;

   ws = calloc(1, sizeof(struct radv_null_winsys));
   if (!ws)
      return NULL;

   ws->base.destroy = radv_null_winsys_destroy;
   ws->base.query_info = radv_null_winsys_query_info;
   radv_null_bo_init_functions(ws);
   radv_null_cs_init_functions(ws);

   return &ws->base;
}