iris: ref/unref the GLSL type singleton in screen_create/destroy
[mesa.git] / src / gallium / drivers / iris / iris_screen.c
index 1216933c66de6e25f83eb93d216e54cd7d38c16d..3b391f1db5d309177dd03ee9994347c8289d6c22 100644 (file)
 #include "pipe/p_state.h"
 #include "pipe/p_context.h"
 #include "pipe/p_screen.h"
+#include "util/debug.h"
 #include "util/u_inlines.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
+#include "util/u_transfer_helper.h"
 #include "util/u_upload_mgr.h"
 #include "util/ralloc.h"
+#include "util/xmlconfig.h"
 #include "drm-uapi/i915_drm.h"
 #include "iris_context.h"
 #include "iris_defines.h"
 #include "iris_pipe.h"
 #include "iris_resource.h"
 #include "iris_screen.h"
+#include "compiler/glsl_types.h"
 #include "intel/compiler/brw_compiler.h"
+#include "intel/common/gen_gem.h"
+#include "intel/common/gen_l3_config.h"
+#include "iris_monitor.h"
 
 static void
 iris_flush_frontbuffer(struct pipe_screen *_screen,
@@ -61,7 +68,7 @@ iris_flush_frontbuffer(struct pipe_screen *_screen,
 static const char *
 iris_get_vendor(struct pipe_screen *pscreen)
 {
-   return "Mesa Project";
+   return "Intel";
 }
 
 static const char *
@@ -74,17 +81,14 @@ static const char *
 iris_get_name(struct pipe_screen *pscreen)
 {
    struct iris_screen *screen = (struct iris_screen *)pscreen;
-   const char *chipset;
+   static char buf[128];
+   const char *name = gen_get_device_name(screen->pci_id);
 
-   switch (screen->pci_id) {
-#undef CHIPSET
-#define CHIPSET(id, symbol, str) case id: chipset = str; break;
-#include "pci_ids/i965_pci_ids.h"
-   default:
-      chipset = "Unknown Intel Chipset";
-      break;
-   }
-   return &chipset[9];
+   if (!name)
+      name = "Intel Unknown";
+
+   snprintf(buf, sizeof(buf), "Mesa %s", name);
+   return buf;
 }
 
 static int
@@ -102,8 +106,11 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_SWIZZLE:
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_PRIMITIVE_RESTART:
+   case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
    case PIPE_CAP_INDEP_BLEND_FUNC:
    case PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND:
@@ -125,16 +132,19 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_MULTISAMPLE:
    case PIPE_CAP_CUBE_MAP_ARRAY:
    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
-   case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
+   case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
    case PIPE_CAP_TEXTURE_QUERY_LOD:
    case PIPE_CAP_SAMPLE_SHADING:
    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
    case PIPE_CAP_DRAW_INDIRECT:
+   case PIPE_CAP_MULTI_DRAW_INDIRECT:
+   case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
+   case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    case PIPE_CAP_ACCELERATED:
    case PIPE_CAP_UMA:
    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
@@ -144,9 +154,9 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_DOUBLES:
    case PIPE_CAP_INT64:
    case PIPE_CAP_INT64_DIVMOD:
-   case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SAMPLER_VIEW_TARGET:
    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
+   case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
    case PIPE_CAP_CULL_DISTANCE:
@@ -155,32 +165,57 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
-   case PIPE_CAP_POST_DEPTH_COVERAGE:
    case PIPE_CAP_QUERY_SO_OVERFLOW:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
    case PIPE_CAP_TGSI_TEX_TXF_LZ:
    case PIPE_CAP_TGSI_TXQS:
-   case PIPE_CAP_TGSI_FS_FBFETCH:
    case PIPE_CAP_TGSI_CLOCK:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
    case PIPE_CAP_CLEAR_TEXTURE:
+   case PIPE_CAP_CLEAR_SCISSORED:
    case PIPE_CAP_TGSI_VOTE:
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
    case PIPE_CAP_TEXTURE_GATHER_SM5:
    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
    case PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS:
-   case PIPE_CAP_SHADER_STENCIL_EXPORT:
    case PIPE_CAP_LOAD_CONSTBUF:
+   case PIPE_CAP_NIR_COMPACT_ARRAYS:
+   case PIPE_CAP_DRAW_PARAMETERS:
+   case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
+   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
+   case PIPE_CAP_COMPUTE_SHADER_DERIVATIVES:
+   case PIPE_CAP_INVALIDATE_BUFFER:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
+   case PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED:
+   case PIPE_CAP_TEXTURE_SHADOW_LOD:
+   case PIPE_CAP_SHADER_SAMPLES_IDENTICAL:
+   case PIPE_CAP_GL_SPIRV:
+   case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
+   case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
+   case PIPE_CAP_NATIVE_FENCE_FD:
+   case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
       return true;
-
+   case PIPE_CAP_FBFETCH:
+      return BRW_MAX_DRAW_BUFFERS;
+   case PIPE_CAP_FBFETCH_COHERENT:
+   case PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE:
+   case PIPE_CAP_POST_DEPTH_COVERAGE:
+   case PIPE_CAP_SHADER_STENCIL_EXPORT:
+   case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
+   case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
+   case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
+      return devinfo->gen >= 9;
+   case PIPE_CAP_DEPTH_BOUNDS_TEST:
+      return devinfo->gen >= 12;
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
       return 1;
    case PIPE_CAP_MAX_RENDER_TARGETS:
       return BRW_MAX_DRAW_BUFFERS;
-   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+   case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
+      return 16384;
    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
-      return 15; /* 16384x16384 */
+      return IRIS_MAX_MIPLEVELS; /* 16384x16384 */
    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
       return 12; /* 2048x2048 */
    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
@@ -192,12 +227,13 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
       return BRW_MAX_SOL_BINDINGS;
    case PIPE_CAP_GLSL_FEATURE_LEVEL:
-      return 460;
    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
-      return 140;
+      return 460;
    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
       /* 3DSTATE_CONSTANT_XS requires the start of UBOs to be 32B aligned */
       return 32;
+   case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
+      return IRIS_MAP_BUFFER_ALIGNMENT;
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       /* Choose a cacheline (64 bytes) so that we can safely have the CPU and
        * GPU writing the same SSBO on non-coherent systems (Atom CPUs).  With
@@ -212,7 +248,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
       return 16; // XXX: u_screen says 256 is the minimum value...
    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return true; // XXX: ?????
+      return true;
    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
       return IRIS_MAX_TEXTURE_BUFFER_SIZE;
    case PIPE_CAP_MAX_VIEWPORTS:
@@ -235,9 +271,30 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 0x8086;
    case PIPE_CAP_DEVICE_ID:
       return screen->pci_id;
-   case PIPE_CAP_VIDEO_MEMORY:
-      return 0xffffffff; // XXX: bogus
+   case PIPE_CAP_VIDEO_MEMORY: {
+      /* Once a batch uses more than 75% of the maximum mappable size, we
+       * assume that there's some fragmentation, and we start doing extra
+       * flushing, etc.  That's the big cliff apps will care about.
+       */
+      const unsigned gpu_mappable_megabytes =
+         (devinfo->aperture_bytes * 3 / 4) / (1024 * 1024);
+
+      const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
+      const long system_page_size = sysconf(_SC_PAGE_SIZE);
+
+      if (system_memory_pages <= 0 || system_page_size <= 0)
+         return -1;
+
+      const uint64_t system_memory_bytes =
+         (uint64_t) system_memory_pages * (uint64_t) system_page_size;
+
+      const unsigned system_memory_megabytes =
+         (unsigned) (system_memory_bytes / (1024 * 1024));
+
+      return MIN2(system_memory_megabytes, gpu_mappable_megabytes);
+   }
    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
+   case PIPE_CAP_MAX_VARYINGS:
       return 32;
    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
       /* AMD_pinned_memory assumes the flexibility of using client memory
@@ -248,6 +305,16 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
        * illegal snoop <-> snoop transfers.
        */
       return devinfo->has_llc;
+   case PIPE_CAP_THROTTLE:
+      return screen->driconf.disable_throttling ? 0 : 1;
+
+   case PIPE_CAP_CONTEXT_PRIORITY_MASK:
+      return PIPE_CONTEXT_PRIORITY_LOW |
+             PIPE_CONTEXT_PRIORITY_MEDIUM |
+             PIPE_CONTEXT_PRIORITY_HIGH;
+
+   case PIPE_CAP_FRONTEND_NOOP:
+      return true;
 
    // XXX: don't hardcode 00:00:02.0 PCI here
    case PIPE_CAP_PCI_GROUP:
@@ -259,6 +326,10 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_PCI_FUNCTION:
       return 0;
 
+   case PIPE_CAP_OPENCL_INTEGER_FUNCTIONS:
+   case PIPE_CAP_INTEGER_MULTIPLY_32X16:
+      return true;
+
    default:
       return u_pipe_screen_get_param_defaults(pscreen, param);
    }
@@ -295,8 +366,6 @@ iris_get_shader_param(struct pipe_screen *pscreen,
                       enum pipe_shader_type p_stage,
                       enum pipe_shader_cap param)
 {
-   struct iris_screen *screen = (struct iris_screen *)pscreen;
-   struct brw_compiler *compiler = screen->compiler;
    gl_shader_stage stage = stage_from_pipe(p_stage);
 
    /* this is probably not totally correct.. but it's a start: */
@@ -335,10 +404,12 @@ iris_get_shader_param(struct pipe_screen *pscreen,
    case PIPE_SHADER_CAP_SUBROUTINES:
       return 0;
    case PIPE_SHADER_CAP_INTEGERS:
-   case PIPE_SHADER_CAP_SCALAR_ISA:
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
+   case PIPE_SHADER_CAP_GLSL_16BIT_CONSTS:
       return 0;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
    case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
@@ -352,17 +423,17 @@ iris_get_shader_param(struct pipe_screen *pscreen,
    case PIPE_SHADER_CAP_PREFERRED_IR:
       return PIPE_SHADER_IR_NIR;
    case PIPE_SHADER_CAP_SUPPORTED_IRS:
-      return 1 << PIPE_SHADER_IR_NIR;
-   case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
-      return 32;
+      return (1 << PIPE_SHADER_IR_NIR);
+   case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
+   case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
+      return 1;
    case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
    case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
-   case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
    case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
-   case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
    case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
    case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
    case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
+   case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
       return 0;
    default:
       unreachable("unknown shader param");
@@ -376,11 +447,9 @@ iris_get_compute_param(struct pipe_screen *pscreen,
                        void *ret)
 {
    struct iris_screen *screen = (struct iris_screen *)pscreen;
-   struct brw_compiler *compiler = screen->compiler;
    const struct gen_device_info *devinfo = &screen->devinfo;
 
-   // XXX: cherryview fusing
-
+   /* Limit max_threads to 64 for the GPGPU_WALKER command. */
    const unsigned max_threads = MIN2(64, devinfo->max_cs_threads);
    const uint32_t max_invocations = 32 * max_threads;
 
@@ -391,9 +460,6 @@ iris_get_compute_param(struct pipe_screen *pscreen,
 } while (0)
 
    switch (param) {
-   case PIPE_COMPUTE_CAP_ADDRESS_BITS:
-      RET((uint32_t []){ 32 });
-
    case PIPE_COMPUTE_CAP_IR_TARGET:
       if (ret)
          strcpy(ret, "gen");
@@ -411,25 +477,25 @@ iris_get_compute_param(struct pipe_screen *pscreen,
 
    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
       /* MaxComputeWorkGroupInvocations */
+   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
+      /* MaxComputeVariableGroupInvocations */
       RET((uint64_t []) { max_invocations });
 
    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
       /* MaxComputeSharedMemorySize */
       RET((uint64_t []) { 64 * 1024 });
 
-   case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
-      RET((uint32_t []) { 1 });
-
    case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
       RET((uint32_t []) { BRW_SUBGROUP_SIZE });
 
+   case PIPE_COMPUTE_CAP_ADDRESS_BITS:
+   case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
    case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
    case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
    case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
-   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
       // XXX: I think these are for Clover...
       return 0;
 
@@ -447,20 +513,30 @@ iris_get_timestamp(struct pipe_screen *pscreen)
 
    iris_reg_read(screen->bufmgr, TIMESTAMP | 1, &result);
 
-   result = iris_timebase_scale(&screen->devinfo, result);
+   result = gen_device_info_timebase_scale(&screen->devinfo, result);
    result &= (1ull << TIMESTAMP_BITS) - 1;
 
    return result;
 }
 
-static void
-iris_destroy_screen(struct pipe_screen *pscreen)
+void
+iris_screen_destroy(struct iris_screen *screen)
 {
-   struct iris_screen *screen = (struct iris_screen *) pscreen;
+   glsl_type_singleton_decref();
    iris_bo_unreference(screen->workaround_bo);
+   u_transfer_helper_destroy(screen->base.transfer_helper);
+   iris_bufmgr_unref(screen->bufmgr);
+   disk_cache_destroy(screen->disk_cache);
+   close(screen->winsys_fd);
    ralloc_free(screen);
 }
 
+static void
+iris_screen_unref(struct pipe_screen *pscreen)
+{
+   iris_pscreen_unref(pscreen);
+}
+
 static void
 iris_query_memory_info(struct pipe_screen *pscreen,
                        struct pipe_memory_info *info)
@@ -479,35 +555,46 @@ iris_get_compiler_options(struct pipe_screen *pscreen,
    return screen->compiler->glsl_compiler_options[stage].NirOptions;
 }
 
+static struct disk_cache *
+iris_get_disk_shader_cache(struct pipe_screen *pscreen)
+{
+   struct iris_screen *screen = (struct iris_screen *) pscreen;
+   return screen->disk_cache;
+}
+
 static int
-iris_getparam(struct iris_screen *screen, int param, int *value)
+iris_getparam(int fd, int param, int *value)
 {
    struct drm_i915_getparam gp = { .param = param, .value = value };
 
-   if (ioctl(screen->fd, DRM_IOCTL_I915_GETPARAM, &gp) == -1)
+   if (ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp) == -1)
       return -errno;
 
    return 0;
 }
 
-static bool
-iris_getparam_boolean(struct iris_screen *screen, int param)
-{
-   int value = 0;
-   return (iris_getparam(screen, param, &value) == 0) && value;
-}
-
 static int
-iris_getparam_integer(struct iris_screen *screen, int param)
+iris_getparam_integer(int fd, int param)
 {
    int value = -1;
 
-   if (iris_getparam(screen, param, &value) == 0)
+   if (iris_getparam(fd, param, &value) == 0)
       return value;
 
    return -1;
 }
 
+static const struct gen_l3_config *
+iris_get_default_l3_config(const struct gen_device_info *devinfo,
+                           bool compute)
+{
+   bool wants_dc_cache = true;
+   bool has_slm = compute;
+   const struct gen_l3_weights w =
+      gen_get_default_l3_weights(devinfo, wants_dc_cache, has_slm);
+   return gen_get_l3_config(devinfo, w);
+}
+
 static void
 iris_shader_debug_log(void *data, const char *fmt, ...)
 {
@@ -529,63 +616,150 @@ iris_shader_perf_log(void *data, const char *fmt, ...)
    struct pipe_debug_callback *dbg = data;
    unsigned id = 0;
    va_list args;
+   va_start(args, fmt);
 
-   if (!dbg->debug_message)
-      return;
+   if (unlikely(INTEL_DEBUG & DEBUG_PERF)) {
+      va_list args_copy;
+      va_copy(args_copy, args);
+      vfprintf(stderr, fmt, args_copy);
+      va_end(args_copy);
+   }
+
+   if (dbg->debug_message) {
+      dbg->debug_message(dbg->data, &id, PIPE_DEBUG_TYPE_PERF_INFO, fmt, args);
+   }
 
-   va_start(args, fmt);
-   dbg->debug_message(dbg->data, &id, PIPE_DEBUG_TYPE_PERF_INFO, fmt, args);
    va_end(args);
 }
 
+static void
+iris_detect_kernel_features(struct iris_screen *screen)
+{
+   /* Kernel 5.2+ */
+   if (gen_gem_supports_syncobj_wait(screen->fd))
+      screen->kernel_features |= KERNEL_HAS_WAIT_FOR_SUBMIT;
+}
+
+static bool
+iris_init_identifier_bo(struct iris_screen *screen)
+{
+   void *bo_map;
+
+   bo_map = iris_bo_map(NULL, screen->workaround_bo, MAP_READ | MAP_WRITE);
+   if (!bo_map)
+      return false;
+
+   screen->workaround_bo->kflags |= EXEC_OBJECT_CAPTURE;
+   screen->workaround_address = (struct iris_address) {
+      .bo = screen->workaround_bo,
+      .offset = ALIGN(
+         intel_debug_write_identifiers(bo_map, 4096, "Iris") + 8, 8),
+   };
+
+   iris_bo_unmap(screen->workaround_bo);
+
+   return true;
+}
+
 struct pipe_screen *
-iris_screen_create(int fd)
+iris_screen_create(int fd, const struct pipe_screen_config *config)
 {
+   /* Here are the i915 features we need for Iris (in chronoligical order) :
+    *    - I915_PARAM_HAS_EXEC_NO_RELOC     (3.10)
+    *    - I915_PARAM_HAS_EXEC_HANDLE_LUT   (3.10)
+    *    - I915_PARAM_HAS_EXEC_BATCH_FIRST  (4.13)
+    *    - I915_PARAM_HAS_EXEC_FENCE_ARRAY  (4.14)
+    *    - I915_PARAM_HAS_CONTEXT_ISOLATION (4.16)
+    *
+    * Checking the last feature availability will include all previous ones.
+    */
+   if (iris_getparam_integer(fd, I915_PARAM_HAS_CONTEXT_ISOLATION) <= 0) {
+      debug_error("Kernel is too old for Iris. Consider upgrading to kernel v4.16.\n");
+      return NULL;
+   }
+
    struct iris_screen *screen = rzalloc(NULL, struct iris_screen);
    if (!screen)
       return NULL;
 
-   screen->fd = fd;
-   screen->pci_id = iris_getparam_integer(screen, I915_PARAM_CHIPSET_ID);
+   if (!gen_get_device_info_from_fd(fd, &screen->devinfo))
+      return NULL;
+   screen->pci_id = screen->devinfo.chipset_id;
+   screen->no_hw = screen->devinfo.no_hw;
+
+   p_atomic_set(&screen->refcount, 1);
 
-   if (!gen_get_device_info(screen->pci_id, &screen->devinfo))
+   if (screen->devinfo.gen < 8 || screen->devinfo.is_cherryview)
       return NULL;
 
-   screen->devinfo.timestamp_frequency =
-      iris_getparam_integer(screen, I915_PARAM_CS_TIMESTAMP_FREQUENCY);
+   bool bo_reuse = false;
+   int bo_reuse_mode = driQueryOptioni(config->options, "bo_reuse");
+   switch (bo_reuse_mode) {
+   case DRI_CONF_BO_REUSE_DISABLED:
+      break;
+   case DRI_CONF_BO_REUSE_ALL:
+      bo_reuse = true;
+      break;
+   }
 
-   screen->bufmgr = iris_bufmgr_init(&screen->devinfo, fd);
+   screen->bufmgr = iris_bufmgr_get_for_fd(&screen->devinfo, fd, bo_reuse);
    if (!screen->bufmgr)
       return NULL;
 
+   screen->fd = iris_bufmgr_get_fd(screen->bufmgr);
+   screen->winsys_fd = fd;
+
+   if (getenv("INTEL_NO_HW") != NULL)
+      screen->no_hw = true;
+
    screen->workaround_bo =
       iris_bo_alloc(screen->bufmgr, "workaround", 4096, IRIS_MEMZONE_OTHER);
    if (!screen->workaround_bo)
       return NULL;
 
+   if (!iris_init_identifier_bo(screen))
+      return NULL;
+
    brw_process_intel_debug_variable();
 
-   bool hw_has_swizzling = false; // XXX: detect?
-   isl_device_init(&screen->isl_dev, &screen->devinfo, hw_has_swizzling);
+   screen->driconf.dual_color_blend_by_location =
+      driQueryOptionb(config->options, "dual_color_blend_by_location");
+   screen->driconf.disable_throttling =
+      driQueryOptionb(config->options, "disable_throttling");
+   screen->driconf.always_flush_cache =
+      driQueryOptionb(config->options, "always_flush_cache");
+
+   screen->precompile = env_var_as_boolean("shader_precompile", true);
+
+   isl_device_init(&screen->isl_dev, &screen->devinfo, false);
 
    screen->compiler = brw_compiler_create(screen, &screen->devinfo);
    screen->compiler->shader_debug_log = iris_shader_debug_log;
    screen->compiler->shader_perf_log = iris_shader_perf_log;
    screen->compiler->supports_pull_constants = false;
+   screen->compiler->supports_shader_constants = true;
+   screen->compiler->compact_params = false;
+
+   screen->l3_config_3d = iris_get_default_l3_config(&screen->devinfo, false);
+   screen->l3_config_cs = iris_get_default_l3_config(&screen->devinfo, true);
+
+   iris_disk_cache_init(screen);
 
    slab_create_parent(&screen->transfer_pool,
                       sizeof(struct iris_transfer), 64);
 
    screen->subslice_total =
-      iris_getparam_integer(screen, I915_PARAM_SUBSLICE_TOTAL);
+      iris_getparam_integer(screen->fd, I915_PARAM_SUBSLICE_TOTAL);
    assert(screen->subslice_total >= 1);
 
+   iris_detect_kernel_features(screen);
+
    struct pipe_screen *pscreen = &screen->base;
 
    iris_init_screen_fence_functions(pscreen);
    iris_init_screen_resource_functions(pscreen);
 
-   pscreen->destroy = iris_destroy_screen;
+   pscreen->destroy = iris_screen_unref;
    pscreen->get_name = iris_get_name;
    pscreen->get_vendor = iris_get_vendor;
    pscreen->get_device_vendor = iris_get_device_vendor;
@@ -594,11 +768,16 @@ iris_screen_create(int fd)
    pscreen->get_compute_param = iris_get_compute_param;
    pscreen->get_paramf = iris_get_paramf;
    pscreen->get_compiler_options = iris_get_compiler_options;
+   pscreen->get_disk_shader_cache = iris_get_disk_shader_cache;
    pscreen->is_format_supported = iris_is_format_supported;
    pscreen->context_create = iris_create_context;
    pscreen->flush_frontbuffer = iris_flush_frontbuffer;
    pscreen->get_timestamp = iris_get_timestamp;
    pscreen->query_memory_info = iris_query_memory_info;
+   pscreen->get_driver_query_group_info = iris_get_monitor_group_info;
+   pscreen->get_driver_query_info = iris_get_monitor_info;
+
+   glsl_type_singleton_init_or_ref();
 
    return pscreen;
 }