}
-
+#define EMIT(_name, _op) \
+void _name (struct spe_function *p) \
+{ \
+ emit_RR(p, _op, 0, 0, 0, __FUNCTION__); \
+}
#define EMIT_(_name, _op) \
void _name (struct spe_function *p, unsigned rT) \
#if 0
stop;
EMIT_RR (spe_stopd, 0x140);
-EMIT_ (spe_lnop, 0x001);
EMIT_ (spe_nop, 0x201);
sync;
EMIT_ (spe_dsync, 0x003);
#endif /* RTASM_PPC_SPE_H */
-#ifndef EMIT_
+#ifndef EMIT
+#define EMIT(_name, _op) \
+ extern void _name (struct spe_function *p);
#define EMIT_(_name, _op) \
extern void _name (struct spe_function *p, unsigned rT);
#define EMIT_R(_name, _op) \
#define EMIT_I16(_name, _op) \
extern void _name (struct spe_function *p, int imm);
#define UNDEF_EMIT_MACROS
-#endif /* EMIT_ */
+#endif /* EMIT */
/* Memory load / store instructions
EMIT_RI16(spe_brhnz, 0x046)
EMIT_RI16(spe_brhz, 0x044)
+/* Control instructions
+ */
+EMIT (spe_lnop, 0x001)
+
extern void
spe_lqd(struct spe_function *p, unsigned rT, unsigned rA, int offset);
#ifdef UNDEF_EMIT_MACROS
+#undef EMIT
#undef EMIT_
#undef EMIT_R
#undef EMIT_RR
#define CALLOC_STRUCT(T) (struct T *) CALLOC(1, sizeof(struct T))
+#define CALLOC_VARIANT_LENGTH_STRUCT(T,more_size) ((struct T *) CALLOC(1, sizeof(struct T) + more_size))
+
/**
* Return memory on given byte alignment
#define CELL_DEBUG_CMD (1 << 5)
#define CELL_DEBUG_CACHE (1 << 6)
-/** Max instructions for doing per-fragment operations */
-#define SPU_MAX_FRAGMENT_OPS_INSTS 128
-
-
-
#define CELL_FENCE_IDLE 0
#define CELL_FENCE_EMITTED 1
#define CELL_FENCE_SIGNALLED 2
/**
* Command to specify per-fragment operations state and generated code.
- * Note that the dsa, blend, blend_color fields are really only needed
+ * Note that this is a variant-length structure, allocated with as
+ * much memory as needed to hold the generated code; the "code"
+ * field *must* be the last field in the structure. Also, the entire
+ * length of the structure (including the variant code field) must be
+ * a multiple of 8 bytes; we require that this structure itself be
+ * a multiple of 8 bytes, and that the generated code also be a multiple
+ * of 8 bytes.
+ *
+ * Also note that the dsa, blend, blend_color fields are really only needed
* for the fallback/C per-pixel code. They're not used when we generate
- * dynamic SPU fragment code (which is the normal case).
+ * dynamic SPU fragment code (which is the normal case), and will eventually
+ * be removed from this structure.
*/
struct cell_command_fragment_ops
{
uint64_t opcode; /**< CELL_CMD_STATE_FRAGMENT_OPS */
+
+ /* Fields for the fallback case */
struct pipe_depth_stencil_alpha_state dsa;
struct pipe_blend_state blend;
struct pipe_blend_color blend_color;
- unsigned code_front[SPU_MAX_FRAGMENT_OPS_INSTS];
- unsigned code_back[SPU_MAX_FRAGMENT_OPS_INSTS];
+
+ /* Fields for the generated SPU code */
+ unsigned total_code_size;
+ unsigned front_code_index;
+ unsigned back_code_index;
+ /* this field has variant length, and must be the last field in
+ * the structure
+ */
+ unsigned code[0];
};
* \param cell the rendering context (in)
* \param facing whether the generated code is for front-facing or
* back-facing fragments
- * \param f the generated function (out)
+ * \param f the generated function (in/out); on input, the function
+ * must already have been initialized. On exit, whatever
+ * instructions within the generated function have had
+ * the fragment ops appended.
*/
void
cell_gen_fragment_function(struct cell_context *cell, const uint facing, struct spe_function *f)
int fbRGBA_reg; /**< framebuffer's RGBA colors for quad */
int fbZS_reg; /**< framebuffer's combined z/stencil values for quad */
- spe_init_func(f, SPU_MAX_FRAGMENT_OPS_INSTS * SPE_INST_SIZE);
-
if (cell->debug_flags & CELL_DEBUG_ASM) {
spe_print_code(f, true);
spe_indent(f, 8);
*/
if (!ops) {
struct spe_function spe_code_front, spe_code_back;
+ unsigned int facing_dependent, total_code_size;
if (0)
debug_printf("**** Create New Fragment Ops\n");
- /* Prepare the buffer that will hold the generated code. */
- spe_init_func(&spe_code_front, SPU_MAX_FRAGMENT_OPS_INSTS * SPE_INST_SIZE);
- spe_init_func(&spe_code_back, SPU_MAX_FRAGMENT_OPS_INSTS * SPE_INST_SIZE);
+ /* Prepare the buffer that will hold the generated code. The
+ * "0" passed in for the size means that the SPE code will
+ * use a default size.
+ */
+ spe_init_func(&spe_code_front, 0);
+ spe_init_func(&spe_code_back, 0);
- /* generate new code. Always generate new code for both front-facing
+ /* Generate new code. Always generate new code for both front-facing
* and back-facing fragments, even if it's the same code in both
* cases.
*/
cell_gen_fragment_function(cell, CELL_FACING_FRONT, &spe_code_front);
cell_gen_fragment_function(cell, CELL_FACING_BACK, &spe_code_back);
- /* alloc new fragment ops command */
- ops = CALLOC_STRUCT(cell_command_fragment_ops);
+ /* Make sure the code is a multiple of 8 bytes long; this is
+ * required to ensure that the dual pipe instruction alignment
+ * is correct. It's also important for the SPU unpacking,
+ * which assumes 8-byte boundaries.
+ */
+ unsigned int front_code_size = spe_code_size(&spe_code_front);
+ while (front_code_size % 8 != 0) {
+ spe_lnop(&spe_code_front);
+ front_code_size = spe_code_size(&spe_code_front);
+ }
+ unsigned int back_code_size = spe_code_size(&spe_code_back);
+ while (back_code_size % 8 != 0) {
+ spe_lnop(&spe_code_back);
+ back_code_size = spe_code_size(&spe_code_back);
+ }
+ /* Determine whether the code we generated is facing-dependent, by
+ * determining whether the generated code is different for the front-
+ * and back-facing fragments.
+ */
+ if (front_code_size == back_code_size && memcmp(spe_code_front.store, spe_code_back.store, front_code_size) == 0) {
+ /* Code is identical; only need one copy. */
+ facing_dependent = 0;
+ total_code_size = front_code_size;
+ }
+ else {
+ /* Code is different for front-facing and back-facing fragments.
+ * Need to send both copies.
+ */
+ facing_dependent = 1;
+ total_code_size = front_code_size + back_code_size;
+ }
+
+ /* alloc new fragment ops command. Note that this structure
+ * has variant length based on the total code size required.
+ */
+ ops = CALLOC_VARIANT_LENGTH_STRUCT(cell_command_fragment_ops, total_code_size);
/* populate the new cell_command_fragment_ops object */
ops->opcode = CELL_CMD_STATE_FRAGMENT_OPS;
- memcpy(ops->code_front, spe_code_front.store, spe_code_size(&spe_code_front));
- memcpy(ops->code_back, spe_code_back.store, spe_code_size(&spe_code_back));
+ ops->total_code_size = total_code_size;
+ ops->front_code_index = 0;
+ memcpy(ops->code, spe_code_front.store, front_code_size);
+ if (facing_dependent) {
+ /* We have separate front- and back-facing code. Append the
+ * back-facing code to the buffer. Be careful because the code
+ * size is in bytes, but the buffer is of unsigned elements.
+ */
+ ops->back_code_index = front_code_size / sizeof(spe_code_front.store[0]);
+ memcpy(ops->code + ops->back_code_index, spe_code_back.store, back_code_size);
+ }
+ else {
+ /* Use the same code for front- and back-facing fragments */
+ ops->back_code_index = ops->front_code_index;
+ }
+
+ /* Set the fields for the fallback case. Note that these fields
+ * (and the whole fallback case) will eventually go away.
+ */
ops->dsa = *cell->depth_stencil;
ops->blend = *cell->blend;
+ ops->blend_color = cell->blend_color;
/* insert cell_command_fragment_ops object into keymap/cache */
util_keymap_insert(cell->fragment_ops_cache, &key, ops, NULL);
CELL_NEW_DEPTH_STENCIL |
CELL_NEW_BLEND)) {
struct cell_command_fragment_ops *fops, *fops_cmd;
- fops_cmd = cell_batch_alloc(cell, sizeof(*fops_cmd));
+ /* Note that cell_command_fragment_ops is a variant-sized record */
fops = lookup_fragment_ops(cell);
- memcpy(fops_cmd, fops, sizeof(*fops));
+ fops_cmd = cell_batch_alloc(cell, sizeof(*fops_cmd) + fops->total_code_size);
+ memcpy(fops_cmd, fops, sizeof(*fops) + fops->total_code_size);
}
if (cell->dirty & CELL_NEW_SAMPLER) {
}
+#if 0
+/* This appears to not be used currently */
static void
emit_fetch(struct spe_function *p,
unsigned in_ptr, unsigned *offset,
spe_release_register(p, float_one);
}
}
+#endif
void cell_update_vertex_fetch(struct draw_context *draw)
static void
cmd_state_fragment_ops(const struct cell_command_fragment_ops *fops)
{
- static int warned = 0;
-
D_PRINTF(CELL_DEBUG_CMD, "CMD_STATE_FRAGMENT_OPS\n");
- /* Copy SPU code from batch buffer to spu buffer */
- memcpy(spu.fragment_ops_code_front, fops->code_front, SPU_MAX_FRAGMENT_OPS_INSTS * 4);
- memcpy(spu.fragment_ops_code_back, fops->code_back, SPU_MAX_FRAGMENT_OPS_INSTS * 4);
- /* Copy state info (for fallback case only) */
+
+ /* Copy state info (for fallback case only - this will eventually
+ * go away when the fallback case goes away)
+ */
memcpy(&spu.depth_stencil_alpha, &fops->dsa, sizeof(fops->dsa));
memcpy(&spu.blend, &fops->blend, sizeof(fops->blend));
memcpy(&spu.blend_color, &fops->blend_color, sizeof(fops->blend_color));
- /* Parity twist! For now, always use the fallback code by default,
- * only switching to codegen when specifically requested. This
- * allows us to develop freely without risking taking down the
- * branch.
- *
- * Later, the parity of this check will be reversed, so that
- * codegen is *always* used, unless we specifically indicate that
- * we don't want it.
- *
- * Eventually, the option will be removed completely, because in
- * final code we'll always use codegen and won't even provide the
- * raw state records that the fallback code requires.
+ /* Make sure the SPU knows which buffers it's expected to read when
+ * it's told to pull tiles.
*/
- if ((spu.init.debug_flags & CELL_DEBUG_FRAGMENT_OP_FALLBACK) == 0) {
- spu.fragment_ops[CELL_FACING_FRONT] = (spu_fragment_ops_func) spu.fragment_ops_code_front;
- spu.fragment_ops[CELL_FACING_BACK] = (spu_fragment_ops_func) spu.fragment_ops_code_back;
- }
- else {
- /* otherwise, the default fallback code remains in place */
+ spu.read_depth_stencil = (spu.depth_stencil_alpha.depth.enabled || spu.depth_stencil_alpha.stencil[0].enabled);
+
+ /* If we're forcing the fallback code to be used (for debug purposes),
+ * install that. Otherwise install the incoming SPU code.
+ */
+ if ((spu.init.debug_flags & CELL_DEBUG_FRAGMENT_OP_FALLBACK) != 0) {
+ static unsigned int warned = 0;
if (!warned) {
fprintf(stderr, "Cell Warning: using fallback per-fragment code\n");
warned = 1;
}
+ /* The following two lines aren't really necessary if you
+ * know the debug flags won't change during a run, and if you
+ * know that the function pointers are initialized correctly.
+ * We set them here to allow a person to change the debug
+ * flags during a run (from inside a debugger).
+ */
+ spu.fragment_ops[CELL_FACING_FRONT] = spu_fallback_fragment_ops;
+ spu.fragment_ops[CELL_FACING_BACK] = spu_fallback_fragment_ops;
+ return;
}
- spu.read_depth_stencil = (spu.depth_stencil_alpha.depth.enabled || spu.depth_stencil_alpha.stencil[0].enabled);
-}
+ /* Make sure the SPU code buffer is large enough to hold the incoming code.
+ * Note that we *don't* use align_malloc() and align_free(), because
+ * those utility functions are *not* available in SPU code.
+ * */
+ if (spu.fragment_ops_code_size < fops->total_code_size) {
+ if (spu.fragment_ops_code != NULL) {
+ free(spu.fragment_ops_code);
+ }
+ spu.fragment_ops_code_size = fops->total_code_size;
+ spu.fragment_ops_code = malloc(fops->total_code_size);
+ if (spu.fragment_ops_code == NULL) {
+ /* Whoops. */
+ fprintf(stderr, "CELL Warning: failed to allocate fragment ops code (%d bytes) - using fallback\n", fops->total_code_size);
+ spu.fragment_ops_code = NULL;
+ spu.fragment_ops_code_size = 0;
+ spu.fragment_ops[CELL_FACING_FRONT] = spu_fallback_fragment_ops;
+ spu.fragment_ops[CELL_FACING_BACK] = spu_fallback_fragment_ops;
+ return;
+ }
+ }
+ /* Copy the SPU code from the command buffer to the spu buffer */
+ memcpy(spu.fragment_ops_code, fops->code, fops->total_code_size);
+
+ /* Set the pointers for the front-facing and back-facing fragments
+ * to the specified offsets within the code. Note that if the
+ * front-facing and back-facing code are the same, they'll have
+ * the same offset.
+ */
+ spu.fragment_ops[CELL_FACING_FRONT] = (spu_fragment_ops_func) &spu.fragment_ops_code[fops->front_code_index];
+ spu.fragment_ops[CELL_FACING_BACK] = (spu_fragment_ops_func) &spu.fragment_ops_code[fops->back_code_index];
+}
static void
cmd_state_fragment_program(const struct cell_command_fragment_program *fp)
struct cell_command_fragment_ops *fops
= (struct cell_command_fragment_ops *) &buffer[pos];
cmd_state_fragment_ops(fops);
- pos += sizeof(*fops) / 8;
+ /* This is a variant-sized command */
+ pos += (sizeof(*fops) + fops->total_code_size)/ 8;
}
break;
case CELL_CMD_STATE_FRAGMENT_PROGRAM:
if (spu.init.debug_flags & CELL_DEBUG_CACHE)
spu_dcache_report();
}
+
+/* Initialize this module; we manage the fragment ops buffer here. */
+void
+spu_command_init(void)
+{
+ /* Install default/fallback fragment processing function.
+ * This will normally be overriden by a code-gen'd function
+ * unless CELL_FORCE_FRAGMENT_OPS_FALLBACK is set.
+ */
+ spu.fragment_ops[CELL_FACING_FRONT] = spu_fallback_fragment_ops;
+ spu.fragment_ops[CELL_FACING_BACK] = spu_fallback_fragment_ops;
+
+ /* Set up the basic empty buffer for code-gen'ed fragment ops */
+ spu.fragment_ops_code = NULL;
+ spu.fragment_ops_code_size = 0;
+}
+
+void
+spu_command_close(void)
+{
+ /* Deallocate the code-gen buffer for fragment ops, and reset the
+ * fragment ops functions to their initial setting (just to leave
+ * things in a good state).
+ */
+ if (spu.fragment_ops_code != NULL) {
+ free(spu.fragment_ops_code);
+ }
+ spu_command_init();
+}
-
-
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
extern void
command_loop(void);
+extern void
+spu_command_init(void);
+extern void
+spu_command_close(void);
memset(spu.ctile_status, TILE_STATUS_DEFINED, sizeof(spu.ctile_status));
memset(spu.ztile_status, TILE_STATUS_DEFINED, sizeof(spu.ztile_status));
invalidate_tex_cache();
-
- /* Install default/fallback fragment processing function.
- * This will normally be overriden by a code-gen'd function
- * unless CELL_FORCE_FRAGMENT_OPS_FALLBACK is set.
- */
- spu.fragment_ops[CELL_FACING_FRONT] = spu_fallback_fragment_ops;
- spu.fragment_ops[CELL_FACING_BACK] = spu_fallback_fragment_ops;
}
-
-
/* In some versions of the SDK the SPE main takes 'unsigned long' as a
* parameter. In others it takes 'unsigned long long'. Use a define to
* select between the two.
ASSERT(sizeof(tile_t) == TILE_SIZE * TILE_SIZE * 4);
ASSERT(sizeof(struct cell_command_render) % 8 == 0);
- ASSERT(((unsigned long) &spu.fragment_ops_code_front) % 8 == 0);
- ASSERT(((unsigned long) &spu.fragment_ops_code_back) % 8 == 0);
+ ASSERT(sizeof(struct cell_command_fragment_ops) % 8 == 0);
ASSERT(((unsigned long) &spu.fragment_program_code) % 8 == 0);
one_time_init();
+ spu_command_init();
D_PRINTF(CELL_DEBUG_CMD, "main() speid=%lu\n", (unsigned long) speid);
D_PRINTF(CELL_DEBUG_FRAGMENT_OP_FALLBACK, "using fragment op fallback\n");
command_loop();
+ spu_command_close();
+
return 0;
}
ubyte ztile_status[CELL_MAX_HEIGHT/TILE_SIZE][CELL_MAX_WIDTH/TILE_SIZE] ALIGN16_ATTRIB;
/** Current fragment ops machine code, at 8-byte boundary */
- uint fragment_ops_code_front[SPU_MAX_FRAGMENT_OPS_INSTS] ALIGN8_ATTRIB;
- uint fragment_ops_code_back[SPU_MAX_FRAGMENT_OPS_INSTS] ALIGN8_ATTRIB;
+ uint *fragment_ops_code;
+ uint fragment_ops_code_size;
/** Current fragment ops functions, 0 = frontfacing, 1 = backfacing */
spu_fragment_ops_func fragment_ops[2];
projects / mesa.git / commitdiff