src/gallium/drivers/vc4/vc4_cl.h - platform/external/mesa3d - Git at Google

 /*
  * Copyright © 2014 Broadcom
  *
  * 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.
  */

 #ifndef VC4_CL_H
 #define VC4_CL_H

 #include <stdint.h>

 #include "util/u_math.h"
 #include "util/macros.h"

 struct vc4_bo;
 struct vc4_job;
 struct vc4_cl;

 /**
  * Undefined structure, used for typechecking that you're passing the pointers
  * to these functions correctly.
  */
 struct vc4_cl_out;

 /** A reference to a BO used in the CL packing functions */
 struct vc4_cl_reloc {
         struct vc4_bo *bo;
         uint32_t offset;
 };

 static inline void cl_pack_emit_reloc(struct vc4_cl *cl, const struct vc4_cl_reloc *);

 #define __gen_user_data struct vc4_cl
 #define __gen_address_type struct vc4_cl_reloc
 #define __gen_address_offset(reloc) ((reloc)->offset)
 #define __gen_emit_reloc cl_pack_emit_reloc

 #include "kernel/vc4_packet.h"
 #include "broadcom/cle/v3d_packet_v21_pack.h"

 struct vc4_cl {
         void *base;
         struct vc4_job *job;
         struct vc4_cl_out *next;
         struct vc4_cl_out *reloc_next;
         uint32_t size;
 #ifndef NDEBUG
         uint32_t reloc_count;
 #endif
 };

 void vc4_init_cl(struct vc4_job *job, struct vc4_cl *cl);
 void vc4_reset_cl(struct vc4_cl *cl);
 uint32_t vc4_gem_hindex(struct vc4_job *job, struct vc4_bo *bo);

 struct PACKED unaligned_16 { uint16_t x; };
 struct PACKED unaligned_32 { uint32_t x; };

 static inline uint32_t cl_offset(struct vc4_cl *cl)
 {
         return (char *)cl->next - (char *)cl->base;
 }

 static inline void
 cl_advance(struct vc4_cl_out **cl, uint32_t n)
 {
         (*cl) = (struct vc4_cl_out *)((char *)(*cl) + n);
 }

 static inline struct vc4_cl_out *
 cl_start(struct vc4_cl *cl)
 {
         return cl->next;
 }

 static inline void
 cl_end(struct vc4_cl *cl, struct vc4_cl_out *next)
 {
         cl->next = next;
         assert(cl_offset(cl) <= cl->size);
 }


 static inline void
 put_unaligned_32(struct vc4_cl_out *ptr, uint32_t val)
 {
         struct unaligned_32 *p = (void *)ptr;
         p->x = val;
 }

 static inline void
 put_unaligned_16(struct vc4_cl_out *ptr, uint16_t val)
 {
         struct unaligned_16 *p = (void *)ptr;
         p->x = val;
 }

 static inline void
 cl_u8(struct vc4_cl_out **cl, uint8_t n)
 {
         *(uint8_t *)(*cl) = n;
         cl_advance(cl, 1);
 }

 static inline void
 cl_u16(struct vc4_cl_out **cl, uint16_t n)
 {
         put_unaligned_16(*cl, n);
         cl_advance(cl, 2);
 }

 static inline void
 cl_u32(struct vc4_cl_out **cl, uint32_t n)
 {
         put_unaligned_32(*cl, n);
         cl_advance(cl, 4);
 }

 static inline void
 cl_aligned_u32(struct vc4_cl_out **cl, uint32_t n)
 {
         *(uint32_t *)(*cl) = n;
         cl_advance(cl, 4);
 }

 static inline void
 cl_ptr(struct vc4_cl_out **cl, void *ptr)
 {
         *(struct vc4_cl_out **)(*cl) = ptr;
         cl_advance(cl, sizeof(void *));
 }

 static inline void
 cl_f(struct vc4_cl_out **cl, float f)
 {
         cl_u32(cl, fui(f));
 }

 static inline void
 cl_aligned_f(struct vc4_cl_out **cl, float f)
 {
         cl_aligned_u32(cl, fui(f));
 }

 static inline struct vc4_cl_out *
 cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
 {
         assert(cl->reloc_count == 0);
 #ifndef NDEBUG
         cl->reloc_count = n;
 #endif
         cl->reloc_next = cl->next;

         /* Reserve the space where hindex will be written. */
         cl_advance(&cl->next, n * 4);

         return cl->next;
 }

 static inline void
 cl_reloc(struct vc4_job *job, struct vc4_cl *cl, struct vc4_cl_out **cl_out,
          struct vc4_bo *bo, uint32_t offset)
 {
         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
         cl_advance(&cl->reloc_next, 4);

 #ifndef NDEBUG
         cl->reloc_count--;
 #endif

         cl_u32(cl_out, offset);
 }

 static inline void
 cl_aligned_reloc(struct vc4_job *job, struct vc4_cl *cl,
                  struct vc4_cl_out **cl_out,
                  struct vc4_bo *bo, uint32_t offset)
 {
         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
         cl_advance(&cl->reloc_next, 4);

 #ifndef NDEBUG
         cl->reloc_count--;
 #endif

         cl_aligned_u32(cl_out, offset);
 }

 /**
  * Reference to a BO with its associated offset, used in the pack process.
  */
 static inline struct vc4_cl_reloc
 cl_address(struct vc4_bo *bo, uint32_t offset)
 {
         struct vc4_cl_reloc reloc = {
                 .bo = bo,
                 .offset = offset,
         };
         return reloc;
 }

 void cl_ensure_space(struct vc4_cl *cl, uint32_t size);

 #define cl_packet_header(packet) V3D21_ ## packet ## _header
 #define cl_packet_length(packet) V3D21_ ## packet ## _length
 #define cl_packet_pack(packet)   V3D21_ ## packet ## _pack
 #define cl_packet_struct(packet)   V3D21_ ## packet

 static inline void *
 cl_get_emit_space(struct vc4_cl_out **cl, size_t size)
 {
         void *addr = *cl;
         cl_advance(cl, size);
         return addr;
 }

 /* Macro for setting up an emit of a CL struct.  A temporary unpacked struct
  * is created, which you get to set fields in of the form:
  *
  * cl_emit(bcl, FLAT_SHADE_FLAGS, flags) {
  *     .flags.flat_shade_flags = 1 << 2,
  * }
  *
  * or default values only can be emitted with just:
  *
  * cl_emit(bcl, FLAT_SHADE_FLAGS, flags);
  *
  * The trick here is that we make a for loop that will execute the body
  * (either the block or the ';' after the macro invocation) exactly once.
  * Also, *dst is actually of the wrong type, it's the
  * uint8_t[cl_packet_length()] in the CL, not a cl_packet_struct(packet).
  */
 #define cl_emit(cl, packet, name)                                \
         for (struct cl_packet_struct(packet) name = {            \
                 cl_packet_header(packet)                         \
         },                                                       \
         *_loop_terminate = &name;                                \
         __builtin_expect(_loop_terminate != NULL, 1);            \
         ({                                                       \
                 struct vc4_cl_out *cl_out = cl_start(cl);        \
                 cl_packet_pack(packet)(cl, (uint8_t *)cl_out, &name); \
                 VG(VALGRIND_CHECK_MEM_IS_DEFINED(cl_out,         \
                                                  cl_packet_length(packet))); \
                 cl_advance(&cl_out, cl_packet_length(packet));   \
                 cl_end(cl, cl_out);                              \
                 _loop_terminate = NULL;                          \
         }))                                                      \

 #define cl_emit_prepacked(cl, packet) do {                       \
         memcpy((cl)->next, packet, sizeof(*packet));             \
         cl_advance(&(cl)->next, sizeof(*packet));                \
 } while (0)

 /**
  * Helper function called by the XML-generated pack functions for filling in
  * an address field in shader records.
  *
  * Relocations for shader recs and texturing involve the packet (or uniforms
  * stream) being preceded by the handles to the BOs, and the offset within the
  * BO being in the stream (the output of this function).
  */
 static inline void
 cl_pack_emit_reloc(struct vc4_cl *cl, const struct vc4_cl_reloc *reloc)
 {
         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(cl->job, reloc->bo);
         cl_advance(&cl->reloc_next, 4);

 #ifndef NDEBUG
         cl->reloc_count--;
 #endif
 }

 #endif /* VC4_CL_H */
	/*
	* Copyright © 2014 Broadcom
	*
	* 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.
	*/

	#ifndef VC4_CL_H
	#define VC4_CL_H

	#include <stdint.h>

	#include "util/u_math.h"
	#include "util/macros.h"

	struct vc4_bo;
	struct vc4_job;
	struct vc4_cl;

	/**
	* Undefined structure, used for typechecking that you're passing the pointers
	* to these functions correctly.
	*/
	struct vc4_cl_out;

	/** A reference to a BO used in the CL packing functions */
	struct vc4_cl_reloc {
	struct vc4_bo *bo;
	uint32_t offset;
	};

	static inline void cl_pack_emit_reloc(struct vc4_cl cl, const struct vc4_cl_reloc );

	#define __gen_user_data struct vc4_cl
	#define __gen_address_type struct vc4_cl_reloc
	#define __gen_address_offset(reloc) ((reloc)->offset)
	#define __gen_emit_reloc cl_pack_emit_reloc

	#include "kernel/vc4_packet.h"
	#include "broadcom/cle/v3d_packet_v21_pack.h"

	struct vc4_cl {
	void *base;
	struct vc4_job *job;
	struct vc4_cl_out *next;
	struct vc4_cl_out *reloc_next;
	uint32_t size;
	#ifndef NDEBUG
	uint32_t reloc_count;
	#endif
	};

	void vc4_init_cl(struct vc4_job job, struct vc4_cl cl);
	void vc4_reset_cl(struct vc4_cl *cl);
	uint32_t vc4_gem_hindex(struct vc4_job job, struct vc4_bo bo);

	struct PACKED unaligned_16 { uint16_t x; };
	struct PACKED unaligned_32 { uint32_t x; };

	static inline uint32_t cl_offset(struct vc4_cl *cl)
	{
	return (char )cl->next - (char )cl->base;
	}

	static inline void
	cl_advance(struct vc4_cl_out **cl, uint32_t n)
	{
	(cl) = (struct vc4_cl_out )((char )(cl) + n);
	}

	static inline struct vc4_cl_out *
	cl_start(struct vc4_cl *cl)
	{
	return cl->next;
	}

	static inline void
	cl_end(struct vc4_cl cl, struct vc4_cl_out next)
	{
	cl->next = next;
	assert(cl_offset(cl) <= cl->size);
	}


	static inline void
	put_unaligned_32(struct vc4_cl_out *ptr, uint32_t val)
	{
	struct unaligned_32 p = (void )ptr;
	p->x = val;
	}

	static inline void
	put_unaligned_16(struct vc4_cl_out *ptr, uint16_t val)
	{
	struct unaligned_16 p = (void )ptr;
	p->x = val;
	}

	static inline void
	cl_u8(struct vc4_cl_out **cl, uint8_t n)
	{
	(uint8_t )(*cl) = n;
	cl_advance(cl, 1);
	}

	static inline void
	cl_u16(struct vc4_cl_out **cl, uint16_t n)
	{
	put_unaligned_16(*cl, n);
	cl_advance(cl, 2);
	}

	static inline void
	cl_u32(struct vc4_cl_out **cl, uint32_t n)
	{
	put_unaligned_32(*cl, n);
	cl_advance(cl, 4);
	}

	static inline void
	cl_aligned_u32(struct vc4_cl_out **cl, uint32_t n)
	{
	(uint32_t )(*cl) = n;
	cl_advance(cl, 4);
	}

	static inline void
	cl_ptr(struct vc4_cl_out *cl, void ptr)
	{
	(struct vc4_cl_out )(cl) = ptr;
	cl_advance(cl, sizeof(void *));
	}

	static inline void
	cl_f(struct vc4_cl_out **cl, float f)
	{
	cl_u32(cl, fui(f));
	}

	static inline void
	cl_aligned_f(struct vc4_cl_out **cl, float f)
	{
	cl_aligned_u32(cl, fui(f));
	}

	static inline struct vc4_cl_out *
	cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
	{
	assert(cl->reloc_count == 0);
	#ifndef NDEBUG
	cl->reloc_count = n;
	#endif
	cl->reloc_next = cl->next;

	/* Reserve the space where hindex will be written. */
	cl_advance(&cl->next, n * 4);

	return cl->next;
	}

	static inline void
	cl_reloc(struct vc4_job job, struct vc4_cl cl, struct vc4_cl_out **cl_out,
	struct vc4_bo *bo, uint32_t offset)
	{
	(uint32_t )cl->reloc_next = vc4_gem_hindex(job, bo);
	cl_advance(&cl->reloc_next, 4);

	#ifndef NDEBUG
	cl->reloc_count--;
	#endif

	cl_u32(cl_out, offset);
	}

	static inline void
	cl_aligned_reloc(struct vc4_job job, struct vc4_cl cl,
	struct vc4_cl_out **cl_out,
	struct vc4_bo *bo, uint32_t offset)
	{
	(uint32_t )cl->reloc_next = vc4_gem_hindex(job, bo);
	cl_advance(&cl->reloc_next, 4);

	#ifndef NDEBUG
	cl->reloc_count--;
	#endif

	cl_aligned_u32(cl_out, offset);
	}

	/**
	* Reference to a BO with its associated offset, used in the pack process.
	*/
	static inline struct vc4_cl_reloc
	cl_address(struct vc4_bo *bo, uint32_t offset)
	{
	struct vc4_cl_reloc reloc = {
	.bo = bo,
	.offset = offset,
	};
	return reloc;
	}

	void cl_ensure_space(struct vc4_cl *cl, uint32_t size);

	#define cl_packet_header(packet) V3D21_ ## packet ## _header
	#define cl_packet_length(packet) V3D21_ ## packet ## _length
	#define cl_packet_pack(packet) V3D21_ ## packet ## _pack
	#define cl_packet_struct(packet) V3D21_ ## packet

	static inline void *
	cl_get_emit_space(struct vc4_cl_out **cl, size_t size)
	{
	void addr = cl;
	cl_advance(cl, size);
	return addr;
	}

	/* Macro for setting up an emit of a CL struct. A temporary unpacked struct
	* is created, which you get to set fields in of the form:
	*
	* cl_emit(bcl, FLAT_SHADE_FLAGS, flags) {
	* .flags.flat_shade_flags = 1 << 2,
	* }
	*
	* or default values only can be emitted with just:
	*
	* cl_emit(bcl, FLAT_SHADE_FLAGS, flags);
	*
	* The trick here is that we make a for loop that will execute the body
	* (either the block or the ';' after the macro invocation) exactly once.
	* Also, *dst is actually of the wrong type, it's the
	* uint8_t[cl_packet_length()] in the CL, not a cl_packet_struct(packet).
	*/
	#define cl_emit(cl, packet, name) \
	for (struct cl_packet_struct(packet) name = { \
	cl_packet_header(packet) \
	}, \
	*_loop_terminate = &name; \
	__builtin_expect(_loop_terminate != NULL, 1); \
	({ \
	struct vc4_cl_out *cl_out = cl_start(cl); \
	cl_packet_pack(packet)(cl, (uint8_t *)cl_out, &name); \
	VG(VALGRIND_CHECK_MEM_IS_DEFINED(cl_out, \
	cl_packet_length(packet))); \
	cl_advance(&cl_out, cl_packet_length(packet)); \
	cl_end(cl, cl_out); \
	_loop_terminate = NULL; \
	})) \

	#define cl_emit_prepacked(cl, packet) do { \
	memcpy((cl)->next, packet, sizeof(*packet)); \
	cl_advance(&(cl)->next, sizeof(*packet)); \
	} while (0)

	/**
	* Helper function called by the XML-generated pack functions for filling in
	* an address field in shader records.
	*
	* Relocations for shader recs and texturing involve the packet (or uniforms
	* stream) being preceded by the handles to the BOs, and the offset within the
	* BO being in the stream (the output of this function).
	*/
	static inline void
	cl_pack_emit_reloc(struct vc4_cl cl, const struct vc4_cl_reloc reloc)
	{
	(uint32_t )cl->reloc_next = vc4_gem_hindex(cl->job, reloc->bo);
	cl_advance(&cl->reloc_next, 4);

	#ifndef NDEBUG
	cl->reloc_count--;
	#endif
	}

	#endif /* VC4_CL_H */