/*
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* Copyright © 2014 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef VC4_CL_H
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#define VC4_CL_H
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#include <stdint.h>
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#include "util/u_math.h"
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#include "util/macros.h"
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struct vc4_bo;
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struct vc4_job;
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struct vc4_cl;
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/**
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* Undefined structure, used for typechecking that you're passing the pointers
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* to these functions correctly.
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*/
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struct vc4_cl_out;
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/** A reference to a BO used in the CL packing functions */
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struct vc4_cl_reloc {
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struct vc4_bo *bo;
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uint32_t offset;
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};
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static inline void cl_pack_emit_reloc(struct vc4_cl *cl, const struct vc4_cl_reloc *);
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#define __gen_user_data struct vc4_cl
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#define __gen_address_type struct vc4_cl_reloc
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#define __gen_address_offset(reloc) ((reloc)->offset)
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#define __gen_emit_reloc cl_pack_emit_reloc
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#include "kernel/vc4_packet.h"
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#include "broadcom/cle/v3d_packet_v21_pack.h"
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struct vc4_cl {
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void *base;
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struct vc4_job *job;
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struct vc4_cl_out *next;
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struct vc4_cl_out *reloc_next;
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uint32_t size;
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#ifndef NDEBUG
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uint32_t reloc_count;
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#endif
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};
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void vc4_init_cl(struct vc4_job *job, struct vc4_cl *cl);
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void vc4_reset_cl(struct vc4_cl *cl);
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uint32_t vc4_gem_hindex(struct vc4_job *job, struct vc4_bo *bo);
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struct PACKED unaligned_16 { uint16_t x; };
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struct PACKED unaligned_32 { uint32_t x; };
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static inline uint32_t cl_offset(struct vc4_cl *cl)
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{
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return (char *)cl->next - (char *)cl->base;
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}
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static inline void
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cl_advance(struct vc4_cl_out **cl, uint32_t n)
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{
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(*cl) = (struct vc4_cl_out *)((char *)(*cl) + n);
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}
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static inline struct vc4_cl_out *
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cl_start(struct vc4_cl *cl)
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{
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return cl->next;
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}
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static inline void
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cl_end(struct vc4_cl *cl, struct vc4_cl_out *next)
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{
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cl->next = next;
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assert(cl_offset(cl) <= cl->size);
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}
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static inline void
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put_unaligned_32(struct vc4_cl_out *ptr, uint32_t val)
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{
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struct unaligned_32 *p = (void *)ptr;
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p->x = val;
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}
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static inline void
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put_unaligned_16(struct vc4_cl_out *ptr, uint16_t val)
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{
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struct unaligned_16 *p = (void *)ptr;
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p->x = val;
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}
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static inline void
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cl_u8(struct vc4_cl_out **cl, uint8_t n)
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{
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*(uint8_t *)(*cl) = n;
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cl_advance(cl, 1);
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}
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static inline void
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cl_u16(struct vc4_cl_out **cl, uint16_t n)
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{
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put_unaligned_16(*cl, n);
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cl_advance(cl, 2);
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}
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static inline void
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cl_u32(struct vc4_cl_out **cl, uint32_t n)
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{
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put_unaligned_32(*cl, n);
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cl_advance(cl, 4);
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}
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static inline void
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cl_aligned_u32(struct vc4_cl_out **cl, uint32_t n)
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{
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*(uint32_t *)(*cl) = n;
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cl_advance(cl, 4);
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}
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static inline void
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cl_ptr(struct vc4_cl_out **cl, void *ptr)
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{
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*(struct vc4_cl_out **)(*cl) = ptr;
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cl_advance(cl, sizeof(void *));
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}
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static inline void
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cl_f(struct vc4_cl_out **cl, float f)
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{
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cl_u32(cl, fui(f));
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}
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static inline void
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cl_aligned_f(struct vc4_cl_out **cl, float f)
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{
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cl_aligned_u32(cl, fui(f));
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}
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static inline struct vc4_cl_out *
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cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
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{
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assert(cl->reloc_count == 0);
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#ifndef NDEBUG
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cl->reloc_count = n;
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#endif
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cl->reloc_next = cl->next;
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/* Reserve the space where hindex will be written. */
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cl_advance(&cl->next, n * 4);
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return cl->next;
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}
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static inline void
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cl_reloc(struct vc4_job *job, struct vc4_cl *cl, struct vc4_cl_out **cl_out,
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struct vc4_bo *bo, uint32_t offset)
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{
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*(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
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cl_advance(&cl->reloc_next, 4);
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#ifndef NDEBUG
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cl->reloc_count--;
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#endif
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cl_u32(cl_out, offset);
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}
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static inline void
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cl_aligned_reloc(struct vc4_job *job, struct vc4_cl *cl,
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struct vc4_cl_out **cl_out,
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struct vc4_bo *bo, uint32_t offset)
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{
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*(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
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cl_advance(&cl->reloc_next, 4);
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#ifndef NDEBUG
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cl->reloc_count--;
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#endif
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cl_aligned_u32(cl_out, offset);
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}
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/**
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* Reference to a BO with its associated offset, used in the pack process.
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*/
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static inline struct vc4_cl_reloc
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cl_address(struct vc4_bo *bo, uint32_t offset)
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{
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struct vc4_cl_reloc reloc = {
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.bo = bo,
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.offset = offset,
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};
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return reloc;
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}
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void cl_ensure_space(struct vc4_cl *cl, uint32_t size);
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#define cl_packet_header(packet) V3D21_ ## packet ## _header
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#define cl_packet_length(packet) V3D21_ ## packet ## _length
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#define cl_packet_pack(packet) V3D21_ ## packet ## _pack
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#define cl_packet_struct(packet) V3D21_ ## packet
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static inline void *
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cl_get_emit_space(struct vc4_cl_out **cl, size_t size)
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{
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void *addr = *cl;
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cl_advance(cl, size);
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return addr;
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}
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/* Macro for setting up an emit of a CL struct. A temporary unpacked struct
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* is created, which you get to set fields in of the form:
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*
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* cl_emit(bcl, FLAT_SHADE_FLAGS, flags) {
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* .flags.flat_shade_flags = 1 << 2,
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* }
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*
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* or default values only can be emitted with just:
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*
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* cl_emit(bcl, FLAT_SHADE_FLAGS, flags);
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*
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* The trick here is that we make a for loop that will execute the body
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* (either the block or the ';' after the macro invocation) exactly once.
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* Also, *dst is actually of the wrong type, it's the
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* uint8_t[cl_packet_length()] in the CL, not a cl_packet_struct(packet).
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*/
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#define cl_emit(cl, packet, name) \
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for (struct cl_packet_struct(packet) name = { \
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cl_packet_header(packet) \
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}, \
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*_loop_terminate = &name; \
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__builtin_expect(_loop_terminate != NULL, 1); \
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({ \
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struct vc4_cl_out *cl_out = cl_start(cl); \
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cl_packet_pack(packet)(cl, (uint8_t *)cl_out, &name); \
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VG(VALGRIND_CHECK_MEM_IS_DEFINED(cl_out, \
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cl_packet_length(packet))); \
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cl_advance(&cl_out, cl_packet_length(packet)); \
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cl_end(cl, cl_out); \
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_loop_terminate = NULL; \
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})) \
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#define cl_emit_prepacked(cl, packet) do { \
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memcpy((cl)->next, packet, sizeof(*packet)); \
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cl_advance(&(cl)->next, sizeof(*packet)); \
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} while (0)
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/**
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* Helper function called by the XML-generated pack functions for filling in
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* an address field in shader records.
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*
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* Relocations for shader recs and texturing involve the packet (or uniforms
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* stream) being preceded by the handles to the BOs, and the offset within the
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* BO being in the stream (the output of this function).
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*/
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static inline void
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cl_pack_emit_reloc(struct vc4_cl *cl, const struct vc4_cl_reloc *reloc)
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{
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*(uint32_t *)cl->reloc_next = vc4_gem_hindex(cl->job, reloc->bo);
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cl_advance(&cl->reloc_next, 4);
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#ifndef NDEBUG
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cl->reloc_count--;
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#endif
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}
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#endif /* VC4_CL_H */
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