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/*
* Copyright © 2019 Google LLC
*
* 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 TU_CS_H
#define TU_CS_H
#include "tu_private.h"
#include "registers/adreno_pm4.xml.h"
void
tu_cs_init(struct tu_cs *cs, enum tu_cs_mode mode, uint32_t initial_size);
void
tu_cs_init_external(struct tu_cs *cs, uint32_t *start, uint32_t *end);
void
tu_cs_finish(struct tu_device *dev, struct tu_cs *cs);
void
tu_cs_begin(struct tu_cs *cs);
void
tu_cs_end(struct tu_cs *cs);
VkResult
tu_cs_begin_sub_stream(struct tu_device *dev,
struct tu_cs *cs,
uint32_t size,
struct tu_cs *sub_cs);
struct tu_cs_entry
tu_cs_end_sub_stream(struct tu_cs *cs, struct tu_cs *sub_cs);
VkResult
tu_cs_reserve_space(struct tu_device *dev,
struct tu_cs *cs,
uint32_t reserved_size);
void
tu_cs_reset(struct tu_device *dev, struct tu_cs *cs);
/**
* Discard all entries. This allows \a cs to be reused while keeping the
* existing BOs and command packets intact.
*/
static inline void
tu_cs_discard_entries(struct tu_cs *cs)
{
assert(cs->mode == TU_CS_MODE_GROW);
cs->entry_count = 0;
}
/**
* Get the size needed for tu_cs_emit_call.
*/
static inline uint32_t
tu_cs_get_call_size(const struct tu_cs *cs)
{
assert(cs->mode == TU_CS_MODE_GROW);
/* each CP_INDIRECT_BUFFER needs 4 dwords */
return cs->entry_count * 4;
}
/**
* Assert that we did not exceed the reserved space.
*/
static inline void
tu_cs_sanity_check(const struct tu_cs *cs)
{
assert(cs->start <= cs->cur);
assert(cs->cur <= cs->reserved_end);
assert(cs->reserved_end <= cs->end);
}
/**
* Emit a uint32_t value into a command stream, without boundary checking.
*/
static inline void
tu_cs_emit(struct tu_cs *cs, uint32_t value)
{
assert(cs->cur < cs->reserved_end);
*cs->cur = value;
++cs->cur;
}
static inline unsigned
tu_odd_parity_bit(unsigned val)
{
/* See: http://graphics.stanford.edu/~seander/bithacks.html#ParityParallel
* note that we want odd parity so 0x6996 is inverted.
*/
val ^= val >> 16;
val ^= val >> 8;
val ^= val >> 4;
val &= 0xf;
return (~0x6996 >> val) & 1;
}
/**
* Emit a type-4 command packet header into a command stream.
*/
static inline void
tu_cs_emit_pkt4(struct tu_cs *cs, uint16_t regindx, uint16_t cnt)
{
tu_cs_emit(cs, CP_TYPE4_PKT | cnt | (tu_odd_parity_bit(cnt) << 7) |
((regindx & 0x3ffff) << 8) |
((tu_odd_parity_bit(regindx) << 27)));
}
/**
* Emit a type-7 command packet header into a command stream.
*/
static inline void
tu_cs_emit_pkt7(struct tu_cs *cs, uint8_t opcode, uint16_t cnt)
{
tu_cs_emit(cs, CP_TYPE7_PKT | cnt | (tu_odd_parity_bit(cnt) << 15) |
((opcode & 0x7f) << 16) |
((tu_odd_parity_bit(opcode) << 23)));
}
static inline void
tu_cs_emit_wfi(struct tu_cs *cs)
{
tu_cs_emit_pkt7(cs, CP_WAIT_FOR_IDLE, 0);
}
static inline void
tu_cs_emit_qw(struct tu_cs *cs, uint64_t value)
{
tu_cs_emit(cs, (uint32_t) value);
tu_cs_emit(cs, (uint32_t) (value >> 32));
}
static inline void
tu_cs_emit_write_reg(struct tu_cs *cs, uint16_t reg, uint32_t value)
{
tu_cs_emit_pkt4(cs, reg, 1);
tu_cs_emit(cs, value);
}
/**
* Emit a CP_INDIRECT_BUFFER command packet.
*/
static inline void
tu_cs_emit_ib(struct tu_cs *cs, const struct tu_cs_entry *entry)
{
assert(entry->bo);
assert(entry->size && entry->offset + entry->size <= entry->bo->size);
assert(entry->size % sizeof(uint32_t) == 0);
assert(entry->offset % sizeof(uint32_t) == 0);
tu_cs_emit_pkt7(cs, CP_INDIRECT_BUFFER, 3);
tu_cs_emit_qw(cs, entry->bo->iova + entry->offset);
tu_cs_emit(cs, entry->size / sizeof(uint32_t));
}
/**
* Emit a CP_INDIRECT_BUFFER command packet for each entry in the target
* command stream.
*/
static inline void
tu_cs_emit_call(struct tu_cs *cs, const struct tu_cs *target)
{
assert(target->mode == TU_CS_MODE_GROW);
for (uint32_t i = 0; i < target->entry_count; i++)
tu_cs_emit_ib(cs, target->entries + i);
}
#endif /* TU_CS_H */
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