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/*
* Copyright (c) 2012 Rob Clark <robdclark@gmail.com>
*
* 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.
*/
/*
* Helper lib to track gpu buffers contents/address, and map between gpu and
* host address while decoding cmdstream/crashdumps
*/
#include <assert.h>
#include <stdlib.h>
#include "buffers.h"
struct buffer {
void *hostptr;
unsigned int len;
uint64_t gpuaddr;
/* for 'once' mode, for buffers containing cmdstream keep track per offset
* into buffer of which modes it has already been dumped;
*/
struct {
unsigned offset;
unsigned dumped_mask;
} offsets[64];
unsigned noffsets;
};
static struct buffer buffers[512];
static int nbuffers;
static int
buffer_contains_gpuaddr(struct buffer *buf, uint64_t gpuaddr, uint32_t len)
{
return (buf->gpuaddr <= gpuaddr) && (gpuaddr < (buf->gpuaddr + buf->len));
}
static int
buffer_contains_hostptr(struct buffer *buf, void *hostptr)
{
return (buf->hostptr <= hostptr) && (hostptr < (buf->hostptr + buf->len));
}
uint64_t
gpuaddr(void *hostptr)
{
int i;
for (i = 0; i < nbuffers; i++)
if (buffer_contains_hostptr(&buffers[i], hostptr))
return buffers[i].gpuaddr + (hostptr - buffers[i].hostptr);
return 0;
}
uint64_t
gpubaseaddr(uint64_t gpuaddr)
{
int i;
if (!gpuaddr)
return 0;
for (i = 0; i < nbuffers; i++)
if (buffer_contains_gpuaddr(&buffers[i], gpuaddr, 0))
return buffers[i].gpuaddr;
return 0;
}
void *
hostptr(uint64_t gpuaddr)
{
int i;
if (!gpuaddr)
return 0;
for (i = 0; i < nbuffers; i++)
if (buffer_contains_gpuaddr(&buffers[i], gpuaddr, 0))
return buffers[i].hostptr + (gpuaddr - buffers[i].gpuaddr);
return 0;
}
unsigned
hostlen(uint64_t gpuaddr)
{
int i;
if (!gpuaddr)
return 0;
for (i = 0; i < nbuffers; i++)
if (buffer_contains_gpuaddr(&buffers[i], gpuaddr, 0))
return buffers[i].len + buffers[i].gpuaddr - gpuaddr;
return 0;
}
bool
has_dumped(uint64_t gpuaddr, unsigned enable_mask)
{
if (!gpuaddr)
return false;
for (int i = 0; i < nbuffers; i++) {
if (buffer_contains_gpuaddr(&buffers[i], gpuaddr, 0)) {
struct buffer *b = &buffers[i];
assert(gpuaddr >= b->gpuaddr);
unsigned offset = gpuaddr - b->gpuaddr;
unsigned n = 0;
while (n < b->noffsets) {
if (offset == b->offsets[n].offset)
break;
n++;
}
/* if needed, allocate a new offset entry: */
if (n == b->noffsets) {
b->noffsets++;
assert(b->noffsets < ARRAY_SIZE(b->offsets));
b->offsets[n].dumped_mask = 0;
b->offsets[n].offset = offset;
}
if ((b->offsets[n].dumped_mask & enable_mask) == enable_mask)
return true;
b->offsets[n].dumped_mask |= enable_mask;
return false;
}
}
return false;
}
void
reset_buffers(void)
{
for (int i = 0; i < nbuffers; i++) {
free(buffers[i].hostptr);
buffers[i].hostptr = NULL;
buffers[i].len = 0;
buffers[i].noffsets = 0;
}
nbuffers = 0;
}
/**
* Record buffer contents, takes ownership of hostptr (freed in
* reset_buffers())
*/
void
add_buffer(uint64_t gpuaddr, unsigned int len, void *hostptr)
{
int i;
for (i = 0; i < nbuffers; i++) {
if (buffers[i].gpuaddr == gpuaddr)
break;
}
if (i == nbuffers) {
/* some traces, like test-perf, with some blob versions,
* seem to generate an unreasonable # of gpu buffers (a
* leak?), so just ignore them.
*/
if (nbuffers >= ARRAY_SIZE(buffers)) {
free(hostptr);
return;
}
nbuffers++;
}
buffers[i].hostptr = hostptr;
buffers[i].len = len;
buffers[i].gpuaddr = gpuaddr;
}
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