xenocara/lib/libdrm/freedreno/msm/msm_ringbuffer.c
2018-11-01 08:22:36 +00:00

724 lines
20 KiB
C

/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include <assert.h>
#include <inttypes.h>
#include "xf86atomic.h"
#include "freedreno_ringbuffer.h"
#include "msm_priv.h"
/* represents a single cmd buffer in the submit ioctl. Each cmd buffer has
* a backing bo, and a reloc table.
*/
struct msm_cmd {
struct list_head list;
struct fd_ringbuffer *ring;
struct fd_bo *ring_bo;
/* reloc's table: */
DECLARE_ARRAY(struct drm_msm_gem_submit_reloc, relocs);
uint32_t size;
/* has cmd already been added to parent rb's submit.cmds table? */
int is_appended_to_submit;
};
struct msm_ringbuffer {
struct fd_ringbuffer base;
/* submit ioctl related tables:
* Note that bos and cmds are tracked by the parent ringbuffer, since
* that is global to the submit ioctl call. The reloc's table is tracked
* per cmd-buffer.
*/
struct {
/* bo's table: */
DECLARE_ARRAY(struct drm_msm_gem_submit_bo, bos);
/* cmd's table: */
DECLARE_ARRAY(struct drm_msm_gem_submit_cmd, cmds);
} submit;
/* should have matching entries in submit.bos: */
/* Note, only in parent ringbuffer */
DECLARE_ARRAY(struct fd_bo *, bos);
/* should have matching entries in submit.cmds: */
DECLARE_ARRAY(struct msm_cmd *, cmds);
/* List of physical cmdstream buffers (msm_cmd) assocated with this
* logical fd_ringbuffer.
*
* Note that this is different from msm_ringbuffer::cmds (which
* shadows msm_ringbuffer::submit::cmds for tracking submit ioctl
* related stuff, and *only* is tracked in the parent ringbuffer.
* And only has "completed" cmd buffers (ie. we already know the
* size) added via get_cmd().
*/
struct list_head cmd_list;
int is_growable;
unsigned cmd_count;
unsigned offset; /* for sub-allocated stateobj rb's */
unsigned seqno;
/* maps fd_bo to idx: */
void *bo_table;
/* maps msm_cmd to drm_msm_gem_submit_cmd in parent rb. Each rb has a
* list of msm_cmd's which correspond to each chunk of cmdstream in
* a 'growable' rb. For each of those we need to create one
* drm_msm_gem_submit_cmd in the parent rb which collects the state
* for the submit ioctl. Because we can have multiple IB's to the same
* target rb (for example, or same stateobj emit multiple times), and
* because in theory we can have multiple different rb's that have a
* reference to a given target, we need a hashtable to track this per
* rb.
*/
void *cmd_table;
};
static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x)
{
return (struct msm_ringbuffer *)x;
}
#define INIT_SIZE 0x1000
static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER;
static struct msm_cmd *current_cmd(struct fd_ringbuffer *ring)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
assert(!LIST_IS_EMPTY(&msm_ring->cmd_list));
return LIST_LAST_ENTRY(&msm_ring->cmd_list, struct msm_cmd, list);
}
static void ring_cmd_del(struct msm_cmd *cmd)
{
fd_bo_del(cmd->ring_bo);
list_del(&cmd->list);
to_msm_ringbuffer(cmd->ring)->cmd_count--;
free(cmd->relocs);
free(cmd);
}
static struct msm_cmd * ring_cmd_new(struct fd_ringbuffer *ring, uint32_t size,
enum fd_ringbuffer_flags flags)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
struct msm_cmd *cmd = calloc(1, sizeof(*cmd));
if (!cmd)
return NULL;
cmd->ring = ring;
/* TODO separate suballoc buffer for small non-streaming state, using
* smaller page-sized backing bo's.
*/
if (flags & FD_RINGBUFFER_STREAMING) {
struct msm_pipe *msm_pipe = to_msm_pipe(ring->pipe);
unsigned suballoc_offset = 0;
struct fd_bo *suballoc_bo = NULL;
if (msm_pipe->suballoc_ring) {
struct msm_ringbuffer *suballoc_ring = to_msm_ringbuffer(msm_pipe->suballoc_ring);
assert(msm_pipe->suballoc_ring->flags & FD_RINGBUFFER_OBJECT);
assert(suballoc_ring->cmd_count == 1);
suballoc_bo = current_cmd(msm_pipe->suballoc_ring)->ring_bo;
suballoc_offset = fd_ringbuffer_size(msm_pipe->suballoc_ring) +
suballoc_ring->offset;
suballoc_offset = ALIGN(suballoc_offset, 0x10);
if ((size + suballoc_offset) > suballoc_bo->size) {
suballoc_bo = NULL;
}
}
if (!suballoc_bo) {
cmd->ring_bo = fd_bo_new_ring(ring->pipe->dev, 0x8000, 0);
msm_ring->offset = 0;
} else {
cmd->ring_bo = fd_bo_ref(suballoc_bo);
msm_ring->offset = suballoc_offset;
}
if (msm_pipe->suballoc_ring)
fd_ringbuffer_del(msm_pipe->suballoc_ring);
msm_pipe->suballoc_ring = fd_ringbuffer_ref(ring);
} else {
cmd->ring_bo = fd_bo_new_ring(ring->pipe->dev, size, 0);
}
if (!cmd->ring_bo)
goto fail;
list_addtail(&cmd->list, &msm_ring->cmd_list);
msm_ring->cmd_count++;
return cmd;
fail:
ring_cmd_del(cmd);
return NULL;
}
static uint32_t append_bo(struct fd_ringbuffer *ring, struct fd_bo *bo)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
uint32_t idx;
idx = APPEND(&msm_ring->submit, bos);
idx = APPEND(msm_ring, bos);
msm_ring->submit.bos[idx].flags = 0;
msm_ring->submit.bos[idx].handle = bo->handle;
msm_ring->submit.bos[idx].presumed = to_msm_bo(bo)->presumed;
msm_ring->bos[idx] = fd_bo_ref(bo);
return idx;
}
/* add (if needed) bo, return idx: */
static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
struct msm_bo *msm_bo = to_msm_bo(bo);
uint32_t idx;
pthread_mutex_lock(&idx_lock);
if (msm_bo->current_ring_seqno == msm_ring->seqno) {
idx = msm_bo->idx;
} else {
void *val;
if (!msm_ring->bo_table)
msm_ring->bo_table = drmHashCreate();
if (!drmHashLookup(msm_ring->bo_table, bo->handle, &val)) {
/* found */
idx = (uint32_t)(uintptr_t)val;
} else {
idx = append_bo(ring, bo);
val = (void *)(uintptr_t)idx;
drmHashInsert(msm_ring->bo_table, bo->handle, val);
}
msm_bo->current_ring_seqno = msm_ring->seqno;
msm_bo->idx = idx;
}
pthread_mutex_unlock(&idx_lock);
if (flags & FD_RELOC_READ)
msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_READ;
if (flags & FD_RELOC_WRITE)
msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_WRITE;
return idx;
}
/* Ensure that submit has corresponding entry in cmds table for the
* target cmdstream buffer:
*
* Returns TRUE if new cmd added (else FALSE if it was already in
* the cmds table)
*/
static int get_cmd(struct fd_ringbuffer *ring, struct msm_cmd *target_cmd,
uint32_t submit_offset, uint32_t size, uint32_t type)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
struct drm_msm_gem_submit_cmd *cmd;
uint32_t i;
void *val;
if (!msm_ring->cmd_table)
msm_ring->cmd_table = drmHashCreate();
/* figure out if we already have a cmd buf.. short-circuit hash
* lookup if:
* - target cmd has never been added to submit.cmds
* - target cmd is not a streaming stateobj (which unlike longer
* lived CSO stateobj, is not expected to be reused with multiple
* submits)
*/
if (target_cmd->is_appended_to_submit &&
!(target_cmd->ring->flags & FD_RINGBUFFER_STREAMING) &&
!drmHashLookup(msm_ring->cmd_table, (unsigned long)target_cmd, &val)) {
i = VOID2U64(val);
cmd = &msm_ring->submit.cmds[i];
assert(cmd->submit_offset == submit_offset);
assert(cmd->size == size);
assert(cmd->type == type);
assert(msm_ring->submit.bos[cmd->submit_idx].handle ==
target_cmd->ring_bo->handle);
return FALSE;
}
/* create cmd buf if not: */
i = APPEND(&msm_ring->submit, cmds);
APPEND(msm_ring, cmds);
msm_ring->cmds[i] = target_cmd;
cmd = &msm_ring->submit.cmds[i];
cmd->type = type;
cmd->submit_idx = bo2idx(ring, target_cmd->ring_bo, FD_RELOC_READ);
cmd->submit_offset = submit_offset;
cmd->size = size;
cmd->pad = 0;
target_cmd->is_appended_to_submit = TRUE;
if (!(target_cmd->ring->flags & FD_RINGBUFFER_STREAMING)) {
drmHashInsert(msm_ring->cmd_table, (unsigned long)target_cmd,
U642VOID(i));
}
target_cmd->size = size;
return TRUE;
}
static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring)
{
struct msm_cmd *cmd = current_cmd(ring);
uint8_t *base = fd_bo_map(cmd->ring_bo);
return base + to_msm_ringbuffer(ring)->offset;
}
static void delete_cmds(struct msm_ringbuffer *msm_ring)
{
struct msm_cmd *cmd, *tmp;
LIST_FOR_EACH_ENTRY_SAFE(cmd, tmp, &msm_ring->cmd_list, list) {
ring_cmd_del(cmd);
}
}
static void flush_reset(struct fd_ringbuffer *ring)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
unsigned i;
for (i = 0; i < msm_ring->nr_bos; i++) {
struct msm_bo *msm_bo = to_msm_bo(msm_ring->bos[i]);
if (!msm_bo)
continue;
msm_bo->current_ring_seqno = 0;
fd_bo_del(&msm_bo->base);
}
for (i = 0; i < msm_ring->nr_cmds; i++) {
struct msm_cmd *msm_cmd = msm_ring->cmds[i];
if (msm_cmd->ring == ring)
continue;
if (msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT)
fd_ringbuffer_del(msm_cmd->ring);
}
msm_ring->submit.nr_cmds = 0;
msm_ring->submit.nr_bos = 0;
msm_ring->nr_cmds = 0;
msm_ring->nr_bos = 0;
if (msm_ring->bo_table) {
drmHashDestroy(msm_ring->bo_table);
msm_ring->bo_table = NULL;
}
if (msm_ring->cmd_table) {
drmHashDestroy(msm_ring->cmd_table);
msm_ring->cmd_table = NULL;
}
if (msm_ring->is_growable) {
delete_cmds(msm_ring);
} else {
/* in old mode, just reset the # of relocs: */
current_cmd(ring)->nr_relocs = 0;
}
}
static void finalize_current_cmd(struct fd_ringbuffer *ring, uint32_t *last_start)
{
uint32_t submit_offset, size, type;
struct fd_ringbuffer *parent;
if (ring->parent) {
parent = ring->parent;
type = MSM_SUBMIT_CMD_IB_TARGET_BUF;
} else {
parent = ring;
type = MSM_SUBMIT_CMD_BUF;
}
submit_offset = offset_bytes(last_start, ring->start);
size = offset_bytes(ring->cur, last_start);
get_cmd(parent, current_cmd(ring), submit_offset, size, type);
}
static void dump_submit(struct msm_ringbuffer *msm_ring)
{
uint32_t i, j;
for (i = 0; i < msm_ring->submit.nr_bos; i++) {
struct drm_msm_gem_submit_bo *bo = &msm_ring->submit.bos[i];
ERROR_MSG(" bos[%d]: handle=%u, flags=%x", i, bo->handle, bo->flags);
}
for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
struct drm_msm_gem_submit_reloc *relocs = U642VOID(cmd->relocs);
ERROR_MSG(" cmd[%d]: type=%u, submit_idx=%u, submit_offset=%u, size=%u",
i, cmd->type, cmd->submit_idx, cmd->submit_offset, cmd->size);
for (j = 0; j < cmd->nr_relocs; j++) {
struct drm_msm_gem_submit_reloc *r = &relocs[j];
ERROR_MSG(" reloc[%d]: submit_offset=%u, or=%08x, shift=%d, reloc_idx=%u"
", reloc_offset=%"PRIu64, j, r->submit_offset, r->or, r->shift,
r->reloc_idx, r->reloc_offset);
}
}
}
static struct drm_msm_gem_submit_reloc *
handle_stateobj_relocs(struct fd_ringbuffer *parent, struct fd_ringbuffer *stateobj,
struct drm_msm_gem_submit_reloc *orig_relocs, unsigned nr_relocs)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(stateobj);
struct drm_msm_gem_submit_reloc *relocs = malloc(nr_relocs * sizeof(*relocs));
unsigned i;
for (i = 0; i < nr_relocs; i++) {
unsigned idx = orig_relocs[i].reloc_idx;
struct fd_bo *bo = msm_ring->bos[idx];
unsigned flags = 0;
if (msm_ring->submit.bos[idx].flags & MSM_SUBMIT_BO_READ)
flags |= FD_RELOC_READ;
if (msm_ring->submit.bos[idx].flags & MSM_SUBMIT_BO_WRITE)
flags |= FD_RELOC_WRITE;
relocs[i] = orig_relocs[i];
relocs[i].reloc_idx = bo2idx(parent, bo, flags);
}
/* stateobj rb's could have reloc's to other stateobj rb's which didn't
* get propagated to the parent rb at _emit_reloc_ring() time (because
* the parent wasn't known then), so fix that up now:
*/
for (i = 0; i < msm_ring->nr_cmds; i++) {
struct msm_cmd *msm_cmd = msm_ring->cmds[i];
struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
if (msm_ring->cmds[i]->ring == stateobj)
continue;
assert(msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT);
if (get_cmd(parent, msm_cmd, cmd->submit_offset, cmd->size, cmd->type)) {
fd_ringbuffer_ref(msm_cmd->ring);
}
}
return relocs;
}
static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start,
int in_fence_fd, int *out_fence_fd)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
struct msm_pipe *msm_pipe = to_msm_pipe(ring->pipe);
struct drm_msm_gem_submit req = {
.flags = msm_pipe->pipe,
.queueid = msm_pipe->queue_id,
};
uint32_t i;
int ret;
assert(!ring->parent);
if (in_fence_fd != -1) {
req.flags |= MSM_SUBMIT_FENCE_FD_IN | MSM_SUBMIT_NO_IMPLICIT;
req.fence_fd = in_fence_fd;
}
if (out_fence_fd) {
req.flags |= MSM_SUBMIT_FENCE_FD_OUT;
}
finalize_current_cmd(ring, last_start);
/* for each of the cmd's fix up their reloc's: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct msm_cmd *msm_cmd = msm_ring->cmds[i];
struct drm_msm_gem_submit_reloc *relocs = msm_cmd->relocs;
struct drm_msm_gem_submit_cmd *cmd;
unsigned nr_relocs = msm_cmd->nr_relocs;
/* for reusable stateobjs, the reloc table has reloc_idx that
* points into it's own private bos table, rather than the global
* bos table used for the submit, so we need to add the stateobj's
* bos to the global table and construct new relocs table with
* corresponding reloc_idx
*/
if (msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT) {
relocs = handle_stateobj_relocs(ring, msm_cmd->ring,
relocs, nr_relocs);
}
cmd = &msm_ring->submit.cmds[i];
cmd->relocs = VOID2U64(relocs);
cmd->nr_relocs = nr_relocs;
}
/* needs to be after get_cmd() as that could create bos/cmds table: */
req.bos = VOID2U64(msm_ring->submit.bos),
req.nr_bos = msm_ring->submit.nr_bos;
req.cmds = VOID2U64(msm_ring->submit.cmds),
req.nr_cmds = msm_ring->submit.nr_cmds;
DEBUG_MSG("nr_cmds=%u, nr_bos=%u", req.nr_cmds, req.nr_bos);
ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT,
&req, sizeof(req));
if (ret) {
ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno));
dump_submit(msm_ring);
} else if (!ret) {
/* update timestamp on all rings associated with submit: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct msm_cmd *msm_cmd = msm_ring->cmds[i];
msm_cmd->ring->last_timestamp = req.fence;
}
if (out_fence_fd) {
*out_fence_fd = req.fence_fd;
}
}
/* free dynamically constructed stateobj relocs tables: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
struct msm_cmd *msm_cmd = msm_ring->cmds[i];
if (msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT) {
free(U642VOID(cmd->relocs));
}
}
flush_reset(ring);
return ret;
}
static void msm_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t size)
{
assert(to_msm_ringbuffer(ring)->is_growable);
finalize_current_cmd(ring, ring->last_start);
ring_cmd_new(ring, size, 0);
}
static void msm_ringbuffer_reset(struct fd_ringbuffer *ring)
{
flush_reset(ring);
}
static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring,
const struct fd_reloc *r)
{
struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
struct msm_bo *msm_bo = to_msm_bo(r->bo);
struct drm_msm_gem_submit_reloc *reloc;
struct msm_cmd *cmd = current_cmd(ring);
uint32_t idx = APPEND(cmd, relocs);
uint32_t addr;
reloc = &cmd->relocs[idx];
reloc->reloc_idx = bo2idx(parent, r->bo, r->flags);
reloc->reloc_offset = r->offset;
reloc->or = r->or;
reloc->shift = r->shift;
reloc->submit_offset = offset_bytes(ring->cur, ring->start) +
to_msm_ringbuffer(ring)->offset;
addr = msm_bo->presumed;
if (reloc->shift < 0)
addr >>= -reloc->shift;
else
addr <<= reloc->shift;
(*ring->cur++) = addr | r->or;
if (ring->pipe->gpu_id >= 500) {
struct drm_msm_gem_submit_reloc *reloc_hi;
/* NOTE: grab reloc_idx *before* APPEND() since that could
* realloc() meaning that 'reloc' ptr is no longer valid:
*/
uint32_t reloc_idx = reloc->reloc_idx;
idx = APPEND(cmd, relocs);
reloc_hi = &cmd->relocs[idx];
reloc_hi->reloc_idx = reloc_idx;
reloc_hi->reloc_offset = r->offset;
reloc_hi->or = r->orhi;
reloc_hi->shift = r->shift - 32;
reloc_hi->submit_offset = offset_bytes(ring->cur, ring->start) +
to_msm_ringbuffer(ring)->offset;
addr = msm_bo->presumed >> 32;
if (reloc_hi->shift < 0)
addr >>= -reloc_hi->shift;
else
addr <<= reloc_hi->shift;
(*ring->cur++) = addr | r->orhi;
}
}
static uint32_t msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
struct fd_ringbuffer *target, uint32_t cmd_idx)
{
struct msm_cmd *cmd = NULL;
struct msm_ringbuffer *msm_target = to_msm_ringbuffer(target);
uint32_t idx = 0;
int added_cmd = FALSE;
uint32_t size;
uint32_t submit_offset = msm_target->offset;
LIST_FOR_EACH_ENTRY(cmd, &msm_target->cmd_list, list) {
if (idx == cmd_idx)
break;
idx++;
}
assert(cmd && (idx == cmd_idx));
if (idx < (msm_target->cmd_count - 1)) {
/* All but the last cmd buffer is fully "baked" (ie. already has
* done get_cmd() to add it to the cmds table). But in this case,
* the size we get is invalid (since it is calculated from the
* last cmd buffer):
*/
size = cmd->size;
} else {
struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
size = offset_bytes(target->cur, target->start);
added_cmd = get_cmd(parent, cmd, submit_offset, size,
MSM_SUBMIT_CMD_IB_TARGET_BUF);
}
msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){
.bo = cmd->ring_bo,
.flags = FD_RELOC_READ,
.offset = submit_offset,
});
/* Unlike traditional ringbuffers which are deleted as a set (after
* being flushed), mesa can't really guarantee that a stateobj isn't
* destroyed after emitted but before flush, so we must hold a ref:
*/
if (added_cmd && (target->flags & FD_RINGBUFFER_OBJECT)) {
fd_ringbuffer_ref(target);
}
return size;
}
static uint32_t msm_ringbuffer_cmd_count(struct fd_ringbuffer *ring)
{
return to_msm_ringbuffer(ring)->cmd_count;
}
static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring)
{
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
flush_reset(ring);
delete_cmds(msm_ring);
free(msm_ring->submit.cmds);
free(msm_ring->submit.bos);
free(msm_ring->bos);
free(msm_ring->cmds);
free(msm_ring);
}
static const struct fd_ringbuffer_funcs funcs = {
.hostptr = msm_ringbuffer_hostptr,
.flush = msm_ringbuffer_flush,
.grow = msm_ringbuffer_grow,
.reset = msm_ringbuffer_reset,
.emit_reloc = msm_ringbuffer_emit_reloc,
.emit_reloc_ring = msm_ringbuffer_emit_reloc_ring,
.cmd_count = msm_ringbuffer_cmd_count,
.destroy = msm_ringbuffer_destroy,
};
drm_private struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe,
uint32_t size, enum fd_ringbuffer_flags flags)
{
struct msm_ringbuffer *msm_ring;
struct fd_ringbuffer *ring;
msm_ring = calloc(1, sizeof(*msm_ring));
if (!msm_ring) {
ERROR_MSG("allocation failed");
return NULL;
}
if (size == 0) {
assert(pipe->dev->version >= FD_VERSION_UNLIMITED_CMDS);
size = INIT_SIZE;
msm_ring->is_growable = TRUE;
}
list_inithead(&msm_ring->cmd_list);
msm_ring->seqno = ++to_msm_device(pipe->dev)->ring_cnt;
ring = &msm_ring->base;
atomic_set(&ring->refcnt, 1);
ring->funcs = &funcs;
ring->size = size;
ring->pipe = pipe; /* needed in ring_cmd_new() */
ring_cmd_new(ring, size, flags);
return ring;
}