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freedreno/msm: split out cmd buffer tracking from ring 

First step towards supporting a single logical ringbuffer mapping to
multiple physical cmd buffers, which will enable dynamically growing
ringbuffers.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
main
Rob Clark 2016-06-03 15:41:20 -04:00
parent 0d61529130
commit dd1f372001
1 changed files with 84 additions and 46 deletions
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130
freedreno/msm/msm_ringbuffer.c
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@ -36,11 +36,26 @@
#include "freedreno_ringbuffer.h" #include "freedreno_ringbuffer.h"
#include "msm_priv.h" #include "msm_priv.h"
struct msm_ringbuffer { /* represents a single cmd buffer in the submit ioctl. Each cmd buffer has
struct fd_ringbuffer base; * a backing bo, and a reloc table.
*/
struct msm_cmd {
struct fd_ringbuffer *ring;
struct fd_bo *ring_bo; struct fd_bo *ring_bo;
/* submit ioctl related tables: */ /* reloc's table: */
struct drm_msm_gem_submit_reloc *relocs;
uint32_t nr_relocs, max_relocs;
};
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 { struct {
/* bo's table: */ /* bo's table: */
struct drm_msm_gem_submit_bo *bos; struct drm_msm_gem_submit_bo *bos;
@ -49,19 +64,19 @@ struct msm_ringbuffer {
/* cmd's table: */ /* cmd's table: */
struct drm_msm_gem_submit_cmd *cmds; struct drm_msm_gem_submit_cmd *cmds;
uint32_t nr_cmds, max_cmds; uint32_t nr_cmds, max_cmds;
/* reloc's table: */
struct drm_msm_gem_submit_reloc *relocs;
uint32_t nr_relocs, max_relocs;
} submit; } submit;
/* should have matching entries in submit.bos: */ /* should have matching entries in submit.bos: */
/* Note, only in parent ringbuffer */
struct fd_bo **bos; struct fd_bo **bos;
uint32_t nr_bos, max_bos; uint32_t nr_bos, max_bos;
/* should have matching entries in submit.cmds: */ /* should have matching entries in submit.cmds: */
struct fd_ringbuffer **rings; struct msm_cmd **cmds;
uint32_t nr_rings, max_rings; uint32_t nr_cmds, max_cmds;
/* current cmd-buffer: */
struct msm_cmd *cmd;
}; };
static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER; static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER;
@ -99,6 +114,33 @@ static struct fd_bo * ring_bo_new(struct fd_device *dev, uint32_t size)
return bo; return bo;
} }
static void ring_cmd_del(struct msm_cmd *cmd)
{
if (cmd->ring_bo)
ring_bo_del(cmd->ring->pipe->dev, cmd->ring_bo);
free(cmd->relocs);
free(cmd);
}
static struct msm_cmd * ring_cmd_new(struct fd_ringbuffer *ring, uint32_t size)
{
struct msm_cmd *cmd = calloc(1, sizeof(*cmd));
if (!cmd)
return NULL;
cmd->ring = ring;
cmd->ring_bo = ring_bo_new(ring->pipe->dev, size);
if (!cmd->ring_bo)
goto fail;
return cmd;
fail:
ring_cmd_del(cmd);
return NULL;
}
static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz) static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz)
{ {
if ((nr + 1) > *max) { if ((nr + 1) > *max) {
@ -179,8 +221,7 @@ static int check_cmd_bo(struct fd_ringbuffer *ring,
/* Ensure that submit has corresponding entry in cmds table for the /* Ensure that submit has corresponding entry in cmds table for the
* target cmdstream buffer: * target cmdstream buffer:
*/ */
static void get_cmd(struct fd_ringbuffer *ring, static void get_cmd(struct fd_ringbuffer *ring, struct msm_cmd *target_cmd,
struct fd_ringbuffer *target_ring, struct fd_bo *target_bo,
uint32_t submit_offset, uint32_t size, uint32_t type) uint32_t submit_offset, uint32_t size, uint32_t type)
{ {
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
@ -193,17 +234,17 @@ static void get_cmd(struct fd_ringbuffer *ring,
if ((cmd->submit_offset == submit_offset) && if ((cmd->submit_offset == submit_offset) &&
(cmd->size == size) && (cmd->size == size) &&
(cmd->type == type) && (cmd->type == type) &&
check_cmd_bo(ring, cmd, target_bo)) check_cmd_bo(ring, cmd, target_cmd->ring_bo))
return; return;
} }
/* create cmd buf if not: */ /* create cmd buf if not: */
i = APPEND(&msm_ring->submit, cmds); i = APPEND(&msm_ring->submit, cmds);
APPEND(msm_ring, rings); APPEND(msm_ring, cmds);
msm_ring->rings[i] = target_ring; msm_ring->cmds[i] = target_cmd;
cmd = &msm_ring->submit.cmds[i]; cmd = &msm_ring->submit.cmds[i];
cmd->type = type; cmd->type = type;
cmd->submit_idx = bo2idx(ring, target_bo, FD_RELOC_READ); cmd->submit_idx = bo2idx(ring, target_cmd->ring_bo, FD_RELOC_READ);
cmd->submit_offset = submit_offset; cmd->submit_offset = submit_offset;
cmd->size = size; cmd->size = size;
cmd->pad = 0; cmd->pad = 0;
@ -212,17 +253,17 @@ static void get_cmd(struct fd_ringbuffer *ring,
static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring) static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring)
{ {
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
return fd_bo_map(msm_ring->ring_bo); return fd_bo_map(msm_ring->cmd->ring_bo);
} }
static uint32_t find_next_reloc_idx(struct msm_ringbuffer *msm_ring, static uint32_t find_next_reloc_idx(struct msm_cmd *msm_cmd,
uint32_t start, uint32_t offset) uint32_t start, uint32_t offset)
{ {
uint32_t i; uint32_t i;
/* a binary search would be more clever.. */ /* a binary search would be more clever.. */
for (i = start; i < msm_ring->submit.nr_relocs; i++) { for (i = start; i < msm_cmd->nr_relocs; i++) {
struct drm_msm_gem_submit_reloc *reloc = &msm_ring->submit.relocs[i]; struct drm_msm_gem_submit_reloc *reloc = &msm_cmd->relocs[i];
if (reloc->submit_offset >= offset) if (reloc->submit_offset >= offset)
return i; return i;
} }
@ -243,21 +284,20 @@ static void flush_reset(struct fd_ringbuffer *ring)
/* for each of the cmd buffers, clear their reloc's: */ /* for each of the cmd buffers, clear their reloc's: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) { for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]); struct msm_cmd *target_cmd = msm_ring->cmds[i];
target_ring->submit.nr_relocs = 0; target_cmd->nr_relocs = 0;
} }
msm_ring->submit.nr_relocs = 0; msm_ring->cmd->nr_relocs = 0;
msm_ring->submit.nr_cmds = 0; msm_ring->submit.nr_cmds = 0;
msm_ring->submit.nr_bos = 0; msm_ring->submit.nr_bos = 0;
msm_ring->nr_rings = 0; msm_ring->nr_cmds = 0;
msm_ring->nr_bos = 0; msm_ring->nr_bos = 0;
} }
static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start) static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start)
{ {
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
struct fd_bo *ring_bo = msm_ring->ring_bo;
struct drm_msm_gem_submit req = { struct drm_msm_gem_submit req = {
.pipe = to_msm_pipe(ring->pipe)->pipe, .pipe = to_msm_pipe(ring->pipe)->pipe,
}; };
@ -267,7 +307,7 @@ static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start
submit_offset = offset_bytes(last_start, ring->start); submit_offset = offset_bytes(last_start, ring->start);
size = offset_bytes(ring->cur, last_start); size = offset_bytes(ring->cur, last_start);
get_cmd(ring, ring, ring_bo, submit_offset, size, MSM_SUBMIT_CMD_BUF); get_cmd(ring, msm_ring->cmd, submit_offset, size, MSM_SUBMIT_CMD_BUF);
/* needs to be after get_cmd() as that could create bos/cmds table: */ /* needs to be after get_cmd() as that could create bos/cmds table: */
req.bos = VOID2U64(msm_ring->submit.bos), req.bos = VOID2U64(msm_ring->submit.bos),
@ -278,10 +318,10 @@ static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start
/* for each of the cmd's fix up their reloc's: */ /* for each of the cmd's fix up their reloc's: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 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_cmd *cmd = &msm_ring->submit.cmds[i];
struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]); struct msm_cmd *msm_cmd = msm_ring->cmds[i];
uint32_t a = find_next_reloc_idx(target_ring, 0, cmd->submit_offset); uint32_t a = find_next_reloc_idx(msm_cmd, 0, cmd->submit_offset);
uint32_t b = find_next_reloc_idx(target_ring, a, cmd->submit_offset + cmd->size); uint32_t b = find_next_reloc_idx(msm_cmd, a, cmd->submit_offset + cmd->size);
cmd->relocs = VOID2U64(&target_ring->submit.relocs[a]); cmd->relocs = VOID2U64(&msm_cmd->relocs[a]);
cmd->nr_relocs = (b > a) ? b - a : 0; cmd->nr_relocs = (b > a) ? b - a : 0;
} }
@ -308,12 +348,11 @@ static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start
r->reloc_idx, r->reloc_offset); r->reloc_idx, r->reloc_offset);
} }
} }
} else { } else if (!ret) {
/* update timestamp on all rings associated with submit: */ /* update timestamp on all rings associated with submit: */
for (i = 0; i < msm_ring->submit.nr_cmds; i++) { for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
struct fd_ringbuffer *target_ring = msm_ring->rings[i]; struct msm_cmd *msm_cmd = msm_ring->cmds[i];
if (!ret) msm_cmd->ring->last_timestamp = req.fence;
target_ring->last_timestamp = req.fence;
} }
} }
@ -334,10 +373,10 @@ static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring,
struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring; struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
struct msm_bo *msm_bo = to_msm_bo(r->bo); struct msm_bo *msm_bo = to_msm_bo(r->bo);
struct drm_msm_gem_submit_reloc *reloc; struct drm_msm_gem_submit_reloc *reloc;
uint32_t idx = APPEND(&msm_ring->submit, relocs); uint32_t idx = APPEND(msm_ring->cmd, relocs);
uint32_t addr; uint32_t addr;
reloc = &msm_ring->submit.relocs[idx]; reloc = &msm_ring->cmd->relocs[idx];
reloc->reloc_idx = bo2idx(parent, r->bo, r->flags); reloc->reloc_idx = bo2idx(parent, r->bo, r->flags);
reloc->reloc_offset = r->offset; reloc->reloc_offset = r->offset;
@ -357,13 +396,12 @@ static void msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
struct fd_ringbuffer *target, struct fd_ringbuffer *target,
uint32_t submit_offset, uint32_t size) uint32_t submit_offset, uint32_t size)
{ {
struct fd_bo *target_bo = to_msm_ringbuffer(target)->ring_bo; struct msm_cmd *cmd = to_msm_ringbuffer(target)->cmd;
get_cmd(ring, target, target_bo, submit_offset, size, get_cmd(ring, cmd, submit_offset, size, MSM_SUBMIT_CMD_IB_TARGET_BUF);
MSM_SUBMIT_CMD_IB_TARGET_BUF);
msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){ msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){
.bo = target_bo, .bo = cmd->ring_bo,
.flags = FD_RELOC_READ, .flags = FD_RELOC_READ,
.offset = submit_offset, .offset = submit_offset,
}); });
@ -372,13 +410,12 @@ static void msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring) static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring)
{ {
struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
if (msm_ring->ring_bo) if (msm_ring->cmd)
ring_bo_del(ring->pipe->dev, msm_ring->ring_bo); ring_cmd_del(msm_ring->cmd);
free(msm_ring->submit.relocs);
free(msm_ring->submit.cmds); free(msm_ring->submit.cmds);
free(msm_ring->submit.bos); free(msm_ring->submit.bos);
free(msm_ring->bos); free(msm_ring->bos);
free(msm_ring->rings); free(msm_ring->cmds);
free(msm_ring); free(msm_ring);
} }
@ -405,10 +442,11 @@ drm_private struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe,
ring = &msm_ring->base; ring = &msm_ring->base;
ring->funcs = &funcs; ring->funcs = &funcs;
ring->pipe = pipe; /* needed in ring_cmd_new() */
msm_ring->ring_bo = ring_bo_new(pipe->dev, size); msm_ring->cmd = ring_cmd_new(ring, size);
if (!msm_ring->ring_bo) { if (!msm_ring->cmd) {
ERROR_MSG("ringbuffer allocation failed"); ERROR_MSG("command buffer allocation failed");
goto fail; goto fail;
} }