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756f7b99895404bc7d7ce0cfcd84044cc21a799f
third_party_mesa3d/src/gallium/drivers/panfrost/pan_resource.c
Tomeu Vizoso 756f7b9989 panfrost: Add backend targeting the DRM driver 
This backend interacts with the new DRM driver for Midgard GPUs which is
currently in development.

When using this backend, Panfrost has roughly on-par functionality as
when using the non-DRM driver from Arm.

Alyssa Rosenzweig: To do so, we implement additional routines for
runtime GPU version detection and fencing. We cleanup some duplicate
code interfering with the new driver. We fix a long-standing memory leak
which is aggravated on the new driver. Finally, we implement BO
import/export in a way compatible with the new driver. These changes are
squashed to preserve bisectability given the hard-to-track ABI shifts in
the nondrm module

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
2019-03-10 19:09:23 +00:00

605 lines
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/**************************************************************************
*
* Copyright 2008 VMware, Inc.
* Copyright 2014 Broadcom
* Copyright 2018 Alyssa Rosenzweig
* All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include <xf86drm.h>
#include <fcntl.h>
#include "drm-uapi/drm_fourcc.h"
#include "state_tracker/winsys_handle.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_surface.h"
#include "util/u_transfer.h"
#include "util/u_transfer_helper.h"
#include "pan_context.h"
#include "pan_screen.h"
#include "pan_resource.h"
#include "pan_swizzle.h"
static struct pipe_resource *
panfrost_resource_from_handle(struct pipe_screen *pscreen,
const struct pipe_resource *templat,
struct winsys_handle *whandle,
unsigned usage)
{
struct panfrost_screen *screen = pan_screen(pscreen);
struct panfrost_resource *rsc;
struct pipe_resource *prsc;
assert(whandle->type == WINSYS_HANDLE_TYPE_FD);
rsc = CALLOC_STRUCT(panfrost_resource);
if (!rsc)
return NULL;
prsc = &rsc->base;
*prsc = *templat;
pipe_reference_init(&prsc->reference, 1);
prsc->screen = pscreen;
rsc->bo = screen->driver->import_bo(screen, whandle);
if (screen->ro) {
rsc->scanout =
renderonly_create_gpu_import_for_resource(prsc, screen->ro, NULL);
/* failure is expected in some cases.. */
}
return prsc;
}
static boolean
panfrost_resource_get_handle(struct pipe_screen *pscreen,
struct pipe_context *ctx,
struct pipe_resource *pt,
struct winsys_handle *handle,
unsigned usage)
{
struct panfrost_screen *screen = pan_screen(pscreen);
struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
struct renderonly_scanout *scanout = rsrc->scanout;
int bytes_per_pixel = util_format_get_blocksize(rsrc->base.format);
int stride = bytes_per_pixel * rsrc->base.width0; /* TODO: Alignment? */
handle->stride = stride;
handle->modifier = DRM_FORMAT_MOD_INVALID;
if (handle->type == WINSYS_HANDLE_TYPE_SHARED) {
return FALSE;
} else if (handle->type == WINSYS_HANDLE_TYPE_KMS) {
if (renderonly_get_handle(scanout, handle))
return TRUE;
handle->handle = rsrc->bo->gem_handle;
return TRUE;
} else if (handle->type == WINSYS_HANDLE_TYPE_FD) {
if (scanout) {
struct drm_prime_handle args = {
.handle = scanout->handle,
.flags = DRM_CLOEXEC,
};
int ret = drmIoctl(screen->ro->kms_fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
if (ret == -1)
return FALSE;
handle->handle = args.fd;
return TRUE;
} else
return screen->driver->export_bo(screen, rsrc->bo->gem_handle, handle);
}
return FALSE;
}
static void
panfrost_flush_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
{
//fprintf(stderr, "TODO %s\n", __func__);
}
static void
panfrost_blit(struct pipe_context *pipe,
const struct pipe_blit_info *info)
{
/* STUB */
printf("Skipping blit XXX\n");
return;
}
static struct pipe_surface *
panfrost_create_surface(struct pipe_context *pipe,
struct pipe_resource *pt,
const struct pipe_surface *surf_tmpl)
{
struct pipe_surface *ps = NULL;
ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
pipe_reference_init(&ps->reference, 1);
pipe_resource_reference(&ps->texture, pt);
ps->context = pipe;
ps->format = surf_tmpl->format;
if (pt->target != PIPE_BUFFER) {
assert(surf_tmpl->u.tex.level <= pt->last_level);
ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
ps->u.tex.level = surf_tmpl->u.tex.level;
ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
} else {
/* setting width as number of elements should get us correct renderbuffer width */
ps->width = surf_tmpl->u.buf.last_element - surf_tmpl->u.buf.first_element + 1;
ps->height = pt->height0;
ps->u.buf.first_element = surf_tmpl->u.buf.first_element;
ps->u.buf.last_element = surf_tmpl->u.buf.last_element;
assert(ps->u.buf.first_element <= ps->u.buf.last_element);
assert(ps->u.buf.last_element < ps->width);
}
}
return ps;
}
static void
panfrost_surface_destroy(struct pipe_context *pipe,
struct pipe_surface *surf)
{
assert(surf->texture);
pipe_resource_reference(&surf->texture, NULL);
free(surf);
}
static struct panfrost_bo *
panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
{
struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
/* Calculate the size of the bo */
int bytes_per_pixel = util_format_get_blocksize(template->format);
int stride = bytes_per_pixel * template->width0; /* TODO: Alignment? */
size_t sz = stride;
if (template->height0) sz *= template->height0;
if (template->depth0) sz *= template->depth0;
/* Tiling textures is almost always faster, unless we only use it once */
bo->tiled = (template->usage != PIPE_USAGE_STREAM) && (template->bind & PIPE_BIND_SAMPLER_VIEW);
if (bo->tiled) {
/* For tiled, we don't map directly, so just malloc any old buffer */
for (int l = 0; l < (template->last_level + 1); ++l) {
bo->cpu[l] = malloc(sz);
sz >>= 2;
}
} else {
/* But for linear, we can! */
struct pb_slab_entry *entry = pb_slab_alloc(&screen->slabs, sz, HEAP_TEXTURE);
struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
struct panfrost_memory *backing = (struct panfrost_memory *) entry->slab;
bo->entry[0] = p_entry;
bo->cpu[0] = backing->cpu + p_entry->offset;
bo->gpu[0] = backing->gpu + p_entry->offset;
/* TODO: Mipmap */
}
return bo;
}
static struct pipe_resource *
panfrost_resource_create(struct pipe_screen *screen,
const struct pipe_resource *template)
{
struct panfrost_resource *so = CALLOC_STRUCT(panfrost_resource);
struct panfrost_screen *pscreen = (struct panfrost_screen *) screen;
so->base = *template;
so->base.screen = screen;
pipe_reference_init(&so->base.reference, 1);
/* Make sure we're familiar */
switch (template->target) {
case PIPE_BUFFER:
case PIPE_TEXTURE_1D:
case PIPE_TEXTURE_2D:
case PIPE_TEXTURE_3D:
case PIPE_TEXTURE_RECT:
break;
default:
fprintf(stderr, "Unknown texture target %d\n", template->target);
assert(0);
}
if ((template->bind & PIPE_BIND_RENDER_TARGET) || (template->bind & PIPE_BIND_DEPTH_STENCIL)) {
if (template->bind & PIPE_BIND_DISPLAY_TARGET ||
template->bind & PIPE_BIND_SCANOUT ||
template->bind & PIPE_BIND_SHARED) {
struct pipe_resource scanout_templat = *template;
struct renderonly_scanout *scanout;
struct winsys_handle handle;
/* TODO: align width0 and height0? */
scanout = renderonly_scanout_for_resource(&scanout_templat,
pscreen->ro, &handle);
if (!scanout)
return NULL;
assert(handle.type == WINSYS_HANDLE_TYPE_FD);
/* TODO: handle modifiers? */
so = pan_resource(screen->resource_from_handle(screen, template,
&handle,
PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE));
close(handle.handle);
if (!so)
return NULL;
so->scanout = scanout;
pscreen->display_target = so;
} else {
so->bo = panfrost_create_bo(pscreen, template);
}
} else {
so->bo = panfrost_create_bo(pscreen, template);
}
return (struct pipe_resource *)so;
}
static void
panfrost_destroy_bo(struct panfrost_screen *screen, struct panfrost_bo *pbo)
{
struct panfrost_bo *bo = (struct panfrost_bo *)pbo;
for (int l = 0; l < MAX_MIP_LEVELS; ++l) {
if (bo->entry[l] != NULL) {
/* Most allocations have an entry to free */
bo->entry[l]->freed = true;
pb_slab_free(&screen->slabs, &bo->entry[l]->base);
}
}
if (bo->tiled) {
/* Tiled has a malloc'd CPU, so just plain ol' free needed */
for (int l = 0; l < MAX_MIP_LEVELS; ++l) {
free(bo->cpu[l]);
}
}
if (bo->has_afbc) {
/* TODO */
printf("--leaking afbc (%d bytes)--\n", bo->afbc_metadata_size);
}
if (bo->has_checksum) {
/* TODO */
printf("--leaking checksum (%zd bytes)--\n", bo->checksum_slab.size);
}
if (bo->imported) {
screen->driver->free_imported_bo(screen, bo);
}
}
static void
panfrost_resource_destroy(struct pipe_screen *screen,
struct pipe_resource *pt)
{
struct panfrost_screen *pscreen = pan_screen(screen);
struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
if (rsrc->scanout)
renderonly_scanout_destroy(rsrc->scanout, pscreen->ro);
if (rsrc->bo)
panfrost_destroy_bo(pscreen, rsrc->bo);
FREE(rsrc);
}
static uint8_t *
panfrost_map_bo(struct panfrost_context *ctx, struct pipe_transfer *transfer)
{
struct panfrost_bo *bo = (struct panfrost_bo *)pan_resource(transfer->resource)->bo;
/* If non-zero level, it's a mipmapped resource and needs to be treated as such */
bo->is_mipmap |= transfer->level;
if (transfer->usage & PIPE_TRANSFER_MAP_DIRECTLY && bo->tiled) {
/* We cannot directly map tiled textures */
return NULL;
}
if (transfer->resource->bind & PIPE_BIND_DEPTH_STENCIL) {
/* Mipmapped readpixels?! */
assert(transfer->level == 0);
/* Set the CPU mapping to that of the depth/stencil buffer in memory, untiled */
bo->cpu[transfer->level] = ctx->depth_stencil_buffer.cpu;
}
return bo->cpu[transfer->level];
}
static void *
panfrost_transfer_map(struct pipe_context *pctx,
struct pipe_resource *resource,
unsigned level,
unsigned usage, /* a combination of PIPE_TRANSFER_x */
const struct pipe_box *box,
struct pipe_transfer **out_transfer)
{
struct panfrost_context *ctx = pan_context(pctx);
int bytes_per_pixel = util_format_get_blocksize(resource->format);
int stride = bytes_per_pixel * resource->width0; /* TODO: Alignment? */
uint8_t *cpu;
struct pipe_transfer *transfer = CALLOC_STRUCT(pipe_transfer);
transfer->level = level;
transfer->usage = usage;
transfer->box = *box;
transfer->stride = stride;
assert(!transfer->box.z);
pipe_resource_reference(&transfer->resource, resource);
*out_transfer = transfer;
if (resource->bind & PIPE_BIND_DISPLAY_TARGET ||
resource->bind & PIPE_BIND_SCANOUT ||
resource->bind & PIPE_BIND_SHARED) {
/* Mipmapped readpixels?! */
assert(level == 0);
/* Force a flush -- kill the pipeline */
panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
}
cpu = panfrost_map_bo(ctx, transfer);
if (cpu == NULL)
return NULL;
return cpu + transfer->box.x * bytes_per_pixel + transfer->box.y * stride;
}
static void
panfrost_tile_texture(struct panfrost_screen *screen, struct panfrost_resource *rsrc, int level)
{
struct panfrost_bo *bo = (struct panfrost_bo *)rsrc->bo;
int bytes_per_pixel = util_format_get_blocksize(rsrc->base.format);
int stride = bytes_per_pixel * rsrc->base.width0; /* TODO: Alignment? */
int width = rsrc->base.width0 >> level;
int height = rsrc->base.height0 >> level;
/* Estimate swizzled bitmap size. Slight overestimates are fine.
* Underestimates will result in memory corruption or worse. */
int swizzled_sz = panfrost_swizzled_size(width, height, bytes_per_pixel);
/* Save the entry. But if there was already an entry here (from a
* previous upload of the resource), free that one so we don't leak */
if (bo->entry[level] != NULL) {
bo->entry[level]->freed = true;
pb_slab_free(&screen->slabs, &bo->entry[level]->base);
}
/* Allocate the transfer given that known size but do not copy */
struct pb_slab_entry *entry = pb_slab_alloc(&screen->slabs, swizzled_sz, HEAP_TEXTURE);
struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
struct panfrost_memory *backing = (struct panfrost_memory *) entry->slab;
uint8_t *swizzled = backing->cpu + p_entry->offset;
bo->entry[level] = p_entry;
bo->gpu[level] = backing->gpu + p_entry->offset;
/* Run actual texture swizzle, writing directly to the mapped
* GPU chunk we allocated */
panfrost_texture_swizzle(width, height, bytes_per_pixel, stride, bo->cpu[level], swizzled);
}
static void
panfrost_unmap_bo(struct panfrost_context *ctx,
struct pipe_transfer *transfer)
{
struct panfrost_bo *bo = (struct panfrost_bo *)pan_resource(transfer->resource)->bo;
if (transfer->usage & PIPE_TRANSFER_WRITE) {
if (transfer->resource->target == PIPE_TEXTURE_2D) {
struct panfrost_resource *prsrc = (struct panfrost_resource *) transfer->resource;
/* Gallium thinks writeback happens here; instead, this is our cue to tile */
if (bo->has_afbc) {
printf("Warning: writes to afbc surface can't possibly work out well for you...\n");
} else if (bo->tiled) {
struct pipe_context *gallium = (struct pipe_context *) ctx;
struct panfrost_screen *screen = pan_screen(gallium->screen);
panfrost_tile_texture(screen, prsrc, transfer->level);
}
}
}
}
static void
panfrost_transfer_unmap(struct pipe_context *pctx,
struct pipe_transfer *transfer)
{
struct panfrost_context *ctx = pan_context(pctx);
panfrost_unmap_bo(ctx, transfer);
/* Derefence the resource */
pipe_resource_reference(&transfer->resource, NULL);
/* Transfer itself is CALLOCed at the moment */
free(transfer);
}
static struct pb_slab *
panfrost_slab_alloc(void *priv, unsigned heap, unsigned entry_size, unsigned group_index)
{
struct panfrost_screen *screen = (struct panfrost_screen *) priv;
struct panfrost_memory *mem = CALLOC_STRUCT(panfrost_memory);
size_t slab_size = (1 << (MAX_SLAB_ENTRY_SIZE + 1));
mem->slab.num_entries = slab_size / entry_size;
mem->slab.num_free = mem->slab.num_entries;
LIST_INITHEAD(&mem->slab.free);
for (unsigned i = 0; i < mem->slab.num_entries; ++i) {
/* Create a slab entry */
struct panfrost_memory_entry *entry = CALLOC_STRUCT(panfrost_memory_entry);
entry->offset = entry_size * i;
entry->base.slab = &mem->slab;
entry->base.group_index = group_index;
LIST_ADDTAIL(&entry->base.head, &mem->slab.free);
}
/* Actually allocate the memory from kernel-space. Mapped, same_va, no
* special flags */
screen->driver->allocate_slab(screen, mem, slab_size / 4096, true, 0, 0, 0);
return &mem->slab;
}
static bool
panfrost_slab_can_reclaim(void *priv, struct pb_slab_entry *entry)
{
struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
return p_entry->freed;
}
static void
panfrost_slab_free(void *priv, struct pb_slab *slab)
{
struct panfrost_memory *mem = (struct panfrost_memory *) slab;
struct panfrost_screen *screen = (struct panfrost_screen *) priv;
screen->driver->free_slab(screen, mem);
}
static void
panfrost_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
{
//fprintf(stderr, "TODO %s\n", __func__);
}
static enum pipe_format
panfrost_resource_get_internal_format(struct pipe_resource *prsrc)
{
return prsrc->format;
}
static void
panfrost_resource_set_stencil(struct pipe_resource *prsrc,
struct pipe_resource *stencil)
{
pan_resource(prsrc)->separate_stencil = pan_resource(stencil);
}
static struct pipe_resource *
panfrost_resource_get_stencil(struct pipe_resource *prsrc)
{
return &pan_resource(prsrc)->separate_stencil->base;
}
static const struct u_transfer_vtbl transfer_vtbl = {
.resource_create = panfrost_resource_create,
.resource_destroy = panfrost_resource_destroy,
.transfer_map = panfrost_transfer_map,
.transfer_unmap = panfrost_transfer_unmap,
.transfer_flush_region = u_default_transfer_flush_region,
.get_internal_format = panfrost_resource_get_internal_format,
.set_stencil = panfrost_resource_set_stencil,
.get_stencil = panfrost_resource_get_stencil,
};
void
panfrost_resource_screen_init(struct panfrost_screen *pscreen)
{
//pscreen->base.resource_create_with_modifiers =
// panfrost_resource_create_with_modifiers;
pscreen->base.resource_create = u_transfer_helper_resource_create;
pscreen->base.resource_destroy = u_transfer_helper_resource_destroy;
pscreen->base.resource_from_handle = panfrost_resource_from_handle;
pscreen->base.resource_get_handle = panfrost_resource_get_handle;
pscreen->base.transfer_helper = u_transfer_helper_create(&transfer_vtbl,
true, false,
true, true);
pb_slabs_init(&pscreen->slabs,
MIN_SLAB_ENTRY_SIZE,
MAX_SLAB_ENTRY_SIZE,
3, /* Number of heaps */
pscreen,
panfrost_slab_can_reclaim,
panfrost_slab_alloc,
panfrost_slab_free);
}
void
panfrost_resource_context_init(struct pipe_context *pctx)
{
pctx->transfer_map = u_transfer_helper_transfer_map;
pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
pctx->transfer_unmap = u_transfer_helper_transfer_unmap;
pctx->buffer_subdata = u_default_buffer_subdata;
pctx->create_surface = panfrost_create_surface;
pctx->surface_destroy = panfrost_surface_destroy;
pctx->resource_copy_region = util_resource_copy_region;
pctx->blit = panfrost_blit;
//pctx->generate_mipmap = panfrost_generate_mipmap;
pctx->flush_resource = panfrost_flush_resource;
pctx->invalidate_resource = panfrost_invalidate_resource;
pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
pctx->buffer_subdata = u_default_buffer_subdata;
pctx->texture_subdata = u_default_texture_subdata;
}
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