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panfrost: Mark buffers as PANFROST_BO_HEAP

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What we call GROWABLE in Mesa corresponds to the HEAP BO flag in the
kernel. These buffers cannot be memory mapped in the CPU side at the
moment, so make sure they are also marked INVISIBLE.

This allows us to allocate a big heap upfront (16MB) without actually
reserving space unless it's needed.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Tomeu Vizoso 2019-07-31 16:29:25 +02:00
parent 19afd41e65
commit 7c8434889d
1 changed files with 6 additions and 0 deletions
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6
src/gallium/drivers/panfrost/pan_drm.c
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@ -91,10 +91,16 @@ panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
/* To maximize BO cache usage, don't allocate tiny BOs */
size = MAX2(size, 4096);
/* GROWABLE BOs cannot be mmapped */
if (flags & PAN_ALLOCATE_GROWABLE)
assert(flags & PAN_ALLOCATE_INVISIBLE);
unsigned translated_flags = 0;
if (screen->kernel_version->version_major > 1 ||
screen->kernel_version->version_minor >= 1) {
if (flags & PAN_ALLOCATE_GROWABLE)
translated_flags |= PANFROST_BO_HEAP;
if (!(flags & PAN_ALLOCATE_EXECUTE))
translated_flags |= PANFROST_BO_NOEXEC;
}