panfrost: Query tiler features
We need the maximum levels to configure the hierarchy mask correctly. We should also respect the bin size... Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11733>
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@ -140,6 +140,16 @@ struct panfrost_format {
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unsigned bind;
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};
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/** Implementation-defined tiler features */
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struct panfrost_tiler_features {
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/** Number of bytes per tiler bin */
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unsigned bin_size;
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/** Maximum number of levels that may be simultaneously enabled.
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* Invariant: bitcount(hierarchy_mask) <= max_levels */
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unsigned max_levels;
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};
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struct panfrost_device {
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/* For ralloc */
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void *memctx;
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@ -151,6 +161,7 @@ struct panfrost_device {
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unsigned gpu_id;
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unsigned core_count;
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unsigned thread_tls_alloc;
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struct panfrost_tiler_features tiler_features;
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unsigned quirks;
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/* Table of formats, indexed by a PIPE format */
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@ -85,6 +85,20 @@ panfrost_query_gpu_revision(int fd)
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return panfrost_query_raw(fd, DRM_PANFROST_PARAM_GPU_REVISION, true, 0);
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}
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static struct panfrost_tiler_features
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panfrost_query_tiler_features(int fd)
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{
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/* Default value (2^9 bytes and 8 levels) to match old behaviour */
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uint32_t raw = panfrost_query_raw(fd, DRM_PANFROST_PARAM_TILER_FEATURES,
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false, 0x809);
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/* Bin size is log2 in the first byte, max levels in the second byte */
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return (struct panfrost_tiler_features) {
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.bin_size = (1 << (raw & BITFIELD_MASK(5))),
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.max_levels = (raw >> 8) & BITFIELD_MASK(4)
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};
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}
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static unsigned
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panfrost_query_core_count(int fd)
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{
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@ -236,6 +250,7 @@ panfrost_open_device(void *memctx, int fd, struct panfrost_device *dev)
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unsigned revision = panfrost_query_gpu_revision(fd);
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dev->quirks = panfrost_get_quirks(dev->gpu_id, revision);
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dev->compressed_formats = panfrost_query_compressed_formats(fd);
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dev->tiler_features = panfrost_query_tiler_features(fd);
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if (dev->quirks & HAS_SWIZZLES)
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dev->formats = panfrost_pipe_format_v6;
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