v3d: Fix setup of the VCM cache size.
There were two bugs working together to make things mostly work: I wasn't
dividing the VPM output size available by the size of a batch (vertex),
but I also had the size of the VPM reduced by a factor of 8.
Fixes dEQP-GLES3.functional.vertex_array_objects.all_attributes and it
seems also my intermittent varying failures.
Fixes: 1561e4984e
("v3d: Emit the VCM_CACHE_SIZE packet.")
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@ -774,7 +774,8 @@ uint64_t *v3d_compile_vs(const struct v3d_compiler *compiler,
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int sector_size = 16 * sizeof(uint32_t) * 8;
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int vpm_size_in_sectors = c->devinfo->vpm_size / sector_size;
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int half_vpm = vpm_size_in_sectors / 2;
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int vpm_output_batches = half_vpm - prog_data->vpm_input_size;
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int vpm_output_sectors = half_vpm - prog_data->vpm_input_size;
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int vpm_output_batches = vpm_output_sectors / prog_data->vpm_output_size;
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assert(vpm_output_batches >= 2);
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prog_data->vcm_cache_size = CLAMP(vpm_output_batches - 1, 2, 4);
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@ -438,7 +438,7 @@ v3d_get_device_info(struct v3d_screen *screen)
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uint32_t minor = (ident1.value >> 0) & 0xf;
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screen->devinfo.ver = major * 10 + minor;
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screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 1024;
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screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 8192;
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switch (screen->devinfo.ver) {
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case 33:
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