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.")
(cherry picked from commit a91b158bd9)

src/broadcom/compiler/vir.c

@@ -774,7 +774,8 @@ uint64_t *v3d_compile_vs(const struct v3d_compiler *compiler,
         int sector_size = 16 * sizeof(uint32_t) * 8;
         int vpm_size_in_sectors = c->devinfo->vpm_size / sector_size;
         int half_vpm = vpm_size_in_sectors / 2;
-        int vpm_output_batches = half_vpm - prog_data->vpm_input_size;
+        int vpm_output_sectors = half_vpm - prog_data->vpm_input_size;
+        int vpm_output_batches = vpm_output_sectors / prog_data->vpm_output_size;
         assert(vpm_output_batches >= 2);
         prog_data->vcm_cache_size = CLAMP(vpm_output_batches - 1, 2, 4);
 

src/gallium/drivers/v3d/v3d_screen.c

@@ -585,7 +585,7 @@ v3d_get_device_info(struct v3d_screen *screen)
         uint32_t minor = (ident1.value >> 0) & 0xf;
         screen->devinfo.ver = major * 10 + minor;
 
-        screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 1024;
+        screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 8192;
 
         switch (screen->devinfo.ver) {
         case 33: