From bc6f1afc79c0258dae7b082d9bf2f7ef8e9aadc3 Mon Sep 17 00:00:00 2001
From: Rob Clark <robdclark@chromium.org>
Date: Thu, 30 Jun 2022 08:53:11 -0700
Subject: [PATCH] freedreno: Add pkt4 assert

Add assert to catch places where we overflow max PKT4 size

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17317>
---
 src/freedreno/common/freedreno_pm4.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/freedreno/common/freedreno_pm4.h b/src/freedreno/common/freedreno_pm4.h
index 4320a5c8508..5a46c0a8124 100644
--- a/src/freedreno/common/freedreno_pm4.h
+++ b/src/freedreno/common/freedreno_pm4.h
@@ -71,6 +71,7 @@ pm4_pkt3_hdr(uint8_t opcode, uint16_t cnt)
 static inline uint32_t
 pm4_pkt4_hdr(uint16_t regindx, uint16_t cnt)
 {
+   assert(cnt < 0x7f);
    return CP_TYPE4_PKT | cnt | (pm4_odd_parity_bit(cnt) << 7) |
          ((regindx & 0x3ffff) << 8) |
          ((pm4_odd_parity_bit(regindx) << 27));