From: Dave Airlie <airlied@redhat.com>
Date: Wed, 29 Aug 2018 03:52:15 +0000 (+1000)
Subject: ac/radeonsi: fix CIK copy max size
X-Git-Tag: upstream/19.0.0~2816
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2c1f249f2b61be50222411bc0d41c095004232ed;p=platform%2Fupstream%2Fmesa.git

ac/radeonsi: fix CIK copy max size

While adding transfer queues to radv, I started writing some tests,
the first test I wrote fell over copying a buffer larger than this
limit.

Checked AMDVLK and found the correct limit.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
---

diff --git a/src/amd/common/sid.h b/src/amd/common/sid.h
index d696c01..851a823 100644
--- a/src/amd/common/sid.h
+++ b/src/amd/common/sid.h
@@ -9145,7 +9145,9 @@
 #define        SDMA_TS_SUB_OPCODE_GET_LOCAL_TIMESTAMP     0x1
 #define        SDMA_TS_SUB_OPCODE_GET_GLOBAL_TIMESTAMP    0x2
 #define    CIK_SDMA_PACKET_SRBM_WRITE              0xe
-#define    CIK_SDMA_COPY_MAX_SIZE                  0x3fffe0
+/* There is apparently an undocumented HW "feature" that
+   prevents the HW from copying past 256 bytes of (1 << 22) */
+#define    CIK_SDMA_COPY_MAX_SIZE                  0x3fff00
 
 enum amd_cmp_class_flags {
 	S_NAN = 1 << 0,        // Signaling NaN