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From: Felix Kuehling <Felix.Kuehling@amd.com>
To: amd-gfx@lists.freedesktop.org
Cc: Stanley.Yang@amd.com, Hawking.Zhang@amd.com
Subject: [PATCH 1/1] drm/amdkfd: Use a new capability bit for SRAM ECC
Date: Thu, 10 Sep 2020 15:06:53 -0400	[thread overview]
Message-ID: <20200910190653.31339-1-Felix.Kuehling@amd.com> (raw)

Existing, buggy user mode breaks when SRAM ECC is correctly reported as
"enabled". To avoid breaking existing user mode, deprecate that bit and
leave it as 0. Define a new bit to report the actual SRAM ECC mode that
new, correct user mode can use in the future.

Fixes: 7ec177bdcfc1 ("drm/amdkfd: fix set kfd node ras properties value")
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
index 326d9b26b7aa..690cc561955c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
@@ -47,13 +47,14 @@
 #define HSA_CAP_DOORBELL_TYPE_2_0		0x2
 #define HSA_CAP_AQL_QUEUE_DOUBLE_MAP		0x00004000
 
-#define HSA_CAP_SRAM_EDCSUPPORTED		0x00080000
+#define HSA_CAP_RESERVED_WAS_SRAM_EDCSUPPORTED	0x00080000 /* Old buggy user mode depends on this being O */
 #define HSA_CAP_MEM_EDCSUPPORTED		0x00100000
 #define HSA_CAP_RASEVENTNOTIFY			0x00200000
 #define HSA_CAP_ASIC_REVISION_MASK		0x03c00000
 #define HSA_CAP_ASIC_REVISION_SHIFT		22
+#define HSA_CAP_SRAM_EDCSUPPORTED		0x04000000
 
-#define HSA_CAP_RESERVED			0xfc078000
+#define HSA_CAP_RESERVED			0xf80f8000
 
 struct kfd_node_properties {
 	uint64_t hive_id;
-- 
2.17.1

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             reply	other threads:[~2020-09-10 19:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-10 19:06 Felix Kuehling [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-02-26 22:45 [PATCH 1/1] drm/amdkfd: Use a new capability bit for SRAM ECC Felix Kuehling
2021-03-03 16:27 ` Russell, Kent

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