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<p style="margin-top:0;margin-bottom:0">Alternatively, we could cherry-pick the change to the doorbell ranges from Shaoyun. Might also be useful to leave a comment here about the doorbell range for vega20 sdma.</p>
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<p style="margin-top:0;margin-bottom:0">Alex<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Zhang, Hawking<br>
<b>Sent:</b> Tuesday, August 21, 2018 5:02:24 AM<br>
<b>To:</b> Quan, Evan; amd-gfx@lists.freedesktop.org<br>
<b>Cc:</b> Deucher, Alexander; Quan, Evan<br>
<b>Subject:</b> RE: [PATCH] drm/amdgpu: fix sdma doorbell range setting</font>
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<div class="PlainText">Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com><br>
<br>
Regards,<br>
Hawking<br>
-----Original Message-----<br>
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Evan Quan<br>
Sent: 2018年8月21日 16:21<br>
To: amd-gfx@lists.freedesktop.org<br>
Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Quan, Evan <Evan.Quan@amd.com>; Zhang, Hawking <Hawking.Zhang@amd.com><br>
Subject: [PATCH] drm/amdgpu: fix sdma doorbell range setting<br>
<br>
Use the old doorbell range setting until the driver is able to support more sdma queues.<br>
<br>
Change-Id: I80fc067fc64878d3c7dc3d38bbe1c6c94bec397f<br>
Signed-off-by: Evan Quan <evan.quan@amd.com><br>
---<br>
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 2 +-<br>
1 file changed, 1 insertion(+), 1 deletion(-)<br>
<br>
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c<br>
index 89ea92075b6b..2e65447637c6 100644<br>
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c<br>
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c<br>
@@ -76,7 +76,7 @@ static void nbio_v7_4_sdma_doorbell_range(struct amdgpu_device *adev, int instan<br>
<br>
if (use_doorbell) {<br>
doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);<br>
- doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 8);<br>
+ doorbell_range = REG_SET_FIELD(doorbell_range, <br>
+BIF_SDMA0_DOORBELL_RANGE, SIZE, 2);<br>
} else<br>
doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);<br>
<br>
--<br>
2.18.0<br>
<br>
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