linux-kernel - [PATCH 2/3] habanalabs: clear sobs and monitors in context switch

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Date:   Thu, 30 May 2019 08:46:02 +0000
From:   Dalit Ben Zoor <dbenzoor@...ana.ai>
To:     "oded.gabbay@...il.com" <oded.gabbay@...il.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] habanalabs: clear sobs and monitors in context switch

On context switch we need to ensure that each user is not be affected by
other user, so we need to clear sync objects and monitors in context
switch instead of in restore_phase_topology function.

Signed-off-by: Dalit Ben Zoor <dbenzoor@...ana.ai>
---
 drivers/misc/habanalabs/goya/goya.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index e0fc511acaec..87859c55b4b8 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -3919,6 +3919,11 @@ void goya_update_eq_ci(struct hl_device *hdev, u32 val)
 }
 
 void goya_restore_phase_topology(struct hl_device *hdev)
+{
+
+}
+
+static void goya_clear_sm_regs(struct hl_device *hdev)
 {
 	int i, num_of_sob_in_longs, num_of_mon_in_longs;
 
@@ -4569,6 +4574,8 @@ int goya_context_switch(struct hl_device *hdev, u32 asid)
 	WREG32(mmTPC_PLL_CLK_RLX_0, 0x200020);
 	goya_mmu_prepare(hdev, asid);
 
+	goya_clear_sm_regs(hdev);
+
 	return 0;
 }
 
-- 
2.17.1