linux-kernel - [PATCH 3/7] habanalabs/gaudi2: get f/w reset status register dynamically

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Date:   Sun, 18 Sep 2022 14:37:13 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     farah kassabri <fkassabri@...ana.ai>
Subject: [PATCH 3/7] habanalabs/gaudi2: get f/w reset status register dynamically

From: farah kassabri <fkassabri@...ana.ai>

Get the firmware reset status address from the dynamic registers
we read from the firmware instead of using a define.

Signed-off-by: farah kassabri <fkassabri@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/gaudi2/gaudi2.c             | 5 ++++-
 drivers/misc/habanalabs/include/common/hl_boot_if.h | 4 +++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2.c b/drivers/misc/habanalabs/gaudi2/gaudi2.c
index 6ed9b3ce16dd..b95eab4c237c 100644
--- a/drivers/misc/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/misc/habanalabs/gaudi2/gaudi2.c
@@ -5439,7 +5439,10 @@ static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms
 
 	if (!driver_performs_reset) {
 		/* set SP to indicate reset request sent to FW */
-		WREG32(mmCPU_RST_STATUS_TO_HOST, CPU_RST_STATUS_NA);
+		if (dyn_regs->cpu_rst_status)
+			WREG32(le32_to_cpu(dyn_regs->cpu_rst_status), CPU_RST_STATUS_NA);
+		else
+			WREG32(mmCPU_RST_STATUS_TO_HOST, CPU_RST_STATUS_NA);
 
 		WREG32(le32_to_cpu(dyn_regs->gic_host_soft_rst_irq),
 			gaudi2_irq_map_table[GAUDI2_EVENT_CPU_SOFT_RESET].cpu_id);
diff --git a/drivers/misc/habanalabs/include/common/hl_boot_if.h b/drivers/misc/habanalabs/include/common/hl_boot_if.h
index 2e45be5de4fe..e0ea51cc7475 100644
--- a/drivers/misc/habanalabs/include/common/hl_boot_if.h
+++ b/drivers/misc/habanalabs/include/common/hl_boot_if.h
@@ -431,7 +431,9 @@ struct cpu_dyn_regs {
 	__le32 gic_host_ints_irq;
 	__le32 gic_host_soft_rst_irq;
 	__le32 gic_rot_qm_irq_ctrl;
-	__le32 reserved1[22];		/* reserve for future use */
+	__le32 cpu_rst_status;
+	__le32 eng_arc_irq_ctrl;
+	__le32 reserved1[20];		/* reserve for future use */
 };
 
 /* TODO: remove the desc magic after the code is updated to use message */
-- 
2.25.1