linux-kernel - [PATCH 5/5] habanalabs/gaudi2: assigning PQFs for ARC f/w in PDMA

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Date:   Sun, 21 Aug 2022 11:28:23 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Rajarama Manjukody Bhat <rmbhat@...ana.ai>
Subject: [PATCH 5/5] habanalabs/gaudi2: assigning PQFs for ARC f/w in PDMA

From: Rajarama Manjukody Bhat <rmbhat@...ana.ai>

Assigning 3 PQFs in PDMA1 and 2 PQFs in PDMA0 for ARC firmware usage.

Signed-off-by: Rajarama Manjukody Bhat <rmbhat@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/gaudi2/gaudi2.c       | 13 +++++++++----
 drivers/misc/habanalabs/gaudi2/gaudi2_masks.h |  8 +++++++-
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2.c b/drivers/misc/habanalabs/gaudi2/gaudi2.c
index fa806e5b6680..c907e0fbf182 100644
--- a/drivers/misc/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/misc/habanalabs/gaudi2/gaudi2.c
@@ -4175,11 +4175,15 @@ static void gaudi2_init_qman_common(struct hl_device *hdev, u32 reg_base,
 	WREG32(reg_base + QM_GLBL_CFG2_OFFSET, 0);
 
 	/* Enable the QMAN channel.
-	 * PDMA1 QMAN configuration is different, as we do not allow user to
-	 * access CP2/3, it is reserved for the ARC usage.
+	 * PDMA QMAN configuration is different, as we do not allow user to
+	 * access some of the CPs.
+	 * PDMA0: CP2/3 are reserved for the ARC usage.
+	 * PDMA1: CP1/2/3 are reserved for the ARC usage.
 	 */
 	if (reg_base == gaudi2_qm_blocks_bases[GAUDI2_QUEUE_ID_PDMA_1_0])
 		WREG32(reg_base + QM_GLBL_CFG0_OFFSET, PDMA1_QMAN_ENABLE);
+	else if (reg_base == gaudi2_qm_blocks_bases[GAUDI2_QUEUE_ID_PDMA_0_0])
+		WREG32(reg_base + QM_GLBL_CFG0_OFFSET, PDMA0_QMAN_ENABLE);
 	else
 		WREG32(reg_base + QM_GLBL_CFG0_OFFSET, QMAN_ENABLE);
 }
@@ -5580,10 +5584,11 @@ static bool gaudi2_is_queue_enabled(struct hl_device *hdev, u32 hw_queue_id)
 	u64 hw_test_cap_bit = 0;
 
 	switch (hw_queue_id) {
-	case GAUDI2_QUEUE_ID_PDMA_0_0 ... GAUDI2_QUEUE_ID_PDMA_1_1:
+	case GAUDI2_QUEUE_ID_PDMA_0_0:
+	case GAUDI2_QUEUE_ID_PDMA_0_1:
+	case GAUDI2_QUEUE_ID_PDMA_1_0:
 		hw_cap_mask = HW_CAP_PDMA_MASK;
 		break;
-
 	case GAUDI2_QUEUE_ID_DCORE0_EDMA_0_0...GAUDI2_QUEUE_ID_DCORE0_EDMA_1_3:
 		hw_test_cap_bit = HW_CAP_EDMA_SHIFT +
 			((hw_queue_id - GAUDI2_QUEUE_ID_DCORE0_EDMA_0_0) >> 2);
diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2_masks.h b/drivers/misc/habanalabs/gaudi2/gaudi2_masks.h
index eed16d642a5a..0239d118abc5 100644
--- a/drivers/misc/habanalabs/gaudi2/gaudi2_masks.h
+++ b/drivers/misc/habanalabs/gaudi2/gaudi2_masks.h
@@ -51,12 +51,18 @@
 	(0x1F << PDMA0_QM_GLBL_CFG0_CP_EN_SHIFT)  | \
 	(0x1 << PDMA0_QM_GLBL_CFG0_ARC_CQF_EN_SHIFT))
 
-#define PDMA1_QMAN_ENABLE	\
+#define PDMA0_QMAN_ENABLE	\
 	((0x3 << PDMA0_QM_GLBL_CFG0_PQF_EN_SHIFT) | \
 	(0x1F << PDMA0_QM_GLBL_CFG0_CQF_EN_SHIFT) | \
 	(0x1F << PDMA0_QM_GLBL_CFG0_CP_EN_SHIFT)  | \
 	(0x1 << PDMA0_QM_GLBL_CFG0_ARC_CQF_EN_SHIFT))
 
+#define PDMA1_QMAN_ENABLE	\
+	((0x1 << PDMA0_QM_GLBL_CFG0_PQF_EN_SHIFT) | \
+	(0x1F << PDMA0_QM_GLBL_CFG0_CQF_EN_SHIFT) | \
+	(0x1F << PDMA0_QM_GLBL_CFG0_CP_EN_SHIFT)  | \
+	(0x1 << PDMA0_QM_GLBL_CFG0_ARC_CQF_EN_SHIFT))
+
 /* QM_IDLE_MASK is valid for all engines QM idle check */
 #define QM_IDLE_MASK	(DCORE0_EDMA0_QM_GLBL_STS0_PQF_IDLE_MASK | \
 			DCORE0_EDMA0_QM_GLBL_STS0_CQF_IDLE_MASK | \
-- 
2.25.1