[PATCH net-next 07/11] net: ethernet: qualcomm: ppe: Add IPQ5424 QM configuration

[Luo Jie]

Multicast queues are dedicated per PPE port. IPQ5424 has only 3 physical
PPE ports, versus IPQ9574's 6 PPE ports, so multicast queues 284 to 299 are
not available on IPQ5424, and 2010 buffers are assigned to the shared
group0 buffer pool, instead of IPQ9574's 2000.

Signed-off-by: Luo Jie <jie.luo@xxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/qualcomm/ppe/ppe_config.c | 36 ++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe_config.c b/drivers/net/ethernet/qualcomm/ppe/ppe_config.c
index 3afa57119323..dec8eed77253 100644
--- a/drivers/net/ethernet/qualcomm/ppe/ppe_config.c
+++ b/drivers/net/ethernet/qualcomm/ppe/ppe_config.c
@@ -314,6 +314,37 @@ static const struct ppe_qm_queue_config ipq9574_ppe_qm_queue_config[] = {
 	},
 };
 
+/* Multicast queues are dedicated per PPE port. IPQ5424 has only 3 physical
+ * PPE ports, versus IPQ9574's 6 PPE ports, so multicast queues 284 to 299
+ * are not available on IPQ5424, and the buffer pool assigned to the general
+ * 'group0' is larger here, 2010 versus IPQ9574's 2000.
+ */
+static const int ipq5424_ppe_qm_group_config = 2010;
+
+/* Default QM settings for unicast and multicast queues for IPQ5424. */
+static const struct ppe_qm_queue_config ipq5424_ppe_qm_queue_config[] = {
+	{
+		/* QM settings for unicast queues 0 to 255. */
+		.queue_start	= 0,
+		.queue_end	= 255,
+		.prealloc_buf	= 0,
+		.ceil		= 1200,
+		.weight		= 7,
+		.resume_offset	= 36,
+		.dynamic	= true,
+	},
+	{
+		/* QM settings for multicast queues 256 to 283. */
+		.queue_start	= 256,
+		.queue_end	= 283,
+		.prealloc_buf	= 0,
+		.ceil		= 250,
+		.weight		= 0,
+		.resume_offset	= 36,
+		.dynamic	= false,
+	},
+};
+
 /* PPE scheduler configuration for BM includes multiple entries. Each entry
  * indicates the primary port to be assigned the buffers for the ingress or
  * to release the buffers for the egress. Backup port ID will be used when
@@ -1547,6 +1578,11 @@ static int ppe_config_qm(struct ppe_device *ppe_dev)
 		queue_cfg = ipq9574_ppe_qm_queue_config;
 		queue_cfg_count = ARRAY_SIZE(ipq9574_ppe_qm_queue_config);
 		break;
+	case IPQ5424_PPE:
+		group_buffer_cfg = ipq5424_ppe_qm_group_config;
+		queue_cfg = ipq5424_ppe_qm_queue_config;
+		queue_cfg_count = ARRAY_SIZE(ipq5424_ppe_qm_queue_config);
+		break;
 	default:
 		dev_err(ppe_dev->dev, "Invalid PPE type %d\n", ppe_dev->type);
 		return -EINVAL;

-- 
2.43.0