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Wed, 10 Jan 2024 11:43:06 GMT Received: from akronite-sh-dev02.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 10 Jan 2024 03:42:56 -0800 From: Luo Jie To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , Subject: [PATCH net-next 12/20] net: ethernet: qualcomm: Add PPE RSS hash config Date: Wed, 10 Jan 2024 19:40:24 +0800 Message-ID: <20240110114033.32575-13-quic_luoj@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240110114033.32575-1-quic_luoj@quicinc.com> References: <20240110114033.32575-1-quic_luoj@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: aY60UDB6Ph4YU7Pmb7VFzLEnZH5e3sWL X-Proofpoint-GUID: aY60UDB6Ph4YU7Pmb7VFzLEnZH5e3sWL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 spamscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 impostorscore=0 bulkscore=0 suspectscore=0 phishscore=0 priorityscore=1501 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401100096 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787704139955371719 X-GMAIL-MSGID: 1787704139955371719 PPE RSS hash is generated by the configured seed based on the packet content, which is used to select queue and can also be passed to EDMA RX descriptor. Signed-off-by: Luo Jie --- drivers/net/ethernet/qualcomm/ppe/ppe.c | 53 ++++++++++- drivers/net/ethernet/qualcomm/ppe/ppe_ops.c | 97 ++++++++++++++++++++ drivers/net/ethernet/qualcomm/ppe/ppe_ops.h | 22 +++++ drivers/net/ethernet/qualcomm/ppe/ppe_regs.h | 44 +++++++++ 4 files changed, 215 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe.c b/drivers/net/ethernet/qualcomm/ppe/ppe.c index bce0a9137c9f..746ef42fea5d 100644 --- a/drivers/net/ethernet/qualcomm/ppe/ppe.c +++ b/drivers/net/ethernet/qualcomm/ppe/ppe.c @@ -1172,6 +1172,53 @@ static int ppe_port_ctrl_init(struct ppe_device *ppe_dev) return 0; } +static int ppe_rss_hash_init(struct ppe_device *ppe_dev) +{ + const struct ppe_queue_ops *ppe_queue_ops; + struct ppe_rss_hash_cfg hash_cfg; + int i, ret; + u16 fins[5] = {0x205, 0x264, 0x227, 0x245, 0x201}; + u8 ips[4] = {0x13, 0xb, 0x13, 0xb}; + + ppe_queue_ops = ppe_queue_config_ops_get(); + if (!ppe_queue_ops->rss_hash_config_set) + return -EINVAL; + + hash_cfg.hash_seed = get_random_u32(); + hash_cfg.hash_mask = 0xfff; + hash_cfg.hash_fragment_mode = false; + + i = 0; + while (i < ARRAY_SIZE(fins)) { + hash_cfg.hash_fin_inner[i] = fins[i] & 0x1f; + hash_cfg.hash_fin_outer[i] = fins[i] >> 5; + i++; + } + + hash_cfg.hash_protocol_mix = 0x13; + hash_cfg.hash_dport_mix = 0xb; + hash_cfg.hash_sport_mix = 0x13; + hash_cfg.hash_sip_mix[0] = 0x13; + hash_cfg.hash_dip_mix[0] = 0xb; + + ret = ppe_queue_ops->rss_hash_config_set(ppe_dev, + PPE_RSS_HASH_MODE_IPV4, + hash_cfg); + if (ret) + return ret; + + i = 0; + while (i < ARRAY_SIZE(ips)) { + hash_cfg.hash_sip_mix[i] = ips[i]; + hash_cfg.hash_dip_mix[i] = ips[i]; + i++; + } + + return ppe_queue_ops->rss_hash_config_set(ppe_dev, + PPE_RSS_HASH_MODE_IPV6, + hash_cfg); +} + static int ppe_dev_hw_init(struct ppe_device *ppe_dev) { int ret; @@ -1184,7 +1231,11 @@ static int ppe_dev_hw_init(struct ppe_device *ppe_dev) if (ret) return ret; - return ppe_port_ctrl_init(ppe_dev); + ret = ppe_port_ctrl_init(ppe_dev); + if (ret) + return ret; + + return ppe_rss_hash_init(ppe_dev); } static int qcom_ppe_probe(struct platform_device *pdev) diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe_ops.c b/drivers/net/ethernet/qualcomm/ppe/ppe_ops.c index b017983e7cbf..0398a36d680a 100644 --- a/drivers/net/ethernet/qualcomm/ppe/ppe_ops.c +++ b/drivers/net/ethernet/qualcomm/ppe/ppe_ops.c @@ -333,6 +333,102 @@ int ppe_counter_set(struct ppe_device *ppe_dev, int port, bool enable) FIELD_PREP(PPE_PORT_EG_VLAN_TX_COUNTING_EN, enable)); } +static int ppe_rss_hash_config_set(struct ppe_device *ppe_dev, + int mode, + struct ppe_rss_hash_cfg cfg) +{ + u32 val; + int i; + + if (mode & PPE_RSS_HASH_MODE_IPV4) { + val = FIELD_PREP(PPE_RSS_HASH_MASK_IPV4_HASH_MASK, cfg.hash_mask) | + FIELD_PREP(PPE_RSS_HASH_MASK_IPV4_FRAGMENT, + cfg.hash_fragment_mode); + ppe_write(ppe_dev, PPE_RSS_HASH_MASK_IPV4, val); + + val = FIELD_PREP(PPE_RSS_HASH_SEED_IPV4_VAL, cfg.hash_seed); + ppe_write(ppe_dev, PPE_RSS_HASH_SEED_IPV4, val); + + for (i = 0; i < PPE_RSS_HASH_MIX_IPV4_NUM; i++) { + switch (i) { + case 0: + val = FIELD_PREP(PPE_RSS_HASH_MIX_IPV4_VAL, + cfg.hash_sip_mix[0]); + break; + case 1: + val = FIELD_PREP(PPE_RSS_HASH_MIX_IPV4_VAL, + cfg.hash_dip_mix[0]); + break; + case 2: + val = FIELD_PREP(PPE_RSS_HASH_MIX_IPV4_VAL, + cfg.hash_protocol_mix); + break; + case 3: + val = FIELD_PREP(PPE_RSS_HASH_MIX_IPV4_VAL, + cfg.hash_dport_mix); + break; + case 4: + val = FIELD_PREP(PPE_RSS_HASH_MIX_IPV4_VAL, + cfg.hash_sport_mix); + break; + default: + break; + } + ppe_write(ppe_dev, PPE_RSS_HASH_MIX_IPV4 + i * PPE_RSS_HASH_MIX_IPV4_INC, + val); + } + + for (i = 0; i < PPE_RSS_HASH_MIX_IPV4_NUM; i++) { + val = FIELD_PREP(PPE_RSS_HASH_FIN_IPV4_INNER, cfg.hash_fin_inner[i]) | + FIELD_PREP(PPE_RSS_HASH_FIN_IPV4_OUTER, + cfg.hash_fin_outer[i]); + ppe_write(ppe_dev, PPE_RSS_HASH_FIN_IPV4 + i * PPE_RSS_HASH_FIN_IPV4_INC, + val); + } + } + + if (mode & PPE_RSS_HASH_MODE_IPV6) { + val = FIELD_PREP(PPE_RSS_HASH_MASK_HASH_MASK, cfg.hash_mask) | + FIELD_PREP(PPE_RSS_HASH_MASK_FRAGMENT, cfg.hash_fragment_mode); + ppe_write(ppe_dev, PPE_RSS_HASH_MASK, val); + + val = FIELD_PREP(PPE_RSS_HASH_SEED_VAL, cfg.hash_seed); + ppe_write(ppe_dev, PPE_RSS_HASH_SEED, val); + + for (i = 0; i < PPE_RSS_HASH_MIX_NUM; i++) { + switch (i) { + case 0 ... 3: + val = FIELD_PREP(PPE_RSS_HASH_MIX_VAL, cfg.hash_sip_mix[i]); + break; + case 4 ... 7: + val = FIELD_PREP(PPE_RSS_HASH_MIX_VAL, cfg.hash_dip_mix[i - 4]); + break; + case 8: + val = FIELD_PREP(PPE_RSS_HASH_MIX_VAL, cfg.hash_protocol_mix); + break; + case 9: + val = FIELD_PREP(PPE_RSS_HASH_MIX_VAL, cfg.hash_dport_mix); + break; + case 10: + val = FIELD_PREP(PPE_RSS_HASH_MIX_VAL, cfg.hash_sport_mix); + break; + default: + break; + } + ppe_write(ppe_dev, PPE_RSS_HASH_MIX + i * PPE_RSS_HASH_MIX_INC, val); + } + + for (i = 0; i < PPE_RSS_HASH_FIN_NUM; i++) { + val = FIELD_PREP(PPE_RSS_HASH_FIN_INNER, cfg.hash_fin_inner[i]) | + FIELD_PREP(PPE_RSS_HASH_FIN_OUTER, cfg.hash_fin_outer[i]); + + ppe_write(ppe_dev, PPE_RSS_HASH_FIN + i * PPE_RSS_HASH_FIN_INC, val); + } + } + + return 0; +} + static const struct ppe_queue_ops qcom_ppe_queue_config_ops = { .queue_scheduler_set = ppe_queue_scheduler_set, .queue_scheduler_get = ppe_queue_scheduler_get, @@ -340,6 +436,7 @@ static const struct ppe_queue_ops qcom_ppe_queue_config_ops = { .queue_ucast_base_get = ppe_queue_ucast_base_get, .queue_ucast_pri_class_set = ppe_queue_ucast_pri_class_set, .queue_ucast_hash_class_set = ppe_queue_ucast_hash_class_set, + .rss_hash_config_set = ppe_rss_hash_config_set, }; const struct ppe_queue_ops *ppe_queue_config_ops_get(void) diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe_ops.h b/drivers/net/ethernet/qualcomm/ppe/ppe_ops.h index ab64a760b60b..da0f37323042 100644 --- a/drivers/net/ethernet/qualcomm/ppe/ppe_ops.h +++ b/drivers/net/ethernet/qualcomm/ppe/ppe_ops.h @@ -12,6 +12,8 @@ #define PPE_QUEUE_PRI_MAX 16 #define PPE_QUEUE_HASH_MAX 256 +#define PPE_RSS_HASH_MODE_IPV4 BIT(0) +#define PPE_RSS_HASH_MODE_IPV6 BIT(1) /* PPE hardware QoS configurations used to dispatch the packet passed * through PPE, the scheduler supports DRR(deficit round robin with the @@ -148,6 +150,23 @@ struct ppe_servcode_cfg { int offset_sel; }; +/* PPE RSS hash can be configured to generate the hash value based on + * 5 tuples of packet, the generated hash value is used to decides the + * final queue ID. + */ +struct ppe_rss_hash_cfg { + u32 hash_mask; + bool hash_fragment_mode; + u32 hash_seed; + u8 hash_sip_mix[4]; + u8 hash_dip_mix[4]; + u8 hash_protocol_mix; + u8 hash_sport_mix; + u8 hash_dport_mix; + u8 hash_fin_inner[5]; + u8 hash_fin_outer[5]; +}; + /* The operations are used to configure the PPE queue related resource */ struct ppe_queue_ops { int (*queue_scheduler_set)(struct ppe_device *ppe_dev, @@ -176,6 +195,9 @@ struct ppe_queue_ops { int profile_id, int rss_hash, int class_offset); + int (*rss_hash_config_set)(struct ppe_device *ppe_dev, + int mode, + struct ppe_rss_hash_cfg hash_cfg); }; const struct ppe_queue_ops *ppe_queue_config_ops_get(void); diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe_regs.h b/drivers/net/ethernet/qualcomm/ppe/ppe_regs.h index 3e61de54f921..b42089599cc9 100644 --- a/drivers/net/ethernet/qualcomm/ppe/ppe_regs.h +++ b/drivers/net/ethernet/qualcomm/ppe/ppe_regs.h @@ -19,6 +19,50 @@ #define PPE_RX_FIFO_CFG_INC 4 #define PPE_RX_FIFO_CFG_THRSH GENMASK(2, 0) +#define PPE_RSS_HASH_MASK 0xb4318 +#define PPE_RSS_HASH_MASK_NUM 1 +#define PPE_RSS_HASH_MASK_INC 4 +#define PPE_RSS_HASH_MASK_HASH_MASK GENMASK(20, 0) +#define PPE_RSS_HASH_MASK_FRAGMENT BIT(28) + +#define PPE_RSS_HASH_SEED 0xb431c +#define PPE_RSS_HASH_SEED_NUM 1 +#define PPE_RSS_HASH_SEED_INC 4 +#define PPE_RSS_HASH_SEED_VAL GENMASK(31, 0) + +#define PPE_RSS_HASH_MIX 0xb4320 +#define PPE_RSS_HASH_MIX_NUM 11 +#define PPE_RSS_HASH_MIX_INC 4 +#define PPE_RSS_HASH_MIX_VAL GENMASK(4, 0) + +#define PPE_RSS_HASH_FIN 0xb4350 +#define PPE_RSS_HASH_FIN_NUM 5 +#define PPE_RSS_HASH_FIN_INC 4 +#define PPE_RSS_HASH_FIN_INNER GENMASK(4, 0) +#define PPE_RSS_HASH_FIN_OUTER GENMASK(9, 5) + +#define PPE_RSS_HASH_MASK_IPV4 0xb4380 +#define PPE_RSS_HASH_MASK_IPV4_NUM 1 +#define PPE_RSS_HASH_MASK_IPV4_INC 4 +#define PPE_RSS_HASH_MASK_IPV4_HASH_MASK GENMASK(20, 0) +#define PPE_RSS_HASH_MASK_IPV4_FRAGMENT BIT(28) + +#define PPE_RSS_HASH_SEED_IPV4 0xb4384 +#define PPE_RSS_HASH_SEED_IPV4_NUM 1 +#define PPE_RSS_HASH_SEED_IPV4_INC 4 +#define PPE_RSS_HASH_SEED_IPV4_VAL GENMASK(31, 0) + +#define PPE_RSS_HASH_MIX_IPV4 0xb4390 +#define PPE_RSS_HASH_MIX_IPV4_NUM 5 +#define PPE_RSS_HASH_MIX_IPV4_INC 4 +#define PPE_RSS_HASH_MIX_IPV4_VAL GENMASK(4, 0) + +#define PPE_RSS_HASH_FIN_IPV4 0xb43b0 +#define PPE_RSS_HASH_FIN_IPV4_NUM 5 +#define PPE_RSS_HASH_FIN_IPV4_INC 4 +#define PPE_RSS_HASH_FIN_IPV4_INNER GENMASK(4, 0) +#define PPE_RSS_HASH_FIN_IPV4_OUTER GENMASK(9, 5) + #define PPE_BM_TDM_CFG_TBL 0xc000 #define PPE_BM_TDM_CFG_TBL_NUM 128 #define PPE_BM_TDM_CFG_TBL_INC 0x10