[v9,01/22] net: hns: Add reset function support for RoCE driver

Message ID	1464795484-77395-2-git-send-email-oulijun@huawei.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <linux-rdma-owner@kernel.org> From: Lijun Ou <oulijun@huawei.com> To: <dledford@redhat.com>, <sean.hefty@intel.com>, <hal.rosenstock@gmail.com>, <davem@davemloft.net>, <jeffrey.t.kirsher@intel.com>, <jiri@mellanox.com>, <ogerlitz@mellanox.com> CC: <linux-rdma@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>, <gongyangming@huawei.com>, <xiaokun@huawei.com>, <tangchaofei@huawei.com>, <oulijun@huawei.com>, <haifeng.wei@huawei.com>, <yisen.zhuang@huawei.com>, <yankejian@huawei.com>, <charles.chenxin@huawei.com>, <linuxarm@huawei.com> Subject: [PATCH v9 01/22] net: hns: Add reset function support for RoCE driver Date: Wed, 1 Jun 2016 23:37:43 +0800 Message-ID: <1464795484-77395-2-git-send-email-oulijun@huawei.com> In-Reply-To: <1464795484-77395-1-git-send-email-oulijun@huawei.com> References: <1464795484-77395-1-git-send-email-oulijun@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c index 1c2ddb2..0c4a87c 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/mfd/syscon.h> +#include <linux/of_platform.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> @@ -2685,6 +2686,89 @@ static struct platform_driver g_dsaf_driver = { module_platform_driver(g_dsaf_driver); +/** + * hns_dsaf_roce_reset - reset dsaf and roce + * @dsaf_fwnode: Pointer to framework node for the dasf + * @enable: false - request reset , true - drop reset + * retuen 0 - success , negative -fail + */ +int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool enable) +{ + struct dsaf_device *dsaf_dev; + struct platform_device *pdev; + unsigned int mp; + unsigned int sl; + unsigned int credit; + int i; + const u32 port_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = { + {DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0}, + {DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0}, + {DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0}, + {DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0}, + {DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1}, + {DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1}, + {DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1}, + {DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1}, + }; + const u32 sl_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = { + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0}, + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1}, + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2}, + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3}, + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0}, + {DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1}, + {DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2}, + {DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3}, + }; + + if (!is_of_node(dsaf_fwnode)) { + pr_err("hisi_dsaf: Only support DT node!\n"); + return -EINVAL; + } + pdev = of_find_device_by_node(to_of_node(dsaf_fwnode)); + dsaf_dev = dev_get_drvdata(&pdev->dev); + if (AE_IS_VER1(dsaf_dev->dsaf_ver)) { + dev_err(dsaf_dev->dev, "%s v1 chip do not support roce!\n", + dsaf_dev->ae_dev.name); + return -ENODEV; + } + + if (!enable) { + /* Reset rocee-channels in dsaf and rocee */ + hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK, false); + hns_dsaf_roce_srst(dsaf_dev, false); + } else { + /* Configure dsaf tx roce correspond to port map and sl map */ + mp = dsaf_read_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG); + for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++) + dsaf_set_field(mp, 7 << i * 3, i * 3, + port_map[i][DSAF_ROCE_6PORT_MODE]); + dsaf_set_field(mp, 3 << i * 3, i * 3, 0); + dsaf_write_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG, mp); + + sl = dsaf_read_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG); + for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++) + dsaf_set_field(sl, 3 << i * 2, i * 2, + sl_map[i][DSAF_ROCE_6PORT_MODE]); + dsaf_write_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG, sl); + + /* De-reset rocee-channels in dsaf and rocee */ + hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK, true); + msleep(20); + hns_dsaf_roce_srst(dsaf_dev, true); + + /* Eanble dsaf channel rocee credit */ + credit = dsaf_read_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG); + dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 0); + dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit); + + dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 1); + dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit); + } + return 0; +} +EXPORT_SYMBOL(hns_dsaf_roce_reset); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Huawei Tech. Co., Ltd."); MODULE_DESCRIPTION("HNS DSAF driver"); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h index f0502ba..e00b585 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h @@ -40,6 +40,32 @@ struct hns_mac_cb; #define DSAF_DUMP_REGS_NUM 504 #define DSAF_STATIC_NUM 28 +#define DSAF_ROCE_CREDIT_CHN 8 +#define DSAF_ROCE_CHAN_MODE 3 + +enum dsaf_roce_port_mode { + DSAF_ROCE_6PORT_MODE, + DSAF_ROCE_4PORT_MODE, + DSAF_ROCE_2PORT_MODE, + DSAF_ROCE_CHAN_MODE_NUM, +}; + +enum dsaf_roce_port_num { + DSAF_ROCE_PORT_0 = 0, + DSAF_ROCE_PORT_1 = 1, + DSAF_ROCE_PORT_2 = 2, + DSAF_ROCE_PORT_3 = 3, + DSAF_ROCE_PORT_4 = 4, + DSAF_ROCE_PORT_5 = 5, +}; + +enum dsaf_roce_qos_sl { + DSAF_ROCE_SL_0 = 0, + DSAF_ROCE_SL_1 = 1, + DSAF_ROCE_SL_2 = 2, + DSAF_ROCE_SL_3 = 3, +}; + #define DSAF_STATS_READ(p, offset) (*((u64 *)((u8 *)(p) + (offset)))) #define HNS_DSAF_IS_DEBUG(dev) (dev->dsaf_mode == DSAF_MODE_DISABLE_SP) @@ -388,7 +414,7 @@ int hns_dsaf_get_mac_entry_by_index( u16 entry_index, struct dsaf_drv_mac_multi_dest_entry *mac_entry); -void hns_dsaf_rst(struct dsaf_device *dsaf_dev, u32 val); +void hns_dsaf_rst(struct dsaf_device *dsaf_dev, bool enable); void hns_ppe_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val); @@ -396,6 +422,10 @@ void hns_ppe_com_srst(struct ppe_common_cb *ppe_common, u32 val); void hns_dsaf_fix_mac_mode(struct hns_mac_cb *mac_cb); +void hns_dsaf_srst_chns(struct dsaf_device *dsaf_dev, u32 msk, bool enable); + +void hns_dsaf_roce_srst(struct dsaf_device *dsaf_dev, bool enable); + int hns_dsaf_ae_init(struct dsaf_device *dsaf_dev); void hns_dsaf_ae_uninit(struct dsaf_device *dsaf_dev); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c index a837bb9..1fd41a7a3 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c @@ -109,21 +109,25 @@ int cpld_set_led_id(struct hns_mac_cb *mac_cb, #define RESET_REQ_OR_DREQ 1 -void hns_dsaf_rst(struct dsaf_device *dsaf_dev, u32 val) +void hns_dsaf_rst(struct dsaf_device *dsaf_dev, bool enable) { u32 xbar_reg_addr; u32 nt_reg_addr; - if (!val) { - xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_REQ_REG; - nt_reg_addr = DSAF_SUB_SC_NT_RESET_REQ_REG; - } else { - xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_DREQ_REG; - nt_reg_addr = DSAF_SUB_SC_NT_RESET_DREQ_REG; - } + if (AE_IS_VER1(dsaf_dev->dsaf_ver)) { + if (!enable) { + xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_REQ_REG; + nt_reg_addr = DSAF_SUB_SC_NT_RESET_REQ_REG; + } else { + xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_DREQ_REG; + nt_reg_addr = DSAF_SUB_SC_NT_RESET_DREQ_REG; + } dsaf_write_sub(dsaf_dev, xbar_reg_addr, RESET_REQ_OR_DREQ); dsaf_write_sub(dsaf_dev, nt_reg_addr, RESET_REQ_OR_DREQ); + } else { + hns_dsaf_srst_chns(dsaf_dev, 0xfffff, enable); + } } void hns_dsaf_xge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val) @@ -165,6 +169,43 @@ void hns_dsaf_xge_core_srst_by_port(struct dsaf_device *dsaf_dev, dsaf_write_sub(dsaf_dev, reg_addr, reg_val); } +/** + * hns_dsaf_srst_chns - reset dsaf channels + * @dsaf_dev: dsaf device struct pointer + * @msk: xbar channels mask value: + * bit0-5 for xge0-5 + * bit6-11 for ppe0-5 + * bit12-17 for roce0-5 + * bit18-19 for com/dfx + * @enable: false - request reset , true - drop reset + */ +void hns_dsaf_srst_chns(struct dsaf_device *dsaf_dev, u32 msk, bool enable) +{ + u32 reg_addr; + + if (!enable) + reg_addr = DSAF_SUB_SC_DSAF_RESET_REQ_REG; + else + reg_addr = DSAF_SUB_SC_DSAF_RESET_DREQ_REG; + + dsaf_write_sub(dsaf_dev, reg_addr, msk); +} + +void hns_dsaf_roce_srst(struct dsaf_device *dsaf_dev, bool enable) +{ + if (!enable) { + dsaf_write_reg(dsaf_dev->sc_base, + DSAF_SUB_SC_ROCEE_RESET_REQ_REG, 1); + } else { + dsaf_write_sub(dsaf_dev, + DSAF_SUB_SC_ROCEE_CLK_DIS_REG, 1); + dsaf_write_sub(dsaf_dev, + DSAF_SUB_SC_ROCEE_RESET_DREQ_REG, 1); + msleep(20); + dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_ROCEE_CLK_EN_REG, 1); + } +} + void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val) { u32 reg_val_1; diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h index 7c3b510..268383b 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h @@ -32,6 +32,7 @@ #define DSAFV2_SBM_NUM 8 #define DSAFV2_SBM_XGE_CHN 6 #define DSAFV2_SBM_PPE_CHN 1 +#define DSAFV2_SBM_ROCE_CHN 1 #define DASFV2_ROCEE_CRD_NUM 8 #define DSAF_VOQ_NUM DSAF_NODE_NUM @@ -77,6 +78,12 @@ #define DSAF_SUB_SC_PPE_RESET_DREQ_REG 0xA4C #define DSAF_SUB_SC_RCB_PPE_COM_RESET_REQ_REG 0xA88 #define DSAF_SUB_SC_RCB_PPE_COM_RESET_DREQ_REG 0xA8C +#define DSAF_SUB_SC_DSAF_RESET_REQ_REG 0xAA8 +#define DSAF_SUB_SC_ROCEE_RESET_REQ_REG 0xA50 +#define DSAF_SUB_SC_DSAF_RESET_DREQ_REG 0xAAC +#define DSAF_SUB_SC_ROCEE_CLK_DIS_REG 0x32C +#define DSAF_SUB_SC_ROCEE_RESET_DREQ_REG 0xA54 +#define DSAF_SUB_SC_ROCEE_CLK_EN_REG 0x328 #define DSAF_SUB_SC_LIGHT_MODULE_DETECT_EN_REG 0x2060 #define DSAF_SUB_SC_TCAM_MBIST_EN_REG 0x2300 #define DSAF_SUB_SC_DSAF_CLK_ST_REG 0x5300 @@ -133,6 +140,8 @@ #define DSAF_ROCEE_INT_STS_0_REG 0x200 #define DSAFV2_SERDES_LBK_0_REG 0x220 #define DSAF_PAUSE_CFG_REG 0x240 +#define DSAF_ROCE_PORT_MAP_REG 0x2A0 +#define DSAF_ROCE_SL_MAP_REG 0x2A4 #define DSAF_PPE_QID_CFG_0_REG 0x300 #define DSAF_SW_PORT_TYPE_0_REG 0x320 #define DSAF_STP_PORT_TYPE_0_REG 0x340 @@ -175,7 +184,8 @@ #define DSAF_SBM_BP_CFG_2_XGE_REG_0_REG 0x200C #define DSAF_SBM_BP_CFG_2_PPE_REG_0_REG 0x230C #define DSAF_SBM_BP_CFG_2_ROCEE_REG_0_REG 0x260C -#define DSAFV2_SBM_BP_CFG_2_ROCEE_REG_0_REG 0x238C +#define DSAF_SBM_ROCEE_CFG_REG_REG 0x2380 +#define DSAFV2_SBM_BP_CFG_2_ROCEE_REG_0_REG 0x238C #define DSAF_SBM_FREE_CNT_0_0_REG 0x2010 #define DSAF_SBM_FREE_CNT_1_0_REG 0x2014 #define DSAF_SBM_BP_CNT_0_0_REG 0x2018 @@ -791,6 +801,9 @@ #define DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_S 9 #define DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_M (((1ULL << 9) - 1) << 9) +#define DSAF_CHNS_MASK 0x3f000 +#define DSAF_SBM_ROCEE_CFG_CRD_EN_B 2 + #define DSAF_TBL_TCAM_ADDR_S 0 #define DSAF_TBL_TCAM_ADDR_M ((1ULL << 9) - 1)

[v9,01/22] net: hns: Add reset function support for RoCE driver

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