From a680f2f376fe70bad85f350059be995c9dc2a802 Mon Sep 17 00:00:00 2001 From: "Wei Hu(Xavier)" Date: Wed, 30 Aug 2017 17:23:05 +0800 Subject: [PATCH] RDMA/hns: Add mailbox's implementation for hip08 RoCE driver In hip08 SoC, the hardware implementation of mailbox command has changed with hip06 SoC. As a result, it adjusts the architecture of the command code and implements the interfaces of mailbox for hip08 SoC. Signed-off-by: Lijun Ou Signed-off-by: Shaobo Xu Signed-off-by: Wei Hu (Xavier) Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hns/hns_roce_cmd.c | 98 ++--------------------------- drivers/infiniband/hw/hns/hns_roce_common.h | 1 + drivers/infiniband/hw/hns/hns_roce_device.h | 5 +- drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 75 ++++++++++++++++++++++ drivers/infiniband/hw/hns/hns_roce_hw_v1.h | 5 ++ drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 84 +++++++++++++++++++++++++ drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 20 ++++++ 7 files changed, 195 insertions(+), 93 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_cmd.c b/drivers/infiniband/hw/hns/hns_roce_cmd.c index 67ad3e9..1085cb2 100644 --- a/drivers/infiniband/hw/hns/hns_roce_cmd.c +++ b/drivers/infiniband/hw/hns/hns_roce_cmd.c @@ -38,69 +38,7 @@ #define CMD_POLL_TOKEN 0xffff #define CMD_MAX_NUM 32 -#define STATUS_MASK 0xff #define CMD_TOKEN_MASK 0x1f -#define GO_BIT_TIMEOUT_MSECS 10000 - -enum { - HCR_TOKEN_OFFSET = 0x14, - HCR_STATUS_OFFSET = 0x18, - HCR_GO_BIT = 15, -}; - -static int cmd_pending(struct hns_roce_dev *hr_dev) -{ - u32 status = readl(hr_dev->cmd.hcr + HCR_TOKEN_OFFSET); - - return (!!(status & (1 << HCR_GO_BIT))); -} - -/* this function should be serialized with "hcr_mutex" */ -static int __hns_roce_cmd_mbox_post_hw(struct hns_roce_dev *hr_dev, - u64 in_param, u64 out_param, - u32 in_modifier, u8 op_modifier, u16 op, - u16 token, int event) -{ - struct hns_roce_cmdq *cmd = &hr_dev->cmd; - struct device *dev = &hr_dev->pdev->dev; - u32 __iomem *hcr = (u32 *)cmd->hcr; - int ret = -EAGAIN; - unsigned long end; - u32 val = 0; - - end = msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS) + jiffies; - while (cmd_pending(hr_dev)) { - if (time_after(jiffies, end)) { - dev_dbg(dev, "jiffies=%d end=%d\n", (int)jiffies, - (int)end); - goto out; - } - cond_resched(); - } - - roce_set_field(val, ROCEE_MB6_ROCEE_MB_CMD_M, ROCEE_MB6_ROCEE_MB_CMD_S, - op); - roce_set_field(val, ROCEE_MB6_ROCEE_MB_CMD_MDF_M, - ROCEE_MB6_ROCEE_MB_CMD_MDF_S, op_modifier); - roce_set_bit(val, ROCEE_MB6_ROCEE_MB_EVENT_S, event); - roce_set_bit(val, ROCEE_MB6_ROCEE_MB_HW_RUN_S, 1); - roce_set_field(val, ROCEE_MB6_ROCEE_MB_TOKEN_M, - ROCEE_MB6_ROCEE_MB_TOKEN_S, token); - - __raw_writeq(cpu_to_le64(in_param), hcr + 0); - __raw_writeq(cpu_to_le64(out_param), hcr + 2); - __raw_writel(cpu_to_le32(in_modifier), hcr + 4); - /* Memory barrier */ - wmb(); - - __raw_writel(cpu_to_le32(val), hcr + 5); - - mmiowb(); - ret = 0; - -out: - return ret; -} static int hns_roce_cmd_mbox_post_hw(struct hns_roce_dev *hr_dev, u64 in_param, u64 out_param, u32 in_modifier, @@ -108,12 +46,11 @@ static int hns_roce_cmd_mbox_post_hw(struct hns_roce_dev *hr_dev, u64 in_param, int event) { struct hns_roce_cmdq *cmd = &hr_dev->cmd; - int ret = -EAGAIN; + int ret; mutex_lock(&cmd->hcr_mutex); - ret = __hns_roce_cmd_mbox_post_hw(hr_dev, in_param, out_param, - in_modifier, op_modifier, op, token, - event); + ret = hr_dev->hw->post_mbox(hr_dev, in_param, out_param, in_modifier, + op_modifier, op, token, event); mutex_unlock(&cmd->hcr_mutex); return ret; @@ -126,9 +63,6 @@ static int __hns_roce_cmd_mbox_poll(struct hns_roce_dev *hr_dev, u64 in_param, unsigned long timeout) { struct device *dev = hr_dev->dev; - u8 __iomem *hcr = hr_dev->cmd.hcr; - unsigned long end = 0; - u32 status = 0; int ret; ret = hns_roce_cmd_mbox_post_hw(hr_dev, in_param, out_param, @@ -136,29 +70,10 @@ static int __hns_roce_cmd_mbox_poll(struct hns_roce_dev *hr_dev, u64 in_param, CMD_POLL_TOKEN, 0); if (ret) { dev_err(dev, "[cmd_poll]hns_roce_cmd_mbox_post_hw failed\n"); - goto out; - } - - end = msecs_to_jiffies(timeout) + jiffies; - while (cmd_pending(hr_dev) && time_before(jiffies, end)) - cond_resched(); - - if (cmd_pending(hr_dev)) { - dev_err(dev, "[cmd_poll]hw run cmd TIMEDOUT!\n"); - ret = -ETIMEDOUT; - goto out; + return ret; } - status = le32_to_cpu((__force __be32) - __raw_readl(hcr + HCR_STATUS_OFFSET)); - if ((status & STATUS_MASK) != 0x1) { - dev_err(dev, "mailbox status 0x%x!\n", status); - ret = -EBUSY; - goto out; - } - -out: - return ret; + return hr_dev->hw->chk_mbox(hr_dev, timeout); } static int hns_roce_cmd_mbox_poll(struct hns_roce_dev *hr_dev, u64 in_param, @@ -198,7 +113,7 @@ static int __hns_roce_cmd_mbox_wait(struct hns_roce_dev *hr_dev, u64 in_param, struct hns_roce_cmdq *cmd = &hr_dev->cmd; struct hns_roce_cmd_context *context; struct device *dev = hr_dev->dev; - int ret = 0; + int ret; spin_lock(&cmd->context_lock); WARN_ON(cmd->free_head < 0); @@ -280,7 +195,6 @@ int hns_roce_cmd_init(struct hns_roce_dev *hr_dev) hr_dev->cmd.use_events = 0; hr_dev->cmd.toggle = 1; hr_dev->cmd.max_cmds = CMD_MAX_NUM; - hr_dev->cmd.hcr = hr_dev->reg_base + ROCEE_MB1_REG; hr_dev->cmd.pool = dma_pool_create("hns_roce_cmd", dev, HNS_ROCE_MAILBOX_SIZE, HNS_ROCE_MAILBOX_SIZE, 0); diff --git a/drivers/infiniband/hw/hns/hns_roce_common.h b/drivers/infiniband/hw/hns/hns_roce_common.h index 94381c2..0c950f8 100644 --- a/drivers/infiniband/hw/hns/hns_roce_common.h +++ b/drivers/infiniband/hw/hns/hns_roce_common.h @@ -341,6 +341,7 @@ #define ROCEE_BT_CMD_L_REG 0x200 #define ROCEE_MB1_REG 0x210 +#define ROCEE_MB6_REG 0x224 #define ROCEE_DB_SQ_L_0_REG 0x230 #define ROCEE_DB_OTHERS_L_0_REG 0x238 #define ROCEE_QP1C_CFG0_0_REG 0x270 diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 8ec6d6e..7c58750 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -367,7 +367,6 @@ struct hns_roce_cmd_context { struct hns_roce_cmdq { struct dma_pool *pool; - u8 __iomem *hcr; struct mutex hcr_mutex; struct semaphore poll_sem; /* @@ -517,6 +516,10 @@ struct hns_roce_hw { int (*hw_profile)(struct hns_roce_dev *hr_dev); int (*hw_init)(struct hns_roce_dev *hr_dev); void (*hw_exit)(struct hns_roce_dev *hr_dev); + int (*post_mbox)(struct hns_roce_dev *hr_dev, u64 in_param, + u64 out_param, u32 in_modifier, u8 op_modifier, u16 op, + u16 token, int event); + int (*chk_mbox)(struct hns_roce_dev *hr_dev, unsigned long timeout); void (*set_gid)(struct hns_roce_dev *hr_dev, u8 port, int gid_index, union ib_gid *gid); void (*set_mac)(struct hns_roce_dev *hr_dev, u8 phy_port, u8 *addr); diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index 267e400..2bf2816 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -1619,6 +1619,79 @@ void hns_roce_v1_exit(struct hns_roce_dev *hr_dev) hns_roce_db_free(hr_dev); } +static int hns_roce_v1_cmd_pending(struct hns_roce_dev *hr_dev) +{ + u32 status = readl(hr_dev->reg_base + ROCEE_MB6_REG); + + return (!!(status & (1 << HCR_GO_BIT))); +} + +int hns_roce_v1_post_mbox(struct hns_roce_dev *hr_dev, u64 in_param, + u64 out_param, u32 in_modifier, u8 op_modifier, + u16 op, u16 token, int event) +{ + u32 *hcr = (u32 *)(hr_dev->reg_base + ROCEE_MB1_REG); + unsigned long end; + u32 val = 0; + + end = msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS) + jiffies; + while (hns_roce_v1_cmd_pending(hr_dev)) { + if (time_after(jiffies, end)) { + dev_err(hr_dev->dev, "jiffies=%d end=%d\n", + (int)jiffies, (int)end); + return -EAGAIN; + } + cond_resched(); + } + + roce_set_field(val, ROCEE_MB6_ROCEE_MB_CMD_M, ROCEE_MB6_ROCEE_MB_CMD_S, + op); + roce_set_field(val, ROCEE_MB6_ROCEE_MB_CMD_MDF_M, + ROCEE_MB6_ROCEE_MB_CMD_MDF_S, op_modifier); + roce_set_bit(val, ROCEE_MB6_ROCEE_MB_EVENT_S, event); + roce_set_bit(val, ROCEE_MB6_ROCEE_MB_HW_RUN_S, 1); + roce_set_field(val, ROCEE_MB6_ROCEE_MB_TOKEN_M, + ROCEE_MB6_ROCEE_MB_TOKEN_S, token); + + __raw_writeq(cpu_to_le64(in_param), hcr + 0); + __raw_writeq(cpu_to_le64(out_param), hcr + 2); + __raw_writel(cpu_to_le32(in_modifier), hcr + 4); + /* Memory barrier */ + wmb(); + + __raw_writel(cpu_to_le32(val), hcr + 5); + + mmiowb(); + + return 0; +} + +static int hns_roce_v1_chk_mbox(struct hns_roce_dev *hr_dev, + unsigned long timeout) +{ + u8 __iomem *hcr = hr_dev->reg_base + ROCEE_MB1_REG; + unsigned long end = 0; + u32 status = 0; + + end = msecs_to_jiffies(timeout) + jiffies; + while (hns_roce_v1_cmd_pending(hr_dev) && time_before(jiffies, end)) + cond_resched(); + + if (hns_roce_v1_cmd_pending(hr_dev)) { + dev_err(hr_dev->dev, "[cmd_poll]hw run cmd TIMEDOUT!\n"); + return -ETIMEDOUT; + } + + status = le32_to_cpu((__force __be32) + __raw_readl(hcr + HCR_STATUS_OFFSET)); + if ((status & STATUS_MASK) != 0x1) { + dev_err(hr_dev->dev, "mailbox status 0x%x!\n", status); + return -EBUSY; + } + + return 0; +} + void hns_roce_v1_set_gid(struct hns_roce_dev *hr_dev, u8 port, int gid_index, union ib_gid *gid) { @@ -3849,6 +3922,8 @@ static const struct hns_roce_hw hns_roce_hw_v1 = { .hw_profile = hns_roce_v1_profile, .hw_init = hns_roce_v1_init, .hw_exit = hns_roce_v1_exit, + .post_mbox = hns_roce_v1_post_mbox, + .chk_mbox = hns_roce_v1_chk_mbox, .set_gid = hns_roce_v1_set_gid, .set_mac = hns_roce_v1_set_mac, .set_mtu = hns_roce_v1_set_mtu, diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h index b213b5e..eb83ff3 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h @@ -948,6 +948,11 @@ struct hns_roce_qp_context { #define QP_CONTEXT_QPC_BYTES_188_TX_RETRY_CUR_INDEX_M \ (((1UL << 15) - 1) << QP_CONTEXT_QPC_BYTES_188_TX_RETRY_CUR_INDEX_S) +#define STATUS_MASK 0xff +#define GO_BIT_TIMEOUT_MSECS 10000 +#define HCR_STATUS_OFFSET 0x18 +#define HCR_GO_BIT 15 + struct hns_roce_rq_db { u32 u32_4; u32 u32_8; diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index af3cb30..259af2e 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -553,10 +553,94 @@ static int hns_roce_v2_profile(struct hns_roce_dev *hr_dev) return 0; } +static int hns_roce_v2_cmd_pending(struct hns_roce_dev *hr_dev) +{ + u32 status = readl(hr_dev->reg_base + ROCEE_VF_MB_STATUS_REG); + + return status >> HNS_ROCE_HW_RUN_BIT_SHIFT; +} + +static int hns_roce_v2_cmd_complete(struct hns_roce_dev *hr_dev) +{ + u32 status = readl(hr_dev->reg_base + ROCEE_VF_MB_STATUS_REG); + + return status & HNS_ROCE_HW_MB_STATUS_MASK; +} + +static int hns_roce_v2_post_mbox(struct hns_roce_dev *hr_dev, u64 in_param, + u64 out_param, u32 in_modifier, u8 op_modifier, + u16 op, u16 token, int event) +{ + struct device *dev = hr_dev->dev; + u32 *hcr = (u32 *)(hr_dev->reg_base + ROCEE_VF_MB_CFG0_REG); + unsigned long end; + u32 val0 = 0; + u32 val1 = 0; + + end = msecs_to_jiffies(HNS_ROCE_V2_GO_BIT_TIMEOUT_MSECS) + jiffies; + while (hns_roce_v2_cmd_pending(hr_dev)) { + if (time_after(jiffies, end)) { + dev_dbg(dev, "jiffies=%d end=%d\n", (int)jiffies, + (int)end); + return -EAGAIN; + } + cond_resched(); + } + + roce_set_field(val0, HNS_ROCE_VF_MB4_TAG_MASK, + HNS_ROCE_VF_MB4_TAG_SHIFT, in_modifier); + roce_set_field(val0, HNS_ROCE_VF_MB4_CMD_MASK, + HNS_ROCE_VF_MB4_CMD_SHIFT, op); + roce_set_field(val1, HNS_ROCE_VF_MB5_EVENT_MASK, + HNS_ROCE_VF_MB5_EVENT_SHIFT, event); + roce_set_field(val1, HNS_ROCE_VF_MB5_TOKEN_MASK, + HNS_ROCE_VF_MB5_TOKEN_SHIFT, token); + + __raw_writeq(cpu_to_le64(in_param), hcr + 0); + __raw_writeq(cpu_to_le64(out_param), hcr + 2); + + /* Memory barrier */ + wmb(); + + __raw_writel(cpu_to_le32(val0), hcr + 4); + __raw_writel(cpu_to_le32(val1), hcr + 5); + + mmiowb(); + + return 0; +} + +static int hns_roce_v2_chk_mbox(struct hns_roce_dev *hr_dev, + unsigned long timeout) +{ + struct device *dev = hr_dev->dev; + unsigned long end = 0; + u32 status; + + end = msecs_to_jiffies(timeout) + jiffies; + while (hns_roce_v2_cmd_pending(hr_dev) && time_before(jiffies, end)) + cond_resched(); + + if (hns_roce_v2_cmd_pending(hr_dev)) { + dev_err(dev, "[cmd_poll]hw run cmd TIMEDOUT!\n"); + return -ETIMEDOUT; + } + + status = hns_roce_v2_cmd_complete(hr_dev); + if (status != 0x1) { + dev_err(dev, "mailbox status 0x%x!\n", status); + return -EBUSY; + } + + return 0; +} + static const struct hns_roce_hw hns_roce_hw_v2 = { .cmq_init = hns_roce_v2_cmq_init, .cmq_exit = hns_roce_v2_cmq_exit, .hw_profile = hns_roce_v2_profile, + .post_mbox = hns_roce_v2_post_mbox, + .chk_mbox = hns_roce_v2_chk_mbox, }; static const struct pci_device_id hns_roce_hw_v2_pci_tbl[] = { diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h index 3dcc800..b420ea9 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h @@ -244,6 +244,26 @@ struct hns_roce_cmq_desc { u32 data[6]; }; +#define ROCEE_VF_MB_CFG0_REG 0x40 +#define ROCEE_VF_MB_STATUS_REG 0x58 + +#define HNS_ROCE_V2_GO_BIT_TIMEOUT_MSECS 10000 + +#define HNS_ROCE_HW_RUN_BIT_SHIFT 31 +#define HNS_ROCE_HW_MB_STATUS_MASK 0xFF + +#define HNS_ROCE_VF_MB4_TAG_MASK 0xFFFFFF00 +#define HNS_ROCE_VF_MB4_TAG_SHIFT 8 + +#define HNS_ROCE_VF_MB4_CMD_MASK 0xFF +#define HNS_ROCE_VF_MB4_CMD_SHIFT 0 + +#define HNS_ROCE_VF_MB5_EVENT_MASK 0x10000 +#define HNS_ROCE_VF_MB5_EVENT_SHIFT 16 + +#define HNS_ROCE_VF_MB5_TOKEN_MASK 0xFFFF +#define HNS_ROCE_VF_MB5_TOKEN_SHIFT 0 + struct hns_roce_v2_cmq_ring { dma_addr_t desc_dma_addr; struct hns_roce_cmq_desc *desc; -- 2.7.4