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Subject[PATCH v7 07/21] IB/hns: Add event queue support
Date
This patch added event queue support for RoCE driver. It is used
for RoCE interrupt. RoCE includes 32 synchronous event irqs, 1
asynchronous event irq and 1 common overflow irq.

Signed-off-by: Wei Hu <xavier.huwei@huawei.com>
Signed-off-by: Nenglong Zhao <zhaonenglong@hisilicon.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_cmd.c | 22 +
drivers/infiniband/hw/hns/hns_roce_common.h | 72 +++
drivers/infiniband/hw/hns/hns_roce_cq.c | 54 ++
drivers/infiniband/hw/hns/hns_roce_device.h | 138 +++++
drivers/infiniband/hw/hns/hns_roce_eq.c | 755 ++++++++++++++++++++++++++++
drivers/infiniband/hw/hns/hns_roce_eq.h | 108 ++++
drivers/infiniband/hw/hns/hns_roce_main.c | 24 +
drivers/infiniband/hw/hns/hns_roce_qp.c | 39 ++
8 files changed, 1212 insertions(+)
create mode 100644 drivers/infiniband/hw/hns/hns_roce_cq.c
create mode 100644 drivers/infiniband/hw/hns/hns_roce_eq.c
create mode 100644 drivers/infiniband/hw/hns/hns_roce_eq.h
create mode 100644 drivers/infiniband/hw/hns/hns_roce_qp.c

diff --git a/drivers/infiniband/hw/hns/hns_roce_cmd.c b/drivers/infiniband/hw/hns/hns_roce_cmd.c
index 597c964..aa1e0aa 100644
--- a/drivers/infiniband/hw/hns/hns_roce_cmd.c
+++ b/drivers/infiniband/hw/hns/hns_roce_cmd.c
@@ -22,6 +22,14 @@

#define CMD_MAX_NUM 32

+static int hns_roce_status_to_errno(u8 orig_status)
+{
+ if (orig_status == HNS_ROCE_CMD_SUCCESS)
+ return 0;
+ else
+ return -EIO;
+}
+
int hns_roce_cmd_init(struct hns_roce_dev *hr_dev)
{
struct device *dev = &hr_dev->pdev->dev;
@@ -94,3 +102,17 @@ void hns_roce_cmd_use_polling(struct hns_roce_dev *hr_dev)
kfree(hr_cmd->context);
up(&hr_cmd->poll_sem);
}
+
+void hns_roce_cmd_event(struct hns_roce_dev *hr_dev, u16 token, u8 status,
+ u64 out_param)
+{
+ struct hns_roce_cmd_context
+ *context = &hr_dev->cmd.context[token & hr_dev->cmd.token_mask];
+
+ if (token != context->token)
+ return;
+
+ context->result = hns_roce_status_to_errno(status);
+ context->out_param = out_param;
+ complete(&context->done);
+}
diff --git a/drivers/infiniband/hw/hns/hns_roce_common.h b/drivers/infiniband/hw/hns/hns_roce_common.h
index 5486e0b..257a7e5 100644
--- a/drivers/infiniband/hw/hns/hns_roce_common.h
+++ b/drivers/infiniband/hw/hns/hns_roce_common.h
@@ -10,6 +10,57 @@
#ifndef _HNS_ROCE_COMMON_H
#define _HNS_ROCE_COMMON_H

+#define roce_writel(value, addr) writel((value), (addr))
+#define roce_readl(addr) readl((addr))
+#define roce_raw_write(value, addr) \
+ __raw_writel((__force u32)cpu_to_le32(value), (addr))
+
+#define roce_get_field(origin, mask, shift) \
+ (((origin) & (mask)) >> (shift))
+
+#define roce_get_bit(origin, shift) \
+ roce_get_field((origin), (1ul << (shift)), (shift))
+
+#define roce_set_field(origin, mask, shift, val) \
+ do { \
+ (origin) &= (~(mask)); \
+ (origin) |= (((u32)(val) << (shift)) & (mask)); \
+ } while (0)
+
+#define roce_set_bit(origin, shift, val) \
+ roce_set_field((origin), (1ul << (shift)), (shift), (val))
+
+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_S 0
+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_M \
+ (((1UL << 2) - 1) << ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_S)
+
+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_AEQE_SHIFT_S 8
+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_AEQE_SHIFT_M \
+ (((1UL << 4) - 1) << ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_AEQE_SHIFT_S)
+
+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQ_ALM_OVF_INT_ST_S 17
+
+#define ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQ_BT_H_S 0
+#define ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQ_BT_H_M \
+ (((1UL << 5) - 1) << ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQ_BT_H_S)
+
+#define ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQE_CUR_IDX_S 16
+#define ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQE_CUR_IDX_M \
+ (((1UL << 16) - 1) << ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQE_CUR_IDX_S)
+
+#define ROCEE_CAEP_AEQE_CONS_IDX_CAEP_AEQE_CONS_IDX_S 0
+#define ROCEE_CAEP_AEQE_CONS_IDX_CAEP_AEQE_CONS_IDX_M \
+ (((1UL << 16) - 1) << ROCEE_CAEP_AEQE_CONS_IDX_CAEP_AEQE_CONS_IDX_S)
+
+#define ROCEE_CAEP_CEQC_SHIFT_CAEP_CEQ_ALM_OVF_INT_ST_S 16
+#define ROCEE_CAEP_CE_IRQ_MASK_CAEP_CEQ_ALM_OVF_MASK_S 1
+#define ROCEE_CAEP_CEQ_ALM_OVF_CAEP_CEQ_ALM_OVF_S 0
+
+#define ROCEE_CAEP_AE_MASK_CAEP_AEQ_ALM_OVF_MASK_S 0
+#define ROCEE_CAEP_AE_MASK_CAEP_AE_IRQ_MASK_S 1
+
+#define ROCEE_CAEP_AE_ST_CAEP_AEQ_ALM_OVF_S 0
+
/*************ROCEE_REG DEFINITION****************/
#define ROCEE_VENDOR_ID_REG 0x0
#define ROCEE_VENDOR_PART_ID_REG 0x4
@@ -19,8 +70,29 @@
#define ROCEE_SYS_IMAGE_GUID_L_REG 0xC
#define ROCEE_SYS_IMAGE_GUID_H_REG 0x10

+#define ROCEE_CAEP_AEQE_CONS_IDX_REG 0x3AC
+#define ROCEE_CAEP_CEQC_CONS_IDX_0_REG 0x3BC
+
+#define ROCEE_ECC_UCERR_ALM1_REG 0xB38
+#define ROCEE_ECC_UCERR_ALM2_REG 0xB3C
+#define ROCEE_ECC_CERR_ALM1_REG 0xB44
+#define ROCEE_ECC_CERR_ALM2_REG 0xB48
+
#define ROCEE_ACK_DELAY_REG 0x14

+#define ROCEE_CAEP_CE_INTERVAL_CFG_REG 0x190
+#define ROCEE_CAEP_CE_BURST_NUM_CFG_REG 0x194
+
#define ROCEE_MB1_REG 0x210

+#define ROCEE_CAEP_AEQC_AEQE_SHIFT_REG 0x3A0
+#define ROCEE_CAEP_CEQC_SHIFT_0_REG 0x3B0
+#define ROCEE_CAEP_CE_IRQ_MASK_0_REG 0x3C0
+#define ROCEE_CAEP_CEQ_ALM_OVF_0_REG 0x3C4
+#define ROCEE_CAEP_AE_MASK_REG 0x6C8
+#define ROCEE_CAEP_AE_ST_REG 0x6CC
+
+#define ROCEE_ECC_UCERR_ALM0_REG 0xB34
+#define ROCEE_ECC_CERR_ALM0_REG 0xB40
+
#endif /* _HNS_ROCE_COMMON_H */
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c
new file mode 100644
index 0000000..1dc8635
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_cq.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/hardirq.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include "hns_roce_device.h"
+
+void hns_roce_cq_completion(struct hns_roce_dev *hr_dev, u32 cqn)
+{
+ struct device *dev = &hr_dev->pdev->dev;
+ struct hns_roce_cq *cq;
+
+ cq = radix_tree_lookup(&hr_dev->cq_table.tree,
+ cqn & (hr_dev->caps.num_cqs - 1));
+ if (!cq) {
+ dev_warn(dev, "Completion event for bogus CQ 0x%08x\n", cqn);
+ return;
+ }
+
+ cq->comp(cq);
+}
+
+void hns_roce_cq_event(struct hns_roce_dev *hr_dev, u32 cqn, int event_type)
+{
+ struct hns_roce_cq_table *cq_table = &hr_dev->cq_table;
+ struct device *dev = &hr_dev->pdev->dev;
+ struct hns_roce_cq *cq;
+
+ spin_lock(&cq_table->lock);
+
+ cq = radix_tree_lookup(&cq_table->tree,
+ cqn & (hr_dev->caps.num_cqs - 1));
+ if (cq)
+ atomic_inc(&cq->refcount);
+
+ spin_unlock(&cq_table->lock);
+
+ if (!cq) {
+ dev_warn(dev, "Async event for bogus CQ %08x\n", cqn);
+ return;
+ }
+
+ cq->event(cq, (enum hns_roce_event)event_type);
+
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+}
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index f5641ed..a8258f3 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -21,6 +21,8 @@

#define DRV_NAME "hns_roce"

+#define HNS_ROCE_BA_SIZE (32 * 4096)
+
#define HNS_ROCE_MAX_IRQ_NUM 34
#define HNS_ROCE_MAX_PORTS 6

@@ -29,10 +31,93 @@
#define HNS_ROCE_AEQE_VEC_NUM 1
#define HNS_ROCE_AEQE_OF_VEC_NUM 1

+#define ADDR_SHIFT_12 12
#define ADDR_SHIFT_32 32
+#define ADDR_SHIFT_44 44
+
+enum hns_roce_event {
+ HNS_ROCE_EVENT_TYPE_PATH_MIG = 0x01,
+ HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED = 0x02,
+ HNS_ROCE_EVENT_TYPE_COMM_EST = 0x03,
+ HNS_ROCE_EVENT_TYPE_SQ_DRAINED = 0x04,
+ HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR = 0x05,
+ HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR = 0x06,
+ HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR = 0x07,
+ HNS_ROCE_EVENT_TYPE_SRQ_LIMIT_REACH = 0x08,
+ HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH = 0x09,
+ HNS_ROCE_EVENT_TYPE_SRQ_CATAS_ERROR = 0x0a,
+ HNS_ROCE_EVENT_TYPE_CQ_ACCESS_ERROR = 0x0b,
+ HNS_ROCE_EVENT_TYPE_CQ_OVERFLOW = 0x0c,
+ HNS_ROCE_EVENT_TYPE_CQ_ID_INVALID = 0x0d,
+ HNS_ROCE_EVENT_TYPE_PORT_CHANGE = 0x0f,
+ HNS_ROCE_EVENT_TYPE_DB_OVERFLOW = 0x12,
+ HNS_ROCE_EVENT_TYPE_MB = 0x13,
+ HNS_ROCE_EVENT_TYPE_CEQ_OVERFLOW = 0x14,
+};
+
+/* Local Work Queue Catastrophic Error,SUBTYPE 0x5 */
+enum {
+ HNS_ROCE_LWQCE_QPC_ERROR = 1,
+ HNS_ROCE_LWQCE_MTU_ERROR = 2,
+ HNS_ROCE_LWQCE_WQE_BA_ADDR_ERROR = 3,
+ HNS_ROCE_LWQCE_WQE_ADDR_ERROR = 4,
+ HNS_ROCE_LWQCE_SQ_WQE_SHIFT_ERROR = 5,
+ HNS_ROCE_LWQCE_SL_ERROR = 6,
+ HNS_ROCE_LWQCE_PORT_ERROR = 7,
+};
+
+/* Local Access Violation Work Queue Error,SUBTYPE 0x7 */
+enum {
+ HNS_ROCE_LAVWQE_R_KEY_VIOLATION = 1,
+ HNS_ROCE_LAVWQE_LENGTH_ERROR = 2,
+ HNS_ROCE_LAVWQE_VA_ERROR = 3,
+ HNS_ROCE_LAVWQE_PD_ERROR = 4,
+ HNS_ROCE_LAVWQE_RW_ACC_ERROR = 5,
+ HNS_ROCE_LAVWQE_KEY_STATE_ERROR = 6,
+ HNS_ROCE_LAVWQE_MR_OPERATION_ERROR = 7,
+};
+
+/* DOORBELL overflow subtype */
+enum {
+ HNS_ROCE_DB_SUBTYPE_SDB_OVF = 1,
+ HNS_ROCE_DB_SUBTYPE_SDB_ALM_OVF = 2,
+ HNS_ROCE_DB_SUBTYPE_ODB_OVF = 3,
+ HNS_ROCE_DB_SUBTYPE_ODB_ALM_OVF = 4,
+ HNS_ROCE_DB_SUBTYPE_SDB_ALM_EMP = 5,
+ HNS_ROCE_DB_SUBTYPE_ODB_ALM_EMP = 6,
+};
+
+enum {
+ HNS_ROCE_CMD_SUCCESS = 1,
+};
+
+struct hns_roce_buf_list {
+ void *buf;
+ dma_addr_t map;
+};
+
+struct hns_roce_cq {
+ void (*comp)(struct hns_roce_cq *);
+ void (*event)(struct hns_roce_cq *, enum hns_roce_event);
+
+ atomic_t refcount;
+ struct completion free;
+};
+
+struct hns_roce_qp_table {
+ spinlock_t lock;
+};
+
+struct hns_roce_cq_table {
+ spinlock_t lock;
+ struct radix_tree_root tree;
+};

struct hns_roce_cmd_context {
+ struct completion done;
+ int result;
int next;
+ u64 out_param;
u16 token;
};

@@ -65,11 +150,43 @@ struct hns_roce_cmdq {
u8 toggle;
};

+struct hns_roce_dev;
+
+struct hns_roce_qp {
+ void (*event)(struct hns_roce_qp *,
+ enum hns_roce_event);
+
+ atomic_t refcount;
+ struct completion free;
+};
+
struct hns_roce_ib_iboe {
struct net_device *netdevs[HNS_ROCE_MAX_PORTS];
u8 phy_port[HNS_ROCE_MAX_PORTS];
};

+struct hns_roce_eq {
+ struct hns_roce_dev *hr_dev;
+ void __iomem *doorbell;
+
+ int type_flag;/* Aeq:1 ceq:0 */
+ int eqn;
+ u32 entries;
+ int log_entries;
+ int eqe_size;
+ int irq;
+ u16 have_irq;
+ int log_page_size;
+ int cons_index;
+ struct hns_roce_buf_list *buf_list;
+};
+
+struct hns_roce_eq_table {
+ char *irq_names;
+ struct hns_roce_eq *eq;
+ void __iomem **eqc_base;
+};
+
struct hns_roce_caps {
u64 fw_ver;
u8 num_ports;
@@ -127,6 +244,7 @@ struct hns_roce_dev {
int irq[HNS_ROCE_MAX_IRQ_NUM];
u8 __iomem *reg_base;
struct hns_roce_caps caps;
+ struct radix_tree_root qp_table_tree;

u64 fw_ver;
u64 sys_image_guid;
@@ -135,17 +253,37 @@ struct hns_roce_dev {
u32 hw_rev;

struct hns_roce_cmdq cmd;
+ struct hns_roce_cq_table cq_table;
+ struct hns_roce_qp_table qp_table;
+ struct hns_roce_eq_table eq_table;

int cmd_mod;
int loop_idc;
struct hns_roce_hw *hw;
};

+static inline struct hns_roce_qp
+ *__hns_roce_qp_lookup(struct hns_roce_dev *hr_dev, u32 qpn)
+{
+ return radix_tree_lookup(&hr_dev->qp_table_tree,
+ qpn & (hr_dev->caps.num_qps - 1));
+}
+
int hns_roce_cmd_init(struct hns_roce_dev *hr_dev);
void hns_roce_cmd_cleanup(struct hns_roce_dev *hr_dev);
+void hns_roce_cmd_event(struct hns_roce_dev *hr_dev, u16 token, u8 status,
+ u64 out_param);
int hns_roce_cmd_use_events(struct hns_roce_dev *hr_dev);
void hns_roce_cmd_use_polling(struct hns_roce_dev *hr_dev);

+int hns_roce_init_eq_table(struct hns_roce_dev *hr_dev);
+
+void hns_roce_cleanup_eq_table(struct hns_roce_dev *hr_dev);
+
+void hns_roce_cq_completion(struct hns_roce_dev *hr_dev, u32 cqn);
+void hns_roce_cq_event(struct hns_roce_dev *hr_dev, u32 cqn, int event_type);
+void hns_roce_qp_event(struct hns_roce_dev *hr_dev, u32 qpn, int event_type);
+
extern struct hns_roce_hw hns_roce_hw_v1;

#endif /* _HNS_ROCE_DEVICE_H */
diff --git a/drivers/infiniband/hw/hns/hns_roce_eq.c b/drivers/infiniband/hw/hns/hns_roce_eq.c
new file mode 100644
index 0000000..1fe9ca1
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_eq.c
@@ -0,0 +1,755 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include "hns_roce_common.h"
+#include "hns_roce_device.h"
+#include "hns_roce_eq.h"
+
+static void eq_set_cons_index(struct hns_roce_eq *eq, int req_not)
+{
+ __raw_writel((__force u32)
+ cpu_to_le32((eq->cons_index & CONS_INDEX_MASK) |
+ (req_not << eq->log_entries)), eq->doorbell);
+ /* Memory barrier */
+ mb();
+}
+
+static struct hns_roce_aeqe *get_aeqe(struct hns_roce_eq *eq, u32 entry)
+{
+ unsigned long off = (entry & (eq->entries - 1)) *
+ HNS_ROCE_AEQ_ENTRY_SIZE;
+
+ return (struct hns_roce_aeqe *)((u8 *)
+ (eq->buf_list[off / HNS_ROCE_BA_SIZE].buf) +
+ off % HNS_ROCE_BA_SIZE);
+}
+
+static struct hns_roce_aeqe *next_aeqe_sw(struct hns_roce_eq *eq)
+{
+ struct hns_roce_aeqe *aeqe = get_aeqe(eq, eq->cons_index);
+
+ return (roce_get_bit(aeqe->asyn, HNS_ROCE_AEQE_U32_4_OWNER_S) ^
+ !!(eq->cons_index & eq->entries)) ? aeqe : NULL;
+}
+
+static int hns_roce_aeq_int(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
+{
+ struct device *dev = &hr_dev->pdev->dev;
+ struct hns_roce_aeqe *aeqe;
+ int aeqes_found = 0;
+ int qpn = 0;
+
+ while ((aeqe = next_aeqe_sw(eq))) {
+ dev_dbg(dev, "aeqe = %p, aeqe->asyn.event_type = 0x%lx\n", aeqe,
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ /* Memory barrier */
+ rmb();
+
+ switch (roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S)) {
+ case HNS_ROCE_EVENT_TYPE_PATH_MIG:
+ dev_warn(dev, "PATH MIG not supported\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_COMM_EST:
+ dev_warn(dev, "COMMUNICATION ESTABLISHED\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_SQ_DRAINED:
+ dev_warn(dev, "SQ DRAINED not supported\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED:
+ dev_warn(dev, "PATH MIG FAILED\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR:
+ dev_warn(dev, "qpn = 0x%lx\n",
+ roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S));
+ hns_roce_qp_event(hr_dev,
+ roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR:
+ qpn = roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S);
+ dev_warn(dev, "Local Work Queue Catastrophic Error.\n");
+ switch (roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_S)) {
+ case HNS_ROCE_LWQCE_QPC_ERROR:
+ dev_warn(dev, "QP %d, QPC error.\n", qpn);
+ break;
+ case HNS_ROCE_LWQCE_MTU_ERROR:
+ dev_warn(dev, "QP %d, MTU error.\n", qpn);
+ break;
+ case HNS_ROCE_LWQCE_WQE_BA_ADDR_ERROR:
+ dev_warn(dev, "QP %d, WQE BA addr error.\n",
+ qpn);
+ break;
+ case HNS_ROCE_LWQCE_WQE_ADDR_ERROR:
+ dev_warn(dev, "QP %d, WQE addr error.\n", qpn);
+ break;
+ case HNS_ROCE_LWQCE_SQ_WQE_SHIFT_ERROR:
+ dev_warn(dev, "QP %d, WQE shift error\n", qpn);
+ break;
+ case HNS_ROCE_LWQCE_SL_ERROR:
+ dev_warn(dev, "QP %d, SL error.\n", qpn);
+ break;
+ case HNS_ROCE_LWQCE_PORT_ERROR:
+ dev_warn(dev, "QP %d, port error.\n", qpn);
+ break;
+ default:
+ break;
+ }
+
+ hns_roce_qp_event(hr_dev,
+ roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR:
+ qpn = roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S);
+ dev_warn(dev, "Local Access Violation Work Queue Error.\n");
+ switch (roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_S)) {
+ case HNS_ROCE_LAVWQE_R_KEY_VIOLATION:
+ dev_warn(dev, "QP %d, R_key violation.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_LENGTH_ERROR:
+ dev_warn(dev, "QP %d, length error.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_VA_ERROR:
+ dev_warn(dev, "QP %d, VA error.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_PD_ERROR:
+ dev_err(dev, "QP %d, PD error.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_RW_ACC_ERROR:
+ dev_warn(dev, "QP %d, rw acc error.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_KEY_STATE_ERROR:
+ dev_warn(dev, "QP %d, key state error.\n", qpn);
+ break;
+ case HNS_ROCE_LAVWQE_MR_OPERATION_ERROR:
+ dev_warn(dev, "QP %d, MR operation error.\n",
+ qpn);
+ break;
+ default:
+ break;
+ }
+
+ hns_roce_qp_event(hr_dev,
+ roce_get_field(aeqe->event.qp_event.qp,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M,
+ HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_SRQ_LIMIT_REACH:
+ case HNS_ROCE_EVENT_TYPE_SRQ_CATAS_ERROR:
+ case HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH:
+ dev_warn(dev, "SRQ not support!\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_CQ_ACCESS_ERROR:
+ dev_warn(dev, "CQ 0x%lx access err.\n",
+ roce_get_field(aeqe->event.cq_event.cq,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S));
+ hns_roce_cq_event(hr_dev,
+ le32_to_cpu(roce_get_field(aeqe->event.cq_event.cq,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S)),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_CQ_OVERFLOW:
+ dev_warn(dev, "CQ 0x%lx overflow\n",
+ roce_get_field(aeqe->event.cq_event.cq,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S));
+ hns_roce_cq_event(hr_dev,
+ le32_to_cpu(roce_get_field(aeqe->event.cq_event.cq,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S)),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_CQ_ID_INVALID:
+ dev_warn(dev, "CQ ID invalid.\n");
+ hns_roce_cq_event(hr_dev,
+ le32_to_cpu(roce_get_field(aeqe->event.cq_event.cq,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M,
+ HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S)),
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S));
+ break;
+ case HNS_ROCE_EVENT_TYPE_PORT_CHANGE:
+ dev_warn(dev, "port change.\n");
+ break;
+ case HNS_ROCE_EVENT_TYPE_MB:
+ hns_roce_cmd_event(hr_dev,
+ le16_to_cpu(aeqe->event.cmd.token),
+ aeqe->event.cmd.status,
+ le64_to_cpu(aeqe->event.cmd.out_param
+ ));
+ break;
+ case HNS_ROCE_EVENT_TYPE_DB_OVERFLOW:
+ switch (roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_S)) {
+ case HNS_ROCE_DB_SUBTYPE_SDB_OVF:
+ dev_warn(dev, "SDB overflow.\n");
+ break;
+ case HNS_ROCE_DB_SUBTYPE_SDB_ALM_OVF:
+ dev_warn(dev, "SDB almost overflow.\n");
+ break;
+ case HNS_ROCE_DB_SUBTYPE_SDB_ALM_EMP:
+ dev_warn(dev, "SDB almost empty.\n");
+ break;
+ case HNS_ROCE_DB_SUBTYPE_ODB_OVF:
+ dev_warn(dev, "ODB overflow.\n");
+ break;
+ case HNS_ROCE_DB_SUBTYPE_ODB_ALM_OVF:
+ dev_warn(dev, "ODB almost overflow.\n");
+ break;
+ case HNS_ROCE_DB_SUBTYPE_ODB_ALM_EMP:
+ dev_warn(dev, "SDB almost empty.\n");
+ break;
+ default:
+ break;
+ }
+
+ break;
+ case HNS_ROCE_EVENT_TYPE_CEQ_OVERFLOW:
+ dev_warn(dev, "CEQ 0x%lx OVERFLOW EVENT.\n",
+ roce_get_field(aeqe->event.ce_event.ceqe,
+ HNS_ROCE_AEQE_EVENT_CE_EVENT_CEQE_CEQN_M,
+ HNS_ROCE_AEQE_EVENT_CE_EVENT_CEQE_CEQN_S));
+ break;
+ default:
+ dev_warn(dev, "Unhandled event 0x%lx on EQ %d at index %u\n",
+ roce_get_field(aeqe->asyn,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M,
+ HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S),
+ eq->eqn, eq->cons_index);
+ break;
+ };
+
+ eq->cons_index++;
+ aeqes_found = 1;
+
+ if (eq->cons_index > 2 * hr_dev->caps.aeqe_depth - 1) {
+ dev_warn(dev, "cons_index overflow, set back to zero\n"
+ );
+ eq->cons_index = 0;
+ }
+ }
+
+ eq_set_cons_index(eq, 0);
+
+ return aeqes_found;
+}
+
+static struct hns_roce_ceqe *get_ceqe(struct hns_roce_eq *eq, u32 entry)
+{
+ unsigned long off = (entry & (eq->entries - 1)) *
+ HNS_ROCE_CEQ_ENTRY_SIZE;
+
+ return (struct hns_roce_ceqe *)((u8 *)
+ (eq->buf_list[off / HNS_ROCE_BA_SIZE].buf) +
+ off % HNS_ROCE_BA_SIZE);
+}
+
+static struct hns_roce_ceqe *next_ceqe_sw(struct hns_roce_eq *eq)
+{
+ struct hns_roce_ceqe *ceqe = get_ceqe(eq, eq->cons_index);
+
+ return (!!(roce_get_bit(ceqe->ceqe.comp,
+ HNS_ROCE_CEQE_CEQE_COMP_OWNER_S))) ^
+ (!!(eq->cons_index & eq->entries)) ? ceqe : NULL;
+}
+
+static int hns_roce_ceq_int(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
+{
+ struct hns_roce_ceqe *ceqe;
+ int ceqes_found = 0;
+ u32 cqn;
+
+ while ((ceqe = next_ceqe_sw(eq))) {
+ /* Memory barrier */
+ rmb();
+ cqn = roce_get_field(ceqe->ceqe.comp,
+ HNS_ROCE_CEQE_CEQE_COMP_CQN_M,
+ HNS_ROCE_CEQE_CEQE_COMP_CQN_S);
+ hns_roce_cq_completion(hr_dev, cqn);
+
+ ++eq->cons_index;
+ ceqes_found = 1;
+
+ if (eq->cons_index > 2 * hr_dev->caps.ceqe_depth[eq->eqn] - 1) {
+ dev_warn(&eq->hr_dev->pdev->dev,
+ "cons_index overflow, set back to zero\n");
+ eq->cons_index = 0;
+ }
+ }
+
+ eq_set_cons_index(eq, 0);
+
+ return ceqes_found;
+}
+
+static int hns_roce_aeq_ovf_int(struct hns_roce_dev *hr_dev,
+ struct hns_roce_eq *eq)
+{
+ struct device *dev = &eq->hr_dev->pdev->dev;
+ int eqovf_found = 0;
+ u32 caepaemask_val;
+ u32 cealmovf_val;
+ u32 caepaest_val;
+ u32 aeshift_val;
+ u32 ceshift_val;
+ u32 cemask_val;
+ int i = 0;
+
+ /**
+ * AEQ overflow ECC mult bit err CEQ overflow alarm
+ * must clear interrupt, mask irq, clear irq, cancel mask operation
+ */
+ aeshift_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_REG);
+ if (roce_get_bit(aeshift_val,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQ_ALM_OVF_INT_ST_S) == 1) {
+ dev_warn(dev, "AEQ overflow!\n");
+
+ /* Set mask */
+ caepaemask_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_AE_MASK_REG);
+ roce_set_bit(caepaemask_val,
+ ROCEE_CAEP_AE_MASK_CAEP_AEQ_ALM_OVF_MASK_S,
+ HNS_ROCE_INT_MASK_ENABLE);
+ roce_writel(caepaemask_val,
+ hr_dev->reg_base + ROCEE_CAEP_AE_MASK_REG);
+
+ /* Clear int state(INT_WC : write 1 clear) */
+ caepaest_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_AE_ST_REG);
+ roce_set_bit(caepaest_val,
+ ROCEE_CAEP_AE_ST_CAEP_AEQ_ALM_OVF_S, 1);
+ roce_writel(caepaest_val, hr_dev->reg_base +
+ ROCEE_CAEP_AE_ST_REG);
+
+ /* Clear mask */
+ caepaemask_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_AE_MASK_REG);
+ roce_set_bit(caepaemask_val,
+ ROCEE_CAEP_AE_MASK_CAEP_AEQ_ALM_OVF_MASK_S,
+ HNS_ROCE_INT_MASK_DISABLE);
+ roce_writel(caepaemask_val, hr_dev->reg_base +
+ ROCEE_CAEP_AE_MASK_REG);
+ }
+
+ /* CEQ almost overflow */
+ for (i = 0; i < hr_dev->caps.num_comp_vectors; i++) {
+ ceshift_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_CEQC_SHIFT_0_REG + i * CEQ_REG_OFFSET);
+ if (roce_get_bit(ceshift_val,
+ ROCEE_CAEP_CEQC_SHIFT_CAEP_CEQ_ALM_OVF_INT_ST_S) == 1) {
+ dev_warn(dev, "CEQ[%d] almost overflow!\n", i);
+ eqovf_found++;
+
+ /* Set mask */
+ cemask_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_CE_IRQ_MASK_0_REG +
+ i * CEQ_REG_OFFSET);
+ roce_set_bit(cemask_val,
+ ROCEE_CAEP_CE_IRQ_MASK_CAEP_CEQ_ALM_OVF_MASK_S,
+ HNS_ROCE_INT_MASK_ENABLE);
+ roce_writel(cemask_val, hr_dev->reg_base +
+ ROCEE_CAEP_CE_IRQ_MASK_0_REG +
+ i * CEQ_REG_OFFSET);
+
+ /* Clear int state(INT_WC : write 1 clear) */
+ cealmovf_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_CEQ_ALM_OVF_0_REG +
+ i * CEQ_REG_OFFSET);
+ roce_set_bit(cealmovf_val,
+ ROCEE_CAEP_CEQ_ALM_OVF_CAEP_CEQ_ALM_OVF_S,
+ 1);
+ roce_writel(cealmovf_val, hr_dev->reg_base +
+ ROCEE_CAEP_CEQ_ALM_OVF_0_REG +
+ i * CEQ_REG_OFFSET);
+
+ /* Clear mask */
+ cemask_val = roce_readl(hr_dev->reg_base +
+ ROCEE_CAEP_CE_IRQ_MASK_0_REG +
+ i * CEQ_REG_OFFSET);
+ roce_set_bit(cemask_val,
+ ROCEE_CAEP_CE_IRQ_MASK_CAEP_CEQ_ALM_OVF_MASK_S,
+ HNS_ROCE_INT_MASK_DISABLE);
+ roce_writel(cemask_val, hr_dev->reg_base +
+ ROCEE_CAEP_CE_IRQ_MASK_0_REG +
+ i * CEQ_REG_OFFSET);
+ }
+ }
+
+ /* ECC multi-bit error alarm */
+ dev_warn(dev, "ECC UCERR ALARM: 0x%x, 0x%x, 0x%x\n",
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_UCERR_ALM0_REG),
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_UCERR_ALM1_REG),
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_UCERR_ALM2_REG));
+ dev_warn(dev, "ECC CERR ALARM: 0x%x, 0x%x, 0x%x\n",
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_CERR_ALM0_REG),
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_CERR_ALM1_REG),
+ roce_readl(hr_dev->reg_base + ROCEE_ECC_CERR_ALM2_REG));
+
+ return eqovf_found;
+}
+
+static int hns_roce_eq_int(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
+{
+ int eqes_found = 0;
+
+ if (likely(eq->type_flag == HNS_ROCE_CEQ))
+ /* CEQ irq routine, CEQ is pulse irq, not clear */
+ eqes_found = hns_roce_ceq_int(hr_dev, eq);
+ else if (likely(eq->type_flag == HNS_ROCE_AEQ))
+ /* AEQ irq routine, AEQ is pulse irq, not clear */
+ eqes_found = hns_roce_aeq_int(hr_dev, eq);
+ else
+ /* AEQ queue overflow irq */
+ eqes_found = hns_roce_aeq_ovf_int(hr_dev, eq);
+
+ return eqes_found;
+}
+
+static irqreturn_t hns_roce_msi_x_interrupt(int irq, void *eq_ptr)
+{
+ int int_work = 0;
+ struct hns_roce_eq *eq = eq_ptr;
+ struct hns_roce_dev *hr_dev = eq->hr_dev;
+
+ int_work = hns_roce_eq_int(hr_dev, eq);
+
+ return IRQ_RETVAL(int_work);
+}
+
+static void hns_roce_enable_eq(struct hns_roce_dev *hr_dev, int eq_num,
+ int enable_flag)
+{
+ void __iomem *eqc = hr_dev->eq_table.eqc_base[eq_num];
+ u32 val;
+
+ val = roce_readl(eqc);
+ if (enable_flag)
+ roce_set_field(val,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_M,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_S,
+ HNS_ROCE_EQ_STAT_VALID);
+ else
+ roce_set_field(val,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_M,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_S,
+ HNS_ROCE_EQ_STAT_INVALID);
+ roce_writel(val, eqc);
+}
+
+static int hns_roce_create_eq(struct hns_roce_dev *hr_dev,
+ struct hns_roce_eq *eq)
+{
+ void __iomem *eqc = hr_dev->eq_table.eqc_base[eq->eqn];
+ struct device *dev = &hr_dev->pdev->dev;
+ dma_addr_t tmp_dma_addr;
+ u32 eqconsindx_val = 0;
+ u32 eqcuridx_val = 0;
+ u32 eqshift_val = 0;
+ int num_bas = 0;
+ int ret;
+ int i;
+
+ num_bas = (PAGE_ALIGN(eq->entries * eq->eqe_size) +
+ HNS_ROCE_BA_SIZE - 1) / HNS_ROCE_BA_SIZE;
+
+ if ((eq->entries * eq->eqe_size) > HNS_ROCE_BA_SIZE) {
+ dev_err(dev, "[error]eq buf %d gt ba size(%d) need bas=%d\n",
+ (eq->entries * eq->eqe_size), HNS_ROCE_BA_SIZE,
+ num_bas);
+ return -EINVAL;
+ }
+
+ eq->buf_list = kcalloc(num_bas, sizeof(*eq->buf_list), GFP_KERNEL);
+ if (!eq->buf_list)
+ return -ENOMEM;
+
+ for (i = 0; i < num_bas; ++i) {
+ eq->buf_list[i].buf = dma_alloc_coherent(dev, HNS_ROCE_BA_SIZE,
+ &tmp_dma_addr,
+ GFP_KERNEL);
+ if (!eq->buf_list[i].buf) {
+ ret = -ENOMEM;
+ dev_err(dev, "eq buf_list buf alloc failed!\n");
+ goto err_out_free_pages;
+ }
+
+ eq->buf_list[i].map = tmp_dma_addr;
+ memset(eq->buf_list[i].buf, 0, HNS_ROCE_BA_SIZE);
+ }
+ eq->cons_index = 0;
+ roce_set_field(eqshift_val,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_M,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_STATE_S,
+ HNS_ROCE_EQ_STAT_INVALID);
+ roce_set_field(eqshift_val,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_AEQE_SHIFT_M,
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_CAEP_AEQC_AEQE_SHIFT_S,
+ eq->log_entries);
+ roce_writel(eqshift_val, eqc);
+
+ /* Configure eq extended address 12~44bit */
+ roce_writel((u32)(eq->buf_list[0].map >> ADDR_SHIFT_12), (u8 *)eqc + 4);
+
+ /* Configure eq extended address 45~49 bit, producer index */
+ roce_set_field(eqcuridx_val, ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQ_BT_H_M,
+ ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQ_BT_H_S,
+ eq->buf_list[0].map >> ADDR_SHIFT_44);
+ roce_set_field(eqcuridx_val,
+ ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQE_CUR_IDX_M,
+ ROCEE_CAEP_AEQE_CUR_IDX_CAEP_AEQE_CUR_IDX_S, 0);
+ roce_writel(eqcuridx_val, (u8 *)eqc + 8);
+
+ /* Configure eq consumer index */
+ roce_set_field(eqconsindx_val,
+ ROCEE_CAEP_AEQE_CONS_IDX_CAEP_AEQE_CONS_IDX_M,
+ ROCEE_CAEP_AEQE_CONS_IDX_CAEP_AEQE_CONS_IDX_S, 0);
+ roce_writel(eqconsindx_val, (u8 *)eqc + 0xc);
+ return 0;
+
+err_out_free_pages:
+ for (i = 0; i < num_bas; ++i)
+ if (eq->buf_list[i].buf)
+ dma_free_coherent(dev, HNS_ROCE_BA_SIZE,
+ eq->buf_list[i].buf,
+ eq->buf_list[i].map);
+ kfree(eq->buf_list);
+ return ret;
+}
+
+static void hns_roce_free_eq(struct hns_roce_dev *hr_dev,
+ struct hns_roce_eq *eq)
+{
+ int i = 0;
+ int npages = (PAGE_ALIGN(eq->eqe_size * eq->entries) +
+ HNS_ROCE_BA_SIZE - 1) / HNS_ROCE_BA_SIZE;
+
+ if (!eq->buf_list)
+ return;
+
+ for (i = 0; i < npages; ++i)
+ if (eq->buf_list[i].buf)
+ dma_free_coherent(&hr_dev->pdev->dev, HNS_ROCE_BA_SIZE,
+ eq->buf_list[i].buf,
+ eq->buf_list[i].map);
+ kfree(eq->buf_list);
+}
+
+void hns_roce_int_mask_en(struct hns_roce_dev *hr_dev)
+{
+ void __iomem *reg_caepceirqmsk;
+ void __iomem *reg_caepaemsk;
+ int i = 0;
+ u32 aemask_val;
+ int masken = 0;
+
+ /* AEQ INT */
+ reg_caepaemsk = (void *)(hr_dev->reg_base + ROCEE_CAEP_AE_MASK_REG);
+ aemask_val = roce_readl(reg_caepaemsk);
+ roce_set_bit(aemask_val, ROCEE_CAEP_AE_MASK_CAEP_AEQ_ALM_OVF_MASK_S,
+ masken);
+ roce_set_bit(aemask_val, ROCEE_CAEP_AE_MASK_CAEP_AE_IRQ_MASK_S, masken);
+ roce_writel(aemask_val, reg_caepaemsk);
+
+ /* CEQ INT */
+ for (i = 0; i < hr_dev->caps.num_comp_vectors; i++) {
+ /* IRQ mask */
+ reg_caepceirqmsk = (void *)((char *)hr_dev->reg_base +
+ ROCEE_CAEP_CE_IRQ_MASK_0_REG +
+ i * CEQ_REG_OFFSET);
+ roce_writel(masken, reg_caepceirqmsk);
+ }
+}
+
+void hns_roce_ce_int_default_cfg(struct hns_roce_dev *hr_dev)
+{
+ /* Configure ce int interval */
+ roce_writel(HNS_ROCE_CEQ_DEFAULT_INTERVAL,
+ hr_dev->reg_base + ROCEE_CAEP_CE_INTERVAL_CFG_REG);
+ /* Configure ce int burst num */
+ roce_writel(HNS_ROCE_CEQ_DEFAULT_BURST_NUM,
+ hr_dev->reg_base + ROCEE_CAEP_CE_BURST_NUM_CFG_REG);
+}
+
+int hns_roce_init_eq_table(struct hns_roce_dev *hr_dev)
+{
+ struct hns_roce_eq_table *eq_table = &hr_dev->eq_table;
+ struct device *dev = &hr_dev->pdev->dev;
+ struct hns_roce_eq *eq = NULL;
+ const char *eq_name = NULL;
+ int eq_num = 0;
+ int ret = 0;
+ int i = 0;
+
+ eq_num = hr_dev->caps.num_comp_vectors + hr_dev->caps.num_aeq_vectors;
+ eq_table->eq = kcalloc(eq_num, sizeof(*eq_table->eq), GFP_KERNEL);
+ if (!eq_table->eq) {
+ dev_err(dev, "eq alloc failed!\n");
+ return -ENOMEM;
+ }
+
+ eq_table->eqc_base = kcalloc(eq_num, sizeof(*eq_table->eqc_base),
+ GFP_KERNEL);
+ if (!eq_table->eqc_base) {
+ ret = -ENOMEM;
+ dev_err(dev, "eqc_base alloc failed!\n");
+ goto err_eqc_base_alloc_fail;
+ }
+
+ eq_table->irq_names = kzalloc(eq_num * IRQ_NAMES_LEN, GFP_KERNEL);
+ if (!eq_table->irq_names) {
+ ret = -ENOMEM;
+ dev_err(dev, "irq_names alloc failed!\n");
+ goto err_irq_name_alloc_fail;
+ }
+
+ for (i = 0; i < eq_num; i++) {
+ eq = &eq_table->eq[i];
+ eq->hr_dev = hr_dev;
+ eq->eqn = i;
+ eq->irq = hr_dev->irq[i];
+ eq->log_page_size = PAGE_SHIFT;
+
+ if (i < hr_dev->caps.num_comp_vectors) {
+ /* CEQ */
+ eq_table->eqc_base[i] = hr_dev->reg_base +
+ ROCEE_CAEP_CEQC_SHIFT_0_REG +
+ HNS_ROCE_CEQC_REG_OFFSET * i;
+ snprintf(eq_table->irq_names + i * IRQ_NAMES_LEN,
+ IRQ_NAMES_LEN, "hns-roce-comp-%d", i);
+ eq->type_flag = HNS_ROCE_CEQ;
+ eq->doorbell = hr_dev->reg_base +
+ ROCEE_CAEP_CEQC_CONS_IDX_0_REG +
+ HNS_ROCE_CEQC_REG_OFFSET * i;
+ eq->entries = hr_dev->caps.ceqe_depth[i];
+ eq->log_entries = ilog2(eq->entries);
+ eq->eqe_size = sizeof(struct hns_roce_ceqe);
+ } else {
+ /* AEQ */
+ eq_table->eqc_base[i] = hr_dev->reg_base +
+ ROCEE_CAEP_AEQC_AEQE_SHIFT_REG;
+ snprintf(eq_table->irq_names + i * IRQ_NAMES_LEN,
+ IRQ_NAMES_LEN, "hns-roce-async-%d",
+ i - hr_dev->caps.num_comp_vectors);
+ eq->type_flag = HNS_ROCE_AEQ;
+ eq->doorbell = hr_dev->reg_base +
+ ROCEE_CAEP_AEQE_CONS_IDX_REG;
+ eq->entries = hr_dev->caps.aeqe_depth;
+ eq->log_entries = ilog2(eq->entries);
+ eq->eqe_size = sizeof(struct hns_roce_aeqe);
+ }
+ }
+
+ /* Disable irq */
+ hns_roce_int_mask_en(hr_dev);
+
+ /* Configure CE irq interval and burst num */
+ hns_roce_ce_int_default_cfg(hr_dev);
+
+ for (i = 0; i < eq_num; i++) {
+ ret = hns_roce_create_eq(hr_dev, &eq_table->eq[i]);
+ if (ret) {
+ dev_err(dev, "eq create failed\n");
+ goto err_create_eq_fail;
+ }
+
+ eq_name = eq_table->irq_names + i * IRQ_NAMES_LEN;
+ ret = request_irq(eq_table->eq[i].irq, hns_roce_msi_x_interrupt,
+ 0, eq_name, eq_table->eq + i);
+ if (ret) {
+ dev_err(dev, "request irq error!\n");
+ goto err_create_eq_fail;
+ }
+
+ eq_table->eq[i].have_irq = 1;
+
+ hns_roce_enable_eq(hr_dev, i, EQ_ENABLE);
+ }
+
+ return 0;
+
+err_create_eq_fail:
+ for (i = 0; i < eq_num; i++) {
+ /* Disable EQ */
+ hns_roce_enable_eq(hr_dev, i, EQ_DISABLE);
+
+ if (eq_table->eq[i].have_irq)
+ free_irq(eq_table->eq[i].irq, eq_table->eq + i);
+
+ hns_roce_free_eq(hr_dev, &eq_table->eq[i]);
+ }
+
+ kfree(eq_table->irq_names);
+
+err_irq_name_alloc_fail:
+ kfree(eq_table->eqc_base);
+
+err_eqc_base_alloc_fail:
+ kfree(eq_table->eq);
+ return ret;
+}
+
+void hns_roce_cleanup_eq_table(struct hns_roce_dev *hr_dev)
+{
+ int i;
+ int eq_num;
+ struct hns_roce_eq_table *eq_table = &hr_dev->eq_table;
+
+ eq_num = hr_dev->caps.num_comp_vectors + hr_dev->caps.num_aeq_vectors;
+ for (i = 0; i < eq_num; i++) {
+ /* Disable EQ */
+ hns_roce_enable_eq(hr_dev, i, EQ_DISABLE);
+
+ if (eq_table->eq[i].have_irq)
+ free_irq(eq_table->eq[i].irq, eq_table->eq + i);
+
+ hns_roce_free_eq(hr_dev, &eq_table->eq[i]);
+ }
+
+ kfree(eq_table->irq_names);
+ kfree(eq_table->eqc_base);
+ kfree(eq_table->eq);
+}
diff --git a/drivers/infiniband/hw/hns/hns_roce_eq.h b/drivers/infiniband/hw/hns/hns_roce_eq.h
new file mode 100644
index 0000000..2770a97
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_eq.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _HNS_ROCE_EQ_H
+#define _HNS_ROCE_EQ_H
+
+#define HNS_ROCE_CEQ 1
+#define HNS_ROCE_AEQ 2
+
+#define HNS_ROCE_CEQ_ENTRY_SIZE 0x4
+#define HNS_ROCE_AEQ_ENTRY_SIZE 0x10
+#define HNS_ROCE_CEQC_REG_OFFSET 0x18
+
+#define HNS_ROCE_CEQ_DEFAULT_INTERVAL 0x10
+#define HNS_ROCE_CEQ_DEFAULT_BURST_NUM 0x10
+
+#define HNS_ROCE_INT_MASK_DISABLE 0
+#define HNS_ROCE_INT_MASK_ENABLE 1
+
+#define IRQ_NAMES_LEN 32
+#define EQ_ENABLE 1
+#define EQ_DISABLE 0
+#define CONS_INDEX_MASK 0xffff
+
+#define CEQ_REG_OFFSET 0x18
+
+enum {
+ HNS_ROCE_EQ_STAT_INVALID = 0,
+ HNS_ROCE_EQ_STAT_VALID = 2,
+};
+
+struct hns_roce_aeqe {
+ u32 asyn;
+ union {
+ struct {
+ u32 qp;
+ u32 rsv0;
+ u32 rsv1;
+ } qp_event;
+
+ struct {
+ u32 cq;
+ u32 rsv0;
+ u32 rsv1;
+ } cq_event;
+
+ struct {
+ u32 port;
+ u32 rsv0;
+ u32 rsv1;
+ } port_event;
+
+ struct {
+ u32 ceqe;
+ u32 rsv0;
+ u32 rsv1;
+ } ce_event;
+
+ struct {
+ __le64 out_param;
+ __le16 token;
+ u8 status;
+ u8 rsv0;
+ } __packed cmd;
+ } event;
+};
+
+#define HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S 16
+#define HNS_ROCE_AEQE_U32_4_EVENT_TYPE_M \
+ (((1UL << 8) - 1) << HNS_ROCE_AEQE_U32_4_EVENT_TYPE_S)
+
+#define HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_S 24
+#define HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_M \
+ (((1UL << 7) - 1) << HNS_ROCE_AEQE_U32_4_EVENT_SUB_TYPE_S)
+
+#define HNS_ROCE_AEQE_U32_4_OWNER_S 31
+
+#define HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S 0
+#define HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_M \
+ (((1UL << 24) - 1) << HNS_ROCE_AEQE_EVENT_QP_EVENT_QP_QPN_S)
+
+#define HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S 0
+#define HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_M \
+ (((1UL << 16) - 1) << HNS_ROCE_AEQE_EVENT_CQ_EVENT_CQ_CQN_S)
+
+#define HNS_ROCE_AEQE_EVENT_CE_EVENT_CEQE_CEQN_S 0
+#define HNS_ROCE_AEQE_EVENT_CE_EVENT_CEQE_CEQN_M \
+ (((1UL << 5) - 1) << HNS_ROCE_AEQE_EVENT_CE_EVENT_CEQE_CEQN_S)
+
+struct hns_roce_ceqe {
+ union {
+ int comp;
+ } ceqe;
+};
+
+#define HNS_ROCE_CEQE_CEQE_COMP_OWNER_S 0
+
+#define HNS_ROCE_CEQE_CEQE_COMP_CQN_S 16
+#define HNS_ROCE_CEQE_CEQE_COMP_CQN_M \
+ (((1UL << 16) - 1) << HNS_ROCE_CEQE_CEQE_COMP_CQN_S)
+
+#endif /* _HNS_ROCE_EQ_H */
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 07b6fda..fb2564d 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -165,6 +165,26 @@ static int hns_roce_probe(struct platform_device *pdev)
goto error_failed_cmd_init;
}

+ ret = hns_roce_init_eq_table(hr_dev);
+ if (ret) {
+ dev_err(dev, "eq init failed!\n");
+ goto error_failed_eq_table;
+ }
+
+ if (hr_dev->cmd_mod) {
+ ret = hns_roce_cmd_use_events(hr_dev);
+ if (ret) {
+ dev_err(dev, "Switch to event-driven cmd failed!\n");
+ goto error_failed_use_event;
+ }
+ }
+
+error_failed_use_event:
+ hns_roce_cleanup_eq_table(hr_dev);
+
+error_failed_eq_table:
+ hns_roce_cmd_cleanup(hr_dev);
+
error_failed_cmd_init:
ret = hns_roce_engine_reset(hr_dev, false);
if (ret)
@@ -184,6 +204,10 @@ static int hns_roce_remove(struct platform_device *pdev)
{
struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);

+ if (hr_dev->cmd_mod)
+ hns_roce_cmd_use_polling(hr_dev);
+
+ hns_roce_cleanup_eq_table(hr_dev);
hns_roce_cmd_cleanup(hr_dev);
(void)hns_roce_engine_reset(hr_dev, false);

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
new file mode 100644
index 0000000..e0e41ca
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_pack.h>
+#include "hns_roce_device.h"
+
+void hns_roce_qp_event(struct hns_roce_dev *hr_dev, u32 qpn, int event_type)
+{
+ struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
+ struct device *dev = &hr_dev->pdev->dev;
+ struct hns_roce_qp *qp;
+
+ spin_lock(&qp_table->lock);
+
+ qp = __hns_roce_qp_lookup(hr_dev, qpn);
+ if (qp)
+ atomic_inc(&qp->refcount);
+
+ spin_unlock(&qp_table->lock);
+
+ if (!qp) {
+ dev_warn(dev, "Async event for bogus QP %08x\n", qpn);
+ return;
+ }
+
+ qp->event(qp, (enum hns_roce_event)event_type);
+
+ if (atomic_dec_and_test(&qp->refcount))
+ complete(&qp->free);
+}
--
1.9.1
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