From: Haoyue Xu <xuhaoyue1@xxxxxxxxxxxxx>
Since ECC memory maintains a memory system immune to single-bit errors,
add support for correcting the 1bit-ECC error, which prevents a 1bit-ECC
error become an uncorrected type error. When a 1bit-ECC error happens in
the internal ram of the ROCE engine, such as the QPC table, as a 1bit-ECC
error caused by reading, the ROCE engine only corrects those 1bit ECC
errors by writing.
Signed-off-by: Haoyue Xu <xuhaoyue1@xxxxxxxxxxxxx>
Signed-off-by: Wenpeng Liang <liangwenpeng@xxxxxxxxxx>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 195 +++++++++++++++++++++
drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 12 ++
2 files changed, 207 insertions(+)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 782f09a7f8af..f3be9817a755 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -55,6 +55,42 @@ enum {
CMD_RST_PRC_EBUSY,
};
+enum ecc_resource_type {
+ ECC_RESOURCE_QPC = 0,
+ ECC_RESOURCE_CQC,
+ ECC_RESOURCE_MPT,
+ ECC_RESOURCE_SRQC,
+ ECC_RESOURCE_GMV,
+ ECC_RESOURCE_QPC_TIMER,
+ ECC_RESOURCE_CQC_TIMER,
+ ECC_RESOURCE_SCCC,
+ ECC_RESOURCE_COUNT,
+};
+
+static const struct {
+ char *name;
+ u8 read_bt0_op;
+ u8 write_bt0_op;
+} fmea_ram_res[] = {
+ { "ECC_RESOURCE_QPC",
+ HNS_ROCE_CMD_READ_QPC_BT0, HNS_ROCE_CMD_WRITE_QPC_BT0 },
+ { "ECC_RESOURCE_CQC",
+ HNS_ROCE_CMD_READ_CQC_BT0, HNS_ROCE_CMD_WRITE_CQC_BT0 },
+ { "ECC_RESOURCE_MPT",
+ HNS_ROCE_CMD_READ_MPT_BT0, HNS_ROCE_CMD_WRITE_MPT_BT0 },
+ { "ECC_RESOURCE_SRQC",
+ HNS_ROCE_CMD_READ_SRQC_BT0, HNS_ROCE_CMD_WRITE_SRQC_BT0 },
+ /* ECC_RESOURCE_GMV is handled by cmdq, not mailbox */
+ { "ECC_RESOURCE_GMV",
+ 0, 0 },
+ { "ECC_RESOURCE_QPC_TIMER",
+ HNS_ROCE_CMD_READ_QPC_TIMER_BT0, HNS_ROCE_CMD_WRITE_QPC_TIMER_BT0 },
+ { "ECC_RESOURCE_CQC_TIMER",
+ HNS_ROCE_CMD_READ_CQC_TIMER_BT0, HNS_ROCE_CMD_WRITE_CQC_TIMER_BT0 },
+ { "ECC_RESOURCE_SCCC",
+ HNS_ROCE_CMD_READ_SCCC_BT0, HNS_ROCE_CMD_WRITE_SCCC_BT0 },
+};
+
static inline void set_data_seg_v2(struct hns_roce_v2_wqe_data_seg *dseg,
struct ib_sge *sg)
{
@@ -6017,6 +6053,163 @@ static irqreturn_t abnormal_interrupt_basic(struct hns_roce_dev *hr_dev,
return IRQ_RETVAL(int_work);
}
+static int fmea_ram_ecc_query(struct hns_roce_dev *hr_dev,
+ struct fmea_ram_ecc *ecc_info)
+{
+ struct hns_roce_cmq_desc desc;
+ struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
+ int ret;
+
+ hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_QUERY_RAM_ECC, true);
+ ret = hns_roce_cmq_send(hr_dev, &desc, 1);
+ if (ret)
+ return ret;
+
+ ecc_info->is_ecc_err = hr_reg_read(req, QUERY_RAM_ECC_1BIT_ERR);
+ ecc_info->res_type = hr_reg_read(req, QUERY_RAM_ECC_RES_TYPE);
+ ecc_info->index = hr_reg_read(req, QUERY_RAM_ECC_TAG);
+
+ return 0;
+}
+
+static int fmea_recover_gmv(struct hns_roce_dev *hr_dev, u32 idx)
+{
+ struct hns_roce_cmq_desc desc;
+ struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
+ u32 addr_upper;
+ u32 addr_low;
+ int ret;
+
+ hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GMV_BT, true);
+ hr_reg_write(req, CFG_GMV_BT_IDX, idx);
+
+ ret = hns_roce_cmq_send(hr_dev, &desc, 1);
+ if (ret) {
+ dev_err(hr_dev->dev,
+ "failed to execute cmd to read gmv, ret = %d.\n", ret);
+ return ret;
+ }
+
+ addr_low = hr_reg_read(req, CFG_GMV_BT_BA_L);
+ addr_upper = hr_reg_read(req, CFG_GMV_BT_BA_H);
+
+ hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GMV_BT, false);
+ hr_reg_write(req, CFG_GMV_BT_BA_L, addr_low);
+ hr_reg_write(req, CFG_GMV_BT_BA_H, addr_upper);
+ hr_reg_write(req, CFG_GMV_BT_IDX, idx);
+
+ return hns_roce_cmq_send(hr_dev, &desc, 1);
+}
+
+static u64 fmea_get_ram_res_addr(u32 res_type, __le64 *data)
+{
+ if (res_type == ECC_RESOURCE_QPC_TIMER ||
+ res_type == ECC_RESOURCE_CQC_TIMER ||
+ res_type == ECC_RESOURCE_SCCC)
+ return le64_to_cpu(*data);
+
+ return le64_to_cpu(*data) << PAGE_SHIFT;
+}
+
+static int fmea_recover_others(struct hns_roce_dev *hr_dev, u32 res_type,
+ u32 index)
+{
+ u8 write_bt0_op = fmea_ram_res[res_type].write_bt0_op;
+ u8 read_bt0_op = fmea_ram_res[res_type].read_bt0_op;
+ struct hns_roce_cmd_mailbox *mailbox;
+ u64 addr;
+ int ret;
+
+ mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, read_bt0_op, index);
+ if (ret) {
+ dev_err(hr_dev->dev,
+ "failed to execute cmd to read fmea ram, ret = %d.\n",
+ ret);
+ goto err;
+ }
+
+ addr = fmea_get_ram_res_addr(res_type, mailbox->buf);
+
+ ret = hns_roce_cmd_mbox(hr_dev, addr, 0, write_bt0_op, index);
+ if (ret) {
+ dev_err(hr_dev->dev,
+ "failed to execute cmd to write fmea ram, ret = %d.\n",
+ ret);
+ goto err;
+ }
+
+err:
+ hns_roce_free_cmd_mailbox(hr_dev, mailbox);
+ return ret;
+}
+
+static void fmea_ram_ecc_recover(struct hns_roce_dev *hr_dev,
+ struct fmea_ram_ecc *ecc_info)
+{
+ u32 res_type = ecc_info->res_type;
+ u32 index = ecc_info->index;
+ int ret;
+
+ BUILD_BUG_ON(ARRAY_SIZE(fmea_ram_res) != ECC_RESOURCE_COUNT);
+
+ if (res_type >= ECC_RESOURCE_COUNT) {
+ dev_err(hr_dev->dev, "unsupported fmea ram ecc type %u.\n",
+ res_type);
+ return;
+ }
+
+ if (res_type == ECC_RESOURCE_GMV)
+ ret = fmea_recover_gmv(hr_dev, index);
+ else
+ ret = fmea_recover_others(hr_dev, res_type, index);
+ if (ret)
+ dev_err(hr_dev->dev,
+ "failed to recover %s, index = %u, ret = %d.\n",
+ fmea_ram_res[res_type].name, index, ret);
+}
+
+static void fmea_ram_ecc_work(struct work_struct *work)
+{
+ struct hns_roce_work *ecc_work =
+ container_of(work, struct hns_roce_work, work);
+ struct hns_roce_dev *hr_dev = ecc_work->hr_dev;
+ struct fmea_ram_ecc ecc_info = {};
+
+ if (fmea_ram_ecc_query(hr_dev, &ecc_info)) {
+ dev_err(hr_dev->dev, "failed to query fmea ram ecc.\n");
+ goto err;
+ }
+
+ if (!ecc_info.is_ecc_err) {
+ dev_err(hr_dev->dev, "there is no fmea ram ecc err found.\n");
+ goto err;
+ }
+
+ fmea_ram_ecc_recover(hr_dev, &ecc_info);
+
+err:
+ kfree(ecc_work);
+}
+
+static irqreturn_t abnormal_interrupt_others(struct hns_roce_dev *hr_dev)
+{
+ struct hns_roce_work *ecc_work;
+
+ ecc_work = kzalloc(sizeof(*ecc_work), GFP_ATOMIC);
+ if (!ecc_work)
+ return IRQ_NONE;
+
+ ecc_work->hr_dev = hr_dev;
+ INIT_WORK(&ecc_work->work, fmea_ram_ecc_work);
+ queue_work(hr_dev->irq_workq, &ecc_work->work);
+
+ return IRQ_HANDLED;
+}
+
static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
{
struct hns_roce_dev *hr_dev = dev_id;
@@ -6027,6 +6220,8 @@ static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
if (int_st)
int_work = abnormal_interrupt_basic(hr_dev, int_st);
+ else if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
+ int_work = abnormal_interrupt_others(hr_dev);
else
dev_err(hr_dev->dev, "there is no abnormal irq found.\n");
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index e6186149ef19..f96debac30fe 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -250,6 +250,7 @@ enum hns_roce_opcode_type {
HNS_ROCE_OPC_CFG_GMV_TBL = 0x850f,
HNS_ROCE_OPC_CFG_GMV_BT = 0x8510,
HNS_ROCE_OPC_EXT_CFG = 0x8512,
+ HNS_ROCE_QUERY_RAM_ECC = 0x8513,
HNS_SWITCH_PARAMETER_CFG = 0x1033,
};
@@ -1107,6 +1108,11 @@ enum {
#define CFG_GMV_BT_BA_H CMQ_REQ_FIELD_LOC(51, 32)
#define CFG_GMV_BT_IDX CMQ_REQ_FIELD_LOC(95, 64)
+/* Fields of HNS_ROCE_QUERY_RAM_ECC */
+#define QUERY_RAM_ECC_1BIT_ERR CMQ_REQ_FIELD_LOC(31, 0)
+#define QUERY_RAM_ECC_RES_TYPE CMQ_REQ_FIELD_LOC(63, 32)
+#define QUERY_RAM_ECC_TAG CMQ_REQ_FIELD_LOC(95, 64)
+
struct hns_roce_cfg_sgid_tb {
__le32 table_idx_rsv;
__le32 vf_sgid_l;
@@ -1343,6 +1349,12 @@ struct hns_roce_dip {
struct list_head node; /* all dips are on a list */
};
+struct fmea_ram_ecc {
+ u32 is_ecc_err;
+ u32 res_type;
+ u32 index;
+};
+
/* only for RNR timeout issue of HIP08 */
#define HNS_ROCE_CLOCK_ADJUST 1000
#define HNS_ROCE_MAX_CQ_PERIOD 65
--
2.33.0
