From: Xiang Chen <chenxian...@hisilicon.com>

For ECC 1bit error, logic can recover it, so we only print a warning.
For ECC multi-bit and AXI bus fatal error, we panic.

Note: once v3 hw controller reset support is added, the panic will
      be replaced by a controller reset, like v2 hw.

Signed-off-by: John Garry <john.ga...@huawei.com>
Signed-off-by: Xiang Chen <chenxian...@hisilicon.com>
---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 401 ++++++++++++++++++++++++++++++++-
 1 file changed, 399 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c 
b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 4169e6a..9add347 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -51,7 +51,39 @@
 #define CFG_SET_ABORTED_IPTT_OFF       0
 #define CFG_SET_ABORTED_IPTT_MSK       (0xfff << CFG_SET_ABORTED_IPTT_OFF)
 #define CFG_1US_TIMER_TRSH             0xcc
+#define HGC_LM_DFX_STATUS2             0x128
+#define HGC_LM_DFX_STATUS2_IOSTLIST_OFF                0
+#define HGC_LM_DFX_STATUS2_IOSTLIST_MSK        (0xfff <<\
+                                       HGC_LM_DFX_STATUS2_IOSTLIST_OFF)
+#define HGC_LM_DFX_STATUS2_ITCTLIST_OFF                12
+#define HGC_LM_DFX_STATUS2_ITCTLIST_MSK        (0x7ff <<\
+                                       HGC_LM_DFX_STATUS2_ITCTLIST_OFF)
+#define HGC_CQE_ECC_ADDR               0x13c
+#define HGC_CQE_ECC_1B_ADDR_OFF                0
+#define HGC_CQE_ECC_1B_ADDR_MSK                (0x3f << 
HGC_CQE_ECC_1B_ADDR_OFF)
+#define HGC_CQE_ECC_MB_ADDR_OFF                8
+#define HGC_CQE_ECC_MB_ADDR_MSK                (0x3f << 
HGC_CQE_ECC_MB_ADDR_OFF)
+#define HGC_IOST_ECC_ADDR              0x140
+#define HGC_IOST_ECC_1B_ADDR_OFF       0
+#define HGC_IOST_ECC_1B_ADDR_MSK       (0x3ff << HGC_IOST_ECC_1B_ADDR_OFF)
+#define HGC_IOST_ECC_MB_ADDR_OFF       16
+#define HGC_IOST_ECC_MB_ADDR_MSK       (0x3ff << HGC_IOST_ECC_MB_ADDR_OFF)
+#define HGC_DQE_ECC_ADDR               0x144
+#define HGC_DQE_ECC_1B_ADDR_OFF                0
+#define HGC_DQE_ECC_1B_ADDR_MSK                (0xfff << 
HGC_DQE_ECC_1B_ADDR_OFF)
+#define HGC_DQE_ECC_MB_ADDR_OFF                16
+#define HGC_DQE_ECC_MB_ADDR_MSK                (0xfff << 
HGC_DQE_ECC_MB_ADDR_OFF)
 #define CHNL_INT_STATUS                        0x148
+#define HGC_ITCT_ECC_ADDR              0x150
+#define HGC_ITCT_ECC_1B_ADDR_OFF       0
+#define HGC_ITCT_ECC_1B_ADDR_MSK       (0x3ff << HGC_ITCT_ECC_1B_ADDR_OFF)
+#define HGC_ITCT_ECC_MB_ADDR_OFF       16
+#define HGC_ITCT_ECC_MB_ADDR_MSK       (0x3ff << HGC_ITCT_ECC_MB_ADDR_OFF)
+#define HGC_AXI_FIFO_ERR_INFO  0x154
+#define AXI_ERR_INFO_OFF               0
+#define AXI_ERR_INFO_MSK               (0xff << AXI_ERR_INFO_OFF)
+#define FIFO_ERR_INFO_OFF              8
+#define FIFO_ERR_INFO_MSK              (0xff << FIFO_ERR_INFO_OFF)
 #define INT_COAL_EN                    0x19c
 #define OQ_INT_COAL_TIME               0x1a0
 #define OQ_INT_COAL_CNT                        0x1a4
@@ -85,6 +117,26 @@
 #define ENT_INT_SRC_MSK3_ENT95_MSK_MSK (0x1 << ENT_INT_SRC_MSK3_ENT95_MSK_OFF)
 #define SAS_ECC_INTR                   0x1e8
 #define SAS_ECC_INTR_MSK               0x1ec
+#define SAS_ECC_INTR_DQE_ECC_1B_OFF            0
+#define SAS_ECC_INTR_DQE_ECC_MB_OFF            1
+#define SAS_ECC_INTR_IOST_ECC_1B_OFF   2
+#define SAS_ECC_INTR_IOST_ECC_MB_OFF   3
+#define SAS_ECC_INTR_ITCT_ECC_MB_OFF   4
+#define SAS_ECC_INTR_ITCT_ECC_1B_OFF   5
+#define SAS_ECC_INTR_IOSTLIST_ECC_MB_OFF       6
+#define SAS_ECC_INTR_IOSTLIST_ECC_1B_OFF       7
+#define SAS_ECC_INTR_ITCTLIST_ECC_MB_OFF       8
+#define SAS_ECC_INTR_ITCTLIST_ECC_1B_OFF       9
+#define SAS_ECC_INTR_CQE_ECC_1B_OFF            10
+#define SAS_ECC_INTR_CQE_ECC_MB_OFF            11
+#define SAS_ECC_INTR_NCQ_MEM0_ECC_MB_OFF       12
+#define SAS_ECC_INTR_NCQ_MEM0_ECC_1B_OFF       13
+#define SAS_ECC_INTR_NCQ_MEM1_ECC_MB_OFF       14
+#define SAS_ECC_INTR_NCQ_MEM1_ECC_1B_OFF       15
+#define SAS_ECC_INTR_NCQ_MEM2_ECC_MB_OFF       16
+#define SAS_ECC_INTR_NCQ_MEM2_ECC_1B_OFF       17
+#define SAS_ECC_INTR_NCQ_MEM3_ECC_MB_OFF       18
+#define SAS_ECC_INTR_NCQ_MEM3_ECC_1B_OFF       19
 #define HGC_ERR_STAT_EN                        0x238
 #define DLVRY_Q_0_BASE_ADDR_LO         0x260
 #define DLVRY_Q_0_BASE_ADDR_HI         0x264
@@ -98,6 +150,20 @@
 #define COMPL_Q_0_DEPTH                        0x4e8
 #define COMPL_Q_0_WR_PTR               0x4ec
 #define COMPL_Q_0_RD_PTR               0x4f0
+#define HGC_RXM_DFX_STATUS14   0xae8
+#define HGC_RXM_DFX_STATUS14_MEM0_OFF          0
+#define HGC_RXM_DFX_STATUS14_MEM0_MSK          (0x1ff <<\
+                                               HGC_RXM_DFX_STATUS14_MEM0_OFF)
+#define HGC_RXM_DFX_STATUS14_MEM1_OFF          9
+#define HGC_RXM_DFX_STATUS14_MEM1_MSK          (0x1ff <<\
+                                               HGC_RXM_DFX_STATUS14_MEM1_OFF)
+#define HGC_RXM_DFX_STATUS14_MEM2_OFF          18
+#define HGC_RXM_DFX_STATUS14_MEM2_MSK          (0x1ff <<\
+                                               HGC_RXM_DFX_STATUS14_MEM2_OFF)
+#define HGC_RXM_DFX_STATUS15   0xaec
+#define HGC_RXM_DFX_STATUS15_MEM3_OFF          0
+#define HGC_RXM_DFX_STATUS15_MEM3_MSK          (0x1ff <<\
+                                               HGC_RXM_DFX_STATUS15_MEM3_OFF)
 #define AWQOS_AWCACHE_CFG      0xc84
 #define ARQOS_ARCACHE_CFG      0xc88
 
@@ -260,6 +326,7 @@
 #define ITCT_HDR_RTOLT_OFF             48
 #define ITCT_HDR_RTOLT_MSK             (0xffffULL << ITCT_HDR_RTOLT_OFF)
 
+#define HISI_SAS_FATAL_INT_NR  2
 
 struct hisi_sas_complete_v3_hdr {
        __le32 dw0;
@@ -1171,8 +1238,9 @@ static irqreturn_t int_chnl_int_v3_hw(int irq_no, void *p)
                                                irq_value1) {
                        if (irq_value1 & (CHL_INT1_DMAC_RX_ECC_ERR_MSK |
                                          CHL_INT1_DMAC_TX_ECC_ERR_MSK))
-                               panic("%s: DMAC RX/TX ecc bad error! (0x%x)",
-                                       dev_name(dev), irq_value1);
+                               panic("%s: DMAC RX/TX ecc bad error!"
+                                     " (0x%x)",
+                                     dev_name(dev), irq_value1);
 
                        hisi_sas_phy_write32(hisi_hba, phy_no,
                                             CHL_INT1, irq_value1);
@@ -1199,6 +1267,320 @@ static irqreturn_t int_chnl_int_v3_hw(int irq_no, void 
*p)
        return IRQ_HANDLED;
 }
 
+static void one_bit_ecc_error_process_v3_hw(struct hisi_hba *hisi_hba,
+               u32 irq_value)
+{
+       struct device *dev = hisi_hba->dev;
+       u32 reg_val;
+
+       if (irq_value & BIT(SAS_ECC_INTR_DQE_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_DQE_ECC_ADDR);
+               dev_info(dev, "hgc_dqe_acc1b_intr found: Ram address is 
0x%08X\n",
+                               (reg_val & HGC_DQE_ECC_1B_ADDR_MSK)
+                               >> HGC_DQE_ECC_1B_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_IOST_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_IOST_ECC_ADDR);
+               dev_info(dev, "hgc_iost_acc1b_intr found: Ram address is 
0x%08X\n",
+                               (reg_val & HGC_IOST_ECC_1B_ADDR_MSK)
+                               >> HGC_IOST_ECC_1B_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_ITCT_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_ITCT_ECC_ADDR);
+               dev_info(dev, "hgc_itct_acc1b_intr found: Ram address is 
0x%08X\n",
+                               (reg_val & HGC_ITCT_ECC_1B_ADDR_MSK)
+                               >> HGC_ITCT_ECC_1B_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_IOSTLIST_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
+               dev_info(dev, "hgc_iostl_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_LM_DFX_STATUS2_IOSTLIST_MSK)
+                               >> HGC_LM_DFX_STATUS2_IOSTLIST_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_ITCTLIST_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
+               dev_info(dev, "hgc_itctl_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_LM_DFX_STATUS2_ITCTLIST_MSK)
+                               >> HGC_LM_DFX_STATUS2_ITCTLIST_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_CQE_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_CQE_ECC_ADDR);
+               dev_info(dev, "hgc_cqe_acc1b_intr found: Ram address is 
0x%08X\n",
+                               (reg_val & HGC_CQE_ECC_1B_ADDR_MSK)
+                               >> HGC_CQE_ECC_1B_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               dev_info(dev, "rxm_mem0_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_RXM_DFX_STATUS14_MEM0_MSK)
+                               >> HGC_RXM_DFX_STATUS14_MEM0_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               dev_info(dev, "rxm_mem1_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_RXM_DFX_STATUS14_MEM1_MSK)
+                               >> HGC_RXM_DFX_STATUS14_MEM1_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               dev_info(dev, "rxm_mem2_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_RXM_DFX_STATUS14_MEM2_MSK)
+                               >> HGC_RXM_DFX_STATUS14_MEM2_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_1B_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS15);
+               dev_info(dev, "rxm_mem3_acc1b_intr found: memory address is 
0x%08X\n",
+                               (reg_val & HGC_RXM_DFX_STATUS15_MEM3_MSK)
+                               >> HGC_RXM_DFX_STATUS15_MEM3_OFF);
+       }
+
+}
+
+static void multi_bit_ecc_error_process_v3_hw(struct hisi_hba *hisi_hba,
+               u32 irq_value)
+{
+       u32 reg_val;
+       struct device *dev = hisi_hba->dev;
+
+       if (irq_value & BIT(SAS_ECC_INTR_DQE_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_DQE_ECC_ADDR);
+               panic("%s: hgc_dqe_accbad_intr (0x%x) found:"
+                     " Ram address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_DQE_ECC_MB_ADDR_MSK)
+                     >> HGC_DQE_ECC_MB_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_IOST_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_IOST_ECC_ADDR);
+               panic("%s: hgc_iost_accbad_intr (0x%x) found:"
+                     " Ram address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_IOST_ECC_MB_ADDR_MSK)
+                     >> HGC_IOST_ECC_MB_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_ITCT_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_ITCT_ECC_ADDR);
+               panic("%s: hgc_itct_accbad_intr (0x%x) found:"
+                     " Ram address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_ITCT_ECC_MB_ADDR_MSK)
+                     >> HGC_ITCT_ECC_MB_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_IOSTLIST_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
+               panic("%s: hgc_iostl_accbad_intr (0x%x) found:"
+                     " memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_LM_DFX_STATUS2_IOSTLIST_MSK)
+                     >> HGC_LM_DFX_STATUS2_IOSTLIST_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_ITCTLIST_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
+               panic("%s: hgc_itctl_accbad_intr (0x%x) found:"
+                     " memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_LM_DFX_STATUS2_ITCTLIST_MSK)
+                     >> HGC_LM_DFX_STATUS2_ITCTLIST_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_CQE_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_CQE_ECC_ADDR);
+               panic("%s: hgc_cqe_accbad_intr (0x%x) found:"
+                     " Ram address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_CQE_ECC_MB_ADDR_MSK)
+                     >> HGC_CQE_ECC_MB_ADDR_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               panic("%s: rxm_mem0_accbad_intr (0x%x) found:"
+                     "memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_RXM_DFX_STATUS14_MEM0_MSK)
+                     >> HGC_RXM_DFX_STATUS14_MEM0_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               panic("%s: rxm_mem1_accbad_intr (0x%x) found:"
+                     " memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_RXM_DFX_STATUS14_MEM1_MSK)
+                     >> HGC_RXM_DFX_STATUS14_MEM1_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
+               panic("%s: rxm_mem2_accbad_intr (0x%x) found:"
+                     " memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_RXM_DFX_STATUS14_MEM2_MSK)
+                     >> HGC_RXM_DFX_STATUS14_MEM2_OFF);
+       }
+
+       if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_MB_OFF)) {
+               reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS15);
+               panic("%s: rxm_mem3_accbad_intr (0x%x) found:"
+                     " memory address is 0x%08X\n",
+                     dev_name(dev), irq_value,
+                     (reg_val & HGC_RXM_DFX_STATUS15_MEM3_MSK)
+                     >> HGC_RXM_DFX_STATUS15_MEM3_OFF);
+       }
+
+}
+
+static irqreturn_t fatal_ecc_int_v3_hw(int irq_no, struct hisi_hba *hisi_hba)
+{
+       u32 irq_value, irq_msk;
+
+       irq_msk = hisi_sas_read32(hisi_hba, SAS_ECC_INTR_MSK);
+       hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, irq_msk | 0xffffffff);
+
+       irq_value = hisi_sas_read32(hisi_hba, SAS_ECC_INTR);
+       if (irq_value) {
+               multi_bit_ecc_error_process_v3_hw(hisi_hba, irq_value);
+               one_bit_ecc_error_process_v3_hw(hisi_hba, irq_value);
+       }
+
+       hisi_sas_write32(hisi_hba, SAS_ECC_INTR, irq_value);
+       hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, irq_msk);
+
+       return IRQ_HANDLED;
+}
+
+#define AXI_ERR_NR     8
+static const char axi_err_info[AXI_ERR_NR][32] = {
+       "IOST_AXI_W_ERR",
+       "IOST_AXI_R_ERR",
+       "ITCT_AXI_W_ERR",
+       "ITCT_AXI_R_ERR",
+       "SATA_AXI_W_ERR",
+       "SATA_AXI_R_ERR",
+       "DQE_AXI_R_ERR",
+       "CQE_AXI_W_ERR"
+};
+
+#define FIFO_ERR_NR    5
+static const char fifo_err_info[FIFO_ERR_NR][32] = {
+       "CQE_WINFO_FIFO",
+       "CQE_MSG_FIFIO",
+       "GETDQE_FIFO",
+       "CMDP_FIFO",
+       "AWTCTRL_FIFO"
+};
+
+static irqreturn_t fatal_axi_int_v3_hw(int irq_no, struct hisi_hba *hisi_hba)
+{
+       u32 irq_value, irq_msk, err_value;
+       struct device *dev = hisi_hba->dev;
+
+       irq_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK3);
+       hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk | 0xfffffffe);
+
+       irq_value = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
+       if (irq_value) {
+               if (irq_value & BIT(ENT_INT_SRC3_WP_DEPTH_OFF)) {
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                                       1 << ENT_INT_SRC3_WP_DEPTH_OFF);
+                       panic("%s: write pointer and depth error (0x%x) 
found!\n",
+                                       dev_name(dev), irq_value);
+               }
+
+               if (irq_value & BIT(ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF)) {
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                               1 << ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF);
+                       panic("%s: iptt no match slot error (0x%x) found!\n",
+                                       dev_name(dev), irq_value);
+               }
+
+               if (irq_value & BIT(ENT_INT_SRC3_RP_DEPTH_OFF))
+                       panic("%s: read pointer and depth error (0x%x) 
found!\n",
+                                       dev_name(dev), irq_value);
+
+               if (irq_value & BIT(ENT_INT_SRC3_AXI_OFF)) {
+                       int i;
+
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                                       1 << ENT_INT_SRC3_AXI_OFF);
+                       err_value = hisi_sas_read32(hisi_hba,
+                                                   HGC_AXI_FIFO_ERR_INFO);
+
+                       for (i = 0; i < AXI_ERR_NR; i++) {
+                               if (err_value & BIT(i))
+                                       panic("%s: %s (0x%x) found!\n",
+                                             dev_name(dev),
+                                             axi_err_info[i], irq_value);
+                       }
+               }
+
+               if (irq_value & BIT(ENT_INT_SRC3_FIFO_OFF)) {
+                       int i;
+
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                                       1 << ENT_INT_SRC3_FIFO_OFF);
+                       err_value = hisi_sas_read32(hisi_hba,
+                                                   HGC_AXI_FIFO_ERR_INFO);
+
+                       for (i = 0; i < FIFO_ERR_NR; i++) {
+                               if (err_value & BIT(AXI_ERR_NR + i))
+                                       panic("%s: %s (0x%x) found!\n",
+                                             dev_name(dev),
+                                             fifo_err_info[i], irq_value);
+                       }
+
+               }
+
+               if (irq_value & BIT(ENT_INT_SRC3_LM_OFF)) {
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                                       1 << ENT_INT_SRC3_LM_OFF);
+                       panic("%s: LM add/fetch list error (0x%x) found!\n",
+                                       dev_name(dev), irq_value);
+               }
+
+               if (irq_value & BIT(ENT_INT_SRC3_ABT_OFF)) {
+                       hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+                                       1 << ENT_INT_SRC3_ABT_OFF);
+                       panic("%s: SAS_HGC_ABT fetch LM list error (0x%x) 
found!\n",
+                                       dev_name(dev), irq_value);
+               }
+       }
+
+       hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk);
+
+       return IRQ_HANDLED;
+}
+
+static irqreturn_t fatal_interrupt_v3_hw(int irq_no, void *p)
+{
+       struct hisi_hba *hisi_hba = p;
+       u32 irq_value1, irq_value2;
+
+       irq_value1 = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
+       irq_value2 = hisi_sas_read32(hisi_hba, SAS_ECC_INTR);
+
+       if (irq_value1)
+               return fatal_axi_int_v3_hw(irq_no, hisi_hba);
+
+       if (irq_value2)
+               return fatal_ecc_int_v3_hw(irq_no, hisi_hba);
+
+       return IRQ_NONE;
+}
+
 static void slot_err_v3_hw(struct hisi_hba *hisi_hba,
                                struct sas_task *task,
                                struct hisi_sas_slot *slot)
@@ -1525,6 +1907,21 @@ static int interrupt_init_v3_hw(struct hisi_hba 
*hisi_hba)
                }
        }
 
+       irq = msi_vectors[11];
+       if (!irq) {
+               dev_err(dev, "irq init: fail map fatal interrupt 11\n");
+               return -ENOENT;
+       }
+
+       rc = devm_request_irq(dev, irq, fatal_interrupt_v3_hw, 0,
+                             DRV_NAME " fatal", hisi_hba);
+       if (rc) {
+               dev_err(dev,
+                       "irq init: could not request fatal interrupt 11, 
rc=%d\n",
+                       rc);
+               return -ENOENT;
+       }
+
        for (i = 0; i < hisi_hba->queue_count; i++) {
                int idx = i + 16; /* First cq interrupt is irq16 */
                struct hisi_sas_cq *cq = &hisi_hba->cq[i];
-- 
1.9.1

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