scsi: hisi_sas: use array for v2 hw AXI errors

The code to print AXI errors in v2 hw driver is repetitive.

This patch condenses the code by looping an array of errors.

Also, a formatting error in one_bit_ecc_errors[] and
multi_bit_ecc_errors[] is fixed.

Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

2 files changed, 100 insertions, 137 deletions

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index ea4b5d65cbb3..d2d384b5efb7 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -96,6 +96,7 @@ struct hisi_sas_hw_error {
 	int shift;
 	const char *msg;
 	int reg;
+	const struct hisi_sas_hw_error *sub;
 };
 
 struct hisi_sas_phy {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 50a0fc8305f1..ee34f2ef1ae6 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -406,80 +406,70 @@ static const struct hisi_sas_hw_error one_bit_ecc_errors[] = {
 		.irq_msk = BIT(SAS_ECC_INTR_DQE_ECC_1B_OFF),
 		.msk = HGC_DQE_ECC_1B_ADDR_MSK,
 		.shift = HGC_DQE_ECC_1B_ADDR_OFF,
-		.msg = "hgc_dqe_acc1b_intr found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_dqe_acc1b_intr found: Ram address is 0x%08X\n",
 		.reg = HGC_DQE_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_IOST_ECC_1B_OFF),
 		.msk = HGC_IOST_ECC_1B_ADDR_MSK,
 		.shift = HGC_IOST_ECC_1B_ADDR_OFF,
-		.msg = "hgc_iost_acc1b_intr found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_iost_acc1b_intr found: Ram address is 0x%08X\n",
 		.reg = HGC_IOST_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_ITCT_ECC_1B_OFF),
 		.msk = HGC_ITCT_ECC_1B_ADDR_MSK,
 		.shift = HGC_ITCT_ECC_1B_ADDR_OFF,
-		.msg = "hgc_itct_acc1b_intr found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_itct_acc1b_intr found: am address is 0x%08X\n",
 		.reg = HGC_ITCT_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_IOSTLIST_ECC_1B_OFF),
 		.msk = HGC_LM_DFX_STATUS2_IOSTLIST_MSK,
 		.shift = HGC_LM_DFX_STATUS2_IOSTLIST_OFF,
-		.msg = "hgc_iostl_acc1b_intr found:  \
-				memory address is 0x%08X\n",
+		.msg = "hgc_iostl_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_LM_DFX_STATUS2,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_ITCTLIST_ECC_1B_OFF),
 		.msk = HGC_LM_DFX_STATUS2_ITCTLIST_MSK,
 		.shift = HGC_LM_DFX_STATUS2_ITCTLIST_OFF,
-		.msg = "hgc_itctl_acc1b_intr found: \
-				memory address is 0x%08X\n",
+		.msg = "hgc_itctl_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_LM_DFX_STATUS2,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_CQE_ECC_1B_OFF),
 		.msk = HGC_CQE_ECC_1B_ADDR_MSK,
 		.shift = HGC_CQE_ECC_1B_ADDR_OFF,
-		.msg = "hgc_cqe_acc1b_intr found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_cqe_acc1b_intr found: Ram address is 0x%08X\n",
 		.reg = HGC_CQE_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_1B_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM0_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM0_OFF,
-		.msg = "rxm_mem0_acc1b_intr found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem0_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_1B_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM1_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM1_OFF,
-		.msg = "rxm_mem1_acc1b_intr found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem1_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_1B_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM2_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM2_OFF,
-		.msg = "rxm_mem2_acc1b_intr found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem2_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_1B_OFF),
 		.msk = HGC_RXM_DFX_STATUS15_MEM3_MSK,
 		.shift = HGC_RXM_DFX_STATUS15_MEM3_OFF,
-		.msg = "rxm_mem3_acc1b_intr found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem3_acc1b_intr found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS15,
 	},
 };
@@ -489,80 +479,70 @@ static const struct hisi_sas_hw_error multi_bit_ecc_errors[] = {
 		.irq_msk = BIT(SAS_ECC_INTR_DQE_ECC_MB_OFF),
 		.msk = HGC_DQE_ECC_MB_ADDR_MSK,
 		.shift = HGC_DQE_ECC_MB_ADDR_OFF,
-		.msg = "hgc_dqe_accbad_intr (0x%x) found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_dqe_accbad_intr (0x%x) found: Ram address is 0x%08X\n",
 		.reg = HGC_DQE_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_IOST_ECC_MB_OFF),
 		.msk = HGC_IOST_ECC_MB_ADDR_MSK,
 		.shift = HGC_IOST_ECC_MB_ADDR_OFF,
-		.msg = "hgc_iost_accbad_intr (0x%x) found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_iost_accbad_intr (0x%x) found: Ram address is 0x%08X\n",
 		.reg = HGC_IOST_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_ITCT_ECC_MB_OFF),
 		.msk = HGC_ITCT_ECC_MB_ADDR_MSK,
 		.shift = HGC_ITCT_ECC_MB_ADDR_OFF,
-		.msg = "hgc_itct_accbad_intr (0x%x) found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_itct_accbad_intr (0x%x) found: Ram address is 0x%08X\n",
 		.reg = HGC_ITCT_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_IOSTLIST_ECC_MB_OFF),
 		.msk = HGC_LM_DFX_STATUS2_IOSTLIST_MSK,
 		.shift = HGC_LM_DFX_STATUS2_IOSTLIST_OFF,
-		.msg = "hgc_iostl_accbad_intr (0x%x) found: \
-				memory address is 0x%08X\n",
+		.msg = "hgc_iostl_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_LM_DFX_STATUS2,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_ITCTLIST_ECC_MB_OFF),
 		.msk = HGC_LM_DFX_STATUS2_ITCTLIST_MSK,
 		.shift = HGC_LM_DFX_STATUS2_ITCTLIST_OFF,
-		.msg = "hgc_itctl_accbad_intr (0x%x) found: \
-				memory address is 0x%08X\n",
+		.msg = "hgc_itctl_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_LM_DFX_STATUS2,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_CQE_ECC_MB_OFF),
 		.msk = HGC_CQE_ECC_MB_ADDR_MSK,
 		.shift = HGC_CQE_ECC_MB_ADDR_OFF,
-		.msg = "hgc_cqe_accbad_intr (0x%x) found: \
-				Ram address is 0x%08X\n",
+		.msg = "hgc_cqe_accbad_intr (0x%x) found: Ram address is 0x%08X\n",
 		.reg = HGC_CQE_ECC_ADDR,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_MB_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM0_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM0_OFF,
-		.msg = "rxm_mem0_accbad_intr (0x%x) found: \
-			memory address is 0x%08X\n",
+		.msg = "rxm_mem0_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_MB_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM1_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM1_OFF,
-		.msg = "rxm_mem1_accbad_intr (0x%x) found: \
-			memory address is 0x%08X\n",
+		.msg = "rxm_mem1_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_MB_OFF),
 		.msk = HGC_RXM_DFX_STATUS14_MEM2_MSK,
 		.shift = HGC_RXM_DFX_STATUS14_MEM2_OFF,
-		.msg = "rxm_mem2_accbad_intr (0x%x) found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem2_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS14,
 	},
 	{
 		.irq_msk = BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_MB_OFF),
 		.msk = HGC_RXM_DFX_STATUS15_MEM3_MSK,
 		.shift = HGC_RXM_DFX_STATUS15_MEM3_OFF,
-		.msg = "rxm_mem3_accbad_intr (0x%x) found: \
-				memory address is 0x%08X\n",
+		.msg = "rxm_mem3_accbad_intr (0x%x) found: memory address is 0x%08X\n",
 		.reg = HGC_RXM_DFX_STATUS15,
 	},
 };
@@ -2956,25 +2936,58 @@ static irqreturn_t fatal_ecc_int_v2_hw(int irq_no, void *p)
 	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"
+static const struct hisi_sas_hw_error axi_error[] = {
+	{ .msk = BIT(0), .msg = "IOST_AXI_W_ERR" },
+	{ .msk = BIT(1), .msg = "IOST_AXI_R_ERR" },
+	{ .msk = BIT(2), .msg = "ITCT_AXI_W_ERR" },
+	{ .msk = BIT(3), .msg = "ITCT_AXI_R_ERR" },
+	{ .msk = BIT(4), .msg = "SATA_AXI_W_ERR" },
+	{ .msk = BIT(5), .msg = "SATA_AXI_R_ERR" },
+	{ .msk = BIT(6), .msg = "DQE_AXI_R_ERR" },
+	{ .msk = BIT(7), .msg = "CQE_AXI_W_ERR" },
+	{},
+};
+
+static const struct hisi_sas_hw_error fifo_error[] = {
+	{ .msk = BIT(8),  .msg = "CQE_WINFO_FIFO" },
+	{ .msk = BIT(9),  .msg = "CQE_MSG_FIFIO" },
+	{ .msk = BIT(10), .msg = "GETDQE_FIFO" },
+	{ .msk = BIT(11), .msg = "CMDP_FIFO" },
+	{ .msk = BIT(12), .msg = "AWTCTRL_FIFO" },
+	{},
 };
 
-#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 const struct hisi_sas_hw_error fatal_axi_errors[] = {
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_WP_DEPTH_OFF),
+		.msg = "write pointer and depth",
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF),
+		.msg = "iptt no match slot",
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_RP_DEPTH_OFF),
+		.msg = "read pointer and depth",
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_AXI_OFF),
+		.reg = HGC_AXI_FIFO_ERR_INFO,
+		.sub = axi_error,
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_FIFO_OFF),
+		.reg = HGC_AXI_FIFO_ERR_INFO,
+		.sub = fifo_error,
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_LM_OFF),
+		.msg = "LM add/fetch list",
+	},
+	{
+		.irq_msk = BIT(ENT_INT_SRC3_ABT_OFF),
+		.msg = "SAS_HGC_ABT fetch LM list",
+	},
 };
 
 static irqreturn_t fatal_axi_int_v2_hw(int irq_no, void *p)
@@ -2982,98 +2995,47 @@ static irqreturn_t fatal_axi_int_v2_hw(int irq_no, void *p)
 	struct hisi_hba *hisi_hba = p;
 	u32 irq_value, irq_msk, err_value;
 	struct device *dev = hisi_hba->dev;
+	const struct hisi_sas_hw_error *axi_error;
+	int i;
 
 	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);
-			dev_warn(dev, "write pointer and depth error (0x%x) \
-			       found!\n",
-			       irq_value);
-			queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-		}
 
-		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);
-			dev_warn(dev, "iptt no match slot error (0x%x) found!\n",
-			      irq_value);
-			queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-		}
-
-		if (irq_value & BIT(ENT_INT_SRC3_RP_DEPTH_OFF)) {
-			dev_warn(dev, "read pointer and depth error (0x%x) \
-			       found!\n",
-			       irq_value);
-			queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-		}
-
-		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)) {
-					dev_warn(dev, "%s (0x%x) found!\n",
-					      axi_err_info[i], irq_value);
-					queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-				}
-			}
-		}
-
-		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 < ARRAY_SIZE(fatal_axi_errors); i++) {
+		axi_error = &fatal_axi_errors[i];
+		if (!(irq_value & axi_error->irq_msk))
+			continue;
 
-			for (i = 0; i < FIFO_ERR_NR; i++) {
-				if (err_value & BIT(AXI_ERR_NR + i)) {
-					dev_warn(dev, "%s (0x%x) found!\n",
-					      fifo_err_info[i], irq_value);
-					queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-				}
+		hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+				 1 << axi_error->shift);
+		if (axi_error->sub) {
+			const struct hisi_sas_hw_error *sub = axi_error->sub;
+
+			err_value = hisi_sas_read32(hisi_hba, axi_error->reg);
+			for (; sub->msk || sub->msg; sub++) {
+				if (!(err_value & sub->msk))
+					continue;
+				dev_warn(dev, "%s (0x%x) found!\n",
+					 sub->msg, irq_value);
+				queue_work(hisi_hba->wq, &hisi_hba->rst_work);
 			}
-
-		}
-
-		if (irq_value & BIT(ENT_INT_SRC3_LM_OFF)) {
-			hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
-					1 << ENT_INT_SRC3_LM_OFF);
-			dev_warn(dev, "LM add/fetch list error (0x%x) found!\n",
-			      irq_value);
-			queue_work(hisi_hba->wq, &hisi_hba->rst_work);
-		}
-
-		if (irq_value & BIT(ENT_INT_SRC3_ABT_OFF)) {
-			hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
-					1 << ENT_INT_SRC3_ABT_OFF);
-			dev_warn(dev, "SAS_HGC_ABT fetch LM list error (0x%x) found!\n",
-			      irq_value);
+		} else {
+			dev_warn(dev, "%s (0x%x) found!\n",
+				 axi_error->msg, irq_value);
 			queue_work(hisi_hba->wq, &hisi_hba->rst_work);
 		}
+	}
 
-		if (irq_value & BIT(ENT_INT_SRC3_ITC_INT_OFF)) {
-			u32 reg_val = hisi_sas_read32(hisi_hba, ITCT_CLR);
-			u32 dev_id = reg_val & ITCT_DEV_MSK;
-			struct hisi_sas_device *sas_dev =
-					&hisi_hba->devices[dev_id];
+	if (irq_value & BIT(ENT_INT_SRC3_ITC_INT_OFF)) {
+		u32 reg_val = hisi_sas_read32(hisi_hba, ITCT_CLR);
+		u32 dev_id = reg_val & ITCT_DEV_MSK;
+		struct hisi_sas_device *sas_dev = &hisi_hba->devices[dev_id];
 
-			hisi_sas_write32(hisi_hba, ITCT_CLR, 0);
-			dev_dbg(dev, "clear ITCT ok\n");
-			complete(sas_dev->completion);
-		}
+		hisi_sas_write32(hisi_hba, ITCT_CLR, 0);
+		dev_dbg(dev, "clear ITCT ok\n");
+		complete(sas_dev->completion);
 	}
 
 	hisi_sas_write32(hisi_hba, ENT_INT_SRC3, irq_value);