[PATCH 6/8] scsi: hisi_sas: Add BIST support for fixed code pattern
From: John Garry
Date: Tue Sep 01 2020 - 07:22:13 EST
From: Luo Jiaxing <luojiaxing@xxxxxxxxxx>
Add BIST support for fixed code pattern.
Through the new debugfs interface, the user can select fixed code pattern
if they want. We added two new interfaces fixed_code and fixed_code1 to
configure fixed code pattern.
Signed-off-by: Luo Jiaxing <luojiaxing@xxxxxxxxxx>
Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
---
drivers/scsi/hisi_sas/hisi_sas.h | 22 +++++++++++++
drivers/scsi/hisi_sas/hisi_sas_main.c | 25 ++++++---------
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 43 ++++++++++++++++----------
3 files changed, 59 insertions(+), 31 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index ce6a7d212afe..c617ac8d8315 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -285,6 +285,27 @@ enum hisi_sas_debugfs_bist_ffe_cfg {
FFE_CFG_MAX
};
+enum hisi_sas_debugfs_bist_fixed_code {
+ FIXED_CODE,
+ FIXED_CODE_1,
+ FIXED_CODE_MAX
+};
+
+enum {
+ HISI_SAS_BIST_CODE_MODE_PRBS7,
+ HISI_SAS_BIST_CODE_MODE_PRBS23,
+ HISI_SAS_BIST_CODE_MODE_PRBS31,
+ HISI_SAS_BIST_CODE_MODE_JTPAT,
+ HISI_SAS_BIST_CODE_MODE_CJTPAT,
+ HISI_SAS_BIST_CODE_MODE_SCRAMBED_0,
+ HISI_SAS_BIST_CODE_MODE_TRAIN,
+ HISI_SAS_BIST_CODE_MODE_TRAIN_DONE,
+ HISI_SAS_BIST_CODE_MODE_HFTP,
+ HISI_SAS_BIST_CODE_MODE_MFTP,
+ HISI_SAS_BIST_CODE_MODE_LFTP,
+ HISI_SAS_BIST_CODE_MODE_FIXED_DATA,
+};
+
struct hisi_sas_hw {
int (*hw_init)(struct hisi_hba *hisi_hba);
void (*setup_itct)(struct hisi_hba *hisi_hba,
@@ -453,6 +474,7 @@ struct hisi_hba {
u32 debugfs_bist_cnt;
int debugfs_bist_enable;
u32 debugfs_bist_ffe[HISI_SAS_MAX_PHYS][FFE_CFG_MAX];
+ u32 debugfs_bist_fixed_code[FIXED_CODE_MAX];
/* debugfs memories */
/* Put Global AXI and RAS Register into register array */
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 6cd9b25fbbe7..6d1e42389cd6 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -3334,21 +3334,6 @@ enum {
HISI_SAS_BIST_LOOPBACK_MODE_REMOTE,
};
-enum {
- HISI_SAS_BIST_CODE_MODE_PRBS7 = 0,
- HISI_SAS_BIST_CODE_MODE_PRBS23,
- HISI_SAS_BIST_CODE_MODE_PRBS31,
- HISI_SAS_BIST_CODE_MODE_JTPAT,
- HISI_SAS_BIST_CODE_MODE_CJTPAT,
- HISI_SAS_BIST_CODE_MODE_SCRAMBED_0,
- HISI_SAS_BIST_CODE_MODE_TRAIN,
- HISI_SAS_BIST_CODE_MODE_TRAIN_DONE,
- HISI_SAS_BIST_CODE_MODE_HFTP,
- HISI_SAS_BIST_CODE_MODE_MFTP,
- HISI_SAS_BIST_CODE_MODE_LFTP,
- HISI_SAS_BIST_CODE_MODE_FIXED_DATA,
-};
-
static const struct {
int value;
char *name;
@@ -3966,6 +3951,16 @@ static void hisi_sas_debugfs_bist_init(struct hisi_hba *hisi_hba)
hisi_hba->debugfs_bist_dentry, hisi_hba,
&hisi_sas_debugfs_bist_code_mode_ops);
+ debugfs_create_file("fixed_code", 0600,
+ hisi_hba->debugfs_bist_dentry,
+ &hisi_hba->debugfs_bist_fixed_code[0],
+ &hisi_sas_debugfs_ops);
+
+ debugfs_create_file("fixed_code_1", 0600,
+ hisi_hba->debugfs_bist_dentry,
+ &hisi_hba->debugfs_bist_fixed_code[1],
+ &hisi_sas_debugfs_ops);
+
debugfs_create_file("phy_id", 0600, hisi_hba->debugfs_bist_dentry,
hisi_hba, &hisi_sas_debugfs_bist_phy_ops);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index f5d566832d6c..8522f693033f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -3033,14 +3033,16 @@ static int debugfs_set_bist_v3_hw(struct hisi_hba *hisi_hba, bool enable)
u32 *ffe = hisi_hba->debugfs_bist_ffe[phy_no];
u32 code_mode = hisi_hba->debugfs_bist_code_mode;
u32 path_mode = hisi_hba->debugfs_bist_mode;
+ u32 *fix_code = &hisi_hba->debugfs_bist_fixed_code[0];
struct device *dev = hisi_hba->dev;
- dev_info(dev, "BIST info:phy%d link_rate=%d code_mode=%d path_mode=%d ffe={0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x}\n",
+ dev_info(dev, "BIST info:phy%d link_rate=%d code_mode=%d path_mode=%d ffe={0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x} fixed_code={0x%x, 0x%x}\n",
phy_no, linkrate, code_mode, path_mode,
ffe[FFE_SAS_1_5_GBPS], ffe[FFE_SAS_3_0_GBPS],
ffe[FFE_SAS_6_0_GBPS], ffe[FFE_SAS_12_0_GBPS],
ffe[FFE_SATA_1_5_GBPS], ffe[FFE_SATA_3_0_GBPS],
- ffe[FFE_SATA_6_0_GBPS]);
+ ffe[FFE_SATA_6_0_GBPS], fix_code[FIXED_CODE],
+ fix_code[FIXED_CODE_1]);
mode_tmp = path_mode ? 2 : 1;
if (enable) {
/* some preparations before bist test */
@@ -3057,28 +3059,37 @@ static int debugfs_set_bist_v3_hw(struct hisi_hba *hisi_hba, bool enable)
/* set code mode of bit test */
reg_val = hisi_sas_phy_read32(hisi_hba, phy_no,
SAS_PHY_BIST_CTRL);
- reg_val &= ~(CFG_BIST_MODE_SEL_MSK |
- CFG_LOOP_TEST_MODE_MSK |
- CFG_RX_BIST_EN_MSK |
- CFG_TX_BIST_EN_MSK |
- CFG_BIST_TEST_MSK);
+ reg_val &= ~(CFG_BIST_MODE_SEL_MSK | CFG_LOOP_TEST_MODE_MSK |
+ CFG_RX_BIST_EN_MSK | CFG_TX_BIST_EN_MSK |
+ CFG_BIST_TEST_MSK);
reg_val |= ((code_mode << CFG_BIST_MODE_SEL_OFF) |
(mode_tmp << CFG_LOOP_TEST_MODE_OFF) |
CFG_BIST_TEST_MSK);
- hisi_sas_phy_write32(hisi_hba, phy_no,
- SAS_PHY_BIST_CTRL, reg_val);
+ hisi_sas_phy_write32(hisi_hba, phy_no, SAS_PHY_BIST_CTRL,
+ reg_val);
/* set the bist init value */
- hisi_sas_phy_write32(hisi_hba, phy_no,
- SAS_PHY_BIST_CODE,
- SAS_PHY_BIST_CODE_INIT);
- hisi_sas_phy_write32(hisi_hba, phy_no, SAS_PHY_BIST_CODE1,
- SAS_PHY_BIST_CODE1_INIT);
+ if (code_mode == HISI_SAS_BIST_CODE_MODE_FIXED_DATA) {
+ reg_val = hisi_hba->debugfs_bist_fixed_code[0];
+ hisi_sas_phy_write32(hisi_hba, phy_no,
+ SAS_PHY_BIST_CODE, reg_val);
+
+ reg_val = hisi_hba->debugfs_bist_fixed_code[1];
+ hisi_sas_phy_write32(hisi_hba, phy_no,
+ SAS_PHY_BIST_CODE1, reg_val);
+ } else {
+ hisi_sas_phy_write32(hisi_hba, phy_no,
+ SAS_PHY_BIST_CODE,
+ SAS_PHY_BIST_CODE_INIT);
+ hisi_sas_phy_write32(hisi_hba, phy_no,
+ SAS_PHY_BIST_CODE1,
+ SAS_PHY_BIST_CODE1_INIT);
+ }
mdelay(100);
reg_val |= (CFG_RX_BIST_EN_MSK | CFG_TX_BIST_EN_MSK);
- hisi_sas_phy_write32(hisi_hba, phy_no,
- SAS_PHY_BIST_CTRL, reg_val);
+ hisi_sas_phy_write32(hisi_hba, phy_no, SAS_PHY_BIST_CTRL,
+ reg_val);
/* clear error bit */
mdelay(100);
--
2.26.2