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-rw-r--r--drivers/scsi/hisi_sas/hisi_sas.h15
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v3_hw.c251
2 files changed, 266 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 873bfffa626d..2401a9575215 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -44,6 +44,7 @@
#define HISI_SAS_IOST_ITCT_CACHE_NUM 64
#define HISI_SAS_IOST_ITCT_CACHE_DW_SZ 10
+#define HISI_SAS_FIFO_DATA_DW_SIZE 32
#define HISI_SAS_STATUS_BUF_SZ (sizeof(struct hisi_sas_status_buffer))
#define HISI_SAS_COMMAND_TABLE_SZ (sizeof(union hisi_sas_command_table))
@@ -154,6 +155,16 @@ enum hisi_sas_phy_event {
HISI_PHYES_NUM,
};
+struct hisi_sas_debugfs_fifo {
+ u32 signal_sel;
+ u32 dump_msk;
+ u32 dump_mode;
+ u32 trigger;
+ u32 trigger_msk;
+ u32 trigger_mode;
+ u32 rd_data[HISI_SAS_FIFO_DATA_DW_SIZE];
+};
+
struct hisi_sas_phy {
struct work_struct works[HISI_PHYES_NUM];
struct hisi_hba *hisi_hba;
@@ -175,6 +186,9 @@ struct hisi_sas_phy {
enum sas_linkrate maximum_linkrate;
int enable;
atomic_t down_cnt;
+
+ /* Trace FIFO */
+ struct hisi_sas_debugfs_fifo fifo;
};
struct hisi_sas_port {
@@ -474,6 +488,7 @@ struct hisi_hba {
struct dentry *debugfs_dir;
struct dentry *debugfs_dump_dentry;
struct dentry *debugfs_bist_dentry;
+ struct dentry *debugfs_fifo_dentry;
};
/* Generic HW DMA host memory structures */
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 4cc344ca121c..4580e081e489 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -303,6 +303,19 @@
#define ERR_CNT_INVLD_DW (PORT_BASE + 0x390)
#define ERR_CNT_CODE_ERR (PORT_BASE + 0x394)
#define ERR_CNT_DISP_ERR (PORT_BASE + 0x398)
+#define DFX_FIFO_CTRL (PORT_BASE + 0x3a0)
+#define DFX_FIFO_CTRL_TRIGGER_MODE_OFF 0
+#define DFX_FIFO_CTRL_TRIGGER_MODE_MSK (0x7 << DFX_FIFO_CTRL_TRIGGER_MODE_OFF)
+#define DFX_FIFO_CTRL_DUMP_MODE_OFF 3
+#define DFX_FIFO_CTRL_DUMP_MODE_MSK (0x7 << DFX_FIFO_CTRL_DUMP_MODE_OFF)
+#define DFX_FIFO_CTRL_SIGNAL_SEL_OFF 6
+#define DFX_FIFO_CTRL_SIGNAL_SEL_MSK (0xF << DFX_FIFO_CTRL_SIGNAL_SEL_OFF)
+#define DFX_FIFO_CTRL_DUMP_DISABLE_OFF 10
+#define DFX_FIFO_CTRL_DUMP_DISABLE_MSK (0x1 << DFX_FIFO_CTRL_DUMP_DISABLE_OFF)
+#define DFX_FIFO_TRIGGER (PORT_BASE + 0x3a4)
+#define DFX_FIFO_TRIGGER_MSK (PORT_BASE + 0x3a8)
+#define DFX_FIFO_DUMP_MSK (PORT_BASE + 0x3aC)
+#define DFX_FIFO_RD_DATA (PORT_BASE + 0x3b0)
#define DEFAULT_ITCT_HW 2048 /* reset value, not reprogrammed */
#if (HISI_SAS_MAX_DEVICES > DEFAULT_ITCT_HW)
@@ -4153,6 +4166,243 @@ static const struct file_operations debugfs_phy_down_cnt_v3_hw_fops = {
.owner = THIS_MODULE,
};
+enum fifo_dump_mode_v3_hw {
+ FIFO_DUMP_FORVER = (1U << 0),
+ FIFO_DUMP_AFTER_TRIGGER = (1U << 1),
+ FIFO_DUMP_UNTILL_TRIGGER = (1U << 2),
+};
+
+enum fifo_trigger_mode_v3_hw {
+ FIFO_TRIGGER_EDGE = (1U << 0),
+ FIFO_TRIGGER_SAME_LEVEL = (1U << 1),
+ FIFO_TRIGGER_DIFF_LEVEL = (1U << 2),
+};
+
+static int debugfs_is_fifo_config_valid_v3_hw(struct hisi_sas_phy *phy)
+{
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+
+ if (phy->fifo.signal_sel > 0xf) {
+ dev_info(hisi_hba->dev, "Invalid signal select: %u\n",
+ phy->fifo.signal_sel);
+ return -EINVAL;
+ }
+
+ switch (phy->fifo.dump_mode) {
+ case FIFO_DUMP_FORVER:
+ case FIFO_DUMP_AFTER_TRIGGER:
+ case FIFO_DUMP_UNTILL_TRIGGER:
+ break;
+ default:
+ dev_info(hisi_hba->dev, "Invalid dump mode: %u\n",
+ phy->fifo.dump_mode);
+ return -EINVAL;
+ }
+
+ /* when FIFO_DUMP_FORVER, no need to check trigger_mode */
+ if (phy->fifo.dump_mode == FIFO_DUMP_FORVER)
+ return 0;
+
+ switch (phy->fifo.trigger_mode) {
+ case FIFO_TRIGGER_EDGE:
+ case FIFO_TRIGGER_SAME_LEVEL:
+ case FIFO_TRIGGER_DIFF_LEVEL:
+ break;
+ default:
+ dev_info(hisi_hba->dev, "Invalid trigger mode: %u\n",
+ phy->fifo.trigger_mode);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int debugfs_update_fifo_config_v3_hw(struct hisi_sas_phy *phy)
+{
+ u32 trigger_mode = phy->fifo.trigger_mode;
+ u32 signal_sel = phy->fifo.signal_sel;
+ u32 dump_mode = phy->fifo.dump_mode;
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ int phy_no = phy->sas_phy.id;
+ u32 reg_val;
+ int res;
+
+ /* Check the validity of trace FIFO configuration */
+ res = debugfs_is_fifo_config_valid_v3_hw(phy);
+ if (res)
+ return res;
+
+ reg_val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ /* Disable trace FIFO before update configuration */
+ reg_val |= DFX_FIFO_CTRL_DUMP_DISABLE_MSK;
+
+ /* Update trace FIFO configuration */
+ reg_val &= ~(DFX_FIFO_CTRL_DUMP_MODE_MSK |
+ DFX_FIFO_CTRL_SIGNAL_SEL_MSK |
+ DFX_FIFO_CTRL_TRIGGER_MODE_MSK);
+
+ reg_val |= ((trigger_mode << DFX_FIFO_CTRL_TRIGGER_MODE_OFF) |
+ (dump_mode << DFX_FIFO_CTRL_DUMP_MODE_OFF) |
+ (signal_sel << DFX_FIFO_CTRL_SIGNAL_SEL_OFF));
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_CTRL, reg_val);
+
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_DUMP_MSK,
+ phy->fifo.dump_msk);
+
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_TRIGGER,
+ phy->fifo.trigger);
+
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_TRIGGER_MSK,
+ phy->fifo.trigger_msk);
+
+ /* Enable trace FIFO after updated configuration */
+ reg_val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ reg_val &= ~DFX_FIFO_CTRL_DUMP_DISABLE_MSK;
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_CTRL, reg_val);
+
+ return 0;
+}
+
+static ssize_t debugfs_fifo_update_cfg_v3_hw_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct hisi_sas_phy *phy = filp->private_data;
+ bool update;
+ int val;
+
+ val = kstrtobool_from_user(buf, count, &update);
+ if (val)
+ return val;
+
+ if (update != 1)
+ return -EINVAL;
+
+ val = debugfs_update_fifo_config_v3_hw(phy);
+ if (val)
+ return val;
+
+ return count;
+}
+
+static const struct file_operations debugfs_fifo_update_cfg_v3_hw_fops = {
+ .open = simple_open,
+ .write = debugfs_fifo_update_cfg_v3_hw_write,
+ .owner = THIS_MODULE,
+};
+
+static void debugfs_read_fifo_data_v3_hw(struct hisi_sas_phy *phy)
+{
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ u32 *buf = phy->fifo.rd_data;
+ int phy_no = phy->sas_phy.id;
+ u32 val;
+ int i;
+
+ memset(buf, 0, sizeof(phy->fifo.rd_data));
+
+ /* Disable trace FIFO before read data */
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ val |= DFX_FIFO_CTRL_DUMP_DISABLE_MSK;
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_CTRL, val);
+
+ for (i = 0; i < HISI_SAS_FIFO_DATA_DW_SIZE; i++) {
+ val = hisi_sas_phy_read32(hisi_hba, phy_no,
+ DFX_FIFO_RD_DATA);
+ buf[i] = val;
+ }
+
+ /* Enable trace FIFO after read data */
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ val &= ~DFX_FIFO_CTRL_DUMP_DISABLE_MSK;
+ hisi_sas_phy_write32(hisi_hba, phy_no, DFX_FIFO_CTRL, val);
+}
+
+static int debugfs_fifo_data_v3_hw_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_phy *phy = s->private;
+
+ debugfs_read_fifo_data_v3_hw(phy);
+
+ debugfs_show_row_32_v3_hw(s, 0, HISI_SAS_FIFO_DATA_DW_SIZE * 4,
+ phy->fifo.rd_data);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(debugfs_fifo_data_v3_hw);
+
+static void debugfs_fifo_init_v3_hw(struct hisi_hba *hisi_hba)
+{
+ int phy_no;
+
+ hisi_hba->debugfs_fifo_dentry =
+ debugfs_create_dir("fifo", hisi_hba->debugfs_dir);
+
+ for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct dentry *port_dentry;
+ char name[256];
+ u32 val;
+
+ /* get default configuration for trace FIFO */
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ val &= DFX_FIFO_CTRL_DUMP_MODE_MSK;
+ val >>= DFX_FIFO_CTRL_DUMP_MODE_OFF;
+ phy->fifo.dump_mode = val;
+
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ val &= DFX_FIFO_CTRL_TRIGGER_MODE_MSK;
+ val >>= DFX_FIFO_CTRL_TRIGGER_MODE_OFF;
+ phy->fifo.trigger_mode = val;
+
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_CTRL);
+ val &= DFX_FIFO_CTRL_SIGNAL_SEL_MSK;
+ val >>= DFX_FIFO_CTRL_SIGNAL_SEL_OFF;
+ phy->fifo.signal_sel = val;
+
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_DUMP_MSK);
+ phy->fifo.dump_msk = val;
+
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_TRIGGER);
+ phy->fifo.trigger = val;
+ val = hisi_sas_phy_read32(hisi_hba, phy_no, DFX_FIFO_TRIGGER_MSK);
+ phy->fifo.trigger_msk = val;
+
+ snprintf(name, 256, "%d", phy_no);
+ port_dentry = debugfs_create_dir(name,
+ hisi_hba->debugfs_fifo_dentry);
+
+ debugfs_create_file("update_config", 0200, port_dentry, phy,
+ &debugfs_fifo_update_cfg_v3_hw_fops);
+
+ debugfs_create_file("signal_sel", 0600, port_dentry,
+ &phy->fifo.signal_sel,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("dump_msk", 0600, port_dentry,
+ &phy->fifo.dump_msk,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("dump_mode", 0600, port_dentry,
+ &phy->fifo.dump_mode,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("trigger_mode", 0600, port_dentry,
+ &phy->fifo.trigger_mode,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("trigger", 0600, port_dentry,
+ &phy->fifo.trigger,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("trigger_msk", 0600, port_dentry,
+ &phy->fifo.trigger_msk,
+ &debugfs_v3_hw_fops);
+
+ debugfs_create_file("fifo_data", 0400, port_dentry, phy,
+ &debugfs_fifo_data_v3_hw_fops);
+ }
+}
+
static void debugfs_work_handler_v3_hw(struct work_struct *work)
{
struct hisi_hba *hisi_hba =
@@ -4388,6 +4638,7 @@ static void debugfs_init_v3_hw(struct hisi_hba *hisi_hba)
debugfs_create_dir("dump", hisi_hba->debugfs_dir);
debugfs_phy_down_cnt_init_v3_hw(hisi_hba);
+ debugfs_fifo_init_v3_hw(hisi_hba);
for (i = 0; i < hisi_sas_debugfs_dump_count; i++) {
if (debugfs_alloc_v3_hw(hisi_hba, i)) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-23 18:22:39 +0000