From 971afae7cf4f784c37ea89459c1b3627bcf601ff Mon Sep 17 00:00:00 2001 From: Luo Jiaxing Date: Wed, 19 Dec 2018 23:56:44 +0800 Subject: [PATCH] scsi: hisi_sas: Add debugfs CQ file and add file operations This patch create debugfs file for CQ and add file operations. Signed-off-by: Luo Jiaxing Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 70 +++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index fbd9b4aab628..ce0a9dcc355b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -2630,12 +2630,68 @@ static const struct file_operations hisi_sas_debugfs_port_fops = { .owner = THIS_MODULE, }; +static int hisi_sas_show_row_32(struct seq_file *s, int index, + int sz, u32 *ptr) +{ + int i; + + /* completion header size not fixed per HW version */ + seq_printf(s, "index %04d:\n\t", index); + for (i = 1; i <= sz / 4; i++, ptr++) { + if (!(i % 4)) + seq_puts(s, "\n\t"); + } + seq_puts(s, "\n"); + + return 0; +} + +static int hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr) +{ + struct hisi_sas_cq *cq = cq_ptr; + struct hisi_hba *hisi_hba = cq->hisi_hba; + void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id]; + void *complete_hdr = complete_queue + + (hisi_hba->hw->complete_hdr_size * slot); + + return hisi_sas_show_row_32(s, slot, + hisi_hba->hw->complete_hdr_size, + complete_hdr); +} + +static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p) +{ + struct hisi_sas_cq *cq = s->private; + int slot, ret; + + for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) { + ret = hisi_sas_cq_show_slot(s, slot, cq); + if (ret) + return ret; + } + return 0; +} + +static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private); +} + +static const struct file_operations hisi_sas_debugfs_cq_fops = { + .open = hisi_sas_debugfs_cq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba) { struct dentry *dump_dentry; struct dentry *dentry; char name[256]; int p; + int c; /* Create dump dir inside device dir */ dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir); @@ -2661,6 +2717,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba) goto fail; } + /* Create CQ dir and files */ + dentry = debugfs_create_dir("cq", dump_dentry); + if (!dentry) + goto fail; + + for (c = 0; c < hisi_hba->queue_count; c++) { + snprintf(name, 256, "%d", c); + + if (!debugfs_create_file(name, 0400, dentry, + &hisi_hba->cq[c], + &hisi_sas_debugfs_cq_fops)) + goto fail; + } + return; fail: debugfs_remove_recursive(hisi_hba->debugfs_dir); -- 2.11.0