rsxx: Adding in debugfs entries.
Adding debugfs entries to help with debugging and testing and
testing code.
pci_regs:
This entry will spit out all of the data stored on the BAR.
stats:
This entry will display all of the driver stats for each
DMA channel.
cram:
This will allow read/write ability to the CRAM address space
on our adapter's CPU.
Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Philip J Kelleher
Jens Axboe
parent
62302508f2
commit
36f988e978
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@ -31,6 +31,8 @@
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#include <linux/slab.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/genhd.h>
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#include <linux/idr.h>
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@ -58,6 +60,274 @@ MODULE_PARM_DESC(sync_start, "On by Default: Driver load will not complete "
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static DEFINE_IDA(rsxx_disk_ida);
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static DEFINE_SPINLOCK(rsxx_ida_lock);
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/* --------------------Debugfs Setup ------------------- */
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struct rsxx_cram {
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u32 f_pos;
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u32 offset;
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void *i_private;
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};
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static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p)
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{
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struct rsxx_cardinfo *card = m->private;
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seq_printf(m, "HWID 0x%08x\n",
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ioread32(card->regmap + HWID));
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seq_printf(m, "SCRATCH 0x%08x\n",
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ioread32(card->regmap + SCRATCH));
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seq_printf(m, "IER 0x%08x\n",
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ioread32(card->regmap + IER));
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seq_printf(m, "IPR 0x%08x\n",
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ioread32(card->regmap + IPR));
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seq_printf(m, "CREG_CMD 0x%08x\n",
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ioread32(card->regmap + CREG_CMD));
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seq_printf(m, "CREG_ADD 0x%08x\n",
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ioread32(card->regmap + CREG_ADD));
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seq_printf(m, "CREG_CNT 0x%08x\n",
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ioread32(card->regmap + CREG_CNT));
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seq_printf(m, "CREG_STAT 0x%08x\n",
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ioread32(card->regmap + CREG_STAT));
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seq_printf(m, "CREG_DATA0 0x%08x\n",
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ioread32(card->regmap + CREG_DATA0));
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seq_printf(m, "CREG_DATA1 0x%08x\n",
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ioread32(card->regmap + CREG_DATA1));
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seq_printf(m, "CREG_DATA2 0x%08x\n",
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ioread32(card->regmap + CREG_DATA2));
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seq_printf(m, "CREG_DATA3 0x%08x\n",
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ioread32(card->regmap + CREG_DATA3));
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seq_printf(m, "CREG_DATA4 0x%08x\n",
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ioread32(card->regmap + CREG_DATA4));
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seq_printf(m, "CREG_DATA5 0x%08x\n",
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ioread32(card->regmap + CREG_DATA5));
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seq_printf(m, "CREG_DATA6 0x%08x\n",
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ioread32(card->regmap + CREG_DATA6));
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seq_printf(m, "CREG_DATA7 0x%08x\n",
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ioread32(card->regmap + CREG_DATA7));
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seq_printf(m, "INTR_COAL 0x%08x\n",
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ioread32(card->regmap + INTR_COAL));
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seq_printf(m, "HW_ERROR 0x%08x\n",
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ioread32(card->regmap + HW_ERROR));
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seq_printf(m, "DEBUG0 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG0));
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seq_printf(m, "DEBUG1 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG1));
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seq_printf(m, "DEBUG2 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG2));
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seq_printf(m, "DEBUG3 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG3));
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seq_printf(m, "DEBUG4 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG4));
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seq_printf(m, "DEBUG5 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG5));
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seq_printf(m, "DEBUG6 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG6));
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seq_printf(m, "DEBUG7 0x%08x\n",
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ioread32(card->regmap + PCI_DEBUG7));
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seq_printf(m, "RECONFIG 0x%08x\n",
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ioread32(card->regmap + PCI_RECONFIG));
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return 0;
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}
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static int rsxx_attr_stats_show(struct seq_file *m, void *p)
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{
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struct rsxx_cardinfo *card = m->private;
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int i;
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for (i = 0; i < card->n_targets; i++) {
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seq_printf(m, "Ctrl %d CRC Errors = %d\n",
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i, card->ctrl[i].stats.crc_errors);
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seq_printf(m, "Ctrl %d Hard Errors = %d\n",
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i, card->ctrl[i].stats.hard_errors);
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seq_printf(m, "Ctrl %d Soft Errors = %d\n",
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i, card->ctrl[i].stats.soft_errors);
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seq_printf(m, "Ctrl %d Writes Issued = %d\n",
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i, card->ctrl[i].stats.writes_issued);
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seq_printf(m, "Ctrl %d Writes Failed = %d\n",
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i, card->ctrl[i].stats.writes_failed);
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seq_printf(m, "Ctrl %d Reads Issued = %d\n",
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i, card->ctrl[i].stats.reads_issued);
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seq_printf(m, "Ctrl %d Reads Failed = %d\n",
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i, card->ctrl[i].stats.reads_failed);
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seq_printf(m, "Ctrl %d Reads Retried = %d\n",
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i, card->ctrl[i].stats.reads_retried);
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seq_printf(m, "Ctrl %d Discards Issued = %d\n",
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i, card->ctrl[i].stats.discards_issued);
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seq_printf(m, "Ctrl %d Discards Failed = %d\n",
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i, card->ctrl[i].stats.discards_failed);
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seq_printf(m, "Ctrl %d DMA SW Errors = %d\n",
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i, card->ctrl[i].stats.dma_sw_err);
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seq_printf(m, "Ctrl %d DMA HW Faults = %d\n",
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i, card->ctrl[i].stats.dma_hw_fault);
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seq_printf(m, "Ctrl %d DMAs Cancelled = %d\n",
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i, card->ctrl[i].stats.dma_cancelled);
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seq_printf(m, "Ctrl %d SW Queue Depth = %d\n",
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i, card->ctrl[i].stats.sw_q_depth);
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seq_printf(m, "Ctrl %d HW Queue Depth = %d\n",
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i, atomic_read(&card->ctrl[i].stats.hw_q_depth));
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}
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return 0;
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}
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static int rsxx_attr_stats_open(struct inode *inode, struct file *file)
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{
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return single_open(file, rsxx_attr_stats_show, inode->i_private);
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}
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static int rsxx_attr_pci_regs_open(struct inode *inode, struct file *file)
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{
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return single_open(file, rsxx_attr_pci_regs_show, inode->i_private);
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}
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static ssize_t rsxx_cram_read(struct file *fp, char __user *ubuf,
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size_t cnt, loff_t *ppos)
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{
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struct rsxx_cram *info = fp->private_data;
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struct rsxx_cardinfo *card = info->i_private;
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char *buf;
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int st;
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buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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info->f_pos = (u32)*ppos + info->offset;
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st = rsxx_creg_read(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1);
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if (st)
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return st;
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st = copy_to_user(ubuf, buf, cnt);
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if (st)
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return st;
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info->offset += cnt;
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kfree(buf);
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return cnt;
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}
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static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf,
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size_t cnt, loff_t *ppos)
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{
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struct rsxx_cram *info = fp->private_data;
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struct rsxx_cardinfo *card = info->i_private;
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char *buf;
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int st;
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buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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st = copy_from_user(buf, ubuf, cnt);
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if (st)
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return st;
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info->f_pos = (u32)*ppos + info->offset;
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st = rsxx_creg_write(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1);
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if (st)
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return st;
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info->offset += cnt;
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kfree(buf);
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return cnt;
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}
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static int rsxx_cram_open(struct inode *inode, struct file *file)
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{
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struct rsxx_cram *info = kzalloc(sizeof(*info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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info->i_private = inode->i_private;
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info->f_pos = file->f_pos;
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file->private_data = info;
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return 0;
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}
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static int rsxx_cram_release(struct inode *inode, struct file *file)
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{
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struct rsxx_cram *info = file->private_data;
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if (!info)
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return 0;
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kfree(info);
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file->private_data = NULL;
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return 0;
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}
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static const struct file_operations debugfs_cram_fops = {
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.owner = THIS_MODULE,
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.open = rsxx_cram_open,
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.read = rsxx_cram_read,
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.write = rsxx_cram_write,
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.release = rsxx_cram_release,
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};
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static const struct file_operations debugfs_stats_fops = {
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.owner = THIS_MODULE,
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.open = rsxx_attr_stats_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static const struct file_operations debugfs_pci_regs_fops = {
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.owner = THIS_MODULE,
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.open = rsxx_attr_pci_regs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void rsxx_debugfs_dev_new(struct rsxx_cardinfo *card)
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{
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struct dentry *debugfs_stats;
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struct dentry *debugfs_pci_regs;
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struct dentry *debugfs_cram;
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card->debugfs_dir = debugfs_create_dir(card->gendisk->disk_name, NULL);
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if (IS_ERR_OR_NULL(card->debugfs_dir))
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goto failed_debugfs_dir;
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debugfs_stats = debugfs_create_file("stats", S_IRUGO,
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card->debugfs_dir, card,
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&debugfs_stats_fops);
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if (IS_ERR_OR_NULL(debugfs_stats))
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goto failed_debugfs_stats;
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debugfs_pci_regs = debugfs_create_file("pci_regs", S_IRUGO,
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card->debugfs_dir, card,
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&debugfs_pci_regs_fops);
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if (IS_ERR_OR_NULL(debugfs_pci_regs))
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goto failed_debugfs_pci_regs;
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debugfs_cram = debugfs_create_file("cram", S_IRUGO | S_IWUSR,
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card->debugfs_dir, card,
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&debugfs_cram_fops);
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if (IS_ERR_OR_NULL(debugfs_cram))
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goto failed_debugfs_cram;
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return;
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failed_debugfs_cram:
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debugfs_remove(debugfs_pci_regs);
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failed_debugfs_pci_regs:
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debugfs_remove(debugfs_stats);
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failed_debugfs_stats:
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debugfs_remove(card->debugfs_dir);
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failed_debugfs_dir:
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card->debugfs_dir = NULL;
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}
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/*----------------- Interrupt Control & Handling -------------------*/
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static void rsxx_mask_interrupts(struct rsxx_cardinfo *card)
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@ -741,6 +1011,9 @@ static int rsxx_pci_probe(struct pci_dev *dev,
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rsxx_attach_dev(card);
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/************* Setup Debugfs *************/
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rsxx_debugfs_dev_new(card);
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return 0;
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failed_create_dev:
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@ -818,6 +1091,8 @@ static void rsxx_pci_remove(struct pci_dev *dev)
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/* Prevent work_structs from re-queuing themselves. */
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card->halt = 1;
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debugfs_remove_recursive(card->debugfs_dir);
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free_irq(dev->irq, card);
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if (!force_legacy)
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@ -185,6 +185,8 @@ struct rsxx_cardinfo {
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int n_targets;
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struct rsxx_dma_ctrl *ctrl;
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struct dentry *debugfs_dir;
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};
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enum rsxx_pci_regmap {
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@ -287,6 +289,7 @@ enum rsxx_creg_addr {
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CREG_ADD_CAPABILITIES = 0x80001050,
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CREG_ADD_LOG = 0x80002000,
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CREG_ADD_NUM_TARGETS = 0x80003000,
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CREG_ADD_CRAM = 0xA0000000,
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CREG_ADD_CONFIG = 0xB0000000,
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};
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