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msm: pcie: add debugfs cat capabilities for PCIe entries

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Add cat capabilities for PCIe rc_sel, base_sel, wr_offset,
wr_val, and wr_mask debugfs entries. This provide users a
convenient way to check values written and what options are
available.

Change-Id: I3cf3eb823479c33537966a737cfc2701dd2373e5
Signed-off-by: Tony Truong <truong@codeaurora.org>
This commit is contained in:
Tony Truong 2020-09-29 16:53:25 -07:00
commit 1121dd2a34
1 changed files with 93 additions and 0 deletions
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93
drivers/pci/controller/pci-msm.c
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@ -1916,6 +1916,25 @@ static const struct file_operations msm_pcie_debugfs_case_ops = {
.write = msm_pcie_debugfs_case_select,
};
static int msm_pcie_debugfs_rc_select_show(struct seq_file *m, void *v)
{
int i;
seq_printf(m, "Current rc_sel: %d which selects:\n", rc_sel);
for (i = 0; i < MAX_RC_NUM; i++)
if (rc_sel & BIT(i))
seq_printf(m, "\tPCIe%d\n", i);
return 0;
}
static int msm_pcie_debugfs_rc_select_open(struct inode *inode,
struct file *file)
{
return single_open(file, msm_pcie_debugfs_rc_select_show, NULL);
}
static ssize_t msm_pcie_debugfs_rc_select(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -1944,9 +1963,32 @@ static ssize_t msm_pcie_debugfs_rc_select(struct file *file,
}
static const struct file_operations msm_pcie_debugfs_rc_select_ops = {
.open = msm_pcie_debugfs_rc_select_open,
.release = single_release,
.read = seq_read,
.write = msm_pcie_debugfs_rc_select,
};
static int msm_pcie_debugfs_base_select_show(struct seq_file *m, void *v)
{
int i;
seq_puts(m, "Options:\n");
for (i = 0; i < MSM_PCIE_MAX_RES; i++)
seq_printf(m, "\t%d: %s\n", i + 1, msm_pcie_res_info[i].name);
seq_printf(m, "\nCurrent base_sel: %d: %s\n", base_sel, base_sel ?
msm_pcie_res_info[base_sel - 1].name : "None");
return 0;
}
static int msm_pcie_debugfs_base_select_open(struct inode *inode,
struct file *file)
{
return single_open(file, msm_pcie_debugfs_base_select_show, NULL);
}
static ssize_t msm_pcie_debugfs_base_select(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -1972,6 +2014,9 @@ static ssize_t msm_pcie_debugfs_base_select(struct file *file,
}
static const struct file_operations msm_pcie_debugfs_base_select_ops = {
.open = msm_pcie_debugfs_base_select_open,
.release = single_release,
.read = seq_read,
.write = msm_pcie_debugfs_base_select,
};
@ -2005,6 +2050,19 @@ static const struct file_operations msm_pcie_debugfs_linkdown_panic_ops = {
.write = msm_pcie_debugfs_linkdown_panic,
};
static int msm_pcie_debugfs_wr_offset_show(struct seq_file *m, void *v)
{
seq_printf(m, "0x%x\n", wr_offset);
return 0;
}
static int msm_pcie_debugfs_wr_offset_open(struct inode *inode,
struct file *file)
{
return single_open(file, msm_pcie_debugfs_wr_offset_show, NULL);
}
static ssize_t msm_pcie_debugfs_wr_offset(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -2023,9 +2081,24 @@ static ssize_t msm_pcie_debugfs_wr_offset(struct file *file,
}
static const struct file_operations msm_pcie_debugfs_wr_offset_ops = {
.open = msm_pcie_debugfs_wr_offset_open,
.release = single_release,
.read = seq_read,
.write = msm_pcie_debugfs_wr_offset,
};
static int msm_pcie_debugfs_wr_mask_show(struct seq_file *m, void *v)
{
seq_printf(m, "0x%x\n", wr_mask);
return 0;
}
static int msm_pcie_debugfs_wr_mask_open(struct inode *inode, struct file *file)
{
return single_open(file, msm_pcie_debugfs_wr_mask_show, NULL);
}
static ssize_t msm_pcie_debugfs_wr_mask(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -2044,8 +2117,25 @@ static ssize_t msm_pcie_debugfs_wr_mask(struct file *file,
}
static const struct file_operations msm_pcie_debugfs_wr_mask_ops = {
.open = msm_pcie_debugfs_wr_mask_open,
.release = single_release,
.read = seq_read,
.write = msm_pcie_debugfs_wr_mask,
};
static int msm_pcie_debugfs_wr_value_show(struct seq_file *m, void *v)
{
seq_printf(m, "0x%x\n", wr_value);
return 0;
}
static int msm_pcie_debugfs_wr_value_open(struct inode *inode,
struct file *file)
{
return single_open(file, msm_pcie_debugfs_wr_value_show, NULL);
}
static ssize_t msm_pcie_debugfs_wr_value(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
@ -2064,6 +2154,9 @@ static ssize_t msm_pcie_debugfs_wr_value(struct file *file,
}
static const struct file_operations msm_pcie_debugfs_wr_value_ops = {
.open = msm_pcie_debugfs_wr_value_open,
.release = single_release,
.read = seq_read,
.write = msm_pcie_debugfs_wr_value,
};