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Merge "cnss2: Add CNSS wrapper function for msm_pcie_reg_dump()"

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This commit is contained in:
qctecmdr 2021-03-26 01:27:20 -07:00 • committed by Gerrit - the friendly Code Review server
commit 3008930db1
1 changed files with 34 additions and 5 deletions
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39
drivers/net/wireless/cnss2/pci.c
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@ -553,6 +553,23 @@ static int cnss_pci_set_link_down(struct cnss_pci_data *pci_priv)
return ret;
}
/**
* _cnss_pci_get_reg_dump() - Dump PCIe RC registers for debug
* @pci_priv: driver PCI bus context pointer
* @buf: destination buffer pointer
* @len: length of the buffer
*
* This function shall call corresponding PCIe root complex driver API
* to dump PCIe RC registers for debug purpose.
*
* Return: 0 for success, negative value for error
*/
static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
u8 *buf, u32 len)
{
return msm_pcie_reg_dump(pci_priv->pci_dev, buf, len);
}
#else
static int cnss_pci_enumerate(struct cnss_plat_data *plat_priv, int rc_num)
{
@ -597,6 +614,12 @@ static int cnss_pci_set_link_down(struct cnss_pci_data *pci_priv)
{
return 0;
}
static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
u8 *buf, u32 len)
{
return 0;
}
#endif /* CONFIG_PCI_MSM */
int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
@ -1261,15 +1284,21 @@ EXPORT_SYMBOL(cnss_pci_link_down);
int cnss_pci_get_reg_dump(struct device *dev, uint8_t *buffer, uint32_t len)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct cnss_pci_data *pci_priv = cnss_get_pci_priv(pci_dev);
if (!pci_dev) {
cnss_pr_err("pci_dev is NULL\n");
return -EINVAL;
if (!pci_priv) {
cnss_pr_err("pci_priv is NULL\n");
return -ENODEV;
}
cnss_pr_dbg("Get pci reg dump for hang data\n");
if (pci_priv->pci_link_state == PCI_LINK_DOWN) {
cnss_pr_dbg("No PCIe reg dump since PCIe device is suspended(D3)\n");
return -EACCES;
}
return msm_pcie_reg_dump(pci_dev, buffer, len);
cnss_pr_dbg("Start to get PCIe reg dump\n");
return _cnss_pci_get_reg_dump(pci_priv, buffer, len);
}
EXPORT_SYMBOL(cnss_pci_get_reg_dump);