/* Bus ops */
static int wil_if_pcie_enable(struct wil6210_priv *wil)
{
struct pci_dev *pdev = wil->pdev;
int rc;
pci_set_master(pdev);
/*
* how many MSI interrupts to request?
*/
switch (use_msi) {
case 3:
case 1:
case 0:
break;
default:
wil_err(wil, "Invalid use_msi=%d, default to 1\n",
use_msi);
use_msi = 1;
}
wil->n_msi = use_msi;
if (wil->n_msi) {
wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi);
rc = pci_enable_msi_block(pdev, wil->n_msi);
if (rc && (wil->n_msi == 3)) {
wil_err(wil, "3 MSI mode failed, try 1 MSI\n");
wil->n_msi = 1;
rc = pci_enable_msi_block(pdev, wil->n_msi);
}
if (rc) {
wil_err(wil, "pci_enable_msi failed, use INTx\n");
wil->n_msi = 0;
}
} else {
wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n");
}
rc = wil6210_init_irq(wil, pdev->irq);
if (rc)
goto stop_master;
/* need reset here to obtain MAC */
rc = wil_reset(wil);
if (debug_fw)
rc = 0;
if (rc)
goto release_irq;
return 0;
release_irq:
wil6210_fini_irq(wil, pdev->irq);
/* safe to call if no MSI */
pci_disable_msi(pdev);
stop_master:
pci_clear_master(pdev);
return rc;
}
/* Bus ops */
static int wil_if_pcie_enable(struct wil6210_priv *wil)
{
struct pci_dev *pdev = wil->pdev;
int rc;
/* on platforms with buggy ACPI, pdev->msi_enabled may be set to
* allow pci_enable_device to work. This indicates INTx was not routed
* and only MSI should be used
*/
int msi_only = pdev->msi_enabled;
bool _use_msi = use_msi;
wil_dbg_misc(wil, "%s()\n", __func__);
pdev->msi_enabled = 0;
pci_set_master(pdev);
wil_dbg_misc(wil, "Setup %s interrupt\n", use_msi ? "MSI" : "INTx");
if (use_msi && pci_enable_msi(pdev)) {
wil_err(wil, "pci_enable_msi failed, use INTx\n");
_use_msi = false;
}
if (!_use_msi && msi_only) {
wil_err(wil, "Interrupt pin not routed, unable to use INTx\n");
rc = -ENODEV;
goto stop_master;
}
rc = wil6210_init_irq(wil, pdev->irq, _use_msi);
if (rc)
goto stop_master;
/* need reset here to obtain MAC */
mutex_lock(&wil->mutex);
rc = wil_reset(wil, false);
mutex_unlock(&wil->mutex);
if (rc)
goto release_irq;
return 0;
release_irq:
wil6210_fini_irq(wil, pdev->irq);
/* safe to call if no MSI */
pci_disable_msi(pdev);
stop_master:
pci_clear_master(pdev);
return rc;
}
/* Bus ops */
static int wil_if_pcie_enable(struct wil6210_priv *wil)
{
struct pci_dev *pdev = wil->pdev;
int rc;
/* on platforms with buggy ACPI, pdev->msi_enabled may be set to
* allow pci_enable_device to work. This indicates INTx was not routed
* and only MSI should be used
*/
int msi_only = pdev->msi_enabled;
wil_dbg_misc(wil, "%s()\n", __func__);
pdev->msi_enabled = 0;
pci_set_master(pdev);
/*
* how many MSI interrupts to request?
*/
switch (use_msi) {
case 3:
case 1:
wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi);
break;
case 0:
wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n");
break;
default:
wil_err(wil, "Invalid use_msi=%d, default to 1\n", use_msi);
use_msi = 1;
}
if (use_msi == 3 && pci_enable_msi_range(pdev, 3, 3) < 0) {
wil_err(wil, "3 MSI mode failed, try 1 MSI\n");
use_msi = 1;
}
if (use_msi == 1 && pci_enable_msi(pdev)) {
wil_err(wil, "pci_enable_msi failed, use INTx\n");
use_msi = 0;
}
wil->n_msi = use_msi;
if ((wil->n_msi == 0) && msi_only) {
wil_err(wil, "Interrupt pin not routed, unable to use INTx\n");
rc = -ENODEV;
goto stop_master;
}
rc = wil6210_init_irq(wil, pdev->irq);
if (rc)
goto stop_master;
/* need reset here to obtain MAC */
mutex_lock(&wil->mutex);
rc = wil_reset(wil);
mutex_unlock(&wil->mutex);
if (debug_fw)
rc = 0;
if (rc)
goto release_irq;
return 0;
release_irq:
wil6210_fini_irq(wil, pdev->irq);
/* safe to call if no MSI */
pci_disable_msi(pdev);
stop_master:
pci_clear_master(pdev);
return rc;
}
