1 files changed, 47 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath/wil6210/pcie_bus.c b/drivers/net/wireless/ath/wil6210/pcie_bus.c
index 1e2e07b9d13d..d3fbfa28db62 100644
--- a/drivers/net/wireless/ath/wil6210/pcie_bus.c
+++ b/drivers/net/wireless/ath/wil6210/pcie_bus.c
@@ -15,7 +15,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/debugfs.h>
 #include <linux/pci.h>
 #include <linux/moduleparam.h>
 
@@ -27,11 +26,22 @@ MODULE_PARM_DESC(use_msi,
 		 " Use MSI interrupt: "
 		 "0 - don't, 1 - (default) - single, or 3");
 
+static bool debug_fw; /* = false; */
+module_param(debug_fw, bool, S_IRUGO);
+MODULE_PARM_DESC(debug_fw, " load driver if FW not ready. For FW debug");
+
 /* 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;
+
+	pdev->msi_enabled = 0;
 
 	pci_set_master(pdev);
 
@@ -63,6 +73,12 @@ static int wil_if_pcie_enable(struct wil6210_priv *wil)
 
 	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;
@@ -71,6 +87,8 @@ static int wil_if_pcie_enable(struct wil6210_priv *wil)
 	mutex_lock(&wil->mutex);
 	rc = wil_reset(wil);
 	mutex_unlock(&wil->mutex);
+	if (debug_fw)
+		rc = 0;
 	if (rc)
 		goto release_irq;
 
@@ -104,10 +122,12 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	struct wil6210_priv *wil;
 	struct device *dev = &pdev->dev;
 	void __iomem *csr;
+	struct wil_board *board = (struct wil_board *)id->driver_data;
 	int rc;
 
 	/* check HW */
-	dev_info(&pdev->dev, WIL_NAME " device found [%04x:%04x] (rev %x)\n",
+	dev_info(&pdev->dev, WIL_NAME
+		 " \"%s\" device found [%04x:%04x] (rev %x)\n", board->name,
 		 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
 
 	if (pci_resource_len(pdev, 0) != WIL6210_MEM_SIZE) {
@@ -119,9 +139,16 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	rc = pci_enable_device(pdev);
 	if (rc) {
-		dev_err(&pdev->dev, "pci_enable_device failed\n");
-		return -ENODEV;
+		dev_err(&pdev->dev,
+			"pci_enable_device failed, retry with MSI only\n");
+		/* Work around for platforms that can't allocate IRQ:
+		 * retry with MSI only
+		 */
+		pdev->msi_enabled = 1;
+		rc = pci_enable_device(pdev);
 	}
+	if (rc)
+		return -ENODEV;
 	/* rollback to err_disable_pdev */
 
 	rc = pci_request_region(pdev, 0, WIL_NAME);
@@ -150,6 +177,7 @@ static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	pci_set_drvdata(pdev, wil);
 	wil->pdev = pdev;
+	wil->board = board;
 
 	wil6210_clear_irq(wil);
 	/* FW should raise IRQ when ready */
@@ -200,8 +228,21 @@ static void wil_pcie_remove(struct pci_dev *pdev)
 	pci_disable_device(pdev);
 }
 
-static DEFINE_PCI_DEVICE_TABLE(wil6210_pcie_ids) = {
-	{ PCI_DEVICE(0x1ae9, 0x0301) },
+static const struct wil_board wil_board_marlon = {
+	.board = WIL_BOARD_MARLON,
+	.name = "marlon",
+};
+
+static const struct wil_board wil_board_sparrow = {
+	.board = WIL_BOARD_SPARROW,
+	.name = "sparrow",
+};
+
+static const struct pci_device_id wil6210_pcie_ids[] = {
+	{ PCI_DEVICE(0x1ae9, 0x0301),
+	  .driver_data = (kernel_ulong_t)&wil_board_marlon },
+	{ PCI_DEVICE(0x1ae9, 0x0310),
+	  .driver_data = (kernel_ulong_t)&wil_board_sparrow },
 	{ /* end: all zeroes */	},
 };
 MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids);