mwl8k: pci BAR mapping changes

Map BAR0 as well, as we need to write to it during init on some chips.

Also, if BAR0 is a 64bit BAR, the register BAR becomes BAR2, so try
mapping BAR2 if mapping BAR1 fails.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 22 insertions, 3 deletions

diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 80df2ebbd602..c0317e298c11 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -124,6 +124,7 @@ struct mwl8k_firmware {
 };
 
 struct mwl8k_priv {
+        void __iomem *sram;
         void __iomem *regs;
         struct ieee80211_hw *hw;
 
@@ -2987,13 +2988,27 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
         SET_IEEE80211_DEV(hw, &pdev->dev);
         pci_set_drvdata(pdev, hw);
 
-        priv->regs = pci_iomap(pdev, 1, 0x10000);
-        if (priv->regs == NULL) {
-                printk(KERN_ERR "%s: Cannot map device memory\n",
+        priv->sram = pci_iomap(pdev, 0, 0x10000);
+        if (priv->sram == NULL) {
+                printk(KERN_ERR "%s: Cannot map device SRAM\n",
                        wiphy_name(hw->wiphy));
                 goto err_iounmap;
         }
 
+        /*
+         * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
+         * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
+         */
+        priv->regs = pci_iomap(pdev, 1, 0x10000);
+        if (priv->regs == NULL) {
+                priv->regs = pci_iomap(pdev, 2, 0x10000);
+                if (priv->regs == NULL) {
+                        printk(KERN_ERR "%s: Cannot map device registers\n",
+                               wiphy_name(hw->wiphy));
+                        goto err_iounmap;
+                }
+        }
+
         memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
         priv->band.band = IEEE80211_BAND_2GHZ;
         priv->band.channels = priv->channels;
@@ -3165,6 +3180,9 @@ err_iounmap:
         if (priv->regs != NULL)
                 pci_iounmap(pdev, priv->regs);
 
+        if (priv->sram != NULL)
+                pci_iounmap(pdev, priv->sram);
+
         pci_set_drvdata(pdev, NULL);
         ieee80211_free_hw(hw);
 
@@ -3212,6 +3230,7 @@ static void __devexit mwl8k_remove(struct pci_dev *pdev)
         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
 
         pci_iounmap(pdev, priv->regs);
+        pci_iounmap(pdev, priv->sram);
         pci_set_drvdata(pdev, NULL);
         ieee80211_free_hw(hw);
         pci_release_regions(pdev);