Tokyo Electron SDIO controller (Ellen) support

@@ -97,6 +99,13 @@
 				  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS,
 	},
 
+        {
+                .vendor         = PCI_VENDOR_ID_TOKYO_ELECTRON,
+                .device         = PCI_DEVICE_ID_ELLEN,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+        },
+
 	{	/* Generic SD host controller */
 		PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
 	},

@@ -1205,10 +1214,43 @@
  *                                                                           *
 \*****************************************************************************/
 
+static int __devinit sdhci_ellen_init(struct pci_dev *pdev)
+{
+	int                 ret;
+	unsigned int        config;
+	void __iomem *      ioaddr;
+	 
+	if (pci_resource_flags(pdev, 0) & PCI_BASE_ADDRESS_SPACE)
+		return -ENOMEM;
+	
+	ret = pci_request_region(pdev, 0, "EllenPCI");
+	if (ret)
+		return -ENOMEM;
+	
+	ioaddr = ioremap_nocache(pci_resource_start(pdev, 0), 
+	                         pci_resource_len(pdev, 0));
+	if (!ioaddr) {
+		ret = -ENOMEM;
+		goto release;
+	}
+	
+	/* Do some magic passes to enable Ellen PCI interrupts */
+	config = readw(ioaddr + 0x4c);
+	config |= (1) | (1<<3) | (1<<6);
+	writew(config, ioaddr + 0x4c);
+	/* Retire last write by read */
+	config = readw(ioaddr + 0x4c);
+	
+	iounmap(ioaddr);
+release:
+	pci_release_region(pdev, 0);
+	return ret;
+}
+
 static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 {
 	int ret;
-	unsigned int version;
+	unsigned int version, temp, iomemsize;
 	struct sdhci_chip *chip;
 	struct mmc_host *mmc;
 	struct sdhci_host *host;

@@ -1225,6 +1267,15 @@
 
 	first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
 
+	if ((pdev->vendor == PCI_VENDOR_ID_TOKYO_ELECTRON) &&
+	    (pdev->device == PCI_DEVICE_ID_ELLEN)) {
+		first_bar = 2;
+		iomemsize = 0x400;
+	}
+	else {
+		iomemsize = 0x100;
+	}
+
 	if (first_bar > 5) {
 		printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n");
 		return -ENODEV;

@@ -1235,9 +1286,9 @@
 		return -ENODEV;
 	}
 
-	if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
-		printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. "
-			"You may experience problems.\n");
+	if ((temp = pci_resource_len(pdev, first_bar + slot)) != iomemsize) {
+		printk(KERN_ERR DRIVER_NAME ": Invalid iomem size %x. "
+			"You may experience problems.\n", temp);
 	}
 
 	if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {

@@ -1526,6 +1577,24 @@
 	chip->pdev = pdev;
 	chip->quirks = ent->driver_data;
 
+	if ((pdev->vendor == PCI_VENDOR_ID_TOKYO_ELECTRON) &&
+	    (pdev->device == PCI_DEVICE_ID_ELLEN)) {
+		ret = pci_read_config_byte(pdev, PCI_CLASS_PROG, &rev);
+		if (ret)
+			goto free;
+		
+		if( rev & 0x1 ) {
+			/* Ellen indicates DMA support by this bit */
+			chip->quirks |= SDHCI_QUIRK_FORCE_DMA;
+		}
+		
+		ret = sdhci_ellen_init(pdev);
+		if (ret) {
+			ret = -ENODEV;
+			goto free;
+		}
+	}
+
 	if (debug_quirks)
 		chip->quirks = debug_quirks;
 

@@ -2057,6 +2057,9 @@
 #define PCI_DEVICE_ID_BCM1250_PCI	0x0001
 #define PCI_DEVICE_ID_BCM1250_HT	0x0002
 
+#define PCI_VENDOR_ID_TOKYO_ELECTRON	0x1679
+#define PCI_DEVICE_ID_ELLEN		0x3000
+
 #define PCI_VENDOR_ID_ATHEROS		0x168c
 
 #define PCI_VENDOR_ID_NETCELL		0x169c