Initial import

1 files changed, 197 insertions, 0 deletions

diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c
new file mode 100644
index 000000000..633aa2934
--- /dev/null
+++ b/drivers/ata/pata_ninja32.c
@@ -0,0 +1,197 @@
+/*
+ * pata_ninja32.c 	- Ninja32 PATA for new ATA layer
+ *			  (C) 2007 Red Hat Inc
+ *
+ * Note: The controller like many controllers has shared timings for
+ * PIO and DMA. We thus flip to the DMA timings in dma_start and flip back
+ * in the dma_stop function. Thus we actually don't need a set_dmamode
+ * method as the PIO method is always called and will set the right PIO
+ * timing parameters.
+ *
+ * The Ninja32 Cardbus is not a generic SFF controller. Instead it is
+ * laid out as follows off BAR 0. This is based upon Mark Lord's delkin
+ * driver and the extensive analysis done by the BSD developers, notably
+ * ITOH Yasufumi.
+ *
+ *	Base + 0x00 IRQ Status
+ *	Base + 0x01 IRQ control
+ *	Base + 0x02 Chipset control
+ *	Base + 0x03 Unknown
+ *	Base + 0x04 VDMA and reset control + wait bits
+ *	Base + 0x08 BMIMBA
+ *	Base + 0x0C DMA Length
+ *	Base + 0x10 Taskfile
+ *	Base + 0x18 BMDMA Status ?
+ *	Base + 0x1C
+ *	Base + 0x1D Bus master control
+ *		bit 0 = enable
+ *		bit 1 = 0 write/1 read
+ *		bit 2 = 1 sgtable
+ *		bit 3 = go
+ *		bit 4-6 wait bits
+ *		bit 7 = done
+ *	Base + 0x1E AltStatus
+ *	Base + 0x1F timing register
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define DRV_NAME "pata_ninja32"
+#define DRV_VERSION "0.1.5"
+
+
+/**
+ *	ninja32_set_piomode	-	set initial PIO mode data
+ *	@ap: ATA interface
+ *	@adev: ATA device
+ *
+ *	Called to do the PIO mode setup. Our timing registers are shared
+ *	but we want to set the PIO timing by default.
+ */
+
+static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	static u16 pio_timing[5] = {
+		0xd6, 0x85, 0x44, 0x33, 0x13
+	};
+	iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
+		 ap->ioaddr.bmdma_addr + 0x1f);
+	ap->private_data = adev;
+}
+
+
+static void ninja32_dev_select(struct ata_port *ap, unsigned int device)
+{
+	struct ata_device *adev = &ap->link.device[device];
+	if (ap->private_data != adev) {
+		iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f);
+		ata_sff_dev_select(ap, device);
+		ninja32_set_piomode(ap, adev);
+	}
+}
+
+static struct scsi_host_template ninja32_sht = {
+	ATA_BMDMA_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations ninja32_port_ops = {
+	.inherits	= &ata_bmdma_port_ops,
+	.sff_dev_select = ninja32_dev_select,
+	.cable_detect	= ata_cable_40wire,
+	.set_piomode	= ninja32_set_piomode,
+	.sff_data_xfer	= ata_sff_data_xfer32
+};
+
+static void ninja32_program(void __iomem *base)
+{
+	iowrite8(0x05, base + 0x01);	/* Enable interrupt lines */
+	iowrite8(0xBE, base + 0x02);	/* Burst, ?? setup */
+	iowrite8(0x01, base + 0x03);	/* Unknown */
+	iowrite8(0x20, base + 0x04);	/* WAIT0 */
+	iowrite8(0x8f, base + 0x05);	/* Unknown */
+	iowrite8(0xa4, base + 0x1c);	/* Unknown */
+	iowrite8(0x83, base + 0x1d);	/* BMDMA control: WAIT0 */
+}
+
+static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	struct ata_host *host;
+	struct ata_port *ap;
+	void __iomem *base;
+	int rc;
+
+	host = ata_host_alloc(&dev->dev, 1);
+	if (!host)
+		return -ENOMEM;
+	ap = host->ports[0];
+
+	/* Set up the PCI device */
+	rc = pcim_enable_device(dev);
+	if (rc)
+		return rc;
+	rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME);
+	if (rc == -EBUSY)
+		pcim_pin_device(dev);
+	if (rc)
+		return rc;
+
+	host->iomap = pcim_iomap_table(dev);
+	rc = dma_set_mask(&dev->dev, ATA_DMA_MASK);
+	if (rc)
+		return rc;
+	rc = dma_set_coherent_mask(&dev->dev, ATA_DMA_MASK);
+	if (rc)
+		return rc;
+	pci_set_master(dev);
+
+	/* Set up the register mappings. We use the I/O mapping as only the
+	   older chips also have MMIO on BAR 1 */
+	base = host->iomap[0];
+	if (!base)
+		return -ENOMEM;
+	ap->ops = &ninja32_port_ops;
+	ap->pio_mask = ATA_PIO4;
+	ap->flags |= ATA_FLAG_SLAVE_POSS;
+
+	ap->ioaddr.cmd_addr = base + 0x10;
+	ap->ioaddr.ctl_addr = base + 0x1E;
+	ap->ioaddr.altstatus_addr = base + 0x1E;
+	ap->ioaddr.bmdma_addr = base;
+	ata_sff_std_ports(&ap->ioaddr);
+	ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
+
+	ninja32_program(base);
+	/* FIXME: Should we disable them at remove ? */
+	return ata_host_activate(host, dev->irq, ata_bmdma_interrupt,
+				 IRQF_SHARED, &ninja32_sht);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ninja32_reinit_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int rc;
+
+	rc = ata_pci_device_do_resume(pdev);
+	if (rc)
+		return rc;
+	ninja32_program(host->iomap[0]);
+	ata_host_resume(host);
+	return 0;
+}
+#endif
+
+static const struct pci_device_id ninja32[] = {
+	{ 0x10FC, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1145, 0x8008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1145, 0xf008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1145, 0xf02C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ },
+};
+
+static struct pci_driver ninja32_pci_driver = {
+	.name 		= DRV_NAME,
+	.id_table	= ninja32,
+	.probe 		= ninja32_init_one,
+	.remove		= ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= ata_pci_device_suspend,
+	.resume		= ninja32_reinit_one,
+#endif
+};
+
+module_pci_driver(ninja32_pci_driver);
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("low-level driver for Ninja32 ATA");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, ninja32);
+MODULE_VERSION(DRV_VERSION);