--- /dev/null
+/*
+ * pata_ninja32.c - Ninja32 PATA for new ATA layer
+ * (C) 2007 Red Hat Inc
+ * Alan Cox <alan@redhat.com>
+ *
+ * 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 + 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/init.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 "0.0.1"
+
+
+/**
+ * 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_std_dev_select(ap, device);
+ ninja32_set_piomode(ap, adev);
+ }
+}
+
+static struct scsi_host_template ninja32_sht = {
+ .module = THIS_MODULE,
+ .name = DRV_NAME,
+ .ioctl = ata_scsi_ioctl,
+ .queuecommand = ata_scsi_queuecmd,
+ .can_queue = ATA_DEF_QUEUE,
+ .this_id = ATA_SHT_THIS_ID,
+ .sg_tablesize = LIBATA_MAX_PRD,
+ .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
+ .emulated = ATA_SHT_EMULATED,
+ .use_clustering = ATA_SHT_USE_CLUSTERING,
+ .proc_name = DRV_NAME,
+ .dma_boundary = ATA_DMA_BOUNDARY,
+ .slave_configure = ata_scsi_slave_config,
+ .slave_destroy = ata_scsi_slave_destroy,
+ .bios_param = ata_std_bios_param,
+};
+
+static struct ata_port_operations ninja32_port_ops = {
+ .set_piomode = ninja32_set_piomode,
+ .mode_filter = ata_pci_default_filter,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ninja32_dev_select,
+
+ .freeze = ata_bmdma_freeze,
+ .thaw = ata_bmdma_thaw,
+ .error_handler = ata_bmdma_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
+ .cable_detect = ata_cable_40wire,
+
+ .bmdma_setup = ata_bmdma_setup,
+ .bmdma_start = ata_bmdma_start,
+ .bmdma_stop = ata_bmdma_stop,
+ .bmdma_status = ata_bmdma_status,
+
+ .qc_prep = ata_qc_prep,
+ .qc_issue = ata_qc_issue_prot,
+
+ .data_xfer = ata_data_xfer,
+
+ .irq_handler = ata_interrupt,
+ .irq_clear = ata_bmdma_irq_clear,
+ .irq_on = ata_irq_on,
+
+ .port_start = ata_sff_port_start,
+};
+
+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 = pci_set_dma_mask(dev, ATA_DMA_MASK);
+ if (rc)
+ return rc;
+ rc = pci_set_consistent_dma_mask(dev, ATA_DMA_MASK);
+ if (rc)
+ return rc;
+ pci_set_master(dev);
+
+ /* Set up the register mappings */
+ base = host->iomap[0];
+ if (!base)
+ return -ENOMEM;
+ ap->ops = &ninja32_port_ops;
+ ap->pio_mask = 0x1F;
+ 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_std_ports(&ap->ioaddr);
+
+ iowrite8(0x05, base + 0x01); /* Enable interrupt lines */
+ iowrite8(0xB3, base + 0x02); /* Burst, ?? setup */
+ iowrite8(0x00, base + 0x04); /* WAIT0 ? */
+ /* FIXME: Should we disable them at remove ? */
+ return ata_host_activate(host, dev->irq, ata_interrupt, IRQF_SHARED, &ninja32_sht);
+}
+
+static const struct pci_device_id ninja32[] = {
+ { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { 0x1145, 0xf024, 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
+};
+
+static int __init ninja32_init(void)
+{
+ return pci_register_driver(&ninja32_pci_driver);
+}
+
+static void __exit ninja32_exit(void)
+{
+ pci_unregister_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);
+
+module_init(ninja32_init);
+module_exit(ninja32_exit);
projects / mv-sheeva.git / commitdiff