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/*
* pata_netcell.c - Netcell PATA driver
*
* (c) 2006 Red Hat <alan@redhat.com>
*/
#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 <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/ata.h>
#define DRV_NAME "pata_netcell"
#define DRV_VERSION "0.1.5"
/**
* netcell_probe_init - check for 40/80 pin
* @ap: Port
*
* Cables are handled by the RAID controller. Report 80 pin.
*/
static int netcell_pre_reset(struct ata_port *ap)
{
ap->cbl = ATA_CBL_PATA80;
return ata_std_prereset(ap);
}
/**
* netcell_probe_reset - Probe specified port on PATA host controller
* @ap: Port to probe
*
* LOCKING:
* None (inherited from caller).
*/
static void netcell_error_handler(struct ata_port *ap)
{
return ata_bmdma_drive_eh(ap, netcell_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/* No PIO or DMA methods needed for this device */
static struct scsi_host_template netcell_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,
/* Special handling needed if you have sector or LBA48 limits */
.max_sectors = ATA_MAX_SECTORS,
.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,
/* Use standard CHS mapping rules */
.bios_param = ata_std_bios_param,
};
static const struct ata_port_operations netcell_ops = {
.port_disable = ata_port_disable,
/* Task file is PCI ATA format, use helpers */
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
.check_status = ata_check_status,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
.error_handler = netcell_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
/* BMDMA handling is PCI ATA format, use helpers */
.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_pio_data_xfer,
/* IRQ-related hooks */
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
/* Generic PATA PCI ATA helpers */
.port_start = ata_port_start,
.port_stop = ata_port_stop,
.host_stop = ata_host_stop,
};
/**
* netcell_init_one - Register Netcell ATA PCI device with kernel services
* @pdev: PCI device to register
* @ent: Entry in netcell_pci_tbl matching with @pdev
*
* Called from kernel PCI layer.
*
* LOCKING:
* Inherited from PCI layer (may sleep).
*
* RETURNS:
* Zero on success, or -ERRNO value.
*/
static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
static struct ata_port_info info = {
.sht = &netcell_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
/* Actually we don't really care about these as the
firmware deals with it */
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x3f, /* UDMA 133 */
.port_ops = &netcell_ops,
};
static struct ata_port_info *port_info[2] = { &info, &info };
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev,
"version " DRV_VERSION "\n");
/* Any chip specific setup/optimisation/messages here */
ata_pci_clear_simplex(pdev);
/* And let the library code do the work */
return ata_pci_init_one(pdev, port_info, 2);
}
static const struct pci_device_id netcell_pci_tbl[] = {
{ PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
{ } /* terminate list */
};
static struct pci_driver netcell_pci_driver = {
.name = DRV_NAME,
.id_table = netcell_pci_tbl,
.probe = netcell_init_one,
.remove = ata_pci_remove_one,
};
static int __init netcell_init(void)
{
return pci_register_driver(&netcell_pci_driver);
}
static void __exit netcell_exit(void)
{
pci_unregister_driver(&netcell_pci_driver);
}
module_init(netcell_init);
module_exit(netcell_exit);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
MODULE_VERSION(DRV_VERSION);
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