// SPDX-License-Identifier: GPL-2.0-only
/*
 *    pata_netcell.c - Netcell PATA driver
 *
 *      (c) 2006 Red Hat
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.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     "0.1.7"

/* No PIO or DMA methods needed for this device */

static unsigned int netcell_read_id(struct ata_device *adev,
                                    struct ata_taskfile *tf, __le16 *id)
{
        unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);

        /* Firmware forgets to mark words 85-87 valid */
        if (err_mask == 0)
                id[ATA_ID_CSF_DEFAULT] |= cpu_to_le16(0x4000);
        return err_mask;
}

static const struct scsi_host_template netcell_sht = {
        ATA_BMDMA_SHT(DRV_NAME),
};

static struct ata_port_operations netcell_ops = {
        .inherits       = &ata_bmdma_port_ops,
        .cable_detect   = ata_cable_80wire,
        .read_id        = netcell_read_id,
};


/**
 *      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 const struct ata_port_info info = {
                .flags          = ATA_FLAG_SLAVE_POSS,
                /* Actually we don't really care about these as the
                   firmware deals with it */
                .pio_mask       = ATA_PIO4,
                .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA5, /* UDMA 133 */
                .port_ops       = &netcell_ops,
        };
        const struct ata_port_info *port_info[] = { &info, NULL };
        int rc;

        ata_print_version_once(&pdev->dev, DRV_VERSION);

        rc = pcim_enable_device(pdev);
        if (rc)
                return rc;

        /* Any chip specific setup/optimisation/messages here */
        ata_pci_bmdma_clear_simplex(pdev);

        /* And let the library code do the work */
        return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
}

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,
#ifdef CONFIG_PM_SLEEP
        .suspend                = ata_pci_device_suspend,
        .resume                 = ata_pci_device_resume,
#endif
};

module_pci_driver(netcell_pci_driver);

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);