// SPDX-License-Identifier: GPL-2.0-only
/*
* 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 + 0 x00 IRQ Status
* Base + 0 x01 IRQ control
* Base + 0 x02 Chipset control
* Base + 0 x03 Unknown
* Base + 0 x04 VDMA and reset control + wait bits
* Base + 0 x08 BMIMBA
* Base + 0 x0C DMA Length
* Base + 0 x10 Taskfile
* Base + 0 x18 BMDMA Status ?
* Base + 0 x1C
* Base + 0 x1D 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 + 0 x1E AltStatus
* Base + 0 x1F 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 ] = {
0 xd6, 0 x85, 0 x44, 0 x33, 0 x13
};
iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
ap->ioaddr.bmdma_addr + 0 x1f);
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(0 xd6, ap->ioaddr.bmdma_addr + 0 x1f);
ata_sff_dev_select(ap, device);
ninja32_set_piomode(ap, adev);
}
}
static const 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(0 x05, base + 0 x01); /* Enable interrupt lines */
iowrite8(0 xBE, base + 0 x02); /* Burst, ?? setup */
iowrite8(0 x01, base + 0 x03); /* Unknown */
iowrite8(0 x20, base + 0 x04); /* WAIT0 */
iowrite8(0 x8f, base + 0 x05); /* Unknown */
iowrite8(0 xa4, base + 0 x1c); /* Unknown */
iowrite8(0 x83, base + 0 x1d); /* 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_and_coherent(&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 + 0 x10;
ap->ioaddr.ctl_addr = base + 0 x1E;
ap->ioaddr.altstatus_addr = base + 0 x1E;
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[] = {
{ 0 x10FC, 0 x0003, PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , 0 },
{ 0 x1145, 0 x8008, PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , 0 },
{ 0 x1145, 0 xf008, PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , 0 },
{ 0 x1145, 0 xf021, PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , 0 },
{ 0 x1145, 0 xf024, PCI_ANY_ID, PCI_ANY_ID, 0 , 0 , 0 },
{ 0 x1145, 0 xf02C, 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);
Messung V0.5 in Prozent C=91 H=92 G=91
¤ Dauer der Verarbeitung: 0.4 Sekunden
¤
*© Formatika GbR, Deutschland