mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 07:46:50 +07:00
58eb8cd565
This patch fixes host drivers to use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable. Benefits of this change: * unused code is not being compiled in for CONFIG_PM=y, CONFIG_PM_SLEEP=n and CONFIG_PM_RUNTIME=y configurations * easier transition to use struct dev_pm_ops and SIMPLE_DEV_PM_OPS() in the future * more consistent code (there are host drivers which are using the correct CONFIG_PM_SLEEP checks already) The patch leaves the core libata code and ->port_[suspend,resume] support in sata_[inic162x,nv,sil24].c alone for now. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
249 lines
6.4 KiB
C
249 lines
6.4 KiB
C
/*
|
|
* pata_triflex.c - Compaq PATA for new ATA layer
|
|
* (C) 2005 Red Hat Inc
|
|
* Alan Cox <alan@lxorguk.ukuu.org.uk>
|
|
*
|
|
* based upon
|
|
*
|
|
* triflex.c
|
|
*
|
|
* IDE Chipset driver for the Compaq TriFlex IDE controller.
|
|
*
|
|
* Known to work with the Compaq Workstation 5x00 series.
|
|
*
|
|
* Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
|
|
* Author: Torben Mathiasen <torben.mathiasen@hp.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Loosely based on the piix & svwks drivers.
|
|
*
|
|
* Documentation:
|
|
* Not publicly available.
|
|
*/
|
|
|
|
#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_triflex"
|
|
#define DRV_VERSION "0.2.8"
|
|
|
|
/**
|
|
* triflex_prereset - probe begin
|
|
* @link: ATA link
|
|
* @deadline: deadline jiffies for the operation
|
|
*
|
|
* Set up cable type and use generic probe init
|
|
*/
|
|
|
|
static int triflex_prereset(struct ata_link *link, unsigned long deadline)
|
|
{
|
|
static const struct pci_bits triflex_enable_bits[] = {
|
|
{ 0x80, 1, 0x01, 0x01 },
|
|
{ 0x80, 1, 0x02, 0x02 }
|
|
};
|
|
|
|
struct ata_port *ap = link->ap;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
|
|
if (!pci_test_config_bits(pdev, &triflex_enable_bits[ap->port_no]))
|
|
return -ENOENT;
|
|
|
|
return ata_sff_prereset(link, deadline);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* triflex_load_timing - timing configuration
|
|
* @ap: ATA interface
|
|
* @adev: Device on the bus
|
|
* @speed: speed to configure
|
|
*
|
|
* The Triflex has one set of timings per device per channel. This
|
|
* means we must do some switching. As the PIO and DMA timings don't
|
|
* match we have to do some reloading unlike PIIX devices where tuning
|
|
* tricks can avoid it.
|
|
*/
|
|
|
|
static void triflex_load_timing(struct ata_port *ap, struct ata_device *adev, int speed)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
u32 timing = 0;
|
|
u32 triflex_timing, old_triflex_timing;
|
|
int channel_offset = ap->port_no ? 0x74: 0x70;
|
|
unsigned int is_slave = (adev->devno != 0);
|
|
|
|
|
|
pci_read_config_dword(pdev, channel_offset, &old_triflex_timing);
|
|
triflex_timing = old_triflex_timing;
|
|
|
|
switch(speed)
|
|
{
|
|
case XFER_MW_DMA_2:
|
|
timing = 0x0103;break;
|
|
case XFER_MW_DMA_1:
|
|
timing = 0x0203;break;
|
|
case XFER_MW_DMA_0:
|
|
timing = 0x0808;break;
|
|
case XFER_SW_DMA_2:
|
|
case XFER_SW_DMA_1:
|
|
case XFER_SW_DMA_0:
|
|
timing = 0x0F0F;break;
|
|
case XFER_PIO_4:
|
|
timing = 0x0202;break;
|
|
case XFER_PIO_3:
|
|
timing = 0x0204;break;
|
|
case XFER_PIO_2:
|
|
timing = 0x0404;break;
|
|
case XFER_PIO_1:
|
|
timing = 0x0508;break;
|
|
case XFER_PIO_0:
|
|
timing = 0x0808;break;
|
|
default:
|
|
BUG();
|
|
}
|
|
triflex_timing &= ~ (0xFFFF << (16 * is_slave));
|
|
triflex_timing |= (timing << (16 * is_slave));
|
|
|
|
if (triflex_timing != old_triflex_timing)
|
|
pci_write_config_dword(pdev, channel_offset, triflex_timing);
|
|
}
|
|
|
|
/**
|
|
* triflex_set_piomode - set initial PIO mode data
|
|
* @ap: ATA interface
|
|
* @adev: ATA device
|
|
*
|
|
* Use the timing loader to set up the PIO mode. We have to do this
|
|
* because DMA start/stop will only be called once DMA occurs. If there
|
|
* has been no DMA then the PIO timings are still needed.
|
|
*/
|
|
static void triflex_set_piomode(struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
triflex_load_timing(ap, adev, adev->pio_mode);
|
|
}
|
|
|
|
/**
|
|
* triflex_dma_start - DMA start callback
|
|
* @qc: Command in progress
|
|
*
|
|
* Usually drivers set the DMA timing at the point the set_dmamode call
|
|
* is made. Triflex however requires we load new timings on the
|
|
* transition or keep matching PIO/DMA pairs (ie MWDMA2/PIO4 etc).
|
|
* We load the DMA timings just before starting DMA and then restore
|
|
* the PIO timing when the DMA is finished.
|
|
*/
|
|
|
|
static void triflex_bmdma_start(struct ata_queued_cmd *qc)
|
|
{
|
|
triflex_load_timing(qc->ap, qc->dev, qc->dev->dma_mode);
|
|
ata_bmdma_start(qc);
|
|
}
|
|
|
|
/**
|
|
* triflex_dma_stop - DMA stop callback
|
|
* @ap: ATA interface
|
|
* @adev: ATA device
|
|
*
|
|
* We loaded new timings in dma_start, as a result we need to restore
|
|
* the PIO timings in dma_stop so that the next command issue gets the
|
|
* right clock values.
|
|
*/
|
|
|
|
static void triflex_bmdma_stop(struct ata_queued_cmd *qc)
|
|
{
|
|
ata_bmdma_stop(qc);
|
|
triflex_load_timing(qc->ap, qc->dev, qc->dev->pio_mode);
|
|
}
|
|
|
|
static struct scsi_host_template triflex_sht = {
|
|
ATA_BMDMA_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations triflex_port_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.bmdma_start = triflex_bmdma_start,
|
|
.bmdma_stop = triflex_bmdma_stop,
|
|
.cable_detect = ata_cable_40wire,
|
|
.set_piomode = triflex_set_piomode,
|
|
.prereset = triflex_prereset,
|
|
};
|
|
|
|
static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
static const struct ata_port_info info = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.port_ops = &triflex_port_ops
|
|
};
|
|
const struct ata_port_info *ppi[] = { &info, NULL };
|
|
|
|
ata_print_version_once(&dev->dev, DRV_VERSION);
|
|
|
|
return ata_pci_bmdma_init_one(dev, ppi, &triflex_sht, NULL, 0);
|
|
}
|
|
|
|
static const struct pci_device_id triflex[] = {
|
|
{ PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), },
|
|
|
|
{ },
|
|
};
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int triflex_ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
|
|
{
|
|
struct ata_host *host = pci_get_drvdata(pdev);
|
|
int rc = 0;
|
|
|
|
rc = ata_host_suspend(host, mesg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/*
|
|
* We must not disable or powerdown the device.
|
|
* APM bios refuses to suspend if IDE is not accessible.
|
|
*/
|
|
pci_save_state(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
static struct pci_driver triflex_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = triflex,
|
|
.probe = triflex_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.suspend = triflex_ata_pci_device_suspend,
|
|
.resume = ata_pci_device_resume,
|
|
#endif
|
|
};
|
|
|
|
module_pci_driver(triflex_pci_driver);
|
|
|
|
MODULE_AUTHOR("Alan Cox");
|
|
MODULE_DESCRIPTION("low-level driver for Compaq Triflex");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, triflex);
|
|
MODULE_VERSION(DRV_VERSION);
|