// SPDX-License-Identifier: GPL-2.0-only
/*
* pata_via . c - VIA PATA for new ATA layer
* ( C ) 2005 - 2006 Red Hat Inc
*
* Documentation
* Most chipset documentation available under NDA only
*
* VIA version guide
* VIA VT82C561 - early design , uses ata_generic currently
* VIA VT82C576 - MWDMA , 33 Mhz
* VIA VT82C586 - MWDMA , 33 Mhz
* VIA VT82C586a - Added UDMA to 33 Mhz
* VIA VT82C586b - UDMA33
* VIA VT82C596a - Nonfunctional UDMA66
* VIA VT82C596b - Working UDMA66
* VIA VT82C686 - Nonfunctional UDMA66
* VIA VT82C686a - Working UDMA66
* VIA VT82C686b - Updated to UDMA100
* VIA VT8231 - UDMA100
* VIA VT8233 - UDMA100
* VIA VT8233a - UDMA133
* VIA VT8233c - UDMA100
* VIA VT8235 - UDMA133
* VIA VT8237 - UDMA133
* VIA VT8237A - UDMA133
* VIA VT8237S - UDMA133
* VIA VT8251 - UDMA133
*
* Most registers remain compatible across chips . Others start reserved
* and acquire sensible semantics if set to 1 ( eg cable detect ) . A few
* exceptions exist , notably around the FIFO settings .
*
* One additional quirk of the VIA design is that like ALi they use few
* PCI IDs for a lot of chips .
*
* Based heavily on :
*
* Version 3 . 38
*
* VIA IDE driver for Linux . Supported southbridges :
*
* vt82c576 , vt82c586 , vt82c586a , vt82c586b , vt82c596a , vt82c596b ,
* vt82c686 , vt82c686a , vt82c686b , vt8231 , vt8233 , vt8233c , vt8233a ,
* vt8235 , vt8237
*
* Copyright ( c ) 2000 - 2002 Vojtech Pavlik
*
* Based on the work of :
* Michel Aubry
* Jeff Garzik
* Andre Hedrick
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/dmi.h>
#define DRV_NAME "pata_via"
#define DRV_VERSION "0.3.4"
enum {
VIA_BAD_PREQ = 0 x01, /* Crashes if PREQ# till DDACK# set */
VIA_BAD_CLK66 = 0 x02, /* 66 MHz clock doesn't work correctly */
VIA_SET_FIFO = 0 x04, /* Needs to have FIFO split set */
VIA_NO_UNMASK = 0 x08, /* Doesn't work with IRQ unmasking on */
VIA_BAD_ID = 0 x10, /* Has wrong vendor ID (0x1107) */
VIA_BAD_AST = 0 x20, /* Don't touch Address Setup Timing */
VIA_NO_ENABLES = 0 x40, /* Has no enablebits */
VIA_SATA_PATA = 0 x80, /* SATA/PATA combined configuration */
};
enum {
VIA_IDFLAG_SINGLE = (1 << 0 ), /* single channel controller) */
};
/*
* VIA SouthBridge chips .
*/
static const struct via_isa_bridge {
const char *name;
u16 id;
u8 rev_min;
u8 rev_max;
u8 udma_mask;
u8 flags;
} via_isa_bridges[] = {
{ "vx855" , PCI_DEVICE_ID_VIA_VX855, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
{ "vx800" , PCI_DEVICE_ID_VIA_VX800, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
{ "vt8261" , PCI_DEVICE_ID_VIA_8261, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8237s" , PCI_DEVICE_ID_VIA_8237S, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8251" , PCI_DEVICE_ID_VIA_8251, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "cx700" , PCI_DEVICE_ID_VIA_CX700, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
{ "vt6410" , PCI_DEVICE_ID_VIA_6410, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST | VIA_NO_ENABLES },
{ "vt6415" , PCI_DEVICE_ID_VIA_6415, 0 x00, 0 xff, ATA_UDMA6, VIA_BAD_AST | VIA_NO_ENABLES },
{ "vt8237a" , PCI_DEVICE_ID_VIA_8237A, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8237" , PCI_DEVICE_ID_VIA_8237, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8235" , PCI_DEVICE_ID_VIA_8235, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8233a" , PCI_DEVICE_ID_VIA_8233A, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ "vt8233c" , PCI_DEVICE_ID_VIA_8233C_0, 0 x00, 0 x2f, ATA_UDMA5, },
{ "vt8233" , PCI_DEVICE_ID_VIA_8233_0, 0 x00, 0 x2f, ATA_UDMA5, },
{ "vt8231" , PCI_DEVICE_ID_VIA_8231, 0 x00, 0 x2f, ATA_UDMA5, },
{ "vt82c686b" , PCI_DEVICE_ID_VIA_82C686, 0 x40, 0 x4f, ATA_UDMA5, },
{ "vt82c686a" , PCI_DEVICE_ID_VIA_82C686, 0 x10, 0 x2f, ATA_UDMA4, },
{ "vt82c686" , PCI_DEVICE_ID_VIA_82C686, 0 x00, 0 x0f, ATA_UDMA2, VIA_BAD_CLK66 },
{ "vt82c596b" , PCI_DEVICE_ID_VIA_82C596, 0 x10, 0 x2f, ATA_UDMA4, },
{ "vt82c596a" , PCI_DEVICE_ID_VIA_82C596, 0 x00, 0 x0f, ATA_UDMA2, VIA_BAD_CLK66 },
{ "vt82c586b" , PCI_DEVICE_ID_VIA_82C586_0, 0 x47, 0 x4f, ATA_UDMA2, VIA_SET_FIFO },
{ "vt82c586b" , PCI_DEVICE_ID_VIA_82C586_0, 0 x40, 0 x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ },
{ "vt82c586b" , PCI_DEVICE_ID_VIA_82C586_0, 0 x30, 0 x3f, ATA_UDMA2, VIA_SET_FIFO },
{ "vt82c586a" , PCI_DEVICE_ID_VIA_82C586_0, 0 x20, 0 x2f, ATA_UDMA2, VIA_SET_FIFO },
{ "vt82c586" , PCI_DEVICE_ID_VIA_82C586_0, 0 x00, 0 x0f, 0 x00, VIA_SET_FIFO },
{ "vt82c576" , PCI_DEVICE_ID_VIA_82C576, 0 x00, 0 x2f, 0 x00, VIA_SET_FIFO | VIA_NO_UNMASK },
{ "vt82c576" , PCI_DEVICE_ID_VIA_82C576, 0 x00, 0 x2f, 0 x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
{ "vtxxxx" , PCI_DEVICE_ID_VIA_ANON, 0 x00, 0 x2f, ATA_UDMA6, VIA_BAD_AST },
{ NULL }
};
static const struct dmi_system_id no_atapi_dma_dmi_table[] = {
{
.ident = "AVERATEC 3200" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AVERATEC" ),
DMI_MATCH(DMI_BOARD_NAME, "3200" ),
},
},
{ }
};
struct via_port {
u8 cached_device;
};
/*
* Cable special cases
*/
static const struct dmi_system_id cable_dmi_table[] = {
{
.ident = "Acer Ferrari 3400" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc." ),
DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400" ),
},
},
{ }
};
static int via_cable_override(struct pci_dev *pdev)
{
/* Systems by DMI */
if (dmi_check_system(cable_dmi_table))
return 1 ;
/* Arima W730-K8/Targa Visionary 811/... */
if (pdev->subsystem_vendor == 0 x161F && pdev->subsystem_device == 0 x2032)
return 1 ;
return 0 ;
}
/**
* via_cable_detect - cable detection
* @ ap : ATA port
*
* Perform cable detection . Actually for the VIA case the BIOS
* already did this for us . We read the values provided by the
* BIOS . If you are using an 8235 in a non - PC configuration you
* may need to update this code .
*
* Hotplug also impacts on this .
*/
static int via_cable_detect(struct ata_port *ap) {
const struct via_isa_bridge *config = ap->host->private_data;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u32 ata66;
if (via_cable_override(pdev))
return ATA_CBL_PATA40_SHORT;
if ((config->flags & VIA_SATA_PATA) && ap->port_no == 0 )
return ATA_CBL_SATA;
/* Early chips are 40 wire */
if (config->udma_mask < ATA_UDMA4)
return ATA_CBL_PATA40;
/* UDMA 66 chips have only drive side logic */
else if (config->udma_mask < ATA_UDMA5)
return ATA_CBL_PATA_UNK;
/* UDMA 100 or later */
pci_read_config_dword(pdev, 0 x50, &ata66);
/* Check both the drive cable reporting bits, we might not have
two drives */
if (ata66 & (0 x10100000 >> (16 * ap->port_no)))
return ATA_CBL_PATA80;
/* Check with ACPI so we can spot BIOS reported SATA bridges */
return ata_acpi_cbl_pata_type(ap);
}
static int via_pre_reset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
const struct via_isa_bridge *config = ap->host->private_data;
if (!(config->flags & VIA_NO_ENABLES)) {
static const struct pci_bits via_enable_bits[] = {
{ 0 x40, 1 , 0 x02, 0 x02 },
{ 0 x40, 1 , 0 x01, 0 x01 }
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &via_enable_bits[ap->port_no]))
return -ENOENT;
}
return ata_sff_prereset(link, deadline);
}
/**
* via_do_set_mode - set transfer mode data
* @ ap : ATA interface
* @ adev : ATA device
* @ mode : ATA mode being programmed
* @ set_ast : Set to program address setup
* @ udma_type : UDMA mode / format of registers
*
* Program the VIA registers for DMA and PIO modes . Uses the ata timing
* support in order to compute modes .
*
* FIXME : Hotplug will require we serialize multiple mode changes
* on the two channels .
*/
static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev,
int mode, int set_ast, int udma_type)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct ata_device *peer = ata_dev_pair(adev);
struct ata_timing t, p;
const int via_clock = 33333 ; /* Bus clock in kHz */
const int T = 1000000000 / via_clock;
int UT = T;
int ut;
int offset = 3 - (2 *ap->port_no) - adev->devno;
switch (udma_type) {
case ATA_UDMA4:
UT = T / 2 ; break ;
case ATA_UDMA5:
UT = T / 3 ; break ;
case ATA_UDMA6:
UT = T / 4 ; break ;
}
/* Calculate the timing values we require */
ata_timing_compute(adev, mode, &t, T, UT);
/* We share 8bit timing so we must merge the constraints */
if (peer) {
if (peer->pio_mode) {
ata_timing_compute(peer, peer->pio_mode, &p, T, UT);
ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT);
}
}
/* Address setup is programmable but breaks on UDMA133 setups */
if (set_ast) {
u8 setup; /* 2 bits per drive */
int shift = 2 * offset;
pci_read_config_byte(pdev, 0 x4C, &setup);
setup &= ~(3 << shift);
setup |= (clamp_val(t.setup, 1 , 4 ) - 1 ) << shift;
pci_write_config_byte(pdev, 0 x4C, setup);
}
/* Load the PIO mode bits */
pci_write_config_byte(pdev, 0 x4F - ap->port_no,
((clamp_val(t.act8b, 1 , 16 ) - 1 ) << 4 ) | (clamp_val(t.rec8b, 1 , 16 ) - 1 ));
pci_write_config_byte(pdev, 0 x48 + offset,
((clamp_val(t.active, 1 , 16 ) - 1 ) << 4 ) | (clamp_val(t.recover, 1 , 16 ) - 1 ));
/* Load the UDMA bits according to type */
switch (udma_type) {
case ATA_UDMA2:
default :
ut = t.udma ? (0 xe0 | (clamp_val(t.udma, 2 , 5 ) - 2 )) : 0 x03;
break ;
case ATA_UDMA4:
ut = t.udma ? (0 xe8 | (clamp_val(t.udma, 2 , 9 ) - 2 )) : 0 x0f;
break ;
case ATA_UDMA5:
ut = t.udma ? (0 xe0 | (clamp_val(t.udma, 2 , 9 ) - 2 )) : 0 x07;
break ;
case ATA_UDMA6:
ut = t.udma ? (0 xe0 | (clamp_val(t.udma, 2 , 9 ) - 2 )) : 0 x07;
break ;
}
/* Set UDMA unless device is not UDMA capable */
if (udma_type) {
u8 udma_etc;
pci_read_config_byte(pdev, 0 x50 + offset, &udma_etc);
/* clear transfer mode bit */
udma_etc &= ~0 x20;
if (t.udma) {
/* preserve 80-wire cable detection bit */
udma_etc &= 0 x10;
udma_etc |= ut;
}
pci_write_config_byte(pdev, 0 x50 + offset, udma_etc);
}
}
static void via_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
const struct via_isa_bridge *config = ap->host->private_data;
int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1 ;
via_do_set_mode(ap, adev, adev->pio_mode, set_ast, config->udma_mask);
}
static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
const struct via_isa_bridge *config = ap->host->private_data;
int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1 ;
via_do_set_mode(ap, adev, adev->dma_mode, set_ast, config->udma_mask);
}
/**
* via_mode_filter - filter buggy device / mode pairs
* @ dev : ATA device
* @ mask : Mode bitmask
*
* We need to apply some minimal filtering for old controllers and at least
* one breed of Transcend SSD . Return the updated mask .
*/
static unsigned int via_mode_filter(struct ata_device *dev, unsigned int mask)
{
struct ata_host *host = dev->link->ap->host;
const struct via_isa_bridge *config = host->private_data;
unsigned char model_num[ATA_ID_PROD_LEN + 1 ];
if (config->id == PCI_DEVICE_ID_VIA_82C586_0) {
ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof (model_num));
if (strcmp(model_num, "TS64GSSD25-M" ) == 0 ) {
ata_dev_warn(dev,
"disabling UDMA mode due to reported lockups with this device\n" );
mask &= ~ ATA_MASK_UDMA;
}
}
if (dev->class == ATA_DEV_ATAPI &&
(dmi_check_system(no_atapi_dma_dmi_table) ||
config->id == PCI_DEVICE_ID_VIA_6415)) {
ata_dev_warn(dev, "controller locks up on ATAPI DMA, forcing PIO\n" );
mask &= ATA_MASK_PIO;
}
return mask;
}
/**
* via_tf_load - send taskfile registers to host controller
* @ ap : Port to which output is sent
* @ tf : ATA taskfile register set
*
* Outputs ATA taskfile to standard ATA host controller .
*
* Note : This is to fix the internal bug of via chipsets , which
* will reset the device register after changing the IEN bit on
* ctl register
*/
static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
struct via_port *vp = ap->private_data;
unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
int newctl = 0 ;
if (tf->ctl != ap->last_ctl) {
iowrite8(tf->ctl, ioaddr->ctl_addr);
ap->last_ctl = tf->ctl;
ata_wait_idle(ap);
newctl = 1 ;
}
if (tf->flags & ATA_TFLAG_DEVICE) {
iowrite8(tf->device, ioaddr->device_addr);
vp->cached_device = tf->device;
} else if (newctl)
iowrite8(vp->cached_device, ioaddr->device_addr);
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
WARN_ON_ONCE(!ioaddr->ctl_addr);
iowrite8(tf->hob_feature, ioaddr->feature_addr);
iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
iowrite8(tf->hob_lbam, ioaddr->lbam_addr);
iowrite8(tf->hob_lbah, ioaddr->lbah_addr);
}
if (is_addr) {
iowrite8(tf->feature, ioaddr->feature_addr);
iowrite8(tf->nsect, ioaddr->nsect_addr);
iowrite8(tf->lbal, ioaddr->lbal_addr);
iowrite8(tf->lbam, ioaddr->lbam_addr);
iowrite8(tf->lbah, ioaddr->lbah_addr);
}
ata_wait_idle(ap);
}
static int via_port_start(struct ata_port *ap)
{
struct via_port *vp;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int ret = ata_bmdma_port_start(ap);
if (ret < 0 )
return ret;
vp = devm_kzalloc(&pdev->dev, sizeof (struct via_port), GFP_KERNEL);
if (vp == NULL)
return -ENOMEM;
ap->private_data = vp;
return 0 ;
}
static const struct scsi_host_template via_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
static struct ata_port_operations via_port_ops = {
.inherits = &ata_bmdma_port_ops,
.cable_detect = via_cable_detect,
.set_piomode = via_set_piomode,
.set_dmamode = via_set_dmamode,
.reset.prereset = via_pre_reset,
.sff_tf_load = via_tf_load,
.port_start = via_port_start,
.mode_filter = via_mode_filter,
};
static struct ata_port_operations via_port_ops_noirq = {
.inherits = &via_port_ops,
.sff_data_xfer = ata_sff_data_xfer32,
};
/**
* via_config_fifo - set up the FIFO
* @ pdev : PCI device
* @ flags : configuration flags
*
* Set the FIFO properties for this device if necessary . Used both on
* set up and on and the resume path
*/
static void via_config_fifo(struct pci_dev *pdev, unsigned int flags)
{
u8 enable;
/* 0x40 low bits indicate enabled channels */
pci_read_config_byte(pdev, 0 x40 , &enable);
enable &= 3 ;
if (flags & VIA_SET_FIFO) {
static const u8 fifo_setting[4 ] = {0 x00, 0 x60, 0 x00, 0 x20};
u8 fifo;
pci_read_config_byte(pdev, 0 x43, &fifo);
/* Clear PREQ# until DDACK# for errata */
if (flags & VIA_BAD_PREQ)
fifo &= 0 x7F;
else
fifo &= 0 x9f;
/* Turn on FIFO for enabled channels */
fifo |= fifo_setting[enable];
pci_write_config_byte(pdev, 0 x43, fifo);
}
}
static void via_fixup(struct pci_dev *pdev, const struct via_isa_bridge *config)
{
u32 timing;
/* Initialise the FIFO for the enabled channels. */
via_config_fifo(pdev, config->flags);
if (config->udma_mask == ATA_UDMA4) {
/* The 66 MHz devices require we enable the clock */
pci_read_config_dword(pdev, 0 x50, &timing);
timing |= 0 x80008;
pci_write_config_dword(pdev, 0 x50, timing);
}
if (config->flags & VIA_BAD_CLK66) {
/* Disable the 66MHz clock on problem devices */
pci_read_config_dword(pdev, 0 x50, &timing);
timing &= ~0 x80008;
pci_write_config_dword(pdev, 0 x50, timing);
}
}
/**
* via_init_one - discovery callback
* @ pdev : PCI device
* @ id : PCI table info
*
* A VIA IDE interface has been discovered . Figure out what revision
* and perform configuration work before handing it to the ATA layer
*/
static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
/* Early VIA without UDMA support */
static const struct ata_port_info via_mwdma_info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.port_ops = &via_port_ops
};
/* Ditto with IRQ masking required */
static const struct ata_port_info via_mwdma_info_borked = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.port_ops = &via_port_ops_noirq,
};
/* VIA UDMA 33 devices (and borked 66) */
static const struct ata_port_info via_udma33_info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA2,
.port_ops = &via_port_ops
};
/* VIA UDMA 66 devices */
static const struct ata_port_info via_udma66_info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA4,
.port_ops = &via_port_ops
};
/* VIA UDMA 100 devices */
static const struct ata_port_info via_udma100_info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
.port_ops = &via_port_ops
};
/* UDMA133 with bad AST (All current 133) */
static const struct ata_port_info via_udma133_info = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6, /* FIXME: should check north bridge */
.port_ops = &via_port_ops
};
const struct ata_port_info *ppi[] = { NULL, NULL };
struct pci_dev *isa;
const struct via_isa_bridge *config;
u8 enable;
unsigned long flags = id->driver_data;
int rc;
ata_print_version_once(&pdev->dev, DRV_VERSION);
rc = pcim_enable_device(pdev);
if (rc)
return rc;
if (flags & VIA_IDFLAG_SINGLE)
ppi[1 ] = &ata_dummy_port_info;
/* To find out how the IDE will behave and what features we
actually have to look at the bridge not the IDE controller */
for (config = via_isa_bridges; config->id != PCI_DEVICE_ID_VIA_ANON;
config++)
if ((isa = pci_get_device(PCI_VENDOR_ID_VIA +
!!(config->flags & VIA_BAD_ID),
config->id, NULL))) {
u8 rev = isa->revision;
pci_dev_put(isa);
if ((id->device == 0 x0415 || id->device == 0 x3164) &&
(config->id != id->device))
continue ;
if (rev >= config->rev_min && rev <= config->rev_max)
break ;
}
if (!(config->flags & VIA_NO_ENABLES)) {
/* 0x40 low bits indicate enabled channels */
pci_read_config_byte(pdev, 0 x40 , &enable);
enable &= 3 ;
if (enable == 0 )
return -ENODEV;
}
/* Clock set up */
switch (config->udma_mask) {
case 0 x00:
if (config->flags & VIA_NO_UNMASK)
ppi[0 ] = &via_mwdma_info_borked;
else
ppi[0 ] = &via_mwdma_info;
break ;
case ATA_UDMA2:
ppi[0 ] = &via_udma33_info;
break ;
case ATA_UDMA4:
ppi[0 ] = &via_udma66_info;
break ;
case ATA_UDMA5:
ppi[0 ] = &via_udma100_info;
break ;
case ATA_UDMA6:
ppi[0 ] = &via_udma133_info;
break ;
default :
WARN_ON(1 );
return -ENODEV;
}
via_fixup(pdev, config);
/* We have established the device type, now fire it up */
return ata_pci_bmdma_init_one(pdev, ppi, &via_sht, (void *)config, 0 );
}
#ifdef CONFIG_PM_SLEEP
/**
* via_reinit_one - reinit after resume
* @ pdev : PCI device
*
* Called when the VIA PATA device is resumed . We must then
* reconfigure the fifo and other setup we may have altered . In
* addition the kernel needs to have the resume methods on PCI
* quirk supported .
*/
static int via_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;
via_fixup(pdev, host->private_data);
ata_host_resume(host);
return 0 ;
}
#endif
static const struct pci_device_id via[] = {
{ PCI_VDEVICE(VIA, 0 x0415), },
{ PCI_VDEVICE(VIA, 0 x0571), },
{ PCI_VDEVICE(VIA, 0 x0581), },
{ PCI_VDEVICE(VIA, 0 x1571), },
{ PCI_VDEVICE(VIA, 0 x3164), },
{ PCI_VDEVICE(VIA, 0 x5324), },
{ PCI_VDEVICE(VIA, 0 xC409), VIA_IDFLAG_SINGLE },
{ PCI_VDEVICE(VIA, 0 x9001), VIA_IDFLAG_SINGLE },
{ },
};
static struct pci_driver via_pci_driver = {
.name = DRV_NAME,
.id_table = via,
.probe = via_init_one,
.remove = ata_pci_remove_one,
#ifdef CONFIG_PM_SLEEP
.suspend = ata_pci_device_suspend,
.resume = via_reinit_one,
#endif
};
module_pci_driver(via_pci_driver);
MODULE_AUTHOR("Alan Cox" );
MODULE_DESCRIPTION("low-level driver for VIA PATA" );
MODULE_LICENSE("GPL" );
MODULE_DEVICE_TABLE(pci, via);
MODULE_VERSION(DRV_VERSION);
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(vorverarbeitet am 2026-09-27)
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