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linux/drivers/ata/pata_via.c
Tejun Heo 464cf177df libata: always use polling SETXFER 
Several people have reported LITE-ON LTR-48246S detection failed
because SETXFER fails.  It seems the device raises IRQ too early after
SETXFER.  This is controller independent.  The same problem has been
reported for different controllers.

So, now we have pata_via where the controller raises IRQ before it's
ready after SETXFER and a device which does similar thing.  This patch
makes libata always execute SETXFER via polling.  As this only happens
during EH, performance impact is nil.  Setting ATA_TFLAG_POLLING is
also moved from issue hot path to ata_dev_set_xfermode() - the only
place where SETXFER can be issued.

Note that ATA_TFLAG_POLLING applies only to drivers which implement
SFF TF interface and use libata HSM.  More advanced controllers ignore
the flag.  This doesn't matter for this fix as SFF TF controllers are
the problematic ones.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-04 16:48:34 -04:00

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/*
* pata_via.c - VIA PATA for new ATA layer
* (C) 2005-2006 Red Hat Inc
* Alan Cox <alan@redhat.com>
*
* Documentation
* Most chipset documentation available under NDA only
*
* VIA version guide
* VIA VT82C561 - early design, uses ata_generic currently
* VIA VT82C576 - MWDMA, 33Mhz
* VIA VT82C586 - MWDMA, 33Mhz
* VIA VT82C586a - Added UDMA to 33Mhz
* 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 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/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/dmi.h>
#define DRV_NAME "pata_via"
#define DRV_VERSION "0.3.1"
/*
* The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
* driver.
*/
enum {
VIA_UDMA = 0x007,
VIA_UDMA_NONE = 0x000,
VIA_UDMA_33 = 0x001,
VIA_UDMA_66 = 0x002,
VIA_UDMA_100 = 0x003,
VIA_UDMA_133 = 0x004,
VIA_BAD_PREQ = 0x010, /* Crashes if PREQ# till DDACK# set */
VIA_BAD_CLK66 = 0x020, /* 66 MHz clock doesn't work correctly */
VIA_SET_FIFO = 0x040, /* Needs to have FIFO split set */
VIA_NO_UNMASK = 0x080, /* Doesn't work with IRQ unmasking on */
VIA_BAD_ID = 0x100, /* Has wrong vendor ID (0x1107) */
VIA_BAD_AST = 0x200, /* Don't touch Address Setup Timing */
VIA_NO_ENABLES = 0x400, /* Has no enablebits */
};
/*
* VIA SouthBridge chips.
*/
static const struct via_isa_bridge {
const char *name;
u16 id;
u8 rev_min;
u8 rev_max;
u16 flags;
} via_isa_bridges[] = {
{ "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_NO_ENABLES},
{ "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
{ "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, VIA_UDMA_100 },
{ "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, VIA_UDMA_100 },
{ "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, VIA_UDMA_100 },
{ "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, VIA_UDMA_100 },
{ "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, VIA_UDMA_66 },
{ "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 },
{ "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, VIA_UDMA_66 },
{ "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 },
{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, VIA_UDMA_33 | VIA_SET_FIFO },
{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, VIA_UDMA_33 | VIA_SET_FIFO | VIA_BAD_PREQ },
{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, VIA_UDMA_33 | VIA_SET_FIFO },
{ "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, VIA_UDMA_33 | VIA_SET_FIFO },
{ "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, VIA_UDMA_NONE | VIA_SET_FIFO },
{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK },
{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
{ NULL }
};
/*
* Cable special cases
*/
static 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;
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;
/* Early chips are 40 wire */
if ((config->flags & VIA_UDMA) < VIA_UDMA_66)
return ATA_CBL_PATA40;
/* UDMA 66 chips have only drive side logic */
else if((config->flags & VIA_UDMA) < VIA_UDMA_100)
return ATA_CBL_PATA_UNK;
/* UDMA 100 or later */
pci_read_config_dword(pdev, 0x50, &ata66);
/* Check both the drive cable reporting bits, we might not have
two drives */
if (ata66 & (0x10100000 >> (16 * ap->port_no)))
return ATA_CBL_PATA80;
return ATA_CBL_PATA40;
}
static int via_pre_reset(struct ata_port *ap, unsigned long deadline)
{
const struct via_isa_bridge *config = ap->host->private_data;
if (!(config->flags & VIA_NO_ENABLES)) {
static const struct pci_bits via_enable_bits[] = {
{ 0x40, 1, 0x02, 0x02 },
{ 0x40, 1, 0x01, 0x01 }
};
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_std_prereset(ap, deadline);
}
/**
* via_error_handler - reset for VIA chips
* @ap: ATA port
*
* Handle the reset callback for the later chips with cable detect
*/
static void via_error_handler(struct ata_port *ap)
{
ata_bmdma_drive_eh(ap, via_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/**
* via_do_set_mode - set initial PIO mode data
* @ap: ATA interface
* @adev: ATA device
* @mode: ATA mode being programmed
* @tdiv: Clocks per PCI clock
* @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 tdiv, 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;
static int via_clock = 33333; /* Bus clock in kHZ - ought to be tunable one day */
unsigned long T = 1000000000 / via_clock;
unsigned long UT = T/tdiv;
int ut;
int offset = 3 - (2*ap->port_no) - adev->devno;
/* 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, 0x4C, &setup);
setup &= ~(3 << shift);
setup |= FIT(t.setup, 1, 4) << shift; /* 1,4 or 1,4 - 1 FIXME */
pci_write_config_byte(pdev, 0x4C, setup);
}
/* Load the PIO mode bits */
pci_write_config_byte(pdev, 0x4F - ap->port_no,
((FIT(t.act8b, 1, 16) - 1) << 4) | (FIT(t.rec8b, 1, 16) - 1));
pci_write_config_byte(pdev, 0x48 + offset,
((FIT(t.active, 1, 16) - 1) << 4) | (FIT(t.recover, 1, 16) - 1));
/* Load the UDMA bits according to type */
switch(udma_type) {
default:
/* BUG() ? */
/* fall through */
case 33:
ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 5) - 2)) : 0x03;
break;
case 66:
ut = t.udma ? (0xe8 | (FIT(t.udma, 2, 9) - 2)) : 0x0f;
break;
case 100:
ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07;
break;
case 133:
ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07;
break;
}
/* Set UDMA unless device is not UDMA capable */
if (udma_type)
pci_write_config_byte(pdev, 0x50 + offset, ut);
}
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;
int mode = config->flags & VIA_UDMA;
static u8 tclock[5] = { 1, 1, 2, 3, 4 };
static u8 udma[5] = { 0, 33, 66, 100, 133 };
via_do_set_mode(ap, adev, adev->pio_mode, tclock[mode], set_ast, udma[mode]);
}
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;
int mode = config->flags & VIA_UDMA;
static u8 tclock[5] = { 1, 1, 2, 3, 4 };
static u8 udma[5] = { 0, 33, 66, 100, 133 };
via_do_set_mode(ap, adev, adev->dma_mode, tclock[mode], set_ast, udma[mode]);
}
static struct scsi_host_template via_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,
.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,
.bios_param = ata_std_bios_param,
};
static struct ata_port_operations via_port_ops = {
.port_disable = ata_port_disable,
.set_piomode = via_set_piomode,
.set_dmamode = via_set_dmamode,
.mode_filter = ata_pci_default_filter,
.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 = via_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = via_cable_detect,
.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_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.irq_ack = ata_irq_ack,
.port_start = ata_port_start,
};
static struct ata_port_operations via_port_ops_noirq = {
.port_disable = ata_port_disable,
.set_piomode = via_set_piomode,
.set_dmamode = via_set_dmamode,
.mode_filter = ata_pci_default_filter,
.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 = via_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = via_cable_detect,
.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_data_xfer_noirq,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.irq_ack = ata_irq_ack,
.port_start = ata_port_start,
};
/**
* via_config_fifo - set up the FIFO
* @pdev: PCI device
* @flags: configuration flags
*
* Set the FIFO properties for this device if neccessary. 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, 0x40 , &enable);
enable &= 3;
if (flags & VIA_SET_FIFO) {
static const u8 fifo_setting[4] = {0x00, 0x60, 0x00, 0x20};
u8 fifo;
pci_read_config_byte(pdev, 0x43, &fifo);
/* Clear PREQ# until DDACK# for errata */
if (flags & VIA_BAD_PREQ)
fifo &= 0x7F;
else
fifo &= 0x9f;
/* Turn on FIFO for enabled channels */
fifo |= fifo_setting[enable];
pci_write_config_byte(pdev, 0x43, fifo);
}
}
/**
* 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 = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.port_ops = &via_port_ops
};
/* Ditto with IRQ masking required */
static const struct ata_port_info via_mwdma_info_borked = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.port_ops = &via_port_ops_noirq,
};
/* VIA UDMA 33 devices (and borked 66) */
static const struct ata_port_info via_udma33_info = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x7,
.port_ops = &via_port_ops
};
/* VIA UDMA 66 devices */
static const struct ata_port_info via_udma66_info = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x1f,
.port_ops = &via_port_ops
};
/* VIA UDMA 100 devices */
static const struct ata_port_info via_udma100_info = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x3f,
.port_ops = &via_port_ops
};
/* UDMA133 with bad AST (All current 133) */
static const struct ata_port_info via_udma133_info = {
.sht = &via_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x7f, /* FIXME: should check north bridge */
.port_ops = &via_port_ops
};
struct ata_port_info type;
const struct ata_port_info *ppi[] = { &type, NULL };
struct pci_dev *isa = NULL;
const struct via_isa_bridge *config;
static int printed_version;
u8 t;
u8 enable;
u32 timing;
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
/* 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; config++)
if ((isa = pci_get_device(PCI_VENDOR_ID_VIA +
!!(config->flags & VIA_BAD_ID),
config->id, NULL))) {
pci_read_config_byte(isa, PCI_REVISION_ID, &t);
if (t >= config->rev_min &&
t <= config->rev_max)
break;
pci_dev_put(isa);
}
if (!config->id) {
printk(KERN_WARNING "via: Unknown VIA SouthBridge, disabling.\n");
return -ENODEV;
}
pci_dev_put(isa);
/* 0x40 low bits indicate enabled channels */
pci_read_config_byte(pdev, 0x40 , &enable);
enable &= 3;
if (enable == 0) {
return -ENODEV;
}
/* Initialise the FIFO for the enabled channels. */
via_config_fifo(pdev, config->flags);
/* Clock set up */
switch(config->flags & VIA_UDMA) {
case VIA_UDMA_NONE:
if (config->flags & VIA_NO_UNMASK)
type = via_mwdma_info_borked;
else
type = via_mwdma_info;
break;
case VIA_UDMA_33:
type = via_udma33_info;
break;
case VIA_UDMA_66:
type = via_udma66_info;
/* The 66 MHz devices require we enable the clock */
pci_read_config_dword(pdev, 0x50, &timing);
timing |= 0x80008;
pci_write_config_dword(pdev, 0x50, timing);
break;
case VIA_UDMA_100:
type = via_udma100_info;
break;
case VIA_UDMA_133:
type = via_udma133_info;
break;
default:
WARN_ON(1);
return -ENODEV;
}
if (config->flags & VIA_BAD_CLK66) {
/* Disable the 66MHz clock on problem devices */
pci_read_config_dword(pdev, 0x50, &timing);
timing &= ~0x80008;
pci_write_config_dword(pdev, 0x50, timing);
}
/* We have established the device type, now fire it up */
type.private_data = (void *)config;
return ata_pci_init_one(pdev, ppi);
}
#ifdef CONFIG_PM
/**
* 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)
{
u32 timing;
struct ata_host *host = dev_get_drvdata(&pdev->dev);
const struct via_isa_bridge *config = host->private_data;
via_config_fifo(pdev, config->flags);
if ((config->flags & VIA_UDMA) == VIA_UDMA_66) {
/* The 66 MHz devices require we enable the clock */
pci_read_config_dword(pdev, 0x50, &timing);
timing |= 0x80008;
pci_write_config_dword(pdev, 0x50, timing);
}
if (config->flags & VIA_BAD_CLK66) {
/* Disable the 66MHz clock on problem devices */
pci_read_config_dword(pdev, 0x50, &timing);
timing &= ~0x80008;
pci_write_config_dword(pdev, 0x50, timing);
}
return ata_pci_device_resume(pdev);
}
#endif
static const struct pci_device_id via[] = {
{ PCI_VDEVICE(VIA, 0x0571), },
{ PCI_VDEVICE(VIA, 0x0581), },
{ PCI_VDEVICE(VIA, 0x1571), },
{ PCI_VDEVICE(VIA, 0x3164), },
{ PCI_VDEVICE(VIA, 0x5324), },
{ },
};
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
.suspend = ata_pci_device_suspend,
.resume = via_reinit_one,
#endif
};
static int __init via_init(void)
{
return pci_register_driver(&via_pci_driver);
}
static void __exit via_exit(void)
{
pci_unregister_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);
module_init(via_init);
module_exit(via_exit);
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