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aha/drivers/ata/pata_sis.c
Tejun Heo 24dc5f33ea libata: update libata LLDs to use devres 
Update libata LLDs to use devres.  Core layer is already converted to
support managed LLDs.  This patch simplifies initialization and fixes
many resource related bugs in init failure and detach path.  For
example, all converted drivers now handle ata_device_add() failure
gracefully without excessive resource rollback code.

As most resources are released automatically on driver detach, many
drivers don't need or can do with much simpler ->{port|host}_stop().
In general, stop callbacks are need iff port or host needs to be given
commands to shut it down.  Note that freezing is enough in many cases
and ports are automatically frozen before being detached.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-09 17:39:37 -05:00

1047 lines
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/*
* pata_sis.c - SiS ATA driver
*
* (C) 2005 Red Hat <alan@redhat.com>
*
* Based upon linux/drivers/ide/pci/sis5513.c
* Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
* Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
* SiS Taiwan : for direct support and hardware.
* Daniela Engert : for initial ATA100 advices and numerous others.
* John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
* for checking code correctness, providing patches.
* Original tests and design on the SiS620 chipset.
* ATA100 tests and design on the SiS735 chipset.
* ATA16/33 support from specs
* ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
*
*
* TODO
* Check MWDMA on drives that don't support MWDMA speed pio cycles ?
* More Testing
*/
#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 <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/ata.h>
#include "libata.h"
#define DRV_NAME "pata_sis"
#define DRV_VERSION "0.4.5"
struct sis_chipset {
u16 device; /* PCI host ID */
struct ata_port_info *info; /* Info block */
/* Probably add family, cable detect type etc here to clean
up code later */
};
struct sis_laptop {
u16 device;
u16 subvendor;
u16 subdevice;
};
static const struct sis_laptop sis_laptop[] = {
/* devid, subvendor, subdev */
{ 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
/* end marker */
{ 0, }
};
static int sis_short_ata40(struct pci_dev *dev)
{
const struct sis_laptop *lap = &sis_laptop[0];
while (lap->device) {
if (lap->device == dev->device &&
lap->subvendor == dev->subsystem_vendor &&
lap->subdevice == dev->subsystem_device)
return 1;
lap++;
}
return 0;
}
/**
* sis_port_base - return PCI configuration base for dev
* @adev: device
*
* Returns the base of the PCI configuration registers for this port
* number.
*/
static int sis_port_base(struct ata_device *adev)
{
return 0x40 + (4 * adev->ap->port_no) + (2 * adev->devno);
}
/**
* sis_133_pre_reset - check for 40/80 pin
* @ap: Port
*
* Perform cable detection for the later UDMA133 capable
* SiS chipset.
*/
static int sis_133_pre_reset(struct ata_port *ap)
{
static const struct pci_bits sis_enable_bits[] = {
{ 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
{ 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u16 tmp;
if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
return -ENOENT;
/* The top bit of this register is the cable detect bit */
pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
if ((tmp & 0x8000) && !sis_short_ata40(pdev))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
return ata_std_prereset(ap);
}
/**
* sis_error_handler - Probe specified port on PATA host controller
* @ap: Port to probe
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_133_error_handler(struct ata_port *ap)
{
ata_bmdma_drive_eh(ap, sis_133_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/**
* sis_66_pre_reset - check for 40/80 pin
* @ap: Port
*
* Perform cable detection on the UDMA66, UDMA100 and early UDMA133
* SiS IDE controllers.
*/
static int sis_66_pre_reset(struct ata_port *ap)
{
static const struct pci_bits sis_enable_bits[] = {
{ 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
{ 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 tmp;
if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) {
ata_port_disable(ap);
printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
return 0;
}
/* Older chips keep cable detect in bits 4/5 of reg 0x48 */
pci_read_config_byte(pdev, 0x48, &tmp);
tmp >>= ap->port_no;
if ((tmp & 0x10) && !sis_short_ata40(pdev))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
return ata_std_prereset(ap);
}
/**
* sis_66_error_handler - Probe specified port on PATA host controller
* @ap: Port to probe
* @classes:
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_66_error_handler(struct ata_port *ap)
{
ata_bmdma_drive_eh(ap, sis_66_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/**
* sis_old_pre_reset - probe begin
* @ap: ATA port
*
* Set up cable type and use generic probe init
*/
static int sis_old_pre_reset(struct ata_port *ap)
{
static const struct pci_bits sis_enable_bits[] = {
{ 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
{ 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) {
ata_port_disable(ap);
printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
return 0;
}
ap->cbl = ATA_CBL_PATA40;
return ata_std_prereset(ap);
}
/**
* sis_old_error_handler - Probe specified port on PATA host controller
* @ap: Port to probe
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_old_error_handler(struct ata_port *ap)
{
ata_bmdma_drive_eh(ap, sis_old_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
/**
* sis_set_fifo - Set RWP fifo bits for this device
* @ap: Port
* @adev: Device
*
* SIS chipsets implement prefetch/postwrite bits for each device
* on both channels. This functionality is not ATAPI compatible and
* must be configured according to the class of device present
*/
static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 fifoctrl;
u8 mask = 0x11;
mask <<= (2 * ap->port_no);
mask <<= adev->devno;
/* This holds various bits including the FIFO control */
pci_read_config_byte(pdev, 0x4B, &fifoctrl);
fifoctrl &= ~mask;
/* Enable for ATA (disk) only */
if (adev->class == ATA_DEV_ATA)
fifoctrl |= mask;
pci_write_config_byte(pdev, 0x4B, fifoctrl);
}
/**
* sis_old_set_piomode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
* @adev: Device we are configuring for.
*
* Set PIO mode for device, in host controller PCI config space. This
* function handles PIO set up for all chips that are pre ATA100 and
* also early ATA100 devices.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int port = sis_port_base(adev);
u8 t1, t2;
int speed = adev->pio_mode - XFER_PIO_0;
const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
sis_set_fifo(ap, adev);
pci_read_config_byte(pdev, port, &t1);
pci_read_config_byte(pdev, port + 1, &t2);
t1 &= ~0x0F; /* Clear active/recovery timings */
t2 &= ~0x07;
t1 |= active[speed];
t2 |= recovery[speed];
pci_write_config_byte(pdev, port, t1);
pci_write_config_byte(pdev, port + 1, t2);
}
/**
* sis_100_set_pioode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
* @adev: Device we are configuring for.
*
* Set PIO mode for device, in host controller PCI config space. This
* function handles PIO set up for ATA100 devices and early ATA133.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int port = sis_port_base(adev);
int speed = adev->pio_mode - XFER_PIO_0;
const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
sis_set_fifo(ap, adev);
pci_write_config_byte(pdev, port, actrec[speed]);
}
/**
* sis_133_set_pioode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
* @adev: Device we are configuring for.
*
* Set PIO mode for device, in host controller PCI config space. This
* function handles PIO set up for the later ATA133 devices.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int port = 0x40;
u32 t1;
u32 reg54;
int speed = adev->pio_mode - XFER_PIO_0;
const u32 timing133[] = {
0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
0x0C266000,
0x04263000,
0x0C0A3000,
0x05093000
};
const u32 timing100[] = {
0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
0x091C4000,
0x031C2000,
0x09072000,
0x04062000
};
sis_set_fifo(ap, adev);
/* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
pci_read_config_dword(pdev, 0x54, &reg54);
if (reg54 & 0x40000000)
port = 0x70;
port += 8 * ap->port_no + 4 * adev->devno;
pci_read_config_dword(pdev, port, &t1);
t1 &= 0xC0C00FFF; /* Mask out timing */
if (t1 & 0x08) /* 100 or 133 ? */
t1 |= timing133[speed];
else
t1 |= timing100[speed];
pci_write_config_byte(pdev, port, t1);
}
/**
* sis_old_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: Device to program
*
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
* Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
* the old ide/pci driver.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int speed = adev->dma_mode - XFER_MW_DMA_0;
int drive_pci = sis_port_base(adev);
u16 timing;
const u16 mwdma_bits[] = { 0x707, 0x202, 0x202 };
const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
pci_read_config_word(pdev, drive_pci, &timing);
if (adev->dma_mode < XFER_UDMA_0) {
/* bits 3-0 hold recovery timing bits 8-10 active timing and
the higer bits are dependant on the device */
timing &= ~ 0x870F;
timing |= mwdma_bits[speed];
pci_write_config_word(pdev, drive_pci, timing);
} else {
/* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
speed = adev->dma_mode - XFER_UDMA_0;
timing &= ~0x6000;
timing |= udma_bits[speed];
}
}
/**
* sis_66_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: Device to program
*
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
* Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
* the old ide/pci driver.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int speed = adev->dma_mode - XFER_MW_DMA_0;
int drive_pci = sis_port_base(adev);
u16 timing;
const u16 mwdma_bits[] = { 0x707, 0x202, 0x202 };
const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000};
pci_read_config_word(pdev, drive_pci, &timing);
if (adev->dma_mode < XFER_UDMA_0) {
/* bits 3-0 hold recovery timing bits 8-10 active timing and
the higer bits are dependant on the device, bit 15 udma */
timing &= ~ 0x870F;
timing |= mwdma_bits[speed];
} else {
/* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
speed = adev->dma_mode - XFER_UDMA_0;
timing &= ~0x6000;
timing |= udma_bits[speed];
}
pci_write_config_word(pdev, drive_pci, timing);
}
/**
* sis_100_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: Device to program
*
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
* Handles UDMA66 and early UDMA100 devices.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int speed = adev->dma_mode - XFER_MW_DMA_0;
int drive_pci = sis_port_base(adev);
u16 timing;
const u16 udma_bits[] = { 0x8B00, 0x8700, 0x8500, 0x8300, 0x8200, 0x8100};
pci_read_config_word(pdev, drive_pci, &timing);
if (adev->dma_mode < XFER_UDMA_0) {
/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
} else {
/* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
speed = adev->dma_mode - XFER_UDMA_0;
timing &= ~0x0F00;
timing |= udma_bits[speed];
}
pci_write_config_word(pdev, drive_pci, timing);
}
/**
* sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: Device to program
*
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
* Handles early SiS 961 bridges. Supports MWDMA as well unlike
* the old ide/pci driver.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int speed = adev->dma_mode - XFER_MW_DMA_0;
int drive_pci = sis_port_base(adev);
u16 timing;
const u16 udma_bits[] = { 0x8F00, 0x8A00, 0x8700, 0x8500, 0x8300, 0x8200, 0x8100};
pci_read_config_word(pdev, drive_pci, &timing);
if (adev->dma_mode < XFER_UDMA_0) {
/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
} else {
/* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
speed = adev->dma_mode - XFER_UDMA_0;
timing &= ~0x0F00;
timing |= udma_bits[speed];
}
pci_write_config_word(pdev, drive_pci, timing);
}
/**
* sis_133_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: Device to program
*
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
* Handles early SiS 961 bridges. Supports MWDMA as well unlike
* the old ide/pci driver.
*
* LOCKING:
* None (inherited from caller).
*/
static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int speed = adev->dma_mode - XFER_MW_DMA_0;
int port = 0x40;
u32 t1;
u32 reg54;
/* bits 4- cycle time 8 - cvs time */
const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
/* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
pci_read_config_dword(pdev, 0x54, &reg54);
if (reg54 & 0x40000000)
port = 0x70;
port += (8 * ap->port_no) + (4 * adev->devno);
pci_read_config_dword(pdev, port, &t1);
if (adev->dma_mode < XFER_UDMA_0) {
t1 &= ~0x00000004;
/* FIXME: need data sheet to add MWDMA here. Also lacking on
ide/pci driver */
} else {
speed = adev->dma_mode - XFER_UDMA_0;
/* if & 8 no UDMA133 - need info for ... */
t1 &= ~0x00000FF0;
t1 |= 0x00000004;
if (t1 & 0x08)
t1 |= timing_u133[speed];
else
t1 |= timing_u100[speed];
}
pci_write_config_dword(pdev, port, t1);
}
static struct scsi_host_template sis_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,
.resume = ata_scsi_device_resume,
.suspend = ata_scsi_device_suspend,
};
static const struct ata_port_operations sis_133_ops = {
.port_disable = ata_port_disable,
.set_piomode = sis_133_set_piomode,
.set_dmamode = sis_133_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 = sis_133_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.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_pio_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
};
static const struct ata_port_operations sis_133_early_ops = {
.port_disable = ata_port_disable,
.set_piomode = sis_100_set_piomode,
.set_dmamode = sis_133_early_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 = sis_66_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.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_pio_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
};
static const struct ata_port_operations sis_100_ops = {
.port_disable = ata_port_disable,
.set_piomode = sis_100_set_piomode,
.set_dmamode = sis_100_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 = sis_66_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.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_pio_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
};
static const struct ata_port_operations sis_66_ops = {
.port_disable = ata_port_disable,
.set_piomode = sis_old_set_piomode,
.set_dmamode = sis_66_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 = sis_66_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.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_pio_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
};
static const struct ata_port_operations sis_old_ops = {
.port_disable = ata_port_disable,
.set_piomode = sis_old_set_piomode,
.set_dmamode = sis_old_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 = sis_old_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.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_pio_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
};
static struct ata_port_info sis_info = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07,
.udma_mask = 0,
.port_ops = &sis_old_ops,
};
static struct ata_port_info sis_info33 = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA2, /* UDMA 33 */
.port_ops = &sis_old_ops,
};
static struct ata_port_info sis_info66 = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA4, /* UDMA 66 */
.port_ops = &sis_66_ops,
};
static struct ata_port_info sis_info100 = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA5,
.port_ops = &sis_100_ops,
};
static struct ata_port_info sis_info100_early = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.udma_mask = ATA_UDMA5,
.pio_mask = 0x1f, /* pio0-4 */
.port_ops = &sis_66_ops,
};
struct ata_port_info sis_info133 = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &sis_133_ops,
};
static struct ata_port_info sis_info133_early = {
.sht = &sis_sht,
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &sis_133_early_ops,
};
/* Privately shared with the SiS180 SATA driver, not for use elsewhere */
EXPORT_SYMBOL_GPL(sis_info133);
static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
{
u16 regw;
u8 reg;
if (sis->info == &sis_info133) {
pci_read_config_word(pdev, 0x50, &regw);
if (regw & 0x08)
pci_write_config_word(pdev, 0x50, regw & ~0x08);
pci_read_config_word(pdev, 0x52, &regw);
if (regw & 0x08)
pci_write_config_word(pdev, 0x52, regw & ~0x08);
return;
}
if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
/* Fix up latency */
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
/* Set compatibility bit */
pci_read_config_byte(pdev, 0x49, &reg);
if (!(reg & 0x01))
pci_write_config_byte(pdev, 0x49, reg | 0x01);
return;
}
if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
/* Fix up latency */
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
/* Set compatibility bit */
pci_read_config_byte(pdev, 0x52, &reg);
if (!(reg & 0x04))
pci_write_config_byte(pdev, 0x52, reg | 0x04);
return;
}
if (sis->info == &sis_info33) {
pci_read_config_byte(pdev, PCI_CLASS_PROG, &reg);
if (( reg & 0x0F ) != 0x00)
pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
/* Fall through to ATA16 fixup below */
}
if (sis->info == &sis_info || sis->info == &sis_info33) {
/* force per drive recovery and active timings
needed on ATA_33 and below chips */
pci_read_config_byte(pdev, 0x52, &reg);
if (!(reg & 0x08))
pci_write_config_byte(pdev, 0x52, reg|0x08);
return;
}
BUG();
}
/**
* sis_init_one - Register SiS ATA PCI device with kernel services
* @pdev: PCI device to register
* @ent: Entry in sis_pci_tbl matching with @pdev
*
* Called from kernel PCI layer. We probe for combined mode (sigh),
* and then hand over control to libata, for it to do the rest.
*
* LOCKING:
* Inherited from PCI layer (may sleep).
*
* RETURNS:
* Zero on success, or -ERRNO value.
*/
static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
static struct ata_port_info *port_info[2];
struct ata_port_info *port;
struct pci_dev *host = NULL;
struct sis_chipset *chipset = NULL;
static struct sis_chipset sis_chipsets[] = {
{ 0x0968, &sis_info133 },
{ 0x0966, &sis_info133 },
{ 0x0965, &sis_info133 },
{ 0x0745, &sis_info100 },
{ 0x0735, &sis_info100 },
{ 0x0733, &sis_info100 },
{ 0x0635, &sis_info100 },
{ 0x0633, &sis_info100 },
{ 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
{ 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
{ 0x0640, &sis_info66 },
{ 0x0630, &sis_info66 },
{ 0x0620, &sis_info66 },
{ 0x0540, &sis_info66 },
{ 0x0530, &sis_info66 },
{ 0x5600, &sis_info33 },
{ 0x5598, &sis_info33 },
{ 0x5597, &sis_info33 },
{ 0x5591, &sis_info33 },
{ 0x5582, &sis_info33 },
{ 0x5581, &sis_info33 },
{ 0x5596, &sis_info },
{ 0x5571, &sis_info },
{ 0x5517, &sis_info },
{ 0x5511, &sis_info },
{0}
};
static struct sis_chipset sis133_early = {
0x0, &sis_info133_early
};
static struct sis_chipset sis133 = {
0x0, &sis_info133
};
static struct sis_chipset sis100_early = {
0x0, &sis_info100_early
};
static struct sis_chipset sis100 = {
0x0, &sis_info100
};
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev,
"version " DRV_VERSION "\n");
/* We have to find the bridge first */
for (chipset = &sis_chipsets[0]; chipset->device; chipset++) {
host = pci_get_device(PCI_VENDOR_ID_SI, chipset->device, NULL);
if (host != NULL) {
if (chipset->device == 0x630) { /* SIS630 */
u8 host_rev;
pci_read_config_byte(host, PCI_REVISION_ID, &host_rev);
if (host_rev >= 0x30) /* 630 ET */
chipset = &sis100_early;
}
break;
}
}
/* Look for concealed bridges */
if (host == NULL) {
/* Second check */
u32 idemisc;
u16 trueid;
/* Disable ID masking and register remapping then
see what the real ID is */
pci_read_config_dword(pdev, 0x54, &idemisc);
pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
pci_write_config_dword(pdev, 0x54, idemisc);
switch(trueid) {
case 0x5518: /* SIS 962/963 */
chipset = &sis133;
if ((idemisc & 0x40000000) == 0) {
pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
}
break;
case 0x0180: /* SIS 965/965L */
chipset = &sis133;
break;
case 0x1180: /* SIS 966/966L */
chipset = &sis133;
break;
}
}
/* Further check */
if (chipset == NULL) {
struct pci_dev *lpc_bridge;
u16 trueid;
u8 prefctl;
u8 idecfg;
u8 sbrev;
/* Try the second unmasking technique */
pci_read_config_byte(pdev, 0x4a, &idecfg);
pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
pci_write_config_byte(pdev, 0x4a, idecfg);
switch(trueid) {
case 0x5517:
lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
if (lpc_bridge == NULL)
break;
pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
pci_read_config_byte(pdev, 0x49, &prefctl);
pci_dev_put(lpc_bridge);
if (sbrev == 0x10 && (prefctl & 0x80)) {
chipset = &sis133_early;
break;
}
chipset = &sis100;
break;
}
}
pci_dev_put(host);
/* No chipset info, no support */
if (chipset == NULL)
return -ENODEV;
port = chipset->info;
port->private_data = chipset;
sis_fixup(pdev, chipset);
port_info[0] = port_info[1] = port;
return ata_pci_init_one(pdev, port_info, 2);
}
static const struct pci_device_id sis_pci_tbl[] = {
{ PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
{ PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
{ }
};
static struct pci_driver sis_pci_driver = {
.name = DRV_NAME,
.id_table = sis_pci_tbl,
.probe = sis_init_one,
.remove = ata_pci_remove_one,
.suspend = ata_pci_device_suspend,
.resume = ata_pci_device_resume,
};
static int __init sis_init(void)
{
return pci_register_driver(&sis_pci_driver);
}
static void __exit sis_exit(void)
{
pci_unregister_driver(&sis_pci_driver);
}
module_init(sis_init);
module_exit(sis_exit);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
MODULE_VERSION(DRV_VERSION);
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