323 lines
8.2 KiB
C
323 lines
8.2 KiB
C
/*
|
|
* sata_sis.c - Silicon Integrated Systems SATA
|
|
*
|
|
* Maintained by: Uwe Koziolek
|
|
* Please ALWAYS copy linux-ide@vger.kernel.org
|
|
* on emails.
|
|
*
|
|
* Copyright 2004 Uwe Koziolek
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* 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; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*
|
|
* libata documentation is available via 'make {ps|pdf}docs',
|
|
* as Documentation/DocBook/libata.*
|
|
*
|
|
* Hardware documentation available under NDA.
|
|
*
|
|
*/
|
|
|
|
#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/interrupt.h>
|
|
#include <linux/device.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <linux/libata.h>
|
|
#include "sis.h"
|
|
|
|
#define DRV_NAME "sata_sis"
|
|
#define DRV_VERSION "1.0"
|
|
|
|
enum {
|
|
sis_180 = 0,
|
|
SIS_SCR_PCI_BAR = 5,
|
|
|
|
/* PCI configuration registers */
|
|
SIS_GENCTL = 0x54, /* IDE General Control register */
|
|
SIS_SCR_BASE = 0xc0, /* sata0 phy SCR registers */
|
|
SIS180_SATA1_OFS = 0x10, /* offset from sata0->sata1 phy regs */
|
|
SIS182_SATA1_OFS = 0x20, /* offset from sata0->sata1 phy regs */
|
|
SIS_PMR = 0x90, /* port mapping register */
|
|
SIS_PMR_COMBINED = 0x30,
|
|
|
|
/* random bits */
|
|
SIS_FLAG_CFGSCR = (1 << 30), /* host flag: SCRs via PCI cfg */
|
|
|
|
GENCTL_IOMAPPED_SCR = (1 << 26), /* if set, SCRs are in IO space */
|
|
};
|
|
|
|
static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
|
|
static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
|
|
static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
|
|
|
|
static const struct pci_device_id sis_pci_tbl[] = {
|
|
{ PCI_VDEVICE(SI, 0x0180), sis_180 }, /* SiS 964/180 */
|
|
{ PCI_VDEVICE(SI, 0x0181), sis_180 }, /* SiS 964/180 */
|
|
{ PCI_VDEVICE(SI, 0x0182), sis_180 }, /* SiS 965/965L */
|
|
{ PCI_VDEVICE(SI, 0x0183), sis_180 }, /* SiS 965/965L */
|
|
{ PCI_VDEVICE(SI, 0x1182), sis_180 }, /* SiS 966/680 */
|
|
{ PCI_VDEVICE(SI, 0x1183), sis_180 }, /* SiS 966/966L/968/680 */
|
|
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
static struct pci_driver sis_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = sis_pci_tbl,
|
|
.probe = sis_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
};
|
|
|
|
static struct scsi_host_template sis_sht = {
|
|
ATA_BMDMA_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations sis_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.scr_read = sis_scr_read,
|
|
.scr_write = sis_scr_write,
|
|
};
|
|
|
|
static const struct ata_port_info sis_port_info = {
|
|
.flags = ATA_FLAG_SATA,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &sis_ops,
|
|
};
|
|
|
|
MODULE_AUTHOR("Uwe Koziolek");
|
|
MODULE_DESCRIPTION("low-level driver for Silicon Integratad Systems SATA controller");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
static unsigned int get_scr_cfg_addr(struct ata_link *link, unsigned int sc_reg)
|
|
{
|
|
struct ata_port *ap = link->ap;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
unsigned int addr = SIS_SCR_BASE + (4 * sc_reg);
|
|
u8 pmr;
|
|
|
|
if (ap->port_no) {
|
|
switch (pdev->device) {
|
|
case 0x0180:
|
|
case 0x0181:
|
|
pci_read_config_byte(pdev, SIS_PMR, &pmr);
|
|
if ((pmr & SIS_PMR_COMBINED) == 0)
|
|
addr += SIS180_SATA1_OFS;
|
|
break;
|
|
|
|
case 0x0182:
|
|
case 0x0183:
|
|
case 0x1182:
|
|
addr += SIS182_SATA1_OFS;
|
|
break;
|
|
}
|
|
}
|
|
if (link->pmp)
|
|
addr += 0x10;
|
|
|
|
return addr;
|
|
}
|
|
|
|
static u32 sis_scr_cfg_read(struct ata_link *link,
|
|
unsigned int sc_reg, u32 *val)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
|
|
unsigned int cfg_addr = get_scr_cfg_addr(link, sc_reg);
|
|
|
|
if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
|
|
return -EINVAL;
|
|
|
|
pci_read_config_dword(pdev, cfg_addr, val);
|
|
return 0;
|
|
}
|
|
|
|
static int sis_scr_cfg_write(struct ata_link *link,
|
|
unsigned int sc_reg, u32 val)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
|
|
unsigned int cfg_addr = get_scr_cfg_addr(link, sc_reg);
|
|
|
|
pci_write_config_dword(pdev, cfg_addr, val);
|
|
return 0;
|
|
}
|
|
|
|
static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
|
|
{
|
|
struct ata_port *ap = link->ap;
|
|
void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10;
|
|
|
|
if (sc_reg > SCR_CONTROL)
|
|
return -EINVAL;
|
|
|
|
if (ap->flags & SIS_FLAG_CFGSCR)
|
|
return sis_scr_cfg_read(link, sc_reg, val);
|
|
|
|
*val = ioread32(base + sc_reg * 4);
|
|
return 0;
|
|
}
|
|
|
|
static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
|
|
{
|
|
struct ata_port *ap = link->ap;
|
|
void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10;
|
|
|
|
if (sc_reg > SCR_CONTROL)
|
|
return -EINVAL;
|
|
|
|
if (ap->flags & SIS_FLAG_CFGSCR)
|
|
return sis_scr_cfg_write(link, sc_reg, val);
|
|
|
|
iowrite32(val, base + (sc_reg * 4));
|
|
return 0;
|
|
}
|
|
|
|
static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct ata_port_info pi = sis_port_info;
|
|
const struct ata_port_info *ppi[] = { &pi, &pi };
|
|
struct ata_host *host;
|
|
u32 genctl, val;
|
|
u8 pmr;
|
|
u8 port2_start = 0x20;
|
|
int i, rc;
|
|
|
|
ata_print_version_once(&pdev->dev, DRV_VERSION);
|
|
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* check and see if the SCRs are in IO space or PCI cfg space */
|
|
pci_read_config_dword(pdev, SIS_GENCTL, &genctl);
|
|
if ((genctl & GENCTL_IOMAPPED_SCR) == 0)
|
|
pi.flags |= SIS_FLAG_CFGSCR;
|
|
|
|
/* if hardware thinks SCRs are in IO space, but there are
|
|
* no IO resources assigned, change to PCI cfg space.
|
|
*/
|
|
if ((!(pi.flags & SIS_FLAG_CFGSCR)) &&
|
|
((pci_resource_start(pdev, SIS_SCR_PCI_BAR) == 0) ||
|
|
(pci_resource_len(pdev, SIS_SCR_PCI_BAR) < 128))) {
|
|
genctl &= ~GENCTL_IOMAPPED_SCR;
|
|
pci_write_config_dword(pdev, SIS_GENCTL, genctl);
|
|
pi.flags |= SIS_FLAG_CFGSCR;
|
|
}
|
|
|
|
pci_read_config_byte(pdev, SIS_PMR, &pmr);
|
|
switch (ent->device) {
|
|
case 0x0180:
|
|
case 0x0181:
|
|
|
|
/* The PATA-handling is provided by pata_sis */
|
|
switch (pmr & 0x30) {
|
|
case 0x10:
|
|
ppi[1] = &sis_info133_for_sata;
|
|
break;
|
|
|
|
case 0x30:
|
|
ppi[0] = &sis_info133_for_sata;
|
|
break;
|
|
}
|
|
if ((pmr & SIS_PMR_COMBINED) == 0) {
|
|
dev_info(&pdev->dev,
|
|
"Detected SiS 180/181/964 chipset in SATA mode\n");
|
|
port2_start = 64;
|
|
} else {
|
|
dev_info(&pdev->dev,
|
|
"Detected SiS 180/181 chipset in combined mode\n");
|
|
port2_start = 0;
|
|
pi.flags |= ATA_FLAG_SLAVE_POSS;
|
|
}
|
|
break;
|
|
|
|
case 0x0182:
|
|
case 0x0183:
|
|
pci_read_config_dword(pdev, 0x6C, &val);
|
|
if (val & (1L << 31)) {
|
|
dev_info(&pdev->dev, "Detected SiS 182/965 chipset\n");
|
|
pi.flags |= ATA_FLAG_SLAVE_POSS;
|
|
} else {
|
|
dev_info(&pdev->dev, "Detected SiS 182/965L chipset\n");
|
|
}
|
|
break;
|
|
|
|
case 0x1182:
|
|
dev_info(&pdev->dev,
|
|
"Detected SiS 1182/966/680 SATA controller\n");
|
|
pi.flags |= ATA_FLAG_SLAVE_POSS;
|
|
break;
|
|
|
|
case 0x1183:
|
|
dev_info(&pdev->dev,
|
|
"Detected SiS 1183/966/966L/968/680 controller in PATA mode\n");
|
|
ppi[0] = &sis_info133_for_sata;
|
|
ppi[1] = &sis_info133_for_sata;
|
|
break;
|
|
}
|
|
|
|
rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
|
|
if (rc)
|
|
return rc;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
struct ata_port *ap = host->ports[i];
|
|
|
|
if (ap->flags & ATA_FLAG_SATA &&
|
|
ap->flags & ATA_FLAG_SLAVE_POSS) {
|
|
rc = ata_slave_link_init(ap);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
if (!(pi.flags & SIS_FLAG_CFGSCR)) {
|
|
void __iomem *mmio;
|
|
|
|
rc = pcim_iomap_regions(pdev, 1 << SIS_SCR_PCI_BAR, DRV_NAME);
|
|
if (rc)
|
|
return rc;
|
|
mmio = host->iomap[SIS_SCR_PCI_BAR];
|
|
|
|
host->ports[0]->ioaddr.scr_addr = mmio;
|
|
host->ports[1]->ioaddr.scr_addr = mmio + port2_start;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
pci_intx(pdev, 1);
|
|
return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
|
|
IRQF_SHARED, &sis_sht);
|
|
}
|
|
|
|
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);
|