mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-19 02:04:19 +08:00
9bb9a39ce5
The libata documentation is now using ReST. Update references to it to point to the new place. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
246 lines
6.6 KiB
C
246 lines
6.6 KiB
C
/*
|
|
* sata_uli.c - ULi Electronics SATA
|
|
*
|
|
*
|
|
* 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/driver-api/libata.rst
|
|
*
|
|
* Hardware documentation available under NDA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/pci.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>
|
|
|
|
#define DRV_NAME "sata_uli"
|
|
#define DRV_VERSION "1.3"
|
|
|
|
enum {
|
|
uli_5289 = 0,
|
|
uli_5287 = 1,
|
|
uli_5281 = 2,
|
|
|
|
uli_max_ports = 4,
|
|
|
|
/* PCI configuration registers */
|
|
ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
|
|
ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
|
|
ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
|
|
ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
|
|
};
|
|
|
|
struct uli_priv {
|
|
unsigned int scr_cfg_addr[uli_max_ports];
|
|
};
|
|
|
|
static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
|
|
static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
|
|
static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
|
|
|
|
static const struct pci_device_id uli_pci_tbl[] = {
|
|
{ PCI_VDEVICE(AL, 0x5289), uli_5289 },
|
|
{ PCI_VDEVICE(AL, 0x5287), uli_5287 },
|
|
{ PCI_VDEVICE(AL, 0x5281), uli_5281 },
|
|
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
static struct pci_driver uli_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = uli_pci_tbl,
|
|
.probe = uli_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
};
|
|
|
|
static struct scsi_host_template uli_sht = {
|
|
ATA_BMDMA_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations uli_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.scr_read = uli_scr_read,
|
|
.scr_write = uli_scr_write,
|
|
.hardreset = ATA_OP_NULL,
|
|
};
|
|
|
|
static const struct ata_port_info uli_port_info = {
|
|
.flags = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX,
|
|
.pio_mask = ATA_PIO4,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &uli_ops,
|
|
};
|
|
|
|
|
|
MODULE_AUTHOR("Peer Chen");
|
|
MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
|
|
{
|
|
struct uli_priv *hpriv = ap->host->private_data;
|
|
return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
|
|
}
|
|
|
|
static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
|
|
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
|
|
u32 val;
|
|
|
|
pci_read_config_dword(pdev, cfg_addr, &val);
|
|
return val;
|
|
}
|
|
|
|
static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
|
|
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
|
|
|
|
pci_write_config_dword(pdev, cfg_addr, val);
|
|
}
|
|
|
|
static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
|
|
{
|
|
if (sc_reg > SCR_CONTROL)
|
|
return -EINVAL;
|
|
|
|
*val = uli_scr_cfg_read(link, sc_reg);
|
|
return 0;
|
|
}
|
|
|
|
static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
|
|
{
|
|
if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
|
|
return -EINVAL;
|
|
|
|
uli_scr_cfg_write(link, sc_reg, val);
|
|
return 0;
|
|
}
|
|
|
|
static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
|
|
unsigned int board_idx = (unsigned int) ent->driver_data;
|
|
struct ata_host *host;
|
|
struct uli_priv *hpriv;
|
|
void __iomem * const *iomap;
|
|
struct ata_ioports *ioaddr;
|
|
int n_ports, rc;
|
|
|
|
ata_print_version_once(&pdev->dev, DRV_VERSION);
|
|
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
n_ports = 2;
|
|
if (board_idx == uli_5287)
|
|
n_ports = 4;
|
|
|
|
/* allocate the host */
|
|
host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
|
|
if (!host)
|
|
return -ENOMEM;
|
|
|
|
hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
|
|
if (!hpriv)
|
|
return -ENOMEM;
|
|
host->private_data = hpriv;
|
|
|
|
/* the first two ports are standard SFF */
|
|
rc = ata_pci_sff_init_host(host);
|
|
if (rc)
|
|
return rc;
|
|
|
|
ata_pci_bmdma_init(host);
|
|
|
|
iomap = host->iomap;
|
|
|
|
switch (board_idx) {
|
|
case uli_5287:
|
|
/* If there are four, the last two live right after
|
|
* the standard SFF ports.
|
|
*/
|
|
hpriv->scr_cfg_addr[0] = ULI5287_BASE;
|
|
hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
|
|
|
|
ioaddr = &host->ports[2]->ioaddr;
|
|
ioaddr->cmd_addr = iomap[0] + 8;
|
|
ioaddr->altstatus_addr =
|
|
ioaddr->ctl_addr = (void __iomem *)
|
|
((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
|
|
ioaddr->bmdma_addr = iomap[4] + 16;
|
|
hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
|
|
ata_sff_std_ports(ioaddr);
|
|
|
|
ata_port_desc(host->ports[2],
|
|
"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
|
|
(unsigned long long)pci_resource_start(pdev, 0) + 8,
|
|
((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
|
|
(unsigned long long)pci_resource_start(pdev, 4) + 16);
|
|
|
|
ioaddr = &host->ports[3]->ioaddr;
|
|
ioaddr->cmd_addr = iomap[2] + 8;
|
|
ioaddr->altstatus_addr =
|
|
ioaddr->ctl_addr = (void __iomem *)
|
|
((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
|
|
ioaddr->bmdma_addr = iomap[4] + 24;
|
|
hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
|
|
ata_sff_std_ports(ioaddr);
|
|
|
|
ata_port_desc(host->ports[2],
|
|
"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
|
|
(unsigned long long)pci_resource_start(pdev, 2) + 9,
|
|
((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
|
|
(unsigned long long)pci_resource_start(pdev, 4) + 24);
|
|
|
|
break;
|
|
|
|
case uli_5289:
|
|
hpriv->scr_cfg_addr[0] = ULI5287_BASE;
|
|
hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
|
|
break;
|
|
|
|
case uli_5281:
|
|
hpriv->scr_cfg_addr[0] = ULI5281_BASE;
|
|
hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
pci_intx(pdev, 1);
|
|
return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
|
|
IRQF_SHARED, &uli_sht);
|
|
}
|
|
|
|
module_pci_driver(uli_pci_driver);
|