android_kernel_motorola_sm6225/drivers/scsi/sata_uli.c
Tejun Heo d7a80dad2f [PATCH] libata: convert several bmdma-style controllers to new EH, take #3
Convert sata_sis, svw, uli and vsc drivers to new EH.  All the drivers
used to specify ATA_FLAG_SATA_RESET to tell libata to use SATA
hardreset instead of SRST.  This patch makes all the converted drivers
use the standard bmdma error handler which uses both SRST and SATA
hardreset.

All the controllers should be able to perform SRST but still needs
verification.  If some of the controllers can't do SRST, it will be
very easy to spot as it will show up during boot probing.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-20 05:12:15 -04:00

301 lines
7.8 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/DocBook/libata.*
*
* Hardware documentation available under NDA.
*
*/
#include <linux/config.h>
#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>
#define DRV_NAME "sata_uli"
#define DRV_VERSION "0.6"
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 u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
static const struct pci_device_id uli_pci_tbl[] = {
{ PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
{ PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
{ PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 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 = {
.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 const struct ata_port_operations uli_ops = {
.port_disable = ata_port_disable,
.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,
.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,
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
.error_handler = ata_bmdma_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.scr_read = uli_scr_read,
.scr_write = uli_scr_write,
.port_start = ata_port_start,
.port_stop = ata_port_stop,
.host_stop = ata_host_stop,
};
static struct ata_port_info uli_port_info = {
.sht = &uli_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = 0x7f, /* udma0-6 */
.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_set->private_data;
return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
}
static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
u32 val;
pci_read_config_dword(pdev, cfg_addr, &val);
return val;
}
static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
pci_write_config_dword(pdev, cfg_addr, val);
}
static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
if (sc_reg > SCR_CONTROL)
return 0xffffffffU;
return uli_scr_cfg_read(ap, sc_reg);
}
static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
return;
uli_scr_cfg_write(ap, sc_reg, val);
}
static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
struct ata_probe_ent *probe_ent;
struct ata_port_info *ppi;
int rc;
unsigned int board_idx = (unsigned int) ent->driver_data;
int pci_dev_busy = 0;
struct uli_priv *hpriv;
if (!printed_version++)
dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
rc = pci_enable_device(pdev);
if (rc)
return rc;
rc = pci_request_regions(pdev, DRV_NAME);
if (rc) {
pci_dev_busy = 1;
goto err_out;
}
rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
if (rc)
goto err_out_regions;
rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
if (rc)
goto err_out_regions;
ppi = &uli_port_info;
probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
if (!probe_ent) {
rc = -ENOMEM;
goto err_out_regions;
}
hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
if (!hpriv) {
rc = -ENOMEM;
goto err_out_probe_ent;
}
probe_ent->private_data = hpriv;
switch (board_idx) {
case uli_5287:
hpriv->scr_cfg_addr[0] = ULI5287_BASE;
hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
probe_ent->n_ports = 4;
probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
probe_ent->port[2].altstatus_addr =
probe_ent->port[2].ctl_addr =
(pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
probe_ent->port[3].altstatus_addr =
probe_ent->port[3].ctl_addr =
(pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
ata_std_ports(&probe_ent->port[2]);
ata_std_ports(&probe_ent->port[3]);
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);
/* FIXME: check ata_device_add return value */
ata_device_add(probe_ent);
kfree(probe_ent);
return 0;
err_out_probe_ent:
kfree(probe_ent);
err_out_regions:
pci_release_regions(pdev);
err_out:
if (!pci_dev_busy)
pci_disable_device(pdev);
return rc;
}
static int __init uli_init(void)
{
return pci_module_init(&uli_pci_driver);
}
static void __exit uli_exit(void)
{
pci_unregister_driver(&uli_pci_driver);
}
module_init(uli_init);
module_exit(uli_exit);