201ce85946
Some SATA controllers embedded in ATI IXPs seem to have broken SATA_IRQ bit in their bmdma2 registers which is always stuck at 1. This makes the driver believe that there has been a hotplug event and freeze the port whenever there's an interrupt thus failing all commands. This patch disables SATA_IRQ for those controllers. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
700 lines
19 KiB
C
700 lines
19 KiB
C
/*
|
|
* sata_sil.c - Silicon Image SATA
|
|
*
|
|
* Maintained by: Jeff Garzik <jgarzik@pobox.com>
|
|
* Please ALWAYS copy linux-ide@vger.kernel.org
|
|
* on emails.
|
|
*
|
|
* Copyright 2003-2005 Red Hat, Inc.
|
|
* Copyright 2003 Benjamin Herrenschmidt
|
|
*
|
|
*
|
|
* 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.*
|
|
*
|
|
* Documentation for SiI 3112:
|
|
* http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
|
|
*
|
|
* Other errata and 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>
|
|
|
|
#define DRV_NAME "sata_sil"
|
|
#define DRV_VERSION "2.0"
|
|
|
|
enum {
|
|
/*
|
|
* host flags
|
|
*/
|
|
SIL_FLAG_NO_SATA_IRQ = (1 << 28),
|
|
SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
|
|
SIL_FLAG_MOD15WRITE = (1 << 30),
|
|
|
|
SIL_DFL_HOST_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
|
|
ATA_FLAG_MMIO | ATA_FLAG_HRST_TO_RESUME,
|
|
|
|
/*
|
|
* Controller IDs
|
|
*/
|
|
sil_3112 = 0,
|
|
sil_3112_no_sata_irq = 1,
|
|
sil_3512 = 2,
|
|
sil_3114 = 3,
|
|
|
|
/*
|
|
* Register offsets
|
|
*/
|
|
SIL_SYSCFG = 0x48,
|
|
|
|
/*
|
|
* Register bits
|
|
*/
|
|
/* SYSCFG */
|
|
SIL_MASK_IDE0_INT = (1 << 22),
|
|
SIL_MASK_IDE1_INT = (1 << 23),
|
|
SIL_MASK_IDE2_INT = (1 << 24),
|
|
SIL_MASK_IDE3_INT = (1 << 25),
|
|
SIL_MASK_2PORT = SIL_MASK_IDE0_INT | SIL_MASK_IDE1_INT,
|
|
SIL_MASK_4PORT = SIL_MASK_2PORT |
|
|
SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT,
|
|
|
|
/* BMDMA/BMDMA2 */
|
|
SIL_INTR_STEERING = (1 << 1),
|
|
|
|
SIL_DMA_ENABLE = (1 << 0), /* DMA run switch */
|
|
SIL_DMA_RDWR = (1 << 3), /* DMA Rd-Wr */
|
|
SIL_DMA_SATA_IRQ = (1 << 4), /* OR of all SATA IRQs */
|
|
SIL_DMA_ACTIVE = (1 << 16), /* DMA running */
|
|
SIL_DMA_ERROR = (1 << 17), /* PCI bus error */
|
|
SIL_DMA_COMPLETE = (1 << 18), /* cmd complete / IRQ pending */
|
|
SIL_DMA_N_SATA_IRQ = (1 << 6), /* SATA_IRQ for the next channel */
|
|
SIL_DMA_N_ACTIVE = (1 << 24), /* ACTIVE for the next channel */
|
|
SIL_DMA_N_ERROR = (1 << 25), /* ERROR for the next channel */
|
|
SIL_DMA_N_COMPLETE = (1 << 26), /* COMPLETE for the next channel */
|
|
|
|
/* SIEN */
|
|
SIL_SIEN_N = (1 << 16), /* triggered by SError.N */
|
|
|
|
/*
|
|
* Others
|
|
*/
|
|
SIL_QUIRK_MOD15WRITE = (1 << 0),
|
|
SIL_QUIRK_UDMA5MAX = (1 << 1),
|
|
};
|
|
|
|
static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
|
|
static void sil_dev_config(struct ata_port *ap, struct ata_device *dev);
|
|
static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg);
|
|
static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
|
|
static void sil_post_set_mode (struct ata_port *ap);
|
|
static irqreturn_t sil_interrupt(int irq, void *dev_instance,
|
|
struct pt_regs *regs);
|
|
static void sil_freeze(struct ata_port *ap);
|
|
static void sil_thaw(struct ata_port *ap);
|
|
|
|
|
|
static const struct pci_device_id sil_pci_tbl[] = {
|
|
{ 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
|
|
{ 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
|
|
{ 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3512 },
|
|
{ 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
|
|
{ 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
|
|
{ 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_no_sata_irq },
|
|
{ 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_no_sata_irq },
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
|
|
/* TODO firmware versions should be added - eric */
|
|
static const struct sil_drivelist {
|
|
const char * product;
|
|
unsigned int quirk;
|
|
} sil_blacklist [] = {
|
|
{ "ST320012AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST330013AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST340017AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST360015AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST380013AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST380023AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3120023AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3160023AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3120026AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3200822AS", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST340014ASL", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST360014ASL", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST380011ASL", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3120022ASL", SIL_QUIRK_MOD15WRITE },
|
|
{ "ST3160021ASL", SIL_QUIRK_MOD15WRITE },
|
|
{ "Maxtor 4D060H3", SIL_QUIRK_UDMA5MAX },
|
|
{ }
|
|
};
|
|
|
|
static struct pci_driver sil_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = sil_pci_tbl,
|
|
.probe = sil_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
};
|
|
|
|
static struct scsi_host_template sil_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 sil_ops = {
|
|
.port_disable = ata_port_disable,
|
|
.dev_config = sil_dev_config,
|
|
.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,
|
|
.post_set_mode = sil_post_set_mode,
|
|
.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_mmio_data_xfer,
|
|
.freeze = sil_freeze,
|
|
.thaw = sil_thaw,
|
|
.error_handler = ata_bmdma_error_handler,
|
|
.post_internal_cmd = ata_bmdma_post_internal_cmd,
|
|
.irq_handler = sil_interrupt,
|
|
.irq_clear = ata_bmdma_irq_clear,
|
|
.scr_read = sil_scr_read,
|
|
.scr_write = sil_scr_write,
|
|
.port_start = ata_port_start,
|
|
.port_stop = ata_port_stop,
|
|
.host_stop = ata_pci_host_stop,
|
|
};
|
|
|
|
static const struct ata_port_info sil_port_info[] = {
|
|
/* sil_3112 */
|
|
{
|
|
.sht = &sil_sht,
|
|
.host_flags = SIL_DFL_HOST_FLAGS | SIL_FLAG_MOD15WRITE,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07, /* mwdma0-2 */
|
|
.udma_mask = 0x3f, /* udma0-5 */
|
|
.port_ops = &sil_ops,
|
|
},
|
|
/* sil_3112_no_sata_irq */
|
|
{
|
|
.sht = &sil_sht,
|
|
.host_flags = SIL_DFL_HOST_FLAGS | SIL_FLAG_MOD15WRITE |
|
|
SIL_FLAG_NO_SATA_IRQ,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07, /* mwdma0-2 */
|
|
.udma_mask = 0x3f, /* udma0-5 */
|
|
.port_ops = &sil_ops,
|
|
},
|
|
/* sil_3512 */
|
|
{
|
|
.sht = &sil_sht,
|
|
.host_flags = SIL_DFL_HOST_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07, /* mwdma0-2 */
|
|
.udma_mask = 0x3f, /* udma0-5 */
|
|
.port_ops = &sil_ops,
|
|
},
|
|
/* sil_3114 */
|
|
{
|
|
.sht = &sil_sht,
|
|
.host_flags = SIL_DFL_HOST_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07, /* mwdma0-2 */
|
|
.udma_mask = 0x3f, /* udma0-5 */
|
|
.port_ops = &sil_ops,
|
|
},
|
|
};
|
|
|
|
/* per-port register offsets */
|
|
/* TODO: we can probably calculate rather than use a table */
|
|
static const struct {
|
|
unsigned long tf; /* ATA taskfile register block */
|
|
unsigned long ctl; /* ATA control/altstatus register block */
|
|
unsigned long bmdma; /* DMA register block */
|
|
unsigned long bmdma2; /* DMA register block #2 */
|
|
unsigned long fifo_cfg; /* FIFO Valid Byte Count and Control */
|
|
unsigned long scr; /* SATA control register block */
|
|
unsigned long sien; /* SATA Interrupt Enable register */
|
|
unsigned long xfer_mode;/* data transfer mode register */
|
|
unsigned long sfis_cfg; /* SATA FIS reception config register */
|
|
} sil_port[] = {
|
|
/* port 0 ... */
|
|
{ 0x80, 0x8A, 0x00, 0x10, 0x40, 0x100, 0x148, 0xb4, 0x14c },
|
|
{ 0xC0, 0xCA, 0x08, 0x18, 0x44, 0x180, 0x1c8, 0xf4, 0x1cc },
|
|
{ 0x280, 0x28A, 0x200, 0x210, 0x240, 0x300, 0x348, 0x2b4, 0x34c },
|
|
{ 0x2C0, 0x2CA, 0x208, 0x218, 0x244, 0x380, 0x3c8, 0x2f4, 0x3cc },
|
|
/* ... port 3 */
|
|
};
|
|
|
|
MODULE_AUTHOR("Jeff Garzik");
|
|
MODULE_DESCRIPTION("low-level driver for Silicon Image SATA controller");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, sil_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
static int slow_down = 0;
|
|
module_param(slow_down, int, 0444);
|
|
MODULE_PARM_DESC(slow_down, "Sledgehammer used to work around random problems, by limiting commands to 15 sectors (0=off, 1=on)");
|
|
|
|
|
|
static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
|
|
{
|
|
u8 cache_line = 0;
|
|
pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line);
|
|
return cache_line;
|
|
}
|
|
|
|
static void sil_post_set_mode (struct ata_port *ap)
|
|
{
|
|
struct ata_host_set *host_set = ap->host_set;
|
|
struct ata_device *dev;
|
|
void __iomem *addr =
|
|
host_set->mmio_base + sil_port[ap->port_no].xfer_mode;
|
|
u32 tmp, dev_mode[2];
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
dev = &ap->device[i];
|
|
if (!ata_dev_enabled(dev))
|
|
dev_mode[i] = 0; /* PIO0/1/2 */
|
|
else if (dev->flags & ATA_DFLAG_PIO)
|
|
dev_mode[i] = 1; /* PIO3/4 */
|
|
else
|
|
dev_mode[i] = 3; /* UDMA */
|
|
/* value 2 indicates MDMA */
|
|
}
|
|
|
|
tmp = readl(addr);
|
|
tmp &= ~((1<<5) | (1<<4) | (1<<1) | (1<<0));
|
|
tmp |= dev_mode[0];
|
|
tmp |= (dev_mode[1] << 4);
|
|
writel(tmp, addr);
|
|
readl(addr); /* flush */
|
|
}
|
|
|
|
static inline unsigned long sil_scr_addr(struct ata_port *ap, unsigned int sc_reg)
|
|
{
|
|
unsigned long offset = ap->ioaddr.scr_addr;
|
|
|
|
switch (sc_reg) {
|
|
case SCR_STATUS:
|
|
return offset + 4;
|
|
case SCR_ERROR:
|
|
return offset + 8;
|
|
case SCR_CONTROL:
|
|
return offset;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg)
|
|
{
|
|
void __iomem *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
|
|
if (mmio)
|
|
return readl(mmio);
|
|
return 0xffffffffU;
|
|
}
|
|
|
|
static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
|
|
{
|
|
void *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
|
|
if (mmio)
|
|
writel(val, mmio);
|
|
}
|
|
|
|
static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
|
|
{
|
|
struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
|
|
u8 status;
|
|
|
|
if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
|
|
u32 serror;
|
|
|
|
/* SIEN doesn't mask SATA IRQs on some 3112s. Those
|
|
* controllers continue to assert IRQ as long as
|
|
* SError bits are pending. Clear SError immediately.
|
|
*/
|
|
serror = sil_scr_read(ap, SCR_ERROR);
|
|
sil_scr_write(ap, SCR_ERROR, serror);
|
|
|
|
/* Trigger hotplug and accumulate SError only if the
|
|
* port isn't already frozen. Otherwise, PHY events
|
|
* during hardreset makes controllers with broken SIEN
|
|
* repeat probing needlessly.
|
|
*/
|
|
if (!(ap->flags & ATA_FLAG_FROZEN)) {
|
|
ata_ehi_hotplugged(&ap->eh_info);
|
|
ap->eh_info.serror |= serror;
|
|
}
|
|
|
|
goto freeze;
|
|
}
|
|
|
|
if (unlikely(!qc || qc->tf.ctl & ATA_NIEN))
|
|
goto freeze;
|
|
|
|
/* Check whether we are expecting interrupt in this state */
|
|
switch (ap->hsm_task_state) {
|
|
case HSM_ST_FIRST:
|
|
/* Some pre-ATAPI-4 devices assert INTRQ
|
|
* at this state when ready to receive CDB.
|
|
*/
|
|
|
|
/* Check the ATA_DFLAG_CDB_INTR flag is enough here.
|
|
* The flag was turned on only for atapi devices.
|
|
* No need to check is_atapi_taskfile(&qc->tf) again.
|
|
*/
|
|
if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
|
|
goto err_hsm;
|
|
break;
|
|
case HSM_ST_LAST:
|
|
if (qc->tf.protocol == ATA_PROT_DMA ||
|
|
qc->tf.protocol == ATA_PROT_ATAPI_DMA) {
|
|
/* clear DMA-Start bit */
|
|
ap->ops->bmdma_stop(qc);
|
|
|
|
if (bmdma2 & SIL_DMA_ERROR) {
|
|
qc->err_mask |= AC_ERR_HOST_BUS;
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
}
|
|
}
|
|
break;
|
|
case HSM_ST:
|
|
break;
|
|
default:
|
|
goto err_hsm;
|
|
}
|
|
|
|
/* check main status, clearing INTRQ */
|
|
status = ata_chk_status(ap);
|
|
if (unlikely(status & ATA_BUSY))
|
|
goto err_hsm;
|
|
|
|
/* ack bmdma irq events */
|
|
ata_bmdma_irq_clear(ap);
|
|
|
|
/* kick HSM in the ass */
|
|
ata_hsm_move(ap, qc, status, 0);
|
|
|
|
return;
|
|
|
|
err_hsm:
|
|
qc->err_mask |= AC_ERR_HSM;
|
|
freeze:
|
|
ata_port_freeze(ap);
|
|
}
|
|
|
|
static irqreturn_t sil_interrupt(int irq, void *dev_instance,
|
|
struct pt_regs *regs)
|
|
{
|
|
struct ata_host_set *host_set = dev_instance;
|
|
void __iomem *mmio_base = host_set->mmio_base;
|
|
int handled = 0;
|
|
int i;
|
|
|
|
spin_lock(&host_set->lock);
|
|
|
|
for (i = 0; i < host_set->n_ports; i++) {
|
|
struct ata_port *ap = host_set->ports[i];
|
|
u32 bmdma2 = readl(mmio_base + sil_port[ap->port_no].bmdma2);
|
|
|
|
if (unlikely(!ap || ap->flags & ATA_FLAG_DISABLED))
|
|
continue;
|
|
|
|
/* turn off SATA_IRQ if not supported */
|
|
if (ap->flags & SIL_FLAG_NO_SATA_IRQ)
|
|
bmdma2 &= ~SIL_DMA_SATA_IRQ;
|
|
|
|
if (bmdma2 == 0xffffffff ||
|
|
!(bmdma2 & (SIL_DMA_COMPLETE | SIL_DMA_SATA_IRQ)))
|
|
continue;
|
|
|
|
sil_host_intr(ap, bmdma2);
|
|
handled = 1;
|
|
}
|
|
|
|
spin_unlock(&host_set->lock);
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
static void sil_freeze(struct ata_port *ap)
|
|
{
|
|
void __iomem *mmio_base = ap->host_set->mmio_base;
|
|
u32 tmp;
|
|
|
|
/* global IRQ mask doesn't block SATA IRQ, turn off explicitly */
|
|
writel(0, mmio_base + sil_port[ap->port_no].sien);
|
|
|
|
/* plug IRQ */
|
|
tmp = readl(mmio_base + SIL_SYSCFG);
|
|
tmp |= SIL_MASK_IDE0_INT << ap->port_no;
|
|
writel(tmp, mmio_base + SIL_SYSCFG);
|
|
readl(mmio_base + SIL_SYSCFG); /* flush */
|
|
}
|
|
|
|
static void sil_thaw(struct ata_port *ap)
|
|
{
|
|
void __iomem *mmio_base = ap->host_set->mmio_base;
|
|
u32 tmp;
|
|
|
|
/* clear IRQ */
|
|
ata_chk_status(ap);
|
|
ata_bmdma_irq_clear(ap);
|
|
|
|
/* turn on SATA IRQ if supported */
|
|
if (!(ap->flags & SIL_FLAG_NO_SATA_IRQ))
|
|
writel(SIL_SIEN_N, mmio_base + sil_port[ap->port_no].sien);
|
|
|
|
/* turn on IRQ */
|
|
tmp = readl(mmio_base + SIL_SYSCFG);
|
|
tmp &= ~(SIL_MASK_IDE0_INT << ap->port_no);
|
|
writel(tmp, mmio_base + SIL_SYSCFG);
|
|
}
|
|
|
|
/**
|
|
* sil_dev_config - Apply device/host-specific errata fixups
|
|
* @ap: Port containing device to be examined
|
|
* @dev: Device to be examined
|
|
*
|
|
* After the IDENTIFY [PACKET] DEVICE step is complete, and a
|
|
* device is known to be present, this function is called.
|
|
* We apply two errata fixups which are specific to Silicon Image,
|
|
* a Seagate and a Maxtor fixup.
|
|
*
|
|
* For certain Seagate devices, we must limit the maximum sectors
|
|
* to under 8K.
|
|
*
|
|
* For certain Maxtor devices, we must not program the drive
|
|
* beyond udma5.
|
|
*
|
|
* Both fixups are unfairly pessimistic. As soon as I get more
|
|
* information on these errata, I will create a more exhaustive
|
|
* list, and apply the fixups to only the specific
|
|
* devices/hosts/firmwares that need it.
|
|
*
|
|
* 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted
|
|
* The Maxtor quirk is in the blacklist, but I'm keeping the original
|
|
* pessimistic fix for the following reasons...
|
|
* - There seems to be less info on it, only one device gleaned off the
|
|
* Windows driver, maybe only one is affected. More info would be greatly
|
|
* appreciated.
|
|
* - But then again UDMA5 is hardly anything to complain about
|
|
*/
|
|
static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
|
|
{
|
|
unsigned int n, quirks = 0;
|
|
unsigned char model_num[41];
|
|
|
|
ata_id_c_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
|
|
|
|
for (n = 0; sil_blacklist[n].product; n++)
|
|
if (!strcmp(sil_blacklist[n].product, model_num)) {
|
|
quirks = sil_blacklist[n].quirk;
|
|
break;
|
|
}
|
|
|
|
/* limit requests to 15 sectors */
|
|
if (slow_down ||
|
|
((ap->flags & SIL_FLAG_MOD15WRITE) &&
|
|
(quirks & SIL_QUIRK_MOD15WRITE))) {
|
|
ata_dev_printk(dev, KERN_INFO, "applying Seagate errata fix "
|
|
"(mod15write workaround)\n");
|
|
dev->max_sectors = 15;
|
|
return;
|
|
}
|
|
|
|
/* limit to udma5 */
|
|
if (quirks & SIL_QUIRK_UDMA5MAX) {
|
|
ata_dev_printk(dev, KERN_INFO,
|
|
"applying Maxtor errata fix %s\n", model_num);
|
|
dev->udma_mask &= ATA_UDMA5;
|
|
return;
|
|
}
|
|
}
|
|
|
|
static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
static int printed_version;
|
|
struct ata_probe_ent *probe_ent = NULL;
|
|
unsigned long base;
|
|
void __iomem *mmio_base;
|
|
int rc;
|
|
unsigned int i;
|
|
int pci_dev_busy = 0;
|
|
u32 tmp;
|
|
u8 cls;
|
|
|
|
if (!printed_version++)
|
|
dev_printk(KERN_DEBUG, &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;
|
|
|
|
probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
|
|
if (probe_ent == NULL) {
|
|
rc = -ENOMEM;
|
|
goto err_out_regions;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&probe_ent->node);
|
|
probe_ent->dev = pci_dev_to_dev(pdev);
|
|
probe_ent->port_ops = sil_port_info[ent->driver_data].port_ops;
|
|
probe_ent->sht = sil_port_info[ent->driver_data].sht;
|
|
probe_ent->n_ports = (ent->driver_data == sil_3114) ? 4 : 2;
|
|
probe_ent->pio_mask = sil_port_info[ent->driver_data].pio_mask;
|
|
probe_ent->mwdma_mask = sil_port_info[ent->driver_data].mwdma_mask;
|
|
probe_ent->udma_mask = sil_port_info[ent->driver_data].udma_mask;
|
|
probe_ent->irq = pdev->irq;
|
|
probe_ent->irq_flags = SA_SHIRQ;
|
|
probe_ent->host_flags = sil_port_info[ent->driver_data].host_flags;
|
|
|
|
mmio_base = pci_iomap(pdev, 5, 0);
|
|
if (mmio_base == NULL) {
|
|
rc = -ENOMEM;
|
|
goto err_out_free_ent;
|
|
}
|
|
|
|
probe_ent->mmio_base = mmio_base;
|
|
|
|
base = (unsigned long) mmio_base;
|
|
|
|
for (i = 0; i < probe_ent->n_ports; i++) {
|
|
probe_ent->port[i].cmd_addr = base + sil_port[i].tf;
|
|
probe_ent->port[i].altstatus_addr =
|
|
probe_ent->port[i].ctl_addr = base + sil_port[i].ctl;
|
|
probe_ent->port[i].bmdma_addr = base + sil_port[i].bmdma;
|
|
probe_ent->port[i].scr_addr = base + sil_port[i].scr;
|
|
ata_std_ports(&probe_ent->port[i]);
|
|
}
|
|
|
|
/* Initialize FIFO PCI bus arbitration */
|
|
cls = sil_get_device_cache_line(pdev);
|
|
if (cls) {
|
|
cls >>= 3;
|
|
cls++; /* cls = (line_size/8)+1 */
|
|
for (i = 0; i < probe_ent->n_ports; i++)
|
|
writew(cls << 8 | cls,
|
|
mmio_base + sil_port[i].fifo_cfg);
|
|
} else
|
|
dev_printk(KERN_WARNING, &pdev->dev,
|
|
"cache line size not set. Driver may not function\n");
|
|
|
|
/* Apply R_ERR on DMA activate FIS errata workaround */
|
|
if (probe_ent->host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
|
|
int cnt;
|
|
|
|
for (i = 0, cnt = 0; i < probe_ent->n_ports; i++) {
|
|
tmp = readl(mmio_base + sil_port[i].sfis_cfg);
|
|
if ((tmp & 0x3) != 0x01)
|
|
continue;
|
|
if (!cnt)
|
|
dev_printk(KERN_INFO, &pdev->dev,
|
|
"Applying R_ERR on DMA activate "
|
|
"FIS errata fix\n");
|
|
writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
|
|
cnt++;
|
|
}
|
|
}
|
|
|
|
if (ent->driver_data == sil_3114) {
|
|
/* flip the magic "make 4 ports work" bit */
|
|
tmp = readl(mmio_base + sil_port[2].bmdma);
|
|
if ((tmp & SIL_INTR_STEERING) == 0)
|
|
writel(tmp | SIL_INTR_STEERING,
|
|
mmio_base + sil_port[2].bmdma);
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
/* FIXME: check ata_device_add return value */
|
|
ata_device_add(probe_ent);
|
|
kfree(probe_ent);
|
|
|
|
return 0;
|
|
|
|
err_out_free_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 sil_init(void)
|
|
{
|
|
return pci_module_init(&sil_pci_driver);
|
|
}
|
|
|
|
static void __exit sil_exit(void)
|
|
{
|
|
pci_unregister_driver(&sil_pci_driver);
|
|
}
|
|
|
|
|
|
module_init(sil_init);
|
|
module_exit(sil_exit);
|