/*
- sata_via.c - VIA Serial ATA controllers
-
- Maintained by: Jeff Garzik <jgarzik@pobox.com>
- Please ALWAYS copy linux-ide@vger.kernel.org
+ * sata_via.c - VIA Serial ATA controllers
+ *
+ * Maintained by: Jeff Garzik <jgarzik@pobox.com>
+ * Please ALWAYS copy linux-ide@vger.kernel.org
on emails.
-
- Copyright 2003-2004 Red Hat, Inc. All rights reserved.
- Copyright 2003-2004 Jeff Garzik
-
- The contents of this file are subject to the Open
- Software License version 1.1 that can be found at
- http://www.opensource.org/licenses/osl-1.1.txt and is included herein
- by reference.
-
- Alternatively, the contents of this file may be used under the terms
- of the GNU General Public License version 2 (the "GPL") as distributed
- in the kernel source COPYING file, in which case the provisions of
- the GPL are applicable instead of the above. If you wish to allow
- the use of your version of this file only under the terms of the
- GPL and not to allow others to use your version of this file under
- the OSL, indicate your decision by deleting the provisions above and
- replace them with the notice and other provisions required by the GPL.
- If you do not delete the provisions above, a recipient may use your
- version of this file under either the OSL or the GPL.
-
- ----------------------------------------------------------------------
-
- To-do list:
- * VT6421 PATA support
-
+ *
+ * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
+ * Copyright 2003-2004 Jeff Garzik
+ *
+ *
+ * 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.
+ *
+ *
+ * To-do list:
+ * - VT6421 PATA support
+ *
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
-#include "scsi.h"
+#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <asm/io.h>
#define DRV_NAME "sata_via"
-#define DRV_VERSION "1.1"
+#define DRV_VERSION "2.0"
enum board_ids_enum {
vt6420,
static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+static void vt6420_error_handler(struct ata_port *ap);
-static struct pci_device_id svia_pci_tbl[] = {
+static const struct pci_device_id svia_pci_tbl[] = {
+ { 0x1106, 0x0591, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
{ 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
{ 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
.remove = ata_pci_remove_one,
};
-static Scsi_Host_Template svia_sht = {
+static struct scsi_host_template svia_sht = {
.module = THIS_MODULE,
.name = DRV_NAME,
.ioctl = ata_scsi_ioctl,
.queuecommand = ata_scsi_queuecmd,
- .eh_strategy_handler = ata_scsi_error,
.can_queue = ATA_DEF_QUEUE,
.this_id = ATA_SHT_THIS_ID,
.sg_tablesize = LIBATA_MAX_PRD,
- .max_sectors = ATA_MAX_SECTORS,
.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,
- .ordered_flush = 1,
};
-static struct ata_port_operations svia_sata_ops = {
+static const struct ata_port_operations vt6420_sata_ops = {
.port_disable = ata_port_disable,
.tf_load = ata_tf_load,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .phy_reset = sata_phy_reset,
+ .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 = vt6420_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
+
+ .irq_handler = ata_interrupt,
+ .irq_clear = ata_bmdma_irq_clear,
+
+ .port_start = ata_port_start,
+ .port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
+};
+
+static const struct ata_port_operations vt6421_sata_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,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
+ .data_xfer = ata_pio_data_xfer,
- .eng_timeout = ata_eng_timeout,
+ .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,
.host_stop = ata_host_stop,
};
-static struct ata_port_info svia_port_info = {
+static struct ata_port_info vt6420_port_info = {
.sht = &svia_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
+ .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x7f,
- .port_ops = &svia_sata_ops,
+ .port_ops = &vt6420_sata_ops,
};
MODULE_AUTHOR("Jeff Garzik");
outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
}
+/**
+ * vt6420_prereset - prereset for vt6420
+ * @ap: target ATA port
+ *
+ * SCR registers on vt6420 are pieces of shit and may hang the
+ * whole machine completely if accessed with the wrong timing.
+ * To avoid such catastrophe, vt6420 doesn't provide generic SCR
+ * access operations, but uses SStatus and SControl only during
+ * boot probing in controlled way.
+ *
+ * As the old (pre EH update) probing code is proven to work, we
+ * strictly follow the access pattern.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 on success, -errno otherwise.
+ */
+static int vt6420_prereset(struct ata_port *ap)
+{
+ struct ata_eh_context *ehc = &ap->eh_context;
+ unsigned long timeout = jiffies + (HZ * 5);
+ u32 sstatus, scontrol;
+ int online;
+
+ /* don't do any SCR stuff if we're not loading */
+ if (!ATA_PFLAG_LOADING)
+ goto skip_scr;
+
+ /* Resume phy. This is the old resume sequence from
+ * __sata_phy_reset().
+ */
+ svia_scr_write(ap, SCR_CONTROL, 0x300);
+ svia_scr_read(ap, SCR_CONTROL); /* flush */
+
+ /* wait for phy to become ready, if necessary */
+ do {
+ msleep(200);
+ if ((svia_scr_read(ap, SCR_STATUS) & 0xf) != 1)
+ break;
+ } while (time_before(jiffies, timeout));
+
+ /* open code sata_print_link_status() */
+ sstatus = svia_scr_read(ap, SCR_STATUS);
+ scontrol = svia_scr_read(ap, SCR_CONTROL);
+
+ online = (sstatus & 0xf) == 0x3;
+
+ ata_port_printk(ap, KERN_INFO,
+ "SATA link %s 1.5 Gbps (SStatus %X SControl %X)\n",
+ online ? "up" : "down", sstatus, scontrol);
+
+ /* SStatus is read one more time */
+ svia_scr_read(ap, SCR_STATUS);
+
+ if (!online) {
+ /* tell EH to bail */
+ ehc->i.action &= ~ATA_EH_RESET_MASK;
+ return 0;
+ }
+
+ skip_scr:
+ /* wait for !BSY */
+ ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
+
+ return 0;
+}
+
+static void vt6420_error_handler(struct ata_port *ap)
+{
+ return ata_bmdma_drive_eh(ap, vt6420_prereset, ata_std_softreset,
+ NULL, ata_std_postreset);
+}
+
static const unsigned int svia_bar_sizes[] = {
8, 4, 8, 4, 16, 256
};
static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
{
struct ata_probe_ent *probe_ent;
- struct ata_port_info *ppi = &svia_port_info;
+ struct ata_port_info *ppi = &vt6420_port_info;
- probe_ent = ata_pci_init_native_mode(pdev, &ppi);
+ probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
if (!probe_ent)
return NULL;
INIT_LIST_HEAD(&probe_ent->node);
probe_ent->sht = &svia_sht;
- probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
- ATA_FLAG_NO_LEGACY;
- probe_ent->port_ops = &svia_sata_ops;
+ probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY;
+ probe_ent->port_ops = &vt6421_sata_ops;
probe_ent->n_ports = N_PORTS;
probe_ent->irq = pdev->irq;
- probe_ent->irq_flags = SA_SHIRQ;
+ probe_ent->irq_flags = IRQF_SHARED;
probe_ent->pio_mask = 0x1f;
probe_ent->mwdma_mask = 0x07;
probe_ent->udma_mask = 0x7f;
u8 tmp8;
pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
- printk(KERN_INFO DRV_NAME "(%s): routed to hard irq line %d\n",
- pci_name(pdev),
+ dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
(int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
/* make sure SATA channels are enabled */
pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
- printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channels (0x%x)\n",
- pci_name(pdev), (int) tmp8);
+ dev_printk(KERN_DEBUG, &pdev->dev,
+ "enabling SATA channels (0x%x)\n",
+ (int) tmp8);
tmp8 |= ALL_PORTS;
pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
}
/* make sure interrupts for each channel sent to us */
pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
- printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel interrupts (0x%x)\n",
- pci_name(pdev), (int) tmp8);
+ dev_printk(KERN_DEBUG, &pdev->dev,
+ "enabling SATA channel interrupts (0x%x)\n",
+ (int) tmp8);
tmp8 |= ALL_PORTS;
pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
}
/* make sure native mode is enabled */
pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
- printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel native mode (0x%x)\n",
- pci_name(pdev), (int) tmp8);
+ dev_printk(KERN_DEBUG, &pdev->dev,
+ "enabling SATA channel native mode (0x%x)\n",
+ (int) tmp8);
tmp8 |= NATIVE_MODE_ALL;
pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
}
u8 tmp8;
if (!printed_version++)
- printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
+ dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
rc = pci_enable_device(pdev);
if (rc)
if (board_id == vt6420) {
pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
if (tmp8 & SATA_2DEV) {
- printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
- pci_name(pdev), (int) tmp8);
+ dev_printk(KERN_ERR, &pdev->dev,
+ "SATA master/slave not supported (0x%x)\n",
+ (int) tmp8);
rc = -EIO;
goto err_out_regions;
}
for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
if ((pci_resource_start(pdev, i) == 0) ||
(pci_resource_len(pdev, i) < bar_sizes[i])) {
- printk(KERN_ERR DRV_NAME "(%s): invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
- pci_name(pdev), i,
- pci_resource_start(pdev, i),
- pci_resource_len(pdev, i));
+ dev_printk(KERN_ERR, &pdev->dev,
+ "invalid PCI BAR %u (sz 0x%llx, val 0x%llx)\n",
+ i,
+ (unsigned long long)pci_resource_start(pdev, i),
+ (unsigned long long)pci_resource_len(pdev, i));
rc = -ENODEV;
goto err_out_regions;
}
probe_ent = vt6420_init_probe_ent(pdev);
else
probe_ent = vt6421_init_probe_ent(pdev);
-
+
if (!probe_ent) {
- printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
- pci_name(pdev));
+ dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
rc = -ENOMEM;
goto err_out_regions;
}
git://git.onelab.eu / linux-2.6.git / blobdiff