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authorGwendal Grignou <gwendal@google.com>2010-05-25 12:31:38 -0700
committerJeff Garzik <jgarzik@redhat.com>2010-10-21 20:21:03 -0400
commitd9027470b88631d0956ac37cdadfdeb9cdcf2c99 (patch)
treeb15273e88431ba734a24965dfc81132ac13bc8bd /drivers/ata/libata-core.c
parentf6f94e2ab1b33f0082ac22d71f66385a60d8157f (diff)
downloadop-kernel-dev-d9027470b88631d0956ac37cdadfdeb9cdcf2c99.zip
op-kernel-dev-d9027470b88631d0956ac37cdadfdeb9cdcf2c99.tar.gz
[libata] Add ATA transport class
This is a scheleton for libata transport class. All information is read only, exporting information from libata: - ata_port class: one per ATA port - ata_link class: one per ATA port or 15 for SATA Port Multiplier - ata_device class: up to 2 for PATA link, usually one for SATA. Signed-off-by: Gwendal Grignou <gwendal@google.com> Reviewed-by: Grant Grundler <grundler@google.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c49
1 files changed, 43 insertions, 6 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 932eaee..4012b33 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -68,7 +68,7 @@
#include <linux/ratelimit.h>
#include "libata.h"
-
+#include "libata-transport.h"
/* debounce timing parameters in msecs { interval, duration, timeout } */
const unsigned long sata_deb_timing_normal[] = { 5, 100, 2000 };
@@ -1017,7 +1017,7 @@ const char *ata_mode_string(unsigned long xfer_mask)
return "<n/a>";
}
-static const char *sata_spd_string(unsigned int spd)
+const char *sata_spd_string(unsigned int spd)
{
static const char * const spd_str[] = {
"1.5 Gbps",
@@ -5517,7 +5517,8 @@ void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp)
int i;
/* clear everything except for devices */
- memset(link, 0, offsetof(struct ata_link, device[0]));
+ memset((void *)link + ATA_LINK_CLEAR_BEGIN, 0,
+ ATA_LINK_CLEAR_END - ATA_LINK_CLEAR_BEGIN);
link->ap = ap;
link->pmp = pmp;
@@ -5591,7 +5592,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
ap = kzalloc(sizeof(*ap), GFP_KERNEL);
if (!ap)
return NULL;
-
+
ap->pflags |= ATA_PFLAG_INITIALIZING;
ap->lock = &host->lock;
ap->print_id = -1;
@@ -6093,9 +6094,18 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
for (i = 0; i < host->n_ports; i++)
host->ports[i]->print_id = ata_print_id++;
+
+ /* Create associated sysfs transport objects */
+ for (i = 0; i < host->n_ports; i++) {
+ rc = ata_tport_add(host->dev,host->ports[i]);
+ if (rc) {
+ goto err_tadd;
+ }
+ }
+
rc = ata_scsi_add_hosts(host, sht);
if (rc)
- return rc;
+ goto err_tadd;
/* associate with ACPI nodes */
ata_acpi_associate(host);
@@ -6136,6 +6146,13 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
}
return 0;
+
+ err_tadd:
+ while (--i >= 0) {
+ ata_tport_delete(host->ports[i]);
+ }
+ return rc;
+
}
/**
@@ -6226,6 +6243,13 @@ static void ata_port_detach(struct ata_port *ap)
cancel_rearming_delayed_work(&ap->hotplug_task);
skip_eh:
+ if (ap->pmp_link) {
+ int i;
+ for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
+ ata_tlink_delete(&ap->pmp_link[i]);
+ }
+ ata_tport_delete(ap);
+
/* remove the associated SCSI host */
scsi_remove_host(ap->scsi_host);
}
@@ -6542,7 +6566,7 @@ static void __init ata_parse_force_param(void)
static int __init ata_init(void)
{
- int rc = -ENOMEM;
+ int rc;
ata_parse_force_param();
@@ -6552,12 +6576,25 @@ static int __init ata_init(void)
return rc;
}
+ libata_transport_init();
+ ata_scsi_transport_template = ata_attach_transport();
+ if (!ata_scsi_transport_template) {
+ ata_sff_exit();
+ rc = -ENOMEM;
+ goto err_out;
+ }
+
printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
return 0;
+
+err_out:
+ return rc;
}
static void __exit ata_exit(void)
{
+ ata_release_transport(ata_scsi_transport_template);
+ libata_transport_exit();
ata_sff_exit();
kfree(ata_force_tbl);
}
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