#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/hv_lp_config.h>
#include <asm/iseries/vio.h>
+#include <asm/firmware.h>
MODULE_DESCRIPTION("iSeries Virtual DASD");
MODULE_AUTHOR("Dave Boutcher");
* numbers 0-255 we get a maximum of 32 disks.
*/
#define VIOD_GENHD_NAME "iseries/vd"
-#define VIOD_GENHD_DEVFS_NAME "iseries/disc"
#define VIOD_VERS "1.64"
u16 viocmd;
HvLpEvent_Rc hvrc;
struct vioblocklpevent *bevent;
+ struct HvLpEvent *hev;
struct scatterlist sg[VIOMAXBLOCKDMA];
int sgindex;
int statindex;
* token so we can match the response up later
*/
memset(bevent, 0, sizeof(struct vioblocklpevent));
- bevent->event.xFlags.xValid = 1;
- bevent->event.xFlags.xFunction = HvLpEvent_Function_Int;
- bevent->event.xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
- bevent->event.xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
- bevent->event.xType = HvLpEvent_Type_VirtualIo;
- bevent->event.xSubtype = viocmd;
- bevent->event.xSourceLp = HvLpConfig_getLpIndex();
- bevent->event.xTargetLp = viopath_hostLp;
- bevent->event.xSizeMinus1 =
+ hev = &bevent->event;
+ hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK |
+ HV_LP_EVENT_INT;
+ hev->xType = HvLpEvent_Type_VirtualIo;
+ hev->xSubtype = viocmd;
+ hev->xSourceLp = HvLpConfig_getLpIndex();
+ hev->xTargetLp = viopath_hostLp;
+ hev->xSizeMinus1 =
offsetof(struct vioblocklpevent, u.rw_data.dma_info) +
(sizeof(bevent->u.rw_data.dma_info[0]) * nsg) - 1;
- bevent->event.xSourceInstanceId =
- viopath_sourceinst(viopath_hostLp);
- bevent->event.xTargetInstanceId =
- viopath_targetinst(viopath_hostLp);
- bevent->event.xCorrelationToken = (u64)req;
+ hev->xSourceInstanceId = viopath_sourceinst(viopath_hostLp);
+ hev->xTargetInstanceId = viopath_targetinst(viopath_hostLp);
+ hev->xCorrelationToken = (u64)req;
bevent->version = VIOVERSION;
bevent->disk = DEVICE_NO(d);
bevent->u.rw_data.offset = start;
else
snprintf(g->disk_name, sizeof(g->disk_name),
VIOD_GENHD_NAME "%c", 'a' + (dev_no % 26));
- snprintf(g->devfs_name, sizeof(g->devfs_name),
- "%s%d", VIOD_GENHD_DEVFS_NAME, dev_no);
g->fops = &viodasd_fops;
g->queue = q;
g->private_data = d;
/* Notification that a partition went away! */
return;
/* First, we should NEVER get an int here...only acks */
- if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+ if (hvlpevent_is_int(event)) {
printk(VIOD_KERN_WARNING
"Yikes! got an int in viodasd event handler!\n");
- if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+ if (hvlpevent_need_ack(event)) {
event->xRc = HvLpEvent_Rc_InvalidSubtype;
HvCallEvent_ackLpEvent(event);
}
default:
printk(VIOD_KERN_WARNING "invalid subtype!");
- if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+ if (hvlpevent_need_ack(event)) {
event->xRc = HvLpEvent_Rc_InvalidSubtype;
HvCallEvent_ackLpEvent(event);
}
* support.
*/
static struct vio_device_id viodasd_device_table[] __devinitdata = {
- { "viodasd", "" },
+ { "block", "IBM,iSeries-viodasd" },
{ "", "" }
};
MODULE_DEVICE_TABLE(vio, viodasd_device_table);
}
};
+static int need_delete_probe;
+
/*
* Initialize the whole device driver. Handle module and non-module
* versions
{
int rc;
+ if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
+ rc = -ENODEV;
+ goto early_fail;
+ }
+
/* Try to open to our host lp */
if (viopath_hostLp == HvLpIndexInvalid)
vio_set_hostlp();
if (viopath_hostLp == HvLpIndexInvalid) {
printk(VIOD_KERN_WARNING "invalid hosting partition\n");
- return -EIO;
+ rc = -EIO;
+ goto early_fail;
}
printk(VIOD_KERN_INFO "vers " VIOD_VERS ", hosting partition %d\n",
viopath_hostLp);
/* register the block device */
- if (register_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME)) {
+ rc = register_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME);
+ if (rc) {
printk(VIOD_KERN_WARNING
"Unable to get major number %d for %s\n",
VIODASD_MAJOR, VIOD_GENHD_NAME);
- return -EIO;
+ goto early_fail;
}
/* Actually open the path to the hosting partition */
- if (viopath_open(viopath_hostLp, viomajorsubtype_blockio,
- VIOMAXREQ + 2)) {
+ rc = viopath_open(viopath_hostLp, viomajorsubtype_blockio,
+ VIOMAXREQ + 2);
+ if (rc) {
printk(VIOD_KERN_WARNING
"error opening path to host partition %d\n",
viopath_hostLp);
- unregister_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME);
- return -EIO;
+ goto unregister_blk;
}
/* Initialize our request handler */
vio_setHandler(viomajorsubtype_blockio, handle_block_event);
rc = vio_register_driver(&viodasd_driver);
- if (rc == 0)
- driver_create_file(&viodasd_driver.driver, &driver_attr_probe);
+ if (rc) {
+ printk(VIOD_KERN_WARNING "vio_register_driver failed\n");
+ goto unset_handler;
+ }
+
+ /*
+ * If this call fails, it just means that we cannot dynamically
+ * add virtual disks, but the driver will still work fine for
+ * all existing disk, so ignore the failure.
+ */
+ if (!driver_create_file(&viodasd_driver.driver, &driver_attr_probe))
+ need_delete_probe = 1;
+
+ return 0;
+
+unset_handler:
+ vio_clearHandler(viomajorsubtype_blockio);
+ viopath_close(viopath_hostLp, viomajorsubtype_blockio, VIOMAXREQ + 2);
+unregister_blk:
+ unregister_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME);
+early_fail:
return rc;
}
module_init(viodasd_init);
-void viodasd_exit(void)
+void __exit viodasd_exit(void)
{
- driver_remove_file(&viodasd_driver.driver, &driver_attr_probe);
+ if (need_delete_probe)
+ driver_remove_file(&viodasd_driver.driver, &driver_attr_probe);
vio_unregister_driver(&viodasd_driver);
vio_clearHandler(viomajorsubtype_blockio);
- unregister_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME);
viopath_close(viopath_hostLp, viomajorsubtype_blockio, VIOMAXREQ + 2);
+ unregister_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME);
}
-
module_exit(viodasd_exit);