/* ------------------------------------------------------------
* Routines for driver initialization
*/
int ibmvscsi_init_crq_queue(struct crq_queue *queue,
struct ibmvscsi_host_data *hostdata,
int max_requests)
{
int rc;
single_host_data = hostdata;
rc = viopath_open(viopath_hostLp, viomajorsubtype_scsi, max_requests);
if (rc < 0) {
printk("viopath_open failed with rc %d in open_event_path\n",
rc);
goto viopath_open_failed;
}
rc = vio_setHandler(viomajorsubtype_scsi, ibmvscsi_handle_event);
if (rc < 0) {
printk("vio_setHandler failed with rc %d in open_event_path\n",
rc);
goto vio_setHandler_failed;
}
return 0;
vio_setHandler_failed:
viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests);
viopath_open_failed:
return -1;
}
/*
* Send a monitor message. This is a message with the acknowledge
* bit on that the other side will NOT explicitly acknowledge. When
* the other side goes down, the hypervisor will acknowledge any
* outstanding messages....so we will know when the other side dies.
*/
static void sendMonMsg(HvLpIndex remoteLp)
{
HvLpEvent_Rc hvrc;
viopathStatus[remoteLp].mSourceInst =
HvCallEvent_getSourceLpInstanceId(remoteLp,
HvLpEvent_Type_VirtualIo);
viopathStatus[remoteLp].mTargetInst =
HvCallEvent_getTargetLpInstanceId(remoteLp,
HvLpEvent_Type_VirtualIo);
/*
* Deliberately ignore the return code here. if we call this
* more than once, we don't care.
*/
vio_setHandler(viomajorsubtype_monitor, handleMonitorEvent);
hvrc = HvCallEvent_signalLpEventFast(remoteLp, HvLpEvent_Type_VirtualIo,
viomajorsubtype_monitor, HvLpEvent_AckInd_DoAck,
HvLpEvent_AckType_DeferredAck,
viopathStatus[remoteLp].mSourceInst,
viopathStatus[remoteLp].mTargetInst,
viomonseq++, 0, 0, 0, 0, 0);
if (hvrc == HvLpEvent_Rc_Good)
viopathStatus[remoteLp].isActive = 1;
else {
printk(VIOPATH_KERN_WARN "could not connect to partition %d\n",
remoteLp);
viopathStatus[remoteLp].isActive = 0;
}
}
static void __init get_viotape_info(struct device_node *vio_root)
{
HvLpEvent_Rc hvrc;
u32 unit;
struct vio_resource *unitinfo;
dma_addr_t unitinfo_dmaaddr;
size_t len = sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALTAPES;
struct vio_waitevent we;
int ret;
init_completion(&we.com);
ret = viopath_open(viopath_hostLp, viomajorsubtype_tape, 2);
if (ret) {
printk(KERN_WARNING "get_viotape_info: "
"error on viopath_open to hostlp %d\n", ret);
return;
}
vio_setHandler(viomajorsubtype_tape, handle_tape_event);
unitinfo = iseries_hv_alloc(len, &unitinfo_dmaaddr, GFP_ATOMIC);
if (!unitinfo)
goto clear_handler;
memset(unitinfo, 0, len);
hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
HvLpEvent_Type_VirtualIo,
viomajorsubtype_tape | viotapegetinfo,
HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
viopath_sourceinst(viopath_hostLp),
viopath_targetinst(viopath_hostLp),
(u64)(unsigned long)&we, VIOVERSION << 16,
unitinfo_dmaaddr, len, 0, 0);
if (hvrc != HvLpEvent_Rc_Good) {
printk(KERN_WARNING "get_viotape_info: hv error on op %d\n",
(int)hvrc);
goto hv_free;
}
wait_for_completion(&we.com);
for (unit = 0; (unit < HVMAXARCHITECTEDVIRTUALTAPES) &&
unitinfo[unit].rsrcname[0]; unit++) {
if (!do_device_node(vio_root, "viotape", FIRST_VIOTAPE + unit,
unit, "byte", "IBM,iSeries-viotape",
&unitinfo[unit]))
break;
}
hv_free:
iseries_hv_free(len, unitinfo, unitinfo_dmaaddr);
clear_handler:
vio_clearHandler(viomajorsubtype_tape);
viopath_close(viopath_hostLp, viomajorsubtype_tape, 2);
}
static void __init get_viodasd_info(struct device_node *vio_root)
{
int rc;
u32 unit;
rc = viopath_open(viopath_hostLp, viomajorsubtype_blockio, 2);
if (rc) {
printk(KERN_WARNING "get_viodasd_info: "
"error opening path to host partition %d\n",
viopath_hostLp);
return;
}
/* Initialize our request handler */
vio_setHandler(viomajorsubtype_blockio, handle_block_event);
for (unit = 0; unit < HVMAXARCHITECTEDVIRTUALDISKS; unit++)
probe_disk(vio_root, unit);
vio_clearHandler(viomajorsubtype_blockio);
viopath_close(viopath_hostLp, viomajorsubtype_blockio, 2);
}
static void __init get_viocd_info(struct device_node *vio_root)
{
HvLpEvent_Rc hvrc;
u32 unit;
struct vio_waitevent we;
struct vio_resource *unitinfo;
dma_addr_t unitinfo_dmaaddr;
int ret;
ret = viopath_open(viopath_hostLp, viomajorsubtype_cdio, 2);
if (ret) {
printk(KERN_WARNING
"get_viocd_info: error opening path to host partition %d\n",
viopath_hostLp);
return;
}
/* Initialize our request handler */
vio_setHandler(viomajorsubtype_cdio, handle_cd_event);
unitinfo = iseries_hv_alloc(
sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS,
&unitinfo_dmaaddr, GFP_ATOMIC);
if (!unitinfo) {
printk(KERN_WARNING
"get_viocd_info: error allocating unitinfo\n");
goto clear_handler;
}
memset(unitinfo, 0, sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS);
init_completion(&we.com);
hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
HvLpEvent_Type_VirtualIo,
viomajorsubtype_cdio | viocdgetinfo,
HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
viopath_sourceinst(viopath_hostLp),
viopath_targetinst(viopath_hostLp),
(u64)&we, VIOVERSION << 16, unitinfo_dmaaddr, 0,
sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS, 0);
if (hvrc != HvLpEvent_Rc_Good) {
printk(KERN_WARNING
"get_viocd_info: cdrom error sending event. rc %d\n",
(int)hvrc);
goto hv_free;
}
wait_for_completion(&we.com);
if (we.rc) {
printk(KERN_WARNING "get_viocd_info: bad rc %d:0x%04X\n",
we.rc, we.sub_result);
goto hv_free;
}
for (unit = 0; (unit < HVMAXARCHITECTEDVIRTUALCDROMS) &&
unitinfo[unit].rsrcname[0]; unit++) {
if (!do_device_node(vio_root, "viocd", FIRST_VIOCD + unit, unit,
"block", "IBM,iSeries-viocd", &unitinfo[unit]))
break;
}
hv_free:
iseries_hv_free(sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS,
unitinfo, unitinfo_dmaaddr);
clear_handler:
vio_clearHandler(viomajorsubtype_cdio);
viopath_close(viopath_hostLp, viomajorsubtype_cdio, 2);
}
static int __init viocons_init2(void)
{
atomic_t wait_flag;
int rc;
/* +2 for fudge */
rc = viopath_open(HvLpConfig_getPrimaryLpIndex(),
viomajorsubtype_chario, VIOCHAR_WINDOW + 2);
if (rc)
printk(VIOCONS_KERN_WARN "error opening to primary %d\n", rc);
if (viopath_hostLp == HvLpIndexInvalid)
vio_set_hostlp();
/*
* And if the primary is not the same as the hosting LP, open to the
* hosting lp
*/
if ((viopath_hostLp != HvLpIndexInvalid) &&
(viopath_hostLp != HvLpConfig_getPrimaryLpIndex())) {
printk(VIOCONS_KERN_INFO "open path to hosting (%d)\n",
viopath_hostLp);
rc = viopath_open(viopath_hostLp, viomajorsubtype_chario,
VIOCHAR_WINDOW + 2); /* +2 for fudge */
if (rc)
printk(VIOCONS_KERN_WARN
"error opening to partition %d: %d\n",
viopath_hostLp, rc);
}
if (vio_setHandler(viomajorsubtype_chario, vioHandleCharEvent) < 0)
printk(VIOCONS_KERN_WARN
"error seting handler for console events!\n");
/*
* First, try to open the console to the hosting lp.
* Wait on a semaphore for the response.
*/
atomic_set(&wait_flag, 0);
if ((viopath_isactive(viopath_hostLp)) &&
(send_open(viopath_hostLp, (void *)&wait_flag) == 0)) {
printk(VIOCONS_KERN_INFO "hosting partition %d\n",
viopath_hostLp);
while (atomic_read(&wait_flag) == 0)
mb();
atomic_set(&wait_flag, 0);
}
/*
* If we don't have an active console, try the primary
*/
if ((!viopath_isactive(port_info[0].lp)) &&
(viopath_isactive(HvLpConfig_getPrimaryLpIndex())) &&
(send_open(HvLpConfig_getPrimaryLpIndex(), (void *)&wait_flag)
== 0)) {
printk(VIOCONS_KERN_INFO "opening console to primary partition\n");
while (atomic_read(&wait_flag) == 0)
mb();
}
/* Initialize the tty_driver structure */
viotty_driver = alloc_tty_driver(VTTY_PORTS);
viotty_driver->owner = THIS_MODULE;
viotty_driver->driver_name = "vioconsole";
viotty_driver->devfs_name = "vcs/";
viotty_driver->name = "tty";
viotty_driver->name_base = 1;
viotty_driver->major = TTY_MAJOR;
viotty_driver->minor_start = 1;
viotty_driver->type = TTY_DRIVER_TYPE_CONSOLE;
viotty_driver->subtype = 1;
viotty_driver->init_termios = tty_std_termios;
viotty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
tty_set_operations(viotty_driver, &serial_ops);
if (tty_register_driver(viotty_driver)) {
printk(VIOCONS_KERN_WARN "couldn't register console driver\n");
put_tty_driver(viotty_driver);
viotty_driver = NULL;
}
viocons_init_cfu_buffer();
unregister_console(&viocons_early);
register_console(&viocons);
return 0;
}
