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-rw-r--r--drivers/staging/unisys/visorbus/Kconfig7
-rw-r--r--drivers/staging/unisys/visorbus/controlvmcompletionstatus.h24
-rw-r--r--drivers/staging/unisys/visorbus/periodic_work.c11
-rw-r--r--drivers/staging/unisys/visorbus/vbuschannel.h9
-rw-r--r--drivers/staging/unisys/visorbus/visorbus_main.c15
-rw-r--r--drivers/staging/unisys/visorbus/visorchannel.c4
-rw-r--r--drivers/staging/unisys/visorbus/vmcallinterface.h34
7 files changed, 60 insertions, 44 deletions
diff --git a/drivers/staging/unisys/visorbus/Kconfig b/drivers/staging/unisys/visorbus/Kconfig
index 9b299ac86015..511388075ffa 100644
--- a/drivers/staging/unisys/visorbus/Kconfig
+++ b/drivers/staging/unisys/visorbus/Kconfig
@@ -6,4 +6,9 @@ config UNISYS_VISORBUS
tristate "Unisys visorbus driver"
depends on UNISYSSPAR
---help---
- If you say Y here, you will enable the Unisys visorbus driver.
+ The visorbus driver is a virtualized bus for the Unisys s-Par firmware.
+ Virtualized devices allow Linux guests on a system to share disks and
+ network cards that do not have SR-IOV support, and to be accessed using
+ the partition desktop application. The visorbus driver is required to
+ discover devices on an s-Par guest, and must be present for any other
+ s-Par guest driver to function correctly.
diff --git a/drivers/staging/unisys/visorbus/controlvmcompletionstatus.h b/drivers/staging/unisys/visorbus/controlvmcompletionstatus.h
index 3c97ebac4f32..23ad0ea6c9fc 100644
--- a/drivers/staging/unisys/visorbus/controlvmcompletionstatus.h
+++ b/drivers/staging/unisys/visorbus/controlvmcompletionstatus.h
@@ -39,7 +39,8 @@
#define CONTROLVM_RESP_ERROR_MAX_DEVICES 202 /* DEVICE_CREATE */
/* Payload and Parameter Related------------------------------------[400-499] */
#define CONTROLVM_RESP_ERROR_PAYLOAD_INVALID 400 /* SWITCH_ATTACHEXTPORT,
- * DEVICE_CONFIGURE */
+ * DEVICE_CONFIGURE
+ */
#define CONTROLVM_RESP_ERROR_INITIATOR_PARAMETER_INVALID 401 /* Multiple */
#define CONTROLVM_RESP_ERROR_TARGET_PARAMETER_INVALID 402 /* DEVICE_CONFIGURE */
#define CONTROLVM_RESP_ERROR_CLIENT_PARAMETER_INVALID 403 /* DEVICE_CONFIGURE */
@@ -48,36 +49,43 @@
* BUS_CONFIGURE,
* DEVICE_CREATE,
* DEVICE_CONFIG
- * DEVICE_DESTROY */
+ * DEVICE_DESTROY
+ */
#define CONTROLVM_RESP_ERROR_DEVICE_INVALID 501 /* SWITCH_ATTACHINTPORT */
/* DEVICE_CREATE,
* DEVICE_CONFIGURE,
- * DEVICE_DESTROY */
+ * DEVICE_DESTROY
+ */
#define CONTROLVM_RESP_ERROR_CHANNEL_INVALID 502 /* DEVICE_CREATE,
- * DEVICE_CONFIGURE */
+ * DEVICE_CONFIGURE
+ */
/* Partition Driver Callback Interface----------------------[600-699] */
#define CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE 604 /* BUS_CREATE,
* BUS_DESTROY,
* DEVICE_CREATE,
- * DEVICE_DESTROY */
+ * DEVICE_DESTROY
+ */
/* Unable to invoke VIRTPCI callback */
#define CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR 605
/* BUS_CREATE,
* BUS_DESTROY,
* DEVICE_CREATE,
- * DEVICE_DESTROY */
+ * DEVICE_DESTROY
+ */
/* VIRTPCI Callback returned error */
#define CONTROLVM_RESP_ERROR_GENERIC_DRIVER_CALLBACK_ERROR 606
/* SWITCH_ATTACHEXTPORT,
* SWITCH_DETACHEXTPORT
- * DEVICE_CONFIGURE */
+ * DEVICE_CONFIGURE
+ */
/* generic device callback returned error */
/* Bus Related------------------------------------------------------[700-799] */
#define CONTROLVM_RESP_ERROR_BUS_DEVICE_ATTACHED 700 /* BUS_DESTROY */
/* Channel Related--------------------------------------------------[800-899] */
#define CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN 800 /* GET_CHANNELINFO,
- * DEVICE_DESTROY */
+ * DEVICE_DESTROY
+ */
#define CONTROLVM_RESP_ERROR_CHANNEL_SIZE_TOO_SMALL 801 /* DEVICE_CREATE */
/* Chipset Shutdown Related---------------------------------------[1000-1099] */
#define CONTROLVM_RESP_ERROR_CHIPSET_SHUTDOWN_FAILED 1000
diff --git a/drivers/staging/unisys/visorbus/periodic_work.c b/drivers/staging/unisys/visorbus/periodic_work.c
index 115b7aa9560a..00b152764f84 100644
--- a/drivers/staging/unisys/visorbus/periodic_work.c
+++ b/drivers/staging/unisys/visorbus/periodic_work.c
@@ -43,11 +43,12 @@ static void periodic_work_func(struct work_struct *work)
(*pw->workfunc)(pw->workfuncarg);
}
-struct periodic_work *visor_periodic_work_create(ulong jiffy_interval,
- struct workqueue_struct *workqueue,
- void (*workfunc)(void *),
- void *workfuncarg,
- const char *devnam)
+struct periodic_work
+*visor_periodic_work_create(ulong jiffy_interval,
+ struct workqueue_struct *workqueue,
+ void (*workfunc)(void *),
+ void *workfuncarg,
+ const char *devnam)
{
struct periodic_work *pw;
diff --git a/drivers/staging/unisys/visorbus/vbuschannel.h b/drivers/staging/unisys/visorbus/vbuschannel.h
index 80e64477e547..90fa12e62f26 100644
--- a/drivers/staging/unisys/visorbus/vbuschannel.h
+++ b/drivers/staging/unisys/visorbus/vbuschannel.h
@@ -36,10 +36,11 @@ static const uuid_le spar_vbus_channel_protocol_uuid =
#define SPAR_VBUS_CHANNEL_PROTOCOL_SIGNATURE ULTRA_CHANNEL_PROTOCOL_SIGNATURE
/* Must increment this whenever you insert or delete fields within this channel
-* struct. Also increment whenever you change the meaning of fields within this
-* channel struct so as to break pre-existing software. Note that you can
-* usually add fields to the END of the channel struct withOUT needing to
-* increment this. */
+ * struct. Also increment whenever you change the meaning of fields within this
+ * channel struct so as to break pre-existing software. Note that you can
+ * usually add fields to the END of the channel struct withOUT needing to
+ * increment this.
+ */
#define SPAR_VBUS_CHANNEL_PROTOCOL_VERSIONID 1
#define SPAR_VBUS_CHANNEL_OK_CLIENT(ch) \
diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c b/drivers/staging/unisys/visorbus/visorbus_main.c
index a272b48bab28..eac97d22278a 100644
--- a/drivers/staging/unisys/visorbus/visorbus_main.c
+++ b/drivers/staging/unisys/visorbus/visorbus_main.c
@@ -1078,7 +1078,8 @@ away:
}
/* Write the contents of <info> to the struct
- * spar_vbus_channel_protocol.chp_info. */
+ * spar_vbus_channel_protocol.chp_info.
+ */
static int
write_vbus_chp_info(struct visorchannel *chan,
@@ -1096,7 +1097,8 @@ write_vbus_chp_info(struct visorchannel *chan,
}
/* Write the contents of <info> to the struct
- * spar_vbus_channel_protocol.bus_info. */
+ * spar_vbus_channel_protocol.bus_info.
+ */
static int
write_vbus_bus_info(struct visorchannel *chan,
@@ -1370,7 +1372,8 @@ pause_state_change_complete(struct visor_device *dev, int status)
/* Notify the chipset driver that the pause is complete, which
* will presumably want to send some sort of response to the
- * initiator. */
+ * initiator.
+ */
(*chipset_responders.device_pause) (dev, status);
}
@@ -1390,7 +1393,8 @@ resume_state_change_complete(struct visor_device *dev, int status)
/* Notify the chipset driver that the resume is complete,
* which will presumably want to send some sort of response to
- * the initiator. */
+ * the initiator.
+ */
(*chipset_responders.device_resume) (dev, status);
}
@@ -1437,7 +1441,8 @@ initiate_chipset_device_pause_resume(struct visor_device *dev, bool is_pause)
* existing problem prevents us from ever getting a bus
* resume... This hack would fail to work should we
* ever have a bus that contains NO devices, since we
- * would never even get here in that case. */
+ * would never even get here in that case.
+ */
fix_vbus_dev_info(dev);
if (!drv->resume)
goto away;
diff --git a/drivers/staging/unisys/visorbus/visorchannel.c b/drivers/staging/unisys/visorbus/visorchannel.c
index a4e117f101cf..891b8db7c5ec 100644
--- a/drivers/staging/unisys/visorbus/visorchannel.c
+++ b/drivers/staging/unisys/visorbus/visorchannel.c
@@ -41,8 +41,8 @@ struct visorchannel {
struct channel_header chan_hdr;
uuid_le guid;
ulong size;
- bool needs_lock; /* channel creator knows if more than one
- * thread will be inserting or removing */
+ bool needs_lock; /* channel creator knows if more than one */
+ /* thread will be inserting or removing */
spinlock_t insert_lock; /* protect head writes in chan_hdr */
spinlock_t remove_lock; /* protect tail writes in chan_hdr */
diff --git a/drivers/staging/unisys/visorbus/vmcallinterface.h b/drivers/staging/unisys/visorbus/vmcallinterface.h
index c8d8483bd4df..c043fa41ceda 100644
--- a/drivers/staging/unisys/visorbus/vmcallinterface.h
+++ b/drivers/staging/unisys/visorbus/vmcallinterface.h
@@ -43,20 +43,15 @@ enum vmcall_monitor_interface_method_tuple { /* VMCALL identification tuples */
* - the 0x01 identifies it as the 1st instance of a VMCALL_VIRTPART
* type of VMCALL
*/
-
- VMCALL_IO_CONTROLVM_ADDR = 0x0501, /* used by all Guests, not just
- * IO */
- VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET = 0x0708, /* Allow caller to
- * query virtual time
- * offset */
- VMCALL_POST_CODE_LOGEVENT = 0x070B, /* LOGEVENT Post Code (RDX) with
- * specified subsystem mask (RCX
- * - monitor_subsystems.h) and
- * severity (RDX) */
- VMCALL_UPDATE_PHYSICAL_TIME = 0x0a02 /* Allow
- * ULTRA_SERVICE_CAPABILITY_TIME
- * capable guest to make
- * VMCALL */
+ /* used by all Guests, not just IO */
+ VMCALL_IO_CONTROLVM_ADDR = 0x0501,
+ /* Allow caller to query virtual time offset */
+ VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET = 0x0708,
+ /* LOGEVENT Post Code (RDX) with specified subsystem mask */
+ /* (RCX - monitor_subsystems.h) and severity (RDX) */
+ VMCALL_POST_CODE_LOGEVENT = 0x070B,
+ /* Allow ULTRA_SERVICE_CAPABILITY_TIME capable guest to make VMCALL */
+ VMCALL_UPDATE_PHYSICAL_TIME = 0x0a02
};
#define VMCALL_SUCCESS 0
@@ -74,7 +69,8 @@ enum vmcall_monitor_interface_method_tuple { /* VMCALL identification tuples */
unisys_extended_vmcall(method, param1, param2, param3)
/* The following uses VMCALL_POST_CODE_LOGEVENT interface but is currently
- * not used much */
+ * not used much
+ */
#define ISSUE_IO_VMCALL_POSTCODE_SEVERITY(postcode, severity) \
ISSUE_IO_EXTENDED_VMCALL(VMCALL_POST_CODE_LOGEVENT, severity, \
MDS_APPOS, postcode)
@@ -84,11 +80,11 @@ enum vmcall_monitor_interface_method_tuple { /* VMCALL identification tuples */
/* Parameters to VMCALL_IO_CONTROLVM_ADDR interface */
struct vmcall_io_controlvm_addr_params {
- /* The Guest-relative physical address of the ControlVm channel.
- * This VMCall fills this in with the appropriate address. */
+ /* The Guest-relative physical address of the ControlVm channel. */
+ /* This VMCall fills this in with the appropriate address. */
u64 address; /* contents provided by this VMCALL (OUT) */
- /* the size of the ControlVm channel in bytes This VMCall fills this
- * in with the appropriate address. */
+ /* the size of the ControlVm channel in bytes This VMCall fills this */
+ /* in with the appropriate address. */
u32 channel_bytes; /* contents provided by this VMCALL (OUT) */
u8 unused[4]; /* Unused Bytes in the 64-Bit Aligned Struct */
} __packed;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.