From: David Kershner <david.kershner@xxxxxxxxxx>
Channel.h is used by all channels, it needs to be in include.
Controlvm Channel is only used by visorbus, it needs to just be there.
Signed-off-by: David Kershner <david.kershner@xxxxxxxxxx>
Signed-off-by: Benjamin Romer <benjamin.romer@xxxxxxxxxx>
---
.../unisys/common-spar/include/channels/channel.h | 590 ---------------------
.../common-spar/include/channels/channel_guid.h | 61 ---
.../include/channels/controlvmchannel.h | 485 -----------------
drivers/staging/unisys/include/channel.h | 555 +++++++++++++++++++
drivers/staging/unisys/include/channel_guid.h | 61 +++
drivers/staging/unisys/visorbus/controlvmchannel.h | 485 +++++++++++++++++
6 files changed, 1101 insertions(+), 1136 deletions(-)
delete mode 100644 drivers/staging/unisys/common-spar/include/channels/channel.h
delete mode 100644 drivers/staging/unisys/common-spar/include/channels/channel_guid.h
delete mode 100644 drivers/staging/unisys/common-spar/include/channels/controlvmchannel.h
create mode 100644 drivers/staging/unisys/include/channel.h
create mode 100644 drivers/staging/unisys/include/channel_guid.h
create mode 100644 drivers/staging/unisys/visorbus/controlvmchannel.h
diff --git a/drivers/staging/unisys/common-spar/include/channels/channel.h b/drivers/staging/unisys/common-spar/include/channels/channel.h
deleted file mode 100644
index 6fb6e5b..0000000
--- a/drivers/staging/unisys/common-spar/include/channels/channel.h
+++ /dev/null
@@ -1,590 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * 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 of the License, 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, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- */
-
-#ifndef __CHANNEL_H__
-#define __CHANNEL_H__
-
-#include <linux/types.h>
-#include <linux/io.h>
-#include <linux/uuid.h>
-
-/*
-* Whenever this file is changed a corresponding change must be made in
-* the Console/ServicePart/visordiag_early/supervisor_channel.h file
-* which is needed for Linux kernel compiles. These two files must be
-* in sync.
-*/
-
-/* define the following to prevent include nesting in kernel header
- * files of similar abbreviated content
- */
-#define __SUPERVISOR_CHANNEL_H__
-
-#define SIGNATURE_16(A, B) ((A) | (B<<8))
-#define SIGNATURE_32(A, B, C, D) \
- (SIGNATURE_16(A, B) | (SIGNATURE_16(C, D) << 16))
-#define SIGNATURE_64(A, B, C, D, E, F, G, H) \
- (SIGNATURE_32(A, B, C, D) | ((u64)(SIGNATURE_32(E, F, G, H)) << 32))
-
-#ifndef lengthof
-#define lengthof(TYPE, MEMBER) (sizeof(((TYPE *)0)->MEMBER))
-#endif
-#ifndef COVERQ
-#define COVERQ(v, d) (((v)+(d)-1) / (d))
-#endif
-#ifndef COVER
-#define COVER(v, d) ((d)*COVERQ(v, d))
-#endif
-
-#define ULTRA_CHANNEL_PROTOCOL_SIGNATURE SIGNATURE_32('E', 'C', 'N', 'L')
-
-enum channel_serverstate {
- CHANNELSRV_UNINITIALIZED = 0, /* channel is in an undefined state */
- CHANNELSRV_READY = 1 /* channel has been initialized by server */
-};
-
-enum channel_clientstate {
- CHANNELCLI_DETACHED = 0,
- CHANNELCLI_DISABLED = 1, /* client can see channel but is NOT
- * allowed to use it unless given TBD
- * explicit request (should actually be
- * < DETACHED) */
- CHANNELCLI_ATTACHING = 2, /* legacy EFI client request
- * for EFI server to attach */
- CHANNELCLI_ATTACHED = 3, /* idle, but client may want
- * to use channel any time */
- CHANNELCLI_BUSY = 4, /* client either wants to use or is
- * using channel */
- CHANNELCLI_OWNED = 5 /* "no worries" state - client can
- * access channel anytime */
-};
-
-static inline const u8 *
-ULTRA_CHANNELCLI_STRING(u32 v)
-{
- switch (v) {
- case CHANNELCLI_DETACHED:
- return (const u8 *)("DETACHED");
- case CHANNELCLI_DISABLED:
- return (const u8 *)("DISABLED");
- case CHANNELCLI_ATTACHING:
- return (const u8 *)("ATTACHING");
- case CHANNELCLI_ATTACHED:
- return (const u8 *)("ATTACHED");
- case CHANNELCLI_BUSY:
- return (const u8 *)("BUSY");
- case CHANNELCLI_OWNED:
- return (const u8 *)("OWNED");
- default:
- break;
- }
- return (const u8 *)("?");
-}
-
-#define SPAR_CHANNEL_SERVER_READY(ch) \
- (readl(&(ch)->srv_state) == CHANNELSRV_READY)
-
-#define ULTRA_VALID_CHANNELCLI_TRANSITION(o, n) \
- (((((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_DISABLED)) || \
- (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_DISABLED)) || \
- (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_DISABLED)) || \
- (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_DETACHED)) || \
- (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_DETACHED)) || \
- (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_ATTACHING)) || \
- (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_ATTACHED)) || \
- (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_ATTACHED)) || \
- (((o) == CHANNELCLI_BUSY) && ((n) == CHANNELCLI_ATTACHED)) || \
- (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_BUSY)) || \
- (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_OWNED)) || \
- (((o) == CHANNELCLI_DISABLED) && ((n) == CHANNELCLI_OWNED)) || \
- (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_OWNED)) || \
- (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_OWNED)) || \
- (((o) == CHANNELCLI_BUSY) && ((n) == CHANNELCLI_OWNED)) || (0)) \
- ? (1) : (0))
-
-#define SPAR_CHANNEL_CLIENT_CHK_TRANSITION(old, new, id, log, \
- file, line) \
- do { \
- if (!ULTRA_VALID_CHANNELCLI_TRANSITION(old, new)) \
- pr_info("%s Channel StateTransition INVALID! (%s) %s(%d)-->%s(%d) @%s:%d\n", \
- id, "CliState<x>", \
- ULTRA_CHANNELCLI_STRING(old), \
- old, \
- ULTRA_CHANNELCLI_STRING(new), \
- new, \
- pathname_last_n_nodes((u8 *)file, 4), \
- line); \
- } while (0)
-
-#define SPAR_CHANNEL_CLIENT_TRANSITION(ch, id, newstate, log) \
- do { \
- SPAR_CHANNEL_CLIENT_CHK_TRANSITION( \
- readl(&(((struct channel_header __iomem *)\
- (ch))->cli_state_os)), \
- newstate, id, log, __FILE__, __LINE__); \
- pr_info("%s Channel StateTransition (%s) %s(%d)-->%s(%d) @%s:%d\n", \
- id, "CliStateOS", \
- ULTRA_CHANNELCLI_STRING( \
- readl(&((struct channel_header __iomem *)\
- (ch))->cli_state_os)), \
- readl(&((struct channel_header __iomem *)\
- (ch))->cli_state_os), \
- ULTRA_CHANNELCLI_STRING(newstate), \
- newstate, \
- pathname_last_n_nodes(__FILE__, 4), __LINE__); \
- writel(newstate, &((struct channel_header __iomem *)\
- (ch))->cli_state_os); \
- mb(); /* required for channel synch */ \
- } while (0)
-
-/* Values for ULTRA_CHANNEL_PROTOCOL.CliErrorBoot: */
-/* throttling invalid boot channel statetransition error due to client
- * disabled */
-#define ULTRA_CLIERRORBOOT_THROTTLEMSG_DISABLED 0x01
-
-/* throttling invalid boot channel statetransition error due to client
- * not attached */
-#define ULTRA_CLIERRORBOOT_THROTTLEMSG_NOTATTACHED 0x02
-
-/* throttling invalid boot channel statetransition error due to busy channel */
-#define ULTRA_CLIERRORBOOT_THROTTLEMSG_BUSY 0x04
-
-/* Values for ULTRA_CHANNEL_PROTOCOL.CliErrorOS: */
-/* throttling invalid guest OS channel statetransition error due to
- * client disabled */
-#define ULTRA_CLIERROROS_THROTTLEMSG_DISABLED 0x01
-
-/* throttling invalid guest OS channel statetransition error due to
- * client not attached */
-#define ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED 0x02
-
-/* throttling invalid guest OS channel statetransition error due to
- * busy channel */
-#define ULTRA_CLIERROROS_THROTTLEMSG_BUSY 0x04
-
-/* Values for ULTRA_CHANNEL_PROTOCOL.Features: This define exists so
-* that windows guest can look at the FeatureFlags in the io channel,
-* and configure the windows driver to use interrupts or not based on
-* this setting. This flag is set in uislib after the
-* ULTRA_VHBA_init_channel is called. All feature bits for all
-* channels should be defined here. The io channel feature bits are
-* defined right here */
-#define ULTRA_IO_DRIVER_ENABLES_INTS (0x1ULL << 1)
-#define ULTRA_IO_CHANNEL_IS_POLLING (0x1ULL << 3)
-#define ULTRA_IO_IOVM_IS_OK_WITH_DRIVER_DISABLING_INTS (0x1ULL << 4)
-#define ULTRA_IO_DRIVER_DISABLES_INTS (0x1ULL << 5)
-#define ULTRA_IO_DRIVER_SUPPORTS_ENHANCED_RCVBUF_CHECKING (0x1ULL << 6)
-
-#pragma pack(push, 1) /* both GCC and VC now allow this pragma */
-/* Common Channel Header */
-struct channel_header {
- u64 signature; /* Signature */
- u32 legacy_state; /* DEPRECATED - being replaced by */
- /* / SrvState, CliStateBoot, and CliStateOS below */
- u32 header_size; /* sizeof(struct channel_header) */
- u64 size; /* Total size of this channel in bytes */
- u64 features; /* Flags to modify behavior */
- uuid_le chtype; /* Channel type: data, bus, control, etc. */
- u64 partition_handle; /* ID of guest partition */
- u64 handle; /* Device number of this channel in client */
- u64 ch_space_offset; /* Offset in bytes to channel specific area */
- u32 version_id; /* struct channel_header Version ID */
- u32 partition_index; /* Index of guest partition */
- uuid_le zone_uuid; /* Guid of Channel's zone */
- u32 cli_str_offset; /* offset from channel header to
- * nul-terminated ClientString (0 if
- * ClientString not present) */
- u32 cli_state_boot; /* CHANNEL_CLIENTSTATE of pre-boot
- * EFI client of this channel */
- u32 cmd_state_cli; /* CHANNEL_COMMANDSTATE (overloaded in
- * Windows drivers, see ServerStateUp,
- * ServerStateDown, etc) */
- u32 cli_state_os; /* CHANNEL_CLIENTSTATE of Guest OS
- * client of this channel */
- u32 ch_characteristic; /* CHANNEL_CHARACTERISTIC_<xxx> */
- u32 cmd_state_srv; /* CHANNEL_COMMANDSTATE (overloaded in
- * Windows drivers, see ServerStateUp,
- * ServerStateDown, etc) */
- u32 srv_state; /* CHANNEL_SERVERSTATE */
- u8 cli_error_boot; /* bits to indicate err states for
- * boot clients, so err messages can
- * be throttled */
- u8 cli_error_os; /* bits to indicate err states for OS
- * clients, so err messages can be
- * throttled */
- u8 filler[1]; /* Pad out to 128 byte cacheline */
- /* Please add all new single-byte values below here */
- u8 recover_channel;
-};
-
-#define ULTRA_CHANNEL_ENABLE_INTS (0x1ULL << 0)
-
-/* Subheader for the Signal Type variation of the Common Channel */
-struct signal_queue_header {
- /* 1st cache line */
- u32 version; /* SIGNAL_QUEUE_HEADER Version ID */
- u32 chtype; /* Queue type: storage, network */
- u64 size; /* Total size of this queue in bytes */
- u64 sig_base_offset; /* Offset to signal queue area */
- u64 features; /* Flags to modify behavior */
- u64 num_sent; /* Total # of signals placed in this queue */
- u64 num_overflows; /* Total # of inserts failed due to
- * full queue */
- u32 signal_size; /* Total size of a signal for this queue */
- u32 max_slots; /* Max # of slots in queue, 1 slot is
- * always empty */
- u32 max_signals; /* Max # of signals in queue
- * (MaxSignalSlots-1) */
- u32 head; /* Queue head signal # */
- /* 2nd cache line */
- u64 num_received; /* Total # of signals removed from this queue */
- u32 tail; /* Queue tail signal # (on separate
- * cache line) */
- u32 reserved1; /* Reserved field */
- u64 reserved2; /* Reserved field */
- u64 client_queue;
- u64 num_irq_received; /* Total # of Interrupts received. This
- * is incremented by the ISR in the
- * guest windows driver */
- u64 num_empty; /* Number of times that visor_signal_remove
- * is called and returned Empty
- * Status. */
- u32 errorflags; /* Error bits set during SignalReinit
- * to denote trouble with client's
- * fields */
- u8 filler[12]; /* Pad out to 64 byte cacheline */
-};
-
-#pragma pack(pop)
-
-#define spar_signal_init(chan, QHDRFLD, QDATAFLD, QDATATYPE, ver, typ) \
- do { \
- memset(&chan->QHDRFLD, 0, sizeof(chan->QHDRFLD)); \
- chan->QHDRFLD.version = ver; \
- chan->QHDRFLD.chtype = typ; \
- chan->QHDRFLD.size = sizeof(chan->QDATAFLD); \
- chan->QHDRFLD.signal_size = sizeof(QDATATYPE); \
- chan->QHDRFLD.sig_base_offset = (u64)(chan->QDATAFLD)- \
- (u64)(&chan->QHDRFLD); \
- chan->QHDRFLD.max_slots = \
- sizeof(chan->QDATAFLD)/sizeof(QDATATYPE); \
- chan->QHDRFLD.max_signals = chan->QHDRFLD.max_slots-1; \
- } while (0)
-
-/* Generic function useful for validating any type of channel when it is
- * received by the client that will be accessing the channel.
- * Note that <logCtx> is only needed for callers in the EFI environment, and
- * is used to pass the EFI_DIAG_CAPTURE_PROTOCOL needed to log messages.
- */
-static inline int
-spar_check_channel_client(void __iomem *ch,
- uuid_le expected_uuid,
- char *chname,
- u64 expected_min_bytes,
- u32 expected_version,
- u64 expected_signature)
-{
- if (uuid_le_cmp(expected_uuid, NULL_UUID_LE) != 0) {
- uuid_le guid;
-
- memcpy_fromio(&guid,
- &((struct channel_header __iomem *)(ch))->chtype,
- sizeof(guid));
- /* caller wants us to verify type GUID */
- if (uuid_le_cmp(guid, expected_uuid) != 0) {
- pr_err("Channel mismatch on channel=%s(%pUL) field=type expected=%pUL actual=%pUL\n",
- chname, &expected_uuid,
- &expected_uuid, &guid);
- return 0;
- }
- }
- if (expected_min_bytes > 0) { /* caller wants us to verify
- * channel size */
- unsigned long long bytes =
- readq(&((struct channel_header __iomem *)
- (ch))->size);
- if (bytes < expected_min_bytes) {
- pr_err("Channel mismatch on channel=%s(%pUL) field=size expected=0x%-8.8Lx actual=0x%-8.8Lx\n",
- chname, &expected_uuid,
- (unsigned long long)expected_min_bytes, bytes);
- return 0;
- }
- }
- if (expected_version > 0) { /* caller wants us to verify
- * channel version */
- unsigned long ver = readl(&((struct channel_header __iomem *)
- (ch))->version_id);
- if (ver != expected_version) {
- pr_err("Channel mismatch on channel=%s(%pUL) field=version expected=0x%-8.8lx actual=0x%-8.8lx\n",
- chname, &expected_uuid,
- (unsigned long)expected_version, ver);
- return 0;
- }
- }
- if (expected_signature > 0) { /* caller wants us to verify
- * channel signature */
- unsigned long long sig =
- readq(&((struct channel_header __iomem *)
- (ch))->signature);
- if (sig != expected_signature) {
- pr_err("Channel mismatch on channel=%s(%pUL) field=signature expected=0x%-8.8llx actual=0x%-8.8llx\n",
- chname, &expected_uuid,
- expected_signature, sig);
- return 0;
- }
- }
- return 1;
-}
-
-/* Generic function useful for validating any type of channel when it is about
- * to be initialized by the server of the channel.
- * Note that <logCtx> is only needed for callers in the EFI environment, and
- * is used to pass the EFI_DIAG_CAPTURE_PROTOCOL needed to log messages.
- */
-static inline int spar_check_channel_server(uuid_le typeuuid, char *name,
- u64 expected_min_bytes,
- u64 actual_bytes)
-{
- if (expected_min_bytes > 0) /* caller wants us to verify
- * channel size */
- if (actual_bytes < expected_min_bytes) {
- pr_err("Channel mismatch on channel=%s(%pUL) field=size expected=0x%-8.8llx actual=0x%-8.8llx\n",
- name, &typeuuid, expected_min_bytes,
- actual_bytes);
- return 0;
- }
- return 1;
-}
-
-/* Given a file pathname <s> (with '/' or '\' separating directory nodes),
- * returns a pointer to the beginning of a node within that pathname such
- * that the number of nodes from that pointer to the end of the string is
- * NOT more than <n>. Note that if the pathname has less than <n> nodes
- * in it, the return pointer will be to the beginning of the string.
- */
-static inline u8 *
-pathname_last_n_nodes(u8 *s, unsigned int n)
-{
- u8 *p = s;
- unsigned int node_count = 0;
-
- while (*p != '\0') {
- if ((*p == '/') || (*p == '\\'))
- node_count++;
- p++;
- }
- if (node_count <= n)
- return s;
- while (n > 0) {
- p--;
- if (p == s)
- break; /* should never happen, unless someone
- * is changing the string while we are
- * looking at it!! */
- if ((*p == '/') || (*p == '\\'))
- n--;
- }
- return p + 1;
-}
-
-static inline int
-spar_channel_client_acquire_os(void __iomem *ch, u8 *id)
-{
- struct channel_header __iomem *hdr = ch;
-
- if (readl(&hdr->cli_state_os) == CHANNELCLI_DISABLED) {
- if ((readb(&hdr->cli_error_os)
- & ULTRA_CLIERROROS_THROTTLEMSG_DISABLED) == 0) {
- /* we are NOT throttling this message */
- writeb(readb(&hdr->cli_error_os) |
- ULTRA_CLIERROROS_THROTTLEMSG_DISABLED,
- &hdr->cli_error_os);
- /* throttle until acquire successful */
-
- pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client DISABLED\n",
- id);
- }
- return 0;
- }
- if ((readl(&hdr->cli_state_os) != CHANNELCLI_OWNED) &&
- (readl(&hdr->cli_state_boot) == CHANNELCLI_DISABLED)) {
- /* Our competitor is DISABLED, so we can transition to OWNED */
- pr_info("%s Channel StateTransition (%s) %s(%d)-->%s(%d)\n",
- id, "cli_state_os",
- ULTRA_CHANNELCLI_STRING(readl(&hdr->cli_state_os)),
- readl(&hdr->cli_state_os),
- ULTRA_CHANNELCLI_STRING(CHANNELCLI_OWNED),
- CHANNELCLI_OWNED);
- writel(CHANNELCLI_OWNED, &hdr->cli_state_os);
- mb(); /* required for channel synch */
- }
- if (readl(&hdr->cli_state_os) == CHANNELCLI_OWNED) {
- if (readb(&hdr->cli_error_os) != 0) {
- /* we are in an error msg throttling state;
- * come out of it */
- pr_info("%s Channel OS client acquire now successful\n",
- id);
- writeb(0, &hdr->cli_error_os);
- }
- return 1;
- }
-
- /* We have to do it the "hard way". We transition to BUSY,
- * and can use the channel iff our competitor has not also
- * transitioned to BUSY. */
- if (readl(&hdr->cli_state_os) != CHANNELCLI_ATTACHED) {
- if ((readb(&hdr->cli_error_os)
- & ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED) == 0) {
- /* we are NOT throttling this message */
- writeb(readb(&hdr->cli_error_os) |
- ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED,
- &hdr->cli_error_os);
- /* throttle until acquire successful */
- pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client NOT ATTACHED (state=%s(%d))\n",
- id, ULTRA_CHANNELCLI_STRING(
- readl(&hdr->cli_state_os)),
- readl(&hdr->cli_state_os));
- }
- return 0;
- }
- writel(CHANNELCLI_BUSY, &hdr->cli_state_os);
- mb(); /* required for channel synch */
- if (readl(&hdr->cli_state_boot) == CHANNELCLI_BUSY) {
- if ((readb(&hdr->cli_error_os)
- & ULTRA_CLIERROROS_THROTTLEMSG_BUSY) == 0) {
- /* we are NOT throttling this message */
- writeb(readb(&hdr->cli_error_os) |
- ULTRA_CLIERROROS_THROTTLEMSG_BUSY,
- &hdr->cli_error_os);
- /* throttle until acquire successful */
- pr_info("%s Channel StateTransition failed - host OS acquire failed because boot BUSY\n",
- id);
- }
- /* reset busy */
- writel(CHANNELCLI_ATTACHED, &hdr->cli_state_os);
- mb(); /* required for channel synch */
- return 0;
- }
- if (readb(&hdr->cli_error_os) != 0) {
- /* we are in an error msg throttling state; come out of it */
- pr_info("%s Channel OS client acquire now successful\n", id);
- writeb(0, &hdr->cli_error_os);
- }
- return 1;
-}
-
-static inline void
-spar_channel_client_release_os(void __iomem *ch, u8 *id)
-{
- struct channel_header __iomem *hdr = ch;
-
- if (readb(&hdr->cli_error_os) != 0) {
- /* we are in an error msg throttling state; come out of it */
- pr_info("%s Channel OS client error state cleared\n", id);
- writeb(0, &hdr->cli_error_os);
- }
- if (readl(&hdr->cli_state_os) == CHANNELCLI_OWNED)
- return;
- if (readl(&hdr->cli_state_os) != CHANNELCLI_BUSY) {
- pr_info("%s Channel StateTransition INVALID! - release failed because OS client NOT BUSY (state=%s(%d))\n",
- id, ULTRA_CHANNELCLI_STRING(
- readl(&hdr->cli_state_os)),
- readl(&hdr->cli_state_os));
- /* return; */
- }
- writel(CHANNELCLI_ATTACHED, &hdr->cli_state_os); /* release busy */
-}
-
-/*
-* Routine Description:
-* Tries to insert the prebuilt signal pointed to by pSignal into the nth
-* Queue of the Channel pointed to by pChannel
-*
-* Parameters:
-* pChannel: (IN) points to the IO Channel
-* Queue: (IN) nth Queue of the IO Channel
-* pSignal: (IN) pointer to the signal
-*
-* Assumptions:
-* - pChannel, Queue and pSignal are valid.
-* - If insertion fails due to a full queue, the caller will determine the
-* retry policy (e.g. wait & try again, report an error, etc.).
-*
-* Return value: 1 if the insertion succeeds, 0 if the queue was
-* full.
-*/
-
-unsigned char spar_signal_insert(struct channel_header __iomem *ch, u32 queue,
- void *sig);
-
-/*
-* Routine Description:
-* Removes one signal from Channel pChannel's nth Queue at the
-* time of the call and copies it into the memory pointed to by
-* pSignal.
-*
-* Parameters:
-* pChannel: (IN) points to the IO Channel
-* Queue: (IN) nth Queue of the IO Channel
-* pSignal: (IN) pointer to where the signals are to be copied
-*
-* Assumptions:
-* - pChannel and Queue are valid.
-* - pSignal points to a memory area large enough to hold queue's SignalSize
-*
-* Return value: 1 if the removal succeeds, 0 if the queue was
-* empty.
-*/
-
-unsigned char spar_signal_remove(struct channel_header __iomem *ch, u32 queue,
- void *sig);
-
-/*
-* Routine Description:
-* Removes all signals present in Channel pChannel's nth Queue at the
-* time of the call and copies them into the memory pointed to by
-* pSignal. Returns the # of signals copied as the value of the routine.
-*
-* Parameters:
-* pChannel: (IN) points to the IO Channel
-* Queue: (IN) nth Queue of the IO Channel
-* pSignal: (IN) pointer to where the signals are to be copied
-*
-* Assumptions:
-* - pChannel and Queue are valid.
-* - pSignal points to a memory area large enough to hold Queue's MaxSignals
-* # of signals, each of which is Queue's SignalSize.
-*
-* Return value:
-* # of signals copied.
-*/
-unsigned int spar_signal_remove_all(struct channel_header *ch, u32 queue,
- void *sig);
-
-/*
-* Routine Description:
-* Determine whether a signal queue is empty.
-*
-* Parameters:
-* pChannel: (IN) points to the IO Channel
-* Queue: (IN) nth Queue of the IO Channel
-*
-* Return value:
-* 1 if the signal queue is empty, 0 otherwise.
-*/
-unsigned char spar_signalqueue_empty(struct channel_header __iomem *ch,
- u32 queue);
-
-#endif
diff --git a/drivers/staging/unisys/common-spar/include/channels/channel_guid.h b/drivers/staging/unisys/common-spar/include/channels/channel_guid.h
deleted file mode 100644
index 706363fc..0000000
--- a/drivers/staging/unisys/common-spar/include/channels/channel_guid.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * 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 of the License, 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, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- */
-
-/*
- * CHANNEL Guids
- */
-
-/* Used in IOChannel
- * {414815ed-c58c-11da-95a9-00e08161165f}
- */
-#define SPAR_VHBA_CHANNEL_PROTOCOL_UUID \
- UUID_LE(0x414815ed, 0xc58c, 0x11da, \
- 0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
-static const uuid_le spar_vhba_channel_protocol_uuid =
- SPAR_VHBA_CHANNEL_PROTOCOL_UUID;
-
-/* Used in IOChannel
- * {8cd5994d-c58e-11da-95a9-00e08161165f}
- */
-#define SPAR_VNIC_CHANNEL_PROTOCOL_UUID \
- UUID_LE(0x8cd5994d, 0xc58e, 0x11da, \
- 0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
-static const uuid_le spar_vnic_channel_protocol_uuid =
- SPAR_VNIC_CHANNEL_PROTOCOL_UUID;
-
-/* Used in IOChannel
- * {72120008-4AAB-11DC-8530-444553544200}
- */
-#define SPAR_SIOVM_UUID \
- UUID_LE(0x72120008, 0x4AAB, 0x11DC, \
- 0x85, 0x30, 0x44, 0x45, 0x53, 0x54, 0x42, 0x00)
-static const uuid_le spar_siovm_uuid = SPAR_SIOVM_UUID;
-
-/* Used in visornoop/visornoop_main.c
- * {5b52c5ac-e5f5-4d42-8dff-429eaecd221f}
- */
-#define SPAR_CONTROLDIRECTOR_CHANNEL_PROTOCOL_UUID \
- UUID_LE(0x5b52c5ac, 0xe5f5, 0x4d42, \
- 0x8d, 0xff, 0x42, 0x9e, 0xae, 0xcd, 0x22, 0x1f)
-
-static const uuid_le spar_controldirector_channel_protocol_uuid =
- SPAR_CONTROLDIRECTOR_CHANNEL_PROTOCOL_UUID;
-
-/* Used in visorchipset/visorchipset_main.c
- * {B4E79625-AEDE-4EAA-9E11-D3EDDCD4504C}
- */
-#define SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID \
- UUID_LE(0xb4e79625, 0xaede, 0x4eaa, \
- 0x9e, 0x11, 0xd3, 0xed, 0xdc, 0xd4, 0x50, 0x4c)
diff --git a/drivers/staging/unisys/common-spar/include/channels/controlvmchannel.h b/drivers/staging/unisys/common-spar/include/channels/controlvmchannel.h
deleted file mode 100644
index a50d9cf..0000000
--- a/drivers/staging/unisys/common-spar/include/channels/controlvmchannel.h
+++ /dev/null
@@ -1,485 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * 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 of the License, 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, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- */
-
-#ifndef __CONTROLVMCHANNEL_H__
-#define __CONTROLVMCHANNEL_H__
-
-#include <linux/uuid.h>
-#include "channel.h"
-
-/* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */
-#define SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID \
- UUID_LE(0x2b3c2d10, 0x7ef5, 0x4ad8, \
- 0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d)
-
-#define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE \
- ULTRA_CHANNEL_PROTOCOL_SIGNATURE
-#define CONTROLVM_MESSAGE_MAX 64
-
-/* 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.
- */
-#define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID 1
-
-#define SPAR_CONTROLVM_CHANNEL_OK_CLIENT(ch) \
- spar_check_channel_client(ch, \
- SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID, \
- "controlvm", \
- sizeof(struct spar_controlvm_channel_protocol), \
- ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID, \
- ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE)
-
-#define MAX_SERIAL_NUM 32
-
-/* Defines for various channel queues */
-#define CONTROLVM_QUEUE_REQUEST 0
-#define CONTROLVM_QUEUE_RESPONSE 1
-#define CONTROLVM_QUEUE_EVENT 2
-#define CONTROLVM_QUEUE_ACK 3
-
-/* Max num of messages stored during IOVM creation to be reused after crash */
-#define CONTROLVM_CRASHMSG_MAX 2
-
-struct spar_segment_state {
- u16 enabled:1; /* Bit 0: May enter other states */
- u16 active:1; /* Bit 1: Assigned to active partition */
- u16 alive:1; /* Bit 2: Configure message sent to
- * service/server */
- u16 revoked:1; /* Bit 3: similar to partition state
- * ShuttingDown */
- u16 allocated:1; /* Bit 4: memory (device/port number)
- * has been selected by Command */
- u16 known:1; /* Bit 5: has been introduced to the
- * service/guest partition */
- u16 ready:1; /* Bit 6: service/Guest partition has
- * responded to introduction */
- u16 operating:1; /* Bit 7: resource is configured and
- * operating */
- /* Note: don't use high bit unless we need to switch to ushort
- * which is non-compliant */
-};
-
-static const struct spar_segment_state segment_state_running = {
- 1, 1, 1, 0, 1, 1, 1, 1
-};
-
-static const struct spar_segment_state segment_state_paused = {
- 1, 1, 1, 0, 1, 1, 1, 0
-};
-
-static const struct spar_segment_state segment_state_standby = {
- 1, 1, 0, 0, 1, 1, 1, 0
-};
-
-/* Ids for commands that may appear in either queue of a ControlVm channel.
- *
- * Commands that are initiated by the command partition (CP), by an IO or
- * console service partition (SP), or by a guest partition (GP)are:
- * - issued on the RequestQueue queue (q #0) in the ControlVm channel
- * - responded to on the ResponseQueue queue (q #1) in the ControlVm channel
- *
- * Events that are initiated by an IO or console service partition (SP) or
- * by a guest partition (GP) are:
- * - issued on the EventQueue queue (q #2) in the ControlVm channel
- * - responded to on the EventAckQueue queue (q #3) in the ControlVm channel
- */
-enum controlvm_id {
- CONTROLVM_INVALID = 0,
- /* SWITCH commands required Parameter: SwitchNumber */
- /* BUS commands required Parameter: BusNumber */
- CONTROLVM_BUS_CREATE = 0x101, /* CP --> SP, GP */
- CONTROLVM_BUS_DESTROY = 0x102, /* CP --> SP, GP */
- CONTROLVM_BUS_CONFIGURE = 0x104, /* CP --> SP */
- CONTROLVM_BUS_CHANGESTATE = 0x105, /* CP --> SP, GP */
- CONTROLVM_BUS_CHANGESTATE_EVENT = 0x106, /* SP, GP --> CP */
-/* DEVICE commands required Parameter: BusNumber, DeviceNumber */
-
- CONTROLVM_DEVICE_CREATE = 0x201, /* CP --> SP, GP */
- CONTROLVM_DEVICE_DESTROY = 0x202, /* CP --> SP, GP */
- CONTROLVM_DEVICE_CONFIGURE = 0x203, /* CP --> SP */
- CONTROLVM_DEVICE_CHANGESTATE = 0x204, /* CP --> SP, GP */
- CONTROLVM_DEVICE_CHANGESTATE_EVENT = 0x205, /* SP, GP --> CP */
- CONTROLVM_DEVICE_RECONFIGURE = 0x206, /* CP --> Boot */
-/* CHIPSET commands */
- CONTROLVM_CHIPSET_INIT = 0x301, /* CP --> SP, GP */
- CONTROLVM_CHIPSET_STOP = 0x302, /* CP --> SP, GP */
- CONTROLVM_CHIPSET_READY = 0x304, /* CP --> SP */
- CONTROLVM_CHIPSET_SELFTEST = 0x305, /* CP --> SP */
-
-};
-
-struct irq_info {
- u64 reserved1;
-
- /* specifies interrupt handle. It is used to retrieve the
- * corresponding interrupt pin from Monitor; and the
- * interrupt pin is used to connect to the corresponding
- * interrupt. Used by IOPart-GP only.
- */
- u64 recv_irq_handle;
-
- /* specifies interrupt vector. It, interrupt pin, and shared are
- * used to connect to the corresponding interrupt. Used by
- * IOPart-GP only.
- */
- u32 recv_irq_vector;
-
- /* specifies if the recvInterrupt is shared. It, interrupt pin
- * and vector are used to connect to 0 = not shared; 1 = shared.
- * the corresponding interrupt. Used by IOPart-GP only.
- */
- u8 recv_irq_shared;
- u8 reserved[3]; /* Natural alignment purposes */
-};
-
-struct pci_id {
- u16 domain;
- u8 bus;
- u8 slot;
- u8 func;
- u8 reserved[3]; /* Natural alignment purposes */
-};
-
-struct efi_spar_indication {
- u64 boot_to_fw_ui:1; /* Bit 0: Stop in uefi ui */
- u64 clear_nvram:1; /* Bit 1: Clear NVRAM */
- u64 clear_cmos:1; /* Bit 2: Clear CMOS */
- u64 boot_to_tool:1; /* Bit 3: Run install tool */
- /* remaining bits are available */
-};
-
-enum ultra_chipset_feature {
- ULTRA_CHIPSET_FEATURE_REPLY = 0x00000001,
- ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG = 0x00000002,
-};
-
-/* This is the common structure that is at the beginning of every
- * ControlVm message (both commands and responses) in any ControlVm
- * queue. Commands are easily distinguished from responses by
- * looking at the flags.response field.
- */
-struct controlvm_message_header {
- u32 id; /* See CONTROLVM_ID. */
- /* For requests, indicates the message type. */
- /* For responses, indicates the type of message we are responding to. */
-
- u32 message_size; /* Includes size of this struct + size
- * of message */
- u32 segment_index; /* Index of segment containing Vm
- * message/information */
- u32 completion_status; /* Error status code or result of
- * message completion */
- struct {
- u32 failed:1; /* =1 in a response to * signify
- * failure */
- u32 response_expected:1; /* =1 in all messages that expect a
- * response (Control ignores this
- * bit) */
- u32 server:1; /* =1 in all bus & device-related
- * messages where the message
- * receiver is to act as the bus or
- * device server */
- u32 test_message:1; /* =1 for testing use only
- * (Control and Command ignore this
- * bit) */
- u32 partial_completion:1; /* =1 if there are forthcoming
- * responses/acks associated
- * with this message */
- u32 preserve:1; /* =1 this is to let us know to
- * preserve channel contents
- * (for running guests)*/
- u32 writer_in_diag:1; /* =1 the DiagWriter is active in the
- * Diagnostic Partition*/
- } flags;
- u32 reserved; /* Natural alignment */
- u64 message_handle; /* Identifies the particular message instance,
- * and is used to match particular */
- /* request instances with the corresponding response instance. */
- u64 payload_vm_offset; /* Offset of payload area from start of this
- * instance of ControlVm segment */
- u32 payload_max_bytes; /* Maximum bytes allocated in payload
- * area of ControlVm segment */
- u32 payload_bytes; /* Actual number of bytes of payload
- * area to copy between IO/Command; */
- /* if non-zero, there is a payload to copy. */
-};
-
-struct controlvm_packet_device_create {
- u32 bus_no; /* bus # (0..n-1) from the msg receiver's end */
- u32 dev_no; /* bus-relative (0..n-1) device number */
- u64 channel_addr; /* Guest physical address of the channel, which
- * can be dereferenced by the receiver of this
- * ControlVm command */
- u64 channel_bytes; /* specifies size of the channel in bytes */
- uuid_le data_type_uuid; /* specifies format of data in channel */
- uuid_le dev_inst_uuid; /* instance guid for the device */
- struct irq_info intr; /* specifies interrupt information */
-}; /* for CONTROLVM_DEVICE_CREATE */
-
-struct controlvm_packet_device_configure {
- u32 bus_no; /* bus # (0..n-1) from the msg
- * receiver's perspective */
- /* Control uses header SegmentIndex field to access bus number... */
- u32 dev_no; /* bus-relative (0..n-1) device number */
-} ; /* for CONTROLVM_DEVICE_CONFIGURE */
-
-struct controlvm_message_device_create {
- struct controlvm_message_header header;
- struct controlvm_packet_device_create packet;
-}; /* total 128 bytes */
-
-struct controlvm_message_device_configure {
- struct controlvm_message_header header;
- struct controlvm_packet_device_configure packet;
-}; /* total 56 bytes */
-
-/* This is the format for a message in any ControlVm queue. */
-struct controlvm_message_packet {
- union {
- struct {
- u32 bus_no; /* bus # (0..n-1) from the msg
- * receiver's perspective */
- u32 dev_count; /* indicates the max number of
- * devices on this bus */
- u64 channel_addr; /* Guest physical address of
- * the channel, which can be
- * dereferenced by the receiver
- * of this ControlVm command */
- u64 channel_bytes; /* size of the channel */
- uuid_le bus_data_type_uuid; /* indicates format of
- * data in bus channel*/
- uuid_le bus_inst_uuid; /* instance uuid for the bus */
- } create_bus; /* for CONTROLVM_BUS_CREATE */
- struct {
- u32 bus_no; /* bus # (0..n-1) from the msg
- * receiver's perspective */
- u32 reserved; /* Natural alignment purposes */
- } destroy_bus; /* for CONTROLVM_BUS_DESTROY */
- struct {
- u32 bus_no; /* bus # (0..n-1) from the receiver's
- * perspective */
- u32 reserved1; /* for alignment purposes */
- u64 guest_handle; /* This is used to convert
- * guest physical address to
- * physical address */
- u64 recv_bus_irq_handle;
- /* specifies interrupt info. It is used by SP
- * to register to receive interrupts from the
- * CP. This interrupt is used for bus level
- * notifications. The corresponding
- * sendBusInterruptHandle is kept in CP. */
- } configure_bus; /* for CONTROLVM_BUS_CONFIGURE */
- /* for CONTROLVM_DEVICE_CREATE */
- struct controlvm_packet_device_create create_device;
- struct {
- u32 bus_no; /* bus # (0..n-1) from the msg
- * receiver's perspective */
- u32 dev_no; /* bus-relative (0..n-1) device # */
- } destroy_device; /* for CONTROLVM_DEVICE_DESTROY */
- /* for CONTROLVM_DEVICE_CONFIGURE */
- struct controlvm_packet_device_configure configure_device;
- struct {
- u32 bus_no; /* bus # (0..n-1) from the msg
- * receiver's perspective */
- u32 dev_no; /* bus-relative (0..n-1) device # */
- } reconfigure_device; /* for CONTROLVM_DEVICE_RECONFIGURE */
- struct {
- u32 bus_no;
- struct spar_segment_state state;
- u8 reserved[2]; /* Natural alignment purposes */
- } bus_change_state; /* for CONTROLVM_BUS_CHANGESTATE */
- struct {
- u32 bus_no;
- u32 dev_no;
- struct spar_segment_state state;
- struct {
- u32 phys_device:1; /* =1 if message is for
- * a physical device */
- } flags;
- u8 reserved[2]; /* Natural alignment purposes */
- } device_change_state; /* for CONTROLVM_DEVICE_CHANGESTATE */
- struct {
- u32 bus_no;
- u32 dev_no;
- struct spar_segment_state state;
- u8 reserved[6]; /* Natural alignment purposes */
- } device_change_state_event;
- /* for CONTROLVM_DEVICE_CHANGESTATE_EVENT */
- struct {
- u32 bus_count; /* indicates the max number of busses */
- u32 switch_count; /* indicates the max number of
- * switches if a service partition */
- enum ultra_chipset_feature features;
- u32 platform_number; /* Platform Number */
- } init_chipset; /* for CONTROLVM_CHIPSET_INIT */
- struct {
- u32 options; /* reserved */
- u32 test; /* bit 0 set to run embedded selftest */
- } chipset_selftest; /* for CONTROLVM_CHIPSET_SELFTEST */
- u64 addr; /* a physical address of something, that can be
- * dereferenced by the receiver of this
- * ControlVm command (depends on command id) */
- u64 handle; /* a handle of something (depends on command
- * id) */
- };
-};
-
-/* All messages in any ControlVm queue have this layout. */
-struct controlvm_message {
- struct controlvm_message_header hdr;
- struct controlvm_message_packet cmd;
-};
-
-struct spar_controlvm_channel_protocol {
- struct channel_header header;
- u64 gp_controlvm; /* guest phys addr of this channel */
- u64 gp_partition_tables;/* guest phys addr of partition tables */
- u64 gp_diag_guest; /* guest phys addr of diagnostic channel */
- u64 gp_boot_romdisk;/* guest phys addr of (read* only) Boot ROM disk */
- u64 gp_boot_ramdisk;/* guest phys addr of writable Boot RAM disk */
- u64 gp_acpi_table; /* guest phys addr of acpi table */
- u64 gp_control_channel;/* guest phys addr of control channel */
- u64 gp_diag_romdisk;/* guest phys addr of diagnostic ROM disk */
- u64 gp_nvram; /* guest phys addr of NVRAM channel */
- u64 request_payload_offset; /* Offset to request payload area */
- u64 event_payload_offset; /* Offset to event payload area */
- u32 request_payload_bytes; /* Bytes available in request payload
- * area */
- u32 event_payload_bytes;/* Bytes available in event payload area */
- u32 control_channel_bytes;
- u32 nvram_channel_bytes; /* Bytes in PartitionNvram segment */
- u32 message_bytes; /* sizeof(CONTROLVM_MESSAGE) */
- u32 message_count; /* CONTROLVM_MESSAGE_MAX */
- u64 gp_smbios_table; /* guest phys addr of SMBIOS tables */
- u64 gp_physical_smbios_table; /* guest phys addr of SMBIOS table */
- /* ULTRA_MAX_GUESTS_PER_SERVICE */
- char gp_reserved[2688];
-
- /* guest physical address of EFI firmware image base */
- u64 virtual_guest_firmware_image_base;
-
- /* guest physical address of EFI firmware entry point */
- u64 virtual_guest_firmware_entry_point;
-
- /* guest EFI firmware image size */
- u64 virtual_guest_firmware_image_size;
-
- /* GPA = 1MB where EFI firmware image is copied to */
- u64 virtual_guest_firmware_boot_base;
- u64 virtual_guest_image_base;
- u64 virtual_guest_image_size;
- u64 prototype_control_channel_offset;
- u64 virtual_guest_partition_handle;
-
- u16 restore_action; /* Restore Action field to restore the guest
- * partition */
- u16 dump_action; /* For Windows guests it shows if the visordisk
- * is running in dump mode */
- u16 nvram_fail_count;
- u16 saved_crash_message_count; /* = CONTROLVM_CRASHMSG_MAX */
- u32 saved_crash_message_offset; /* Offset to request payload area needed
- * for crash dump */
- u32 installation_error; /* Type of error encountered during
- * installation */
- u32 installation_text_id; /* Id of string to display */
- u16 installation_remaining_steps;/* Number of remaining installation
- * steps (for progress bars) */
- u8 tool_action; /* ULTRA_TOOL_ACTIONS Installation Action
- * field */
- u8 reserved; /* alignment */
- struct efi_spar_indication efi_spar_ind;
- struct efi_spar_indication efi_spar_ind_supported;
- u32 sp_reserved;
- u8 reserved2[28]; /* Force signals to begin on 128-byte cache
- * line */
- struct signal_queue_header request_queue;/* Service or guest partition
- * uses this queue to send
- * requests to Control */
- struct signal_queue_header response_queue;/* Control uses this queue to
- * respond to service or guest
- * partition requests */
- struct signal_queue_header event_queue; /* Control uses this queue to
- * send events to service or
- * guest partition */
- struct signal_queue_header event_ack_queue;/* Service or guest partition
- * uses this queue to ack
- * Control events */
-
- /* Request fixed-size message pool - does not include payload */
- struct controlvm_message request_msg[CONTROLVM_MESSAGE_MAX];
-
- /* Response fixed-size message pool - does not include payload */
- struct controlvm_message response_msg[CONTROLVM_MESSAGE_MAX];
-
- /* Event fixed-size message pool - does not include payload */
- struct controlvm_message event_msg[CONTROLVM_MESSAGE_MAX];
-
- /* Ack fixed-size message pool - does not include payload */
- struct controlvm_message event_ack_msg[CONTROLVM_MESSAGE_MAX];
-
- /* Message stored during IOVM creation to be reused after crash */
- struct controlvm_message saved_crash_msg[CONTROLVM_CRASHMSG_MAX];
-};
-
-/* Offsets for VM channel attributes */
-#define VM_CH_REQ_QUEUE_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, request_queue)
-#define VM_CH_RESP_QUEUE_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, response_queue)
-#define VM_CH_EVENT_QUEUE_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, event_queue)
-#define VM_CH_ACK_QUEUE_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, event_ack_queue)
-#define VM_CH_REQ_MSG_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, request_msg)
-#define VM_CH_RESP_MSG_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, response_msg)
-#define VM_CH_EVENT_MSG_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, event_msg)
-#define VM_CH_ACK_MSG_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, event_ack_msg)
-#define VM_CH_CRASH_MSG_OFFSET \
- offsetof(struct spar_controlvm_channel_protocol, saved_crash_msg)
-
-/* The following header will be located at the beginning of PayloadVmOffset for
- * various ControlVm commands. The receiver of a ControlVm command with a
- * PayloadVmOffset will dereference this address and then use connection_offset,
- * initiator_offset, and target_offset to get the location of UTF-8 formatted
- * strings that can be parsed to obtain command-specific information. The value
- * of total_length should equal PayloadBytes. The format of the strings at
- * PayloadVmOffset will take different forms depending on the message.
- */
-struct spar_controlvm_parameters_header {
- u32 total_length;
- u32 header_length;
- u32 connection_offset;
- u32 connection_length;
- u32 initiator_offset;
- u32 initiator_length;
- u32 target_offset;
- u32 target_length;
- u32 client_offset;
- u32 client_length;
- u32 name_offset;
- u32 name_length;
- uuid_le id;
- u32 revision;
- u32 reserved; /* Natural alignment */
-};
-
-#endif /* __CONTROLVMCHANNEL_H__ */
diff --git a/drivers/staging/unisys/include/channel.h b/drivers/staging/unisys/include/channel.h
new file mode 100644
index 0000000..da0b538
--- /dev/null
+++ b/drivers/staging/unisys/include/channel.h
@@ -0,0 +1,555 @@
+/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
+ * All rights reserved.
+ *
+ * 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 of the License, 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ */
+
+#ifndef __CHANNEL_H__
+#define __CHANNEL_H__
+
+#include <linux/types.h>
+#include <linux/io.h>
+#include <linux/uuid.h>
+
+/*
+* Whenever this file is changed a corresponding change must be made in
+* the Console/ServicePart/visordiag_early/supervisor_channel.h file
+* which is needed for Linux kernel compiles. These two files must be
+* in sync.
+*/
+
+/* define the following to prevent include nesting in kernel header
+ * files of similar abbreviated content
+ */
+#define __SUPERVISOR_CHANNEL_H__
+
+#define SIGNATURE_16(A, B) ((A) | (B<<8))
+#define SIGNATURE_32(A, B, C, D) \
+ (SIGNATURE_16(A, B) | (SIGNATURE_16(C, D) << 16))
+#define SIGNATURE_64(A, B, C, D, E, F, G, H) \
+ (SIGNATURE_32(A, B, C, D) | ((u64)(SIGNATURE_32(E, F, G, H)) << 32))
+
+#ifndef lengthof
+#define lengthof(TYPE, MEMBER) (sizeof(((TYPE *)0)->MEMBER))
+#endif
+#ifndef COVERQ
+#define COVERQ(v, d) (((v)+(d)-1) / (d))
+#endif
+#ifndef COVER
+#define COVER(v, d) ((d)*COVERQ(v, d))
+#endif
+
+#define ULTRA_CHANNEL_PROTOCOL_SIGNATURE SIGNATURE_32('E', 'C', 'N', 'L')
+
+enum channel_serverstate {
+ CHANNELSRV_UNINITIALIZED = 0, /* channel is in an undefined state */
+ CHANNELSRV_READY = 1 /* channel has been initialized by server */
+};
+
+enum channel_clientstate {
+ CHANNELCLI_DETACHED = 0,
+ CHANNELCLI_DISABLED = 1, /* client can see channel but is NOT
+ * allowed to use it unless given TBD
+ * explicit request (should actually be
+ * < DETACHED) */
+ CHANNELCLI_ATTACHING = 2, /* legacy EFI client request
+ * for EFI server to attach */
+ CHANNELCLI_ATTACHED = 3, /* idle, but client may want
+ * to use channel any time */
+ CHANNELCLI_BUSY = 4, /* client either wants to use or is
+ * using channel */
+ CHANNELCLI_OWNED = 5 /* "no worries" state - client can
+ * access channel anytime */
+};
+
+static inline const u8 *
+ULTRA_CHANNELCLI_STRING(u32 v)
+{
+ switch (v) {
+ case CHANNELCLI_DETACHED:
+ return (const u8 *)("DETACHED");
+ case CHANNELCLI_DISABLED:
+ return (const u8 *)("DISABLED");
+ case CHANNELCLI_ATTACHING:
+ return (const u8 *)("ATTACHING");
+ case CHANNELCLI_ATTACHED:
+ return (const u8 *)("ATTACHED");
+ case CHANNELCLI_BUSY:
+ return (const u8 *)("BUSY");
+ case CHANNELCLI_OWNED:
+ return (const u8 *)("OWNED");
+ default:
+ break;
+ }
+ return (const u8 *)("?");
+}
+
+#define SPAR_CHANNEL_SERVER_READY(ch) \
+ (readl(&(ch)->srv_state) == CHANNELSRV_READY)
+
+#define ULTRA_VALID_CHANNELCLI_TRANSITION(o, n) \
+ (((((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_DISABLED)) || \
+ (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_DISABLED)) || \
+ (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_DISABLED)) || \
+ (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_DETACHED)) || \
+ (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_DETACHED)) || \
+ (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_ATTACHING)) || \
+ (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_ATTACHED)) || \
+ (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_ATTACHED)) || \
+ (((o) == CHANNELCLI_BUSY) && ((n) == CHANNELCLI_ATTACHED)) || \
+ (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_BUSY)) || \
+ (((o) == CHANNELCLI_DETACHED) && ((n) == CHANNELCLI_OWNED)) || \
+ (((o) == CHANNELCLI_DISABLED) && ((n) == CHANNELCLI_OWNED)) || \
+ (((o) == CHANNELCLI_ATTACHING) && ((n) == CHANNELCLI_OWNED)) || \
+ (((o) == CHANNELCLI_ATTACHED) && ((n) == CHANNELCLI_OWNED)) || \
+ (((o) == CHANNELCLI_BUSY) && ((n) == CHANNELCLI_OWNED)) || (0)) \
+ ? (1) : (0))
+
+/* Values for ULTRA_CHANNEL_PROTOCOL.CliErrorBoot: */
+/* throttling invalid boot channel statetransition error due to client
+ * disabled */
+#define ULTRA_CLIERRORBOOT_THROTTLEMSG_DISABLED 0x01
+
+/* throttling invalid boot channel statetransition error due to client
+ * not attached */
+#define ULTRA_CLIERRORBOOT_THROTTLEMSG_NOTATTACHED 0x02
+
+/* throttling invalid boot channel statetransition error due to busy channel */
+#define ULTRA_CLIERRORBOOT_THROTTLEMSG_BUSY 0x04
+
+/* Values for ULTRA_CHANNEL_PROTOCOL.CliErrorOS: */
+/* throttling invalid guest OS channel statetransition error due to
+ * client disabled */
+#define ULTRA_CLIERROROS_THROTTLEMSG_DISABLED 0x01
+
+/* throttling invalid guest OS channel statetransition error due to
+ * client not attached */
+#define ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED 0x02
+
+/* throttling invalid guest OS channel statetransition error due to
+ * busy channel */
+#define ULTRA_CLIERROROS_THROTTLEMSG_BUSY 0x04
+
+/* Values for ULTRA_CHANNEL_PROTOCOL.Features: This define exists so
+* that windows guest can look at the FeatureFlags in the io channel,
+* and configure the windows driver to use interrupts or not based on
+* this setting. This flag is set in uislib after the
+* ULTRA_VHBA_init_channel is called. All feature bits for all
+* channels should be defined here. The io channel feature bits are
+* defined right here */
+#define ULTRA_IO_DRIVER_ENABLES_INTS (0x1ULL << 1)
+#define ULTRA_IO_CHANNEL_IS_POLLING (0x1ULL << 3)
+#define ULTRA_IO_IOVM_IS_OK_WITH_DRIVER_DISABLING_INTS (0x1ULL << 4)
+#define ULTRA_IO_DRIVER_DISABLES_INTS (0x1ULL << 5)
+#define ULTRA_IO_DRIVER_SUPPORTS_ENHANCED_RCVBUF_CHECKING (0x1ULL << 6)
+
+#pragma pack(push, 1) /* both GCC and VC now allow this pragma */
+/* Common Channel Header */
+struct channel_header {
+ u64 signature; /* Signature */
+ u32 legacy_state; /* DEPRECATED - being replaced by */
+ /* / SrvState, CliStateBoot, and CliStateOS below */
+ u32 header_size; /* sizeof(struct channel_header) */
+ u64 size; /* Total size of this channel in bytes */
+ u64 features; /* Flags to modify behavior */
+ uuid_le chtype; /* Channel type: data, bus, control, etc. */
+ u64 partition_handle; /* ID of guest partition */
+ u64 handle; /* Device number of this channel in client */
+ u64 ch_space_offset; /* Offset in bytes to channel specific area */
+ u32 version_id; /* struct channel_header Version ID */
+ u32 partition_index; /* Index of guest partition */
+ uuid_le zone_uuid; /* Guid of Channel's zone */
+ u32 cli_str_offset; /* offset from channel header to
+ * nul-terminated ClientString (0 if
+ * ClientString not present) */
+ u32 cli_state_boot; /* CHANNEL_CLIENTSTATE of pre-boot
+ * EFI client of this channel */
+ u32 cmd_state_cli; /* CHANNEL_COMMANDSTATE (overloaded in
+ * Windows drivers, see ServerStateUp,
+ * ServerStateDown, etc) */
+ u32 cli_state_os; /* CHANNEL_CLIENTSTATE of Guest OS
+ * client of this channel */
+ u32 ch_characteristic; /* CHANNEL_CHARACTERISTIC_<xxx> */
+ u32 cmd_state_srv; /* CHANNEL_COMMANDSTATE (overloaded in
+ * Windows drivers, see ServerStateUp,
+ * ServerStateDown, etc) */
+ u32 srv_state; /* CHANNEL_SERVERSTATE */
+ u8 cli_error_boot; /* bits to indicate err states for
+ * boot clients, so err messages can
+ * be throttled */
+ u8 cli_error_os; /* bits to indicate err states for OS
+ * clients, so err messages can be
+ * throttled */
+ u8 filler[1]; /* Pad out to 128 byte cacheline */
+ /* Please add all new single-byte values below here */
+ u8 recover_channel;
+};
+
+#define ULTRA_CHANNEL_ENABLE_INTS (0x1ULL << 0)
+
+/* Subheader for the Signal Type variation of the Common Channel */
+struct signal_queue_header {
+ /* 1st cache line */
+ u32 version; /* SIGNAL_QUEUE_HEADER Version ID */
+ u32 chtype; /* Queue type: storage, network */
+ u64 size; /* Total size of this queue in bytes */
+ u64 sig_base_offset; /* Offset to signal queue area */
+ u64 features; /* Flags to modify behavior */
+ u64 num_sent; /* Total # of signals placed in this queue */
+ u64 num_overflows; /* Total # of inserts failed due to
+ * full queue */
+ u32 signal_size; /* Total size of a signal for this queue */
+ u32 max_slots; /* Max # of slots in queue, 1 slot is
+ * always empty */
+ u32 max_signals; /* Max # of signals in queue
+ * (MaxSignalSlots-1) */
+ u32 head; /* Queue head signal # */
+ /* 2nd cache line */
+ u64 num_received; /* Total # of signals removed from this queue */
+ u32 tail; /* Queue tail signal # (on separate
+ * cache line) */
+ u32 reserved1; /* Reserved field */
+ u64 reserved2; /* Reserved field */
+ u64 client_queue;
+ u64 num_irq_received; /* Total # of Interrupts received. This
+ * is incremented by the ISR in the
+ * guest windows driver */
+ u64 num_empty; /* Number of times that visor_signal_remove
+ * is called and returned Empty
+ * Status. */
+ u32 errorflags; /* Error bits set during SignalReinit
+ * to denote trouble with client's
+ * fields */
+ u8 filler[12]; /* Pad out to 64 byte cacheline */
+};
+
+#pragma pack(pop)
+
+#define spar_signal_init(chan, QHDRFLD, QDATAFLD, QDATATYPE, ver, typ) \
+ do { \
+ memset(&chan->QHDRFLD, 0, sizeof(chan->QHDRFLD)); \
+ chan->QHDRFLD.version = ver; \
+ chan->QHDRFLD.chtype = typ; \
+ chan->QHDRFLD.size = sizeof(chan->QDATAFLD); \
+ chan->QHDRFLD.signal_size = sizeof(QDATATYPE); \
+ chan->QHDRFLD.sig_base_offset = (u64)(chan->QDATAFLD)- \
+ (u64)(&chan->QHDRFLD); \
+ chan->QHDRFLD.max_slots = \
+ sizeof(chan->QDATAFLD)/sizeof(QDATATYPE); \
+ chan->QHDRFLD.max_signals = chan->QHDRFLD.max_slots-1; \
+ } while (0)
+
+/* Generic function useful for validating any type of channel when it is
+ * received by the client that will be accessing the channel.
+ * Note that <logCtx> is only needed for callers in the EFI environment, and
+ * is used to pass the EFI_DIAG_CAPTURE_PROTOCOL needed to log messages.
+ */
+static inline int
+spar_check_channel_client(void __iomem *ch,
+ uuid_le expected_uuid,
+ char *chname,
+ u64 expected_min_bytes,
+ u32 expected_version,
+ u64 expected_signature)
+{
+ if (uuid_le_cmp(expected_uuid, NULL_UUID_LE) != 0) {
+ uuid_le guid;
+
+ memcpy_fromio(&guid,
+ &((struct channel_header __iomem *)(ch))->chtype,
+ sizeof(guid));
+ /* caller wants us to verify type GUID */
+ if (uuid_le_cmp(guid, expected_uuid) != 0) {
+ pr_err("Channel mismatch on channel=%s(%pUL) field=type expected=%pUL actual=%pUL\n",
+ chname, &expected_uuid,
+ &expected_uuid, &guid);
+ return 0;
+ }
+ }
+ if (expected_min_bytes > 0) { /* caller wants us to verify
+ * channel size */
+ unsigned long long bytes =
+ readq(&((struct channel_header __iomem *)
+ (ch))->size);
+ if (bytes < expected_min_bytes) {
+ pr_err("Channel mismatch on channel=%s(%pUL) field=size expected=0x%-8.8Lx actual=0x%-8.8Lx\n",
+ chname, &expected_uuid,
+ (unsigned long long)expected_min_bytes, bytes);
+ return 0;
+ }
+ }
+ if (expected_version > 0) { /* caller wants us to verify
+ * channel version */
+ unsigned long ver = readl(&((struct channel_header __iomem *)
+ (ch))->version_id);
+ if (ver != expected_version) {
+ pr_err("Channel mismatch on channel=%s(%pUL) field=version expected=0x%-8.8lx actual=0x%-8.8lx\n",
+ chname, &expected_uuid,
+ (unsigned long)expected_version, ver);
+ return 0;
+ }
+ }
+ if (expected_signature > 0) { /* caller wants us to verify
+ * channel signature */
+ unsigned long long sig =
+ readq(&((struct channel_header __iomem *)
+ (ch))->signature);
+ if (sig != expected_signature) {
+ pr_err("Channel mismatch on channel=%s(%pUL) field=signature expected=0x%-8.8llx actual=0x%-8.8llx\n",
+ chname, &expected_uuid,
+ expected_signature, sig);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* Generic function useful for validating any type of channel when it is about
+ * to be initialized by the server of the channel.
+ * Note that <logCtx> is only needed for callers in the EFI environment, and
+ * is used to pass the EFI_DIAG_CAPTURE_PROTOCOL needed to log messages.
+ */
+static inline int spar_check_channel_server(uuid_le typeuuid, char *name,
+ u64 expected_min_bytes,
+ u64 actual_bytes)
+{
+ if (expected_min_bytes > 0) /* caller wants us to verify
+ * channel size */
+ if (actual_bytes < expected_min_bytes) {
+ pr_err("Channel mismatch on channel=%s(%pUL) field=size expected=0x%-8.8llx actual=0x%-8.8llx\n",
+ name, &typeuuid, expected_min_bytes,
+ actual_bytes);
+ return 0;
+ }
+ return 1;
+}
+
+/* Given a file pathname <s> (with '/' or '\' separating directory nodes),
+ * returns a pointer to the beginning of a node within that pathname such
+ * that the number of nodes from that pointer to the end of the string is
+ * NOT more than <n>. Note that if the pathname has less than <n> nodes
+ * in it, the return pointer will be to the beginning of the string.
+ */
+static inline u8 *
+pathname_last_n_nodes(u8 *s, unsigned int n)
+{
+ u8 *p = s;
+ unsigned int node_count = 0;
+
+ while (*p != '\0') {
+ if ((*p == '/') || (*p == '\\'))
+ node_count++;
+ p++;
+ }
+ if (node_count <= n)
+ return s;
+ while (n > 0) {
+ p--;
+ if (p == s)
+ break; /* should never happen, unless someone
+ * is changing the string while we are
+ * looking at it!! */
+ if ((*p == '/') || (*p == '\\'))
+ n--;
+ }
+ return p + 1;
+}
+
+static inline int
+spar_channel_client_acquire_os(void __iomem *ch, u8 *id)
+{
+ struct channel_header __iomem *hdr = ch;
+
+ if (readl(&hdr->cli_state_os) == CHANNELCLI_DISABLED) {
+ if ((readb(&hdr->cli_error_os)
+ & ULTRA_CLIERROROS_THROTTLEMSG_DISABLED) == 0) {
+ /* we are NOT throttling this message */
+ writeb(readb(&hdr->cli_error_os) |
+ ULTRA_CLIERROROS_THROTTLEMSG_DISABLED,
+ &hdr->cli_error_os);
+ /* throttle until acquire successful */
+
+ pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client DISABLED\n",
+ id);
+ }
+ return 0;
+ }
+ if ((readl(&hdr->cli_state_os) != CHANNELCLI_OWNED) &&
+ (readl(&hdr->cli_state_boot) == CHANNELCLI_DISABLED)) {
+ /* Our competitor is DISABLED, so we can transition to OWNED */
+ pr_info("%s Channel StateTransition (%s) %s(%d)-->%s(%d)\n",
+ id, "cli_state_os",
+ ULTRA_CHANNELCLI_STRING(readl(&hdr->cli_state_os)),
+ readl(&hdr->cli_state_os),
+ ULTRA_CHANNELCLI_STRING(CHANNELCLI_OWNED),
+ CHANNELCLI_OWNED);
+ writel(CHANNELCLI_OWNED, &hdr->cli_state_os);
+ mb(); /* required for channel synch */
+ }
+ if (readl(&hdr->cli_state_os) == CHANNELCLI_OWNED) {
+ if (readb(&hdr->cli_error_os) != 0) {
+ /* we are in an error msg throttling state;
+ * come out of it */
+ pr_info("%s Channel OS client acquire now successful\n",
+ id);
+ writeb(0, &hdr->cli_error_os);
+ }
+ return 1;
+ }
+
+ /* We have to do it the "hard way". We transition to BUSY,
+ * and can use the channel iff our competitor has not also
+ * transitioned to BUSY. */
+ if (readl(&hdr->cli_state_os) != CHANNELCLI_ATTACHED) {
+ if ((readb(&hdr->cli_error_os)
+ & ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED) == 0) {
+ /* we are NOT throttling this message */
+ writeb(readb(&hdr->cli_error_os) |
+ ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED,
+ &hdr->cli_error_os);
+ /* throttle until acquire successful */
+ pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client NOT ATTACHED (state=%s(%d))\n",
+ id, ULTRA_CHANNELCLI_STRING(
+ readl(&hdr->cli_state_os)),
+ readl(&hdr->cli_state_os));
+ }
+ return 0;
+ }
+ writel(CHANNELCLI_BUSY, &hdr->cli_state_os);
+ mb(); /* required for channel synch */
+ if (readl(&hdr->cli_state_boot) == CHANNELCLI_BUSY) {
+ if ((readb(&hdr->cli_error_os)
+ & ULTRA_CLIERROROS_THROTTLEMSG_BUSY) == 0) {
+ /* we are NOT throttling this message */
+ writeb(readb(&hdr->cli_error_os) |
+ ULTRA_CLIERROROS_THROTTLEMSG_BUSY,
+ &hdr->cli_error_os);
+ /* throttle until acquire successful */
+ pr_info("%s Channel StateTransition failed - host OS acquire failed because boot BUSY\n",
+ id);
+ }
+ /* reset busy */
+ writel(CHANNELCLI_ATTACHED, &hdr->cli_state_os);
+ mb(); /* required for channel synch */
+ return 0;
+ }
+ if (readb(&hdr->cli_error_os) != 0) {
+ /* we are in an error msg throttling state; come out of it */
+ pr_info("%s Channel OS client acquire now successful\n", id);
+ writeb(0, &hdr->cli_error_os);
+ }
+ return 1;
+}
+
+static inline void
+spar_channel_client_release_os(void __iomem *ch, u8 *id)
+{
+ struct channel_header __iomem *hdr = ch;
+
+ if (readb(&hdr->cli_error_os) != 0) {
+ /* we are in an error msg throttling state; come out of it */
+ pr_info("%s Channel OS client error state cleared\n", id);
+ writeb(0, &hdr->cli_error_os);
+ }
+ if (readl(&hdr->cli_state_os) == CHANNELCLI_OWNED)
+ return;
+ if (readl(&hdr->cli_state_os) != CHANNELCLI_BUSY) {
+ pr_info("%s Channel StateTransition INVALID! - release failed because OS client NOT BUSY (state=%s(%d))\n",
+ id, ULTRA_CHANNELCLI_STRING(
+ readl(&hdr->cli_state_os)),
+ readl(&hdr->cli_state_os));
+ /* return; */
+ }
+ writel(CHANNELCLI_ATTACHED, &hdr->cli_state_os); /* release busy */
+}
+
+/*
+* Routine Description:
+* Tries to insert the prebuilt signal pointed to by pSignal into the nth
+* Queue of the Channel pointed to by pChannel
+*
+* Parameters:
+* pChannel: (IN) points to the IO Channel
+* Queue: (IN) nth Queue of the IO Channel
+* pSignal: (IN) pointer to the signal
+*
+* Assumptions:
+* - pChannel, Queue and pSignal are valid.
+* - If insertion fails due to a full queue, the caller will determine the
+* retry policy (e.g. wait & try again, report an error, etc.).
+*
+* Return value: 1 if the insertion succeeds, 0 if the queue was
+* full.
+*/
+
+unsigned char spar_signal_insert(struct channel_header __iomem *ch, u32 queue,
+ void *sig);
+
+/*
+* Routine Description:
+* Removes one signal from Channel pChannel's nth Queue at the
+* time of the call and copies it into the memory pointed to by
+* pSignal.
+*
+* Parameters:
+* pChannel: (IN) points to the IO Channel
+* Queue: (IN) nth Queue of the IO Channel
+* pSignal: (IN) pointer to where the signals are to be copied
+*
+* Assumptions:
+* - pChannel and Queue are valid.
+* - pSignal points to a memory area large enough to hold queue's SignalSize
+*
+* Return value: 1 if the removal succeeds, 0 if the queue was
+* empty.
+*/
+
+unsigned char spar_signal_remove(struct channel_header __iomem *ch, u32 queue,
+ void *sig);
+
+/*
+* Routine Description:
+* Removes all signals present in Channel pChannel's nth Queue at the
+* time of the call and copies them into the memory pointed to by
+* pSignal. Returns the # of signals copied as the value of the routine.
+*
+* Parameters:
+* pChannel: (IN) points to the IO Channel
+* Queue: (IN) nth Queue of the IO Channel
+* pSignal: (IN) pointer to where the signals are to be copied
+*
+* Assumptions:
+* - pChannel and Queue are valid.
+* - pSignal points to a memory area large enough to hold Queue's MaxSignals
+* # of signals, each of which is Queue's SignalSize.
+*
+* Return value:
+* # of signals copied.
+*/
+unsigned int spar_signal_remove_all(struct channel_header *ch, u32 queue,
+ void *sig);
+
+/*
+* Routine Description:
+* Determine whether a signal queue is empty.
+*
+* Parameters:
+* pChannel: (IN) points to the IO Channel
+* Queue: (IN) nth Queue of the IO Channel
+*
+* Return value:
+* 1 if the signal queue is empty, 0 otherwise.
+*/
+unsigned char spar_signalqueue_empty(struct channel_header __iomem *ch,
+ u32 queue);
+
+#endif
diff --git a/drivers/staging/unisys/include/channel_guid.h b/drivers/staging/unisys/include/channel_guid.h
new file mode 100644
index 0000000..706363fc
--- /dev/null
+++ b/drivers/staging/unisys/include/channel_guid.h
@@ -0,0 +1,61 @@
+/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
+ * All rights reserved.
+ *
+ * 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 of the License, 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ */
+
+/*
+ * CHANNEL Guids
+ */
+
+/* Used in IOChannel
+ * {414815ed-c58c-11da-95a9-00e08161165f}
+ */
+#define SPAR_VHBA_CHANNEL_PROTOCOL_UUID \
+ UUID_LE(0x414815ed, 0xc58c, 0x11da, \
+ 0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
+static const uuid_le spar_vhba_channel_protocol_uuid =
+ SPAR_VHBA_CHANNEL_PROTOCOL_UUID;
+
+/* Used in IOChannel
+ * {8cd5994d-c58e-11da-95a9-00e08161165f}
+ */
+#define SPAR_VNIC_CHANNEL_PROTOCOL_UUID \
+ UUID_LE(0x8cd5994d, 0xc58e, 0x11da, \
+ 0x95, 0xa9, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f)
+static const uuid_le spar_vnic_channel_protocol_uuid =
+ SPAR_VNIC_CHANNEL_PROTOCOL_UUID;
+
+/* Used in IOChannel
+ * {72120008-4AAB-11DC-8530-444553544200}
+ */
+#define SPAR_SIOVM_UUID \
+ UUID_LE(0x72120008, 0x4AAB, 0x11DC, \
+ 0x85, 0x30, 0x44, 0x45, 0x53, 0x54, 0x42, 0x00)
+static const uuid_le spar_siovm_uuid = SPAR_SIOVM_UUID;
+
+/* Used in visornoop/visornoop_main.c
+ * {5b52c5ac-e5f5-4d42-8dff-429eaecd221f}
+ */
+#define SPAR_CONTROLDIRECTOR_CHANNEL_PROTOCOL_UUID \
+ UUID_LE(0x5b52c5ac, 0xe5f5, 0x4d42, \
+ 0x8d, 0xff, 0x42, 0x9e, 0xae, 0xcd, 0x22, 0x1f)
+
+static const uuid_le spar_controldirector_channel_protocol_uuid =
+ SPAR_CONTROLDIRECTOR_CHANNEL_PROTOCOL_UUID;
+
+/* Used in visorchipset/visorchipset_main.c
+ * {B4E79625-AEDE-4EAA-9E11-D3EDDCD4504C}
+ */
+#define SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID \
+ UUID_LE(0xb4e79625, 0xaede, 0x4eaa, \
+ 0x9e, 0x11, 0xd3, 0xed, 0xdc, 0xd4, 0x50, 0x4c)
diff --git a/drivers/staging/unisys/visorbus/controlvmchannel.h b/drivers/staging/unisys/visorbus/controlvmchannel.h
new file mode 100644
index 0000000..a50d9cf
--- /dev/null
+++ b/drivers/staging/unisys/visorbus/controlvmchannel.h
@@ -0,0 +1,485 @@
+/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
+ * All rights reserved.
+ *
+ * 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 of the License, 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ */
+
+#ifndef __CONTROLVMCHANNEL_H__
+#define __CONTROLVMCHANNEL_H__
+
+#include <linux/uuid.h>
+#include "channel.h"
+
+/* {2B3C2D10-7EF5-4ad8-B966-3448B7386B3D} */
+#define SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID \
+ UUID_LE(0x2b3c2d10, 0x7ef5, 0x4ad8, \
+ 0xb9, 0x66, 0x34, 0x48, 0xb7, 0x38, 0x6b, 0x3d)
+
+#define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE \
+ ULTRA_CHANNEL_PROTOCOL_SIGNATURE
+#define CONTROLVM_MESSAGE_MAX 64
+
+/* 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.
+ */
+#define ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID 1
+
+#define SPAR_CONTROLVM_CHANNEL_OK_CLIENT(ch) \
+ spar_check_channel_client(ch, \
+ SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID, \
+ "controlvm", \
+ sizeof(struct spar_controlvm_channel_protocol), \
+ ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID, \
+ ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE)
+
+#define MAX_SERIAL_NUM 32
+
+/* Defines for various channel queues */
+#define CONTROLVM_QUEUE_REQUEST 0
+#define CONTROLVM_QUEUE_RESPONSE 1
+#define CONTROLVM_QUEUE_EVENT 2
+#define CONTROLVM_QUEUE_ACK 3
+
+/* Max num of messages stored during IOVM creation to be reused after crash */
+#define CONTROLVM_CRASHMSG_MAX 2
+
+struct spar_segment_state {
+ u16 enabled:1; /* Bit 0: May enter other states */
+ u16 active:1; /* Bit 1: Assigned to active partition */
+ u16 alive:1; /* Bit 2: Configure message sent to
+ * service/server */
+ u16 revoked:1; /* Bit 3: similar to partition state
+ * ShuttingDown */
+ u16 allocated:1; /* Bit 4: memory (device/port number)
+ * has been selected by Command */
+ u16 known:1; /* Bit 5: has been introduced to the
+ * service/guest partition */
+ u16 ready:1; /* Bit 6: service/Guest partition has
+ * responded to introduction */
+ u16 operating:1; /* Bit 7: resource is configured and
+ * operating */
+ /* Note: don't use high bit unless we need to switch to ushort
+ * which is non-compliant */
+};
+
+static const struct spar_segment_state segment_state_running = {
+ 1, 1, 1, 0, 1, 1, 1, 1
+};
+
+static const struct spar_segment_state segment_state_paused = {
+ 1, 1, 1, 0, 1, 1, 1, 0
+};
+
+static const struct spar_segment_state segment_state_standby = {
+ 1, 1, 0, 0, 1, 1, 1, 0
+};
+
+/* Ids for commands that may appear in either queue of a ControlVm channel.
+ *
+ * Commands that are initiated by the command partition (CP), by an IO or
+ * console service partition (SP), or by a guest partition (GP)are:
+ * - issued on the RequestQueue queue (q #0) in the ControlVm channel
+ * - responded to on the ResponseQueue queue (q #1) in the ControlVm channel
+ *
+ * Events that are initiated by an IO or console service partition (SP) or
+ * by a guest partition (GP) are:
+ * - issued on the EventQueue queue (q #2) in the ControlVm channel
+ * - responded to on the EventAckQueue queue (q #3) in the ControlVm channel
+ */
+enum controlvm_id {
+ CONTROLVM_INVALID = 0,
+ /* SWITCH commands required Parameter: SwitchNumber */
+ /* BUS commands required Parameter: BusNumber */
+ CONTROLVM_BUS_CREATE = 0x101, /* CP --> SP, GP */
+ CONTROLVM_BUS_DESTROY = 0x102, /* CP --> SP, GP */
+ CONTROLVM_BUS_CONFIGURE = 0x104, /* CP --> SP */
+ CONTROLVM_BUS_CHANGESTATE = 0x105, /* CP --> SP, GP */
+ CONTROLVM_BUS_CHANGESTATE_EVENT = 0x106, /* SP, GP --> CP */
+/* DEVICE commands required Parameter: BusNumber, DeviceNumber */
+
+ CONTROLVM_DEVICE_CREATE = 0x201, /* CP --> SP, GP */
+ CONTROLVM_DEVICE_DESTROY = 0x202, /* CP --> SP, GP */
+ CONTROLVM_DEVICE_CONFIGURE = 0x203, /* CP --> SP */
+ CONTROLVM_DEVICE_CHANGESTATE = 0x204, /* CP --> SP, GP */
+ CONTROLVM_DEVICE_CHANGESTATE_EVENT = 0x205, /* SP, GP --> CP */
+ CONTROLVM_DEVICE_RECONFIGURE = 0x206, /* CP --> Boot */
+/* CHIPSET commands */
+ CONTROLVM_CHIPSET_INIT = 0x301, /* CP --> SP, GP */
+ CONTROLVM_CHIPSET_STOP = 0x302, /* CP --> SP, GP */
+ CONTROLVM_CHIPSET_READY = 0x304, /* CP --> SP */
+ CONTROLVM_CHIPSET_SELFTEST = 0x305, /* CP --> SP */
+
+};
+
+struct irq_info {
+ u64 reserved1;
+
+ /* specifies interrupt handle. It is used to retrieve the
+ * corresponding interrupt pin from Monitor; and the
+ * interrupt pin is used to connect to the corresponding
+ * interrupt. Used by IOPart-GP only.
+ */
+ u64 recv_irq_handle;
+
+ /* specifies interrupt vector. It, interrupt pin, and shared are
+ * used to connect to the corresponding interrupt. Used by
+ * IOPart-GP only.
+ */
+ u32 recv_irq_vector;
+
+ /* specifies if the recvInterrupt is shared. It, interrupt pin
+ * and vector are used to connect to 0 = not shared; 1 = shared.
+ * the corresponding interrupt. Used by IOPart-GP only.
+ */
+ u8 recv_irq_shared;
+ u8 reserved[3]; /* Natural alignment purposes */
+};
+
+struct pci_id {
+ u16 domain;
+ u8 bus;
+ u8 slot;
+ u8 func;
+ u8 reserved[3]; /* Natural alignment purposes */
+};
+
+struct efi_spar_indication {
+ u64 boot_to_fw_ui:1; /* Bit 0: Stop in uefi ui */
+ u64 clear_nvram:1; /* Bit 1: Clear NVRAM */
+ u64 clear_cmos:1; /* Bit 2: Clear CMOS */
+ u64 boot_to_tool:1; /* Bit 3: Run install tool */
+ /* remaining bits are available */
+};
+
+enum ultra_chipset_feature {
+ ULTRA_CHIPSET_FEATURE_REPLY = 0x00000001,
+ ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG = 0x00000002,
+};
+
+/* This is the common structure that is at the beginning of every
+ * ControlVm message (both commands and responses) in any ControlVm
+ * queue. Commands are easily distinguished from responses by
+ * looking at the flags.response field.
+ */
+struct controlvm_message_header {
+ u32 id; /* See CONTROLVM_ID. */
+ /* For requests, indicates the message type. */
+ /* For responses, indicates the type of message we are responding to. */
+
+ u32 message_size; /* Includes size of this struct + size
+ * of message */
+ u32 segment_index; /* Index of segment containing Vm
+ * message/information */
+ u32 completion_status; /* Error status code or result of
+ * message completion */
+ struct {
+ u32 failed:1; /* =1 in a response to * signify
+ * failure */
+ u32 response_expected:1; /* =1 in all messages that expect a
+ * response (Control ignores this
+ * bit) */
+ u32 server:1; /* =1 in all bus & device-related
+ * messages where the message
+ * receiver is to act as the bus or
+ * device server */
+ u32 test_message:1; /* =1 for testing use only
+ * (Control and Command ignore this
+ * bit) */
+ u32 partial_completion:1; /* =1 if there are forthcoming
+ * responses/acks associated
+ * with this message */
+ u32 preserve:1; /* =1 this is to let us know to
+ * preserve channel contents
+ * (for running guests)*/
+ u32 writer_in_diag:1; /* =1 the DiagWriter is active in the
+ * Diagnostic Partition*/
+ } flags;
+ u32 reserved; /* Natural alignment */
+ u64 message_handle; /* Identifies the particular message instance,
+ * and is used to match particular */
+ /* request instances with the corresponding response instance. */
+ u64 payload_vm_offset; /* Offset of payload area from start of this
+ * instance of ControlVm segment */
+ u32 payload_max_bytes; /* Maximum bytes allocated in payload
+ * area of ControlVm segment */
+ u32 payload_bytes; /* Actual number of bytes of payload
+ * area to copy between IO/Command; */
+ /* if non-zero, there is a payload to copy. */
+};
+
+struct controlvm_packet_device_create {
+ u32 bus_no; /* bus # (0..n-1) from the msg receiver's end */
+ u32 dev_no; /* bus-relative (0..n-1) device number */
+ u64 channel_addr; /* Guest physical address of the channel, which
+ * can be dereferenced by the receiver of this
+ * ControlVm command */
+ u64 channel_bytes; /* specifies size of the channel in bytes */
+ uuid_le data_type_uuid; /* specifies format of data in channel */
+ uuid_le dev_inst_uuid; /* instance guid for the device */
+ struct irq_info intr; /* specifies interrupt information */
+}; /* for CONTROLVM_DEVICE_CREATE */
+
+struct controlvm_packet_device_configure {
+ u32 bus_no; /* bus # (0..n-1) from the msg
+ * receiver's perspective */
+ /* Control uses header SegmentIndex field to access bus number... */
+ u32 dev_no; /* bus-relative (0..n-1) device number */
+} ; /* for CONTROLVM_DEVICE_CONFIGURE */
+
+struct controlvm_message_device_create {
+ struct controlvm_message_header header;
+ struct controlvm_packet_device_create packet;
+}; /* total 128 bytes */
+
+struct controlvm_message_device_configure {
+ struct controlvm_message_header header;
+ struct controlvm_packet_device_configure packet;
+}; /* total 56 bytes */
+
+/* This is the format for a message in any ControlVm queue. */
+struct controlvm_message_packet {
+ union {
+ struct {
+ u32 bus_no; /* bus # (0..n-1) from the msg
+ * receiver's perspective */
+ u32 dev_count; /* indicates the max number of
+ * devices on this bus */
+ u64 channel_addr; /* Guest physical address of
+ * the channel, which can be
+ * dereferenced by the receiver
+ * of this ControlVm command */
+ u64 channel_bytes; /* size of the channel */
+ uuid_le bus_data_type_uuid; /* indicates format of
+ * data in bus channel*/
+ uuid_le bus_inst_uuid; /* instance uuid for the bus */
+ } create_bus; /* for CONTROLVM_BUS_CREATE */
+ struct {
+ u32 bus_no; /* bus # (0..n-1) from the msg
+ * receiver's perspective */
+ u32 reserved; /* Natural alignment purposes */
+ } destroy_bus; /* for CONTROLVM_BUS_DESTROY */
+ struct {
+ u32 bus_no; /* bus # (0..n-1) from the receiver's
+ * perspective */
+ u32 reserved1; /* for alignment purposes */
+ u64 guest_handle; /* This is used to convert
+ * guest physical address to
+ * physical address */
+ u64 recv_bus_irq_handle;
+ /* specifies interrupt info. It is used by SP
+ * to register to receive interrupts from the
+ * CP. This interrupt is used for bus level
+ * notifications. The corresponding
+ * sendBusInterruptHandle is kept in CP. */
+ } configure_bus; /* for CONTROLVM_BUS_CONFIGURE */
+ /* for CONTROLVM_DEVICE_CREATE */
+ struct controlvm_packet_device_create create_device;
+ struct {
+ u32 bus_no; /* bus # (0..n-1) from the msg
+ * receiver's perspective */
+ u32 dev_no; /* bus-relative (0..n-1) device # */
+ } destroy_device; /* for CONTROLVM_DEVICE_DESTROY */
+ /* for CONTROLVM_DEVICE_CONFIGURE */
+ struct controlvm_packet_device_configure configure_device;
+ struct {
+ u32 bus_no; /* bus # (0..n-1) from the msg
+ * receiver's perspective */
+ u32 dev_no; /* bus-relative (0..n-1) device # */
+ } reconfigure_device; /* for CONTROLVM_DEVICE_RECONFIGURE */
+ struct {
+ u32 bus_no;
+ struct spar_segment_state state;
+ u8 reserved[2]; /* Natural alignment purposes */
+ } bus_change_state; /* for CONTROLVM_BUS_CHANGESTATE */
+ struct {
+ u32 bus_no;
+ u32 dev_no;
+ struct spar_segment_state state;
+ struct {
+ u32 phys_device:1; /* =1 if message is for
+ * a physical device */
+ } flags;
+ u8 reserved[2]; /* Natural alignment purposes */
+ } device_change_state; /* for CONTROLVM_DEVICE_CHANGESTATE */
+ struct {
+ u32 bus_no;
+ u32 dev_no;
+ struct spar_segment_state state;
+ u8 reserved[6]; /* Natural alignment purposes */
+ } device_change_state_event;
+ /* for CONTROLVM_DEVICE_CHANGESTATE_EVENT */
+ struct {
+ u32 bus_count; /* indicates the max number of busses */
+ u32 switch_count; /* indicates the max number of
+ * switches if a service partition */
+ enum ultra_chipset_feature features;
+ u32 platform_number; /* Platform Number */
+ } init_chipset; /* for CONTROLVM_CHIPSET_INIT */
+ struct {
+ u32 options; /* reserved */
+ u32 test; /* bit 0 set to run embedded selftest */
+ } chipset_selftest; /* for CONTROLVM_CHIPSET_SELFTEST */
+ u64 addr; /* a physical address of something, that can be
+ * dereferenced by the receiver of this
+ * ControlVm command (depends on command id) */
+ u64 handle; /* a handle of something (depends on command
+ * id) */
+ };
+};
+
+/* All messages in any ControlVm queue have this layout. */
+struct controlvm_message {
+ struct controlvm_message_header hdr;
+ struct controlvm_message_packet cmd;
+};
+
+struct spar_controlvm_channel_protocol {
+ struct channel_header header;
+ u64 gp_controlvm; /* guest phys addr of this channel */
+ u64 gp_partition_tables;/* guest phys addr of partition tables */
+ u64 gp_diag_guest; /* guest phys addr of diagnostic channel */
+ u64 gp_boot_romdisk;/* guest phys addr of (read* only) Boot ROM disk */
+ u64 gp_boot_ramdisk;/* guest phys addr of writable Boot RAM disk */
+ u64 gp_acpi_table; /* guest phys addr of acpi table */
+ u64 gp_control_channel;/* guest phys addr of control channel */
+ u64 gp_diag_romdisk;/* guest phys addr of diagnostic ROM disk */
+ u64 gp_nvram; /* guest phys addr of NVRAM channel */
+ u64 request_payload_offset; /* Offset to request payload area */
+ u64 event_payload_offset; /* Offset to event payload area */
+ u32 request_payload_bytes; /* Bytes available in request payload
+ * area */
+ u32 event_payload_bytes;/* Bytes available in event payload area */
+ u32 control_channel_bytes;
+ u32 nvram_channel_bytes; /* Bytes in PartitionNvram segment */
+ u32 message_bytes; /* sizeof(CONTROLVM_MESSAGE) */
+ u32 message_count; /* CONTROLVM_MESSAGE_MAX */
+ u64 gp_smbios_table; /* guest phys addr of SMBIOS tables */
+ u64 gp_physical_smbios_table; /* guest phys addr of SMBIOS table */
+ /* ULTRA_MAX_GUESTS_PER_SERVICE */
+ char gp_reserved[2688];
+
+ /* guest physical address of EFI firmware image base */
+ u64 virtual_guest_firmware_image_base;
+
+ /* guest physical address of EFI firmware entry point */
+ u64 virtual_guest_firmware_entry_point;
+
+ /* guest EFI firmware image size */
+ u64 virtual_guest_firmware_image_size;
+
+ /* GPA = 1MB where EFI firmware image is copied to */
+ u64 virtual_guest_firmware_boot_base;
+ u64 virtual_guest_image_base;
+ u64 virtual_guest_image_size;
+ u64 prototype_control_channel_offset;
+ u64 virtual_guest_partition_handle;
+
+ u16 restore_action; /* Restore Action field to restore the guest
+ * partition */
+ u16 dump_action; /* For Windows guests it shows if the visordisk
+ * is running in dump mode */
+ u16 nvram_fail_count;
+ u16 saved_crash_message_count; /* = CONTROLVM_CRASHMSG_MAX */
+ u32 saved_crash_message_offset; /* Offset to request payload area needed
+ * for crash dump */
+ u32 installation_error; /* Type of error encountered during
+ * installation */
+ u32 installation_text_id; /* Id of string to display */
+ u16 installation_remaining_steps;/* Number of remaining installation
+ * steps (for progress bars) */
+ u8 tool_action; /* ULTRA_TOOL_ACTIONS Installation Action
+ * field */
+ u8 reserved; /* alignment */
+ struct efi_spar_indication efi_spar_ind;
+ struct efi_spar_indication efi_spar_ind_supported;
+ u32 sp_reserved;
+ u8 reserved2[28]; /* Force signals to begin on 128-byte cache
+ * line */
+ struct signal_queue_header request_queue;/* Service or guest partition
+ * uses this queue to send
+ * requests to Control */
+ struct signal_queue_header response_queue;/* Control uses this queue to
+ * respond to service or guest
+ * partition requests */
+ struct signal_queue_header event_queue; /* Control uses this queue to
+ * send events to service or
+ * guest partition */
+ struct signal_queue_header event_ack_queue;/* Service or guest partition
+ * uses this queue to ack
+ * Control events */
+
+ /* Request fixed-size message pool - does not include payload */
+ struct controlvm_message request_msg[CONTROLVM_MESSAGE_MAX];
+
+ /* Response fixed-size message pool - does not include payload */
+ struct controlvm_message response_msg[CONTROLVM_MESSAGE_MAX];
+
+ /* Event fixed-size message pool - does not include payload */
+ struct controlvm_message event_msg[CONTROLVM_MESSAGE_MAX];
+
+ /* Ack fixed-size message pool - does not include payload */
+ struct controlvm_message event_ack_msg[CONTROLVM_MESSAGE_MAX];
+
+ /* Message stored during IOVM creation to be reused after crash */
+ struct controlvm_message saved_crash_msg[CONTROLVM_CRASHMSG_MAX];
+};
+
+/* Offsets for VM channel attributes */
+#define VM_CH_REQ_QUEUE_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, request_queue)
+#define VM_CH_RESP_QUEUE_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, response_queue)
+#define VM_CH_EVENT_QUEUE_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, event_queue)
+#define VM_CH_ACK_QUEUE_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, event_ack_queue)
+#define VM_CH_REQ_MSG_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, request_msg)
+#define VM_CH_RESP_MSG_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, response_msg)
+#define VM_CH_EVENT_MSG_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, event_msg)
+#define VM_CH_ACK_MSG_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, event_ack_msg)
+#define VM_CH_CRASH_MSG_OFFSET \
+ offsetof(struct spar_controlvm_channel_protocol, saved_crash_msg)
+
+/* The following header will be located at the beginning of PayloadVmOffset for
+ * various ControlVm commands. The receiver of a ControlVm command with a
+ * PayloadVmOffset will dereference this address and then use connection_offset,
+ * initiator_offset, and target_offset to get the location of UTF-8 formatted
+ * strings that can be parsed to obtain command-specific information. The value
+ * of total_length should equal PayloadBytes. The format of the strings at
+ * PayloadVmOffset will take different forms depending on the message.
+ */
+struct spar_controlvm_parameters_header {
+ u32 total_length;
+ u32 header_length;
+ u32 connection_offset;
+ u32 connection_length;
+ u32 initiator_offset;
+ u32 initiator_length;
+ u32 target_offset;
+ u32 target_length;
+ u32 client_offset;
+ u32 client_length;
+ u32 name_offset;
+ u32 name_length;
+ uuid_le id;
+ u32 revision;
+ u32 reserved; /* Natural alignment */
+};
+
+#endif /* __CONTROLVMCHANNEL_H__ */
--
2.1.4
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