-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
+/*
+ * Copyright (C) 2010 - 2013 UNISYS CORPORATION
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
#define VISOR_CHANNEL_SIGNATURE SIGNATURE_32('E', 'C', 'N', 'L')
+/*
+ * enum channel_serverstate
+ * @CHANNELSRV_UNINITIALIZED: Channel is in an undefined state.
+ * @CHANNELSRV_READY: Channel has been initialized by server.
+ */
enum channel_serverstate {
- CHANNELSRV_UNINITIALIZED = 0, /* channel is in an undefined state */
- CHANNELSRV_READY = 1 /* channel has been initialized by server */
+ CHANNELSRV_UNINITIALIZED = 0,
+ CHANNELSRV_READY = 1
};
+/*
+ * enum channel_clientstate
+ * @CHANNELCLI_DETACHED:
+ * @CHANNELCLI_DISABLED: Client can see channel but is NOT allowed to use it
+ * unless given TBD* explicit request
+ * (should actually be < DETACHED).
+ * @CHANNELCLI_ATTACHING: Legacy EFI client request for EFI server to attach.
+ * @CHANNELCLI_ATTACHED: Idle, but client may want to use channel any time.
+ * @CHANNELCLI_BUSY: Client either wants to use or is using channel.
+ * @CHANNELCLI_OWNED: "No worries" state - client can access channel
+ * anytime.
+ */
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 */
+ CHANNELCLI_DISABLED = 1,
+ CHANNELCLI_ATTACHING = 2,
+ CHANNELCLI_ATTACHED = 3,
+ CHANNELCLI_BUSY = 4,
+ CHANNELCLI_OWNED = 5
};
/* Values for VISORA_CHANNEL_PROTOCOL.CliErrorBoot: */
-/* throttling invalid boot channel statetransition error due to client
- * disabled
+
+/*
+ * Throttling invalid boot channel statetransition error due to client
+ * disabled.
*/
#define VISOR_CLIERRORBOOT_THROTTLEMSG_DISABLED 0x01
-/* throttling invalid boot channel statetransition error due to client
- * not attached
+/*
+ * Throttling invalid boot channel statetransition error due to client
+ * not attached.
*/
#define VISOR_CLIERRORBOOT_THROTTLEMSG_NOTATTACHED 0x02
-/* throttling invalid boot channel statetransition error due to busy channel */
+/* Throttling invalid boot channel statetransition error due to busy channel */
#define VISOR_CLIERRORBOOT_THROTTLEMSG_BUSY 0x04
-/* Values for VISOR_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
- * VISOR_VHBA_init_channel is called. All feature bits for all
- * channels should be defined here. The io channel feature bits are
- * defined right here
+/*
+ * Values for VISOR_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 VISOR_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 VISOR_DRIVER_ENABLES_INTS (0x1ULL << 1)
#define VISOR_CHANNEL_IS_POLLING (0x1ULL << 3)
#define VISOR_DRIVER_DISABLES_INTS (0x1ULL << 5)
#define VISOR_DRIVER_ENHANCED_RCVBUF_CHECKING (0x1ULL << 6)
-/* Common Channel Header */
+/*
+ * struct channel_header - Common Channel Header
+ * @signature: Signature.
+ * @legacy_state: DEPRECATED - being replaced by.
+ * @header_size: sizeof(struct channel_header).
+ * @size: Total size of this channel in bytes.
+ * @features: Flags to modify behavior.
+ * @chtype: Channel type: data, bus, control, etc..
+ * @partition_handle: ID of guest partition.
+ * @handle: Device number of this channel in client.
+ * @ch_space_offset: Offset in bytes to channel specific area.
+ * @version_id: Struct channel_header Version ID.
+ * @partition_index: Index of guest partition.
+ * @zone_uuid: Guid of Channel's zone.
+ * @cli_str_offset: Offset from channel header to null-terminated
+ * ClientString (0 if ClientString not present).
+ * @cli_state_boot: CHANNEL_CLIENTSTATE of pre-boot EFI client of this
+ * channel.
+ * @cmd_state_cli: CHANNEL_COMMANDSTATE (overloaded in Windows drivers, see
+ * ServerStateUp, ServerStateDown, etc).
+ * @cli_state_os: CHANNEL_CLIENTSTATE of Guest OS client of this channel.
+ * @ch_characteristic: CHANNEL_CHARACTERISTIC_<xxx>.
+ * @cmd_state_srv: CHANNEL_COMMANDSTATE (overloaded in Windows drivers, see
+ * ServerStateUp, ServerStateDown, etc).
+ * @srv_state: CHANNEL_SERVERSTATE.
+ * @cli_error_boot: Bits to indicate err states for boot clients, so err
+ * messages can be throttled.
+ * @cli_error_os: Bits to indicate err states for OS clients, so err
+ * messages can be throttled.
+ * @filler: Pad out to 128 byte cacheline.
+ * @recover_channel: Please add all new single-byte values below here.
+ */
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 */
+ u64 signature;
+ u32 legacy_state;
+ /* SrvState, CliStateBoot, and CliStateOS below */
+ u32 header_size;
+ u64 size;
+ u64 features;
+ uuid_le chtype;
+ u64 partition_handle;
+ u64 handle;
+ u64 ch_space_offset;
+ u32 version_id;
+ u32 partition_index;
+ uuid_le zone_uuid;
+ u32 cli_str_offset;
+ u32 cli_state_boot;
+ u32 cmd_state_cli;
+ u32 cli_state_os;
+ u32 ch_characteristic;
+ u32 cmd_state_srv;
+ u32 srv_state;
+ u8 cli_error_boot;
+ u8 cli_error_os;
+ u8 filler[1];
u8 recover_channel;
} __packed;
#define VISOR_CHANNEL_ENABLE_INTS (0x1ULL << 0)
-/* Subheader for the Signal Type variation of the Common Channel */
+/*
+ * struct signal_queue_header - Subheader for the Signal Type variation of the
+ * Common Channel.
+ * @version: SIGNAL_QUEUE_HEADER Version ID.
+ * @chtype: Queue type: storage, network.
+ * @size: Total size of this queue in bytes.
+ * @sig_base_offset: Offset to signal queue area.
+ * @features: Flags to modify behavior.
+ * @num_sent: Total # of signals placed in this queue.
+ * @num_overflows: Total # of inserts failed due to full queue.
+ * @signal_size: Total size of a signal for this queue.
+ * @max_slots: Max # of slots in queue, 1 slot is always empty.
+ * @max_signals: Max # of signals in queue (MaxSignalSlots-1).
+ * @head: Queue head signal #.
+ * @num_received: Total # of signals removed from this queue.
+ * @tail: Queue tail signal.
+ * @reserved1: Reserved field.
+ * @reserved2: Reserved field.
+ * @client_queue:
+ * @num_irq_received: Total # of Interrupts received. This is incremented by the
+ * ISR in the guest windows driver.
+ * @num_empty: Number of times that visor_signal_remove is called and
+ * returned Empty Status.
+ * @errorflags: Error bits set during SignalReinit to denote trouble with
+ * client's fields.
+ * @filler: Pad out to 64 byte cacheline.
+ */
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 # */
+ u32 version;
+ u32 chtype;
+ u64 size;
+ u64 sig_base_offset;
+ u64 features;
+ u64 num_sent;
+ u64 num_overflows;
+ u32 signal_size;
+ u32 max_slots;
+ u32 max_signals;
+ u32 head;
/* 2nd cache line */
- u64 num_received; /* Total # of signals removed from this queue */
- u32 tail; /* Queue tail signal */
- u32 reserved1; /* Reserved field */
- u64 reserved2; /* Reserved field */
+ u64 num_received;
+ u32 tail;
+ u32 reserved1;
+ u64 reserved2;
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 */
+ u64 num_irq_received;
+ u64 num_empty;
+ u32 errorflags;
+ u8 filler[12];
} __packed;
-/* Generic function useful for validating any type of channel when it is
+/*
+ * 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.
return 0;
}
}
- if (expected_min_bytes > 0) { /* verify channel size */
+ /* verify channel size */
+ if (expected_min_bytes > 0) {
if (ch->size < 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,
return 0;
}
}
- if (expected_version > 0) { /* verify channel version */
+ /* verify channel version */
+ if (expected_version > 0) {
if (ch->version_id != expected_version) {
pr_err("Channel mismatch on channel=%s(%pUL) field=version expected=0x%-8.8lx actual=0x%-8.8x\n",
chname, &expected_uuid,
return 0;
}
}
- if (expected_signature > 0) { /* verify channel signature */
+ /* verify channel signature */
+ if (expected_signature > 0) {
if (ch->signature != expected_signature) {
pr_err("Channel mismatch on channel=%s(%pUL) field=signature expected=0x%-8.8Lx actual=0x%-8.8Lx\n",
chname, &expected_uuid,
projects / platform / kernel / linux-rpi.git / commitdiff