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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-02-26 14:41:00 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-02-26 14:41:00 +1100
commit874f2f997dbe041a6c6e509dae8656ed9022d65d (patch)
tree61898165882041ef7f9beaf2ef6663a1a4d3c29a /include/linux
parent071c06cb570d38efe23a124e885f2f3e643a9206 (diff)
parent6ebdc661b608671e9ca572af8bb42d58108cc008 (diff)
downloadtalos-obmc-linux-874f2f997dbe041a6c6e509dae8656ed9022d65d.tar.gz
talos-obmc-linux-874f2f997dbe041a6c6e509dae8656ed9022d65d.zip
Merge commit 'origin/master' into next
Manual merge of: drivers/char/hvc_console.c drivers/char/hvc_console.h
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/amba/bus.h6
-rw-r--r--include/linux/blkdev.h4
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/hid.h5
-rw-r--r--include/linux/input.h43
-rw-r--r--include/linux/kfifo.h2
-rw-r--r--include/linux/of.h62
-rw-r--r--include/linux/of_fdt.h75
-rw-r--r--include/linux/spi/dw_spi.h5
-rw-r--r--include/linux/virtio.h4
-rw-r--r--include/linux/virtio_balloon.h15
-rw-r--r--include/linux/virtio_blk.h13
-rw-r--r--include/linux/virtio_console.h30
13 files changed, 209 insertions, 57 deletions
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index ab94335b4bb9..6816be6c3f77 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -1,5 +1,9 @@
/*
- * linux/include/asm-arm/hardware/amba.h
+ * linux/include/amba/bus.h
+ *
+ * This device type deals with ARM PrimeCells and anything else that
+ * presents a proper CID (0xB105F00D) at the end of the I/O register
+ * region or that is derived from a PrimeCell.
*
* Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
*
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5c8018977efa..1896e868854f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -461,8 +461,7 @@ struct request_queue
#define QUEUE_FLAG_NONROT 14 /* non-rotational device (SSD) */
#define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */
#define QUEUE_FLAG_IO_STAT 15 /* do IO stats */
-#define QUEUE_FLAG_CQ 16 /* hardware does queuing */
-#define QUEUE_FLAG_DISCARD 17 /* supports DISCARD */
+#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_CLUSTER) | \
@@ -586,7 +585,6 @@ enum {
#define blk_queue_plugged(q) test_bit(QUEUE_FLAG_PLUGGED, &(q)->queue_flags)
#define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
-#define blk_queue_queuing(q) test_bit(QUEUE_FLAG_CQ, &(q)->queue_flags)
#define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
#define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
#define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b1bcb275b596..ebb1cd5bc241 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -729,6 +729,7 @@ struct inode {
uid_t i_uid;
gid_t i_gid;
dev_t i_rdev;
+ unsigned int i_blkbits;
u64 i_version;
loff_t i_size;
#ifdef __NEED_I_SIZE_ORDERED
@@ -738,7 +739,6 @@ struct inode {
struct timespec i_mtime;
struct timespec i_ctime;
blkcnt_t i_blocks;
- unsigned int i_blkbits;
unsigned short i_bytes;
umode_t i_mode;
spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 87093652dda8..b1344ec4b7fc 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -501,7 +501,7 @@ struct hid_device { /* device report descriptor */
void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
/* handler for raw output data, used by hidraw */
- int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t);
+ int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t, unsigned char);
/* debugging support via debugfs */
unsigned short debug;
@@ -663,7 +663,7 @@ struct hid_ll_driver {
/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
/* We ignore a few input applications that are not widely used */
-#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || (a == 0x000d0002))
+#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006)))
/* HID core API */
@@ -690,6 +690,7 @@ int hid_input_report(struct hid_device *, int type, u8 *, int, int);
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
void hid_output_report(struct hid_report *report, __u8 *data);
struct hid_device *hid_allocate_device(void);
+struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
int hid_check_keys_pressed(struct hid_device *hid);
int hid_connect(struct hid_device *hid, unsigned int connect_mask);
diff --git a/include/linux/input.h b/include/linux/input.h
index 735ceaf1bc2d..f44ee9114401 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -376,6 +376,7 @@ struct input_absinfo {
#define KEY_DISPLAY_OFF 245 /* display device to off state */
#define KEY_WIMAX 246
+#define KEY_RFKILL 247 /* Key that controls all radios */
/* Range 248 - 255 is reserved for special needs of AT keyboard driver */
@@ -597,6 +598,48 @@ struct input_absinfo {
#define KEY_CAMERA_FOCUS 0x210
+#define BTN_TRIGGER_HAPPY 0x2c0
+#define BTN_TRIGGER_HAPPY1 0x2c0
+#define BTN_TRIGGER_HAPPY2 0x2c1
+#define BTN_TRIGGER_HAPPY3 0x2c2
+#define BTN_TRIGGER_HAPPY4 0x2c3
+#define BTN_TRIGGER_HAPPY5 0x2c4
+#define BTN_TRIGGER_HAPPY6 0x2c5
+#define BTN_TRIGGER_HAPPY7 0x2c6
+#define BTN_TRIGGER_HAPPY8 0x2c7
+#define BTN_TRIGGER_HAPPY9 0x2c8
+#define BTN_TRIGGER_HAPPY10 0x2c9
+#define BTN_TRIGGER_HAPPY11 0x2ca
+#define BTN_TRIGGER_HAPPY12 0x2cb
+#define BTN_TRIGGER_HAPPY13 0x2cc
+#define BTN_TRIGGER_HAPPY14 0x2cd
+#define BTN_TRIGGER_HAPPY15 0x2ce
+#define BTN_TRIGGER_HAPPY16 0x2cf
+#define BTN_TRIGGER_HAPPY17 0x2d0
+#define BTN_TRIGGER_HAPPY18 0x2d1
+#define BTN_TRIGGER_HAPPY19 0x2d2
+#define BTN_TRIGGER_HAPPY20 0x2d3
+#define BTN_TRIGGER_HAPPY21 0x2d4
+#define BTN_TRIGGER_HAPPY22 0x2d5
+#define BTN_TRIGGER_HAPPY23 0x2d6
+#define BTN_TRIGGER_HAPPY24 0x2d7
+#define BTN_TRIGGER_HAPPY25 0x2d8
+#define BTN_TRIGGER_HAPPY26 0x2d9
+#define BTN_TRIGGER_HAPPY27 0x2da
+#define BTN_TRIGGER_HAPPY28 0x2db
+#define BTN_TRIGGER_HAPPY29 0x2dc
+#define BTN_TRIGGER_HAPPY30 0x2dd
+#define BTN_TRIGGER_HAPPY31 0x2de
+#define BTN_TRIGGER_HAPPY32 0x2df
+#define BTN_TRIGGER_HAPPY33 0x2e0
+#define BTN_TRIGGER_HAPPY34 0x2e1
+#define BTN_TRIGGER_HAPPY35 0x2e2
+#define BTN_TRIGGER_HAPPY36 0x2e3
+#define BTN_TRIGGER_HAPPY37 0x2e4
+#define BTN_TRIGGER_HAPPY38 0x2e5
+#define BTN_TRIGGER_HAPPY39 0x2e6
+#define BTN_TRIGGER_HAPPY40 0x2e7
+
/* We avoid low common keys in module aliases so they don't get huge. */
#define KEY_MIN_INTERESTING KEY_MUTE
#define KEY_MAX 0x2ff
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 6f6c5f300af6..bc0fc795bd35 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -124,7 +124,7 @@ extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo,
*/
static inline bool kfifo_initialized(struct kfifo *fifo)
{
- return fifo->buffer != 0;
+ return fifo->buffer != NULL;
}
/**
diff --git a/include/linux/of.h b/include/linux/of.h
index e7facd8fbce8..f6d9cbc39c9c 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -19,6 +19,11 @@
#include <linux/bitops.h>
#include <linux/kref.h>
#include <linux/mod_devicetable.h>
+#include <linux/spinlock.h>
+
+#include <asm/byteorder.h>
+
+#ifdef CONFIG_OF
typedef u32 phandle;
typedef u32 ihandle;
@@ -39,10 +44,7 @@ struct of_irq_controller;
struct device_node {
const char *name;
const char *type;
- phandle node;
-#if !defined(CONFIG_SPARC)
- phandle linux_phandle;
-#endif
+ phandle phandle;
char *full_name;
struct property *properties;
@@ -63,6 +65,11 @@ struct device_node {
#endif
};
+/* Pointer for first entry in chain of all nodes. */
+extern struct device_node *allnodes;
+extern struct device_node *of_chosen;
+extern rwlock_t devtree_lock;
+
static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
{
return test_bit(flag, &n->_flags);
@@ -73,12 +80,6 @@ static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
set_bit(flag, &n->_flags);
}
-static inline void
-set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
-{
- dn->pde = de;
-}
-
extern struct device_node *of_find_all_nodes(struct device_node *prev);
#if defined(CONFIG_SPARC)
@@ -101,26 +102,36 @@ extern void of_node_put(struct device_node *node);
*/
/* Helper to read a big number; size is in cells (not bytes) */
-static inline u64 of_read_number(const u32 *cell, int size)
+static inline u64 of_read_number(const __be32 *cell, int size)
{
u64 r = 0;
while (size--)
- r = (r << 32) | *(cell++);
+ r = (r << 32) | be32_to_cpu(*(cell++));
return r;
}
/* Like of_read_number, but we want an unsigned long result */
-#ifdef CONFIG_PPC32
-static inline unsigned long of_read_ulong(const u32 *cell, int size)
+static inline unsigned long of_read_ulong(const __be32 *cell, int size)
{
- return cell[size-1];
+ /* toss away upper bits if unsigned long is smaller than u64 */
+ return of_read_number(cell, size);
}
-#else
-#define of_read_ulong(cell, size) of_read_number(cell, size)
-#endif
#include <asm/prom.h>
+/* Default #address and #size cells. Allow arch asm/prom.h to override */
+#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
+#endif
+
+/* Default string compare functions, Allow arch asm/prom.h to override */
+#if !defined(of_compat_cmp)
+#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
+#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
+#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
+#endif
+
/* flag descriptions */
#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
#define OF_DETACHED 2 /* node has been detached from the device tree */
@@ -187,4 +198,19 @@ extern int of_parse_phandles_with_args(struct device_node *np,
const char *list_name, const char *cells_name, int index,
struct device_node **out_node, const void **out_args);
+extern int of_machine_is_compatible(const char *compat);
+
+extern int prom_add_property(struct device_node* np, struct property* prop);
+extern int prom_remove_property(struct device_node *np, struct property *prop);
+extern int prom_update_property(struct device_node *np,
+ struct property *newprop,
+ struct property *oldprop);
+
+#if defined(CONFIG_OF_DYNAMIC)
+/* For updating the device tree at runtime */
+extern void of_attach_node(struct device_node *);
+extern void of_detach_node(struct device_node *);
+#endif
+
+#endif /* CONFIG_OF */
#endif /* _LINUX_OF_H */
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 41d432b13553..a1ca92ccb0ff 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -42,45 +42,62 @@
* ends when size is 0
*/
struct boot_param_header {
- u32 magic; /* magic word OF_DT_HEADER */
- u32 totalsize; /* total size of DT block */
- u32 off_dt_struct; /* offset to structure */
- u32 off_dt_strings; /* offset to strings */
- u32 off_mem_rsvmap; /* offset to memory reserve map */
- u32 version; /* format version */
- u32 last_comp_version; /* last compatible version */
+ __be32 magic; /* magic word OF_DT_HEADER */
+ __be32 totalsize; /* total size of DT block */
+ __be32 off_dt_struct; /* offset to structure */
+ __be32 off_dt_strings; /* offset to strings */
+ __be32 off_mem_rsvmap; /* offset to memory reserve map */
+ __be32 version; /* format version */
+ __be32 last_comp_version; /* last compatible version */
/* version 2 fields below */
- u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
+ __be32 boot_cpuid_phys; /* Physical CPU id we're booting on */
/* version 3 fields below */
- u32 dt_strings_size; /* size of the DT strings block */
+ __be32 dt_strings_size; /* size of the DT strings block */
/* version 17 fields below */
- u32 dt_struct_size; /* size of the DT structure block */
+ __be32 dt_struct_size; /* size of the DT structure block */
};
+/* TBD: Temporary export of fdt globals - remove when code fully merged */
+extern int __initdata dt_root_addr_cells;
+extern int __initdata dt_root_size_cells;
+extern struct boot_param_header *initial_boot_params;
+
/* For scanning the flat device-tree at boot time */
-extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
- const char *uname, int depth,
- void *data),
- void *data);
-extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name,
- unsigned long *size);
-extern int __init of_flat_dt_is_compatible(unsigned long node,
- const char *name);
-extern unsigned long __init of_get_flat_dt_root(void);
+extern char *find_flat_dt_string(u32 offset);
+extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
+ int depth, void *data),
+ void *data);
+extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
+ unsigned long *size);
+extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
+extern unsigned long of_get_flat_dt_root(void);
+extern void early_init_dt_scan_chosen_arch(unsigned long node);
+extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
+ int depth, void *data);
+extern void early_init_dt_check_for_initrd(unsigned long node);
+extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
+ int depth, void *data);
+extern void early_init_dt_add_memory_arch(u64 base, u64 size);
+extern u64 early_init_dt_alloc_memory_arch(u64 size, u64 align);
+extern u64 dt_mem_next_cell(int s, __be32 **cellp);
+
+/*
+ * If BLK_DEV_INITRD, the fdt early init code will call this function,
+ * to be provided by the arch code. start and end are specified as
+ * physical addresses.
+ */
+#ifdef CONFIG_BLK_DEV_INITRD
+extern void early_init_dt_setup_initrd_arch(unsigned long start,
+ unsigned long end);
+#endif
+
+/* Early flat tree scan hooks */
+extern int early_init_dt_scan_root(unsigned long node, const char *uname,
+ int depth, void *data);
/* Other Prototypes */
-extern void finish_device_tree(void);
extern void unflatten_device_tree(void);
extern void early_init_devtree(void *);
-extern int machine_is_compatible(const char *compat);
-extern void print_properties(struct device_node *node);
-extern int prom_n_intr_cells(struct device_node* np);
-extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
-extern int prom_add_property(struct device_node* np, struct property* prop);
-extern int prom_remove_property(struct device_node *np, struct property *prop);
-extern int prom_update_property(struct device_node *np,
- struct property *newprop,
- struct property *oldprop);
#endif /* __ASSEMBLY__ */
#endif /* _LINUX_OF_FDT_H */
diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h
index 51b3e771a9a3..cc813f95a2f2 100644
--- a/include/linux/spi/dw_spi.h
+++ b/include/linux/spi/dw_spi.h
@@ -90,6 +90,7 @@ struct dw_spi {
unsigned long paddr;
u32 iolen;
int irq;
+ u32 fifo_len; /* depth of the FIFO buffer */
u32 max_freq; /* max bus freq supported */
u16 bus_num;
@@ -171,6 +172,10 @@ static inline void spi_chip_sel(struct dw_spi *dws, u16 cs)
{
if (cs > dws->num_cs)
return;
+
+ if (dws->cs_control)
+ dws->cs_control(1);
+
dw_writel(dws, ser, 1 << cs);
}
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 057a2e010758..f508c651e53d 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -51,6 +51,9 @@ struct virtqueue {
* This re-enables callbacks; it returns "false" if there are pending
* buffers in the queue, to detect a possible race between the driver
* checking for more work, and enabling callbacks.
+ * @detach_unused_buf: detach first unused buffer
+ * vq: the struct virtqueue we're talking about.
+ * Returns NULL or the "data" token handed to add_buf
*
* Locking rules are straightforward: the driver is responsible for
* locking. No two operations may be invoked simultaneously, with the exception
@@ -71,6 +74,7 @@ struct virtqueue_ops {
void (*disable_cb)(struct virtqueue *vq);
bool (*enable_cb)(struct virtqueue *vq);
+ void *(*detach_unused_buf)(struct virtqueue *vq);
};
/**
diff --git a/include/linux/virtio_balloon.h b/include/linux/virtio_balloon.h
index 1418f048cb34..a50ecd1b81a2 100644
--- a/include/linux/virtio_balloon.h
+++ b/include/linux/virtio_balloon.h
@@ -7,6 +7,7 @@
/* The feature bitmap for virtio balloon */
#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
+#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */
/* Size of a PFN in the balloon interface. */
#define VIRTIO_BALLOON_PFN_SHIFT 12
@@ -18,4 +19,18 @@ struct virtio_balloon_config
/* Number of pages we've actually got in balloon. */
__le32 actual;
};
+
+#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
+#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */
+#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */
+#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */
+#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */
+#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
+#define VIRTIO_BALLOON_S_NR 6
+
+struct virtio_balloon_stat {
+ u16 tag;
+ u64 val;
+} __attribute__((packed));
+
#endif /* _LINUX_VIRTIO_BALLOON_H */
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index fd294c56d571..e52029e98919 100644
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -15,6 +15,7 @@
#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */
+#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
struct virtio_blk_config {
/* The capacity (in 512-byte sectors). */
@@ -29,8 +30,20 @@ struct virtio_blk_config {
__u8 heads;
__u8 sectors;
} geometry;
+
/* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
__u32 blk_size;
+
+ /* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY */
+ /* exponent for physical block per logical block. */
+ __u8 physical_block_exp;
+ /* alignment offset in logical blocks. */
+ __u8 alignment_offset;
+ /* minimum I/O size without performance penalty in logical blocks. */
+ __u16 min_io_size;
+ /* optimal sustained I/O size in logical blocks. */
+ __u32 opt_io_size;
+
} __attribute__((packed));
/*
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h
index fe885174cc1f..ae4f039515b4 100644
--- a/include/linux/virtio_console.h
+++ b/include/linux/virtio_console.h
@@ -3,19 +3,45 @@
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
-/* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
- * anyone can use the definitions to implement compatible drivers/servers. */
+/*
+ * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
+ * anyone can use the definitions to implement compatible drivers/servers.
+ *
+ * Copyright (C) Red Hat, Inc., 2009, 2010
+ */
/* Feature bits */
#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */
+#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */
struct virtio_console_config {
/* colums of the screens */
__u16 cols;
/* rows of the screens */
__u16 rows;
+ /* max. number of ports this device can hold */
+ __u32 max_nr_ports;
+ /* number of ports added so far */
+ __u32 nr_ports;
} __attribute__((packed));
+/*
+ * A message that's passed between the Host and the Guest for a
+ * particular port.
+ */
+struct virtio_console_control {
+ __u32 id; /* Port number */
+ __u16 event; /* The kind of control event (see below) */
+ __u16 value; /* Extra information for the key */
+};
+
+/* Some events for control messages */
+#define VIRTIO_CONSOLE_PORT_READY 0
+#define VIRTIO_CONSOLE_CONSOLE_PORT 1
+#define VIRTIO_CONSOLE_RESIZE 2
+#define VIRTIO_CONSOLE_PORT_OPEN 3
+#define VIRTIO_CONSOLE_PORT_NAME 4
+#define VIRTIO_CONSOLE_PORT_REMOVE 5
#ifdef __KERNEL__
int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
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