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author | Rusty Russell <rusty@rustcorp.com.au> | 2007-07-19 01:49:23 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-19 10:04:52 -0700 |
commit | d7e28ffe6c74416b54345d6004fd0964c115b12c (patch) | |
tree | 844beb4f400d5400098538e0c1e5f12d20a9504a /include/linux | |
parent | 07ad157f6e5d228be78acd5cea0291e5d0360398 (diff) | |
download | linux-stable-d7e28ffe6c74416b54345d6004fd0964c115b12c.tar.gz linux-stable-d7e28ffe6c74416b54345d6004fd0964c115b12c.tar.bz2 linux-stable-d7e28ffe6c74416b54345d6004fd0964c115b12c.zip |
lguest: the host code
This is the code for the "lg.ko" module, which allows lguest guests to
be launched.
[akpm@linux-foundation.org: update for futex-new-private-futexes]
[akpm@linux-foundation.org: build fix]
[jmorris@namei.org: lguest: use hrtimers]
[akpm@linux-foundation.org: x86_64 build fix]
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/lguest.h | 12 | ||||
-rw-r--r-- | include/linux/lguest_launcher.h | 73 |
2 files changed, 79 insertions, 6 deletions
diff --git a/include/linux/lguest.h b/include/linux/lguest.h index f30c04fc22b7..500aace21ca7 100644 --- a/include/linux/lguest.h +++ b/include/linux/lguest.h @@ -3,11 +3,6 @@ #ifndef _ASM_LGUEST_H #define _ASM_LGUEST_H -/* These are randomly chosen numbers which indicate we're an lguest at boot */ -#define LGUEST_MAGIC_EBP 0x4C687970 -#define LGUEST_MAGIC_EDI 0x652D4D65 -#define LGUEST_MAGIC_ESI 0xFFFFFFFF - #ifndef __ASSEMBLY__ #include <asm/irq.h> @@ -20,7 +15,7 @@ #define LHCALL_LOAD_IDT_ENTRY 6 #define LHCALL_SET_STACK 7 #define LHCALL_TS 8 -#define LHCALL_TIMER_READ 9 +#define LHCALL_SET_CLOCKEVENT 9 #define LHCALL_HALT 10 #define LHCALL_GET_WALLCLOCK 11 #define LHCALL_BIND_DMA 12 @@ -29,6 +24,9 @@ #define LHCALL_SET_PMD 15 #define LHCALL_LOAD_TLS 16 +#define LG_CLOCK_MIN_DELTA 100UL +#define LG_CLOCK_MAX_DELTA ULONG_MAX + #define LGUEST_TRAP_ENTRY 0x1F static inline unsigned long @@ -75,6 +73,8 @@ struct lguest_data unsigned long reserve_mem; /* ID of this guest (used by network driver to set ethernet address) */ u16 guestid; + /* KHz for the TSC clock. */ + u32 tsc_khz; /* Fields initialized by the guest at boot: */ /* Instruction range to suppress interrupts even if enabled */ diff --git a/include/linux/lguest_launcher.h b/include/linux/lguest_launcher.h new file mode 100644 index 000000000000..0ba414a40c80 --- /dev/null +++ b/include/linux/lguest_launcher.h @@ -0,0 +1,73 @@ +#ifndef _ASM_LGUEST_USER +#define _ASM_LGUEST_USER +/* Everything the "lguest" userspace program needs to know. */ +/* They can register up to 32 arrays of lguest_dma. */ +#define LGUEST_MAX_DMA 32 +/* At most we can dma 16 lguest_dma in one op. */ +#define LGUEST_MAX_DMA_SECTIONS 16 + +/* How many devices? Assume each one wants up to two dma arrays per device. */ +#define LGUEST_MAX_DEVICES (LGUEST_MAX_DMA/2) + +struct lguest_dma +{ + /* 0 if free to be used, filled by hypervisor. */ + u32 used_len; + unsigned long addr[LGUEST_MAX_DMA_SECTIONS]; + u16 len[LGUEST_MAX_DMA_SECTIONS]; +}; + +struct lguest_block_page +{ + /* 0 is a read, 1 is a write. */ + int type; + u32 sector; /* Offset in device = sector * 512. */ + u32 bytes; /* Length expected to be read/written in bytes */ + /* 0 = pending, 1 = done, 2 = done, error */ + int result; + u32 num_sectors; /* Disk length = num_sectors * 512 */ +}; + +/* There is a shared page of these. */ +struct lguest_net +{ + /* Simply the mac address (with multicast bit meaning promisc). */ + unsigned char mac[6]; +}; + +/* Where the Host expects the Guest to SEND_DMA console output to. */ +#define LGUEST_CONSOLE_DMA_KEY 0 + +/* We have a page of these descriptors in the lguest_device page. */ +struct lguest_device_desc { + u16 type; +#define LGUEST_DEVICE_T_CONSOLE 1 +#define LGUEST_DEVICE_T_NET 2 +#define LGUEST_DEVICE_T_BLOCK 3 + + u16 features; +#define LGUEST_NET_F_NOCSUM 0x4000 /* Don't bother checksumming */ +#define LGUEST_DEVICE_F_RANDOMNESS 0x8000 /* IRQ is fairly random */ + + u16 status; +/* 256 and above are device specific. */ +#define LGUEST_DEVICE_S_ACKNOWLEDGE 1 /* We have seen device. */ +#define LGUEST_DEVICE_S_DRIVER 2 /* We have found a driver */ +#define LGUEST_DEVICE_S_DRIVER_OK 4 /* Driver says OK! */ +#define LGUEST_DEVICE_S_REMOVED 8 /* Device has gone away. */ +#define LGUEST_DEVICE_S_REMOVED_ACK 16 /* Driver has been told. */ +#define LGUEST_DEVICE_S_FAILED 128 /* Something actually failed */ + + u16 num_pages; + u32 pfn; +}; + +/* Write command first word is a request. */ +enum lguest_req +{ + LHREQ_INITIALIZE, /* + pfnlimit, pgdir, start, pageoffset */ + LHREQ_GETDMA, /* + addr (returns &lguest_dma, irq in ->used_len) */ + LHREQ_IRQ, /* + irq */ + LHREQ_BREAK, /* + on/off flag (on blocks until someone does off) */ +}; +#endif /* _ASM_LGUEST_USER */ |