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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-23 09:03:07 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-23 09:03:07 -0700
commit0d6810091cdbd05efeb31654c6a41a6cbdfdd2c8 (patch)
tree44d79f8133ea6acd791fe4f32188789c2c65da93 /include
parenta98ce5c6feead6bfedefabd46cb3d7f5be148d9a (diff)
parent43d33b21a03d3abcc8cbdeb4d52bc4568f822c5e (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest: (45 commits) Use "struct boot_params" in example launcher Loading bzImage directly. Revert lguest magic and use hook in head.S Update lguest documentation to reflect the new virtual block device name. generalize lgread_u32/lgwrite_u32. Example launcher handle guests not being ready for input Update example launcher for virtio Lguest support for Virtio Remove old lguest I/O infrrasructure. Remove old lguest bus and drivers. Virtio helper routines for a descriptor ringbuffer implementation Module autoprobing support for virtio drivers. Virtio console driver Block driver using virtio. Net driver using virtio Virtio interface Boot with virtual == physical to get closer to native Linux. Allow guest to specify syscall vector to use. Rename "cr3" to "gpgdir" to avoid x86-specific naming. Pagetables to use normal kernel types ...
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/Kbuild3
-rw-r--r--include/asm-x86/bootparam.h108
-rw-r--r--include/asm-x86/e820.h28
-rw-r--r--include/asm-x86/e820_32.h21
-rw-r--r--include/asm-x86/e820_64.h20
-rw-r--r--include/asm-x86/ist.h12
-rw-r--r--include/asm-x86/lguest.h86
-rw-r--r--include/asm-x86/lguest_hcall.h71
-rw-r--r--include/linux/Kbuild5
-rw-r--r--include/linux/apm_bios.h30
-rw-r--r--include/linux/edd.h137
-rw-r--r--include/linux/lguest.h80
-rw-r--r--include/linux/lguest_bus.h51
-rw-r--r--include/linux/lguest_launcher.h112
-rw-r--r--include/linux/mod_devicetable.h6
-rw-r--r--include/linux/screen_info.h81
-rw-r--r--include/linux/virtio.h110
-rw-r--r--include/linux/virtio_blk.h51
-rw-r--r--include/linux/virtio_config.h111
-rw-r--r--include/linux/virtio_console.h12
-rw-r--r--include/linux/virtio_net.h36
-rw-r--r--include/linux/virtio_ring.h119
-rw-r--r--include/video/Kbuild1
-rw-r--r--include/video/edid.h9
24 files changed, 867 insertions, 433 deletions
diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild
index 559830ece75..5e3539c129b 100644
--- a/include/asm-x86/Kbuild
+++ b/include/asm-x86/Kbuild
@@ -1,6 +1,7 @@
include include/asm-generic/Kbuild.asm
header-y += boot.h
+header-y += bootparam.h
header-y += debugreg.h
header-y += ldt.h
header-y += msr-index.h
@@ -14,8 +15,10 @@ unifdef-y += a.out_32.h
unifdef-y += a.out_64.h
unifdef-y += byteorder_32.h
unifdef-y += byteorder_64.h
+unifdef-y += e820.h
unifdef-y += elf_32.h
unifdef-y += elf_64.h
+unifdef-y += ist.h
unifdef-y += mce.h
unifdef-y += msgbuf_32.h
unifdef-y += msgbuf_64.h
diff --git a/include/asm-x86/bootparam.h b/include/asm-x86/bootparam.h
index dc031cf4463..19f3ddf2df4 100644
--- a/include/asm-x86/bootparam.h
+++ b/include/asm-x86/bootparam.h
@@ -10,85 +10,85 @@
#include <video/edid.h>
struct setup_header {
- u8 setup_sects;
- u16 root_flags;
- u32 syssize;
- u16 ram_size;
+ __u8 setup_sects;
+ __u16 root_flags;
+ __u32 syssize;
+ __u16 ram_size;
#define RAMDISK_IMAGE_START_MASK 0x07FF
#define RAMDISK_PROMPT_FLAG 0x8000
#define RAMDISK_LOAD_FLAG 0x4000
- u16 vid_mode;
- u16 root_dev;
- u16 boot_flag;
- u16 jump;
- u32 header;
- u16 version;
- u32 realmode_swtch;
- u16 start_sys;
- u16 kernel_version;
- u8 type_of_loader;
- u8 loadflags;
+ __u16 vid_mode;
+ __u16 root_dev;
+ __u16 boot_flag;
+ __u16 jump;
+ __u32 header;
+ __u16 version;
+ __u32 realmode_swtch;
+ __u16 start_sys;
+ __u16 kernel_version;
+ __u8 type_of_loader;
+ __u8 loadflags;
#define LOADED_HIGH (1<<0)
#define KEEP_SEGMENTS (1<<6)
#define CAN_USE_HEAP (1<<7)
- u16 setup_move_size;
- u32 code32_start;
- u32 ramdisk_image;
- u32 ramdisk_size;
- u32 bootsect_kludge;
- u16 heap_end_ptr;
- u16 _pad1;
- u32 cmd_line_ptr;
- u32 initrd_addr_max;
- u32 kernel_alignment;
- u8 relocatable_kernel;
- u8 _pad2[3];
- u32 cmdline_size;
- u32 hardware_subarch;
- u64 hardware_subarch_data;
+ __u16 setup_move_size;
+ __u32 code32_start;
+ __u32 ramdisk_image;
+ __u32 ramdisk_size;
+ __u32 bootsect_kludge;
+ __u16 heap_end_ptr;
+ __u16 _pad1;
+ __u32 cmd_line_ptr;
+ __u32 initrd_addr_max;
+ __u32 kernel_alignment;
+ __u8 relocatable_kernel;
+ __u8 _pad2[3];
+ __u32 cmdline_size;
+ __u32 hardware_subarch;
+ __u64 hardware_subarch_data;
} __attribute__((packed));
struct sys_desc_table {
- u16 length;
- u8 table[14];
+ __u16 length;
+ __u8 table[14];
};
struct efi_info {
- u32 _pad1;
- u32 efi_systab;
- u32 efi_memdesc_size;
- u32 efi_memdesc_version;
- u32 efi_memmap;
- u32 efi_memmap_size;
- u32 _pad2[2];
+ __u32 _pad1;
+ __u32 efi_systab;
+ __u32 efi_memdesc_size;
+ __u32 efi_memdesc_version;
+ __u32 efi_memmap;
+ __u32 efi_memmap_size;
+ __u32 _pad2[2];
};
/* The so-called "zeropage" */
struct boot_params {
struct screen_info screen_info; /* 0x000 */
struct apm_bios_info apm_bios_info; /* 0x040 */
- u8 _pad2[12]; /* 0x054 */
+ __u8 _pad2[12]; /* 0x054 */
struct ist_info ist_info; /* 0x060 */
- u8 _pad3[16]; /* 0x070 */
- u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
- u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
+ __u8 _pad3[16]; /* 0x070 */
+ __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
+ __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
struct sys_desc_table sys_desc_table; /* 0x0a0 */
- u8 _pad4[144]; /* 0x0b0 */
+ __u8 _pad4[144]; /* 0x0b0 */
struct edid_info edid_info; /* 0x140 */
struct efi_info efi_info; /* 0x1c0 */
- u32 alt_mem_k; /* 0x1e0 */
- u32 scratch; /* Scratch field! */ /* 0x1e4 */
- u8 e820_entries; /* 0x1e8 */
- u8 eddbuf_entries; /* 0x1e9 */
- u8 edd_mbr_sig_buf_entries; /* 0x1ea */
- u8 _pad6[6]; /* 0x1eb */
+ __u32 alt_mem_k; /* 0x1e0 */
+ __u32 scratch; /* Scratch field! */ /* 0x1e4 */
+ __u8 e820_entries; /* 0x1e8 */
+ __u8 eddbuf_entries; /* 0x1e9 */
+ __u8 edd_mbr_sig_buf_entries; /* 0x1ea */
+ __u8 _pad6[6]; /* 0x1eb */
struct setup_header hdr; /* setup header */ /* 0x1f1 */
- u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
- u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
+ __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
+ __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
struct e820entry e820_map[E820MAX]; /* 0x2d0 */
- u8 _pad8[48]; /* 0xcd0 */
+ __u8 _pad8[48]; /* 0xcd0 */
struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
- u8 _pad9[276]; /* 0xeec */
+ __u8 _pad9[276]; /* 0xeec */
} __attribute__((packed));
#endif /* _ASM_BOOTPARAM_H */
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 5d4d2183e5d..3e214f39fad 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -1,5 +1,33 @@
+#ifndef __ASM_E820_H
+#define __ASM_E820_H
+#define E820MAP 0x2d0 /* our map */
+#define E820MAX 128 /* number of entries in E820MAP */
+#define E820NR 0x1e8 /* # entries in E820MAP */
+
+#define E820_RAM 1
+#define E820_RESERVED 2
+#define E820_ACPI 3
+#define E820_NVS 4
+
+#ifndef __ASSEMBLY__
+struct e820entry {
+ __u64 addr; /* start of memory segment */
+ __u64 size; /* size of memory segment */
+ __u32 type; /* type of memory segment */
+} __attribute__((packed));
+
+struct e820map {
+ __u32 nr_map;
+ struct e820entry map[E820MAX];
+};
+#endif /* __ASSEMBLY__ */
+
+#ifdef __KERNEL__
#ifdef CONFIG_X86_32
# include "e820_32.h"
#else
# include "e820_64.h"
#endif
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_E820_H */
diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h
index cf67dbb1db7..03f60c690c8 100644
--- a/include/asm-x86/e820_32.h
+++ b/include/asm-x86/e820_32.h
@@ -12,30 +12,10 @@
#ifndef __E820_HEADER
#define __E820_HEADER
-#define E820MAP 0x2d0 /* our map */
-#define E820MAX 128 /* number of entries in E820MAP */
-#define E820NR 0x1e8 /* # entries in E820MAP */
-
-#define E820_RAM 1
-#define E820_RESERVED 2
-#define E820_ACPI 3
-#define E820_NVS 4
-
#define HIGH_MEMORY (1024*1024)
#ifndef __ASSEMBLY__
-struct e820entry {
- u64 addr; /* start of memory segment */
- u64 size; /* size of memory segment */
- u32 type; /* type of memory segment */
-} __attribute__((packed));
-
-struct e820map {
- u32 nr_map;
- struct e820entry map[E820MAX];
-};
-
extern struct e820map e820;
extern int e820_all_mapped(unsigned long start, unsigned long end,
@@ -56,5 +36,4 @@ static inline void e820_mark_nosave_regions(void)
#endif
#endif/*!__ASSEMBLY__*/
-
#endif/*__E820_HEADER*/
diff --git a/include/asm-x86/e820_64.h b/include/asm-x86/e820_64.h
index 3486e701bd8..0bd4787a5d5 100644
--- a/include/asm-x86/e820_64.h
+++ b/include/asm-x86/e820_64.h
@@ -11,27 +11,7 @@
#ifndef __E820_HEADER
#define __E820_HEADER
-#define E820MAP 0x2d0 /* our map */
-#define E820MAX 128 /* number of entries in E820MAP */
-#define E820NR 0x1e8 /* # entries in E820MAP */
-
-#define E820_RAM 1
-#define E820_RESERVED 2
-#define E820_ACPI 3
-#define E820_NVS 4
-
#ifndef __ASSEMBLY__
-struct e820entry {
- u64 addr; /* start of memory segment */
- u64 size; /* size of memory segment */
- u32 type; /* type of memory segment */
-} __attribute__((packed));
-
-struct e820map {
- u32 nr_map;
- struct e820entry map[E820MAX];
-};
-
extern unsigned long find_e820_area(unsigned long start, unsigned long end,
unsigned size);
extern void add_memory_region(unsigned long start, unsigned long size,
diff --git a/include/asm-x86/ist.h b/include/asm-x86/ist.h
index ef2003ebc6f..6ec6ceed95a 100644
--- a/include/asm-x86/ist.h
+++ b/include/asm-x86/ist.h
@@ -17,17 +17,17 @@
*/
-#ifdef __KERNEL__
-
#include <linux/types.h>
struct ist_info {
- u32 signature;
- u32 command;
- u32 event;
- u32 perf_level;
+ __u32 signature;
+ __u32 command;
+ __u32 event;
+ __u32 perf_level;
};
+#ifdef __KERNEL__
+
extern struct ist_info ist_info;
#endif /* __KERNEL__ */
diff --git a/include/asm-x86/lguest.h b/include/asm-x86/lguest.h
new file mode 100644
index 00000000000..ccd33846081
--- /dev/null
+++ b/include/asm-x86/lguest.h
@@ -0,0 +1,86 @@
+#ifndef _X86_LGUEST_H
+#define _X86_LGUEST_H
+
+#define GDT_ENTRY_LGUEST_CS 10
+#define GDT_ENTRY_LGUEST_DS 11
+#define LGUEST_CS (GDT_ENTRY_LGUEST_CS * 8)
+#define LGUEST_DS (GDT_ENTRY_LGUEST_DS * 8)
+
+#ifndef __ASSEMBLY__
+#include <asm/desc.h>
+
+#define GUEST_PL 1
+
+/* Every guest maps the core switcher code. */
+#define SHARED_SWITCHER_PAGES \
+ DIV_ROUND_UP(end_switcher_text - start_switcher_text, PAGE_SIZE)
+/* Pages for switcher itself, then two pages per cpu */
+#define TOTAL_SWITCHER_PAGES (SHARED_SWITCHER_PAGES + 2 * NR_CPUS)
+
+/* We map at -4M for ease of mapping into the guest (one PTE page). */
+#define SWITCHER_ADDR 0xFFC00000
+
+/* Found in switcher.S */
+extern unsigned long default_idt_entries[];
+
+struct lguest_regs
+{
+ /* Manually saved part. */
+ unsigned long eax, ebx, ecx, edx;
+ unsigned long esi, edi, ebp;
+ unsigned long gs;
+ unsigned long fs, ds, es;
+ unsigned long trapnum, errcode;
+ /* Trap pushed part */
+ unsigned long eip;
+ unsigned long cs;
+ unsigned long eflags;
+ unsigned long esp;
+ unsigned long ss;
+};
+
+/* This is a guest-specific page (mapped ro) into the guest. */
+struct lguest_ro_state
+{
+ /* Host information we need to restore when we switch back. */
+ u32 host_cr3;
+ struct Xgt_desc_struct host_idt_desc;
+ struct Xgt_desc_struct host_gdt_desc;
+ u32 host_sp;
+
+ /* Fields which are used when guest is running. */
+ struct Xgt_desc_struct guest_idt_desc;
+ struct Xgt_desc_struct guest_gdt_desc;
+ struct i386_hw_tss guest_tss;
+ struct desc_struct guest_idt[IDT_ENTRIES];
+ struct desc_struct guest_gdt[GDT_ENTRIES];
+};
+
+struct lguest_arch
+{
+ /* The GDT entries copied into lguest_ro_state when running. */
+ struct desc_struct gdt[GDT_ENTRIES];
+
+ /* The IDT entries: some copied into lguest_ro_state when running. */
+ struct desc_struct idt[IDT_ENTRIES];
+
+ /* The address of the last guest-visible pagefault (ie. cr2). */
+ unsigned long last_pagefault;
+};
+
+static inline void lguest_set_ts(void)
+{
+ u32 cr0;
+
+ cr0 = read_cr0();
+ if (!(cr0 & 8))
+ write_cr0(cr0|8);
+}
+
+/* Full 4G segment descriptors, suitable for CS and DS. */
+#define FULL_EXEC_SEGMENT ((struct desc_struct){0x0000ffff, 0x00cf9b00})
+#define FULL_SEGMENT ((struct desc_struct){0x0000ffff, 0x00cf9300})
+
+#endif /* __ASSEMBLY__ */
+
+#endif
diff --git a/include/asm-x86/lguest_hcall.h b/include/asm-x86/lguest_hcall.h
new file mode 100644
index 00000000000..f948491eb56
--- /dev/null
+++ b/include/asm-x86/lguest_hcall.h
@@ -0,0 +1,71 @@
+/* Architecture specific portion of the lguest hypercalls */
+#ifndef _X86_LGUEST_HCALL_H
+#define _X86_LGUEST_HCALL_H
+
+#define LHCALL_FLUSH_ASYNC 0
+#define LHCALL_LGUEST_INIT 1
+#define LHCALL_CRASH 2
+#define LHCALL_LOAD_GDT 3
+#define LHCALL_NEW_PGTABLE 4
+#define LHCALL_FLUSH_TLB 5
+#define LHCALL_LOAD_IDT_ENTRY 6
+#define LHCALL_SET_STACK 7
+#define LHCALL_TS 8
+#define LHCALL_SET_CLOCKEVENT 9
+#define LHCALL_HALT 10
+#define LHCALL_SET_PTE 14
+#define LHCALL_SET_PMD 15
+#define LHCALL_LOAD_TLS 16
+#define LHCALL_NOTIFY 17
+
+/*G:031 First, how does our Guest contact the Host to ask for privileged
+ * operations? There are two ways: the direct way is to make a "hypercall",
+ * to make requests of the Host Itself.
+ *
+ * Our hypercall mechanism uses the highest unused trap code (traps 32 and
+ * above are used by real hardware interrupts). Seventeen hypercalls are
+ * available: the hypercall number is put in the %eax register, and the
+ * arguments (when required) are placed in %edx, %ebx and %ecx. If a return
+ * value makes sense, it's returned in %eax.
+ *
+ * Grossly invalid calls result in Sudden Death at the hands of the vengeful
+ * Host, rather than returning failure. This reflects Winston Churchill's
+ * definition of a gentleman: "someone who is only rude intentionally". */
+#define LGUEST_TRAP_ENTRY 0x1F
+
+#ifndef __ASSEMBLY__
+#include <asm/hw_irq.h>
+
+static inline unsigned long
+hcall(unsigned long call,
+ unsigned long arg1, unsigned long arg2, unsigned long arg3)
+{
+ /* "int" is the Intel instruction to trigger a trap. */
+ asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
+ /* The call is in %eax (aka "a"), and can be replaced */
+ : "=a"(call)
+ /* The other arguments are in %eax, %edx, %ebx & %ecx */
+ : "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
+ /* "memory" means this might write somewhere in memory.
+ * This isn't true for all calls, but it's safe to tell
+ * gcc that it might happen so it doesn't get clever. */
+ : "memory");
+ return call;
+}
+/*:*/
+
+void async_hcall(unsigned long call,
+ unsigned long arg1, unsigned long arg2, unsigned long arg3);
+
+/* Can't use our min() macro here: needs to be a constant */
+#define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32)
+
+#define LHCALL_RING_SIZE 64
+struct hcall_args
+{
+ /* These map directly onto eax, ebx, ecx, edx in struct lguest_regs */
+ unsigned long arg0, arg2, arg3, arg1;
+};
+
+#endif /* !__ASSEMBLY__ */
+#endif /* _I386_LGUEST_HCALL_H */
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index e3ffd14a3f0..6a65231bc78 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -186,6 +186,7 @@ unifdef-y += cyclades.h
unifdef-y += dccp.h
unifdef-y += dirent.h
unifdef-y += dlm.h
+unifdef-y += edd.h
unifdef-y += elfcore.h
unifdef-y += errno.h
unifdef-y += errqueue.h
@@ -306,6 +307,7 @@ unifdef-y += rtc.h
unifdef-y += rtnetlink.h
unifdef-y += scc.h
unifdef-y += sched.h
+unifdef-y += screen_info.h
unifdef-y += sdla.h
unifdef-y += selinux_netlink.h
unifdef-y += sem.h
@@ -341,6 +343,9 @@ unifdef-y += user.h
unifdef-y += utsname.h
unifdef-y += videodev2.h
unifdef-y += videodev.h
+unifdef-y += virtio_config.h
+unifdef-y += virtio_blk.h
+unifdef-y += virtio_net.h
unifdef-y += wait.h
unifdef-y += wanrouter.h
unifdef-y += watchdog.h
diff --git a/include/linux/apm_bios.h b/include/linux/apm_bios.h
index 5f921c84827..9754baa1492 100644
--- a/include/linux/apm_bios.h
+++ b/include/linux/apm_bios.h
@@ -16,29 +16,29 @@
* General Public License for more details.
*/
-typedef unsigned short apm_event_t;
-typedef unsigned short apm_eventinfo_t;
+#include <linux/types.h>
+
+struct apm_bios_info {
+ __u16 version;
+ __u16 cseg;
+ __u32 offset;
+ __u16 cseg_16;
+ __u16 dseg;
+ __u16 flags;
+ __u16 cseg_len;
+ __u16 cseg_16_len;
+ __u16 dseg_len;
+};
#ifdef __KERNEL__
-#include <linux/types.h>
+typedef unsigned short apm_event_t;
+typedef unsigned short apm_eventinfo_t;
#define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8)
#define APM_CS_16 (APM_CS + 8)
#define APM_DS (APM_CS_16 + 8)
-struct apm_bios_info {
- u16 version;
- u16 cseg;
- u32 offset;
- u16 cseg_16;
- u16 dseg;
- u16 flags;
- u16 cseg_len;
- u16 cseg_16_len;
- u16 dseg_len;
-};
-
/* Results of APM Installation Check */
#define APM_16_BIT_SUPPORT 0x0001
#define APM_32_BIT_SUPPORT 0x0002
diff --git a/include/linux/edd.h b/include/linux/edd.h
index 7b647822d6d..5d747c5cd0f 100644
--- a/include/linux/edd.h
+++ b/include/linux/edd.h
@@ -67,113 +67,113 @@
#define EDD_INFO_USE_INT13_FN50 (1 << 7)
struct edd_device_params {
- u16 length;
- u16 info_flags;
- u32 num_default_cylinders;
- u32 num_default_heads;
- u32 sectors_per_track;
- u64 number_of_sectors;
- u16 bytes_per_sector;
- u32 dpte_ptr; /* 0xFFFFFFFF for our purposes */
- u16 key; /* = 0xBEDD */
- u8 device_path_info_length; /* = 44 */
- u8 reserved2;
- u16 reserved3;
- u8 host_bus_type[4];
- u8 interface_type[8];
+ __u16 length;
+ __u16 info_flags;
+ __u32 num_default_cylinders;
+ __u32 num_default_heads;
+ __u32 sectors_per_track;
+ __u64 number_of_sectors;
+ __u16 bytes_per_sector;
+ __u32 dpte_ptr; /* 0xFFFFFFFF for our purposes */
+ __u16 key; /* = 0xBEDD */
+ __u8 device_path_info_length; /* = 44 */
+ __u8 reserved2;
+ __u16 reserved3;
+ __u8 host_bus_type[4];
+ __u8 interface_type[8];
union {
struct {
- u16 base_address;
- u16 reserved1;
- u32 reserved2;
+ __u16 base_address;
+ __u16 reserved1;
+ __u32 reserved2;
} __attribute__ ((packed)) isa;
struct {
- u8 bus;
- u8 slot;
- u8 function;
- u8 channel;
- u32 reserved;
+ __u8 bus;
+ __u8 slot;
+ __u8 function;
+ __u8 channel;
+ __u32 reserved;
} __attribute__ ((packed)) pci;
/* pcix is same as pci */
struct {
- u64 reserved;
+ __u64 reserved;
} __attribute__ ((packed)) ibnd;
struct {
- u64 reserved;
+ __u64 reserved;
} __attribute__ ((packed)) xprs;
struct {
- u64 reserved;
+ __u64 reserved;
} __attribute__ ((packed)) htpt;
struct {
- u64 reserved;
+ __u64 reserved;
} __attribute__ ((packed)) unknown;
} interface_path;
union {
struct {
- u8 device;
- u8 reserved1;
- u16 reserved2;
- u32 reserved3;
- u64 reserved4;
+ __u8 device;
+ __u8 reserved1;
+ __u16 reserved2;
+ __u32 reserved3;
+ __u64 reserved4;
} __attribute__ ((packed)) ata;
struct {
- u8 device;
- u8 lun;
- u8 reserved1;
- u8 reserved2;
- u32 reserved3;
- u64 reserved4;
+ __u8 device;
+ __u8 lun;
+ __u8 reserved1;
+ __u8 reserved2;
+ __u32 reserved3;
+ __u64 reserved4;
} __attribute__ ((packed)) atapi;
struct {
- u16 id;
- u64 lun;
- u16 reserved1;
- u32 reserved2;
+ __u16 id;
+ __u64 lun;
+ __u16 reserved1;
+ __u32 reserved2;
} __attribute__ ((packed)) scsi;
struct {
- u64 serial_number;
- u64 reserved;
+ __u64 serial_number;
+ __u64 reserved;
} __attribute__ ((packed)) usb;
struct {
- u64 eui;
- u64 reserved;
+ __u64 eui;
+ __u64 reserved;
} __attribute__ ((packed)) i1394;
struct {
- u64 wwid;
- u64 lun;
+ __u64 wwid;
+ __u64 lun;
} __attribute__ ((packed)) fibre;
struct {
- u64 identity_tag;
- u64 reserved;
+ __u64 identity_tag;
+ __u64 reserved;
} __attribute__ ((packed)) i2o;
struct {
- u32 array_number;
- u32 reserved1;
- u64 reserved2;
+ __u32 array_number;
+ __u32 reserved1;
+ __u64 reserved2;
} __attribute__ ((packed)) raid;
struct {
- u8 device;
- u8 reserved1;
- u16 reserved2;
- u32 reserved3;
- u64 reserved4;
+ __u8 device;
+ __u8 reserved1;
+ __u16 reserved2;
+ __u32 reserved3;
+ __u64 reserved4;
} __attribute__ ((packed)) sata;
struct {
- u64 reserved1;
- u64 reserved2;
+ __u64 reserved1;
+ __u64 reserved2;
} __attribute__ ((packed)) unknown;
} device_path;
- u8 reserved4;
- u8 checksum;
+ __u8 reserved4;
+ __u8 checksum;
} __attribute__ ((packed));
struct edd_info {
- u8 device;
- u8 version;
- u16 interface_support;
- u16 legacy_max_cylinder;
- u8 legacy_max_head;
- u8 legacy_sectors_per_track;
+ __u8 device;
+ __u8 version;
+ __u16 interface_support;
+ __u16 legacy_max_cylinder;
+ __u8 legacy_max_head;
+ __u8 legacy_sectors_per_track;
struct edd_device_params params;
} __attribute__ ((packed));
@@ -184,8 +184,9 @@ struct edd {
unsigned char edd_info_nr;
};
+#ifdef __KERNEL__
extern struct edd edd;
-
+#endif /* __KERNEL__ */
#endif /*!__ASSEMBLY__ */
#endif /* _LINUX_EDD_H */
diff --git a/include/linux/lguest.h b/include/linux/lguest.h
index 157ad64aa7c..8beb2913462 100644
--- a/include/linux/lguest.h
+++ b/include/linux/lguest.h
@@ -1,76 +1,16 @@
/* Things the lguest guest needs to know. Note: like all lguest interfaces,
* this is subject to wild and random change between versions. */
-#ifndef _ASM_LGUEST_H
-#define _ASM_LGUEST_H
+#ifndef _LINUX_LGUEST_H
+#define _LINUX_LGUEST_H
#ifndef __ASSEMBLY__
+#include <linux/time.h>
#include <asm/irq.h>
-
-#define LHCALL_FLUSH_ASYNC 0
-#define LHCALL_LGUEST_INIT 1
-#define LHCALL_CRASH 2
-#define LHCALL_LOAD_GDT 3
-#define LHCALL_NEW_PGTABLE 4
-#define LHCALL_FLUSH_TLB 5
-#define LHCALL_LOAD_IDT_ENTRY 6
-#define LHCALL_SET_STACK 7
-#define LHCALL_TS 8
-#define LHCALL_SET_CLOCKEVENT 9
-#define LHCALL_HALT 10
-#define LHCALL_BIND_DMA 12
-#define LHCALL_SEND_DMA 13
-#define LHCALL_SET_PTE 14
-#define LHCALL_SET_PMD 15
-#define LHCALL_LOAD_TLS 16
+#include <asm/lguest_hcall.h>
#define LG_CLOCK_MIN_DELTA 100UL
#define LG_CLOCK_MAX_DELTA ULONG_MAX
-/*G:031 First, how does our Guest contact the Host to ask for privileged
- * operations? There are two ways: the direct way is to make a "hypercall",
- * to make requests of the Host Itself.
- *
- * Our hypercall mechanism uses the highest unused trap code (traps 32 and
- * above are used by real hardware interrupts). Seventeen hypercalls are
- * available: the hypercall number is put in the %eax register, and the
- * arguments (when required) are placed in %edx, %ebx and %ecx. If a return
- * value makes sense, it's returned in %eax.
- *
- * Grossly invalid calls result in Sudden Death at the hands of the vengeful
- * Host, rather than returning failure. This reflects Winston Churchill's
- * definition of a gentleman: "someone who is only rude intentionally". */
-#define LGUEST_TRAP_ENTRY 0x1F
-
-static inline unsigned long
-hcall(unsigned long call,
- unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
- /* "int" is the Intel instruction to trigger a trap. */
- asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
- /* The call is in %eax (aka "a"), and can be replaced */
- : "=a"(call)
- /* The other arguments are in %eax, %edx, %ebx & %ecx */
- : "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
- /* "memory" means this might write somewhere in memory.
- * This isn't true for all calls, but it's safe to tell
- * gcc that it might happen so it doesn't get clever. */
- : "memory");
- return call;
-}
-/*:*/
-
-void async_hcall(unsigned long call,
- unsigned long arg1, unsigned long arg2, unsigned long arg3);
-
-/* Can't use our min() macro here: needs to be a constant */
-#define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32)
-
-#define LHCALL_RING_SIZE 64
-struct hcall_ring
-{
- u32 eax, edx, ebx, ecx;
-};
-
/*G:032 The second method of communicating with the Host is to via "struct
* lguest_data". The Guest's very first hypercall is to tell the Host where
* this is, and then the Guest and Host both publish information in it. :*/
@@ -97,20 +37,24 @@ struct lguest_data
/* 0xFF == done (set by Host), 0 == pending (set by Guest). */
u8 hcall_status[LHCALL_RING_SIZE];
/* The actual registers for the hypercalls. */
- struct hcall_ring hcalls[LHCALL_RING_SIZE];
+ struct hcall_args hcalls[LHCALL_RING_SIZE];
/* Fields initialized by the Host at boot: */
/* Memory not to try to access */
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;
+ /* Page where the top-level pagetable is */
+ unsigned long pgdir;
/* Fields initialized by the Guest at boot: */
/* Instruction range to suppress interrupts even if enabled */
unsigned long noirq_start, noirq_end;
+ /* Address above which page tables are all identical. */
+ unsigned long kernel_address;
+ /* The vector to try to use for system calls (0x40 or 0x80). */
+ unsigned int syscall_vec;
};
extern struct lguest_data lguest_data;
#endif /* __ASSEMBLY__ */
-#endif /* _ASM_LGUEST_H */
+#endif /* _LINUX_LGUEST_H */
diff --git a/include/linux/lguest_bus.h b/include/linux/lguest_bus.h
deleted file mode 100644
index d27853ddc64..00000000000
--- a/include/linux/lguest_bus.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#ifndef _ASM_LGUEST_DEVICE_H
-#define _ASM_LGUEST_DEVICE_H
-/* Everything you need to know about lguest devices. */
-#include <linux/device.h>
-#include <linux/lguest.h>
-#include <linux/lguest_launcher.h>
-
-struct lguest_device {
- /* Unique busid, and index into lguest_page->devices[] */
- unsigned int index;
-
- struct device dev;
-
- /* Driver can hang data off here. */
- void *private;
-};
-
-/*D:380 Since interrupt numbers are arbitrary, we use a convention: each device
- * can use the interrupt number corresponding to its index. The +1 is because
- * interrupt 0 is not usable (it's actually the timer interrupt). */
-static inline int lgdev_irq(const struct lguest_device *dev)
-{
- return dev->index + 1;
-}
-/*:*/
-
-/* dma args must not be vmalloced! */
-void lguest_send_dma(unsigned long key, struct lguest_dma *dma);
-int lguest_bind_dma(unsigned long key, struct lguest_dma *dmas,
- unsigned int num, u8 irq);
-void lguest_unbind_dma(unsigned long key, struct lguest_dma *dmas);
-
-/* Map the virtual device space */
-void *lguest_map(unsigned long phys_addr, unsigned long pages);
-void lguest_unmap(void *);
-
-struct lguest_driver {
- const char *name;
- struct module *owner;
- u16 device_type;
- int (*probe)(struct lguest_device *dev);
- void (*remove)(struct lguest_device *dev);
-
- struct device_driver drv;
-};
-
-extern int register_lguest_driver(struct lguest_driver *drv);
-extern void unregister_lguest_driver(struct lguest_driver *drv);
-
-extern struct lguest_device_desc *lguest_devices; /* Just past max_pfn */
-#endif /* _ASM_LGUEST_DEVICE_H */
diff --git a/include/linux/lguest_launcher.h b/include/linux/lguest_launcher.h
index 64167057944..61e1e3e6b1c 100644
--- a/include/linux/lguest_launcher.h
+++ b/include/linux/lguest_launcher.h
@@ -1,6 +1,7 @@
#ifndef _ASM_LGUEST_USER
#define _ASM_LGUEST_USER
/* Everything the "lguest" userspace program needs to know. */
+#include <linux/types.h>
/* 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. */
@@ -9,66 +10,6 @@
/* How many devices? Assume each one wants up to two dma arrays per device. */
#define LGUEST_MAX_DEVICES (LGUEST_MAX_DMA/2)
-/*D:200
- * Lguest I/O
- *
- * The lguest I/O mechanism is the only way Guests can talk to devices. There
- * are two hypercalls involved: SEND_DMA for output and BIND_DMA for input. In
- * each case, "struct lguest_dma" describes the buffer: this contains 16
- * addr/len pairs, and if there are fewer buffer elements the len array is
- * terminated with a 0.
- *
- * I/O is organized by keys: BIND_DMA attaches buffers to a particular key, and
- * SEND_DMA transfers to buffers bound to particular key. By convention, keys
- * correspond to a physical address within the device's page. This means that
- * devices will never accidentally end up with the same keys, and allows the
- * Host use The Futex Trick (as we'll see later in our journey).
- *
- * SEND_DMA simply indicates a key to send to, and the physical address of the
- * "struct lguest_dma" to send. The Host will write the number of bytes
- * transferred into the "struct lguest_dma"'s used_len member.
- *
- * BIND_DMA indicates a key to bind to, a pointer to an array of "struct
- * lguest_dma"s ready for receiving, the size of that array, and an interrupt
- * to trigger when data is received. The Host will only allow transfers into
- * buffers with a used_len of zero: it then sets used_len to the number of
- * bytes transferred and triggers the interrupt for the Guest to process the
- * new input. */
-struct lguest_dma
-{
- /* 0 if free to be used, filled by the Host. */
- u32 used_len;
- unsigned long addr[LGUEST_MAX_DMA_SECTIONS];
- u16 len[LGUEST_MAX_DMA_SECTIONS];
-};
-/*:*/
-
-/*D:460 This is the layout of a block device memory page. The Launcher sets up
- * the num_sectors initially to tell the Guest the size of the disk. The Guest
- * puts the type, sector and length of the request in the first three fields,
- * then DMAs to the Host. The Host processes the request, sets up the result,
- * then DMAs back to the Guest. */
-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 */
-};
-
-/*D:520 The network device is basically a memory page where all the Guests on
- * the network publish their MAC (ethernet) addresses: it's an array of "struct
- * lguest_net": */
-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
@@ -81,38 +22,29 @@ struct lguest_net
* complex burden for the Host and suboptimal for the Guest, so we have our own
* "lguest" bus and simple drivers.
*
- * Devices are described by an array of LGUEST_MAX_DEVICES of these structs,
- * placed by the Launcher just above the top of physical memory:
+ * Devices are described by a simplified ID, a status byte, and some "config"
+ * bytes which describe this device's configuration. This is placed by the
+ * Launcher just above the top of physical memory:
*/
struct lguest_device_desc {
- /* The device type: console, network, disk etc. */
- u16 type;
-#define LGUEST_DEVICE_T_CONSOLE 1
-#define LGUEST_DEVICE_T_NET 2
-#define LGUEST_DEVICE_T_BLOCK 3
-
- /* The specific features of this device: these depends on device type
- * except for LGUEST_DEVICE_F_RANDOMNESS. */
- u16 features;
-#define LGUEST_NET_F_NOCSUM 0x4000 /* Don't bother checksumming */
-#define LGUEST_DEVICE_F_RANDOMNESS 0x8000 /* IRQ is fairly random */
-
- /* This is how the Guest reports status of the device: the Host can set
- * LGUEST_DEVICE_S_REMOVED to indicate removal, but the rest are only
- * ever manipulated by the Guest, and only ever set. */
- 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 */
+ /* The device type: console, network, disk etc. Type 0 terminates. */
+ __u8 type;
+ /* The number of bytes of the config array. */
+ __u8 config_len;
+ /* A status byte, written by the Guest. */
+ __u8 status;
+ __u8 config[0];
+};
- /* Each device exists somewhere in Guest physical memory, over some
- * number of pages. */
- u16 num_pages;
- u32 pfn;
+/*D:135 This is how we expect the device configuration field for a virtqueue
+ * (type VIRTIO_CONFIG_F_VIRTQUEUE) to be laid out: */
+struct lguest_vqconfig {
+ /* The number of entries in the virtio_ring */
+ __u16 num;
+ /* The interrupt we get when something happens. */
+ __u16 irq;
+ /* The page number of the virtio ring for this device. */
+ __u32 pfn;
};
/*:*/
@@ -120,7 +52,7 @@ struct lguest_device_desc {
enum lguest_req
{
LHREQ_INITIALIZE, /* + pfnlimit, pgdir, start, pageoffset */
- LHREQ_GETDMA, /* + addr (returns &lguest_dma, irq in ->used_len) */
+ LHREQ_GETDMA, /* No longer used */
LHREQ_IRQ, /* + irq */
LHREQ_BREAK, /* + on/off flag (on blocks until someone does off) */
};
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 522b0dd836c..e9fddb42f26 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -361,4 +361,10 @@ struct ssb_device_id {
#define SSB_ANY_ID 0xFFFF
#define SSB_ANY_REV 0xFF
+struct virtio_device_id {
+ __u32 device;
+ __u32 vendor;
+};
+#define VIRTIO_DEV_ANY_ID 0xffffffff
+
#endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h
index ba81ffe9958..827b85bbf38 100644
--- a/include/linux/screen_info.h
+++ b/include/linux/screen_info.h
@@ -8,45 +8,43 @@
*/
struct screen_info {
- u8 orig_x; /* 0x00 */
- u8 orig_y; /* 0x01 */
- u16 ext_mem_k; /* 0x02 */
- u16 orig_video_page; /* 0x04 */
- u8 orig_video_mode; /* 0x06 */
- u8 orig_video_cols; /* 0x07 */
- u16 unused2; /* 0x08 */
- u16 orig_video_ega_bx; /* 0x0a */
- u16 unused3; /* 0x0c */
- u8 orig_video_lines; /* 0x0e */
- u8 orig_video_isVGA; /* 0x0f */
- u16 orig_video_points; /* 0x10 */
+ __u8 orig_x; /* 0x00 */
+ __u8 orig_y; /* 0x01 */
+ __u16 ext_mem_k; /* 0x02 */
+ __u16 orig_video_page; /* 0x04 */
+ __u8 orig_video_mode; /* 0x06 */
+ __u8 orig_video_cols; /* 0x07 */
+ __u16 unused2; /* 0x08 */
+ __u16 orig_video_ega_bx;/* 0x0a */
+ __u16 unused3; /* 0x0c */
+ __u8 orig_video_lines; /* 0x0e */
+ __u8 orig_video_isVGA; /* 0x0f */
+ __u16 orig_video_points;/* 0x10 */
/* VESA graphic mode -- linear frame buffer */
- u16 lfb_width; /* 0x12 */
- u16 lfb_height; /* 0x14 */
- u16 lfb_depth; /* 0x16 */
- u32 lfb_base; /* 0x18 */
- u32 lfb_size; /* 0x1c */
- u16 cl_magic, cl_offset; /* 0x20 */
- u16 lfb_linelength; /* 0x24 */
- u8 red_size; /* 0x26 */
- u8 red_pos; /* 0x27 */
- u8 green_size; /* 0x28 */
- u8 green_pos; /* 0x29 */
- u8 blue_size; /* 0x2a */
- u8 blue_pos; /* 0x2b */
- u8 rsvd_size; /* 0x2c */
- u8 rsvd_pos; /* 0x2d */
- u16 vesapm_seg; /* 0x2e */
- u16 vesapm_off; /* 0x30 */
- u16 pages; /* 0x32 */
- u16 vesa_attributes; /* 0x34 */
- u32 capabilities; /* 0x36 */
- u8 _reserved[6]; /* 0x3a */
+ __u16 lfb_width; /* 0x12 */
+ __u16 lfb_height; /* 0x14 */
+ __u16 lfb_depth; /* 0x16 */
+ __u32 lfb_base; /* 0x18 */
+ __u32 lfb_size; /* 0x1c */
+ __u16 cl_magic, cl_offset; /* 0x20 */
+ __u16 lfb_linelength; /* 0x24 */
+ __u8 red_size; /* 0x26 */
+ __u8 red_pos; /* 0x27 */
+ __u8 green_size; /* 0x28 */
+ __u8 green_pos; /* 0x29 */
+ __u8 blue_size; /* 0x2a */
+ __u8 blue_pos; /* 0x2b */
+ __u8 rsvd_size; /* 0x2c */
+ __u8 rsvd_pos; /* 0x2d */
+ __u16 vesapm_seg; /* 0x2e */
+ __u16 vesapm_off; /* 0x30 */
+ __u16 pages; /* 0x32 */
+ __u16 vesa_attributes; /* 0x34 */
+ __u32 capabilities; /* 0x36 */
+ __u8 _reserved[6]; /* 0x3a */
} __attribute__((packed));
-extern struct screen_info screen_info;
-
#define VIDEO_TYPE_MDA 0x10 /* Monochrome Text Display */
#define VIDEO_TYPE_CGA 0x11 /* CGA Display */
#define VIDEO_TYPE_EGAM 0x20 /* EGA/VGA in Monochrome Mode */
@@ -65,4 +63,17 @@ extern struct screen_info screen_info;
#define VIDEO_TYPE_PMAC 0x60 /* PowerMacintosh frame buffer. */
+#ifdef __KERNEL__
+extern struct screen_info screen_info;
+
+#define ORIG_X (screen_info.orig_x)
+#define ORIG_Y (screen_info.orig_y)
+#define ORIG_VIDEO_MODE (screen_info.orig_video_mode)
+#define ORIG_VIDEO_COLS (screen_info.orig_video_cols)
+#define ORIG_VIDEO_EGA_BX (screen_info.orig_video_ega_bx)
+#define ORIG_VIDEO_LINES (screen_info.orig_video_lines)
+#define ORIG_VIDEO_ISVGA (screen_info.orig_video_isVGA)
+#define ORIG_VIDEO_POINTS (screen_info.orig_video_points)
+#endif /* __KERNEL__ */
+
#endif /* _SCREEN_INFO_H */
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
new file mode 100644
index 00000000000..14e1379876d
--- /dev/null
+++ b/include/linux/virtio.h
@@ -0,0 +1,110 @@
+#ifndef _LINUX_VIRTIO_H
+#define _LINUX_VIRTIO_H
+/* Everything a virtio driver needs to work with any particular virtio
+ * implementation. */
+#include <linux/types.h>
+#include <linux/scatterlist.h>
+#include <linux/spinlock.h>
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+
+/**
+ * virtqueue - a queue to register buffers for sending or receiving.
+ * @callback: the function to call when buffers are consumed (can be NULL).
+ * If this returns false, callbacks are suppressed until vq_ops->restart
+ * is called.
+ * @vdev: the virtio device this queue was created for.
+ * @vq_ops: the operations for this virtqueue (see below).
+ * @priv: a pointer for the virtqueue implementation to use.
+ */
+struct virtqueue
+{
+ bool (*callback)(struct virtqueue *vq);
+ struct virtio_device *vdev;
+ struct virtqueue_ops *vq_ops;
+ void *priv;
+};
+
+/**
+ * virtqueue_ops - operations for virtqueue abstraction layer
+ * @add_buf: expose buffer to other end
+ * vq: the struct virtqueue we're talking about.
+ * sg: the description of the buffer(s).
+ * out_num: the number of sg readable by other side
+ * in_num: the number of sg which are writable (after readable ones)
+ * data: the token identifying the buffer.
+ * Returns 0 or an error.
+ * @kick: update after add_buf
+ * vq: the struct virtqueue
+ * After one or more add_buf calls, invoke this to kick the other side.
+ * @get_buf: get the next used buffer
+ * vq: the struct virtqueue we're talking about.
+ * len: the length written into the buffer
+ * Returns NULL or the "data" token handed to add_buf.
+ * @restart: restart callbacks after callback returned false.
+ * vq: the struct virtqueue we're talking about.
+ * This returns "false" (and doesn't re-enable) if there are pending
+ * buffers in the queue, to avoid a race.
+ * @shutdown: "unadd" all buffers.
+ * vq: the struct virtqueue we're talking about.
+ * Remove everything from the queue.
+ *
+ * Locking rules are straightforward: the driver is responsible for
+ * locking. No two operations may be invoked simultaneously.
+ *
+ * All operations can be called in any context.
+ */
+struct virtqueue_ops {
+ int (*add_buf)(struct virtqueue *vq,
+ struct scatterlist sg[],
+ unsigned int out_num,
+ unsigned int in_num,
+ void *data);
+
+ void (*kick)(struct virtqueue *vq);
+
+ void *(*get_buf)(struct virtqueue *vq, unsigned int *len);
+
+ bool (*restart)(struct virtqueue *vq);
+
+ void (*shutdown)(struct virtqueue *vq);
+};
+
+/**
+ * virtio_device - representation of a device using virtio
+ * @index: unique position on the virtio bus
+ * @dev: underlying device.
+ * @id: the device type identification (used to match it with a driver).
+ * @config: the configuration ops for this device.
+ * @priv: private pointer for the driver's use.
+ */
+struct virtio_device
+{
+ int index;
+ struct device dev;
+ struct virtio_device_id id;
+ struct virtio_config_ops *config;
+ void *priv;
+};
+
+int register_virtio_device(struct virtio_device *dev);
+void unregister_virtio_device(struct virtio_device *dev);
+
+/**
+ * virtio_driver - operations for a virtio I/O driver
+ * @driver: underlying device driver (populate name and owner).
+ * @id_table: the ids serviced by this driver.
+ * @probe: the function to call when a device is found. Returns a token for
+ * remove, or PTR_ERR().
+ * @remove: the function when a device is removed.
+ */
+struct virtio_driver {
+ struct device_driver driver;
+ const struct virtio_device_id *id_table;
+ int (*probe)(struct virtio_device *dev);
+ void (*remove)(struct virtio_device *dev);
+};
+
+int register_virtio_driver(struct virtio_driver *drv);
+void unregister_virtio_driver(struct virtio_driver *drv);
+#endif /* _LINUX_VIRTIO_H */
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
new file mode 100644
index 00000000000..7bd2bce0cfd
--- /dev/null
+++ b/include/linux/virtio_blk.h
@@ -0,0 +1,51 @@
+#ifndef _LINUX_VIRTIO_BLK_H
+#define _LINUX_VIRTIO_BLK_H
+#include <linux/virtio_config.h>
+
+/* The ID for virtio_block */
+#define VIRTIO_ID_BLOCK 2
+
+/* Feature bits */
+#define VIRTIO_CONFIG_BLK_F 0x40
+#define VIRTIO_BLK_F_BARRIER 1 /* Does host support barriers? */
+
+/* The capacity (in 512-byte sectors). */
+#define VIRTIO_CONFIG_BLK_F_CAPACITY 0x41
+/* The maximum segment size. */
+#define VIRTIO_CONFIG_BLK_F_SIZE_MAX 0x42
+/* The maximum number of segments. */
+#define VIRTIO_CONFIG_BLK_F_SEG_MAX 0x43
+
+/* These two define direction. */
+#define VIRTIO_BLK_T_IN 0
+#define VIRTIO_BLK_T_OUT 1
+
+/* This bit says it's a scsi command, not an actual read or write. */
+#define VIRTIO_BLK_T_SCSI_CMD 2
+
+/* Barrier before this op. */
+#define VIRTIO_BLK_T_BARRIER 0x80000000
+
+/* This is the first element of the read scatter-gather list. */
+struct virtio_blk_outhdr
+{
+ /* VIRTIO_BLK_T* */
+ __u32 type;
+ /* io priority. */
+ __u32 ioprio;
+ /* Sector (ie. 512 byte offset) */
+ __u64 sector;
+ /* Where to put reply. */
+ __u64 id;
+};
+
+#define VIRTIO_BLK_S_OK 0
+#define VIRTIO_BLK_S_IOERR 1
+#define VIRTIO_BLK_S_UNSUPP 2
+
+/* This is the first element of the write scatter-gather list */
+struct virtio_blk_inhdr
+{
+ unsigned char status;
+};
+#endif /* _LINUX_VIRTIO_BLK_H */
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
new file mode 100644
index 00000000000..bcc01888df7
--- /dev/null
+++ b/include/linux/virtio_config.h
@@ -0,0 +1,111 @@
+#ifndef _LINUX_VIRTIO_CONFIG_H
+#define _LINUX_VIRTIO_CONFIG_H
+/* Virtio devices use a standardized configuration space to define their
+ * features and pass configuration information, but each implementation can
+ * store and access that space differently. */
+#include <linux/types.h>
+
+/* Status byte for guest to report progress, and synchronize config. */
+/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
+#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
+/* We have found a driver for the device. */
+#define VIRTIO_CONFIG_S_DRIVER 2
+/* Driver has used its parts of the config, and is happy */
+#define VIRTIO_CONFIG_S_DRIVER_OK 4
+/* We've given up on this device. */
+#define VIRTIO_CONFIG_S_FAILED 0x80
+
+/* Feature byte (actually 7 bits availabe): */
+/* Requirements/features of the virtio implementation. */
+#define VIRTIO_CONFIG_F_VIRTIO 1
+/* Requirements/features of the virtqueue (may have more than one). */
+#define VIRTIO_CONFIG_F_VIRTQUEUE 2
+
+#ifdef __KERNEL__
+struct virtio_device;
+
+/**
+ * virtio_config_ops - operations for configuring a virtio device
+ * @find: search for the next configuration field of the given type.
+ * vdev: the virtio_device
+ * type: the feature type
+ * len: the (returned) length of the field if found.
+ * Returns a token if found, or NULL. Never returnes the same field twice
+ * (ie. it's used up).
+ * @get: read the value of a configuration field after find().
+ * vdev: the virtio_device
+ * token: the token returned from find().
+ * buf: the buffer to write the field value into.
+ * len: the length of the buffer (given by find()).
+ * Note that contents are conventionally little-endian.
+ * @set: write the value of a configuration field after find().
+ * vdev: the virtio_device
+ * token: the token returned from find().
+ * buf: the buffer to read the field value from.
+ * len: the length of the buffer (given by find()).
+ * Note that contents are conventionally little-endian.
+ * @get_status: read the status byte
+ * vdev: the virtio_device
+ * Returns the status byte
+ * @set_status: write the status byte
+ * vdev: the virtio_device
+ * status: the new status byte
+ * @find_vq: find the first VIRTIO_CONFIG_F_VIRTQUEUE and create a virtqueue.
+ * vdev: the virtio_device
+ * callback: the virqtueue callback
+ * Returns the new virtqueue or ERR_PTR().
+ * @del_vq: free a virtqueue found by find_vq().
+ */
+struct virtio_config_ops
+{
+ void *(*find)(struct virtio_device *vdev, u8 type, unsigned *len);
+ void (*get)(struct virtio_device *vdev, void *token,
+ void *buf, unsigned len);
+ void (*set)(struct virtio_device *vdev, void *token,
+ const void *buf, unsigned len);
+ u8 (*get_status)(struct virtio_device *vdev);
+ void (*set_status)(struct virtio_device *vdev, u8 status);
+ struct virtqueue *(*find_vq)(struct virtio_device *vdev,
+ bool (*callback)(struct virtqueue *));
+ void (*del_vq)(struct virtqueue *vq);
+};
+
+/**
+ * virtio_config_val - get a single virtio config and mark it used.
+ * @config: the virtio config space
+ * @type: the type to search for.
+ * @val: a pointer to the value to fill in.
+ *
+ * Once used, the config type is marked with VIRTIO_CONFIG_F_USED so it can't
+ * be found again. This version does endian conversion. */
+#define virtio_config_val(vdev, type, v) ({ \
+ int _err = __virtio_config_val((vdev),(type),(v),sizeof(*(v))); \
+ \
+ BUILD_BUG_ON(sizeof(*(v)) != 1 && sizeof(*(v)) != 2 \
+ && sizeof(*(v)) != 4 && sizeof(*(v)) != 8); \
+ if (!_err) { \
+ switch (sizeof(*(v))) { \
+ case 2: le16_to_cpus((__u16 *) v); break; \
+ case 4: le32_to_cpus((__u32 *) v); break; \
+ case 8: le64_to_cpus((__u64 *) v); break; \
+ } \
+ } \
+ _err; \
+})
+
+int __virtio_config_val(struct virtio_device *dev,
+ u8 type, void *val, size_t size);
+
+/**
+ * virtio_use_bit - helper to use a feature bit in a bitfield value.
+ * @dev: the virtio device
+ * @token: the token as returned from vdev->config->find().
+ * @len: the length of the field.
+ * @bitnum: the bit to test.
+ *
+ * If handed a NULL token, it returns false, otherwise returns bit status.
+ * If it's one, it sets the mirroring acknowledgement bit. */
+int virtio_use_bit(struct virtio_device *vdev,
+ void *token, unsigned int len, unsigned int bitnum);
+#endif /* __KERNEL__ */
+#endif /* _LINUX_VIRTIO_CONFIG_H */
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h
new file mode 100644
index 00000000000..ed2d4ead7eb
--- /dev/null
+++ b/include/linux/virtio_console.h
@@ -0,0 +1,12 @@
+#ifndef _LINUX_VIRTIO_CONSOLE_H
+#define _LINUX_VIRTIO_CONSOLE_H
+#include <linux/virtio_config.h>
+
+/* The ID for virtio console */
+#define VIRTIO_ID_CONSOLE 3
+
+#ifdef __KERNEL__
+int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_VIRTIO_CONSOLE_H */
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h
new file mode 100644
index 00000000000..ae469ae55d3
--- /dev/null
+++ b/include/linux/virtio_net.h
@@ -0,0 +1,36 @@
+#ifndef _LINUX_VIRTIO_NET_H
+#define _LINUX_VIRTIO_NET_H
+#include <linux/virtio_config.h>
+
+/* The ID for virtio_net */
+#define VIRTIO_ID_NET 1
+
+/* The bitmap of config for virtio net */
+#define VIRTIO_CONFIG_NET_F 0x40
+#define VIRTIO_NET_F_NO_CSUM 0
+#define VIRTIO_NET_F_TSO4 1
+#define VIRTIO_NET_F_UFO 2
+#define VIRTIO_NET_F_TSO4_ECN 3
+#define VIRTIO_NET_F_TSO6 4
+
+/* The config defining mac address. */
+#define VIRTIO_CONFIG_NET_MAC_F 0x41
+
+/* This is the first element of the scatter-gather list. If you don't
+ * specify GSO or CSUM features, you can simply ignore the header. */
+struct virtio_net_hdr
+{
+#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset
+ __u8 flags;
+#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame
+#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
+/* FIXME: Do we need this? If they said they can handle ECN, do they care? */
+#define VIRTIO_NET_HDR_GSO_TCPV4_ECN 2 // GSO frame, IPv4 TCP w/ ECN
+#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
+#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
+ __u8 gso_type;
+ __u16 gso_size;
+ __u16 csum_start;
+ __u16 csum_offset;
+};
+#endif /* _LINUX_VIRTIO_NET_H */
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
new file mode 100644
index 00000000000..ac69e7bb5a1
--- /dev/null
+++ b/include/linux/virtio_ring.h
@@ -0,0 +1,119 @@
+#ifndef _LINUX_VIRTIO_RING_H
+#define _LINUX_VIRTIO_RING_H
+/* An interface for efficient virtio implementation, currently for use by KVM
+ * and lguest, but hopefully others soon. Do NOT change this since it will
+ * break existing servers and clients.
+ *
+ * This header is BSD licensed so anyone can use the definitions to implement
+ * compatible drivers/servers.
+ *
+ * Copyright Rusty Russell IBM Corporation 2007. */
+#include <linux/types.h>
+
+/* This marks a buffer as continuing via the next field. */
+#define VRING_DESC_F_NEXT 1
+/* This marks a buffer as write-only (otherwise read-only). */
+#define VRING_DESC_F_WRITE 2
+
+/* This means don't notify other side when buffer added. */
+#define VRING_USED_F_NO_NOTIFY 1
+/* This means don't interrupt guest when buffer consumed. */
+#define VRING_AVAIL_F_NO_INTERRUPT 1
+
+/* Virtio ring descriptors: 16 bytes. These can chain together via "next". */
+struct vring_desc
+{
+ /* Address (guest-physical). */
+ __u64 addr;
+ /* Length. */
+ __u32 len;
+ /* The flags as indicated above. */
+ __u16 flags;
+ /* We chain unused descriptors via this, too */
+ __u16 next;
+};
+
+struct vring_avail
+{
+ __u16 flags;
+ __u16 idx;
+ __u16 ring[];
+};
+
+/* u32 is used here for ids for padding reasons. */
+struct vring_used_elem
+{
+ /* Index of start of used descriptor chain. */
+ __u32 id;
+ /* Total length of the descriptor chain which was used (written to) */
+ __u32 len;
+};
+
+struct vring_used
+{
+ __u16 flags;
+ __u16 idx;
+ struct vring_used_elem ring[];
+};
+
+struct vring {
+ unsigned int num;
+
+ struct vring_desc *desc;
+
+ struct vring_avail *avail;
+
+ struct vring_used *used;
+};
+
+/* The standard layout for the ring is a continuous chunk of memory which looks
+ * like this. The used fields will be aligned to a "num+1" boundary.
+ *
+ * struct vring
+ * {
+ * // The actual descriptors (16 bytes each)
+ * struct vring_desc desc[num];
+ *
+ * // A ring of available descriptor heads with free-running index.
+ * __u16 avail_flags;
+ * __u16 avail_idx;
+ * __u16 available[num];
+ *
+ * // Padding so a correctly-chosen num value will cache-align used_idx.
+ * char pad[sizeof(struct vring_desc) - sizeof(avail_flags)];
+ *
+ * // A ring of used descriptor heads with free-running index.
+ * __u16 used_flags;
+ * __u16 used_idx;
+ * struct vring_used_elem used[num];
+ * };
+ */
+static inline void vring_init(struct vring *vr, unsigned int num, void *p)
+{
+ vr->num = num;
+ vr->desc = p;
+ vr->avail = p + num*sizeof(struct vring);
+ vr->used = p + (num+1)*(sizeof(struct vring) + sizeof(__u16));
+}
+
+static inline unsigned vring_size(unsigned int num)
+{
+ return (num + 1) * (sizeof(struct vring_desc) + sizeof(__u16))
+ + sizeof(__u32) + num * sizeof(struct vring_used_elem);
+}
+
+#ifdef __KERNEL__
+#include <linux/irqreturn.h>
+struct virtio_device;
+struct virtqueue;
+
+struct virtqueue *vring_new_virtqueue(unsigned int num,
+ struct virtio_device *vdev,
+ void *pages,
+ void (*notify)(struct virtqueue *vq),
+ bool (*callback)(struct virtqueue *vq));
+void vring_del_virtqueue(struct virtqueue *vq);
+
+irqreturn_t vring_interrupt(int irq, void *_vq);
+#endif /* __KERNEL__ */
+#endif /* _LINUX_VIRTIO_RING_H */
diff --git a/include/video/Kbuild b/include/video/Kbuild
index 53a6c7310e6..0e406f730c2 100644
--- a/include/video/Kbuild
+++ b/include/video/Kbuild
@@ -1 +1,2 @@
unifdef-y += sisfb.h uvesafb.h
+unifdef-y += edid.h
diff --git a/include/video/edid.h b/include/video/edid.h
index f6a42d6c2e2..928c342b33d 100644
--- a/include/video/edid.h
+++ b/include/video/edid.h
@@ -1,17 +1,16 @@
#ifndef __linux_video_edid_h__
#define __linux_video_edid_h__
-#ifdef __KERNEL__
-
+#if !defined(__KERNEL__) || defined(CONFIG_X86)
-#ifdef CONFIG_X86
struct edid_info {
unsigned char dummy[128];
};
+#ifdef __KERNEL__
extern struct edid_info edid_info;
-#endif /* CONFIG_X86 */
-
#endif /* __KERNEL__ */
+#endif
+
#endif /* __linux_video_edid_h__ */