[PATCH] i386: vMI backend for paravirt-ops

Fairly straightforward implementation of VMI backend for paravirt-ops.

[Adrian Bunk: some cleanups]

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>

2 files changed, 263 insertions, 0 deletions

diff --git a/include/asm-i386/timer.h b/include/asm-i386/timer.h
index d0ebd05f851..1ee64e34cd3 100644
--- a/include/asm-i386/timer.h
+++ b/include/asm-i386/timer.h
@@ -8,6 +8,7 @@ void setup_pit_timer(void);
 /* Modifiers for buggy PIT handling */
 extern int pit_latch_buggy;
 extern int timer_ack;
+extern int no_timer_check;
 extern int recalibrate_cpu_khz(void);
 
 #endif
diff --git a/include/asm-i386/vmi.h b/include/asm-i386/vmi.h
new file mode 100644
index 00000000000..43c89333037
--- /dev/null
+++ b/include/asm-i386/vmi.h
@@ -0,0 +1,262 @@
+/*
+ * VMI interface definition
+ *
+ * Copyright (C) 2005, VMware, Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Maintained by: Zachary Amsden zach@vmware.com
+ *
+ */
+#include <linux/types.h>
+
+/*
+ *---------------------------------------------------------------------
+ *
+ *  VMI Option ROM API
+ *
+ *---------------------------------------------------------------------
+ */
+#define VMI_SIGNATURE 0x696d5663   /* "cVmi" */
+
+#define PCI_VENDOR_ID_VMWARE            0x15AD
+#define PCI_DEVICE_ID_VMWARE_VMI        0x0801
+
+/*
+ * We use two version numbers for compatibility, with the major
+ * number signifying interface breakages, and the minor number
+ * interface extensions.
+ */
+#define VMI_API_REV_MAJOR       3
+#define VMI_API_REV_MINOR       0
+
+#define VMI_CALL_CPUID			0
+#define VMI_CALL_WRMSR			1
+#define VMI_CALL_RDMSR			2
+#define VMI_CALL_SetGDT			3
+#define VMI_CALL_SetLDT			4
+#define VMI_CALL_SetIDT			5
+#define VMI_CALL_SetTR			6
+#define VMI_CALL_GetGDT			7
+#define VMI_CALL_GetLDT			8
+#define VMI_CALL_GetIDT			9
+#define VMI_CALL_GetTR			10
+#define VMI_CALL_WriteGDTEntry		11
+#define VMI_CALL_WriteLDTEntry		12
+#define VMI_CALL_WriteIDTEntry		13
+#define VMI_CALL_UpdateKernelStack	14
+#define VMI_CALL_SetCR0			15
+#define VMI_CALL_SetCR2			16
+#define VMI_CALL_SetCR3			17
+#define VMI_CALL_SetCR4			18
+#define VMI_CALL_GetCR0			19
+#define VMI_CALL_GetCR2			20
+#define VMI_CALL_GetCR3			21
+#define VMI_CALL_GetCR4			22
+#define VMI_CALL_WBINVD			23
+#define VMI_CALL_SetDR			24
+#define VMI_CALL_GetDR			25
+#define VMI_CALL_RDPMC			26
+#define VMI_CALL_RDTSC			27
+#define VMI_CALL_CLTS			28
+#define VMI_CALL_EnableInterrupts	29
+#define VMI_CALL_DisableInterrupts	30
+#define VMI_CALL_GetInterruptMask	31
+#define VMI_CALL_SetInterruptMask	32
+#define VMI_CALL_IRET			33
+#define VMI_CALL_SYSEXIT		34
+#define VMI_CALL_Halt			35
+#define VMI_CALL_Reboot			36
+#define VMI_CALL_Shutdown		37
+#define VMI_CALL_SetPxE			38
+#define VMI_CALL_SetPxELong		39
+#define VMI_CALL_UpdatePxE		40
+#define VMI_CALL_UpdatePxELong		41
+#define VMI_CALL_MachineToPhysical	42
+#define VMI_CALL_PhysicalToMachine	43
+#define VMI_CALL_AllocatePage		44
+#define VMI_CALL_ReleasePage		45
+#define VMI_CALL_InvalPage		46
+#define VMI_CALL_FlushTLB		47
+#define VMI_CALL_SetLinearMapping	48
+
+#define VMI_CALL_SetIOPLMask		61
+#define VMI_CALL_SetInitialAPState	62
+#define VMI_CALL_APICWrite		63
+#define VMI_CALL_APICRead		64
+#define VMI_CALL_SetLazyMode		73
+
+/*
+ *---------------------------------------------------------------------
+ *
+ * MMU operation flags
+ *
+ *---------------------------------------------------------------------
+ */
+
+/* Flags used by VMI_{Allocate|Release}Page call */
+#define VMI_PAGE_PAE             0x10  /* Allocate PAE shadow */
+#define VMI_PAGE_CLONE           0x20  /* Clone from another shadow */
+#define VMI_PAGE_ZEROED          0x40  /* Page is pre-zeroed */
+
+
+/* Flags shared by Allocate|Release Page and PTE updates */
+#define VMI_PAGE_PT              0x01
+#define VMI_PAGE_PD              0x02
+#define VMI_PAGE_PDP             0x04
+#define VMI_PAGE_PML4            0x08
+
+#define VMI_PAGE_NORMAL          0x00 /* for debugging */
+
+/* Flags used by PTE updates */
+#define VMI_PAGE_CURRENT_AS      0x10 /* implies VMI_PAGE_VA_MASK is valid */
+#define VMI_PAGE_DEFER           0x20 /* may queue update until TLB inval */
+#define VMI_PAGE_VA_MASK         0xfffff000
+
+#ifdef CONFIG_X86_PAE
+#define VMI_PAGE_L1		(VMI_PAGE_PT | VMI_PAGE_PAE | VMI_PAGE_ZEROED)
+#define VMI_PAGE_L2		(VMI_PAGE_PD | VMI_PAGE_PAE | VMI_PAGE_ZEROED)
+#else
+#define VMI_PAGE_L1		(VMI_PAGE_PT | VMI_PAGE_ZEROED)
+#define VMI_PAGE_L2		(VMI_PAGE_PD | VMI_PAGE_ZEROED)
+#endif
+
+/* Flags used by VMI_FlushTLB call */
+#define VMI_FLUSH_TLB            0x01
+#define VMI_FLUSH_GLOBAL         0x02
+
+/*
+ *---------------------------------------------------------------------
+ *
+ *  VMI relocation definitions for ROM call get_reloc
+ *
+ *---------------------------------------------------------------------
+ */
+
+/* VMI Relocation types */
+#define VMI_RELOCATION_NONE     0
+#define VMI_RELOCATION_CALL_REL 1
+#define VMI_RELOCATION_JUMP_REL 2
+#define VMI_RELOCATION_NOP	3
+
+#ifndef __ASSEMBLY__
+struct vmi_relocation_info {
+        unsigned char           *eip;
+        unsigned char           type;
+        unsigned char           reserved[3];
+};
+#endif
+
+
+/*
+ *---------------------------------------------------------------------
+ *
+ *  Generic ROM structures and definitions
+ *
+ *---------------------------------------------------------------------
+ */
+
+#ifndef __ASSEMBLY__
+
+struct vrom_header {
+	u16     rom_signature;  // option ROM signature
+	u8      rom_length;     // ROM length in 512 byte chunks
+	u8      rom_entry[4];   // 16-bit code entry point
+	u8      rom_pad0;       // 4-byte align pad
+	u32     vrom_signature; // VROM identification signature
+	u8      api_version_min;// Minor version of API
+	u8      api_version_maj;// Major version of API
+	u8      jump_slots;     // Number of jump slots
+	u8      reserved1;      // Reserved for expansion
+	u32     virtual_top;    // Hypervisor virtual address start
+	u16     reserved2;      // Reserved for expansion
+	u16	license_offs;	// Offset to License string
+	u16     pci_header_offs;// Offset to PCI OPROM header
+	u16     pnp_header_offs;// Offset to PnP OPROM header
+	u32     rom_pad3;       // PnP reserverd / VMI reserved
+	u8      reserved[96];   // Reserved for headers
+	char    vmi_init[8];    // VMI_Init jump point
+	char    get_reloc[8];   // VMI_GetRelocationInfo jump point
+} __attribute__((packed));
+
+struct pnp_header {
+        char sig[4];
+        char rev;
+        char size;
+        short next;
+        short res;
+        long devID;
+        unsigned short manufacturer_offset;
+        unsigned short product_offset;
+} __attribute__((packed));
+
+struct pci_header {
+        char sig[4];
+        short vendorID;
+        short deviceID;
+        short vpdData;
+        short size;
+        char rev;
+        char class;
+        char subclass;
+        char interface;
+        short chunks;
+        char rom_version_min;
+        char rom_version_maj;
+        char codetype;
+        char lastRom;
+        short reserved;
+} __attribute__((packed));
+
+/* Function prototypes for bootstrapping */
+extern void vmi_init(void);
+extern void vmi_bringup(void);
+extern void vmi_apply_boot_page_allocations(void);
+
+/* State needed to start an application processor in an SMP system. */
+struct vmi_ap_state {
+	u32 cr0;
+	u32 cr2;
+	u32 cr3;
+	u32 cr4;
+
+	u64 efer;
+
+	u32 eip;
+	u32 eflags;
+	u32 eax;
+	u32 ebx;
+	u32 ecx;
+	u32 edx;
+	u32 esp;
+	u32 ebp;
+	u32 esi;
+	u32 edi;
+	u16 cs;
+	u16 ss;
+	u16 ds;
+	u16 es;
+	u16 fs;
+	u16 gs;
+	u16 ldtr;
+
+	u16 gdtr_limit;
+	u32 gdtr_base;
+	u32 idtr_base;
+	u16 idtr_limit;
+};
+
+#endif