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Annotation of qemu/linux-headers/asm-powerpc/kvm_para.h, revision 1.1.1.2

1.1       root        1: /*
                      2:  * This program is free software; you can redistribute it and/or modify
                      3:  * it under the terms of the GNU General Public License, version 2, as
                      4:  * published by the Free Software Foundation.
                      5:  *
                      6:  * This program is distributed in the hope that it will be useful,
                      7:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
                      8:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                      9:  * GNU General Public License for more details.
                     10:  *
                     11:  * You should have received a copy of the GNU General Public License
                     12:  * along with this program; if not, write to the Free Software
                     13:  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
                     14:  *
                     15:  * Copyright IBM Corp. 2008
                     16:  *
                     17:  * Authors: Hollis Blanchard <[email protected]>
                     18:  */
                     19: 
                     20: #ifndef __POWERPC_KVM_PARA_H__
                     21: #define __POWERPC_KVM_PARA_H__
                     22: 
                     23: #include <linux/types.h>
                     24: 
1.1.1.2 ! root       25: /*
        !            26:  * Additions to this struct must only occur at the end, and should be
        !            27:  * accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present
        !            28:  * (albeit not necessarily relevant to the current target hardware platform).
        !            29:  *
        !            30:  * Struct fields are always 32 or 64 bit aligned, depending on them being 32
        !            31:  * or 64 bit wide respectively.
        !            32:  *
        !            33:  * See Documentation/virtual/kvm/ppc-pv.txt
        !            34:  */
1.1       root       35: struct kvm_vcpu_arch_shared {
                     36:        __u64 scratch1;
                     37:        __u64 scratch2;
                     38:        __u64 scratch3;
                     39:        __u64 critical;         /* Guest may not get interrupts if == r1 */
                     40:        __u64 sprg0;
                     41:        __u64 sprg1;
                     42:        __u64 sprg2;
                     43:        __u64 sprg3;
                     44:        __u64 srr0;
                     45:        __u64 srr1;
1.1.1.2 ! root       46:        __u64 dar;              /* dear on BookE */
1.1       root       47:        __u64 msr;
                     48:        __u32 dsisr;
                     49:        __u32 int_pending;      /* Tells the guest if we have an interrupt */
                     50:        __u32 sr[16];
1.1.1.2 ! root       51:        __u32 mas0;
        !            52:        __u32 mas1;
        !            53:        __u64 mas7_3;
        !            54:        __u64 mas2;
        !            55:        __u32 mas4;
        !            56:        __u32 mas6;
        !            57:        __u32 esr;
        !            58:        __u32 pir;
        !            59: 
        !            60:        /*
        !            61:         * SPRG4-7 are user-readable, so we can only keep these consistent
        !            62:         * between the shared area and the real registers when there's an
        !            63:         * intervening exit to KVM.  This also applies to SPRG3 on some
        !            64:         * chips.
        !            65:         *
        !            66:         * This suffices for access by guest userspace, since in PR-mode
        !            67:         * KVM, an exit must occur when changing the guest's MSR[PR].
        !            68:         * If the guest kernel writes to SPRG3-7 via the shared area, it
        !            69:         * must also use the shared area for reading while in kernel space.
        !            70:         */
        !            71:        __u64 sprg4;
        !            72:        __u64 sprg5;
        !            73:        __u64 sprg6;
        !            74:        __u64 sprg7;
1.1       root       75: };
                     76: 
                     77: #define KVM_SC_MAGIC_R0                0x4b564d21 /* "KVM!" */
                     78: #define HC_VENDOR_KVM          (42 << 16)
                     79: #define HC_EV_SUCCESS          0
                     80: #define HC_EV_UNIMPLEMENTED    12
                     81: 
                     82: #define KVM_FEATURE_MAGIC_PAGE 1
                     83: 
1.1.1.2 ! root       84: #define KVM_MAGIC_FEAT_SR              (1 << 0)
        !            85: 
        !            86: /* MASn, ESR, PIR, and high SPRGs */
        !            87: #define KVM_MAGIC_FEAT_MAS0_TO_SPRG7   (1 << 1)
1.1       root       88: 
                     89: 
                     90: #endif /* __POWERPC_KVM_PARA_H__ */

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