vmm.ko - kernel module for VT-x, VT-d and hypervisor control bhyve - user-space sequencer and i/o emulation vmmctl - dump of hypervisor register state libvmm - front-end to vmm.ko chardev interface bhyve was designed and implemented by Neel Natu. Thanks to the following folk from NetApp who helped to make this available: Joe CaraDonna Peter Snyder Jeff Heller Sandeep Mann Steve Miller Brian Pawlowski
172 lines
4.8 KiB
C
172 lines
4.8 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PCI_EMUL_H_
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#define _PCI_EMUL_H_
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/kernel.h>
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#include <dev/pci/pcireg.h>
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#include <assert.h>
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#define PCI_BARMAX PCIR_MAX_BAR_0 /* BAR registers in a Type 0 header */
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#define PCIY_RESERVED 0x00
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struct vmctx;
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struct pci_devinst;
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struct pci_devemu {
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char *pe_emu; /* Name of device emulation */
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/* instance creation */
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int (*pe_init)(struct vmctx *, struct pci_devinst *, char *opts);
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/* config space read/write callbacks */
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int (*pe_cfgwrite)(struct vmctx *ctx, int vcpu,
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struct pci_devinst *pi, int offset,
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int bytes, uint32_t val);
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int (*pe_cfgread)(struct vmctx *ctx, int vcpu,
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struct pci_devinst *pi, int offset,
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int bytes, uint32_t *retval);
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/* I/O space read/write callbacks */
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void (*pe_iow)(struct pci_devinst *pi, int baridx,
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int offset, int size, uint32_t value);
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uint32_t (*pe_ior)(struct pci_devinst *pi, int baridx,
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int offset, int size);
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};
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#define PCI_EMUL_SET(x) DATA_SET(pci_devemu_set, x);
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enum pcibar_type {
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PCIBAR_NONE,
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PCIBAR_IO,
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PCIBAR_MEM32,
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PCIBAR_MEM64,
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PCIBAR_MEMHI64
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};
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struct pcibar {
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enum pcibar_type type; /* io or memory */
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uint64_t size;
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uint64_t addr;
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};
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#define PI_NAMESZ 40
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struct pci_devinst {
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struct pci_devemu *pi_d;
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struct vmctx *pi_vmctx;
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uint8_t pi_bus, pi_slot, pi_func;
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char pi_name[PI_NAMESZ];
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uint16_t pi_iobase;
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int pi_bar_getsize;
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struct {
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int enabled;
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int cpu;
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int vector;
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int msgnum;
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} pi_msi;
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void *pi_arg; /* devemu-private data */
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u_char pi_cfgdata[PCI_REGMAX + 1];
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struct pcibar pi_bar[PCI_BARMAX + 1];
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};
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struct msicap {
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uint8_t capid;
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uint8_t nextptr;
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uint16_t msgctrl;
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uint32_t addrlo;
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uint32_t addrhi;
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uint16_t msgdata;
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} __packed;
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void init_pci(struct vmctx *ctx);
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void pci_parse_slot(char *opt);
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void pci_parse_name(char *opt);
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void pci_callback(void);
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int pci_emul_alloc_bar(struct pci_devinst *pdi, int idx, uint64_t hostbase,
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enum pcibar_type type, uint64_t size);
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int pci_emul_add_msicap(struct pci_devinst *pi, int msgnum);
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void msicap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
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int bytes, uint32_t val);
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void pci_generate_msi(struct pci_devinst *pi, int msgnum);
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int pci_msi_enabled(struct pci_devinst *pi);
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int pci_msi_msgnum(struct pci_devinst *pi);
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void pci_populate_msicap(struct msicap *cap, int msgs, int nextptr);
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static __inline void
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pci_set_cfgdata8(struct pci_devinst *pi, int offset, uint8_t val)
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{
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assert(offset <= PCI_REGMAX);
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*(uint8_t *)(pi->pi_cfgdata + offset) = val;
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}
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static __inline void
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pci_set_cfgdata16(struct pci_devinst *pi, int offset, uint16_t val)
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{
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assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0);
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*(uint16_t *)(pi->pi_cfgdata + offset) = val;
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}
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static __inline void
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pci_set_cfgdata32(struct pci_devinst *pi, int offset, uint32_t val)
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{
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assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0);
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*(uint32_t *)(pi->pi_cfgdata + offset) = val;
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}
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static __inline uint8_t
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pci_get_cfgdata8(struct pci_devinst *pi, int offset)
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{
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assert(offset <= PCI_REGMAX);
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return (*(uint8_t *)(pi->pi_cfgdata + offset));
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}
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static __inline uint16_t
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pci_get_cfgdata16(struct pci_devinst *pi, int offset)
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{
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assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0);
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return (*(uint16_t *)(pi->pi_cfgdata + offset));
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}
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static __inline uint32_t
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pci_get_cfgdata32(struct pci_devinst *pi, int offset)
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{
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assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0);
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return (*(uint32_t *)(pi->pi_cfgdata + offset));
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}
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#endif /* _PCI_EMUL_H_ */
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