diff options
Diffstat (limited to 'usr.sbin/bhyve/pci_emul.h')
| -rw-r--r-- | usr.sbin/bhyve/pci_emul.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/pci_emul.h b/usr.sbin/bhyve/pci_emul.h new file mode 100644 index 0000000..e924475 --- /dev/null +++ b/usr.sbin/bhyve/pci_emul.h @@ -0,0 +1,216 @@ +/*- + * Copyright (c) 2011 NetApp, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _PCI_EMUL_H_ +#define _PCI_EMUL_H_ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/kernel.h> + +#include <dev/pci/pcireg.h> + +#include <assert.h> + +#define PCI_BARMAX PCIR_MAX_BAR_0 /* BAR registers in a Type 0 header */ +#define PCIY_RESERVED 0x00 + +struct vmctx; +struct pci_devinst; +struct memory_region; + +struct pci_devemu { + char *pe_emu; /* Name of device emulation */ + + /* instance creation */ + int (*pe_init)(struct vmctx *, struct pci_devinst *, + char *opts); + + /* config space read/write callbacks */ + int (*pe_cfgwrite)(struct vmctx *ctx, int vcpu, + struct pci_devinst *pi, int offset, + int bytes, uint32_t val); + int (*pe_cfgread)(struct vmctx *ctx, int vcpu, + struct pci_devinst *pi, int offset, + int bytes, uint32_t *retval); + + /* BAR read/write callbacks */ + void (*pe_barwrite)(struct vmctx *ctx, int vcpu, + struct pci_devinst *pi, int baridx, + uint64_t offset, int size, uint64_t value); + uint64_t (*pe_barread)(struct vmctx *ctx, int vcpu, + struct pci_devinst *pi, int baridx, + uint64_t offset, int size); +}; +#define PCI_EMUL_SET(x) DATA_SET(pci_devemu_set, x); + +enum pcibar_type { + PCIBAR_NONE, + PCIBAR_IO, + PCIBAR_MEM32, + PCIBAR_MEM64, + PCIBAR_MEMHI64 +}; + +struct pcibar { + enum pcibar_type type; /* io or memory */ + uint64_t size; + uint64_t addr; +}; + +#define PI_NAMESZ 40 + +struct msix_table_entry { + uint64_t addr; + uint32_t msg_data; + uint32_t vector_control; +} __packed; + +/* + * In case the structure is modified to hold extra information, use a define + * for the size that should be emulated. + */ +#define MSIX_TABLE_ENTRY_SIZE 16 +#define MAX_MSIX_TABLE_SIZE 2048 + +struct pci_devinst { + struct pci_devemu *pi_d; + struct vmctx *pi_vmctx; + uint8_t pi_bus, pi_slot, pi_func; + uint8_t pi_lintr_pin; + char pi_name[PI_NAMESZ]; + uint16_t pi_iobase; + int pi_bar_getsize; + + struct { + int enabled; + int cpu; + int vector; + int msgnum; + } pi_msi; + + struct { + int enabled; + int table_bar; + int pba_bar; + size_t table_offset; + size_t table_size; + int table_count; + size_t pba_offset; + struct msix_table_entry table[MAX_MSIX_TABLE_SIZE]; + } pi_msix; + + void *pi_arg; /* devemu-private data */ + + u_char pi_cfgdata[PCI_REGMAX + 1]; + struct pcibar pi_bar[PCI_BARMAX + 1]; +}; + +struct msicap { + uint8_t capid; + uint8_t nextptr; + uint16_t msgctrl; + uint32_t addrlo; + uint32_t addrhi; + uint16_t msgdata; +} __packed; + +struct msixcap { + uint8_t capid; + uint8_t nextptr; + uint16_t msgctrl; + uint32_t table_offset; + uint32_t pba_offset; +} __packed; + +void init_pci(struct vmctx *ctx); +void msicap_cfgwrite(struct pci_devinst *pi, int capoff, int offset, + int bytes, uint32_t val); +void msixcap_cfgwrite(struct pci_devinst *pi, int capoff, int offset, + int bytes, uint32_t val); +void pci_callback(void); +int pci_emul_alloc_bar(struct pci_devinst *pdi, int idx, + enum pcibar_type type, uint64_t size); +int pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx, + uint64_t hostbase, enum pcibar_type type, uint64_t size); +int pci_emul_add_msicap(struct pci_devinst *pi, int msgnum); +int pci_is_legacy(struct pci_devinst *pi); +void pci_generate_msi(struct pci_devinst *pi, int msgnum); +void pci_generate_msix(struct pci_devinst *pi, int msgnum); +void pci_lintr_assert(struct pci_devinst *pi); +void pci_lintr_deassert(struct pci_devinst *pi); +int pci_lintr_request(struct pci_devinst *pi, int ivec); +int pci_msi_enabled(struct pci_devinst *pi); +int pci_msix_enabled(struct pci_devinst *pi); +int pci_msi_msgnum(struct pci_devinst *pi); +void pci_parse_slot(char *opt, int legacy); +void pci_populate_msicap(struct msicap *cap, int msgs, int nextptr); + +static __inline void +pci_set_cfgdata8(struct pci_devinst *pi, int offset, uint8_t val) +{ + assert(offset <= PCI_REGMAX); + *(uint8_t *)(pi->pi_cfgdata + offset) = val; +} + +static __inline void +pci_set_cfgdata16(struct pci_devinst *pi, int offset, uint16_t val) +{ + assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0); + *(uint16_t *)(pi->pi_cfgdata + offset) = val; +} + +static __inline void +pci_set_cfgdata32(struct pci_devinst *pi, int offset, uint32_t val) +{ + assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0); + *(uint32_t *)(pi->pi_cfgdata + offset) = val; +} + +static __inline uint8_t +pci_get_cfgdata8(struct pci_devinst *pi, int offset) +{ + assert(offset <= PCI_REGMAX); + return (*(uint8_t *)(pi->pi_cfgdata + offset)); +} + +static __inline uint16_t +pci_get_cfgdata16(struct pci_devinst *pi, int offset) +{ + assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0); + return (*(uint16_t *)(pi->pi_cfgdata + offset)); +} + +static __inline uint32_t +pci_get_cfgdata32(struct pci_devinst *pi, int offset) +{ + assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0); + return (*(uint32_t *)(pi->pi_cfgdata + offset)); +} + +#endif /* _PCI_EMUL_H_ */ |
