/* $OpenBSD: pci.h,v 1.12 2024/10/02 17:05:56 dv Exp $ */ /* * Copyright (c) 2015 Mike Larkin * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include "vmd.h" #ifndef _PCI_H_ #define _PCI_H_ #define PCI_MODE1_ENABLE 0x80000000UL #define PCI_MODE1_ADDRESS_REG 0x0cf8 #define PCI_MODE1_DATA_REG 0x0cfc #define PCI_CONFIG_MAX_DEV 32 #define PCI_MAX_BARS 6 #define PCI_BAR_TYPE_IO 0x0 #define PCI_BAR_TYPE_MMIO 0x1 #define PCI_MMIO_BAR_BASE 0xF0000000ULL #define PCI_MMIO_BAR_END 0xFFDFFFFFULL /* 2 MiB below 4 GiB */ #define PCI_MAX_PIC_IRQS 10 typedef int (*pci_cs_fn_t)(int dir, uint8_t reg, uint32_t *data); typedef int (*pci_iobar_fn_t)(int dir, uint16_t reg, uint32_t *data, uint8_t *, void *, uint8_t); typedef int (*pci_mmiobar_fn_t)(int dir, uint32_t ofs, uint32_t *data); struct pci_dev { union { uint32_t pd_cfg_space[PCI_CONFIG_SPACE_SIZE / 4]; struct { uint16_t pd_vid; uint16_t pd_did; uint16_t pd_cmd; uint16_t pd_status; uint8_t pd_rev; uint8_t pd_prog_if; uint8_t pd_subclass; uint8_t pd_class; uint8_t pd_cache_size; uint8_t pd_lat_timer; uint8_t pd_header_type; uint8_t pd_bist; uint32_t pd_bar[PCI_MAX_BARS]; uint32_t pd_cardbus_cis; uint16_t pd_subsys_vid; uint16_t pd_subsys_id; uint32_t pd_exp_rom_addr; uint8_t pd_cap; uint32_t pd_reserved0 : 24; uint32_t pd_reserved1; uint8_t pd_irq; uint8_t pd_int; uint8_t pd_min_grant; uint8_t pd_max_grant; } __packed; }; uint8_t pd_bar_ct; pci_cs_fn_t pd_csfunc; uint8_t pd_bartype[PCI_MAX_BARS]; uint32_t pd_barsize[PCI_MAX_BARS]; void *pd_barfunc[PCI_MAX_BARS]; void *pd_bar_cookie[PCI_MAX_BARS]; }; struct pci { uint8_t pci_dev_ct; uint64_t pci_next_mmio_bar; uint64_t pci_next_io_bar; uint8_t pci_next_pic_irq; uint32_t pci_addr_reg; uint32_t pci_data_reg; struct pci_dev pci_devices[PCI_CONFIG_MAX_DEV]; }; int pci_find_first_device(uint16_t); void pci_init(void); int pci_add_device(uint8_t *, uint16_t, uint16_t, uint8_t, uint8_t, uint16_t, uint16_t, uint8_t, pci_cs_fn_t); int pci_add_bar(uint8_t, uint32_t, void *, void *); int pci_set_bar_fn(uint8_t, uint8_t, void *, void *); uint8_t pci_get_dev_irq(uint8_t); int pci_dump(int); int pci_restore(int); #ifdef __amd64__ void pci_handle_address_reg(struct vm_run_params *); void pci_handle_data_reg(struct vm_run_params *); uint8_t pci_handle_io(struct vm_run_params *); #endif /* __amd64__ */ #endif /* _PCI_H_ */