108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/* $OpenBSD: pci.h,v 1.9 2021/06/16 16:55:02 dv Exp $ */
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/*
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* Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <dev/pci/pcireg.h>
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#include "vmd.h"
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#ifndef _PCI_H_
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#define _PCI_H_
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#define PCI_MODE1_ENABLE 0x80000000UL
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#define PCI_MODE1_ADDRESS_REG 0x0cf8
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#define PCI_MODE1_DATA_REG 0x0cfc
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#define PCI_CONFIG_MAX_DEV 32
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#define PCI_MAX_BARS 6
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#define PCI_BAR_TYPE_IO 0x0
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#define PCI_BAR_TYPE_MMIO 0x1
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#define PCI_MAX_PIC_IRQS 10
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typedef int (*pci_cs_fn_t)(int dir, uint8_t reg, uint32_t *data);
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typedef int (*pci_iobar_fn_t)(int dir, uint16_t reg, uint32_t *data, uint8_t *,
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void *, uint8_t);
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typedef int (*pci_mmiobar_fn_t)(int dir, uint32_t ofs, uint32_t *data);
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struct pci_dev {
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union {
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uint32_t pd_cfg_space[PCI_CONFIG_SPACE_SIZE / 4];
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struct {
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uint16_t pd_vid;
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uint16_t pd_did;
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uint16_t pd_cmd;
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uint16_t pd_status;
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uint8_t pd_rev;
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uint8_t pd_prog_if;
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uint8_t pd_subclass;
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uint8_t pd_class;
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uint8_t pd_cache_size;
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uint8_t pd_lat_timer;
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uint8_t pd_header_type;
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uint8_t pd_bist;
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uint32_t pd_bar[PCI_MAX_BARS];
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uint32_t pd_cardbus_cis;
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uint16_t pd_subsys_vid;
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uint16_t pd_subsys_id;
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uint32_t pd_exp_rom_addr;
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uint8_t pd_cap;
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uint32_t pd_reserved0 : 24;
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uint32_t pd_reserved1;
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uint8_t pd_irq;
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uint8_t pd_int;
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uint8_t pd_min_grant;
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uint8_t pd_max_grant;
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} __packed;
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};
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uint8_t pd_bar_ct;
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pci_cs_fn_t pd_csfunc;
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uint8_t pd_bartype[PCI_MAX_BARS];
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uint32_t pd_barsize[PCI_MAX_BARS];
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void *pd_barfunc[PCI_MAX_BARS];
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void *pd_bar_cookie[PCI_MAX_BARS];
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};
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struct pci {
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uint8_t pci_dev_ct;
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uint64_t pci_next_mmio_bar;
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uint64_t pci_next_io_bar;
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uint8_t pci_next_pic_irq;
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uint32_t pci_addr_reg;
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uint32_t pci_data_reg;
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struct pci_dev pci_devices[PCI_CONFIG_MAX_DEV];
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};
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void pci_handle_address_reg(struct vm_run_params *);
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void pci_handle_data_reg(struct vm_run_params *);
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uint8_t pci_handle_io(struct vm_run_params *);
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void pci_init(void);
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int pci_add_device(uint8_t *, uint16_t, uint16_t, uint8_t, uint8_t, uint16_t,
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uint16_t, uint8_t, pci_cs_fn_t);
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int pci_add_bar(uint8_t, uint32_t, void *, void *);
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int pci_set_bar_fn(uint8_t, uint8_t, void *, void *);
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uint8_t pci_get_dev_irq(uint8_t);
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int pci_dump(int);
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int pci_restore(int);
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#endif /* _PCI_H_ */
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