1 /* $OpenBSD: pci.h,v 1.9 2021/06/16 16:55:02 dv Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <dev/pci/pcireg.h> 22 23 #include "vmd.h" 24 25 #ifndef _PCI_H_ 26 #define _PCI_H_ 27 28 #define PCI_MODE1_ENABLE 0x80000000UL 29 #define PCI_MODE1_ADDRESS_REG 0x0cf8 30 #define PCI_MODE1_DATA_REG 0x0cfc 31 #define PCI_CONFIG_MAX_DEV 32 32 #define PCI_MAX_BARS 6 33 34 #define PCI_BAR_TYPE_IO 0x0 35 #define PCI_BAR_TYPE_MMIO 0x1 36 37 #define PCI_MAX_PIC_IRQS 10 38 39 typedef int (*pci_cs_fn_t)(int dir, uint8_t reg, uint32_t *data); 40 typedef int (*pci_iobar_fn_t)(int dir, uint16_t reg, uint32_t *data, uint8_t *, 41 void *, uint8_t); 42 typedef int (*pci_mmiobar_fn_t)(int dir, uint32_t ofs, uint32_t *data); 43 44 45 struct pci_dev { 46 union { 47 uint32_t pd_cfg_space[PCI_CONFIG_SPACE_SIZE / 4]; 48 struct { 49 uint16_t pd_vid; 50 uint16_t pd_did; 51 uint16_t pd_cmd; 52 uint16_t pd_status; 53 uint8_t pd_rev; 54 uint8_t pd_prog_if; 55 uint8_t pd_subclass; 56 uint8_t pd_class; 57 uint8_t pd_cache_size; 58 uint8_t pd_lat_timer; 59 uint8_t pd_header_type; 60 uint8_t pd_bist; 61 uint32_t pd_bar[PCI_MAX_BARS]; 62 uint32_t pd_cardbus_cis; 63 uint16_t pd_subsys_vid; 64 uint16_t pd_subsys_id; 65 uint32_t pd_exp_rom_addr; 66 uint8_t pd_cap; 67 uint32_t pd_reserved0 : 24; 68 uint32_t pd_reserved1; 69 uint8_t pd_irq; 70 uint8_t pd_int; 71 uint8_t pd_min_grant; 72 uint8_t pd_max_grant; 73 } __packed; 74 }; 75 uint8_t pd_bar_ct; 76 pci_cs_fn_t pd_csfunc; 77 78 uint8_t pd_bartype[PCI_MAX_BARS]; 79 uint32_t pd_barsize[PCI_MAX_BARS]; 80 void *pd_barfunc[PCI_MAX_BARS]; 81 void *pd_bar_cookie[PCI_MAX_BARS]; 82 }; 83 84 struct pci { 85 uint8_t pci_dev_ct; 86 uint64_t pci_next_mmio_bar; 87 uint64_t pci_next_io_bar; 88 uint8_t pci_next_pic_irq; 89 uint32_t pci_addr_reg; 90 uint32_t pci_data_reg; 91 92 struct pci_dev pci_devices[PCI_CONFIG_MAX_DEV]; 93 }; 94 95 void pci_handle_address_reg(struct vm_run_params *); 96 void pci_handle_data_reg(struct vm_run_params *); 97 uint8_t pci_handle_io(struct vm_run_params *); 98 void pci_init(void); 99 int pci_add_device(uint8_t *, uint16_t, uint16_t, uint8_t, uint8_t, uint16_t, 100 uint16_t, uint8_t, pci_cs_fn_t); 101 int pci_add_bar(uint8_t, uint32_t, void *, void *); 102 int pci_set_bar_fn(uint8_t, uint8_t, void *, void *); 103 uint8_t pci_get_dev_irq(uint8_t); 104 int pci_dump(int); 105 int pci_restore(int); 106 107 #endif /* _PCI_H_ */ 108