1 /* $OpenBSD: pci.h,v 1.8 2020/09/08 20:09:43 kettenis 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 #define PCI_MODE1_ENABLE 0x80000000UL 20 #define PCI_MODE1_ADDRESS_REG 0x0cf8 21 #define PCI_MODE1_DATA_REG 0x0cfc 22 #define PCI_CONFIG_MAX_DEV 32 23 #define PCI_MAX_BARS 6 24 25 #define PCI_BAR_TYPE_IO 0x0 26 #define PCI_BAR_TYPE_MMIO 0x1 27 28 #define PCI_MAX_PIC_IRQS 10 29 30 typedef int (*pci_cs_fn_t)(int dir, uint8_t reg, uint32_t *data); 31 typedef int (*pci_iobar_fn_t)(int dir, uint16_t reg, uint32_t *data, uint8_t *, 32 void *, uint8_t); 33 typedef int (*pci_mmiobar_fn_t)(int dir, uint32_t ofs, uint32_t *data); 34 35 36 struct pci_dev { 37 union { 38 uint32_t pd_cfg_space[PCI_CONFIG_SPACE_SIZE / 4]; 39 struct { 40 uint16_t pd_vid; 41 uint16_t pd_did; 42 uint16_t pd_cmd; 43 uint16_t pd_status; 44 uint8_t pd_rev; 45 uint8_t pd_prog_if; 46 uint8_t pd_subclass; 47 uint8_t pd_class; 48 uint8_t pd_cache_size; 49 uint8_t pd_lat_timer; 50 uint8_t pd_header_type; 51 uint8_t pd_bist; 52 uint32_t pd_bar[PCI_MAX_BARS]; 53 uint32_t pd_cardbus_cis; 54 uint16_t pd_subsys_vid; 55 uint16_t pd_subsys_id; 56 uint32_t pd_exp_rom_addr; 57 uint8_t pd_cap; 58 uint32_t pd_reserved0 : 24; 59 uint32_t pd_reserved1; 60 uint8_t pd_irq; 61 uint8_t pd_int; 62 uint8_t pd_min_grant; 63 uint8_t pd_max_grant; 64 } __packed; 65 }; 66 uint8_t pd_bar_ct; 67 pci_cs_fn_t pd_csfunc; 68 69 uint8_t pd_bartype[PCI_MAX_BARS]; 70 uint32_t pd_barsize[PCI_MAX_BARS]; 71 void *pd_barfunc[PCI_MAX_BARS]; 72 void *pd_bar_cookie[PCI_MAX_BARS]; 73 }; 74 75 struct pci { 76 uint8_t pci_dev_ct; 77 uint64_t pci_next_mmio_bar; 78 uint64_t pci_next_io_bar; 79 uint8_t pci_next_pic_irq; 80 uint32_t pci_addr_reg; 81 uint32_t pci_data_reg; 82 83 struct pci_dev pci_devices[PCI_CONFIG_MAX_DEV]; 84 }; 85 86 void pci_handle_address_reg(struct vm_run_params *); 87 void pci_handle_data_reg(struct vm_run_params *); 88 uint8_t pci_handle_io(struct vm_run_params *); 89 void pci_init(void); 90 int pci_add_device(uint8_t *, uint16_t, uint16_t, uint8_t, uint8_t, uint16_t, 91 uint16_t, uint8_t, pci_cs_fn_t); 92 int pci_add_bar(uint8_t, uint32_t, void *, void *); 93 int pci_set_bar_fn(uint8_t, uint8_t, void *, void *); 94 uint8_t pci_get_dev_irq(uint8_t); 95 int pci_dump(int); 96 int pci_restore(int); 97