4 #include <lunaix/ds/ldga.h>
5 #include <lunaix/ds/llist.h>
6 #include <lunaix/types.h>
9 #define PCI_TPCIBRIDGE 0x1
10 #define PCI_TCARDBRIDGE 0x2
12 #define PCI_VENDOR_INVLD 0xffff
14 #define PCI_REG_VENDOR_DEV 0
15 #define PCI_REG_STATUS_CMD 0x4
16 #define PCI_REG_BAR(num) (0x10 + (num - 1) * 4)
18 #define PCI_DEV_VENDOR(x) ((x)&0xffff)
19 #define PCI_DEV_DEVID(x) ((x) >> 16)
20 #define PCI_INTR_IRQ(x) ((x)&0xff)
21 #define PCI_INTR_PIN(x) (((x)&0xff00) >> 8)
22 #define PCI_DEV_CLASS(x) ((x) >> 8)
23 #define PCI_DEV_REV(x) (((x)&0xff))
24 #define PCI_BUS_NUM(x) (((x) >> 16) & 0xff)
25 #define PCI_SLOT_NUM(x) (((x) >> 11) & 0x1f)
26 #define PCI_FUNCT_NUM(x) (((x) >> 8) & 0x7)
28 #define PCI_BAR_MMIO(x) (!((x)&0x1))
29 #define PCI_BAR_CACHEABLE(x) ((x)&0x8)
30 #define PCI_BAR_TYPE(x) ((x)&0x6)
31 #define PCI_BAR_ADDR_MM(x) ((x) & ~0xf)
32 #define PCI_BAR_ADDR_IO(x) ((x) & ~0x3)
34 #define PCI_MSI_ADDR(msi_base) ((msi_base) + 4)
35 #define PCI_MSI_DATA(msi_base, offset) ((msi_base) + 8 + offset)
36 #define PCI_MSI_MASK(msi_base, offset) ((msi_base) + 0xc + offset)
38 #define MSI_CAP_64BIT 0x80
39 #define MSI_CAP_MASK 0x100
40 #define MSI_CAP_ENABLE 0x1
42 #define PCI_RCMD_DISABLE_INTR (1 << 10)
43 #define PCI_RCMD_FAST_B2B (1 << 9)
44 #define PCI_RCMD_BUS_MASTER (1 << 2)
45 #define PCI_RCMD_MM_ACCESS (1 << 1)
46 #define PCI_RCMD_IO_ACCESS 1
48 #define PCI_ADDRESS(bus, dev, funct) \
49 (((bus)&0xff) << 16) | (((dev)&0xff) << 11) | (((funct)&0xff) << 8) | \
52 typedef unsigned int pci_reg_t;
54 // PCI device header format
55 // Ref: "PCI Local Bus Specification, Rev.3, Section 6.1"
57 #define BAR_TYPE_MMIO 0x1
58 #define BAR_TYPE_CACHABLE 0x2
59 #define PCI_DRV_NAME_LEN 32
61 #define EXPORT_PCI_DEVICE(name_, class, vendor_id, dev_id, init_fn) \
62 static struct pci_driver pcidev_##name_ = \
63 (struct pci_driver){ .name = #name_, \
64 .create_driver = (init_fn), \
65 .dev_info = ((vendor_id) << 16) | (dev_id), \
66 .dev_class = (class) }; \
67 export_ldga_el(pci_dev_drivers, name_, ptr_t, &pcidev_##name_)
80 struct llist_header dev_chain;
88 struct pci_driver* type;
91 struct pci_base_addr bar[6];
94 typedef void* (*pci_drv_init)(struct pci_device*);
98 struct llist_header drivers;
101 pci_drv_init create_driver;
102 char name[PCI_DRV_NAME_LEN];
106 * @brief 初始化PCI。这主要是通过扫描PCI总线进行拓扑重建。注意,该
107 * 初始化不包括针对每个设备的初始化,因为那是设备驱动的事情。
114 * @brief 根据类型代码(Class Code)去在拓扑中寻找一个设备
115 * 类型代码请参阅: PCI LB Spec. Appendix D.
117 * @return struct pci_device*
119 struct pci_device* pci_get_device_by_class(u32_t class);
122 * @brief 根据设备商ID和设备ID,在拓扑中寻找一个设备
126 * @return struct pci_device*
129 pci_get_device_by_id(u16_t vendorId, u16_t deviceId);
132 * @brief 初始化PCI设备的基地址寄存器。返回由该基地址代表的,
133 * 设备所使用的MMIO或I/O地址空间的,大小。
134 * 参阅:PCI LB Spec. (Rev 3) Section 6.2.5.1, Implementation Note.
136 * @param dev The PCI device
137 * @param bar_out Value in BAR
138 * @param bar_num The index of BAR (starting from 1)
142 pci_bar_sizing(struct pci_device* dev, u32_t* bar_out, u32_t bar_num);
145 pci_add_driver(const char* name,
152 pci_bind_driver(struct pci_device* pci_dev);
155 pci_probe_bar_info(struct pci_device* device);
158 pci_probe_msi_info(struct pci_device* device);
160 #endif /* __LUNAIX_PCI_H */