X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/ea77b9c3fc7fb9bf9d7f9604fc187c8049212a2a..1fe5f5eb5378a47bf0f3451762743c162e40faad:/lunaix-os/hal/pci.c diff --git a/lunaix-os/hal/pci.c b/lunaix-os/hal/pci.c index aa6acd1..1457aa1 100644 --- a/lunaix-os/hal/pci.c +++ b/lunaix-os/hal/pci.c @@ -8,9 +8,10 @@ * @copyright Copyright (c) 2022 * */ -#include -#include #include +#include + +#include #include #include #include @@ -18,7 +19,8 @@ LOG_MODULE("PCI") -static struct llist_header pci_devices; +static DEFINE_LLIST(pci_devices); +static DEFINE_LLIST(pci_drivers); void pci_probe_msi_info(struct pci_device* device); @@ -26,7 +28,7 @@ pci_probe_msi_info(struct pci_device* device); void pci_probe_device(int bus, int dev, int funct) { - uint32_t base = PCI_ADDRESS(bus, dev, funct); + u32_t base = PCI_ADDRESS(bus, dev, funct); pci_reg_t reg1 = pci_read_cspace(base, 0); // Vendor=0xffff则表示设备不存在 @@ -66,6 +68,23 @@ pci_probe_device(int bus, int dev, int funct) pci_probe_bar_info(device); llist_append(&pci_devices, &device->dev_chain); + + if (!pci_bind_driver(device)) { + kprintf(KWARN "dev.%d:%d:%d %x:%x unknown device\n", + bus, + dev, + funct, + PCI_DEV_VENDOR(reg1), + PCI_DEV_DEVID(reg1)); + } else { + kprintf("dev.%d:%d:%d %x:%x %s\n", + bus, + dev, + funct, + PCI_DEV_VENDOR(reg1), + PCI_DEV_DEVID(reg1), + device->driver.type->name); + } } void @@ -73,7 +92,7 @@ pci_probe() { // 暴力扫描所有PCI设备 // XXX: 尽管最多会有256条PCI总线，但就目前而言，只考虑bus #0就足够了 - for (int bus = 0; bus < 1; bus++) { + for (int bus = 0; bus < 256; bus++) { for (int dev = 0; dev < 32; dev++) { pci_probe_device(bus, dev, 0); } @@ -83,7 +102,7 @@ pci_probe() void pci_probe_bar_info(struct pci_device* device) { - uint32_t bar; + u32_t bar; struct pci_base_addr* ba; for (size_t i = 0; i < 6; i++) { ba = &device->bar[i]; @@ -113,7 +132,7 @@ pci_probe_msi_info(struct pci_device* device) } pci_reg_t cap_ptr = pci_read_cspace(device->cspace_base, 0x34) & 0xff; - uint32_t cap_hdr; + u32_t cap_hdr; while (cap_ptr) { cap_hdr = pci_read_cspace(device->cspace_base, cap_ptr); @@ -126,7 +145,7 @@ pci_probe_msi_info(struct pci_device* device) } } -void +static void __pci_read_cspace(struct twimap* map) { struct pci_device* pcidev = (struct pci_device*)(map->data); @@ -139,21 +158,21 @@ __pci_read_cspace(struct twimap* map) map->size_acc = 256; } -void +static void __pci_read_revid(struct twimap* map) { int class = twimap_data(map, struct pci_device*)->class_info; twimap_printf(map, "0x%x", PCI_DEV_REV(class)); } -void +static void __pci_read_class(struct twimap* map) { int class = twimap_data(map, struct pci_device*)->class_info; twimap_printf(map, "0x%x", PCI_DEV_CLASS(class)); } -void +static void __pci_bar_read(struct twimap* map) { struct pci_device* pcidev = twimap_data(map, struct pci_device*); @@ -181,7 +200,7 @@ __pci_bar_read(struct twimap* map) twimap_printf(map, "\n"); } -int +static int __pci_bar_gonext(struct twimap* map) { if (twimap_index(map, int) >= 5) { @@ -221,9 +240,10 @@ pci_build_fsmapping() map->go_next = __pci_bar_gonext; } } +EXPORT_TWIFS_PLUGIN(pci_devs, pci_build_fsmapping); size_t -pci_bar_sizing(struct pci_device* dev, uint32_t* bar_out, uint32_t bar_num) +pci_bar_sizing(struct pci_device* dev, u32_t* bar_out, u32_t bar_num) { pci_reg_t bar = pci_read_cspace(dev->cspace_base, PCI_REG_BAR(bar_num)); if (!bar) { @@ -242,40 +262,10 @@ pci_bar_sizing(struct pci_device* dev, uint32_t* bar_out, uint32_t bar_num) return ~sized + 1; } -void -pci_setup_msi(struct pci_device* device, int vector) -{ - // Dest: APIC#0, Physical Destination, No redirection - uint32_t msi_addr = (__APIC_BASE_PADDR); - - // Edge trigger, Fixed delivery - uint32_t msi_data = vector; - - pci_write_cspace( - device->cspace_base, PCI_MSI_ADDR(device->msi_loc), msi_addr); - - pci_reg_t reg1 = pci_read_cspace(device->cspace_base, device->msi_loc); - pci_reg_t msg_ctl = reg1 >> 16; - - int offset = !!(msg_ctl & MSI_CAP_64BIT) * 4; - pci_write_cspace(device->cspace_base, - PCI_MSI_DATA(device->msi_loc, offset), - msi_data & 0xffff); - - if ((msg_ctl & MSI_CAP_MASK)) { - pci_write_cspace( - device->cspace_base, PCI_MSI_MASK(device->msi_loc, offset), 0); - } - - // manipulate the MSI_CTRL to allow device using MSI to request service. - reg1 = (reg1 & 0xff8fffff) | 0x10000; - pci_write_cspace(device->cspace_base, device->msi_loc, reg1); -} - struct pci_device* -pci_get_device_by_id(uint16_t vendorId, uint16_t deviceId) +pci_get_device_by_id(u16_t vendorId, u16_t deviceId) { - uint32_t dev_info = vendorId | (deviceId << 16); + u32_t dev_info = vendorId | (deviceId << 16); struct pci_device *pos, *n; llist_for_each(pos, n, &pci_devices, dev_chain) { @@ -288,7 +278,7 @@ pci_get_device_by_id(uint16_t vendorId, uint16_t deviceId) } struct pci_device* -pci_get_device_by_class(uint32_t class) +pci_get_device_by_class(u32_t class) { struct pci_device *pos, *n; llist_for_each(pos, n, &pci_devices, dev_chain) @@ -302,17 +292,56 @@ pci_get_device_by_class(uint32_t class) } void -pci_init() +pci_add_driver(const char* name, + u32_t class, + u32_t vendor, + u32_t devid, + pci_drv_init init) { - llist_init_head(&pci_devices); - acpi_context* acpi = acpi_get_context(); - assert_msg(acpi, "ACPI not initialized."); - if (acpi->mcfg.alloc_num) { - // PCIe Enhanced Configuration Mechanism is supported. - // TODO: support PCIe addressing mechanism + struct pci_driver* pci_drv = valloc(sizeof(*pci_drv)); + *pci_drv = (struct pci_driver){ .create_driver = init, + .dev_info = (vendor << 16) | devid, + .dev_class = class }; + if (name) { + strncpy(pci_drv->name, name, PCI_DRV_NAME_LEN); } - // Otherwise, fallback to use legacy PCI 3.0 method. - pci_probe(); - pci_build_fsmapping(); + llist_append(&pci_drivers, &pci_drv->drivers); +} + +int +pci_bind_driver(struct pci_device* pci_dev) +{ + struct pci_driver *pos, *n; + llist_for_each(pos, n, &pci_drivers, drivers) + { + if (pos->dev_info) { + if (pos->dev_info == pci_dev->device_info) { + goto check_type; + } + continue; + } + check_type: + if (pos->dev_class) { + if (pos->dev_class == PCI_DEV_CLASS(pci_dev->class_info)) { + pci_dev->driver.type = pos; + pci_dev->driver.instance = pos->create_driver(pci_dev); + return 1; + } + } + } + return 0; +} + +void +pci_load_devices() +{ + int i = 0; + struct pci_driver* dev; + ldga_foreach(pci_dev_drivers, struct pci_driver*, i, dev) + { + llist_append(&pci_drivers, &dev->drivers); + } + + pci_probe(); } \ No newline at end of file