LOG_MODULE("PCI")
static DEFINE_LLIST(pci_devices);
-static DEFINE_LLIST(pci_drivers);
+
+static struct device* pcidev_cat;
void
pci_probe_msi_info(struct pci_device* device);
+static struct pci_device*
+pci_create_device(ptr_t pci_base, int devinfo)
+{
+ pci_reg_t class = pci_read_cspace(pci_base, 0x8);
+ struct hbucket* bucket = device_definitions_byif(DEVIF_PCI);
+
+ u32_t devid = PCI_DEV_DEVID(devinfo);
+ u32_t vendor = PCI_DEV_VENDOR(devinfo);
+
+ kappendf(".%x:%x, ", vendor, devid);
+
+ struct pci_device_def *pos, *n;
+ hashtable_bucket_foreach(bucket, pos, n, devdef.hlist_if)
+ {
+ if (pos->dev_class != PCI_DEV_CLASS(class)) {
+ continue;
+ }
+
+ u32_t idm = pos->ident_mask;
+ int result = (pos->dev_ident & idm) == (devinfo & idm);
+
+ if (result) {
+ goto found;
+ }
+ }
+
+ kappendf(KWARN "unknown device\n");
+
+ return NULL;
+
+found:
+ pci_reg_t intr = pci_read_cspace(pci_base, 0x3c);
+
+ struct pci_device* device = vzalloc(sizeof(struct pci_device));
+ device->class_info = class;
+ device->device_info = devinfo;
+ device->cspace_base = pci_base;
+ device->intr_info = intr;
+
+ device_create(&device->dev, pcidev_cat, DEV_IFSYS, NULL);
+
+ pci_probe_msi_info(device);
+ pci_probe_bar_info(device);
+
+ kappendf("%s (dev.%x:%x:%x) \n",
+ pos->devdef.name,
+ pos->devdef.class.fn_grp,
+ pos->devdef.class.device,
+ pos->devdef.class.variant);
+
+ if (!pos->devdef.init_for) {
+ kappendf(KERROR "bad def\n");
+ goto fail;
+ }
+
+ int errno = pos->devdef.init_for(&pos->devdef, &device->dev);
+ if (errno) {
+ kappendf(KERROR "failed (e=%d)\n", errno);
+ goto fail;
+ }
+
+ llist_append(&pci_devices, &device->dev_chain);
+ device_register(&device->dev, &pos->devdef.class, "%x:%x", vendor, devid);
+
+ return device;
+
+fail:
+ vfree(device);
+ return NULL;
+}
+
void
pci_probe_device(int bus, int dev, int funct)
{
return;
}
- pci_reg_t intr = pci_read_cspace(base, 0x3c);
- pci_reg_t class = pci_read_cspace(base, 0x8);
-
- struct pci_device* device = vzalloc(sizeof(struct pci_device));
- *device = (struct pci_device){ .cspace_base = base,
- .class_info = class,
- .device_info = reg1,
- .intr_info = intr };
-
- pci_probe_msi_info(device);
- pci_probe_bar_info(device);
-
- llist_append(&pci_devices, &device->dev_chain);
+ kprintf("pci.%d:%d:%d", bus, dev, funct);
- 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);
- }
+ pci_create_device(base, reg1);
}
void
-pci_probe()
+pci_scan()
{
- // 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 < 256; bus++) {
for (int dev = 0; dev < 32; dev++) {
pci_probe_device(bus, dev, 0);
}
}
+size_t
+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) {
+ *bar_out = 0;
+ return 0;
+ }
+
+ pci_write_cspace(dev->cspace_base, PCI_REG_BAR(bar_num), 0xffffffff);
+ pci_reg_t sized =
+ pci_read_cspace(dev->cspace_base, PCI_REG_BAR(bar_num)) & ~0x1;
+ if (PCI_BAR_MMIO(bar)) {
+ sized = PCI_BAR_ADDR_MM(sized);
+ }
+ *bar_out = bar;
+ pci_write_cspace(dev->cspace_base, PCI_REG_BAR(bar_num), bar);
+ return ~sized + 1;
+}
+
+struct pci_device*
+pci_get_device_by_id(u16_t vendorId, u16_t deviceId)
+{
+ u32_t dev_info = vendorId | (deviceId << 16);
+ struct pci_device *pos, *n;
+ llist_for_each(pos, n, &pci_devices, dev_chain)
+ {
+ if (pos->device_info == dev_info) {
+ return pos;
+ }
+ }
+
+ return NULL;
+}
+
+struct pci_device*
+pci_get_device_by_class(u32_t class)
+{
+ struct pci_device *pos, *n;
+ llist_for_each(pos, n, &pci_devices, dev_chain)
+ {
+ if (PCI_DEV_CLASS(pos->class_info) == class) {
+ return pos;
+ }
+ }
+
+ return NULL;
+}
+
static void
__pci_read_cspace(struct twimap* map)
{
map->size_acc = 256;
}
+/*---------- TwiFS interface definition ----------*/
+
static void
__pci_read_revid(struct twimap* map)
{
}
EXPORT_TWIFS_PLUGIN(pci_devs, pci_build_fsmapping);
-size_t
-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) {
- *bar_out = 0;
- return 0;
- }
-
- pci_write_cspace(dev->cspace_base, PCI_REG_BAR(bar_num), 0xffffffff);
- pci_reg_t sized =
- pci_read_cspace(dev->cspace_base, PCI_REG_BAR(bar_num)) & ~0x1;
- if (PCI_BAR_MMIO(bar)) {
- sized = PCI_BAR_ADDR_MM(sized);
- }
- *bar_out = bar;
- pci_write_cspace(dev->cspace_base, PCI_REG_BAR(bar_num), bar);
- return ~sized + 1;
-}
-
-struct pci_device*
-pci_get_device_by_id(u16_t vendorId, u16_t deviceId)
-{
- u32_t dev_info = vendorId | (deviceId << 16);
- struct pci_device *pos, *n;
- llist_for_each(pos, n, &pci_devices, dev_chain)
- {
- if (pos->device_info == dev_info) {
- return pos;
- }
- }
-
- return NULL;
-}
+/*---------- PCI 3.0 HBA device definition ----------*/
-struct pci_device*
-pci_get_device_by_class(u32_t class)
-{
- struct pci_device *pos, *n;
- llist_for_each(pos, n, &pci_devices, dev_chain)
- {
- if (PCI_DEV_CLASS(pos->class_info) == class) {
- return pos;
- }
- }
-
- return NULL;
-}
-
-void
-pci_add_driver(const char* name,
- u32_t class,
- u32_t vendor,
- u32_t devid,
- pci_drv_init init)
+static int
+pci_load_devices(struct device_def* def)
{
- 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);
- }
+ pcidev_cat = device_addcat(NULL, "pci");
- llist_append(&pci_drivers, &pci_drv->drivers);
-}
+ pci_scan();
-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
+static struct device_def pci_def = {
+ .name = "pci3.0-hba",
+ .class = DEVCLASS(DEVIF_SOC, DEVFN_BUSIF, DEV_PCI),
+ .init = pci_load_devices
+};
+EXPORT_DEVICE(pci3hba, &pci_def, load_poststage);
git://scm.lunaixsky.com / lunaix-os.git / blobdiff