diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-emul-uclass.c | 14 | ||||
| -rw-r--r-- | drivers/pci/pci_sandbox.c | 78 |
2 files changed, 82 insertions, 10 deletions
diff --git a/drivers/pci/pci-emul-uclass.c b/drivers/pci/pci-emul-uclass.c index 8570a5da20..e9d2f49793 100644 --- a/drivers/pci/pci-emul-uclass.c +++ b/drivers/pci/pci-emul-uclass.c @@ -16,21 +16,27 @@ struct sandbox_pci_priv { }; int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn, - struct udevice **emulp) + struct udevice **containerp, struct udevice **emulp) { struct udevice *dev; int ret; + *containerp = NULL; ret = pci_bus_find_devfn(bus, PCI_MASK_BUS(find_devfn), &dev); if (ret) { debug("%s: Could not find emulator for dev %x\n", __func__, find_devfn); return ret; } + *containerp = dev; - ret = device_find_first_child(dev, emulp); - if (ret) - return ret; + if (device_get_uclass_id(dev) == UCLASS_PCI_GENERIC) { + ret = device_find_first_child(dev, emulp); + if (ret) + return ret; + } else { + *emulp = dev; + } return *emulp ? 0 : -ENODEV; } diff --git a/drivers/pci/pci_sandbox.c b/drivers/pci/pci_sandbox.c index 67cd733e61..119a98d061 100644 --- a/drivers/pci/pci_sandbox.c +++ b/drivers/pci/pci_sandbox.c @@ -10,15 +10,27 @@ #include <inttypes.h> #include <pci.h> +#define FDT_DEV_INFO_CELLS 4 +#define FDT_DEV_INFO_SIZE (FDT_DEV_INFO_CELLS * sizeof(u32)) + +#define SANDBOX_PCI_DEVFN(d, f) ((d << 3) | f) + +struct sandbox_pci_priv { + struct { + u16 vendor; + u16 device; + } vendev[256]; +}; + static int sandbox_pci_write_config(struct udevice *bus, pci_dev_t devfn, uint offset, ulong value, enum pci_size_t size) { struct dm_pci_emul_ops *ops; - struct udevice *emul; + struct udevice *container, *emul; int ret; - ret = sandbox_pci_get_emul(bus, devfn, &emul); + ret = sandbox_pci_get_emul(bus, devfn, &container, &emul); if (ret) return ret == -ENODEV ? 0 : ret; ops = pci_get_emul_ops(emul); @@ -33,14 +45,31 @@ static int sandbox_pci_read_config(struct udevice *bus, pci_dev_t devfn, enum pci_size_t size) { struct dm_pci_emul_ops *ops; - struct udevice *emul; + struct udevice *container, *emul; + struct sandbox_pci_priv *priv = dev_get_priv(bus); int ret; /* Prepare the default response */ *valuep = pci_get_ff(size); - ret = sandbox_pci_get_emul(bus, devfn, &emul); - if (ret) - return ret == -ENODEV ? 0 : ret; + ret = sandbox_pci_get_emul(bus, devfn, &container, &emul); + if (ret) { + if (!container) { + u16 vendor, device; + + devfn = SANDBOX_PCI_DEVFN(PCI_DEV(devfn), + PCI_FUNC(devfn)); + vendor = priv->vendev[devfn].vendor; + device = priv->vendev[devfn].device; + if (offset == PCI_VENDOR_ID && vendor) + *valuep = vendor; + else if (offset == PCI_DEVICE_ID && device) + *valuep = device; + + return 0; + } else { + return ret == -ENODEV ? 0 : ret; + } + } ops = pci_get_emul_ops(emul); if (!ops || !ops->read_config) return -ENOSYS; @@ -48,6 +77,41 @@ static int sandbox_pci_read_config(struct udevice *bus, pci_dev_t devfn, return ops->read_config(emul, offset, valuep, size); } +static int sandbox_pci_probe(struct udevice *dev) +{ + struct sandbox_pci_priv *priv = dev_get_priv(dev); + const fdt32_t *cell; + u8 pdev, pfn, devfn; + int len; + + cell = ofnode_get_property(dev_ofnode(dev), "sandbox,dev-info", &len); + if (!cell) + return 0; + + if ((len % FDT_DEV_INFO_SIZE) == 0) { + int num = len / FDT_DEV_INFO_SIZE; + int i; + + for (i = 0; i < num; i++) { + debug("dev info #%d: %02x %02x %04x %04x\n", i, + fdt32_to_cpu(cell[0]), fdt32_to_cpu(cell[1]), + fdt32_to_cpu(cell[2]), fdt32_to_cpu(cell[3])); + + pdev = fdt32_to_cpu(cell[0]); + pfn = fdt32_to_cpu(cell[1]); + if (pdev > 31 || pfn > 7) + continue; + devfn = SANDBOX_PCI_DEVFN(pdev, pfn); + priv->vendev[devfn].vendor = fdt32_to_cpu(cell[2]); + priv->vendev[devfn].device = fdt32_to_cpu(cell[3]); + + cell += FDT_DEV_INFO_CELLS; + } + } + + return 0; +} + static const struct dm_pci_ops sandbox_pci_ops = { .read_config = sandbox_pci_read_config, .write_config = sandbox_pci_write_config, @@ -63,6 +127,8 @@ U_BOOT_DRIVER(pci_sandbox) = { .id = UCLASS_PCI, .of_match = sandbox_pci_ids, .ops = &sandbox_pci_ops, + .probe = sandbox_pci_probe, + .priv_auto_alloc_size = sizeof(struct sandbox_pci_priv), /* Attach an emulator if we can */ .child_post_bind = dm_scan_fdt_dev, |