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| author | Thierry Reding <treding@nvidia.com> | 2014-11-12 18:26:49 -0700 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-11-23 06:49:01 -0500 |
| commit | 4efe52bf23c96cee7052273bd8549caee4d0fdc2 (patch) | |
| tree | 0729647bcc94f7df595ca3071a36fd8ccc42baa2 | |
| parent | 042b83d4c502d17db40f1fa4f6d9b6cb86c653d2 (diff) | |
| download | u-boot-imx-4efe52bf23c96cee7052273bd8549caee4d0fdc2.zip u-boot-imx-4efe52bf23c96cee7052273bd8549caee4d0fdc2.tar.gz u-boot-imx-4efe52bf23c96cee7052273bd8549caee4d0fdc2.tar.bz2 | |
pci: Honour pci_skip_dev()
When enumerating devices, honour the pci_skip_dev() function. This can
be used by PCI controller drivers to restrict which devices will be
probed.
This is required by the NVIDIA Tegra PCIe controller driver, which will
fail with a data abort exception if an access is attempted to a device
number larger than 0 outside of bus 0. pci_skip_dev() is therefore
implemented to prevent any such accesses.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | common/cmd_pci.c | 3 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 3 | ||||
| -rw-r--r-- | include/pci.h | 1 |
3 files changed, 7 insertions, 0 deletions
diff --git a/common/cmd_pci.c b/common/cmd_pci.c index 5a6048c..e3a77e3 100644 --- a/common/cmd_pci.c +++ b/common/cmd_pci.c @@ -71,6 +71,9 @@ void pciinfo(int BusNum, int ShortPCIListing) dev = PCI_BDF(BusNum, Device, Function); + if (pci_skip_dev(hose, dev)) + continue; + pci_read_config_word(dev, PCI_VENDOR_ID, &VendorID); if ((VendorID == 0xFFFF) || (VendorID == 0x0000)) continue; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5d54790..7ee21d1 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -195,6 +195,9 @@ pci_dev_t pci_find_devices(struct pci_device_id *ids, int index) bdf < PCI_BDF(bus + 1, 0, 0); #endif bdf += PCI_BDF(0, 0, 1)) { + if (pci_skip_dev(hose, bdf)) + continue; + if (!PCI_FUNC(bdf)) { pci_read_config_byte(bdf, PCI_HEADER_TYPE, diff --git a/include/pci.h b/include/pci.h index 2ff7365..d211351 100644 --- a/include/pci.h +++ b/include/pci.h @@ -623,6 +623,7 @@ extern void pci_register_hose(struct pci_controller* hose); extern struct pci_controller* pci_bus_to_hose(int bus); extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr); +extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev); extern int pci_hose_scan(struct pci_controller *hose); extern int pci_hose_scan_bus(struct pci_controller *hose, int bus); |