u-boot.git/drivers/pci, branch v2016.07-rc2

pcie/layerscape: fix bug in bus number computation when setting msi-map

2016-06-03T21:12:10Z

When multiple PCI cards are present in an ls2080a board, the second card does not get its msi-map set up properly due to a bug in computing the bus number. The bus number returned by PCI_BDF() is not the actual PCI bus number, but instead represents a global u-boot PCI bus number. A given bus number is relative to hose->first_busno, so that has to be subtracted from the PCI device id. Signed-off-by: Bogdan Purcareata Acked-by: Stuart Yoder Reviewed-by: York Sun

pci: Drop CONFIG_SYS_SCSI_SCAN_BUS_REVERSE

2016-05-17T15:54:43Z

This option is not used by any board. Drop it. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

pci: tegra: fix DM conversion issues on Tegra20

2016-05-04T20:31:04Z

Tegra20's PCIe controller has a couple of quirks. There are workarounds in the driver for these, but they don't work after the DM conversion: 1) The PCI_CLASS value is wrong in HW. This is worked around in pci_tegra_read_config() by patching up the value read from that register. Pre-DM, the PCIe core always read this via a 16-bit access to the 16-bit offset 0xa. With DM, 32-bit accesses are used, so we need to check for offset 0x8 instead. Mask the offset value back to 32-bit alignment to make this work in all cases. 2) Accessing devices other than dev 1 causes a data abort. Pre-DM, this was worked around in pci_skip_dev(), which the PCIe core code called during enumeration while iterating over a bus. The DM PCIe core doesn't use this function. Instead, enhance tegra_pcie_conf_address() to validate the bdf being accessed, and refuse to access invalid devices. Since pci_skip_dev() isn't used, delete it. I've also validated that both these WARs are only needed for Tegra20, by testing on Tegra30/Cardhu and Tegra124/Jetson TKx. So, compile them in conditionally. Fixes: e81ca88451cf ("dm: tegra: pci: Convert tegra boards to driver model for PCI") Signed-off-by: Stephen Warren Reviewed-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren

pci: Device scanning range fix

2016-04-25T19:10:43Z

The terminal condition in the area where a PCI device is scanned is wrong, and 1f.7 isn't scanned. Signed-off-by: Yoshinori Sato Reviewed-by: Bin Meng

pci/layerscape: set LUT and msi-map for discovered PCI devices

2016-03-21T19:42:13Z

msi-map properties are used to tell an OS how PCI requester IDs are mapped to ARM SMMU stream IDs. for all PCI devices discovered in a system: -allocate a LUT (look-up-table) entry in that PCI controller -allocate a stream ID for the device -program and enable a LUT entry (maps PCI requester id to stream ID) -set the msi-map property on the controller reflecting the LUT mapping basic bus scanning loop/logic was taken from drivers/pci/pci.c pci_hose_scan_bus(). Signed-off-by: Stuart Yoder Reviewed-by: York Sun

armv8: ls2080a: remove obsolete stream ID partitioning support

2016-03-21T19:42:12Z

Remove stream ID partitioning support that has been made obsolete by upstream device tree bindings that specify how representing how PCI requester IDs are mapped to MSI specifiers and SMMU stream IDs. Signed-off-by: Stuart Yoder Reviewed-by: York Sun

pci: Correct a few comments and nits

2016-03-17T02:27:23Z

Two comments are missing a parameter and there is an extra blank line. Also two of the region access macros are misnamed. Correct these problems. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

pci: Add functions to update PCI configuration registers

2016-03-17T02:27:23Z

It is common to read a config register value, clear and set some bits, then write back the updated value. Add functions to do this in one step, for convenience. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

dm: pci: Break out the common region display code

2016-03-14T21:34:50Z

Each region is displayed in almost the same way. Break out this common code into its own function. Signed-off-by: Simon Glass Tested-by: Stephen Warren

dm: Use uclass_first_device_err() where it is useful

2016-03-14T21:34:50Z

Use this new function in places where it simplifies the code. Signed-off-by: Simon Glass