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u-boot/drivers/pci
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Pali Rohár 2348e72d6d dm: pci: Fix handling of errors when scanning device 
Some PCIe controller's read_config() method support indicating error
directly via return value, but some cannot distinguish all-ones (or
all-zeros) read response from an error.

The current code in pci_bind_bus_devices() interprets all-ones /
all-zeros in PCI_VENDOR_ID register as "nothing connected", and
continues the cycle, but an error returned via return value breaks the
cycle.

This is wrong for the PCIe controllers which return this error via
return value.

Handle all errors when reading PCI_VENDOR_ID the same way.

This fixes enumeration of PCI devices for example when there is a PCI
bridge connected behind another PCI bridge and not all ports are
connected to a device, and the controller (for example Aardvark)
translates the UR error (Unsupported Request) as -EOPNOTSUPP.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-09-25 09:46:15 -06:00
..
fsl_pci_init.c pci: fsl_pci_init: Dynamically allocate the PCI regions 2021-03-05 10:25:42 +05:30
Kconfig pci: Fix mismerge with v2021.10-rc4 2021-09-16 11:46:44 -04:00
Makefile pci: Drop PCI_INDIRECT_BRIDGE 2021-09-13 18:23:13 -04:00
pci-aardvark.c arm: a37xx: pci: Don't spam about PIO Response Status 2021-09-10 09:01:51 +02:00
pci-emul-uclass.c dm: Use access methods for dev/uclass private data 2021-01-05 12:24:40 -07:00
pci-rcar-gen2.c dm: treewide: Rename ofdata_to_platdata() to of_to_plat() 2020-12-13 16:51:09 -07:00
pci-rcar-gen3.c pci: renesas: Fix BAR mapping on Gen3 2021-02-20 22:38:28 +01:00
pci-uclass.c dm: pci: Fix handling of errors when scanning device 2021-09-25 09:46:15 -06:00
pci_auto.c pci: Fix configuring io/memory base and limit registers of PCI bridges 2021-09-23 14:15:32 -04:00
pci_auto_common.c common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
pci_common.c pci: Drop DM_PCI check from pci_common 2021-08-05 16:14:36 -04:00
pci_compat.c common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
pci_gt64120.c pci: gt64120: Drop use of DM_PCI 2021-08-05 19:46:35 -04:00
pci_internal.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
pci_mpc85xx.c pci: mpc85xx: Support 64-bit bus and cpu address 2021-03-05 10:25:43 +05:30
pci_msc01.c pci: msc01: Drop use of DM_PCI 2021-08-05 19:46:35 -04:00
pci_mvebu.c pci: pci_mvebu: set local dev to number 1 2021-02-26 10:22:29 +01:00
pci_octeontx.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pci_rom.c video: Fix video on coreboot with the copy buffer 2021-03-27 15:04:30 +13:00
pci_sandbox.c dm: treewide: Rename ..._platdata variables to just ..._plat 2020-12-13 16:51:09 -07:00
pci_sh4.c common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00
pci_sh7751.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
pci_sh7780.c common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00
pci_tegra.c dm: treewide: Rename ofdata_to_platdata() to of_to_plat() 2020-12-13 16:51:09 -07:00
pci_x86.c dm: pci: Update the PCI read_config() method to const dev * 2020-02-05 19:33:45 -07:00
pcie_brcmstb.c pci: pcie-brcmstb: Fix inbound window configurations 2021-02-18 11:56:25 +01:00
pcie_dw_common.c drivers: pci: pcie_dw_common: fix Werror compilation error 2021-05-31 16:35:55 +08:00
pcie_dw_common.h pci: add common Designware PCIe functions 2021-04-15 10:43:17 +08:00
pcie_dw_meson.c pci: add Amlogic Meson Designware PCIe controller 2021-04-15 10:43:17 +08:00
pcie_dw_mvebu.c pcie: designware: mvebu: do not configure ATU for IO when not used 2021-05-16 06:48:45 +02:00
pcie_dw_rockchip.c pci: pcie_dw_rockchip: Replace msleep occurences by udelay 2021-06-18 14:36:54 +08:00
pcie_dw_sifive.c drivers: pci: add pcie support for fu740 2021-05-31 16:35:54 +08:00
pcie_dw_ti.c pci: pcie_dw_ti: migrate to common Designware PCIe functions 2021-04-15 10:43:17 +08:00
pcie_ecam_generic.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_ecam_synquacer.c pci: synquacer: Add SynQuacer ECAM based PCIe driver 2021-07-06 14:07:36 -04:00
pcie_fsl.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_fsl.h dm: pci: fsl: Correct the workaround of erratum A-007815 2020-10-23 16:52:09 +05:30
pcie_fsl_fixup.c treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
pcie_imx.c pci: imx: Drop use of DM_PCI 2021-08-05 19:46:35 -04:00
pcie_intel_fpga.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_iproc.c pci: iproc: fix compilation errors and warnings 2021-09-02 11:19:58 -04:00
pcie_layerscape.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_layerscape.h pci: layerscape: Remove the shadow SVR definitions 2021-02-08 14:01:18 +05:30
pcie_layerscape_ep.c pci: layerscape-ep: Add check of the PCIe controller enablement 2021-06-17 11:46:11 +05:30
pcie_layerscape_fixup.c dm: Avoid accessing seq directly 2020-12-18 20:32:21 -07:00
pcie_layerscape_fixup_common.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_layerscape_fixup_common.h treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
pcie_layerscape_gen4.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_layerscape_gen4.h pci: Drop dm.h inclusion from header file 2020-08-03 22:19:54 -04:00
pcie_layerscape_gen4_fixup.c dm: Avoid accessing seq directly 2020-12-18 20:32:21 -07:00
pcie_layerscape_rc.c pci: layerscape: Change to allocate zeroed memery for struct ls_pcie 2021-03-23 18:06:07 +05:30
pcie_mediatek.c dm: Avoid accessing seq directly 2020-12-18 20:32:21 -07:00
pcie_octeon.c mips: octeon: Add Octeon PCIe host controller driver 2021-04-28 10:05:12 +02:00
pcie_phytium.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_rockchip.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
pcie_uniphier.c pci: uniphier: Add UniPhier PCIe controller driver 2021-07-14 16:48:08 -04:00
pcie_xilinx.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00