Read from data file and mask file, to build simulated data structure, and have pci_ops to use them.
Extract calling for pci_create_root_bus, scan_child_bus, resource survey and resource assign ... to see if those functions work as expected with simulated data. mask is with rw bits on pci registers, so we can make pci BAR sizing working. It also support bus number assign-all. Only tested on x86 64bit arch. # insmod pci_test.ko data_file=pci_test_data.txt mask_file=pci_test_mask.txt # lspci -tv # cat /proc/ioports_test # cat /proc/iomem_test # rmmod pci_test also in git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for_pci_v4.14_pci_next Thanks Yinghai Yinghai Lu (10): PCI: avoid arch_remove_reservations() for PCI_TEST PCI: introduce ioport_res/iomem_res for PCI_TEST PCI: export symbol for PCI_TEST module PCI: extend pci device match_driver state PCI: Add PCI_TEST module for resource allocation PCI: PCI_TEST simple data PCI: PCI_TEST data from x5-8 PCI: PCI_TEST data from x5-8 with zeroed bus number PCI: PCI_TEST data from x2-8 PCI: PCI_TEST data from x2-8 with zeroed bus number arch/x86/kernel/resource.c | 15 +- arch/x86/pci/i386.c | 1 + drivers/iommu/amd_iommu_init.c | 2 +- drivers/pci/Kconfig | 6 + drivers/pci/Makefile | 2 + drivers/pci/bus.c | 3 +- drivers/pci/pci-driver.c | 2 +- drivers/pci/pci_test.c | 1281 ++ drivers/pci/pci_test_data.txt | 24 + drivers/pci/pci_test_data_x2-8.txt | 22818 +++++++++++++++++++++++++++++++ drivers/pci/pci_test_data_x2-8_bus.txt | 22818 +++++++++++++++++++++++++++++++ drivers/pci/pci_test_data_x5-8.txt | 5656 ++++++++ drivers/pci/pci_test_data_x5-8_bus.txt | 5656 ++++++++ drivers/pci/pci_test_mask.txt | 5 + drivers/pci/pci_test_mask_x2-8.txt | 319 + drivers/pci/pci_test_mask_x5-8.txt | 176 + drivers/pci/probe.c | 4 +- drivers/pci/quirks.c | 2 +- drivers/pci/setup-bus.c | 3 +- drivers/pci/setup-res.c | 4 +- include/linux/ioport.h | 3 +- include/linux/pci.h | 15 +- kernel/resource.c | 7 +- 23 files changed, 58808 insertions(+), 14 deletions(-) create mode 100644 drivers/pci/pci_test.c create mode 100644 drivers/pci/pci_test_data.txt create mode 100644 drivers/pci/pci_test_data_x2-8.txt create mode 100644 drivers/pci/pci_test_data_x2-8_bus.txt create mode 100644 drivers/pci/pci_test_data_x5-8.txt create mode 100644 drivers/pci/pci_test_data_x5-8_bus.txt create mode 100644 drivers/pci/pci_test_mask.txt create mode 100644 drivers/pci/pci_test_mask_x2-8.txt create mode 100644 drivers/pci/pci_test_mask_x5-8.txt -- 2.9.4
