2  * This is splited from hw/i386/kvm/pci-assign.c
6 #include "qemu/error-report.h"
12  * Scan the assigned devices for the devices that have an option ROM, and then
13  * load the corresponding ROM data to RAM. If an error occurs while loading an
14  * option ROM, we just ignore that option ROM and continue with the next one.
28     /* If loading ROM from file, pci handles it */  in pci_assign_dev_load_option_rom()
29     if (dev->romfile || !dev->rom_bar) {  in pci_assign_dev_load_option_rom()
34              "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom",  in pci_assign_dev_load_option_rom()
37     /* Write "1" to the ROM file to enable it */  in pci_assign_dev_load_option_rom()
41             error_report("pci-assign: Cannot open %s: %s", rom_file, strerror(errno));  in pci_assign_dev_load_option_rom()
45     if (fstat(fileno(fp), &st) == -1) {  in pci_assign_dev_load_option_rom()
46         error_report("pci-assign: Cannot stat %s: %s", rom_file, strerror(errno));  in pci_assign_dev_load_option_rom()
56     if (dev->romsize != UINT_MAX) {  in pci_assign_dev_load_option_rom()
57         if (st.st_size > dev->romsize) {  in pci_assign_dev_load_option_rom()
58             error_report("ROM BAR \"%s\" (%ld bytes) is too large for ROM size %u",  in pci_assign_dev_load_option_rom()
59                          rom_file, (long) st.st_size, dev->romsize);  in pci_assign_dev_load_option_rom()
63         dev->romsize = st.st_size;  in pci_assign_dev_load_option_rom()
66     snprintf(name, sizeof(name), "%s.rom", object_get_typename(owner));  in pci_assign_dev_load_option_rom()
67     memory_region_init_ram(&dev->rom, owner, name, dev->romsize, &error_abort);  in pci_assign_dev_load_option_rom()
68     ptr = memory_region_get_ram_ptr(&dev->rom);  in pci_assign_dev_load_option_rom()
69     memset(ptr, 0xff, dev->romsize);  in pci_assign_dev_load_option_rom()
72         error_report("pci-assign: Cannot read from host %s", rom_file);  in pci_assign_dev_load_option_rom()
73         error_printf("Device option ROM contents are probably invalid "  in pci_assign_dev_load_option_rom()
74                      "(check dmesg).\nSkip option ROM probe with rombar=0, "  in pci_assign_dev_load_option_rom()
79     pci_register_bar(dev, PCI_ROM_SLOT, 0, &dev->rom);  in pci_assign_dev_load_option_rom()
80     dev->has_rom = true;  in pci_assign_dev_load_option_rom()
83     /* Write "0" to disable ROM */  in pci_assign_dev_load_option_rom()
87         XEN_PT_WARN(dev, "%s\n", "Failed to disable pci-sysfs rom file");  in pci_assign_dev_load_option_rom()