68f5d3f3b6
To support testing of PCI/PCIe drivers in UML, add a PCI bus support driver. This driver uses virtio, which in UML is really just vhost-user, to talk to devices, and adds the devices to the virtual PCI bus in the system. Since virtio already allows DMA/bus mastering this really isn't all that hard, of course we need the logic_iomem infrastructure that was added by a previous patch. The protocol to talk to the device is has a few fairly simple messages for reading to/writing from config and IO spaces, and messages for the device to send the various interrupts (INT#, MSI/MSI-X and while suspended PME#). Note that currently no offical virtio device ID is assigned for this protocol, as a consequence this patch requires defining it in the Kconfig, with a default that makes the driver refuse to work at all. Finally, in order to add support for MSI/MSI-X interrupts, some small changes are needed in the UML IRQ code, it needs to have more interrupts, changing NR_IRQS from 64 to 128 if this driver is enabled, but not actually use them for anything so that the generic IRQ domain/MSI infrastructure can allocate IRQ numbers. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
74 lines
2.5 KiB
Makefile
74 lines
2.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (C) 2000, 2002, 2003 Jeff Dike (jdike@karaya.com)
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#
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# pcap is broken in 2.5 because kbuild doesn't allow pcap.a to be linked
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# in to pcap.o
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slip-objs := slip_kern.o slip_user.o
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slirp-objs := slirp_kern.o slirp_user.o
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daemon-objs := daemon_kern.o daemon_user.o
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vector-objs := vector_kern.o vector_user.o vector_transports.o
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umcast-objs := umcast_kern.o umcast_user.o
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net-objs := net_kern.o net_user.o
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mconsole-objs := mconsole_kern.o mconsole_user.o
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hostaudio-objs := hostaudio_kern.o
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ubd-objs := ubd_kern.o ubd_user.o
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port-objs := port_kern.o port_user.o
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harddog-objs := harddog_kern.o harddog_user.o
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rtc-objs := rtc_kern.o rtc_user.o
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LDFLAGS_pcap.o = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libpcap.a)
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LDFLAGS_vde.o = $(shell $(CC) $(CFLAGS) -print-file-name=libvdeplug.a)
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targets := pcap_kern.o pcap_user.o vde_kern.o vde_user.o
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$(obj)/pcap.o: $(obj)/pcap_kern.o $(obj)/pcap_user.o
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$(LD) -r -dp -o $@ $^ $(ld_flags)
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$(obj)/vde.o: $(obj)/vde_kern.o $(obj)/vde_user.o
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$(LD) -r -dp -o $@ $^ $(ld_flags)
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#XXX: The call below does not work because the flags are added before the
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# object name, so nothing from the library gets linked.
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#$(call if_changed,ld)
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# When the above is fixed, don't forget to add this too!
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#targets += $(obj)/pcap.o
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obj-y := stdio_console.o fd.o chan_kern.o chan_user.o line.o
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obj-$(CONFIG_SSL) += ssl.o
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obj-$(CONFIG_STDERR_CONSOLE) += stderr_console.o
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obj-$(CONFIG_UML_NET_SLIP) += slip.o slip_common.o
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obj-$(CONFIG_UML_NET_SLIRP) += slirp.o slip_common.o
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obj-$(CONFIG_UML_NET_DAEMON) += daemon.o
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obj-$(CONFIG_UML_NET_VECTOR) += vector.o
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obj-$(CONFIG_UML_NET_VDE) += vde.o
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obj-$(CONFIG_UML_NET_MCAST) += umcast.o
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obj-$(CONFIG_UML_NET_PCAP) += pcap.o
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obj-$(CONFIG_UML_NET) += net.o
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obj-$(CONFIG_MCONSOLE) += mconsole.o
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obj-$(CONFIG_MMAPPER) += mmapper_kern.o
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obj-$(CONFIG_BLK_DEV_UBD) += ubd.o
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obj-$(CONFIG_HOSTAUDIO) += hostaudio.o
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obj-$(CONFIG_NULL_CHAN) += null.o
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obj-$(CONFIG_PORT_CHAN) += port.o
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obj-$(CONFIG_PTY_CHAN) += pty.o
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obj-$(CONFIG_TTY_CHAN) += tty.o
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obj-$(CONFIG_XTERM_CHAN) += xterm.o xterm_kern.o
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obj-$(CONFIG_UML_WATCHDOG) += harddog.o
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obj-$(CONFIG_BLK_DEV_COW_COMMON) += cow_user.o
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obj-$(CONFIG_UML_RANDOM) += random.o
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obj-$(CONFIG_VIRTIO_UML) += virtio_uml.o
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obj-$(CONFIG_UML_RTC) += rtc.o
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obj-$(CONFIG_UML_PCI_OVER_VIRTIO) += virt-pci.o
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# pcap_user.o must be added explicitly.
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USER_OBJS := fd.o null.o pty.o tty.o xterm.o slip_common.o pcap_user.o vde_user.o vector_user.o
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CFLAGS_null.o = -DDEV_NULL=$(DEV_NULL_PATH)
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include arch/um/scripts/Makefile.rules
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