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Jonathan Cameron 154070eaf6 hw/pxb-cxl: Support passthrough HDM Decoders unless overridden 
The CXL r3.0 specification allows for there to be no HDM decoders on CXL
Host Bridges if they have only a single root port. Instead, all accesses
directed to the host bridge (as specified in CXL Fixed Memory Windows)
are assumed to be routed to the single root port.

Linux currently assumes this implementation choice. So to simplify testing,
make QEMU emulation also default to no HDM decoders under these particular
circumstances, but provide a hdm_for_passthrough boolean option to have
HDM decoders as previously.

Technically this is breaking backwards compatibility, but given the only
known software stack used with the QEMU emulation is the Linux kernel
and this configuration did not work before this change, there are
unlikely to be any complaints that it now works. The option is retained
to allow testing of software that does allow for these HDM decoders to exist,
once someone writes it.

Reported-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Tested-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

--
v2: Pick up and fix typo in tag from Fan Ni
Message-Id: <20230227153128.8164-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 		2023-03-07 19:51:07 -05:00
..
9pfs Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
acpi pcihp: add ACPI PCI hotplug specific is_hotpluggable_bus() callback 2023-03-07 12:39:00 -05:00
adc hw/adc: Make adci[*] R/W in NPCM7XX ADC 2022-07-18 13:20:14 +01:00
alpha Drop duplicate #include 2023-02-08 07:28:05 +01:00
arm hw: arm: allwinner-h3: Fix and complete H3 i2c devices 2023-03-06 15:31:24 +00:00
audio hw/audio/ac97: Split off some definitions to a header 2023-02-27 22:29:02 +01:00
avr Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
block hw: Replace isa_get_irq() by isa_bus_get_irq() when ISABus is available 2023-02-27 22:29:02 +01:00
char hw/char/xilinx_uartlite: Expose XILINX_UARTLITE QOM type 2023-02-27 13:27:05 +00:00
core hw: arm: Support direct boot for Linux/arm64 EFI zboot images 2023-03-06 14:08:12 +00:00
cpu hw/cpu: Mark arm11 and realview mpcore as target-independent code 2023-01-16 17:51:20 +01:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
cxl hw/pxb-cxl: Support passthrough HDM Decoders unless overridden 2023-03-07 19:51:07 -05:00
display hw/display/sm501: Add fallbacks to pixman routines 2023-02-27 22:29:02 +01:00
dma hw/isa: Rename isa_get_dma() -> isa_bus_get_dma() 2023-02-27 22:29:02 +01:00
gpio hw/gpio/max7310: Simplify max7310_realize() 2023-02-27 13:27:04 +00:00
hppa hw/isa: Rename isa_bus_irqs() -> isa_bus_register_input_irqs() 2023-02-27 22:29:02 +01:00
hyperv Fix non-first inclusions of qemu/osdep.h 2023-02-08 07:28:05 +01:00
i2c hw: allwinner-i2c: Fix TWI_CNTR_INT_FLAG on SUN6i SoCs 2023-03-06 14:08:12 +00:00
i386 acpi: pci: move out ACPI PCI hotplug generator from generic slot generator build_append_pci_bus_devices() 2023-03-07 12:39:00 -05:00
ide hw/ide/via: Replace magic 2 value by ARRAY_SIZE / MAX_IDE_DEVS 2023-02-27 22:29:02 +01:00
input hw/input: Clean up includes 2023-02-08 07:16:23 +01:00
intc hw: intc: Use cpu_by_arch_id to fetch CPU state 2023-03-05 15:33:40 -08:00
ipack include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
ipmi include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
isa pcihp: add ACPI PCI hotplug specific is_hotpluggable_bus() callback 2023-03-07 12:39:00 -05:00
loongarch hw/loongarch/virt: add system_powerdown hmp command support 2023-03-03 09:37:30 +08:00
m68k hw: Add compat machines for 8.0 2022-12-21 06:35:28 -05:00
mem hw/mem/cxl_type3: Add CXL RAS Error Injection Support. 2023-03-07 12:39:00 -05:00
microblaze hw/char/xilinx_uartlite: Open-code xilinx_uartlite_create() 2023-02-27 13:27:05 +00:00
mips hw/isa: Rename isa_bus_irqs() -> isa_bus_register_input_irqs() 2023-02-27 22:29:02 +01:00
misc hw/misc: add a toy i2c echo device 2023-03-02 13:57:50 +01:00
net virtio-net: clear guest_announce feature if no cvq backend 2023-03-02 03:10:46 -05:00
nios2 hw/nios2: set machine->fdt in nios2_load_dtb() 2022-10-17 16:15:10 -03:00
nubus hw/nubus/nubus-device: Fix memory leak in nubus_device_realize 2023-02-27 22:29:01 +01:00
nvme hw/nvme: flexible data placement emulation 2023-03-06 15:28:02 +01:00
nvram aspeed queue: 2023-03-03 17:11:22 +00:00
openrisc openrisc: re-randomize rng-seed on reboot 2022-10-27 11:34:31 +01:00
pci hw/pci: Add pcie_count_ds_port() and pcie_find_port_first() helpers 2023-03-07 19:51:07 -05:00
pci-bridge hw/pxb-cxl: Support passthrough HDM Decoders unless overridden 2023-03-07 19:51:07 -05:00
pci-host pnv_phb4_pec: Simplify/align code to parent user-created PHBs 2023-03-03 16:50:17 -03:00
pcmcia hw/pcmcia: Do not register PCMCIA type if not required 2021-05-02 17:24:50 +02:00
ppc pnv_phb4_pec: Simplify/align code to parent user-created PHBs 2023-03-03 16:50:17 -03:00
rdma Drop duplicate #include 2023-02-08 07:28:05 +01:00
remote Drop duplicate #include 2023-02-08 07:28:05 +01:00
riscv hw/riscv/virt.c: Initialize the ACPI tables 2023-03-06 11:35:07 -08:00
rtc hw/rtc: Rename rtc_[get|set]_memory -> mc146818rtc_[get|set]_cmos_data 2023-02-27 22:29:02 +01:00
rx rx: re-randomize rng-seed on reboot 2022-10-27 11:34:31 +01:00
s390x s390x/pv: Add support for asynchronous teardown for reboot 2023-02-27 09:15:39 +01:00
scsi Updated the FSF address to <https://www.gnu.org/licenses/> 2023-02-27 09:15:39 +01:00
sd hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
sensor Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
sh4 hw/ide/mmio: Extract TYPE_MMIO_IDE declarations to 'hw/ide/mmio.h' 2023-02-27 22:29:02 +01:00
smbios hw/smbios: fix field corruption in type 4 table 2023-03-02 03:10:46 -05:00
sparc machine: make memory-backend a link property 2022-05-12 12:29:44 +02:00
sparc64 hw/ide: Un-inline ide_set_irq() 2023-02-27 22:29:02 +01:00
ssi aspeed/smc: Replace SysBus IRQs with GPIO lines 2023-03-02 13:57:50 +01:00
timer hw/timer/hpet: Fix expiration time overflow 2023-03-02 03:10:47 -05:00
tpm hw/tpm: Move tpm_ppi.c out of target-specific source set 2023-01-16 17:51:20 +01:00
tricore hw/tricore: fix inclusion of tricore_testboard 2021-07-20 20:10:21 +02:00
usb hw/usb/xhci-nec: Replace container_of() by NEC_XHCI() QOM cast macro 2023-02-27 22:29:02 +01:00
vfio hw/vfio/ccw: Replace DO_UPCAST(VFIOCCWDevice) by VFIO_CCW() 2023-02-27 09:15:38 +01:00
virtio vdpa: return VHOST_F_LOG_ALL in vhost-vdpa devices 2023-03-07 12:38:59 -05:00
watchdog hw/watchdog/wdt_aspeed: Log unimplemented registers as UNIMP level 2023-02-07 09:02:05 +01:00
xen hw/xen/xen_pt: fix uninitialized variable 2023-03-06 11:27:37 +00:00
xenpv hw/xen: Subsume xen_be_register_common() into xen_be_init() 2023-03-01 09:09:22 +00:00
xtensa hw/xtensa: fix reset value of MIROUT register of MX PIC 2022-05-06 15:27:40 -07:00
Kconfig xen: add CONFIG_XEN_BUS and CONFIG_XEN_EMU options for Xen emulation 2023-03-01 08:22:49 +00:00
meson.build hw/loongarch: Add support loongson3 virt machine type. 2022-06-06 18:09:03 +00:00