qemu/include/hw/cxl/cxl_host.h

/*
 * QEMU CXL Host Setup
 *
 * Copyright (c) 2022 Huawei
 *
 * This work is licensed under the terms of the GNU GPL, version 2. See the
 * COPYING file in the top-level directory.
 */

#include "hw/cxl/cxl.h"
#include "hw/boards.h"

#ifndef CXL_HOST_H
#define CXL_HOST_H

void cxl_machine_init(Object *obj, CXLState *state);
void cxl_fmws_link_targets(CXLState *stat, Error **errp);
void cxl_hook_up_pxb_registers(PCIBus *bus, CXLState *state, Error **errp);

extern const MemoryRegionOps cfmws_ops;

#endif
hw/cxl: Make the CXL fixed memory window setup a machine parameter. Paolo Bonzini requested this change to simplify the ongoing effort to allow machine setup entirely via RPC. Includes shortening the command line form cxl-fixed-memory-window to cxl-fmw as the command lines are extremely long even with this change. The json change is needed to ensure that there is a CXLFixedMemoryWindowOptionsList even though the actual element in the json is never used. Similar to existing SgxEpcProperties. Update qemu-options.hx to reflect that this is now a -machine parameter. The bulk of -M / -machine parameters are documented under machine, so use that in preference to M. Update cxl-test and bios-tables-test to reflect new parameters. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Message-Id: <20220608145440.26106-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> 2022-06-08 16:54:33 +02:00			`/*`
			`* QEMU CXL Host Setup`
			`*`
			`* Copyright (c) 2022 Huawei`
			`*`
			`* This work is licensed under the terms of the GNU GPL, version 2. See the`
			`* COPYING file in the top-level directory.`
			`*/`

			`#include "hw/cxl/cxl.h"`
			`#include "hw/boards.h"`

			`#ifndef CXL_HOST_H`
			`#define CXL_HOST_H`

			`void cxl_machine_init(Object obj, CXLState state);`
hw/cxl: Push linking of CXL targets into i386/pc rather than in machine.c Whilst here take the oportunity to shorten the function name. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Message-Id: <20220608145440.26106-4-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> 2022-06-08 16:54:35 +02:00			`void cxl_fmws_link_targets(CXLState stat, Error *errp);`
pci/pci_expander_bridge: For CXL HB delay the HB register memory region setup. As the CXLState will no long be accessible via MachineState at time of PXB_CXL realization, come back later from the machine specific code to fill in the missing memory region setup. Only at this stage is it possible to check if cxl=on, so that check is moved to this later point. Note that for multiple host bridges, the allocation order of the register spaces is changed. This will be reflected in ACPI CEDT. Stubs are added to handle case of CONFIG_PXB=n for machines that call these functions. The bus walking logic is common to all machines so add a utility function + stub to cxl-host*. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Message-Id: <20220608145440.26106-6-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> 2022-06-08 16:54:37 +02:00			`void cxl_hook_up_pxb_registers(PCIBus bus, CXLState state, Error **errp);`
hw/cxl: Make the CXL fixed memory window setup a machine parameter. Paolo Bonzini requested this change to simplify the ongoing effort to allow machine setup entirely via RPC. Includes shortening the command line form cxl-fixed-memory-window to cxl-fmw as the command lines are extremely long even with this change. The json change is needed to ensure that there is a CXLFixedMemoryWindowOptionsList even though the actual element in the json is never used. Similar to existing SgxEpcProperties. Update qemu-options.hx to reflect that this is now a -machine parameter. The bulk of -M / -machine parameters are documented under machine, so use that in preference to M. Update cxl-test and bios-tables-test to reflect new parameters. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Message-Id: <20220608145440.26106-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> 2022-06-08 16:54:33 +02:00
			`extern const MemoryRegionOps cfmws_ops;`

			`#endif`