ad0ebb91cd
The pseries platform already contains an IOMMU implementation, since it is essential for the platform's paravirtualized VIO devices. This IOMMU support is currently built into the implementation of the VIO "bus" and the various VIO devices. This patch converts this code to make use of the new common IOMMU infrastructure. We don't yet handle synchronization of map/unmap callbacks vs. invalidations, this will require some complex interaction with the kernel and is not a major concern at this stage. Cc: Alex Graf <agraf@suse.de> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
135 lines
4.6 KiB
C
135 lines
4.6 KiB
C
#ifndef _HW_SPAPR_VIO_H
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#define _HW_SPAPR_VIO_H
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/*
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* QEMU sPAPR VIO bus definitions
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*
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* Copyright (c) 2010 David Gibson, IBM Corporation <david@gibson.dropbear.id.au>
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* Based on the s390 virtio bus definitions:
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "dma.h"
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#define TYPE_VIO_SPAPR_DEVICE "vio-spapr-device"
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#define VIO_SPAPR_DEVICE(obj) \
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OBJECT_CHECK(VIOsPAPRDevice, (obj), TYPE_VIO_SPAPR_DEVICE)
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#define VIO_SPAPR_DEVICE_CLASS(klass) \
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OBJECT_CLASS_CHECK(VIOsPAPRDeviceClass, (klass), TYPE_VIO_SPAPR_DEVICE)
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#define VIO_SPAPR_DEVICE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VIOsPAPRDeviceClass, (obj), TYPE_VIO_SPAPR_DEVICE)
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#define TYPE_SPAPR_VIO_BUS "spapr-vio-bus"
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#define SPAPR_VIO_BUS(obj) OBJECT_CHECK(VIOsPAPRBus, (obj), TYPE_SPAPR_VIO_BUS)
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struct VIOsPAPRDevice;
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typedef struct VIOsPAPR_CRQ {
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uint64_t qladdr;
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uint32_t qsize;
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uint32_t qnext;
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int(*SendFunc)(struct VIOsPAPRDevice *vdev, uint8_t *crq);
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} VIOsPAPR_CRQ;
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typedef struct VIOsPAPRDevice VIOsPAPRDevice;
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typedef struct VIOsPAPRBus VIOsPAPRBus;
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typedef struct VIOsPAPRDeviceClass {
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DeviceClass parent_class;
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const char *dt_name, *dt_type, *dt_compatible;
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target_ulong signal_mask;
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uint32_t rtce_window_size;
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int (*init)(VIOsPAPRDevice *dev);
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void (*reset)(VIOsPAPRDevice *dev);
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int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
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} VIOsPAPRDeviceClass;
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struct VIOsPAPRDevice {
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DeviceState qdev;
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uint32_t reg;
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uint32_t flags;
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qemu_irq qirq;
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uint32_t vio_irq_num;
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target_ulong signal_state;
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VIOsPAPR_CRQ crq;
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DMAContext *dma;
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};
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#define DEFINE_SPAPR_PROPERTIES(type, field) \
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DEFINE_PROP_UINT32("reg", type, field.reg, -1)
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struct VIOsPAPRBus {
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BusState bus;
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uint32_t next_reg;
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int (*init)(VIOsPAPRDevice *dev);
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int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
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};
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extern VIOsPAPRBus *spapr_vio_bus_init(void);
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extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
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extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
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extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
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extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
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static inline bool spapr_vio_dma_valid(VIOsPAPRDevice *dev, uint64_t taddr,
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uint32_t size, DMADirection dir)
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{
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return dma_memory_valid(dev->dma, taddr, size, dir);
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}
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static inline int spapr_vio_dma_read(VIOsPAPRDevice *dev, uint64_t taddr,
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void *buf, uint32_t size)
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{
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return (dma_memory_read(dev->dma, taddr, buf, size) != 0) ?
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H_DEST_PARM : H_SUCCESS;
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}
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static inline int spapr_vio_dma_write(VIOsPAPRDevice *dev, uint64_t taddr,
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const void *buf, uint32_t size)
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{
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return (dma_memory_write(dev->dma, taddr, buf, size) != 0) ?
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H_DEST_PARM : H_SUCCESS;
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}
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static inline int spapr_vio_dma_set(VIOsPAPRDevice *dev, uint64_t taddr,
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uint8_t c, uint32_t size)
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{
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return (dma_memory_set(dev->dma, taddr, c, size) != 0) ?
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H_DEST_PARM : H_SUCCESS;
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}
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#define vio_stb(_dev, _addr, _val) (stb_dma((_dev)->dma, (_addr), (_val)))
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#define vio_sth(_dev, _addr, _val) (stw_be_dma((_dev)->dma, (_addr), (_val)))
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#define vio_stl(_dev, _addr, _val) (stl_be_dma((_dev)->dma, (_addr), (_val)))
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#define vio_stq(_dev, _addr, _val) (stq_be_dma((_dev)->dma, (_addr), (_val)))
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#define vio_ldq(_dev, _addr) (ldq_be_dma((_dev)->dma, (_addr)))
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int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
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VIOsPAPRDevice *vty_lookup(sPAPREnvironment *spapr, target_ulong reg);
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void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
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void spapr_vty_create(VIOsPAPRBus *bus, CharDriverState *chardev);
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void spapr_vlan_create(VIOsPAPRBus *bus, NICInfo *nd);
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void spapr_vscsi_create(VIOsPAPRBus *bus);
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VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
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int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
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void spapr_vio_quiesce(void);
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#endif /* _HW_SPAPR_VIO_H */
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