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a307d59434
Currently, the interfaces in the pseries machine code for assignment and setup of interrupts pass around qemu_irq objects. That was done in an attempt not to be too closely linked to the specific XICS interrupt controller. However interactions with the device tree setup made that attempt rather futile, and XICS is part of the PAPR spec anyway, so this really just meant we had to carry both the qemu_irq pointers and the XICS irq numbers around. This mess will just get worse when we add upcoming PCI MSI support, since that will require tracking a bunch more interrupt. Therefore, this patch reworks the spapr code to just use XICS irq numbers (roughly equivalent to GSIs on x86) and only retrieve the qemu_irq pointers from the XICS code when we need them (a trivial lookup). This is a reworked and generalized version of an earlier spapr_pci specific patch from Alexey Kardashevskiy. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> [agraf: fix checkpath warning] Signed-off-by: Alexander Graf <agraf@suse.de>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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* QEMU SPAPR PCI BUS definitions
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*
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* Copyright (c) 2011 Alexey Kardashevskiy <aik@au1.ibm.com>
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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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#if !defined(__HW_SPAPR_H__)
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#error Please include spapr.h before this file!
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#endif
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#if !defined(__HW_SPAPR_PCI_H__)
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#define __HW_SPAPR_PCI_H__
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#include "hw/pci.h"
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#include "hw/pci_host.h"
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#include "hw/xics.h"
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typedef struct sPAPRPHBState {
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PCIHostState host_state;
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uint64_t buid;
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char *busname;
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char *dtbusname;
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MemoryRegion memspace, iospace;
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target_phys_addr_t mem_win_addr, mem_win_size, io_win_addr, io_win_size;
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MemoryRegion memwindow, iowindow;
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DMAContext *dma;
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struct {
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uint32_t irq;
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} lsi_table[PCI_NUM_PINS];
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QLIST_ENTRY(sPAPRPHBState) list;
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} sPAPRPHBState;
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static inline qemu_irq spapr_phb_lsi_qirq(struct sPAPRPHBState *phb, int pin)
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{
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return xics_get_qirq(spapr->icp, phb->lsi_table[pin].irq);
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}
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#define SPAPR_PCI_MEM_WIN_BUS_OFFSET 0x80000000ULL
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#define SPAPR_PCI_IO_WIN_SIZE 0x10000
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void spapr_create_phb(sPAPREnvironment *spapr,
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const char *busname, uint64_t buid,
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uint64_t mem_win_addr, uint64_t mem_win_size,
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uint64_t io_win_addr);
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int spapr_populate_pci_dt(sPAPRPHBState *phb,
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uint32_t xics_phandle,
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void *fdt);
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#endif /* __HW_SPAPR_PCI_H__ */
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