mirror of https://github.com/xemu-project/xemu.git
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* QEMU Geforce NV2A implementation
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*
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* Copyright (c) 2012 espes
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* Copyright (c) 2015 Jannik Vogel
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* Copyright (c) 2018-2021 Matt Borgerson
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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 "nv2a_int.h"
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/* PBUS - bus control */
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uint64_t pbus_read(void *opaque, hwaddr addr, unsigned int size)
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{
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NV2AState *s = opaque;
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PCIDevice *d = PCI_DEVICE(s);
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uint64_t r = 0;
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switch (addr) {
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case NV_PBUS_PCI_NV_0:
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r = pci_get_long(d->config + PCI_VENDOR_ID);
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break;
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case NV_PBUS_PCI_NV_1:
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r = pci_get_long(d->config + PCI_COMMAND);
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break;
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case NV_PBUS_PCI_NV_2:
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r = pci_get_long(d->config + PCI_CLASS_REVISION);
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break;
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default:
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break;
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}
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nv2a_reg_log_read(NV_PBUS, addr, size, r);
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return r;
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}
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void pbus_write(void *opaque, hwaddr addr, uint64_t val, unsigned int size)
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{
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NV2AState *s = opaque;
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PCIDevice *d = PCI_DEVICE(s);
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nv2a_reg_log_write(NV_PBUS, addr, size, val);
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switch (addr) {
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case NV_PBUS_PCI_NV_1:
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pci_set_long(d->config + PCI_COMMAND, val);
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break;
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default:
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break;
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}
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}
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