cffc331a31
MacOS 9 is racy when it comes to accessing the shift register. Fix this by introducing a small delay between data accesses and raising the SR_INT interrupt bit. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
187 lines
5.0 KiB
C
187 lines
5.0 KiB
C
/*
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* QEMU PowerMac emulation shared definitions and prototypes
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*
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* Copyright (c) 2004-2007 Fabrice Bellard
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* Copyright (c) 2007 Jocelyn Mayer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if !defined(__PPC_MAC_H__)
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#define __PPC_MAC_H__
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#include "exec/memory.h"
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#include "hw/sysbus.h"
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#include "hw/ide/internal.h"
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#include "hw/input/adb.h"
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/* SMP is not enabled, for now */
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#define MAX_CPUS 1
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#define BIOS_SIZE (1024 * 1024)
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#define NVRAM_SIZE 0x2000
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#define PROM_FILENAME "openbios-ppc"
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#define PROM_ADDR 0xfff00000
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#define KERNEL_LOAD_ADDR 0x01000000
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#define KERNEL_GAP 0x00100000
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#define ESCC_CLOCK 3686400
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/* Cuda */
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#define TYPE_CUDA "cuda"
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#define CUDA(obj) OBJECT_CHECK(CUDAState, (obj), TYPE_CUDA)
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/**
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* CUDATimer:
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* @counter_value: counter value at load time
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*/
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typedef struct CUDATimer {
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int index;
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uint16_t latch;
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uint16_t counter_value;
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int64_t load_time;
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int64_t next_irq_time;
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uint64_t frequency;
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QEMUTimer *timer;
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} CUDATimer;
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/**
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* CUDAState:
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* @b: B-side data
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* @a: A-side data
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* @dirb: B-side direction (1=output)
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* @dira: A-side direction (1=output)
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* @sr: Shift register
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* @acr: Auxiliary control register
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* @pcr: Peripheral control register
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* @ifr: Interrupt flag register
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* @ier: Interrupt enable register
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* @anh: A-side data, no handshake
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* @last_b: last value of B register
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* @last_acr: last value of ACR register
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*/
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typedef struct CUDAState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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MemoryRegion mem;
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/* cuda registers */
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uint8_t b;
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uint8_t a;
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uint8_t dirb;
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uint8_t dira;
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uint8_t sr;
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uint8_t acr;
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uint8_t pcr;
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uint8_t ifr;
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uint8_t ier;
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uint8_t anh;
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ADBBusState adb_bus;
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CUDATimer timers[2];
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uint32_t tick_offset;
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uint64_t frequency;
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uint8_t last_b;
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uint8_t last_acr;
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/* MacOS 9 is racy and requires a delay upon setting the SR_INT bit */
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QEMUTimer *sr_delay_timer;
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int data_in_size;
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int data_in_index;
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int data_out_index;
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qemu_irq irq;
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uint8_t autopoll;
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uint8_t data_in[128];
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uint8_t data_out[16];
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QEMUTimer *adb_poll_timer;
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} CUDAState;
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/* MacIO */
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#define TYPE_OLDWORLD_MACIO "macio-oldworld"
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#define TYPE_NEWWORLD_MACIO "macio-newworld"
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#define TYPE_MACIO_IDE "macio-ide"
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#define MACIO_IDE(obj) OBJECT_CHECK(MACIOIDEState, (obj), TYPE_MACIO_IDE)
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typedef struct MACIOIDEState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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qemu_irq irq;
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qemu_irq dma_irq;
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MemoryRegion mem;
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IDEBus bus;
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BlockAIOCB *aiocb;
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IDEDMA dma;
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void *dbdma;
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bool dma_active;
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} MACIOIDEState;
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void macio_ide_init_drives(MACIOIDEState *ide, DriveInfo **hd_table);
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void macio_ide_register_dma(MACIOIDEState *ide, void *dbdma, int channel);
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void macio_init(PCIDevice *dev,
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MemoryRegion *pic_mem,
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MemoryRegion *escc_mem);
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/* Heathrow PIC */
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qemu_irq *heathrow_pic_init(MemoryRegion **pmem,
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int nb_cpus, qemu_irq **irqs);
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/* Grackle PCI */
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#define TYPE_GRACKLE_PCI_HOST_BRIDGE "grackle-pcihost"
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PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
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MemoryRegion *address_space_mem,
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MemoryRegion *address_space_io);
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/* UniNorth PCI */
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PCIBus *pci_pmac_init(qemu_irq *pic,
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MemoryRegion *address_space_mem,
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MemoryRegion *address_space_io);
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PCIBus *pci_pmac_u3_init(qemu_irq *pic,
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MemoryRegion *address_space_mem,
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MemoryRegion *address_space_io);
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/* Mac NVRAM */
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#define TYPE_MACIO_NVRAM "macio-nvram"
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#define MACIO_NVRAM(obj) \
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OBJECT_CHECK(MacIONVRAMState, (obj), TYPE_MACIO_NVRAM)
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typedef struct MacIONVRAMState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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uint32_t size;
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uint32_t it_shift;
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MemoryRegion mem;
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uint8_t *data;
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} MacIONVRAMState;
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void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len);
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#endif /* !defined(__PPC_MAC_H__) */
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