From 506b7ddf889312659b36c667f7ae17bc9e909418 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Andreas=20F=C3=A4rber?= Date: Mon, 9 Jan 2012 02:04:05 +0100 Subject: [PATCH] prep: Use i82378 PCI->ISA bridge for 'prep' machine MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Speaker I/O, ISA bus, i8259 PIC, RTC and DMA are no longer set up individually by the machine. Effectively, no-op speaker I/O is replaced by pcspk; PIT and i82374 DMA are introduced. Signed-off-by: Hervé Poussineau Remove related dead, alternative code. Wire up PCI host bridge IRQs via GPIO-in IRQs of PCI->ISA bridge. Signed-off-by: Andreas Färber Cc: Alexander Graf Cc: Jan Kiszka --- hw/ppc_prep.c | 61 +++++++++++++---------------------------------------------- 1 file changed, 13 insertions(+), 48 deletions(-) diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c index 62d0e36413..438a75df80 100644 --- a/hw/ppc_prep.c +++ b/hw/ppc_prep.c @@ -83,37 +83,9 @@ static const int ide_irq[2] = { 13, 13 }; static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; -//static ISADevice *pit; - /* ISA IO ports bridge */ #define PPC_IO_BASE 0x80000000 -#if 0 -/* Speaker port 0x61 */ -static int speaker_data_on; -static int dummy_refresh_clock; -#endif - -static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val) -{ -#if 0 - speaker_data_on = (val >> 1) & 1; - pit_set_gate(pit, 2, val & 1); -#endif -} - -static uint32_t speaker_ioport_read (void *opaque, uint32_t addr) -{ -#if 0 - int out; - out = pit_get_out(pit, 2, qemu_get_clock_ns(vm_clock)); - dummy_refresh_clock ^= 1; - return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) | - (dummy_refresh_clock << 4); -#endif - return 0; -} - /* PCI intack register */ /* Read-only register (?) */ static void PPC_intack_write (void *opaque, target_phys_addr_t addr, @@ -526,8 +498,8 @@ static void ppc_prep_init (ram_addr_t ram_size, SysBusDevice *sys; PCIHostState *pcihost; PCIBus *pci_bus; + PCIDevice *pci; ISABus *isa_bus; - qemu_irq *i8259; qemu_irq *cpu_exit_irq; int ppc_boot_device; DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; @@ -629,13 +601,9 @@ static void ppc_prep_init (ram_addr_t ram_size, } } - isa_mem_base = 0xc0000000; if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { hw_error("Only 6xx bus is supported on PREP machine\n"); } - /* Hmm, prep has no pci-isa bridge ??? */ - isa_bus = isa_bus_new(NULL, get_system_io()); - i8259 = i8259_init(isa_bus, first_cpu->irq_inputs[PPC6xx_INPUT_INT]); dev = qdev_create(NULL, "raven-pcihost"); sys = sysbus_from_qdev(dev); @@ -648,13 +616,19 @@ static void ppc_prep_init (ram_addr_t ram_size, fprintf(stderr, "Couldn't create PCI host controller.\n"); exit(1); } - sysbus_connect_irq(&pcihost->busdev, 0, i8259[9]); - sysbus_connect_irq(&pcihost->busdev, 1, i8259[11]); - sysbus_connect_irq(&pcihost->busdev, 2, i8259[9]); - sysbus_connect_irq(&pcihost->busdev, 3, i8259[11]); - isa_bus_irqs(isa_bus, i8259); - // pci_bus = i440fx_init(); + /* PCI -> ISA bridge */ + pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378"); + cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); + qdev_connect_gpio_out(&pci->qdev, 0, + first_cpu->irq_inputs[PPC6xx_INPUT_INT]); + qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq); + sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9)); + sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11)); + sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9)); + sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11)); + isa_bus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&pci->qdev, "isa.0")); + /* Register 8 MB of ISA IO space (needed for non-contiguous map) */ memory_region_init_io(PPC_io_memory, &PPC_prep_io_ops, sysctrl, "ppc-io", 0x00800000); @@ -662,9 +636,6 @@ static void ppc_prep_init (ram_addr_t ram_size, /* init basic PC hardware */ pci_vga_init(pci_bus); - // openpic = openpic_init(0x00000000, 0xF0000000, 1); - // pit = pit_init(0x40, 0); - rtc_init(isa_bus, 2000, NULL); if (serial_hds[0]) serial_isa_init(isa_bus, 0, serial_hds[0]); @@ -691,9 +662,6 @@ static void ppc_prep_init (ram_addr_t ram_size, } isa_create_simple(isa_bus, "i8042"); - cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); - DMA_init(1, cpu_exit_irq); - // SB16_init(); for(i = 0; i < MAX_FD; i++) { @@ -701,9 +669,6 @@ static void ppc_prep_init (ram_addr_t ram_size, } fdctrl_init_isa(isa_bus, fd); - /* Register speaker port */ - register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL); - register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL); /* Register fake IO ports for PREP */ sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET]; register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl); -- 2.11.4.GIT