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products/Sources/formale Sprachen/C/LibreOffice/cui/uiconfig/ui/   (Linux Kernel Version 6.17.9©)  Datei vom 5.10.2025 mit Größe 12 kB image not shown  

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pcit.c


products/Sources/formale Sprachen/C/Linux/arch/mips/sni/pcit.c

/* * PCI Tower specific code * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) */ #include #include #include #include #include #include #include #include #define PORT(_base,_irq) \ { \ .iobase = _base, \ .irq = _irq, \ .uartclk = 1843200, \ .iotype = UPIO_PORT, \ .flags = UPF_BOOT_AUTOCONF, \ } static struct plat_serial8250_port pcit_data[] = { PORT(0x3f8, 0), PORT(0x2f8, 3), { }, }; static struct platform_device pcit_serial8250_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, .dev = { .platform_data = pcit_data, }, }; static struct plat_serial8250_port pcit_cplus_data[] = { PORT(0x3f8, 0), PORT(0x2f8, 3), PORT(0x3e8, 4), PORT(0x2e8, 3), { }, }; static struct platform_device pcit_cplus_serial8250_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, .dev = { .platform_data = pcit_cplus_data, }, }; static struct resource pcit_cmos_rsrc[] = { { .start = 0x70, .end = 0x71, .flags = IORESOURCE_IO }, { .start = 8, .end = 8, .flags = IORESOURCE_IRQ } }; static struct platform_device pcit_cmos_device = { .name = "rtc_cmos", .num_resources = ARRAY_SIZE(pcit_cmos_rsrc), .resource = pcit_cmos_rsrc }; static struct platform_device pcit_pcspeaker_pdev = { .name = "pcspkr", .id = -1, }; static struct resource sni_io_resource = { .start = 0x00000000UL, .end = 0x03bfffffUL, .name = "PCIT IO", .flags = IORESOURCE_IO, }; static struct resource pcit_io_resources[] = { { .start = 0x00, .end = 0x1f, .name = "dma1", .flags = IORESOURCE_BUSY }, { .start = 0x40, .end = 0x5f, .name = "timer", .flags = IORESOURCE_BUSY }, { .start = 0x60, .end = 0x6f, .name = "keyboard", .flags = IORESOURCE_BUSY }, { .start = 0x80, .end = 0x8f, .name = "dma page reg", .flags = IORESOURCE_BUSY }, { .start = 0xc0, .end = 0xdf, .name = "dma2", .flags = IORESOURCE_BUSY }, { .start = 0xcf8, .end = 0xcfb, .name = "PCI config addr", .flags = IORESOURCE_BUSY }, { .start = 0xcfc, .end = 0xcff, .name = "PCI config data", .flags = IORESOURCE_BUSY } }; static void __init sni_pcit_resource_init(void) { int i; /* request I/O space for devices used on all i[345]86 PCs */ for (i = 0; i < ARRAY_SIZE(pcit_io_resources); i++) request_resource(&sni_io_resource, pcit_io_resources + i); } extern struct pci_ops sni_pcit_ops; #ifdef CONFIG_PCI static struct resource sni_mem_resource = { .start = 0x18000000UL, .end = 0x1fbfffffUL, .name = "PCIT PCI MEM", .flags = IORESOURCE_MEM }; static struct pci_controller sni_pcit_controller = { .pci_ops = &sni_pcit_ops, .mem_resource = &sni_mem_resource, .mem_offset = 0x00000000UL, .io_resource = &sni_io_resource, .io_offset = 0x00000000UL, .io_map_base = SNI_PORT_BASE }; #endif /* CONFIG_PCI */ static void enable_pcit_irq(struct irq_data *d) { u32 mask = 1 << (d->irq - SNI_PCIT_INT_START + 24); *(volatile u32 *)SNI_PCIT_INT_REG |= mask; } void disable_pcit_irq(struct irq_data *d) { u32 mask = 1 << (d->irq - SNI_PCIT_INT_START + 24); *(volatile u32 *)SNI_PCIT_INT_REG &= ~mask; } static struct irq_chip pcit_irq_type = { .name = "PCIT", .irq_mask = disable_pcit_irq, .irq_unmask = enable_pcit_irq, }; static void pcit_hwint1(void) { u32 pending = *(volatile u32 *)SNI_PCIT_INT_REG; int irq; clear_c0_status(IE_IRQ1); irq = ffs((pending >> 16) & 0x7f); if (likely(irq > 0)) do_IRQ(irq + SNI_PCIT_INT_START - 1); set_c0_status(IE_IRQ1); } static void pcit_hwint0(void) { u32 pending = *(volatile u32 *)SNI_PCIT_INT_REG; int irq; clear_c0_status(IE_IRQ0); irq = ffs((pending >> 16) & 0x3f); if (likely(irq > 0)) do_IRQ(irq + SNI_PCIT_INT_START - 1); set_c0_status(IE_IRQ0); } static void sni_pcit_hwint(void) { u32 pending = read_c0_cause() & read_c0_status(); if (pending & C_IRQ1) pcit_hwint1(); else if (pending & C_IRQ2) do_IRQ(MIPS_CPU_IRQ_BASE + 4); else if (pending & C_IRQ3) do_IRQ(MIPS_CPU_IRQ_BASE + 5); else if (pending & C_IRQ5) do_IRQ(MIPS_CPU_IRQ_BASE + 7); } static void sni_pcit_hwint_cplus(void) { u32 pending = read_c0_cause() & read_c0_status(); if (pending & C_IRQ0) pcit_hwint0(); else if (pending & C_IRQ1) do_IRQ(MIPS_CPU_IRQ_BASE + 3); else if (pending & C_IRQ2) do_IRQ(MIPS_CPU_IRQ_BASE + 4); else if (pending & C_IRQ3) do_IRQ(MIPS_CPU_IRQ_BASE + 5); else if (pending & C_IRQ5) do_IRQ(MIPS_CPU_IRQ_BASE + 7); } void __init sni_pcit_irq_init(void) { int i; mips_cpu_irq_init(); for (i = SNI_PCIT_INT_START; i <= SNI_PCIT_INT_END; i++) irq_set_chip_and_handler(i, &pcit_irq_type, handle_level_irq); *(volatile u32 *)SNI_PCIT_INT_REG = 0; sni_hwint = sni_pcit_hwint; change_c0_status(ST0_IM, IE_IRQ1); if (request_irq(SNI_PCIT_INT_START + 6, sni_isa_irq_handler, 0, "ISA", NULL)) pr_err("Failed to register ISA interrupt\n"); } void __init sni_pcit_cplus_irq_init(void) { int i; mips_cpu_irq_init(); for (i = SNI_PCIT_INT_START; i <= SNI_PCIT_INT_END; i++) irq_set_chip_and_handler(i, &pcit_irq_type, handle_level_irq); *(volatile u32 *)SNI_PCIT_INT_REG = 0x40000000; sni_hwint = sni_pcit_hwint_cplus; change_c0_status(ST0_IM, IE_IRQ0); if (request_irq(MIPS_CPU_IRQ_BASE + 3, sni_isa_irq_handler, 0, "ISA", NULL)) pr_err("Failed to register ISA interrupt\n"); } void __init sni_pcit_init(void) { ioport_resource.end = sni_io_resource.end; #ifdef CONFIG_PCI PCIBIOS_MIN_IO = 0x9000; register_pci_controller(&sni_pcit_controller); #endif sni_pcit_resource_init(); } static int __init snirm_pcit_setup_devinit(void) { switch (sni_brd_type) { case SNI_BRD_PCI_TOWER: platform_device_register(&pcit_serial8250_device); platform_device_register(&pcit_cmos_device); platform_device_register(&pcit_pcspeaker_pdev); break; case SNI_BRD_PCI_TOWER_CPLUS: platform_device_register(&pcit_cplus_serial8250_device); platform_device_register(&pcit_cmos_device); platform_device_register(&pcit_pcspeaker_pdev); break; } return 0; } device_initcall(snirm_pcit_setup_devinit);

                                                                                                                                                                                                                                                                                                                                                                                                     

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