18743d2781
Now that the GIC properly uses IRQ domains, kill off the per-platform routing tables that were used to make the GIC appear transparent. This includes: - removing the mapping tables and the support for applying them, - moving GIC IPI support to the GIC driver, - properly routing the i8259 through the GIC on Malta, and - updating IRQ assignments on SEAD-3 when the GIC is present. Platforms no longer will pass an interrupt mapping table to gic_init. Instead, they will pass the CPU interrupt vector (2 - 7) that they expect the GIC to route interrupts to. Note that in EIC mode this value is ignored and all GIC interrupts are routed to EIC vector 1. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Jason Cooper <jason@lakedaemon.net> Reviewed-by: Qais Yousef <qais.yousef@imgtec.com> Tested-by: Qais Yousef <qais.yousef@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jeffrey Deans <jeffrey.deans@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Jonas Gorski <jogo@openwrt.org> Cc: John Crispin <blogic@openwrt.org> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7816/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/serial_8250.h>
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#include <asm/gic.h>
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#include <asm/mips-boards/sead3int.h>
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#define UART(base) \
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{ \
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.mapbase = base, \
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.irq = -1, \
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.uartclk = 14745600, \
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.iotype = UPIO_MEM32, \
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \
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.regshift = 2, \
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}
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static struct plat_serial8250_port uart8250_data[] = {
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UART(0x1f000900), /* ttyS0 = USB */
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UART(0x1f000800), /* ttyS1 = RS232 */
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{ },
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};
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static struct platform_device uart8250_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM2,
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.dev = {
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.platform_data = uart8250_data,
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},
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};
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static int __init uart8250_init(void)
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{
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if (gic_present) {
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uart8250_data[0].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART0;
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uart8250_data[1].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART1;
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} else {
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uart8250_data[0].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART0;
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uart8250_data[1].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART1;
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}
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return platform_device_register(&uart8250_device);
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}
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module_init(uart8250_init);
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MODULE_AUTHOR("Chris Dearman <chris@mips.com>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("8250 UART probe driver for SEAD3");
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