diff options
Diffstat (limited to 'arch/mips/mips-boards/atlas')
| -rw-r--r-- | arch/mips/mips-boards/atlas/Makefile | 22 | ||||
| -rw-r--r-- | arch/mips/mips-boards/atlas/atlas_gdb.c | 97 | ||||
| -rw-r--r-- | arch/mips/mips-boards/atlas/atlas_int.c | 272 | ||||
| -rw-r--r-- | arch/mips/mips-boards/atlas/atlas_setup.c | 82 |
4 files changed, 0 insertions, 473 deletions
diff --git a/arch/mips/mips-boards/atlas/Makefile b/arch/mips/mips-boards/atlas/Makefile deleted file mode 100644 index f71c2dd1041..00000000000 --- a/arch/mips/mips-boards/atlas/Makefile +++ /dev/null @@ -1,22 +0,0 @@ -# -# Carsten Langgaard, carstenl@mips.com -# Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. -# -# This program is free software; you can distribute it and/or modify it -# under the terms of the GNU General Public License (Version 2) as -# published by the Free Software Foundation. -# -# This program is distributed in the hope it will be useful, but WITHOUT -# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -# for more details. -# -# You should have received a copy of the GNU General Public License along -# with this program; if not, write to the Free Software Foundation, Inc., -# 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. -# - -obj-y := atlas_int.o atlas_setup.o -obj-$(CONFIG_KGDB) += atlas_gdb.o - -EXTRA_CFLAGS += -Werror diff --git a/arch/mips/mips-boards/atlas/atlas_gdb.c b/arch/mips/mips-boards/atlas/atlas_gdb.c deleted file mode 100644 index 00c98cff62d..00000000000 --- a/arch/mips/mips-boards/atlas/atlas_gdb.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * This is the interface to the remote debugger stub. - */ -#include <asm/io.h> -#include <asm/mips-boards/atlas.h> -#include <asm/mips-boards/saa9730_uart.h> - -#define INB(a) inb((unsigned long)a) -#define OUTB(x, a) outb(x, (unsigned long)a) - -/* - * This is the interface to the remote debugger stub - * if the Philips part is used for the debug port, - * called from the platform setup code. - */ -void *saa9730_base = (void *)ATLAS_SAA9730_REG; - -static int saa9730_kgdb_active = 0; - -#define SAA9730_BAUDCLOCK(baud) (((ATLAS_SAA9730_BAUDCLOCK/(baud))/16)-1) - -int saa9730_kgdb_hook(int speed) -{ - int baudclock; - t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR); - - /* - * Clear all interrupts - */ - (void) INB(&kgdb_uart->Lsr); - (void) INB(&kgdb_uart->Msr); - (void) INB(&kgdb_uart->Thr_Rbr); - (void) INB(&kgdb_uart->Iir_Fcr); - - /* - * Now, initialize the UART - */ - /* 8 data bits, one stop bit, no parity */ - OUTB(SAA9730_LCR_DATA8, &kgdb_uart->Lcr); - - baudclock = SAA9730_BAUDCLOCK(speed); - - OUTB((baudclock >> 16) & 0xff, &kgdb_uart->BaudDivMsb); - OUTB( baudclock & 0xff, &kgdb_uart->BaudDivLsb); - - /* Set RTS/DTR active */ - OUTB(SAA9730_MCR_DTR | SAA9730_MCR_RTS, &kgdb_uart->Mcr); - saa9730_kgdb_active = 1; - - return speed; -} - -int saa9730_putDebugChar(char c) -{ - t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR); - - if (!saa9730_kgdb_active) { /* need to init device first */ - return 0; - } - - while (!(INB(&kgdb_uart->Lsr) & SAA9730_LSR_THRE)) - ; - OUTB(c, &kgdb_uart->Thr_Rbr); - - return 1; -} - -char saa9730_getDebugChar(void) -{ - t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR); - char c; - - if (!saa9730_kgdb_active) { /* need to init device first */ - return 0; - } - while (!(INB(&kgdb_uart->Lsr) & SAA9730_LSR_DR)) - ; - - c = INB(&kgdb_uart->Thr_Rbr); - return(c); -} diff --git a/arch/mips/mips-boards/atlas/atlas_int.c b/arch/mips/mips-boards/atlas/atlas_int.c deleted file mode 100644 index 6fb29c3ff62..00000000000 --- a/arch/mips/mips-boards/atlas/atlas_int.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * Copyright (C) 1999, 2000, 2006 MIPS Technologies, Inc. - * All rights reserved. - * Authors: Carsten Langgaard <carstenl@mips.com> - * Maciej W. Rozycki <macro@mips.com> - * - * ######################################################################## - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## - * - * Routines for generic manipulation of the interrupts found on the MIPS - * Atlas board. - * - */ -#include <linux/compiler.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> -#include <linux/kernel.h> - -#include <asm/gdb-stub.h> -#include <asm/io.h> -#include <asm/irq_cpu.h> -#include <asm/msc01_ic.h> - -#include <asm/mips-boards/atlas.h> -#include <asm/mips-boards/atlasint.h> -#include <asm/mips-boards/generic.h> - -static struct atlas_ictrl_regs *atlas_hw0_icregs; - -#if 0 -#define DEBUG_INT(x...) printk(x) -#else -#define DEBUG_INT(x...) -#endif - -void disable_atlas_irq(unsigned int irq_nr) -{ - atlas_hw0_icregs->intrsten = 1 << (irq_nr - ATLAS_INT_BASE); - iob(); -} - -void enable_atlas_irq(unsigned int irq_nr) -{ - atlas_hw0_icregs->intseten = 1 << (irq_nr - ATLAS_INT_BASE); - iob(); -} - -static void end_atlas_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_atlas_irq(irq); -} - -static struct irq_chip atlas_irq_type = { - .name = "Atlas", - .ack = disable_atlas_irq, - .mask = disable_atlas_irq, - .mask_ack = disable_atlas_irq, - .unmask = enable_atlas_irq, - .eoi = enable_atlas_irq, - .end = end_atlas_irq, -}; - -static inline int ls1bit32(unsigned int x) -{ - int b = 31, s; - - s = 16; if (x << 16 == 0) s = 0; b -= s; x <<= s; - s = 8; if (x << 8 == 0) s = 0; b -= s; x <<= s; - s = 4; if (x << 4 == 0) s = 0; b -= s; x <<= s; - s = 2; if (x << 2 == 0) s = 0; b -= s; x <<= s; - s = 1; if (x << 1 == 0) s = 0; b -= s; - - return b; -} - -static inline void atlas_hw0_irqdispatch(void) -{ - unsigned long int_status; - int irq; - - int_status = atlas_hw0_icregs->intstatus; - - /* if int_status == 0, then the interrupt has already been cleared */ - if (unlikely(int_status == 0)) - return; - - irq = ATLAS_INT_BASE + ls1bit32(int_status); - - DEBUG_INT("atlas_hw0_irqdispatch: irq=%d\n", irq); - - do_IRQ(irq); -} - -static inline int clz(unsigned long x) -{ - __asm__( - " .set push \n" - " .set mips32 \n" - " clz %0, %1 \n" - " .set pop \n" - : "=r" (x) - : "r" (x)); - - return x; -} - -/* - * Version of ffs that only looks at bits 12..15. - */ -static inline unsigned int irq_ffs(unsigned int pending) -{ -#if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) - return -clz(pending) + 31 - CAUSEB_IP; -#else - unsigned int a0 = 7; - unsigned int t0; - - t0 = s0 & 0xf000; - t0 = t0 < 1; - t0 = t0 << 2; - a0 = a0 - t0; - s0 = s0 << t0; - - t0 = s0 & 0xc000; - t0 = t0 < 1; - t0 = t0 << 1; - a0 = a0 - t0; - s0 = s0 << t0; - - t0 = s0 & 0x8000; - t0 = t0 < 1; - //t0 = t0 << 2; - a0 = a0 - t0; - //s0 = s0 << t0; - - return a0; -#endif -} - -/* - * IRQs on the Atlas board look basically like (all external interrupt - * sources are combined together on hardware interrupt 0 (MIPS IRQ 2)): - * - * MIPS IRQ Source - * -------- ------ - * 0 Software 0 (reschedule IPI on MT) - * 1 Software 1 (remote call IPI on MT) - * 2 Combined Atlas hardware interrupt (hw0) - * 3 Hardware (ignored) - * 4 Hardware (ignored) - * 5 Hardware (ignored) - * 6 Hardware (ignored) - * 7 R4k timer (what we use) - * - * We handle the IRQ according to _our_ priority which is: - * - * Highest ---- R4k Timer - * Lowest ---- Software 0 - * - * then we just return, if multiple IRQs are pending then we will just take - * another exception, big deal. - */ -asmlinkage void plat_irq_dispatch(void) -{ - unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; - int irq; - - irq = irq_ffs(pending); - - if (irq == MIPSCPU_INT_ATLAS) - atlas_hw0_irqdispatch(); - else if (irq >= 0) - do_IRQ(MIPS_CPU_IRQ_BASE + irq); - else - spurious_interrupt(); -} - -static inline void init_atlas_irqs(int base) -{ - int i; - - atlas_hw0_icregs = (struct atlas_ictrl_regs *) - ioremap(ATLAS_ICTRL_REGS_BASE, - sizeof(struct atlas_ictrl_regs *)); - - /* - * Mask out all interrupt by writing "1" to all bit position in - * the interrupt reset reg. - */ - atlas_hw0_icregs->intrsten = 0xffffffff; - - for (i = ATLAS_INT_BASE; i <= ATLAS_INT_END; i++) - set_irq_chip_and_handler(i, &atlas_irq_type, handle_level_irq); -} - -static struct irqaction atlasirq = { - .handler = no_action, - .name = "Atlas cascade" -}; - -msc_irqmap_t __initdata msc_irqmap[] = { - {MSC01C_INT_TMR, MSC01_IRQ_EDGE, 0}, - {MSC01C_INT_PCI, MSC01_IRQ_LEVEL, 0}, -}; -int __initdata msc_nr_irqs = ARRAY_SIZE(msc_irqmap); - -msc_irqmap_t __initdata msc_eicirqmap[] = { - {MSC01E_INT_SW0, MSC01_IRQ_LEVEL, 0}, - {MSC01E_INT_SW1, MSC01_IRQ_LEVEL, 0}, - {MSC01E_INT_ATLAS, MSC01_IRQ_LEVEL, 0}, - {MSC01E_INT_TMR, MSC01_IRQ_EDGE, 0}, - {MSC01E_INT_PCI, MSC01_IRQ_LEVEL, 0}, - {MSC01E_INT_PERFCTR, MSC01_IRQ_LEVEL, 0}, - {MSC01E_INT_CPUCTR, MSC01_IRQ_LEVEL, 0} -}; -int __initdata msc_nr_eicirqs = ARRAY_SIZE(msc_eicirqmap); - -void __init arch_init_irq(void) -{ - init_atlas_irqs(ATLAS_INT_BASE); - - if (!cpu_has_veic) - mips_cpu_irq_init(); - - switch(mips_revision_corid) { - case MIPS_REVISION_CORID_CORE_MSC: - case MIPS_REVISION_CORID_CORE_FPGA2: - case MIPS_REVISION_CORID_CORE_FPGA3: - case MIPS_REVISION_CORID_CORE_FPGA4: - case MIPS_REVISION_CORID_CORE_24K: - case MIPS_REVISION_CORID_CORE_EMUL_MSC: - if (cpu_has_veic) - init_msc_irqs(MSC01E_INT_BASE, MSC01E_INT_BASE, - msc_eicirqmap, msc_nr_eicirqs); - else - init_msc_irqs(MSC01E_INT_BASE, MSC01C_INT_BASE, - msc_irqmap, msc_nr_irqs); - } - - if (cpu_has_veic) { - set_vi_handler(MSC01E_INT_ATLAS, atlas_hw0_irqdispatch); - setup_irq(MSC01E_INT_BASE + MSC01E_INT_ATLAS, &atlasirq); - } else if (cpu_has_vint) { - set_vi_handler(MIPSCPU_INT_ATLAS, atlas_hw0_irqdispatch); -#ifdef CONFIG_MIPS_MT_SMTC - setup_irq_smtc(MIPS_CPU_IRQ_BASE + MIPSCPU_INT_ATLAS, - &atlasirq, (0x100 << MIPSCPU_INT_ATLAS)); -#else /* Not SMTC */ - setup_irq(MIPS_CPU_IRQ_BASE + MIPSCPU_INT_ATLAS, &atlasirq); -#endif /* CONFIG_MIPS_MT_SMTC */ - } else - setup_irq(MIPS_CPU_IRQ_BASE + MIPSCPU_INT_ATLAS, &atlasirq); -} diff --git a/arch/mips/mips-boards/atlas/atlas_setup.c b/arch/mips/mips-boards/atlas/atlas_setup.c deleted file mode 100644 index 5c500802271..00000000000 --- a/arch/mips/mips-boards/atlas/atlas_setup.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/tty.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <linux/serial_8250.h> - -#include <asm/cpu.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/mips-boards/generic.h> -#include <asm/mips-boards/prom.h> -#include <asm/mips-boards/atlas.h> -#include <asm/mips-boards/atlasint.h> -#include <asm/time.h> -#include <asm/traps.h> - -static void __init serial_init(void); - -const char *get_system_type(void) -{ - return "MIPS Atlas"; -} - -const char display_string[] = " LINUX ON ATLAS "; - -void __init plat_mem_setup(void) -{ - mips_pcibios_init(); - - ioport_resource.end = 0x7fffffff; - - serial_init(); - -#ifdef CONFIG_KGDB - kgdb_config(); -#endif - mips_reboot_setup(); -} - -static void __init serial_init(void) -{ -#ifdef CONFIG_SERIAL_8250 - struct uart_port s; - - memset(&s, 0, sizeof(s)); - -#ifdef CONFIG_CPU_LITTLE_ENDIAN - s.iobase = ATLAS_UART_REGS_BASE; -#else - s.iobase = ATLAS_UART_REGS_BASE+3; -#endif - s.irq = ATLAS_INT_UART; - s.uartclk = ATLAS_BASE_BAUD * 16; - s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ; - s.iotype = UPIO_PORT; - s.regshift = 3; - - if (early_serial_setup(&s) != 0) { - printk(KERN_ERR "Serial setup failed!\n"); - } -#endif -} |