d70b1e06eb
Pull Hexagon fixes from Richard Kuo: "Changes for the Hexagon architecture (and one touching OpenRISC). They include various fixes to make use of additional arch features and cleanups. The largest functional change is a cleanup of the signal and event return paths" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel: (32 commits) Hexagon: add v4 CS regs to core copyout macro Hexagon: use correct translation for VMALLOC_START Hexagon: use correct translations for DMA mappings Hexagon: fix return value for notify_resume case in do_work_pending Hexagon: fix signal number for user mem faults Hexagon: remove two Kconfig entries arch: remove CONFIG_GENERIC_FIND_NEXT_BIT again Hexagon: update copyright dates Hexagon: add translation types for __vmnewmap Hexagon: fix signal.c compile error Hexagon: break up user fn/arg register setting Hexagon: use generic sys_fork, sys_vfork, and sys_clone Hexagon: fix psp/sp macro Hexagon: fix up int enable/disable at ret_from_fork Hexagon: add IOMEM and _relaxed IO macros Hexagon: switch to using the device type for IO mappings Hexagon: don't print info for offline CPU's Hexagon: add support for single-stepping (v4+) Hexagon: use correct work mask when checking for more work Hexagon: add support for additional exceptions ...
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* Mostly IRQ support for Hexagon
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*
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* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/kernel.h>
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#include <asm/registers.h>
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#include <linux/irq.h>
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#include <linux/hardirq.h>
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/*
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* show_regs - print pt_regs structure
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* @regs: pointer to pt_regs
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*
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* To-do: add all the accessor definitions to registers.h
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*
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* Will make this routine a lot easier to write.
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*/
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void show_regs(struct pt_regs *regs)
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{
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show_regs_print_info(KERN_EMERG);
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printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n",
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regs->restart_r0, regs->syscall_nr);
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printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);
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printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n",
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regs->lc0, regs->sa0, regs->m0);
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printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n",
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regs->lc1, regs->sa1, regs->m1);
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printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n",
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regs->gp, regs->ugp, regs->usr);
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printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n",
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regs->cs0, regs->cs1);
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printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00,
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regs->r01,
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regs->r02,
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regs->r03);
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printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04,
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regs->r05,
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regs->r06,
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regs->r07);
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printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08,
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regs->r09,
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regs->r10,
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regs->r11);
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printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12,
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regs->r13,
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regs->r14,
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regs->r15);
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printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16,
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regs->r17,
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regs->r18,
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regs->r19);
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printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20,
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regs->r21,
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regs->r22,
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regs->r23);
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printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24,
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regs->r25,
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regs->r26,
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regs->r27);
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printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28,
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regs->r29,
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regs->r30,
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regs->r31);
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printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n",
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pt_elr(regs), pt_cause(regs), user_mode(regs));
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printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n",
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pt_psp(regs), pt_badva(regs), ints_enabled(regs));
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}
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void dummy_handler(struct pt_regs *regs)
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{
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unsigned int elr = pt_elr(regs);
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printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr);
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}
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void arch_do_IRQ(struct pt_regs *regs)
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{
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int irq = pt_cause(regs);
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struct pt_regs *old_regs = set_irq_regs(regs);
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irq_enter();
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generic_handle_irq(irq);
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irq_exit();
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set_irq_regs(old_regs);
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}
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