diff options
Diffstat (limited to 'arch/blackfin/include/asm/entry.h')
| -rw-r--r-- | arch/blackfin/include/asm/entry.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/arch/blackfin/include/asm/entry.h b/arch/blackfin/include/asm/entry.h deleted file mode 100644 index 4104d5783e2c..000000000000 --- a/arch/blackfin/include/asm/entry.h +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright 2004-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef __BFIN_ENTRY_H -#define __BFIN_ENTRY_H - -#include <asm/setup.h> -#include <asm/page.h> - -#ifdef __ASSEMBLY__ - -#define LFLUSH_I_AND_D 0x00000808 -#define LSIGTRAP 5 - -/* - * NOTE! The single-stepping code assumes that all interrupt handlers - * start by saving SYSCFG on the stack with their first instruction. - */ - -/* This one is used for exceptions, emulation, and NMI. It doesn't push - RETI and doesn't do cli. */ -#define SAVE_ALL_SYS save_context_no_interrupts -/* This is used for all normal interrupts. It saves a minimum of registers - to the stack, loads the IRQ number, and jumps to common code. */ -#ifdef CONFIG_IPIPE -# define LOAD_IPIPE_IPEND \ - P0.l = lo(IPEND); \ - P0.h = hi(IPEND); \ - R1 = [P0]; -#else -# define LOAD_IPIPE_IPEND -#endif - -/* - * Workaround for anomalies 05000283 and 05000315 - */ -#if ANOMALY_05000283 || ANOMALY_05000315 -# define ANOMALY_283_315_WORKAROUND(preg, dreg) \ - cc = dreg == dreg; \ - preg.h = HI(CHIPID); \ - preg.l = LO(CHIPID); \ - if cc jump 1f; \ - dreg.l = W[preg]; \ -1: -#else -# define ANOMALY_283_315_WORKAROUND(preg, dreg) -#endif /* ANOMALY_05000283 || ANOMALY_05000315 */ - -#ifndef CONFIG_EXACT_HWERR -/* As a debugging aid - we save IPEND when DEBUG_KERNEL is on, - * otherwise it is a waste of cycles. - */ -# ifndef CONFIG_DEBUG_KERNEL -#define INTERRUPT_ENTRY(N) \ - [--sp] = SYSCFG; \ - [--sp] = P0; /*orig_p0*/ \ - [--sp] = R0; /*orig_r0*/ \ - [--sp] = (R7:0,P5:0); \ - R0 = (N); \ - LOAD_IPIPE_IPEND \ - jump __common_int_entry; -# else /* CONFIG_DEBUG_KERNEL */ -#define INTERRUPT_ENTRY(N) \ - [--sp] = SYSCFG; \ - [--sp] = P0; /*orig_p0*/ \ - [--sp] = R0; /*orig_r0*/ \ - [--sp] = (R7:0,P5:0); \ - p0.l = lo(IPEND); \ - p0.h = hi(IPEND); \ - r1 = [p0]; \ - R0 = (N); \ - LOAD_IPIPE_IPEND \ - jump __common_int_entry; -# endif /* CONFIG_DEBUG_KERNEL */ - -/* For timer interrupts, we need to save IPEND, since the user_mode - *macro accesses it to determine where to account time. - */ -#define TIMER_INTERRUPT_ENTRY(N) \ - [--sp] = SYSCFG; \ - [--sp] = P0; /*orig_p0*/ \ - [--sp] = R0; /*orig_r0*/ \ - [--sp] = (R7:0,P5:0); \ - p0.l = lo(IPEND); \ - p0.h = hi(IPEND); \ - r1 = [p0]; \ - R0 = (N); \ - jump __common_int_entry; -#else /* CONFIG_EXACT_HWERR is defined */ - -/* if we want hardware error to be exact, we need to do a SSYNC (which forces - * read/writes to complete to the memory controllers), and check to see that - * caused a pending HW error condition. If so, we assume it was caused by user - * space, by setting the same interrupt that we are in (so it goes off again) - * and context restore, and a RTI (without servicing anything). This should - * cause the pending HWERR to fire, and when that is done, this interrupt will - * be re-serviced properly. - * As you can see by the code - we actually need to do two SSYNCS - one to - * make sure the read/writes complete, and another to make sure the hardware - * error is recognized by the core. - * - * The extra nop before the SSYNC is to make sure we work around 05000244, - * since the 283/315 workaround includes a branch to the end - */ -#define INTERRUPT_ENTRY(N) \ - [--sp] = SYSCFG; \ - [--sp] = P0; /*orig_p0*/ \ - [--sp] = R0; /*orig_r0*/ \ - [--sp] = (R7:0,P5:0); \ - R1 = ASTAT; \ - ANOMALY_283_315_WORKAROUND(p0, r0) \ - P0.L = LO(ILAT); \ - P0.H = HI(ILAT); \ - NOP; \ - SSYNC; \ - SSYNC; \ - R0 = [P0]; \ - CC = BITTST(R0, EVT_IVHW_P); \ - IF CC JUMP 1f; \ - ASTAT = R1; \ - p0.l = lo(IPEND); \ - p0.h = hi(IPEND); \ - r1 = [p0]; \ - R0 = (N); \ - LOAD_IPIPE_IPEND \ - jump __common_int_entry; \ -1: ASTAT = R1; \ - RAISE N; \ - (R7:0, P5:0) = [SP++]; \ - SP += 0x8; \ - SYSCFG = [SP++]; \ - CSYNC; \ - RTI; - -#define TIMER_INTERRUPT_ENTRY(N) \ - [--sp] = SYSCFG; \ - [--sp] = P0; /*orig_p0*/ \ - [--sp] = R0; /*orig_r0*/ \ - [--sp] = (R7:0,P5:0); \ - R1 = ASTAT; \ - ANOMALY_283_315_WORKAROUND(p0, r0) \ - P0.L = LO(ILAT); \ - P0.H = HI(ILAT); \ - NOP; \ - SSYNC; \ - SSYNC; \ - R0 = [P0]; \ - CC = BITTST(R0, EVT_IVHW_P); \ - IF CC JUMP 1f; \ - ASTAT = R1; \ - p0.l = lo(IPEND); \ - p0.h = hi(IPEND); \ - r1 = [p0]; \ - R0 = (N); \ - jump __common_int_entry; \ -1: ASTAT = R1; \ - RAISE N; \ - (R7:0, P5:0) = [SP++]; \ - SP += 0x8; \ - SYSCFG = [SP++]; \ - CSYNC; \ - RTI; -#endif /* CONFIG_EXACT_HWERR */ - -/* This one pushes RETI without using CLI. Interrupts are enabled. */ -#define SAVE_CONTEXT_SYSCALL save_context_syscall -#define SAVE_CONTEXT save_context_with_interrupts -#define SAVE_CONTEXT_CPLB save_context_cplb - -#define RESTORE_ALL_SYS restore_context_no_interrupts -#define RESTORE_CONTEXT restore_context_with_interrupts -#define RESTORE_CONTEXT_CPLB restore_context_cplb - -#endif /* __ASSEMBLY__ */ -#endif /* __BFIN_ENTRY_H */ |
