arch: remove blackfin port

The Analog Devices Blackfin port was added in 2007 and was rather
active for a while, but all work on it has come to a standstill
over time, as Analog have changed their product line-up.

Aaron Wu confirmed that the architecture port is no longer relevant,
and multiple people suggested removing blackfin independently because
of some of its oddities like a non-working SMP port, and the amount of
duplication between the chip variants, which cause extra work when
doing cross-architecture changes.

Link: https://docs.blackfin.uclinux.org/
Acked-by: Aaron Wu <Aaron.Wu@analog.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 289 deletions

diff --git a/arch/blackfin/include/asm/irqflags.h b/arch/blackfin/include/asm/irqflags.h
deleted file mode 100644
index 07aff230a812..000000000000
--- a/arch/blackfin/include/asm/irqflags.h
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- * interface to Blackfin CEC
- *
- * Copyright 2009 Analog Devices Inc.
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef __ASM_BFIN_IRQFLAGS_H__
-#define __ASM_BFIN_IRQFLAGS_H__
-
-#include <mach/blackfin.h>
-
-#ifdef CONFIG_SMP
-# include <asm/pda.h>
-# include <asm/processor.h>
-# define bfin_irq_flags cpu_pda[blackfin_core_id()].imask
-#else
-extern unsigned long bfin_irq_flags;
-#endif
-
-static inline notrace void bfin_sti(unsigned long flags)
-{
-	asm volatile("sti %0;" : : "d" (flags));
-}
-
-static inline notrace unsigned long bfin_cli(void)
-{
-	unsigned long flags;
-	asm volatile("cli %0;" : "=d" (flags));
-	return flags;
-}
-
-#ifdef CONFIG_DEBUG_HWERR
-# define bfin_no_irqs 0x3f
-#else
-# define bfin_no_irqs 0x1f
-#endif
-
-/*****************************************************************************/
-/*
- * Hard, untraced CPU interrupt flag manipulation and access.
- */
-static inline notrace void __hard_local_irq_disable(void)
-{
-	bfin_cli();
-}
-
-static inline notrace void __hard_local_irq_enable(void)
-{
-	bfin_sti(bfin_irq_flags);
-}
-
-static inline notrace unsigned long hard_local_save_flags(void)
-{
-	return bfin_read_IMASK();
-}
-
-static inline notrace unsigned long __hard_local_irq_save(void)
-{
-	unsigned long flags;
-	flags = bfin_cli();
-#ifdef CONFIG_DEBUG_HWERR
-	bfin_sti(0x3f);
-#endif
-	return flags;
-}
-
-static inline notrace int hard_irqs_disabled_flags(unsigned long flags)
-{
-#ifdef CONFIG_BF60x
-	return (flags & IMASK_IVG11) == 0;
-#else
-	return (flags & ~0x3f) == 0;
-#endif
-}
-
-static inline notrace int hard_irqs_disabled(void)
-{
-	unsigned long flags = hard_local_save_flags();
-	return hard_irqs_disabled_flags(flags);
-}
-
-static inline notrace void __hard_local_irq_restore(unsigned long flags)
-{
-	if (!hard_irqs_disabled_flags(flags))
-		__hard_local_irq_enable();
-}
-
-/*****************************************************************************/
-/*
- * Interrupt pipe handling.
- */
-#ifdef CONFIG_IPIPE
-
-#include <linux/compiler.h>
-#include <linux/ipipe_trace.h>
-/*
- * Way too many inter-deps between low-level headers in this port, so
- * we redeclare the required bits we cannot pick from
- * <asm/ipipe_base.h> to prevent circular dependencies.
- */
-void __ipipe_stall_root(void);
-void __ipipe_unstall_root(void);
-unsigned long __ipipe_test_root(void);
-unsigned long __ipipe_test_and_stall_root(void);
-void __ipipe_restore_root(unsigned long flags);
-
-#ifdef CONFIG_IPIPE_DEBUG_CONTEXT
-struct ipipe_domain;
-extern struct ipipe_domain ipipe_root;
-void ipipe_check_context(struct ipipe_domain *ipd);
-#define __check_irqop_context(ipd)  ipipe_check_context(&ipipe_root)
-#else /* !CONFIG_IPIPE_DEBUG_CONTEXT */
-#define __check_irqop_context(ipd)  do { } while (0)
-#endif /* !CONFIG_IPIPE_DEBUG_CONTEXT */
-
-/*
- * Interrupt pipe interface to linux/irqflags.h.
- */
-static inline notrace void arch_local_irq_disable(void)
-{
-	__check_irqop_context();
-	__ipipe_stall_root();
-	barrier();
-}
-
-static inline notrace void arch_local_irq_enable(void)
-{
-	barrier();
-	__check_irqop_context();
-	__ipipe_unstall_root();
-}
-
-static inline notrace unsigned long arch_local_save_flags(void)
-{
-	return __ipipe_test_root() ? bfin_no_irqs : bfin_irq_flags;
-}
-
-static inline notrace int arch_irqs_disabled_flags(unsigned long flags)
-{
-	return flags == bfin_no_irqs;
-}
-
-static inline notrace unsigned long arch_local_irq_save(void)
-{
-	unsigned long flags;
-
-	__check_irqop_context();
-	flags = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags;
-	barrier();
-
-	return flags;
-}
-
-static inline notrace void arch_local_irq_restore(unsigned long flags)
-{
-	__check_irqop_context();
-	__ipipe_restore_root(flags == bfin_no_irqs);
-}
-
-static inline notrace unsigned long arch_mangle_irq_bits(int virt, unsigned long real)
-{
-	/*
-	 * Merge virtual and real interrupt mask bits into a single
-	 * 32bit word.
-	 */
-	return (real & ~(1 << 31)) | ((virt != 0) << 31);
-}
-
-static inline notrace int arch_demangle_irq_bits(unsigned long *x)
-{
-	int virt = (*x & (1 << 31)) != 0;
-	*x &= ~(1L << 31);
-	return virt;
-}
-
-/*
- * Interface to various arch routines that may be traced.
- */
-#ifdef CONFIG_IPIPE_TRACE_IRQSOFF
-static inline notrace void hard_local_irq_disable(void)
-{
-	if (!hard_irqs_disabled()) {
-		__hard_local_irq_disable();
-		ipipe_trace_begin(0x80000000);
-	}
-}
-
-static inline notrace void hard_local_irq_enable(void)
-{
-	if (hard_irqs_disabled()) {
-		ipipe_trace_end(0x80000000);
-		__hard_local_irq_enable();
-	}
-}
-
-static inline notrace unsigned long hard_local_irq_save(void)
-{
-	unsigned long flags = hard_local_save_flags();
-	if (!hard_irqs_disabled_flags(flags)) {
-		__hard_local_irq_disable();
-		ipipe_trace_begin(0x80000001);
-	}
-	return flags;
-}
-
-static inline notrace void hard_local_irq_restore(unsigned long flags)
-{
-	if (!hard_irqs_disabled_flags(flags)) {
-		ipipe_trace_end(0x80000001);
-		__hard_local_irq_enable();
-	}
-}
-
-#else /* !CONFIG_IPIPE_TRACE_IRQSOFF */
-# define hard_local_irq_disable()	__hard_local_irq_disable()
-# define hard_local_irq_enable()	__hard_local_irq_enable()
-# define hard_local_irq_save()		__hard_local_irq_save()
-# define hard_local_irq_restore(flags)	__hard_local_irq_restore(flags)
-#endif /* !CONFIG_IPIPE_TRACE_IRQSOFF */
-
-#define hard_local_irq_save_cond()		hard_local_irq_save()
-#define hard_local_irq_restore_cond(flags)	hard_local_irq_restore(flags)
-
-#else /* !CONFIG_IPIPE */
-
-/*
- * Direct interface to linux/irqflags.h.
- */
-#define arch_local_save_flags()		hard_local_save_flags()
-#define arch_local_irq_save()		__hard_local_irq_save()
-#define arch_local_irq_restore(flags)	__hard_local_irq_restore(flags)
-#define arch_local_irq_enable()		__hard_local_irq_enable()
-#define arch_local_irq_disable()	__hard_local_irq_disable()
-#define arch_irqs_disabled_flags(flags)	hard_irqs_disabled_flags(flags)
-#define arch_irqs_disabled()		hard_irqs_disabled()
-
-/*
- * Interface to various arch routines that may be traced.
- */
-#define hard_local_irq_save()		__hard_local_irq_save()
-#define hard_local_irq_restore(flags)	__hard_local_irq_restore(flags)
-#define hard_local_irq_enable()		__hard_local_irq_enable()
-#define hard_local_irq_disable()	__hard_local_irq_disable()
-#define hard_local_irq_save_cond()		hard_local_save_flags()
-#define hard_local_irq_restore_cond(flags)	do { (void)(flags); } while (0)
-
-#endif /* !CONFIG_IPIPE */
-
-#ifdef CONFIG_SMP
-#define hard_local_irq_save_smp()		hard_local_irq_save()
-#define hard_local_irq_restore_smp(flags)	hard_local_irq_restore(flags)
-#else
-#define hard_local_irq_save_smp()		hard_local_save_flags()
-#define hard_local_irq_restore_smp(flags)	do { (void)(flags); } while (0)
-#endif
-
-/*
- * Remap the arch-neutral IRQ state manipulation macros to the
- * blackfin-specific hard_local_irq_* API.
- */
-#define local_irq_save_hw(flags)			\
-	do {						\
-		(flags) = hard_local_irq_save();	\
-	} while (0)
-#define local_irq_restore_hw(flags)		\
-	do {					\
-		hard_local_irq_restore(flags);	\
-	} while (0)
-#define local_irq_disable_hw()			\
-	do {					\
-		hard_local_irq_disable();	\
-	} while (0)
-#define local_irq_enable_hw()			\
-	do {					\
-		hard_local_irq_enable();	\
-	} while (0)
-#define local_irq_save_hw_notrace(flags)		\
-	do {						\
-		(flags) = __hard_local_irq_save();	\
-	} while (0)
-#define local_irq_restore_hw_notrace(flags)		\
-	do {						\
-		__hard_local_irq_restore(flags);	\
-	} while (0)
-
-#define irqs_disabled_hw()	hard_irqs_disabled()
-
-#endif