Blackfin arch: Update adeos blackfin arch patch to 1.9-00

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

4 files changed, 69 insertions, 81 deletions

diff --git a/arch/blackfin/include/asm/ipipe.h b/arch/blackfin/include/asm/ipipe.h
index 76f53d8b9a0d..343b56361ec9 100644
--- a/arch/blackfin/include/asm/ipipe.h
+++ b/arch/blackfin/include/asm/ipipe.h
@@ -35,9 +35,9 @@
 #include <asm/atomic.h>
 #include <asm/traps.h>
 
-#define IPIPE_ARCH_STRING     "1.8-00"
+#define IPIPE_ARCH_STRING     "1.9-00"
 #define IPIPE_MAJOR_NUMBER    1
-#define IPIPE_MINOR_NUMBER    8
+#define IPIPE_MINOR_NUMBER    9
 #define IPIPE_PATCH_NUMBER    0
 
 #ifdef CONFIG_SMP
@@ -83,9 +83,9 @@ struct ipipe_sysinfo {
                                 "%2 = CYCLES2\n"                \
                                 "CC = %2 == %0\n"               \
                                 "if ! CC jump 1b\n"             \
-                                : "=r" (((unsigned long *)&t)[1]),      \
-                                  "=r" (((unsigned long *)&t)[0]),      \
-                                  "=r" (__cy2)                          \
+                                : "=d,a" (((unsigned long *)&t)[1]),    \
+                                  "=d,a" (((unsigned long *)&t)[0]),    \
+                                  "=d,a" (__cy2)                                \
                                 : /*no input*/ : "CC");                 \
         t;                                                              \
         })
@@ -118,35 +118,40 @@ void __ipipe_disable_irqdesc(struct ipipe_domain *ipd,
 
 #define __ipipe_disable_irq(irq)        (irq_desc[irq].chip->mask(irq))
 
-#define __ipipe_lock_root()                                     \
-        set_bit(IPIPE_ROOTLOCK_FLAG, &ipipe_root_domain->flags)
+static inline int __ipipe_check_tickdev(const char *devname)
+{
+        return 1;
+}
 
-#define __ipipe_unlock_root()                                   \
-        clear_bit(IPIPE_ROOTLOCK_FLAG, &ipipe_root_domain->flags)
+static inline void __ipipe_lock_root(void)
+{
+        set_bit(IPIPE_SYNCDEFER_FLAG, &ipipe_root_cpudom_var(status));
+}
+
+static inline void __ipipe_unlock_root(void)
+{
+        clear_bit(IPIPE_SYNCDEFER_FLAG, &ipipe_root_cpudom_var(status));
+}
 
 void __ipipe_enable_pipeline(void);
 
 #define __ipipe_hook_critical_ipi(ipd) do { } while (0)
 
-#define __ipipe_sync_pipeline(syncmask)                                 \
-        do {                                                            \
-                struct ipipe_domain *ipd = ipipe_current_domain;        \
-                if (likely(ipd != ipipe_root_domain || !test_bit(IPIPE_ROOTLOCK_FLAG, &ipd->flags))) \
-                        __ipipe_sync_stage(syncmask);                   \
-        } while (0)
+#define __ipipe_sync_pipeline  ___ipipe_sync_pipeline
+void ___ipipe_sync_pipeline(unsigned long syncmask);
 
 void __ipipe_handle_irq(unsigned irq, struct pt_regs *regs);
 
 int __ipipe_get_irq_priority(unsigned irq);
 
-int __ipipe_get_irqthread_priority(unsigned irq);
-
 void __ipipe_stall_root_raw(void);
 
 void __ipipe_unstall_root_raw(void);
 
 void __ipipe_serial_debug(const char *fmt, ...);
 
+asmlinkage void __ipipe_call_irqtail(unsigned long addr);
+
 DECLARE_PER_CPU(struct pt_regs, __ipipe_tick_regs);
 
 extern unsigned long __ipipe_core_clock;
@@ -162,42 +167,25 @@ static inline unsigned long __ipipe_ffnz(unsigned long ul)
 
 #define __ipipe_run_irqtail()  /* Must be a macro */                    \
         do {                                                            \
-                asmlinkage void __ipipe_call_irqtail(void);             \
                 unsigned long __pending;                                \
-                CSYNC();                                        \
+                CSYNC();                                                \
                 __pending = bfin_read_IPEND();                          \
                 if (__pending & 0x8000) {                               \
                         __pending &= ~0x8010;                           \
                         if (__pending && (__pending & (__pending - 1)) == 0) \
-                                __ipipe_call_irqtail();                 \
+                                __ipipe_call_irqtail(__ipipe_irq_tail_hook); \
                 }                                                       \
         } while (0)
 
 #define __ipipe_run_isr(ipd, irq)                                       \
         do {                                                            \
                 if (ipd == ipipe_root_domain) {                         \
-                        /*                                              \
-                         * Note: the I-pipe implements a threaded interrupt model on \
-                         * this arch for Linux external IRQs. The interrupt handler we \
-                         * call here only wakes up the associated IRQ thread. \
-                         */                                             \
-                        if (ipipe_virtual_irq_p(irq)) {                 \
-                                /* No irqtail here; virtual interrupts have no effect \
-                                   on IPEND so there is no need for processing \
-                                   deferral. */                         \
-                                local_irq_enable_nohead(ipd);           \
+                        local_irq_enable_hw();                          \
+                        if (ipipe_virtual_irq_p(irq))                   \
                                 ipd->irqs[irq].handler(irq, ipd->irqs[irq].cookie); \
-                                local_irq_disable_nohead(ipd);          \
-                        } else                                          \
-                                /*                                      \
-                                 * No need to run the irqtail here either; \
-                                 * we can't be preempted by hw IRQs, so \
-                                 * non-Linux IRQs cannot stack over the short \
-                                 * thread wakeup code. Which in turn means \
-                                 * that no irqtail condition could be pending \
-                                 * for domains above Linux in the pipeline. \
-                                 */                                     \
+                        else                                            \
                                 ipd->irqs[irq].handler(irq, &__raw_get_cpu_var(__ipipe_tick_regs)); \
+                        local_irq_disable_hw();                         \
                 } else {                                                \
                         __clear_bit(IPIPE_SYNC_FLAG, &ipipe_cpudom_var(ipd, status)); \
                         local_irq_enable_nohead(ipd);                   \
@@ -217,42 +205,24 @@ void ipipe_init_irq_threads(void);
 
 int ipipe_start_irq_thread(unsigned irq, struct irq_desc *desc);
 
-#define IS_SYSIRQ(irq)          ((irq) > IRQ_CORETMR && (irq) <= SYS_IRQS)
-#define IS_GPIOIRQ(irq)         ((irq) >= GPIO_IRQ_BASE && (irq) < NR_IRQS)
-
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+#define IRQ_SYSTMR              IRQ_CORETMR
+#define IRQ_PRIOTMR             IRQ_CORETMR
+#else
 #define IRQ_SYSTMR              IRQ_TIMER0
 #define IRQ_PRIOTMR             CONFIG_IRQ_TIMER0
+#endif
 
-#if defined(CONFIG_BF531) || defined(CONFIG_BF532) || defined(CONFIG_BF533)
-#define PRIO_GPIODEMUX(irq)     CONFIG_PFA
-#elif defined(CONFIG_BF534) || defined(CONFIG_BF536) || defined(CONFIG_BF537)
-#define PRIO_GPIODEMUX(irq)     CONFIG_IRQ_PROG_INTA
-#elif defined(CONFIG_BF52x)
-#define PRIO_GPIODEMUX(irq)     ((irq) == IRQ_PORTF_INTA ? CONFIG_IRQ_PORTF_INTA : \
-                                 (irq) == IRQ_PORTG_INTA ? CONFIG_IRQ_PORTG_INTA : \
-                                 (irq) == IRQ_PORTH_INTA ? CONFIG_IRQ_PORTH_INTA : \
-                                 -1)
-#elif defined(CONFIG_BF561)
-#define PRIO_GPIODEMUX(irq)     ((irq) == IRQ_PROG0_INTA ? CONFIG_IRQ_PROG0_INTA : \
-                                 (irq) == IRQ_PROG1_INTA ? CONFIG_IRQ_PROG1_INTA : \
-                                 (irq) == IRQ_PROG2_INTA ? CONFIG_IRQ_PROG2_INTA : \
-                                 -1)
+#ifdef CONFIG_BF561
 #define bfin_write_TIMER_DISABLE(val)   bfin_write_TMRS8_DISABLE(val)
 #define bfin_write_TIMER_ENABLE(val)    bfin_write_TMRS8_ENABLE(val)
 #define bfin_write_TIMER_STATUS(val)    bfin_write_TMRS8_STATUS(val)
 #define bfin_read_TIMER_STATUS()        bfin_read_TMRS8_STATUS()
 #elif defined(CONFIG_BF54x)
-#define PRIO_GPIODEMUX(irq)     ((irq) == IRQ_PINT0 ? CONFIG_IRQ_PINT0 : \
-                                 (irq) == IRQ_PINT1 ? CONFIG_IRQ_PINT1 : \
-                                 (irq) == IRQ_PINT2 ? CONFIG_IRQ_PINT2 : \
-                                 (irq) == IRQ_PINT3 ? CONFIG_IRQ_PINT3 : \
-                                 -1)
 #define bfin_write_TIMER_DISABLE(val)   bfin_write_TIMER_DISABLE0(val)
 #define bfin_write_TIMER_ENABLE(val)    bfin_write_TIMER_ENABLE0(val)
 #define bfin_write_TIMER_STATUS(val)    bfin_write_TIMER_STATUS0(val)
 #define bfin_read_TIMER_STATUS(val)     bfin_read_TIMER_STATUS0(val)
-#else
-# error "no PRIO_GPIODEMUX() for this part"
 #endif
 
 #define __ipipe_root_tick_p(regs)       ((regs->ipend & 0x10) != 0)
@@ -275,4 +245,6 @@ int ipipe_start_irq_thread(unsigned irq, struct irq_desc *desc);
 
 #endif /* !CONFIG_IPIPE */
 
+#define ipipe_update_tick_evtdev(evtdev)        do { } while (0)
+
 #endif  /* !__ASM_BLACKFIN_IPIPE_H */
diff --git a/arch/blackfin/include/asm/ipipe_base.h b/arch/blackfin/include/asm/ipipe_base.h
index cb1025aeabcf..3e8acbd1a3be 100644
--- a/arch/blackfin/include/asm/ipipe_base.h
+++ b/arch/blackfin/include/asm/ipipe_base.h
@@ -1,5 +1,5 @@
 /*   -*- linux-c -*-
- *   include/asm-blackfin/_baseipipe.h
+ *   include/asm-blackfin/ipipe_base.h
  *
  *   Copyright (C) 2007 Philippe Gerum.
  *
@@ -27,8 +27,9 @@
 #define IPIPE_NR_XIRQS          NR_IRQS
 #define IPIPE_IRQ_ISHIFT        5       /* 2^5 for 32bits arch. */
 
-/* Blackfin-specific, global domain flags */
-#define IPIPE_ROOTLOCK_FLAG     1       /* Lock pipeline for root */
+/* Blackfin-specific, per-cpu pipeline status */
+#define IPIPE_SYNCDEFER_FLAG    15
+#define IPIPE_SYNCDEFER_MASK    (1L << IPIPE_SYNCDEFER_MASK)
 
  /* Blackfin traps -- i.e. exception vector numbers */
 #define IPIPE_NR_FAULTS         52 /* We leave a gap after VEC_ILL_RES. */
@@ -48,11 +49,6 @@
 
 #ifndef __ASSEMBLY__
 
-#include <linux/bitops.h>
-
-extern int test_bit(int nr, const void *addr);
-
-
 extern unsigned long __ipipe_root_status; /* Alias to ipipe_root_cpudom_var(status) */
 
 static inline void __ipipe_stall_root(void)
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index 3d977909ce7d..7645e85a5f6f 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -61,20 +61,38 @@ void __ipipe_restore_root(unsigned long flags);
 #define raw_irqs_disabled_flags(flags)  (!irqs_enabled_from_flags_hw(flags))
 #define local_test_iflag_hw(x)          irqs_enabled_from_flags_hw(x)
 
-#define local_save_flags(x)                                             \
-        do {                                                            \
-                (x) = __ipipe_test_root() ? \
+#define local_save_flags(x)                                      \
+        do {                                                     \
+                (x) = __ipipe_test_root() ?                      \
                         __all_masked_irq_flags : bfin_irq_flags; \
+                barrier();                                       \
         } while (0)
 
-#define local_irq_save(x)                               \
-        do {                                            \
-                (x) = __ipipe_test_and_stall_root();    \
+#define local_irq_save(x)                                        \
+        do {                                                     \
+                (x) = __ipipe_test_and_stall_root() ?            \
+                        __all_masked_irq_flags : bfin_irq_flags; \
+                barrier();                                       \
+        } while (0)
+
+static inline void local_irq_restore(unsigned long x)
+{
+        barrier();
+        __ipipe_restore_root(x == __all_masked_irq_flags);
+}
+
+#define local_irq_disable()                     \
+        do {                                    \
+                __ipipe_stall_root();           \
+                barrier();                      \
         } while (0)
 
-#define local_irq_restore(x)    __ipipe_restore_root(x)
-#define local_irq_disable()     __ipipe_stall_root()
-#define local_irq_enable()      __ipipe_unstall_root()
+static inline void local_irq_enable(void)
+{
+        barrier();
+        __ipipe_unstall_root();
+}
+
 #define irqs_disabled()         __ipipe_test_root()
 
 #define local_save_flags_hw(x) \
diff --git a/arch/blackfin/include/asm/thread_info.h b/arch/blackfin/include/asm/thread_info.h
index e721ce55956c..2920087516f2 100644
--- a/arch/blackfin/include/asm/thread_info.h
+++ b/arch/blackfin/include/asm/thread_info.h
@@ -122,6 +122,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_MEMDIE              4
 #define TIF_RESTORE_SIGMASK     5       /* restore signal mask in do_signal() */
 #define TIF_FREEZE              6       /* is freezing for suspend */
+#define TIF_IRQ_SYNC            7       /* sync pipeline stage */
 
 /* as above, but as bit values */
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
@@ -130,6 +131,7 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
 #define _TIF_RESTORE_SIGMASK    (1<<TIF_RESTORE_SIGMASK)
 #define _TIF_FREEZE             (1<<TIF_FREEZE)
+#define _TIF_IRQ_SYNC           (1<<TIF_IRQ_SYNC)
 
 #define _TIF_WORK_MASK          0x0000FFFE      /* work to do on interrupt/exception return */