xtensa: clean up WSR*/RSR*/get_sr/set_sr

WSR and RSR are too generic and collide with other macro definitions in
the kernel causing warnings in allmodconfig builds. Drop WSR and RSR
macros and WSR_* and RSR_* variants. Change get_sr and set_sr to
xtensa_get_sr and xtensa_set_sr. Fix up users.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/include/asm/coprocessor.h

@@ -12,7 +12,6 @@
 #ifndef _XTENSA_COPROCESSOR_H
 #define _XTENSA_COPROCESSOR_H
 
-#include <linux/stringify.h>
 #include <variant/core.h>
 #include <variant/tie.h>
 #include <asm/types.h>
@@ -90,19 +89,6 @@
 
 #ifndef __ASSEMBLY__
 
-
-#if XCHAL_HAVE_CP
-
-#define RSR_CPENABLE(x)	do {						  \
-	__asm__ __volatile__("rsr %0, cpenable" : "=a" (x));		  \
-	} while(0);
-#define WSR_CPENABLE(x)	do {						  \
-	__asm__ __volatile__("wsr %0, cpenable; rsync" :: "a" (x));	  \
-	} while(0);
-
-#endif /* XCHAL_HAVE_CP */
-
-
 /*
  * Additional registers.
  * We define three types of additional registers:
@@ -162,12 +148,6 @@ extern void coprocessor_flush(struct thread_info*, int);
 extern void coprocessor_release_all(struct thread_info*);
 extern void coprocessor_flush_all(struct thread_info*);
 
-static inline void coprocessor_clear_cpenable(void)
-{
-	unsigned long i = 0;
-	WSR_CPENABLE(i);
-}
-
 #endif	/* XTENSA_HAVE_COPROCESSORS */
 
 #endif	/* !__ASSEMBLY__ */

arch/xtensa/include/asm/irqflags.h

@@ -12,6 +12,7 @@
 #ifndef _XTENSA_IRQFLAGS_H
 #define _XTENSA_IRQFLAGS_H
 
+#include <linux/stringify.h>
 #include <linux/types.h>
 #include <asm/processor.h>
 

arch/xtensa/include/asm/processor.h

@@ -13,6 +13,7 @@
 #include <variant/core.h>
 
 #include <linux/compiler.h>
+#include <linux/stringify.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>
 #include <asm/regs.h>
@@ -212,11 +213,18 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 /* Special register access. */
 
-#define WSR(v,sr) __asm__ __volatile__ ("wsr %0,"__stringify(sr) :: "a"(v));
-#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
-
-#define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);})
-#define get_sr(sr) ({unsigned int v; RSR(v,sr); v; })
+#define xtensa_set_sr(x, sr) \
+	({ \
+	 unsigned int v = (unsigned int)(x); \
+	 __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: "a"(v)); \
+	 })
+
+#define xtensa_get_sr(sr) \
+	({ \
+	 unsigned int v; \
+	 __asm__ __volatile__ ("rsr %0, "__stringify(sr) : "=a"(v)); \
+	 v; \
+	 })
 
 #ifndef XCHAL_HAVE_EXTERN_REGS
 #define XCHAL_HAVE_EXTERN_REGS 0

arch/xtensa/include/asm/thread_info.h

@@ -11,6 +11,7 @@
 #ifndef _XTENSA_THREAD_INFO_H
 #define _XTENSA_THREAD_INFO_H
 
+#include <linux/stringify.h>
 #include <asm/kmem_layout.h>
 
 #define CURRENT_SHIFT KERNEL_STACK_SHIFT

arch/xtensa/include/asm/timex.h

@@ -10,7 +10,6 @@
 #define _XTENSA_TIMEX_H
 
 #include <asm/processor.h>
-#include <linux/stringify.h>
 
 #if XCHAL_NUM_TIMERS > 0 && \
 	XTENSA_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
@@ -40,33 +39,24 @@ void local_timer_setup(unsigned cpu);
  * Register access.
  */
 
-#define WSR_CCOUNT(r)	  asm volatile ("wsr %0, ccount" :: "a" (r))
-#define RSR_CCOUNT(r)	  asm volatile ("rsr %0, ccount" : "=a" (r))
-#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(SREG_CCOMPARE)"+"__stringify(x) :: "a"(r))
-#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(SREG_CCOMPARE)"+"__stringify(x) : "=a"(r))
-
 static inline unsigned long get_ccount (void)
 {
-	unsigned long ccount;
-	RSR_CCOUNT(ccount);
-	return ccount;
+	return xtensa_get_sr(ccount);
 }
 
 static inline void set_ccount (unsigned long ccount)
 {
-	WSR_CCOUNT(ccount);
+	xtensa_set_sr(ccount, ccount);
 }
 
 static inline unsigned long get_linux_timer (void)
 {
-	unsigned ccompare;
-	RSR_CCOMPARE(LINUX_TIMER, ccompare);
-	return ccompare;
+	return xtensa_get_sr(SREG_CCOMPARE + LINUX_TIMER);
 }
 
 static inline void set_linux_timer (unsigned long ccompare)
 {
-	WSR_CCOMPARE(LINUX_TIMER, ccompare);
+	xtensa_set_sr(ccompare, SREG_CCOMPARE + LINUX_TIMER);
 }
 
 #endif	/* _XTENSA_TIMEX_H */

arch/xtensa/kernel/hw_breakpoint.c

@@ -101,30 +101,30 @@ static void xtensa_wsr(unsigned long v, u8 sr)
 	switch (sr) {
 #if XCHAL_NUM_IBREAK > 0
 	case SREG_IBREAKA + 0:
-		WSR(v, SREG_IBREAKA + 0);
+		xtensa_set_sr(v, SREG_IBREAKA + 0);
 		break;
 #endif
 #if XCHAL_NUM_IBREAK > 1
 	case SREG_IBREAKA + 1:
-		WSR(v, SREG_IBREAKA + 1);
+		xtensa_set_sr(v, SREG_IBREAKA + 1);
 		break;
 #endif
 
 #if XCHAL_NUM_DBREAK > 0
 	case SREG_DBREAKA + 0:
-		WSR(v, SREG_DBREAKA + 0);
+		xtensa_set_sr(v, SREG_DBREAKA + 0);
 		break;
 	case SREG_DBREAKC + 0:
-		WSR(v, SREG_DBREAKC + 0);
+		xtensa_set_sr(v, SREG_DBREAKC + 0);
 		break;
 #endif
 #if XCHAL_NUM_DBREAK > 1
 	case SREG_DBREAKA + 1:
-		WSR(v, SREG_DBREAKA + 1);
+		xtensa_set_sr(v, SREG_DBREAKA + 1);
 		break;
 
 	case SREG_DBREAKC + 1:
-		WSR(v, SREG_DBREAKC + 1);
+		xtensa_set_sr(v, SREG_DBREAKC + 1);
 		break;
 #endif
 	}
@@ -150,8 +150,8 @@ static void set_ibreak_regs(int reg, struct perf_event *bp)
 	unsigned long ibreakenable;
 
 	xtensa_wsr(info->address, SREG_IBREAKA + reg);
-	RSR(ibreakenable, SREG_IBREAKENABLE);
-	WSR(ibreakenable | (1 << reg), SREG_IBREAKENABLE);
+	ibreakenable = xtensa_get_sr(SREG_IBREAKENABLE);
+	xtensa_set_sr(ibreakenable | (1 << reg), SREG_IBREAKENABLE);
 }
 
 static void set_dbreak_regs(int reg, struct perf_event *bp)
@@ -214,8 +214,9 @@ void arch_uninstall_hw_breakpoint(struct perf_event *bp)
 		/* Breakpoint */
 		i = free_slot(this_cpu_ptr(bp_on_reg), XCHAL_NUM_IBREAK, bp);
 		if (i >= 0) {
-			RSR(ibreakenable, SREG_IBREAKENABLE);
-			WSR(ibreakenable & ~(1 << i), SREG_IBREAKENABLE);
+			ibreakenable = xtensa_get_sr(SREG_IBREAKENABLE);
+			xtensa_set_sr(ibreakenable & ~(1 << i),
+				      SREG_IBREAKENABLE);
 		}
 	} else {
 		/* Watchpoint */

arch/xtensa/kernel/process.c

@@ -87,7 +87,7 @@ void coprocessor_release_all(struct thread_info *ti)
 	}
 
 	ti->cpenable = cpenable;
-	coprocessor_clear_cpenable();
+	xtensa_set_sr(0, cpenable);
 
 	preempt_enable();
 }
@@ -99,16 +99,16 @@ void coprocessor_flush_all(struct thread_info *ti)
 
 	preempt_disable();
 
-	RSR_CPENABLE(old_cpenable);
+	old_cpenable = xtensa_get_sr(cpenable);
 	cpenable = ti->cpenable;
-	WSR_CPENABLE(cpenable);
+	xtensa_set_sr(cpenable, cpenable);
 
 	for (i = 0; i < XCHAL_CP_MAX; i++) {
 		if ((cpenable & 1) != 0 && coprocessor_owner[i] == ti)
 			coprocessor_flush(ti, i);
 		cpenable >>= 1;
 	}
-	WSR_CPENABLE(old_cpenable);
+	xtensa_set_sr(old_cpenable, cpenable);
 
 	preempt_enable();
 }

arch/xtensa/kernel/setup.c

@@ -318,9 +318,9 @@ static inline int mem_reserve(unsigned long start, unsigned long end)
 void __init setup_arch(char **cmdline_p)
 {
 	pr_info("config ID: %08x:%08x\n",
-		get_sr(SREG_EPC), get_sr(SREG_EXCSAVE));
-	if (get_sr(SREG_EPC) != XCHAL_HW_CONFIGID0 ||
-	    get_sr(SREG_EXCSAVE) != XCHAL_HW_CONFIGID1)
+		xtensa_get_sr(SREG_EPC), xtensa_get_sr(SREG_EXCSAVE));
+	if (xtensa_get_sr(SREG_EPC) != XCHAL_HW_CONFIGID0 ||
+	    xtensa_get_sr(SREG_EXCSAVE) != XCHAL_HW_CONFIGID1)
 		pr_info("built for config ID: %08x:%08x\n",
 			XCHAL_HW_CONFIGID0, XCHAL_HW_CONFIGID1);
 
@@ -596,7 +596,7 @@ c_show(struct seq_file *f, void *slot)
 		      num_online_cpus(),
 		      cpumask_pr_args(cpu_online_mask),
 		      XCHAL_BUILD_UNIQUE_ID,
-		      get_sr(SREG_EPC), get_sr(SREG_EXCSAVE),
+		      xtensa_get_sr(SREG_EPC), xtensa_get_sr(SREG_EXCSAVE),
 		      XCHAL_HAVE_BE ?  "big" : "little",
 		      ccount_freq/1000000,
 		      (ccount_freq/10000) % 100,

arch/xtensa/kernel/traps.c

@@ -213,8 +213,8 @@ extern void do_IRQ(int, struct pt_regs *);
 
 static inline void check_valid_nmi(void)
 {
-	unsigned intread = get_sr(interrupt);
-	unsigned intenable = get_sr(intenable);
+	unsigned intread = xtensa_get_sr(interrupt);
+	unsigned intenable = xtensa_get_sr(intenable);
 
 	BUG_ON(intread & intenable &
 	       ~(XTENSA_INTLEVEL_ANDBELOW_MASK(PROFILING_INTLEVEL) ^
@@ -271,8 +271,8 @@ void do_interrupt(struct pt_regs *regs)
 	irq_enter();
 
 	for (;;) {
-		unsigned intread = get_sr(interrupt);
-		unsigned intenable = get_sr(intenable);
+		unsigned intread = xtensa_get_sr(interrupt);
+		unsigned intenable = xtensa_get_sr(intenable);
 		unsigned int_at_level = intread & intenable;
 		unsigned level;
 

drivers/irqchip/irq-xtensa-mx.c

@@ -62,7 +62,7 @@ void secondary_init_irq(void)
 	__this_cpu_write(cached_irq_mask,
 			XCHAL_INTTYPE_MASK_EXTERN_EDGE |
 			XCHAL_INTTYPE_MASK_EXTERN_LEVEL);
-	set_sr(XCHAL_INTTYPE_MASK_EXTERN_EDGE |
+	xtensa_set_sr(XCHAL_INTTYPE_MASK_EXTERN_EDGE |
 			XCHAL_INTTYPE_MASK_EXTERN_LEVEL, intenable);
 }
 
@@ -77,7 +77,7 @@ static void xtensa_mx_irq_mask(struct irq_data *d)
 	} else {
 		mask = __this_cpu_read(cached_irq_mask) & ~mask;
 		__this_cpu_write(cached_irq_mask, mask);
-		set_sr(mask, intenable);
+		xtensa_set_sr(mask, intenable);
 	}
 }
 
@@ -92,7 +92,7 @@ static void xtensa_mx_irq_unmask(struct irq_data *d)
 	} else {
 		mask |= __this_cpu_read(cached_irq_mask);
 		__this_cpu_write(cached_irq_mask, mask);
-		set_sr(mask, intenable);
+		xtensa_set_sr(mask, intenable);
 	}
 }
 
@@ -108,12 +108,12 @@ static void xtensa_mx_irq_disable(struct irq_data *d)
 
 static void xtensa_mx_irq_ack(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intclear);
+	xtensa_set_sr(1 << d->hwirq, intclear);
 }
 
 static int xtensa_mx_irq_retrigger(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intset);
+	xtensa_set_sr(1 << d->hwirq, intset);
 	return 1;
 }
 

drivers/irqchip/irq-xtensa-pic.c

@@ -44,13 +44,13 @@ static const struct irq_domain_ops xtensa_irq_domain_ops = {
 static void xtensa_irq_mask(struct irq_data *d)
 {
 	cached_irq_mask &= ~(1 << d->hwirq);
-	set_sr(cached_irq_mask, intenable);
+	xtensa_set_sr(cached_irq_mask, intenable);
 }
 
 static void xtensa_irq_unmask(struct irq_data *d)
 {
 	cached_irq_mask |= 1 << d->hwirq;
-	set_sr(cached_irq_mask, intenable);
+	xtensa_set_sr(cached_irq_mask, intenable);
 }
 
 static void xtensa_irq_enable(struct irq_data *d)
@@ -65,12 +65,12 @@ static void xtensa_irq_disable(struct irq_data *d)
 
 static void xtensa_irq_ack(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intclear);
+	xtensa_set_sr(1 << d->hwirq, intclear);
 }
 
 static int xtensa_irq_retrigger(struct irq_data *d)
 {
-	set_sr(1 << d->hwirq, intset);
+	xtensa_set_sr(1 << d->hwirq, intset);
 	return 1;
 }