Merge tag 'asm-generic-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "The asm-generic tree contains three separate changes for linux-5.19:

   - The h8300 architecture is retired after it has been effectively
     unmaintained for a number of years. This is the last architecture
     we supported that has no MMU implementation, but there are still a
     few architectures (arm, m68k, riscv, sh and xtensa) that support
     CPUs with and without an MMU.

   - A series to add a generic ticket spinlock that can be shared by
     most architectures with a working cmpxchg or ll/sc type atomic,
     including the conversion of riscv, csky and openrisc. This series
     is also a prerequisite for the loongarch64 architecture port that
     will come as a separate pull request.

   - A cleanup of some exported uapi header files to ensure they can be
     included from user space without relying on other kernel headers"

* tag 'asm-generic-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  h8300: remove stale bindings and symlink
  sparc: add asm/stat.h to UAPI compile-test coverage
  powerpc: add asm/stat.h to UAPI compile-test coverage
  mips: add asm/stat.h to UAPI compile-test coverage
  riscv: add linux/bpf_perf_event.h to UAPI compile-test coverage
  kbuild: prevent exported headers from including <stdlib.h>, <stdbool.h>
  agpgart.h: do not include <stdlib.h> from exported header
  csky: Move to generic ticket-spinlock
  RISC-V: Move to queued RW locks
  RISC-V: Move to generic spinlocks
  openrisc: Move to ticket-spinlock
  asm-generic: qrwlock: Document the spinlock fairness requirements
  asm-generic: qspinlock: Indicate the use of mixed-size atomics
  asm-generic: ticket-lock: New generic ticket-based spinlock
  remove the h8300 architecture

1 files changed, 0 insertions, 192 deletions

diff --git a/drivers/clocksource/h8300_timer16.c b/drivers/clocksource/h8300_timer16.c
deleted file mode 100644
index 86ca91451b2e..000000000000
--- a/drivers/clocksource/h8300_timer16.c
+++ /dev/null
@@ -1,192 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  H8/300 16bit Timer driver
- *
- *  Copyright 2015 Yoshinori Sato <ysato@users.sourcefoge.jp>
- */
-
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/clocksource.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-
-#define TSTR	0
-#define TISRC	6
-
-#define TCR	0
-#define TCNT	2
-
-#define bset(b, a) iowrite8(ioread8(a) | (1 << (b)), (a))
-#define bclr(b, a) iowrite8(ioread8(a) & ~(1 << (b)), (a))
-
-struct timer16_priv {
-	struct clocksource cs;
-	unsigned long total_cycles;
-	void __iomem *mapbase;
-	void __iomem *mapcommon;
-	unsigned short cs_enabled;
-	unsigned char enb;
-	unsigned char ovf;
-	unsigned char ovie;
-};
-
-static unsigned long timer16_get_counter(struct timer16_priv *p)
-{
-	unsigned short v1, v2, v3;
-	unsigned char  o1, o2;
-
-	o1 = ioread8(p->mapcommon + TISRC) & p->ovf;
-
-	/* Make sure the timer value is stable. Stolen from acpi_pm.c */
-	do {
-		o2 = o1;
-		v1 = ioread16be(p->mapbase + TCNT);
-		v2 = ioread16be(p->mapbase + TCNT);
-		v3 = ioread16be(p->mapbase + TCNT);
-		o1 = ioread8(p->mapcommon + TISRC) & p->ovf;
-	} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
-			  || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
-
-	if (likely(!o1))
-		return v2;
-	else
-		return v2 + 0x10000;
-}
-
-
-static irqreturn_t timer16_interrupt(int irq, void *dev_id)
-{
-	struct timer16_priv *p = (struct timer16_priv *)dev_id;
-
-	bclr(p->ovf, p->mapcommon + TISRC);
-	p->total_cycles += 0x10000;
-
-	return IRQ_HANDLED;
-}
-
-static inline struct timer16_priv *cs_to_priv(struct clocksource *cs)
-{
-	return container_of(cs, struct timer16_priv, cs);
-}
-
-static u64 timer16_clocksource_read(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-	unsigned long raw, value;
-
-	value = p->total_cycles;
-	raw = timer16_get_counter(p);
-
-	return value + raw;
-}
-
-static int timer16_enable(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-
-	WARN_ON(p->cs_enabled);
-
-	p->total_cycles = 0;
-	iowrite16be(0x0000, p->mapbase + TCNT);
-	iowrite8(0x83, p->mapbase + TCR);
-	bset(p->ovie, p->mapcommon + TISRC);
-	bset(p->enb, p->mapcommon + TSTR);
-
-	p->cs_enabled = true;
-	return 0;
-}
-
-static void timer16_disable(struct clocksource *cs)
-{
-	struct timer16_priv *p = cs_to_priv(cs);
-
-	WARN_ON(!p->cs_enabled);
-
-	bclr(p->ovie, p->mapcommon + TISRC);
-	bclr(p->enb, p->mapcommon + TSTR);
-
-	p->cs_enabled = false;
-}
-
-static struct timer16_priv timer16_priv = {
-	.cs = {
-		.name = "h8300_16timer",
-		.rating = 200,
-		.read = timer16_clocksource_read,
-		.enable = timer16_enable,
-		.disable = timer16_disable,
-		.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8),
-		.flags = CLOCK_SOURCE_IS_CONTINUOUS,
-	},
-};
-
-#define REG_CH   0
-#define REG_COMM 1
-
-static int __init h8300_16timer_init(struct device_node *node)
-{
-	void __iomem *base[2];
-	int ret, irq;
-	unsigned int ch;
-	struct clk *clk;
-
-	clk = of_clk_get(node, 0);
-	if (IS_ERR(clk)) {
-		pr_err("failed to get clock for clocksource\n");
-		return PTR_ERR(clk);
-	}
-
-	ret = -ENXIO;
-	base[REG_CH] = of_iomap(node, 0);
-	if (!base[REG_CH]) {
-		pr_err("failed to map registers for clocksource\n");
-		goto free_clk;
-	}
-
-	base[REG_COMM] = of_iomap(node, 1);
-	if (!base[REG_COMM]) {
-		pr_err("failed to map registers for clocksource\n");
-		goto unmap_ch;
-	}
-
-	ret = -EINVAL;
-	irq = irq_of_parse_and_map(node, 0);
-	if (!irq) {
-		pr_err("failed to get irq for clockevent\n");
-		goto unmap_comm;
-	}
-
-	of_property_read_u32(node, "renesas,channel", &ch);
-
-	timer16_priv.mapbase = base[REG_CH];
-	timer16_priv.mapcommon = base[REG_COMM];
-	timer16_priv.enb = ch;
-	timer16_priv.ovf = ch;
-	timer16_priv.ovie = 4 + ch;
-
-	ret = request_irq(irq, timer16_interrupt,
-			  IRQF_TIMER, timer16_priv.cs.name, &timer16_priv);
-	if (ret < 0) {
-		pr_err("failed to request irq %d of clocksource\n", irq);
-		goto unmap_comm;
-	}
-
-	clocksource_register_hz(&timer16_priv.cs,
-				clk_get_rate(clk) / 8);
-	return 0;
-
-unmap_comm:
-	iounmap(base[REG_COMM]);
-unmap_ch:
-	iounmap(base[REG_CH]);
-free_clk:
-	clk_put(clk);
-	return ret;
-}
-
-TIMER_OF_DECLARE(h8300_16bit, "renesas,16bit-timer",
-			   h8300_16timer_init);