Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 330 insertions, 0 deletions

diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
new file mode 100644
index 000000000..8e3eab34d
--- /dev/null
+++ b/arch/x86/boot/boot.h
@@ -0,0 +1,330 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* -*- linux-c -*- ------------------------------------------------------- *
+ *
+ *   Copyright (C) 1991, 1992 Linus Torvalds
+ *   Copyright 2007 rPath, Inc. - All Rights Reserved
+ *   Copyright 2009 Intel Corporation; author H. Peter Anvin
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * Header file for the real-mode kernel code
+ */
+
+#ifndef BOOT_BOOT_H
+#define BOOT_BOOT_H
+
+#define STACK_SIZE	1024	/* Minimum number of bytes for stack */
+
+#ifndef __ASSEMBLER__
+
+#include <linux/stdarg.h>
+#include <linux/types.h>
+#include <linux/edd.h>
+#include <asm/setup.h>
+#include <asm/asm.h>
+#include "bitops.h"
+#include "ctype.h"
+#include "cpuflags.h"
+#include "io.h"
+
+/* Useful macros */
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+
+extern struct setup_header hdr;
+extern struct boot_params boot_params;
+
+#define cpu_relax()	asm volatile("pause")
+
+static inline void io_delay(void)
+{
+	const u16 DELAY_PORT = 0x80;
+	outb(0, DELAY_PORT);
+}
+
+/* These functions are used to reference data in other segments. */
+
+static inline u16 ds(void)
+{
+	u16 seg;
+	asm("movw %%ds,%0" : "=rm" (seg));
+	return seg;
+}
+
+static inline void set_fs(u16 seg)
+{
+	asm volatile("movw %0,%%fs" : : "rm" (seg));
+}
+static inline u16 fs(void)
+{
+	u16 seg;
+	asm volatile("movw %%fs,%0" : "=rm" (seg));
+	return seg;
+}
+
+static inline void set_gs(u16 seg)
+{
+	asm volatile("movw %0,%%gs" : : "rm" (seg));
+}
+static inline u16 gs(void)
+{
+	u16 seg;
+	asm volatile("movw %%gs,%0" : "=rm" (seg));
+	return seg;
+}
+
+typedef unsigned int addr_t;
+
+static inline u8 rdfs8(addr_t addr)
+{
+	u8 *ptr = (u8 *)absolute_pointer(addr);
+	u8 v;
+	asm volatile("movb %%fs:%1,%0" : "=q" (v) : "m" (*ptr));
+	return v;
+}
+static inline u16 rdfs16(addr_t addr)
+{
+	u16 *ptr = (u16 *)absolute_pointer(addr);
+	u16 v;
+	asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*ptr));
+	return v;
+}
+static inline u32 rdfs32(addr_t addr)
+{
+	u32 *ptr = (u32 *)absolute_pointer(addr);
+	u32 v;
+	asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*ptr));
+	return v;
+}
+
+static inline void wrfs8(u8 v, addr_t addr)
+{
+	u8 *ptr = (u8 *)absolute_pointer(addr);
+	asm volatile("movb %1,%%fs:%0" : "+m" (*ptr) : "qi" (v));
+}
+static inline void wrfs16(u16 v, addr_t addr)
+{
+	u16 *ptr = (u16 *)absolute_pointer(addr);
+	asm volatile("movw %1,%%fs:%0" : "+m" (*ptr) : "ri" (v));
+}
+static inline void wrfs32(u32 v, addr_t addr)
+{
+	u32 *ptr = (u32 *)absolute_pointer(addr);
+	asm volatile("movl %1,%%fs:%0" : "+m" (*ptr) : "ri" (v));
+}
+
+static inline u8 rdgs8(addr_t addr)
+{
+	u8 *ptr = (u8 *)absolute_pointer(addr);
+	u8 v;
+	asm volatile("movb %%gs:%1,%0" : "=q" (v) : "m" (*ptr));
+	return v;
+}
+static inline u16 rdgs16(addr_t addr)
+{
+	u16 *ptr = (u16 *)absolute_pointer(addr);
+	u16 v;
+	asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*ptr));
+	return v;
+}
+static inline u32 rdgs32(addr_t addr)
+{
+	u32 *ptr = (u32 *)absolute_pointer(addr);
+	u32 v;
+	asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*ptr));
+	return v;
+}
+
+static inline void wrgs8(u8 v, addr_t addr)
+{
+	u8 *ptr = (u8 *)absolute_pointer(addr);
+	asm volatile("movb %1,%%gs:%0" : "+m" (*ptr) : "qi" (v));
+}
+static inline void wrgs16(u16 v, addr_t addr)
+{
+	u16 *ptr = (u16 *)absolute_pointer(addr);
+	asm volatile("movw %1,%%gs:%0" : "+m" (*ptr) : "ri" (v));
+}
+static inline void wrgs32(u32 v, addr_t addr)
+{
+	u32 *ptr = (u32 *)absolute_pointer(addr);
+	asm volatile("movl %1,%%gs:%0" : "+m" (*ptr) : "ri" (v));
+}
+
+/* Note: these only return true/false, not a signed return value! */
+static inline bool memcmp_fs(const void *s1, addr_t s2, size_t len)
+{
+	bool diff;
+	asm volatile("fs repe cmpsb"
+		     : "=@ccnz" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	return diff;
+}
+static inline bool memcmp_gs(const void *s1, addr_t s2, size_t len)
+{
+	bool diff;
+	asm volatile("gs repe cmpsb"
+		     : "=@ccnz" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	return diff;
+}
+
+/* Heap -- available for dynamic lists. */
+extern char _end[];
+extern char *HEAP;
+extern char *heap_end;
+#define RESET_HEAP() ((void *)( HEAP = _end ))
+static inline char *__get_heap(size_t s, size_t a, size_t n)
+{
+	char *tmp;
+
+	HEAP = (char *)(((size_t)HEAP+(a-1)) & ~(a-1));
+	tmp = HEAP;
+	HEAP += s*n;
+	return tmp;
+}
+#define GET_HEAP(type, n) \
+	((type *)__get_heap(sizeof(type),__alignof__(type),(n)))
+
+static inline bool heap_free(size_t n)
+{
+	return (int)(heap_end-HEAP) >= (int)n;
+}
+
+/* copy.S */
+
+void copy_to_fs(addr_t dst, void *src, size_t len);
+void *copy_from_fs(void *dst, addr_t src, size_t len);
+
+/* a20.c */
+int enable_a20(void);
+
+/* apm.c */
+int query_apm_bios(void);
+
+/* bioscall.c */
+struct biosregs {
+	union {
+		struct {
+			u32 edi;
+			u32 esi;
+			u32 ebp;
+			u32 _esp;
+			u32 ebx;
+			u32 edx;
+			u32 ecx;
+			u32 eax;
+			u32 _fsgs;
+			u32 _dses;
+			u32 eflags;
+		};
+		struct {
+			u16 di, hdi;
+			u16 si, hsi;
+			u16 bp, hbp;
+			u16 _sp, _hsp;
+			u16 bx, hbx;
+			u16 dx, hdx;
+			u16 cx, hcx;
+			u16 ax, hax;
+			u16 gs, fs;
+			u16 es, ds;
+			u16 flags, hflags;
+		};
+		struct {
+			u8 dil, dih, edi2, edi3;
+			u8 sil, sih, esi2, esi3;
+			u8 bpl, bph, ebp2, ebp3;
+			u8 _spl, _sph, _esp2, _esp3;
+			u8 bl, bh, ebx2, ebx3;
+			u8 dl, dh, edx2, edx3;
+			u8 cl, ch, ecx2, ecx3;
+			u8 al, ah, eax2, eax3;
+		};
+	};
+};
+void intcall(u8 int_no, const struct biosregs *ireg, struct biosregs *oreg);
+
+/* cmdline.c */
+int __cmdline_find_option(unsigned long cmdline_ptr, const char *option, char *buffer, int bufsize);
+int __cmdline_find_option_bool(unsigned long cmdline_ptr, const char *option);
+static inline int cmdline_find_option(const char *option, char *buffer, int bufsize)
+{
+	unsigned long cmd_line_ptr = boot_params.hdr.cmd_line_ptr;
+
+	if (cmd_line_ptr >= 0x100000)
+		return -1;      /* inaccessible */
+
+	return __cmdline_find_option(cmd_line_ptr, option, buffer, bufsize);
+}
+
+static inline int cmdline_find_option_bool(const char *option)
+{
+	unsigned long cmd_line_ptr = boot_params.hdr.cmd_line_ptr;
+
+	if (cmd_line_ptr >= 0x100000)
+		return -1;      /* inaccessible */
+
+	return __cmdline_find_option_bool(cmd_line_ptr, option);
+}
+
+/* cpu.c, cpucheck.c */
+int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr);
+int check_knl_erratum(void);
+int validate_cpu(void);
+
+/* early_serial_console.c */
+extern int early_serial_base;
+void console_init(void);
+
+/* edd.c */
+void query_edd(void);
+
+/* header.S */
+void __attribute__((noreturn)) die(void);
+
+/* memory.c */
+void detect_memory(void);
+
+/* pm.c */
+void __attribute__((noreturn)) go_to_protected_mode(void);
+
+/* pmjump.S */
+void __attribute__((noreturn))
+	protected_mode_jump(u32 entrypoint, u32 bootparams);
+
+/* printf.c */
+int sprintf(char *buf, const char *fmt, ...);
+int vsprintf(char *buf, const char *fmt, va_list args);
+int printf(const char *fmt, ...);
+
+/* regs.c */
+void initregs(struct biosregs *regs);
+
+/* string.c */
+int strcmp(const char *str1, const char *str2);
+int strncmp(const char *cs, const char *ct, size_t count);
+size_t strnlen(const char *s, size_t maxlen);
+unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base);
+size_t strlen(const char *s);
+char *strchr(const char *s, int c);
+
+/* tty.c */
+void puts(const char *);
+void putchar(int);
+int getchar(void);
+void kbd_flush(void);
+int getchar_timeout(void);
+
+/* video.c */
+void set_video(void);
+
+/* video-mode.c */
+int set_mode(u16 mode);
+int mode_defined(u16 mode);
+void probe_cards(int unsafe);
+
+/* video-vesa.c */
+void vesa_store_edid(void);
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* BOOT_BOOT_H */