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Message-ID: <20240722094226.21602-17-ysionneau@kalrayinc.com>
Date: Mon, 22 Jul 2024 11:41:27 +0200
From: ysionneau@...rayinc.com
To: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>, Waiman Long
<longman@...hat.com>, Boqun Feng <boqun.feng@...il.com>
Cc: Jonathan Borne <jborne@...rayinc.com>, Julian Vetter
<jvetter@...rayinc.com>, Yann Sionneau <ysionneau@...rayinc.com>, Clement
Leger <clement@...ment-leger.fr>, Vincent Chardon
<vincent.chardon@...ys-design.com>
Subject: [RFC PATCH v3 16/37] kvx: Add other common headers
From: Yann Sionneau <ysionneau@...rayinc.com>
Add some other common headers for basic kvx support.
Co-developed-by: Clement Leger <clement@...ment-leger.fr>
Signed-off-by: Clement Leger <clement@...ment-leger.fr>
Co-developed-by: Julian Vetter <jvetter@...rayinc.com>
Signed-off-by: Julian Vetter <jvetter@...rayinc.com>
Co-developed-by: Vincent Chardon <vincent.chardon@...ys-design.com>
Signed-off-by: Vincent Chardon <vincent.chardon@...ys-design.com>
Signed-off-by: Yann Sionneau <ysionneau@...rayinc.com>
---
Notes:
V2 -> V3: remove __rm_firmware_regs_start declaration.
---
arch/kvx/include/asm/asm-prototypes.h | 14 ++++++++
arch/kvx/include/asm/clocksource.h | 17 +++++++++
arch/kvx/include/asm/linkage.h | 13 +++++++
arch/kvx/include/asm/pci.h | 36 +++++++++++++++++++
arch/kvx/include/asm/sections.h | 17 +++++++++
arch/kvx/include/asm/spinlock.h | 16 +++++++++
arch/kvx/include/asm/spinlock_types.h | 17 +++++++++
arch/kvx/include/asm/stackprotector.h | 47 +++++++++++++++++++++++++
arch/kvx/include/asm/timex.h | 20 +++++++++++
arch/kvx/include/asm/types.h | 12 +++++++
arch/kvx/include/uapi/asm/bitsperlong.h | 14 ++++++++
arch/kvx/include/uapi/asm/byteorder.h | 12 +++++++
tools/include/uapi/asm/bitsperlong.h | 2 ++
13 files changed, 237 insertions(+)
create mode 100644 arch/kvx/include/asm/asm-prototypes.h
create mode 100644 arch/kvx/include/asm/clocksource.h
create mode 100644 arch/kvx/include/asm/linkage.h
create mode 100644 arch/kvx/include/asm/pci.h
create mode 100644 arch/kvx/include/asm/sections.h
create mode 100644 arch/kvx/include/asm/spinlock.h
create mode 100644 arch/kvx/include/asm/spinlock_types.h
create mode 100644 arch/kvx/include/asm/stackprotector.h
create mode 100644 arch/kvx/include/asm/timex.h
create mode 100644 arch/kvx/include/asm/types.h
create mode 100644 arch/kvx/include/uapi/asm/bitsperlong.h
create mode 100644 arch/kvx/include/uapi/asm/byteorder.h
diff --git a/arch/kvx/include/asm/asm-prototypes.h b/arch/kvx/include/asm/asm-prototypes.h
new file mode 100644
index 0000000000000..af032508e30cf
--- /dev/null
+++ b/arch/kvx/include/asm/asm-prototypes.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_ASM_PROTOTYPES_H
+#define _ASM_KVX_ASM_PROTOTYPES_H
+
+#include <asm/string.h>
+
+#include <asm-generic/asm-prototypes.h>
+
+#endif /* _ASM_KVX_ASM_PROTOTYPES_H */
diff --git a/arch/kvx/include/asm/clocksource.h b/arch/kvx/include/asm/clocksource.h
new file mode 100644
index 0000000000000..4df7c66ffbb53
--- /dev/null
+++ b/arch/kvx/include/asm/clocksource.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Yann Sionneau
+ * Clement Leger
+ */
+
+#ifndef _ASM_KVX_CLOCKSOURCE_H
+#define _ASM_KVX_CLOCKSOURCE_H
+
+#include <linux/compiler.h>
+
+struct arch_clocksource_data {
+ void __iomem *regs;
+};
+
+#endif /* _ASM_KVX_CLOCKSOURCE_H */
diff --git a/arch/kvx/include/asm/linkage.h b/arch/kvx/include/asm/linkage.h
new file mode 100644
index 0000000000000..84e1cacf67c21
--- /dev/null
+++ b/arch/kvx/include/asm/linkage.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Yann Sionneau
+ */
+
+#ifndef __ASM_KVX_LINKAGE_H
+#define __ASM_KVX_LINKAGE_H
+
+#define __ALIGN .align 4
+#define __ALIGN_STR ".align 4"
+
+#endif
diff --git a/arch/kvx/include/asm/pci.h b/arch/kvx/include/asm/pci.h
new file mode 100644
index 0000000000000..d5bbaaf041b53
--- /dev/null
+++ b/arch/kvx/include/asm/pci.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Vincent Chardon
+ * Clement Leger
+ */
+
+#ifndef __ASM_KVX_PCI_H_
+#define __ASM_KVX_PCI_H_
+
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/of_gpio.h>
+
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
+#define HAVE_PCI_MMAP 1
+
+extern int isa_dma_bridge_buggy;
+
+/* Can be used to override the logic in pci_scan_bus for skipping
+ * already-configured bus numbers - to be used for buggy BIOSes
+ * or architectures with incomplete PCI setup by the loader.
+ */
+#define pcibios_assign_all_busses() 0
+
+#define PCIBIOS_MIN_IO 0UL
+#define PCIBIOS_MIN_MEM 0UL
+
+#ifdef CONFIG_PCI_DOMAINS
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ return pci_domain_nr(bus);
+}
+#endif /* CONFIG_PCI_DOMAINS */
+
+#endif /* _ASM_KVX_PCI_H */
diff --git a/arch/kvx/include/asm/sections.h b/arch/kvx/include/asm/sections.h
new file mode 100644
index 0000000000000..60e63fc530802
--- /dev/null
+++ b/arch/kvx/include/asm/sections.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_SECTIONS_H
+#define _ASM_KVX_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+extern char __rodata_start[], __rodata_end[];
+extern char __initdata_start[], __initdata_end[];
+extern char __inittext_start[], __inittext_end[];
+extern char __exception_start[], __exception_end[];
+
+#endif
diff --git a/arch/kvx/include/asm/spinlock.h b/arch/kvx/include/asm/spinlock.h
new file mode 100644
index 0000000000000..ed32fdba1e19d
--- /dev/null
+++ b/arch/kvx/include/asm/spinlock.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_SPINLOCK_H
+#define _ASM_KVX_SPINLOCK_H
+
+#include <asm/qspinlock.h>
+#include <asm/qrwlock.h>
+
+/* See include/linux/spinlock.h */
+#define smp_mb__after_spinlock() smp_mb()
+
+#endif
diff --git a/arch/kvx/include/asm/spinlock_types.h b/arch/kvx/include/asm/spinlock_types.h
new file mode 100644
index 0000000000000..929a7df16ef39
--- /dev/null
+++ b/arch/kvx/include/asm/spinlock_types.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_SPINLOCK_TYPES_H
+#define _ASM_KVX_SPINLOCK_TYPES_H
+
+#if !defined(__LINUX_SPINLOCK_TYPES_RAW_H) && !defined(__ASM_SPINLOCK_H)
+# error "please don't include this file directly"
+#endif
+
+#include <asm-generic/qspinlock_types.h>
+#include <asm-generic/qrwlock_types.h>
+
+#endif /* _ASM_KVX_SPINLOCK_TYPES_H */
diff --git a/arch/kvx/include/asm/stackprotector.h b/arch/kvx/include/asm/stackprotector.h
new file mode 100644
index 0000000000000..2c190bbb5efc8
--- /dev/null
+++ b/arch/kvx/include/asm/stackprotector.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * derived from arch/mips/include/asm/stackprotector.h
+ *
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+/*
+ * GCC stack protector support.
+ *
+ * Stack protector works by putting predefined pattern at the start of
+ * the stack frame and verifying that it hasn't been overwritten when
+ * returning from the function. The pattern is called stack canary
+ * and gcc expects it to be defined by a global variable called
+ * "__stack_chk_guard" on KVX. This unfortunately means that on SMP
+ * we cannot have a different canary value per task.
+ */
+
+#ifndef __ASM_STACKPROTECTOR_H
+#define __ASM_STACKPROTECTOR_H
+
+#include <linux/random.h>
+#include <linux/version.h>
+
+extern unsigned long __stack_chk_guard;
+
+/*
+ * Initialize the stackprotector canary value.
+ *
+ * NOTE: this must only be called from functions that never return,
+ * and it must always be inlined.
+ */
+static __always_inline void boot_init_stack_canary(void)
+{
+ unsigned long canary;
+
+ /* Try to get a semi random initial value. */
+ get_random_bytes(&canary, sizeof(canary));
+ canary ^= LINUX_VERSION_CODE;
+ canary &= CANARY_MASK;
+
+ current->stack_canary = canary;
+ __stack_chk_guard = current->stack_canary;
+}
+
+#endif /* _ASM_STACKPROTECTOR_H */
diff --git a/arch/kvx/include/asm/timex.h b/arch/kvx/include/asm/timex.h
new file mode 100644
index 0000000000000..51e346faa887f
--- /dev/null
+++ b/arch/kvx/include/asm/timex.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_TIMEX_H
+#define _ASM_KVX_TIMEX_H
+
+#define get_cycles get_cycles
+
+#include <asm/sfr.h>
+#include <asm-generic/timex.h>
+
+static inline cycles_t get_cycles(void)
+{
+ return kvx_sfr_get(PM0);
+}
+
+#endif /* _ASM_KVX_TIMEX_H */
diff --git a/arch/kvx/include/asm/types.h b/arch/kvx/include/asm/types.h
new file mode 100644
index 0000000000000..1e6c024ee8923
--- /dev/null
+++ b/arch/kvx/include/asm/types.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_TYPES_H
+#define _ASM_KVX_TYPES_H
+
+#include <asm-generic/int-ll64.h>
+
+#endif /* _ASM_KVX_TYPES_H */
diff --git a/arch/kvx/include/uapi/asm/bitsperlong.h b/arch/kvx/include/uapi/asm/bitsperlong.h
new file mode 100644
index 0000000000000..02a91596d5670
--- /dev/null
+++ b/arch/kvx/include/uapi/asm/bitsperlong.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _UAPI_ASM_KVX_BITSPERLONG_H
+#define _UAPI_ASM_KVX_BITSPERLONG_H
+
+#define __BITS_PER_LONG 64
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _UAPI_ASM_KVX_BITSPERLONG_H */
diff --git a/arch/kvx/include/uapi/asm/byteorder.h b/arch/kvx/include/uapi/asm/byteorder.h
new file mode 100644
index 0000000000000..b7d827daec737
--- /dev/null
+++ b/arch/kvx/include/uapi/asm/byteorder.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2017-2023 Kalray Inc.
+ * Author(s): Clement Leger
+ */
+
+#ifndef _ASM_KVX_BYTEORDER_H
+#define _ASM_KVX_BYTEORDER_H
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_KVX_BYTEORDER_H */
diff --git a/tools/include/uapi/asm/bitsperlong.h b/tools/include/uapi/asm/bitsperlong.h
index c65267afc3415..aada3dfc4d61f 100644
--- a/tools/include/uapi/asm/bitsperlong.h
+++ b/tools/include/uapi/asm/bitsperlong.h
@@ -13,6 +13,8 @@
#include "../../../arch/ia64/include/uapi/asm/bitsperlong.h"
#elif defined(__alpha__)
#include "../../../arch/alpha/include/uapi/asm/bitsperlong.h"
+#elif defined(__kvx__)
+#include "../../../arch/kvx/include/uapi/asm/bitsperlong.h"
#else
#include <asm-generic/bitsperlong.h>
#endif
--
2.45.2
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