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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/include/asm/mach-ip32
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/include/asm/mach-ip32')
-rw-r--r--arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h51
-rw-r--r--arch/mips/include/asm/mach-ip32/kmalloc.h12
-rw-r--r--arch/mips/include/asm/mach-ip32/mangle-port.h26
3 files changed, 89 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h
new file mode 100644
index 000000000..63b4c8890
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h
@@ -0,0 +1,51 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Ilya A. Volynets-Evenbakh
+ * Copyright (C) 2005, 07 Ralf Baechle (ralf@linux-mips.org)
+ */
+#ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
+
+
+/*
+ * R5000 has an interesting "restriction": ll(d)/sc(d)
+ * instructions to XKPHYS region simply do uncached bus
+ * requests. This breaks all the atomic bitops functions.
+ * so, for 64bit IP32 kernel we just don't use ll/sc.
+ * This does not affect luserland.
+ */
+#if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT)
+#define cpu_has_llsc 0
+#else
+#define cpu_has_llsc 1
+#endif
+
+/* Settings which are common for all ip32 CPUs */
+#define cpu_has_tlb 1
+#define cpu_has_4kex 1
+#define cpu_has_32fpr 1
+#define cpu_has_counter 1
+#define cpu_has_mips16 0
+#define cpu_has_mips16e2 0
+#define cpu_has_vce 0
+#define cpu_has_cache_cdex_s 0
+#define cpu_has_mcheck 0
+#define cpu_has_ejtag 0
+#define cpu_has_vtag_icache 0
+#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
+#define cpu_has_dsp2 0
+#define cpu_has_4k_cache 1
+#define cpu_has_mipsmt 0
+#define cpu_has_userlocal 0
+
+
+#define cpu_has_mips32r1 0
+#define cpu_has_mips32r2 0
+#define cpu_has_mips64r1 0
+#define cpu_has_mips64r2 0
+
+#endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */
diff --git a/arch/mips/include/asm/mach-ip32/kmalloc.h b/arch/mips/include/asm/mach-ip32/kmalloc.h
new file mode 100644
index 000000000..07a0146ea
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip32/kmalloc.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_MACH_IP32_KMALLOC_H
+#define __ASM_MACH_IP32_KMALLOC_H
+
+
+#if defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_RM7000)
+#define ARCH_DMA_MINALIGN 32
+#else
+#define ARCH_DMA_MINALIGN 128
+#endif
+
+#endif /* __ASM_MACH_IP32_KMALLOC_H */
diff --git a/arch/mips/include/asm/mach-ip32/mangle-port.h b/arch/mips/include/asm/mach-ip32/mangle-port.h
new file mode 100644
index 000000000..4bc3d20e8
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip32/mangle-port.h
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Ladislav Michl
+ * Copyright (C) 2004 Ralf Baechle
+ */
+#ifndef __ASM_MACH_IP32_MANGLE_PORT_H
+#define __ASM_MACH_IP32_MANGLE_PORT_H
+
+#define __swizzle_addr_b(port) ((port) ^ 3)
+#define __swizzle_addr_w(port) ((port) ^ 2)
+#define __swizzle_addr_l(port) (port)
+#define __swizzle_addr_q(port) (port)
+
+# define ioswabb(a, x) (x)
+# define __mem_ioswabb(a, x) (x)
+# define ioswabw(a, x) (x)
+# define __mem_ioswabw(a, x) ((__force u16)cpu_to_le16(x))
+# define ioswabl(a, x) (x)
+# define __mem_ioswabl(a, x) ((__force u32)cpu_to_le32(x))
+# define ioswabq(a, x) (x)
+# define __mem_ioswabq(a, x) ((__force u64)cpu_to_le64(x))
+
+#endif /* __ASM_MACH_IP32_MANGLE_PORT_H */