Support the MIPS32 / MIPS64 DSP ASE.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/abi.h b/include/asm-mips/abi.h
new file mode 100644
index 0000000..2e7e651
--- /dev/null
+++ b/include/asm-mips/abi.h
@@ -0,0 +1,25 @@
+/*
+ * 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 by Ralf Baechle
+ * Copyright (C) 2005 MIPS Technologies, Inc.
+ */
+#ifndef _ASM_ABI_H
+#define _ASM_ABI_H
+
+#include <asm/signal.h>
+#include <asm/siginfo.h>
+
+struct mips_abi {
+ int (* const do_signal)(sigset_t *oldset, struct pt_regs *regs);
+ int (* const setup_frame)(struct k_sigaction * ka,
+ struct pt_regs *regs, int signr,
+ sigset_t *set);
+ int (* const setup_rt_frame)(struct k_sigaction * ka,
+ struct pt_regs *regs, int signr,
+ sigset_t *set, siginfo_t *info);
+};
+
+#endif /* _ASM_ABI_H */
diff --git a/include/asm-mips/cpu-features.h b/include/asm-mips/cpu-features.h
index 012deda..4930824 100644
--- a/include/asm-mips/cpu-features.h
+++ b/include/asm-mips/cpu-features.h
@@ -105,6 +105,10 @@
#endif
#endif
+#ifndef cpu_has_dsp
+#define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
+#endif
+
/*
* Certain CPUs may throw bizarre exceptions if not the whole cacheline
* contains valid instructions. For these we ensure proper alignment of
diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h
index a4f85a2..2a109a5 100644
--- a/include/asm-mips/cpu.h
+++ b/include/asm-mips/cpu.h
@@ -77,6 +77,7 @@
#define PRID_IMP_4KEMPR2 0x9100
#define PRID_IMP_4KSD 0x9200
#define PRID_IMP_24K 0x9300
+#define PRID_IMP_24KE 0x9600
#define PRID_IMP_UNKNOWN 0xff00
@@ -232,5 +233,6 @@
#define MIPS_ASE_MDMX 0x00000002 /* MIPS digital media extension */
#define MIPS_ASE_MIPS3D 0x00000004 /* MIPS-3D */
#define MIPS_ASE_SMARTMIPS 0x00000008 /* SmartMIPS */
+#define MIPS_ASE_DSP 0x00000010 /* Signal Processing ASE */
#endif /* _ASM_CPU_H */
diff --git a/include/asm-mips/dsp.h b/include/asm-mips/dsp.h
new file mode 100644
index 0000000..50f556b
--- /dev/null
+++ b/include/asm-mips/dsp.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2005 Mips Technologies
+ * Author: Chris Dearman, chris@mips.com derived from fpu.h
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef _ASM_DSP_H
+#define _ASM_DSP_H
+
+#include <asm/cpu.h>
+#include <asm/cpu-features.h>
+#include <asm/hazards.h>
+#include <asm/mipsregs.h>
+
+#define DSP_DEFAULT 0x00000000
+#define DSP_MASK 0x1f
+
+#define __enable_dsp_hazard() \
+do { \
+ asm("_ehb"); \
+} while (0)
+
+static inline void __init_dsp(void)
+{
+ mthi1(0);
+ mtlo1(0);
+ mthi2(0);
+ mtlo2(0);
+ mthi3(0);
+ mtlo3(0);
+ wrdsp(DSP_DEFAULT, DSP_MASK);
+}
+
+static inline void init_dsp(void)
+{
+ if (cpu_has_dsp)
+ __init_dsp();
+}
+
+#define __save_dsp(tsk) \
+do { \
+ tsk->thread.dsp.dspr[0] = mfhi1(); \
+ tsk->thread.dsp.dspr[1] = mflo1(); \
+ tsk->thread.dsp.dspr[2] = mfhi2(); \
+ tsk->thread.dsp.dspr[3] = mflo2(); \
+ tsk->thread.dsp.dspr[4] = mfhi3(); \
+ tsk->thread.dsp.dspr[5] = mflo3(); \
+} while (0)
+
+#define save_dsp(tsk) \
+do { \
+ if (cpu_has_dsp) \
+ __save_dsp(tsk); \
+} while (0)
+
+#define __restore_dsp(tsk) \
+do { \
+ mthi1(tsk->thread.dsp.dspr[0]); \
+ mtlo1(tsk->thread.dsp.dspr[1]); \
+ mthi2(tsk->thread.dsp.dspr[2]); \
+ mtlo2(tsk->thread.dsp.dspr[3]); \
+ mthi3(tsk->thread.dsp.dspr[4]); \
+ mtlo3(tsk->thread.dsp.dspr[5]); \
+} while (0)
+
+#define restore_dsp(tsk) \
+do { \
+ if (cpu_has_dsp) \
+ __restore_dsp(tsk); \
+} while (0)
+
+#define __get_dsp_regs(tsk) \
+({ \
+ if (tsk == current) \
+ __save_dsp(current); \
+ \
+ tsk->thread.dsp.dspr; \
+})
+
+#endif /* _ASM_DSP_H */
diff --git a/include/asm-mips/elf.h b/include/asm-mips/elf.h
index bb031f3..a4db9ec 100644
--- a/include/asm-mips/elf.h
+++ b/include/asm-mips/elf.h
@@ -193,33 +193,76 @@
#ifdef __KERNEL__
+struct mips_abi;
+
+extern struct mips_abi mips_abi;
+extern struct mips_abi mips_abi_32;
+extern struct mips_abi mips_abi_n32;
+
#ifdef CONFIG_32BIT
-#define SET_PERSONALITY(ex, ibcs2) \
-do { \
- if (ibcs2) \
- set_personality(PER_SVR4); \
- set_personality(PER_LINUX); \
+#define SET_PERSONALITY(ex, ibcs2) \
+do { \
+ if (ibcs2) \
+ set_personality(PER_SVR4); \
+ set_personality(PER_LINUX); \
+ \
+ current->thread.abi = &mips_abi; \
} while (0)
#endif /* CONFIG_32BIT */
#ifdef CONFIG_64BIT
-#define SET_PERSONALITY(ex, ibcs2) \
-do { current->thread.mflags &= ~MF_ABI_MASK; \
- if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
- if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
- ((ex).e_flags & EF_MIPS_ABI) == 0) \
- current->thread.mflags |= MF_N32; \
- else \
- current->thread.mflags |= MF_O32; \
- } else \
- current->thread.mflags |= MF_N64; \
- if (ibcs2) \
- set_personality(PER_SVR4); \
- else if (current->personality != PER_LINUX32) \
- set_personality(PER_LINUX); \
+#ifdef CONFIG_MIPS32_N32
+#define __SET_PERSONALITY32_N32() \
+ do { \
+ current->thread.mflags |= MF_N32; \
+ current->thread.abi = &mips_abi_n32; \
+ } while (0)
+#else
+#define __SET_PERSONALITY32_N32() \
+ do { } while (0)
+#endif
+
+#ifdef CONFIG_MIPS32_O32
+#define __SET_PERSONALITY32_O32() \
+ do { \
+ current->thread.mflags |= MF_O32; \
+ current->thread.abi = &mips_abi_32; \
+ } while (0)
+#else
+#define __SET_PERSONALITY32_O32() \
+ do { } while (0)
+#endif
+
+#ifdef CONFIG_MIPS32_COMPAT
+#define __SET_PERSONALITY32(ex) \
+do { \
+ if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
+ ((ex).e_flags & EF_MIPS_ABI) == 0) \
+ __SET_PERSONALITY32_N32(); \
+ else \
+ __SET_PERSONALITY32_O32(); \
+} while (0)
+#else
+#define __SET_PERSONALITY32(ex) do { } while (0)
+#endif
+
+#define SET_PERSONALITY(ex, ibcs2) \
+do { \
+ current->thread.mflags &= ~MF_ABI_MASK; \
+ if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
+ __SET_PERSONALITY32(ex); \
+ else { \
+ current->thread.mflags |= MF_N64; \
+ current->thread.abi = &mips_abi; \
+ } \
+ \
+ if (ibcs2) \
+ set_personality(PER_SVR4); \
+ else if (current->personality != PER_LINUX32) \
+ set_personality(PER_LINUX); \
} while (0)
#endif /* CONFIG_64BIT */
diff --git a/include/asm-mips/inst.h b/include/asm-mips/inst.h
index df912c2..e0745f4 100644
--- a/include/asm-mips/inst.h
+++ b/include/asm-mips/inst.h
@@ -62,10 +62,10 @@
spimi_op, unused_rt_op_0x05, unused_rt_op_0x06, unused_rt_op_0x07,
tgei_op, tgeiu_op, tlti_op, tltiu_op,
teqi_op, unused_0x0d_rt_op, tnei_op, unused_0x0f_rt_op,
- bltzal_op, bgezal_op, bltzall_op, bgezall_op
- /*
- * The others (0x14 - 0x1f) are unused.
- */
+ bltzal_op, bgezal_op, bltzall_op, bgezall_op,
+ rt_op_0x14, rt_op_0x15, rt_op_0x16, rt_op_0x17,
+ rt_op_0x18, rt_op_0x19, rt_op_0x1a, rt_op_0x1b,
+ bposge32_op, rt_op_0x1d, rt_op_0x1e, rt_op_0x1f
};
/*
diff --git a/include/asm-mips/mach-ip22/cpu-feature-overrides.h b/include/asm-mips/mach-ip22/cpu-feature-overrides.h
index 3c8896d..a115940 100644
--- a/include/asm-mips/mach-ip22/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ip22/cpu-feature-overrides.h
@@ -23,6 +23,8 @@
#define cpu_has_dc_aliases (PAGE_SIZE < 0x4000)
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
+
#define cpu_has_nofpuex 0
#define cpu_has_64bits 1
diff --git a/include/asm-mips/mach-ip27/cpu-feature-overrides.h b/include/asm-mips/mach-ip27/cpu-feature-overrides.h
index fe96d73..4c8a900 100644
--- a/include/asm-mips/mach-ip27/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ip27/cpu-feature-overrides.h
@@ -25,6 +25,7 @@
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_icache_snoops_remote_store 1
#define cpu_has_nofpuex 0
diff --git a/include/asm-mips/mach-ip32/cpu-feature-overrides.h b/include/asm-mips/mach-ip32/cpu-feature-overrides.h
index 0471397..ab37fc1 100644
--- a/include/asm-mips/mach-ip32/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ip32/cpu-feature-overrides.h
@@ -37,5 +37,6 @@
#define cpu_has_ejtag 0
#define cpu_has_vtag_icache 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */
diff --git a/include/asm-mips/mach-ja/cpu-feature-overrides.h b/include/asm-mips/mach-ja/cpu-feature-overrides.h
index ca57e7d..310609c 100644
--- a/include/asm-mips/mach-ja/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ja/cpu-feature-overrides.h
@@ -25,6 +25,7 @@
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_icache_snoops_remote_store 0
#define cpu_has_nofpuex 0
diff --git a/include/asm-mips/mach-ocelot3/cpu-feature-overrides.h b/include/asm-mips/mach-ocelot3/cpu-feature-overrides.h
index 7473512..1812fc0 100644
--- a/include/asm-mips/mach-ocelot3/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-ocelot3/cpu-feature-overrides.h
@@ -28,6 +28,7 @@
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_icache_snoops_remote_store 0
#define cpu_has_nofpuex 0
diff --git a/include/asm-mips/mach-rm200/cpu-feature-overrides.h b/include/asm-mips/mach-rm200/cpu-feature-overrides.h
index f487360..9b2a405 100644
--- a/include/asm-mips/mach-rm200/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-rm200/cpu-feature-overrides.h
@@ -31,6 +31,7 @@
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases (PAGE_SIZE < 0x4000)
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_has_nofpuex 0
#define cpu_has_64bits 1
diff --git a/include/asm-mips/mach-sibyte/cpu-feature-overrides.h b/include/asm-mips/mach-sibyte/cpu-feature-overrides.h
index a3a2cc6..193a666 100644
--- a/include/asm-mips/mach-sibyte/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-sibyte/cpu-feature-overrides.h
@@ -25,6 +25,7 @@
#define cpu_has_vtag_icache 1
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_icache_snoops_remote_store 0
#define cpu_has_nofpuex 0
diff --git a/include/asm-mips/mach-yosemite/cpu-feature-overrides.h b/include/asm-mips/mach-yosemite/cpu-feature-overrides.h
index 58603e3..63e9434 100644
--- a/include/asm-mips/mach-yosemite/cpu-feature-overrides.h
+++ b/include/asm-mips/mach-yosemite/cpu-feature-overrides.h
@@ -25,6 +25,7 @@
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 0
+#define cpu_has_dsp 0
#define cpu_icache_snoops_remote_store 0
#define cpu_has_nofpuex 0
diff --git a/include/asm-mips/mipsregs.h b/include/asm-mips/mipsregs.h
index 9b0ce45..1fad6ec 100644
--- a/include/asm-mips/mipsregs.h
+++ b/include/asm-mips/mipsregs.h
@@ -281,6 +281,11 @@
#define ST0_DL (_ULCAST_(1) << 24)
/*
+ * Enable the MIPS DSP ASE
+ */
+#define ST0_MX 0x01000000
+
+/*
* Bitfields in the TX39 family CP0 Configuration Register 3
*/
#define TX39_CONF_ICS_SHIFT 19
@@ -510,6 +515,7 @@
#define MIPS_CONF3_VINT (_ULCAST_(1) << 5)
#define MIPS_CONF3_VEIC (_ULCAST_(1) << 6)
#define MIPS_CONF3_LPA (_ULCAST_(1) << 7)
+#define MIPS_CONF3_DSP (_ULCAST_(1) << 10)
/*
* Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
@@ -986,6 +992,287 @@
: "=r" (__res)); \
__res;})
+#define rddsp(mask) \
+({ \
+ unsigned int __res; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # rddsp $1, %x1 \n" \
+ " .word 0x7c000cb8 | (%x1 << 16) \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__res) \
+ : "i" (mask)); \
+ __res; \
+})
+
+#define wrdsp(val, mask) \
+do { \
+ unsigned int __res; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # wrdsp $1, %x1 \n" \
+ " .word 0x7c2004f8 | (%x1 << 15) \n" \
+ " .set pop \n" \
+ : \
+ : "r" (val), "i" (mask)); \
+ __res; \
+} while (0)
+
+#if 0 /* Need DSP ASE capable assembler ... */
+#define mflo0() ({ long mflo0; __asm__("mflo %0, $ac0" : "=r" (mflo0)); mflo0;})
+#define mflo1() ({ long mflo1; __asm__("mflo %0, $ac1" : "=r" (mflo1)); mflo1;})
+#define mflo2() ({ long mflo2; __asm__("mflo %0, $ac2" : "=r" (mflo2)); mflo2;})
+#define mflo3() ({ long mflo3; __asm__("mflo %0, $ac3" : "=r" (mflo3)); mflo3;})
+
+#define mfhi0() ({ long mfhi0; __asm__("mfhi %0, $ac0" : "=r" (mfhi0)); mfhi0;})
+#define mfhi1() ({ long mfhi1; __asm__("mfhi %0, $ac1" : "=r" (mfhi1)); mfhi1;})
+#define mfhi2() ({ long mfhi2; __asm__("mfhi %0, $ac2" : "=r" (mfhi2)); mfhi2;})
+#define mfhi3() ({ long mfhi3; __asm__("mfhi %0, $ac3" : "=r" (mfhi3)); mfhi3;})
+
+#define mtlo0(x) __asm__("mtlo %0, $ac0" ::"r" (x))
+#define mtlo1(x) __asm__("mtlo %0, $ac1" ::"r" (x))
+#define mtlo2(x) __asm__("mtlo %0, $ac2" ::"r" (x))
+#define mtlo3(x) __asm__("mtlo %0, $ac3" ::"r" (x))
+
+#define mthi0(x) __asm__("mthi %0, $ac0" ::"r" (x))
+#define mthi1(x) __asm__("mthi %0, $ac1" ::"r" (x))
+#define mthi2(x) __asm__("mthi %0, $ac2" ::"r" (x))
+#define mthi3(x) __asm__("mthi %0, $ac3" ::"r" (x))
+
+#else
+
+#define mfhi0() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mfhi %0, $ac0 \n" \
+ " .word 0x00000810 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mfhi1() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mfhi %0, $ac1 \n" \
+ " .word 0x00200810 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mfhi2() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mfhi %0, $ac2 \n" \
+ " .word 0x00400810 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mfhi3() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mfhi %0, $ac3 \n" \
+ " .word 0x00600810 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mflo0() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mflo %0, $ac0 \n" \
+ " .word 0x00000812 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mflo1() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mflo %0, $ac1 \n" \
+ " .word 0x00200812 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mflo2() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mflo %0, $ac2 \n" \
+ " .word 0x00400812 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mflo3() \
+({ \
+ unsigned long __treg; \
+ \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " # mflo %0, $ac3 \n" \
+ " .word 0x00600812 \n" \
+ " move %0, $1 \n" \
+ " .set pop \n" \
+ : "=r" (__treg)); \
+ __treg; \
+})
+
+#define mthi0(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mthi $1, $ac0 \n" \
+ " .word 0x00200011 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mthi1(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mthi $1, $ac1 \n" \
+ " .word 0x00200811 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mthi2(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mthi $1, $ac2 \n" \
+ " .word 0x00201011 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mthi3(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mthi $1, $ac3 \n" \
+ " .word 0x00201811 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mtlo0(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mtlo $1, $ac0 \n" \
+ " .word 0x00200013 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mtlo1(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mtlo $1, $ac1 \n" \
+ " .word 0x00200813 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mtlo2(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mtlo $1, $ac2 \n" \
+ " .word 0x00201013 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#define mtlo3(x) \
+do { \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noat \n" \
+ " move $1, %0 \n" \
+ " # mtlo $1, $ac3 \n" \
+ " .word 0x00201813 \n" \
+ " .set pop \n" \
+ : \
+ : "r" (x)); \
+} while (0)
+
+#endif
+
/*
* TLB operations.
*
diff --git a/include/asm-mips/processor.h b/include/asm-mips/processor.h
index d6466aa..f1980c6c 100644
--- a/include/asm-mips/processor.h
+++ b/include/asm-mips/processor.h
@@ -96,12 +96,26 @@
{{0,},} \
}
+#define NUM_DSP_REGS 6
+
+typedef __u32 dspreg_t;
+
+struct mips_dsp_state {
+ dspreg_t dspr[NUM_DSP_REGS];
+ unsigned int dspcontrol;
+ unsigned short used_dsp;
+};
+
+#define INIT_DSP {{0,},}
+
typedef struct {
unsigned long seg;
} mm_segment_t;
#define ARCH_MIN_TASKALIGN 8
+struct mips_abi;
+
/*
* If you change thread_struct remember to change the #defines below too!
*/
@@ -117,6 +131,9 @@
/* Saved fpu/fpu emulator stuff. */
union mips_fpu_union fpu;
+ /* Saved state of the DSP ASE, if available. */
+ struct mips_dsp_state dsp;
+
/* Other stuff associated with the thread. */
unsigned long cp0_badvaddr; /* Last user fault */
unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
@@ -129,6 +146,7 @@
unsigned long mflags;
unsigned long irix_trampoline; /* Wheee... */
unsigned long irix_oldctx;
+ struct mips_abi *abi;
};
#define MF_ABI_MASK (MF_32BIT_REGS | MF_32BIT_ADDR)
@@ -151,6 +169,10 @@
*/ \
INIT_FPU, \
/* \
+ * saved dsp/dsp emulator stuff \
+ */ \
+ INIT_DSP, \
+ /* \
* Other stuff associated with the process \
*/ \
0, 0, 0, 0, \
diff --git a/include/asm-mips/ptrace.h b/include/asm-mips/ptrace.h
index 2b5c624..8441a5a 100644
--- a/include/asm-mips/ptrace.h
+++ b/include/asm-mips/ptrace.h
@@ -22,6 +22,8 @@
#define MMLO 68
#define FPC_CSR 69
#define FPC_EIR 70
+#define DSP_BASE 71 /* 3 more hi / lo register pairs */
+#define DSP_CONTROL 77
/*
* This struct defines the way the registers are stored on the stack during a
@@ -38,8 +40,8 @@
/* Saved special registers. */
unsigned long cp0_status;
- unsigned long lo;
unsigned long hi;
+ unsigned long lo;
unsigned long cp0_badvaddr;
unsigned long cp0_cause;
unsigned long cp0_epc;
diff --git a/include/asm-mips/sigcontext.h b/include/asm-mips/sigcontext.h
index f7fbeba..8edabb0 100644
--- a/include/asm-mips/sigcontext.h
+++ b/include/asm-mips/sigcontext.h
@@ -27,14 +27,15 @@
unsigned int sc_fpc_csr;
unsigned int sc_fpc_eir; /* Unused */
unsigned int sc_used_math;
- unsigned int sc_ssflags; /* Unused */
+ unsigned int sc_dsp; /* dsp status, was sc_ssflags */
unsigned long long sc_mdhi;
unsigned long long sc_mdlo;
-
- unsigned int sc_cause; /* Unused */
- unsigned int sc_badvaddr; /* Unused */
-
- unsigned long sc_sigset[4]; /* kernel's sigset_t */
+ unsigned long sc_hi1; /* Was sc_cause */
+ unsigned long sc_lo1; /* Was sc_badvaddr */
+ unsigned long sc_hi2; /* Was sc_sigset[4] */
+ unsigned long sc_lo2;
+ unsigned long sc_hi3;
+ unsigned long sc_lo3;
};
#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
@@ -48,19 +49,19 @@
* Warning: this structure illdefined with sc_badvaddr being just an unsigned
* int so it was changed to unsigned long in 2.6.0-test1. This may break
* binary compatibility - no prisoners.
+ * DSP ASE in 2.6.12-rc4. Turn sc_mdhi and sc_mdlo into an array of four
+ * entries, add sc_dsp and sc_reserved for padding. No prisoners.
*/
struct sigcontext {
unsigned long sc_regs[32];
unsigned long sc_fpregs[32];
- unsigned long sc_mdhi;
- unsigned long sc_mdlo;
+ unsigned long sc_hi[4];
+ unsigned long sc_lo[4];
unsigned long sc_pc;
- unsigned long sc_badvaddr;
- unsigned int sc_status;
unsigned int sc_fpc_csr;
- unsigned int sc_fpc_eir;
unsigned int sc_used_math;
- unsigned int sc_cause;
+ unsigned int sc_dsp;
+ unsigned int sc_reserved;
};
#ifdef __KERNEL__
@@ -68,23 +69,24 @@
#include <linux/posix_types.h>
struct sigcontext32 {
- __u32 sc_regmask; /* Unused */
- __u32 sc_status;
- __u64 sc_pc;
- __u64 sc_regs[32];
- __u64 sc_fpregs[32];
- __u32 sc_ownedfp; /* Unused */
- __u32 sc_fpc_csr;
- __u32 sc_fpc_eir; /* Unused */
- __u32 sc_used_math;
- __u32 sc_ssflags; /* Unused */
- __u64 sc_mdhi;
- __u64 sc_mdlo;
-
- __u32 sc_cause; /* Unused */
- __u32 sc_badvaddr; /* Unused */
-
- __u32 sc_sigset[4]; /* kernel's sigset_t */
+ __u32 sc_regmask; /* Unused */
+ __u32 sc_status;
+ __u64 sc_pc;
+ __u64 sc_regs[32];
+ __u64 sc_fpregs[32];
+ __u32 sc_ownedfp; /* Unused */
+ __u32 sc_fpc_csr;
+ __u32 sc_fpc_eir; /* Unused */
+ __u32 sc_used_math;
+ __u32 sc_dsp; /* dsp status, was sc_ssflags */
+ __u64 sc_mdhi;
+ __u64 sc_mdlo;
+ __u32 sc_hi1; /* Was sc_cause */
+ __u32 sc_lo1; /* Was sc_badvaddr */
+ __u32 sc_hi2; /* Was sc_sigset[4] */
+ __u32 sc_lo2;
+ __u32 sc_hi3;
+ __u32 sc_lo3;
};
#endif /* __KERNEL__ */
diff --git a/include/asm-mips/signal.h b/include/asm-mips/signal.h
index f2c470f..8ca539e 100644
--- a/include/asm-mips/signal.h
+++ b/include/asm-mips/signal.h
@@ -98,12 +98,39 @@
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
+#ifdef __KERNEL__
+
+/*
+ * These values of sa_flags are used only by the kernel as part of the
+ * irq handling routines.
+ *
+ * SA_INTERRUPT is also used by the irq handling routines.
+ * SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
+ */
+#define SA_SAMPLE_RANDOM SA_RESTART
+
+#ifdef CONFIG_TRAD_SIGNALS
+#define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO)
+#else
+#define sig_uses_siginfo(ka) (1)
+#endif
+
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 1 /* for blocking signals */
#define SIG_UNBLOCK 2 /* for unblocking signals */
#define SIG_SETMASK 3 /* for setting the signal mask */
#define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
set only the low 32 bit of the sigset. */
-#include <asm-generic/signal.h>
+
+/* Type of a signal handler. */
+typedef void __signalfn_t(int);
+typedef __signalfn_t __user *__sighandler_t;
+
+/* Fake signal functions */
+#define SIG_DFL ((__sighandler_t)0) /* default signal handling */
+#define SIG_IGN ((__sighandler_t)1) /* ignore signal */
+#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
struct sigaction {
unsigned int sa_flags;
diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h
index 6663efd..cd3a6bc 100644
--- a/include/asm-mips/system.h
+++ b/include/asm-mips/system.h
@@ -17,6 +17,7 @@
#include <asm/addrspace.h>
#include <asm/cpu-features.h>
+#include <asm/dsp.h>
#include <asm/ptrace.h>
#include <asm/war.h>
#include <asm/interrupt.h>
@@ -154,9 +155,13 @@
struct task_struct;
-#define switch_to(prev,next,last) \
-do { \
- (last) = resume(prev, next, next->thread_info); \
+#define switch_to(prev,next,last) \
+do { \
+ if (cpu_has_dsp) \
+ __save_dsp(prev); \
+ (last) = resume(prev, next, next->thread_info); \
+ if (cpu_has_dsp) \
+ __restore_dsp(current); \
} while(0)
#define ROT_IN_PIECES \