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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-26 22:53:12 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-26 22:53:12 -0500
commit9626357371b519f2b955fef399647181034a77fe (patch)
tree232abd741e773c7d3afb4ba6b02fcba03b82214d /arch/xtensa
parent2b37e9a28afbd11f899738e912fb4a617a74b462 (diff)
parent9cf81c759b7db1db593b2ca60b74ec350d5f9205 (diff)
Merge tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linux
Pull xtensa update from Chris Zankel: "Added features: - add support for thread local storage (TLS) - add accept4 and finit_module syscalls - support medium-priority interrupts - add support for dc232c processor variant - support file-base simulated disk for ISS simulator Bug fixes: - fix return values returned by the str[n]cmp functions - avoid mmap cache aliasing - fix handling of 'windowed registers' in ptrace" * tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linux: xtensa: add accept4 syscall xtensa: add support for TLS xtensa: add missing include asm/uaccess.h to checksum.h xtensa: do not enable GENERIC_GPIO by default xtensa: complete ptrace handling of register windows xtensa: add support for oprofile xtensa: move spill_registers to traps.h xtensa: ISS: add host file-based simulated disk xtensa: fix str[n]cmp return value xtensa: avoid mmap cache aliasing xtensa: add finit_module syscall xtensa: pull signal definitions from signal-defs.h xtensa: fix ipc_parse_version selection xtensa: dispatch medium-priority interrupts xtensa: Add config files for Diamond 233L - Rev C processor variant xtensa: use new common dtc rule xtensa: rename prom_update_property to of_update_property
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/Kconfig46
-rw-r--r--arch/xtensa/Makefile6
-rw-r--r--arch/xtensa/boot/Makefile12
-rw-r--r--arch/xtensa/boot/dts/Makefile15
-rw-r--r--arch/xtensa/include/asm/atomic.h6
-rw-r--r--arch/xtensa/include/asm/checksum.h1
-rw-r--r--arch/xtensa/include/asm/elf.h3
-rw-r--r--arch/xtensa/include/asm/pgtable.h4
-rw-r--r--arch/xtensa/include/asm/processor.h4
-rw-r--r--arch/xtensa/include/asm/ptrace.h3
-rw-r--r--arch/xtensa/include/asm/regs.h1
-rw-r--r--arch/xtensa/include/asm/string.h4
-rw-r--r--arch/xtensa/include/asm/timex.h8
-rw-r--r--arch/xtensa/include/asm/traps.h24
-rw-r--r--arch/xtensa/include/uapi/asm/signal.h11
-rw-r--r--arch/xtensa/include/uapi/asm/unistd.h7
-rw-r--r--arch/xtensa/kernel/asm-offsets.c1
-rw-r--r--arch/xtensa/kernel/entry.S69
-rw-r--r--arch/xtensa/kernel/head.S9
-rw-r--r--arch/xtensa/kernel/process.c5
-rw-r--r--arch/xtensa/kernel/ptrace.c35
-rw-r--r--arch/xtensa/kernel/setup.c42
-rw-r--r--arch/xtensa/kernel/signal.c6
-rw-r--r--arch/xtensa/kernel/syscall.c41
-rw-r--r--arch/xtensa/kernel/traps.c74
-rw-r--r--arch/xtensa/kernel/vectors.S57
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S68
-rw-r--r--arch/xtensa/oprofile/Makefile9
-rw-r--r--arch/xtensa/oprofile/backtrace.c171
-rw-r--r--arch/xtensa/oprofile/init.c26
-rw-r--r--arch/xtensa/platforms/iss/Makefile1
-rw-r--r--arch/xtensa/platforms/iss/simdisk.c375
-rw-r--r--arch/xtensa/platforms/xtfpga/setup.c4
-rw-r--r--arch/xtensa/variants/dc233c/include/variant/core.h475
-rw-r--r--arch/xtensa/variants/dc233c/include/variant/tie-asm.h193
-rw-r--r--arch/xtensa/variants/dc233c/include/variant/tie.h150
36 files changed, 1851 insertions, 115 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index cb557be492b1..a5c0663c2cdc 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -13,9 +13,11 @@ config XTENSA
13 select GENERIC_CPU_DEVICES 13 select GENERIC_CPU_DEVICES
14 select MODULES_USE_ELF_RELA 14 select MODULES_USE_ELF_RELA
15 select GENERIC_PCI_IOMAP 15 select GENERIC_PCI_IOMAP
16 select ARCH_WANT_IPC_PARSE_VERSION
16 select ARCH_WANT_OPTIONAL_GPIOLIB 17 select ARCH_WANT_OPTIONAL_GPIOLIB
17 select CLONE_BACKWARDS 18 select CLONE_BACKWARDS
18 select IRQ_DOMAIN 19 select IRQ_DOMAIN
20 select HAVE_OPROFILE
19 help 21 help
20 Xtensa processors are 32-bit RISC machines designed by Tensilica 22 Xtensa processors are 32-bit RISC machines designed by Tensilica
21 primarily for embedded systems. These processors are both 23 primarily for embedded systems. These processors are both
@@ -31,7 +33,7 @@ config GENERIC_HWEIGHT
31 def_bool y 33 def_bool y
32 34
33config GENERIC_GPIO 35config GENERIC_GPIO
34 def_bool y 36 bool
35 37
36config ARCH_HAS_ILOG2_U32 38config ARCH_HAS_ILOG2_U32
37 def_bool n 39 def_bool n
@@ -71,6 +73,12 @@ config XTENSA_VARIANT_DC232B
71 help 73 help
72 This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). 74 This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
73 75
76config XTENSA_VARIANT_DC233C
77 bool "dc233c - Diamond 233L Standard Core Rev.C (LE)"
78 select MMU
79 help
80 This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE).
81
74config XTENSA_VARIANT_S6000 82config XTENSA_VARIANT_S6000
75 bool "s6000 - Stretch software configurable processor" 83 bool "s6000 - Stretch software configurable processor"
76 select VARIANT_IRQ_SWITCH 84 select VARIANT_IRQ_SWITCH
@@ -197,6 +205,42 @@ config BUILTIN_DTB
197 string "DTB to build into the kernel image" 205 string "DTB to build into the kernel image"
198 depends on OF 206 depends on OF
199 207
208config BLK_DEV_SIMDISK
209 tristate "Host file-based simulated block device support"
210 default n
211 depends on XTENSA_PLATFORM_ISS
212 help
213 Create block devices that map to files in the host file system.
214 Device binding to host file may be changed at runtime via proc
215 interface provided the device is not in use.
216
217config BLK_DEV_SIMDISK_COUNT
218 int "Number of host file-based simulated block devices"
219 range 1 10
220 depends on BLK_DEV_SIMDISK
221 default 2
222 help
223 This is the default minimal number of created block devices.
224 Kernel/module parameter 'simdisk_count' may be used to change this
225 value at runtime. More file names (but no more than 10) may be
226 specified as parameters, simdisk_count grows accordingly.
227
228config SIMDISK0_FILENAME
229 string "Host filename for the first simulated device"
230 depends on BLK_DEV_SIMDISK = y
231 default ""
232 help
233 Attach a first simdisk to a host file. Conventionally, this file
234 contains a root file system.
235
236config SIMDISK1_FILENAME
237 string "Host filename for the second simulated device"
238 depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1
239 default ""
240 help
241 Another simulated disk in a host file for a buildroot-independent
242 storage.
243
200source "mm/Kconfig" 244source "mm/Kconfig"
201 245
202source "drivers/pcmcia/Kconfig" 246source "drivers/pcmcia/Kconfig"
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 0aa72702f179..136224b74d4f 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -15,6 +15,7 @@
15 15
16variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf 16variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf
17variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b 17variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b
18variant-$(CONFIG_XTENSA_VARIANT_DC233C) := dc233c
18variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000 19variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000
19variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom 20variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom
20 21
@@ -86,9 +87,10 @@ core-y += arch/xtensa/kernel/ arch/xtensa/mm/
86core-y += $(buildvar) $(buildplf) 87core-y += $(buildvar) $(buildplf)
87 88
88libs-y += arch/xtensa/lib/ $(LIBGCC) 89libs-y += arch/xtensa/lib/ $(LIBGCC)
90drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/
89 91
90ifneq ($(CONFIG_BUILTIN_DTB),"") 92ifneq ($(CONFIG_BUILTIN_DTB),"")
91core-$(CONFIG_OF) += arch/xtensa/boot/ 93core-$(CONFIG_OF) += arch/xtensa/boot/dts/
92endif 94endif
93 95
94boot := arch/xtensa/boot 96boot := arch/xtensa/boot
@@ -101,7 +103,7 @@ zImage: vmlinux
101 $(Q)$(MAKE) $(build)=$(boot) $@ 103 $(Q)$(MAKE) $(build)=$(boot) $@
102 104
103%.dtb: 105%.dtb:
104 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 106 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
105 107
106define archhelp 108define archhelp
107 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 109 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
diff --git a/arch/xtensa/boot/Makefile b/arch/xtensa/boot/Makefile
index 818647e815d7..64ffc4b53df6 100644
--- a/arch/xtensa/boot/Makefile
+++ b/arch/xtensa/boot/Makefile
@@ -25,18 +25,6 @@ bootdir-$(CONFIG_XTENSA_PLATFORM_ISS) += boot-elf
25bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf boot-uboot 25bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf boot-uboot
26bootdir-$(CONFIG_XTENSA_PLATFORM_XTFPGA) += boot-redboot boot-elf boot-uboot 26bootdir-$(CONFIG_XTENSA_PLATFORM_XTFPGA) += boot-redboot boot-elf boot-uboot
27 27
28
29BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB)).dtb.o
30ifneq ($(CONFIG_BUILTIN_DTB),"")
31obj-$(CONFIG_OF) += $(BUILTIN_DTB)
32endif
33
34# Rule to build device tree blobs
35$(obj)/%.dtb: $(src)/dts/%.dts FORCE
36 $(call if_changed_dep,dtc)
37
38clean-files := *.dtb.S
39
40zImage Image: $(bootdir-y) 28zImage Image: $(bootdir-y)
41 29
42$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \ 30$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
diff --git a/arch/xtensa/boot/dts/Makefile b/arch/xtensa/boot/dts/Makefile
new file mode 100644
index 000000000000..5f711bba8307
--- /dev/null
+++ b/arch/xtensa/boot/dts/Makefile
@@ -0,0 +1,15 @@
1#
2# arch/xtensa/boot/dts/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8#
9
10BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB)).dtb.o
11ifneq ($(CONFIG_BUILTIN_DTB),"")
12obj-$(CONFIG_OF) += $(BUILTIN_DTB)
13endif
14
15clean-files := *.dtb.S
diff --git a/arch/xtensa/include/asm/atomic.h b/arch/xtensa/include/asm/atomic.h
index c3f289174c10..e7fb447bce8e 100644
--- a/arch/xtensa/include/asm/atomic.h
+++ b/arch/xtensa/include/asm/atomic.h
@@ -7,7 +7,7 @@
7 * License. See the file "COPYING" in the main directory of this archive 7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details. 8 * for more details.
9 * 9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc. 10 * Copyright (C) 2001 - 2008 Tensilica Inc.
11 */ 11 */
12 12
13#ifndef _XTENSA_ATOMIC_H 13#ifndef _XTENSA_ATOMIC_H
@@ -24,11 +24,11 @@
24 24
25/* 25/*
26 * This Xtensa implementation assumes that the right mechanism 26 * This Xtensa implementation assumes that the right mechanism
27 * for exclusion is for locking interrupts to level 1. 27 * for exclusion is for locking interrupts to level EXCM_LEVEL.
28 * 28 *
29 * Locking interrupts looks like this: 29 * Locking interrupts looks like this:
30 * 30 *
31 * rsil a15, 1 31 * rsil a15, LOCKLEVEL
32 * <code> 32 * <code>
33 * wsr a15, PS 33 * wsr a15, PS
34 * rsync 34 * rsync
diff --git a/arch/xtensa/include/asm/checksum.h b/arch/xtensa/include/asm/checksum.h
index aed7ad68ca46..0593de689b56 100644
--- a/arch/xtensa/include/asm/checksum.h
+++ b/arch/xtensa/include/asm/checksum.h
@@ -12,6 +12,7 @@
12#define _XTENSA_CHECKSUM_H 12#define _XTENSA_CHECKSUM_H
13 13
14#include <linux/in6.h> 14#include <linux/in6.h>
15#include <asm/uaccess.h>
15#include <variant/core.h> 16#include <variant/core.h>
16 17
17/* 18/*
diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h
index 264d5fa450d8..eacb25a41718 100644
--- a/arch/xtensa/include/asm/elf.h
+++ b/arch/xtensa/include/asm/elf.h
@@ -84,7 +84,8 @@ typedef struct {
84 elf_greg_t sar; 84 elf_greg_t sar;
85 elf_greg_t windowstart; 85 elf_greg_t windowstart;
86 elf_greg_t windowbase; 86 elf_greg_t windowbase;
87 elf_greg_t reserved[8+48]; 87 elf_greg_t threadptr;
88 elf_greg_t reserved[7+48];
88 elf_greg_t a[64]; 89 elf_greg_t a[64];
89} xtensa_gregset_t; 90} xtensa_gregset_t;
90 91
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
index c90ea5bfa1b4..d7546c94da52 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -410,6 +410,10 @@ typedef pte_t *pte_addr_t;
410#define __HAVE_ARCH_PTEP_SET_WRPROTECT 410#define __HAVE_ARCH_PTEP_SET_WRPROTECT
411#define __HAVE_ARCH_PTEP_MKDIRTY 411#define __HAVE_ARCH_PTEP_MKDIRTY
412#define __HAVE_ARCH_PTE_SAME 412#define __HAVE_ARCH_PTE_SAME
413/* We provide our own get_unmapped_area to cope with
414 * SHM area cache aliasing for userland.
415 */
416#define HAVE_ARCH_UNMAPPED_AREA
413 417
414#include <asm-generic/pgtable.h> 418#include <asm-generic/pgtable.h>
415 419
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index e5fb6b0abdf4..7e409a5b0ec5 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -5,7 +5,7 @@
5 * License. See the file "COPYING" in the main directory of this archive 5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details. 6 * for more details.
7 * 7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc. 8 * Copyright (C) 2001 - 2008 Tensilica Inc.
9 */ 9 */
10 10
11#ifndef _XTENSA_PROCESSOR_H 11#ifndef _XTENSA_PROCESSOR_H
@@ -68,7 +68,7 @@
68/* LOCKLEVEL defines the interrupt level that masks all 68/* LOCKLEVEL defines the interrupt level that masks all
69 * general-purpose interrupts. 69 * general-purpose interrupts.
70 */ 70 */
71#define LOCKLEVEL 1 71#define LOCKLEVEL XCHAL_EXCM_LEVEL
72 72
73/* WSBITS and WBBITS are the width of the WINDOWSTART and WINDOWBASE 73/* WSBITS and WBBITS are the width of the WINDOWSTART and WINDOWBASE
74 * registers 74 * registers
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 682b1deac1f2..81f31bc9dde0 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -38,6 +38,7 @@ struct pt_regs {
38 unsigned long syscall; /* 56 */ 38 unsigned long syscall; /* 56 */
39 unsigned long icountlevel; /* 60 */ 39 unsigned long icountlevel; /* 60 */
40 unsigned long scompare1; /* 64 */ 40 unsigned long scompare1; /* 64 */
41 unsigned long threadptr; /* 68 */
41 42
42 /* Additional configurable registers that are used by the compiler. */ 43 /* Additional configurable registers that are used by the compiler. */
43 xtregs_opt_t xtregs_opt; 44 xtregs_opt_t xtregs_opt;
@@ -48,7 +49,7 @@ struct pt_regs {
48 /* current register frame. 49 /* current register frame.
49 * Note: The ESF for kernel exceptions ends after 16 registers! 50 * Note: The ESF for kernel exceptions ends after 16 registers!
50 */ 51 */
51 unsigned long areg[16]; /* 128 (64) */ 52 unsigned long areg[16];
52}; 53};
53 54
54#include <variant/core.h> 55#include <variant/core.h>
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
index 76096a4e5b8d..b24de6717020 100644
--- a/arch/xtensa/include/asm/regs.h
+++ b/arch/xtensa/include/asm/regs.h
@@ -88,6 +88,7 @@
88#define PS_UM_BIT 5 88#define PS_UM_BIT 5
89#define PS_EXCM_BIT 4 89#define PS_EXCM_BIT 4
90#define PS_INTLEVEL_SHIFT 0 90#define PS_INTLEVEL_SHIFT 0
91#define PS_INTLEVEL_WIDTH 4
91#define PS_INTLEVEL_MASK 0x0000000F 92#define PS_INTLEVEL_MASK 0x0000000F
92 93
93/* DBREAKCn register fields. */ 94/* DBREAKCn register fields. */
diff --git a/arch/xtensa/include/asm/string.h b/arch/xtensa/include/asm/string.h
index 405a8c49ff2c..8d5d9dfadb09 100644
--- a/arch/xtensa/include/asm/string.h
+++ b/arch/xtensa/include/asm/string.h
@@ -74,7 +74,7 @@ static inline int strcmp(const char *__cs, const char *__ct)
74 "beqz %2, 2f\n\t" 74 "beqz %2, 2f\n\t"
75 "beq %2, %3, 1b\n" 75 "beq %2, %3, 1b\n"
76 "2:\n\t" 76 "2:\n\t"
77 "sub %2, %3, %2" 77 "sub %2, %2, %3"
78 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy) 78 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
79 : "0" (__cs), "1" (__ct)); 79 : "0" (__cs), "1" (__ct));
80 80
@@ -99,7 +99,7 @@ static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
99 "beqz %3, 2f\n\t" 99 "beqz %3, 2f\n\t"
100 "beq %2, %3, 1b\n" 100 "beq %2, %3, 1b\n"
101 "2:\n\t" 101 "2:\n\t"
102 "sub %2, %3, %2" 102 "sub %2, %2, %3"
103 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy) 103 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
104 : "0" (__cs), "1" (__ct), "r" (__cs+__n)); 104 : "0" (__cs), "1" (__ct), "r" (__cs+__n));
105 105
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
index 175b3d5e1b01..9e85ce8bd8dd 100644
--- a/arch/xtensa/include/asm/timex.h
+++ b/arch/xtensa/include/asm/timex.h
@@ -5,7 +5,7 @@
5 * License. See the file "COPYING" in the main directory of this archive 5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details. 6 * for more details.
7 * 7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc. 8 * Copyright (C) 2001 - 2008 Tensilica Inc.
9 */ 9 */
10 10
11#ifndef _XTENSA_TIMEX_H 11#ifndef _XTENSA_TIMEX_H
@@ -19,13 +19,13 @@
19#define _INTLEVEL(x) XCHAL_INT ## x ## _LEVEL 19#define _INTLEVEL(x) XCHAL_INT ## x ## _LEVEL
20#define INTLEVEL(x) _INTLEVEL(x) 20#define INTLEVEL(x) _INTLEVEL(x)
21 21
22#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1 22#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
23# define LINUX_TIMER 0 23# define LINUX_TIMER 0
24# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT 24# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
25#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1 25#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL
26# define LINUX_TIMER 1 26# define LINUX_TIMER 1
27# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT 27# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
28#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1 28#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL
29# define LINUX_TIMER 2 29# define LINUX_TIMER 2
30# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT 30# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
31#else 31#else
diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h
index 54f70440185e..b5464ef3cf66 100644
--- a/arch/xtensa/include/asm/traps.h
+++ b/arch/xtensa/include/asm/traps.h
@@ -20,4 +20,28 @@
20extern void * __init trap_set_handler(int cause, void *handler); 20extern void * __init trap_set_handler(int cause, void *handler);
21extern void do_unhandled(struct pt_regs *regs, unsigned long exccause); 21extern void do_unhandled(struct pt_regs *regs, unsigned long exccause);
22 22
23static inline void spill_registers(void)
24{
25 unsigned int a0, ps;
26
27 __asm__ __volatile__ (
28 "movi a14, " __stringify(PS_EXCM_BIT | LOCKLEVEL) "\n\t"
29 "mov a12, a0\n\t"
30 "rsr a13, sar\n\t"
31 "xsr a14, ps\n\t"
32 "movi a0, _spill_registers\n\t"
33 "rsync\n\t"
34 "callx0 a0\n\t"
35 "mov a0, a12\n\t"
36 "wsr a13, sar\n\t"
37 "wsr a14, ps\n\t"
38 : : "a" (&a0), "a" (&ps)
39#if defined(CONFIG_FRAME_POINTER)
40 : "a2", "a3", "a4", "a11", "a12", "a13", "a14", "a15",
41#else
42 : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15",
43#endif
44 "memory");
45}
46
23#endif /* _XTENSA_TRAPS_H */ 47#endif /* _XTENSA_TRAPS_H */
diff --git a/arch/xtensa/include/uapi/asm/signal.h b/arch/xtensa/include/uapi/asm/signal.h
index dacf716dd3e0..586756ee267a 100644
--- a/arch/xtensa/include/uapi/asm/signal.h
+++ b/arch/xtensa/include/uapi/asm/signal.h
@@ -102,16 +102,7 @@ typedef struct {
102 102
103#ifndef __ASSEMBLY__ 103#ifndef __ASSEMBLY__
104 104
105#define SIG_BLOCK 0 /* for blocking signals */ 105#include <asm-generic/signal-defs.h>
106#define SIG_UNBLOCK 1 /* for unblocking signals */
107#define SIG_SETMASK 2 /* for setting the signal mask */
108
109/* Type of a signal handler. */
110typedef void (*__sighandler_t)(int);
111
112#define SIG_DFL ((__sighandler_t)0) /* default signal handling */
113#define SIG_IGN ((__sighandler_t)1) /* ignore signal */
114#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
115 106
116#ifndef __KERNEL__ 107#ifndef __KERNEL__
117 108
diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h
index 19fac3f543a2..51940fec6990 100644
--- a/arch/xtensa/include/uapi/asm/unistd.h
+++ b/arch/xtensa/include/uapi/asm/unistd.h
@@ -728,8 +728,13 @@ __SYSCALL(330, sys_prlimit64, 4)
728#define __NR_kcmp 331 728#define __NR_kcmp 331
729__SYSCALL(331, sys_kcmp, 5) 729__SYSCALL(331, sys_kcmp, 5)
730 730
731#define __NR_finit_module 332
732__SYSCALL(332, sys_finit_module, 3)
731 733
732#define __NR_syscall_count 332 734#define __NR_accept4 333
735__SYSCALL(333, sys_accept4, 4)
736
737#define __NR_syscall_count 334
733 738
734/* 739/*
735 * sysxtensa syscall handler 740 * sysxtensa syscall handler
diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c
index 0701fad170db..1915c7c889ba 100644
--- a/arch/xtensa/kernel/asm-offsets.c
+++ b/arch/xtensa/kernel/asm-offsets.c
@@ -42,6 +42,7 @@ int main(void)
42 DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel)); 42 DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
43 DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall)); 43 DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
44 DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1)); 44 DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1));
45 DEFINE(PT_THREADPTR, offsetof(struct pt_regs, threadptr));
45 DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0])); 46 DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
46 DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0])); 47 DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
47 DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1])); 48 DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 3777fec85e7c..63845f950792 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -7,7 +7,7 @@
7 * License. See the file "COPYING" in the main directory of this archive 7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details. 8 * for more details.
9 * 9 *
10 * Copyright (C) 2004-2007 by Tensilica Inc. 10 * Copyright (C) 2004 - 2008 by Tensilica Inc.
11 * 11 *
12 * Chris Zankel <chris@zankel.net> 12 * Chris Zankel <chris@zankel.net>
13 * 13 *
@@ -130,6 +130,11 @@ _user_exception:
130 s32i a3, a1, PT_SAR 130 s32i a3, a1, PT_SAR
131 s32i a2, a1, PT_ICOUNTLEVEL 131 s32i a2, a1, PT_ICOUNTLEVEL
132 132
133#if XCHAL_HAVE_THREADPTR
134 rur a2, threadptr
135 s32i a2, a1, PT_THREADPTR
136#endif
137
133 /* Rotate ws so that the current windowbase is at bit0. */ 138 /* Rotate ws so that the current windowbase is at bit0. */
134 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */ 139 /* Assume ws = xxwww1yyyy. Rotate ws right, so that a2 = yyyyxxwww1 */
135 140
@@ -349,15 +354,16 @@ common_exception:
349 * so we can allow exceptions and interrupts (*) again. 354 * so we can allow exceptions and interrupts (*) again.
350 * Set PS(EXCM = 0, UM = 0, RING = 0, OWB = 0, WOE = 1, INTLEVEL = X) 355 * Set PS(EXCM = 0, UM = 0, RING = 0, OWB = 0, WOE = 1, INTLEVEL = X)
351 * 356 *
352 * (*) We only allow interrupts if PS.INTLEVEL was not set to 1 before 357 * (*) We only allow interrupts of higher priority than current IRQ
353 * (interrupts disabled) and if this exception is not an interrupt.
354 */ 358 */
355 359
356 rsr a3, ps 360 rsr a3, ps
357 addi a0, a0, -4 361 addi a0, a0, -4
358 movi a2, 1 362 movi a2, 1
359 extui a3, a3, 0, 1 # a3 = PS.INTLEVEL[0] 363 extui a3, a3, PS_INTLEVEL_SHIFT, PS_INTLEVEL_WIDTH
360 moveqz a3, a2, a0 # a3 = 1 iff interrupt exception 364 # a3 = PS.INTLEVEL
365 movnez a2, a3, a3 # a2 = 1: level-1, > 1: high priority
366 moveqz a3, a2, a0 # a3 = IRQ level iff interrupt
361 movi a2, 1 << PS_WOE_BIT 367 movi a2, 1 << PS_WOE_BIT
362 or a3, a3, a2 368 or a3, a3, a2
363 rsr a0, exccause 369 rsr a0, exccause
@@ -398,7 +404,7 @@ common_exception:
398 callx4 a4 404 callx4 a4
399 405
400 /* Jump here for exception exit */ 406 /* Jump here for exception exit */
401 407 .global common_exception_return
402common_exception_return: 408common_exception_return:
403 409
404 /* Jump if we are returning from kernel exceptions. */ 410 /* Jump if we are returning from kernel exceptions. */
@@ -509,6 +515,11 @@ user_exception_exit:
509 * (if we have restored WSBITS-1 frames). 515 * (if we have restored WSBITS-1 frames).
510 */ 516 */
511 517
518#if XCHAL_HAVE_THREADPTR
519 l32i a3, a1, PT_THREADPTR
520 wur a3, threadptr
521#endif
522
5122: j common_exception_exit 5232: j common_exception_exit
513 524
514 /* This is the kernel exception exit. 525 /* This is the kernel exception exit.
@@ -641,19 +652,51 @@ common_exception_exit:
641 652
642 l32i a0, a1, PT_DEPC 653 l32i a0, a1, PT_DEPC
643 l32i a3, a1, PT_AREG3 654 l32i a3, a1, PT_AREG3
655 _bltui a0, VALID_DOUBLE_EXCEPTION_ADDRESS, 1f
656
657 wsr a0, depc
644 l32i a2, a1, PT_AREG2 658 l32i a2, a1, PT_AREG2
645 _bgeui a0, VALID_DOUBLE_EXCEPTION_ADDRESS, 1f 659 l32i a0, a1, PT_AREG0
660 l32i a1, a1, PT_AREG1
661 rfde
646 662
6631:
647 /* Restore a0...a3 and return */ 664 /* Restore a0...a3 and return */
648 665
666 rsr a0, ps
667 extui a2, a0, PS_INTLEVEL_SHIFT, PS_INTLEVEL_WIDTH
668 movi a0, 2f
669 slli a2, a2, 4
670 add a0, a2, a0
671 l32i a2, a1, PT_AREG2
672 jx a0
673
674 .macro irq_exit_level level
675 .align 16
676 .if XCHAL_EXCM_LEVEL >= \level
677 l32i a0, a1, PT_PC
678 wsr a0, epc\level
649 l32i a0, a1, PT_AREG0 679 l32i a0, a1, PT_AREG0
650 l32i a1, a1, PT_AREG1 680 l32i a1, a1, PT_AREG1
651 rfe 681 rfi \level
682 .endif
683 .endm
652 684
6531: wsr a0, depc 685 .align 16
6862:
654 l32i a0, a1, PT_AREG0 687 l32i a0, a1, PT_AREG0
655 l32i a1, a1, PT_AREG1 688 l32i a1, a1, PT_AREG1
656 rfde 689 rfe
690
691 .align 16
692 /* no rfi for level-1 irq, handled by rfe above*/
693 nop
694
695 irq_exit_level 2
696 irq_exit_level 3
697 irq_exit_level 4
698 irq_exit_level 5
699 irq_exit_level 6
657 700
658ENDPROC(kernel_exception) 701ENDPROC(kernel_exception)
659 702
@@ -753,7 +796,7 @@ ENTRY(unrecoverable_exception)
753 wsr a1, windowbase 796 wsr a1, windowbase
754 rsync 797 rsync
755 798
756 movi a1, (1 << PS_WOE_BIT) | 1 799 movi a1, (1 << PS_WOE_BIT) | LOCKLEVEL
757 wsr a1, ps 800 wsr a1, ps
758 rsync 801 rsync
759 802
@@ -1474,7 +1517,7 @@ ENTRY(_spill_registers)
1474 l32i a1, a3, EXC_TABLE_KSTK 1517 l32i a1, a3, EXC_TABLE_KSTK
1475 wsr a3, excsave1 1518 wsr a3, excsave1
1476 1519
1477 movi a4, (1 << PS_WOE_BIT) | 1 1520 movi a4, (1 << PS_WOE_BIT) | LOCKLEVEL
1478 wsr a4, ps 1521 wsr a4, ps
1479 rsync 1522 rsync
1480 1523
@@ -1922,7 +1965,7 @@ ENTRY(_switch_to)
1922 s32i a6, a3, EXC_TABLE_FIXUP 1965 s32i a6, a3, EXC_TABLE_FIXUP
1923 s32i a7, a3, EXC_TABLE_KSTK 1966 s32i a7, a3, EXC_TABLE_KSTK
1924 1967
1925 /* restore context of the task that 'next' addresses */ 1968 /* restore context of the task 'next' */
1926 1969
1927 l32i a0, a13, THREAD_RA # restore return address 1970 l32i a0, a13, THREAD_RA # restore return address
1928 l32i a1, a13, THREAD_SP # restore stack pointer 1971 l32i a1, a13, THREAD_SP # restore stack pointer
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index 91d9095284de..df88f98737f4 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -7,7 +7,7 @@
7 * License. See the file "COPYING" in the main directory of this archive 7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details. 8 * for more details.
9 * 9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc. 10 * Copyright (C) 2001 - 2008 Tensilica Inc.
11 * 11 *
12 * Chris Zankel <chris@zankel.net> 12 * Chris Zankel <chris@zankel.net>
13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca> 13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
@@ -128,14 +128,14 @@ ENTRY(_startup)
128 wsr a0, cpenable 128 wsr a0, cpenable
129#endif 129#endif
130 130
131 /* Set PS.INTLEVEL=1, PS.WOE=0, kernel stack, PS.EXCM=0 131 /* Set PS.INTLEVEL=LOCKLEVEL, PS.WOE=0, kernel stack, PS.EXCM=0
132 * 132 *
133 * Note: PS.EXCM must be cleared before using any loop 133 * Note: PS.EXCM must be cleared before using any loop
134 * instructions; otherwise, they are silently disabled, and 134 * instructions; otherwise, they are silently disabled, and
135 * at most one iteration of the loop is executed. 135 * at most one iteration of the loop is executed.
136 */ 136 */
137 137
138 movi a1, 1 138 movi a1, LOCKLEVEL
139 wsr a1, ps 139 wsr a1, ps
140 rsync 140 rsync
141 141
@@ -211,7 +211,8 @@ ENTRY(_startup)
211 movi a1, init_thread_union 211 movi a1, init_thread_union
212 addi a1, a1, KERNEL_STACK_SIZE 212 addi a1, a1, KERNEL_STACK_SIZE
213 213
214 movi a2, 0x00040001 # WOE=1, INTLEVEL=1, UM=0 214 movi a2, (1 << PS_WOE_BIT) | LOCKLEVEL
215 # WOE=1, INTLEVEL=LOCKLEVEL, UM=0
215 wsr a2, ps # (enable reg-windows; progmode stack) 216 wsr a2, ps # (enable reg-windows; progmode stack)
216 rsync 217 rsync
217 218
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index 0dd5784416d3..5cd82e9f601c 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -259,9 +259,10 @@ int copy_thread(unsigned long clone_flags, unsigned long usp_thread_fn,
259 memcpy(&childregs->areg[XCHAL_NUM_AREGS - len/4], 259 memcpy(&childregs->areg[XCHAL_NUM_AREGS - len/4],
260 &regs->areg[XCHAL_NUM_AREGS - len/4], len); 260 &regs->areg[XCHAL_NUM_AREGS - len/4], len);
261 } 261 }
262// FIXME: we need to set THREADPTR in thread_info... 262
263 /* The thread pointer is passed in the '4th argument' (= a5) */
263 if (clone_flags & CLONE_SETTLS) 264 if (clone_flags & CLONE_SETTLS)
264 childregs->areg[2] = childregs->areg[6]; 265 childregs->threadptr = childregs->areg[5];
265 } else { 266 } else {
266 p->thread.ra = MAKE_RA_FOR_CALL( 267 p->thread.ra = MAKE_RA_FOR_CALL(
267 (unsigned long)ret_from_kernel_thread, 1); 268 (unsigned long)ret_from_kernel_thread, 1);
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index 61fb2e9e9035..562fac664751 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -53,9 +53,8 @@ int ptrace_getregs(struct task_struct *child, void __user *uregs)
53{ 53{
54 struct pt_regs *regs = task_pt_regs(child); 54 struct pt_regs *regs = task_pt_regs(child);
55 xtensa_gregset_t __user *gregset = uregs; 55 xtensa_gregset_t __user *gregset = uregs;
56 unsigned long wm = regs->wmask;
57 unsigned long wb = regs->windowbase; 56 unsigned long wb = regs->windowbase;
58 int live, i; 57 int i;
59 58
60 if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t))) 59 if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t)))
61 return -EIO; 60 return -EIO;
@@ -67,13 +66,11 @@ int ptrace_getregs(struct task_struct *child, void __user *uregs)
67 __put_user(regs->lcount, &gregset->lcount); 66 __put_user(regs->lcount, &gregset->lcount);
68 __put_user(regs->windowstart, &gregset->windowstart); 67 __put_user(regs->windowstart, &gregset->windowstart);
69 __put_user(regs->windowbase, &gregset->windowbase); 68 __put_user(regs->windowbase, &gregset->windowbase);
69 __put_user(regs->threadptr, &gregset->threadptr);
70 70
71 live = (wm & 2) ? 4 : (wm & 4) ? 8 : (wm & 8) ? 12 : 16; 71 for (i = 0; i < XCHAL_NUM_AREGS; i++)
72 72 __put_user(regs->areg[i],
73 for (i = 0; i < live; i++) 73 gregset->a + ((wb * 4 + i) % XCHAL_NUM_AREGS));
74 __put_user(regs->areg[i],gregset->a+((wb*4+i)%XCHAL_NUM_AREGS));
75 for (i = XCHAL_NUM_AREGS - (wm >> 4) * 4; i < XCHAL_NUM_AREGS; i++)
76 __put_user(regs->areg[i],gregset->a+((wb*4+i)%XCHAL_NUM_AREGS));
77 74
78 return 0; 75 return 0;
79} 76}
@@ -84,7 +81,7 @@ int ptrace_setregs(struct task_struct *child, void __user *uregs)
84 xtensa_gregset_t *gregset = uregs; 81 xtensa_gregset_t *gregset = uregs;
85 const unsigned long ps_mask = PS_CALLINC_MASK | PS_OWB_MASK; 82 const unsigned long ps_mask = PS_CALLINC_MASK | PS_OWB_MASK;
86 unsigned long ps; 83 unsigned long ps;
87 unsigned long wb; 84 unsigned long wb, ws;
88 85
89 if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t))) 86 if (!access_ok(VERIFY_WRITE, uregs, sizeof(xtensa_gregset_t)))
90 return -EIO; 87 return -EIO;
@@ -94,21 +91,33 @@ int ptrace_setregs(struct task_struct *child, void __user *uregs)
94 __get_user(regs->lbeg, &gregset->lbeg); 91 __get_user(regs->lbeg, &gregset->lbeg);
95 __get_user(regs->lend, &gregset->lend); 92 __get_user(regs->lend, &gregset->lend);
96 __get_user(regs->lcount, &gregset->lcount); 93 __get_user(regs->lcount, &gregset->lcount);
97 __get_user(regs->windowstart, &gregset->windowstart); 94 __get_user(ws, &gregset->windowstart);
98 __get_user(wb, &gregset->windowbase); 95 __get_user(wb, &gregset->windowbase);
96 __get_user(regs->threadptr, &gregset->threadptr);
99 97
100 regs->ps = (regs->ps & ~ps_mask) | (ps & ps_mask) | (1 << PS_EXCM_BIT); 98 regs->ps = (regs->ps & ~ps_mask) | (ps & ps_mask) | (1 << PS_EXCM_BIT);
101 99
102 if (wb >= XCHAL_NUM_AREGS / 4) 100 if (wb >= XCHAL_NUM_AREGS / 4)
103 return -EFAULT; 101 return -EFAULT;
104 102
105 regs->windowbase = wb; 103 if (wb != regs->windowbase || ws != regs->windowstart) {
104 unsigned long rotws, wmask;
105
106 rotws = (((ws | (ws << WSBITS)) >> wb) &
107 ((1 << WSBITS) - 1)) & ~1;
108 wmask = ((rotws ? WSBITS + 1 - ffs(rotws) : 0) << 4) |
109 (rotws & 0xF) | 1;
110 regs->windowbase = wb;
111 regs->windowstart = ws;
112 regs->wmask = wmask;
113 }
106 114
107 if (wb != 0 && __copy_from_user(regs->areg + XCHAL_NUM_AREGS - wb * 4, 115 if (wb != 0 && __copy_from_user(regs->areg + XCHAL_NUM_AREGS - wb * 4,
108 gregset->a, wb * 16)) 116 gregset->a, wb * 16))
109 return -EFAULT; 117 return -EFAULT;
110 118
111 if (__copy_from_user(regs->areg, gregset->a + wb*4, (WSBITS-wb) * 16)) 119 if (__copy_from_user(regs->areg, gregset->a + wb * 4,
120 (WSBITS - wb) * 16))
112 return -EFAULT; 121 return -EFAULT;
113 122
114 return 0; 123 return 0;
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 24c1a57abb40..6dd25ecde3f5 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -328,6 +328,27 @@ extern char _UserExceptionVector_literal_start;
328extern char _UserExceptionVector_text_end; 328extern char _UserExceptionVector_text_end;
329extern char _DoubleExceptionVector_literal_start; 329extern char _DoubleExceptionVector_literal_start;
330extern char _DoubleExceptionVector_text_end; 330extern char _DoubleExceptionVector_text_end;
331#if XCHAL_EXCM_LEVEL >= 2
332extern char _Level2InterruptVector_text_start;
333extern char _Level2InterruptVector_text_end;
334#endif
335#if XCHAL_EXCM_LEVEL >= 3
336extern char _Level3InterruptVector_text_start;
337extern char _Level3InterruptVector_text_end;
338#endif
339#if XCHAL_EXCM_LEVEL >= 4
340extern char _Level4InterruptVector_text_start;
341extern char _Level4InterruptVector_text_end;
342#endif
343#if XCHAL_EXCM_LEVEL >= 5
344extern char _Level5InterruptVector_text_start;
345extern char _Level5InterruptVector_text_end;
346#endif
347#if XCHAL_EXCM_LEVEL >= 6
348extern char _Level6InterruptVector_text_start;
349extern char _Level6InterruptVector_text_end;
350#endif
351
331 352
332 353
333#ifdef CONFIG_S32C1I_SELFTEST 354#ifdef CONFIG_S32C1I_SELFTEST
@@ -482,6 +503,27 @@ void __init setup_arch(char **cmdline_p)
482 mem_reserve(__pa(&_DoubleExceptionVector_literal_start), 503 mem_reserve(__pa(&_DoubleExceptionVector_literal_start),
483 __pa(&_DoubleExceptionVector_text_end), 0); 504 __pa(&_DoubleExceptionVector_text_end), 0);
484 505
506#if XCHAL_EXCM_LEVEL >= 2
507 mem_reserve(__pa(&_Level2InterruptVector_text_start),
508 __pa(&_Level2InterruptVector_text_end), 0);
509#endif
510#if XCHAL_EXCM_LEVEL >= 3
511 mem_reserve(__pa(&_Level3InterruptVector_text_start),
512 __pa(&_Level3InterruptVector_text_end), 0);
513#endif
514#if XCHAL_EXCM_LEVEL >= 4
515 mem_reserve(__pa(&_Level4InterruptVector_text_start),
516 __pa(&_Level4InterruptVector_text_end), 0);
517#endif
518#if XCHAL_EXCM_LEVEL >= 5
519 mem_reserve(__pa(&_Level5InterruptVector_text_start),
520 __pa(&_Level5InterruptVector_text_end), 0);
521#endif
522#if XCHAL_EXCM_LEVEL >= 6
523 mem_reserve(__pa(&_Level6InterruptVector_text_start),
524 __pa(&_Level6InterruptVector_text_end), 0);
525#endif
526
485 bootmem_init(); 527 bootmem_init();
486 528
487#ifdef CONFIG_OF 529#ifdef CONFIG_OF
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index d7590dddd084..718eca1850bd 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -337,7 +337,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
337 struct rt_sigframe *frame; 337 struct rt_sigframe *frame;
338 int err = 0; 338 int err = 0;
339 int signal; 339 int signal;
340 unsigned long sp, ra; 340 unsigned long sp, ra, tp;
341 341
342 sp = regs->areg[1]; 342 sp = regs->areg[1];
343 343
@@ -391,7 +391,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
391 * Return context not modified until this point. 391 * Return context not modified until this point.
392 */ 392 */
393 393
394 /* Set up registers for signal handler */ 394 /* Set up registers for signal handler; preserve the threadptr */
395 tp = regs->threadptr;
395 start_thread(regs, (unsigned long) ka->sa.sa_handler, 396 start_thread(regs, (unsigned long) ka->sa.sa_handler,
396 (unsigned long) frame); 397 (unsigned long) frame);
397 398
@@ -402,6 +403,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
402 regs->areg[6] = (unsigned long) signal; 403 regs->areg[6] = (unsigned long) signal;
403 regs->areg[7] = (unsigned long) &frame->info; 404 regs->areg[7] = (unsigned long) &frame->info;
404 regs->areg[8] = (unsigned long) &frame->uc; 405 regs->areg[8] = (unsigned long) &frame->uc;
406 regs->threadptr = tp;
405 407
406 /* Set access mode to USER_DS. Nomenclature is outdated, but 408 /* Set access mode to USER_DS. Nomenclature is outdated, but
407 * functionality is used in uaccess.h 409 * functionality is used in uaccess.h
diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c
index 54fa8425cee2..5d3f7a119ed1 100644
--- a/arch/xtensa/kernel/syscall.c
+++ b/arch/xtensa/kernel/syscall.c
@@ -36,6 +36,10 @@ syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= {
36#include <uapi/asm/unistd.h> 36#include <uapi/asm/unistd.h>
37}; 37};
38 38
39#define COLOUR_ALIGN(addr, pgoff) \
40 ((((addr) + SHMLBA - 1) & ~(SHMLBA - 1)) + \
41 (((pgoff) << PAGE_SHIFT) & (SHMLBA - 1)))
42
39asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg) 43asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg)
40{ 44{
41 unsigned long ret; 45 unsigned long ret;
@@ -52,3 +56,40 @@ asmlinkage long xtensa_fadvise64_64(int fd, int advice,
52{ 56{
53 return sys_fadvise64_64(fd, offset, len, advice); 57 return sys_fadvise64_64(fd, offset, len, advice);
54} 58}
59
60unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
61 unsigned long len, unsigned long pgoff, unsigned long flags)
62{
63 struct vm_area_struct *vmm;
64
65 if (flags & MAP_FIXED) {
66 /* We do not accept a shared mapping if it would violate
67 * cache aliasing constraints.
68 */
69 if ((flags & MAP_SHARED) &&
70 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
71 return -EINVAL;
72 return addr;
73 }
74
75 if (len > TASK_SIZE)
76 return -ENOMEM;
77 if (!addr)
78 addr = TASK_UNMAPPED_BASE;
79
80 if (flags & MAP_SHARED)
81 addr = COLOUR_ALIGN(addr, pgoff);
82 else
83 addr = PAGE_ALIGN(addr);
84
85 for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
86 /* At this point: (!vmm || addr < vmm->vm_end). */
87 if (TASK_SIZE - len < addr)
88 return -ENOMEM;
89 if (!vmm || addr + len <= vmm->vm_start)
90 return addr;
91 addr = vmm->vm_end;
92 if (flags & MAP_SHARED)
93 addr = COLOUR_ALIGN(addr, pgoff);
94 }
95}
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index ded955d45155..923db5c15278 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -37,6 +37,7 @@
37#include <asm/uaccess.h> 37#include <asm/uaccess.h>
38#include <asm/pgtable.h> 38#include <asm/pgtable.h>
39#include <asm/processor.h> 39#include <asm/processor.h>
40#include <asm/traps.h>
40 41
41#ifdef CONFIG_KGDB 42#ifdef CONFIG_KGDB
42extern int gdb_enter; 43extern int gdb_enter;
@@ -193,28 +194,49 @@ void do_multihit(struct pt_regs *regs, unsigned long exccause)
193} 194}
194 195
195/* 196/*
196 * Level-1 interrupt. 197 * IRQ handler.
197 * We currently have no priority encoding. 198 * PS.INTLEVEL is the current IRQ priority level.
198 */ 199 */
199 200
200unsigned long ignored_level1_interrupts;
201extern void do_IRQ(int, struct pt_regs *); 201extern void do_IRQ(int, struct pt_regs *);
202 202
203void do_interrupt (struct pt_regs *regs) 203void do_interrupt(struct pt_regs *regs)
204{ 204{
205 unsigned long intread = get_sr (interrupt); 205 static const unsigned int_level_mask[] = {
206 unsigned long intenable = get_sr (intenable); 206 0,
207 int i, mask; 207 XCHAL_INTLEVEL1_MASK,
208 208 XCHAL_INTLEVEL2_MASK,
209 /* Handle all interrupts (no priorities). 209 XCHAL_INTLEVEL3_MASK,
210 * (Clear the interrupt before processing, in case it's 210 XCHAL_INTLEVEL4_MASK,
211 * edge-triggered or software-generated) 211 XCHAL_INTLEVEL5_MASK,
212 */ 212 XCHAL_INTLEVEL6_MASK,
213 XCHAL_INTLEVEL7_MASK,
214 };
215 unsigned level = get_sr(ps) & PS_INTLEVEL_MASK;
216
217 if (WARN_ON_ONCE(level >= ARRAY_SIZE(int_level_mask)))
218 return;
213 219
214 for (i=0, mask = 1; i < XCHAL_NUM_INTERRUPTS; i++, mask <<= 1) { 220 for (;;) {
215 if (mask & (intread & intenable)) { 221 unsigned intread = get_sr(interrupt);
216 set_sr (mask, intclear); 222 unsigned intenable = get_sr(intenable);
217 do_IRQ (i,regs); 223 unsigned int_at_level = intread & intenable &
224 int_level_mask[level];
225
226 if (!int_at_level)
227 return;
228
229 /*
230 * Clear the interrupt before processing, in case it's
231 * edge-triggered or software-generated
232 */
233 while (int_at_level) {
234 unsigned i = __ffs(int_at_level);
235 unsigned mask = 1 << i;
236
237 int_at_level ^= mask;
238 set_sr(mask, intclear);
239 do_IRQ(i, regs);
218 } 240 }
219 } 241 }
220} 242}
@@ -392,26 +414,6 @@ static __always_inline unsigned long *stack_pointer(struct task_struct *task)
392 return sp; 414 return sp;
393} 415}
394 416
395static inline void spill_registers(void)
396{
397 unsigned int a0, ps;
398
399 __asm__ __volatile__ (
400 "movi a14, " __stringify(PS_EXCM_BIT | 1) "\n\t"
401 "mov a12, a0\n\t"
402 "rsr a13, sar\n\t"
403 "xsr a14, ps\n\t"
404 "movi a0, _spill_registers\n\t"
405 "rsync\n\t"
406 "callx0 a0\n\t"
407 "mov a0, a12\n\t"
408 "wsr a13, sar\n\t"
409 "wsr a14, ps\n\t"
410 :: "a" (&a0), "a" (&ps)
411 : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15",
412 "memory");
413}
414
415void show_trace(struct task_struct *task, unsigned long *sp) 417void show_trace(struct task_struct *task, unsigned long *sp)
416{ 418{
417 unsigned long a0, a1, pc; 419 unsigned long a0, a1, pc;
diff --git a/arch/xtensa/kernel/vectors.S b/arch/xtensa/kernel/vectors.S
index 68df35f66ce3..82109b42e240 100644
--- a/arch/xtensa/kernel/vectors.S
+++ b/arch/xtensa/kernel/vectors.S
@@ -10,7 +10,7 @@
10 * Public License. See the file "COPYING" in the main directory of 10 * Public License. See the file "COPYING" in the main directory of
11 * this archive for more details. 11 * this archive for more details.
12 * 12 *
13 * Copyright (C) 2005 Tensilica, Inc. 13 * Copyright (C) 2005 - 2008 Tensilica, Inc.
14 * 14 *
15 * Chris Zankel <chris@zankel.net> 15 * Chris Zankel <chris@zankel.net>
16 * 16 *
@@ -366,6 +366,41 @@ ENTRY(_DebugInterruptVector)
366ENDPROC(_DebugInterruptVector) 366ENDPROC(_DebugInterruptVector)
367 367
368 368
369
370/*
371 * Medium priority level interrupt vectors
372 *
373 * Each takes less than 16 (0x10) bytes, no literals, by placing
374 * the extra 8 bytes that would otherwise be required in the window
375 * vectors area where there is space. With relocatable vectors,
376 * all vectors are within ~ 4 kB range of each other, so we can
377 * simply jump (J) to another vector without having to use JX.
378 *
379 * common_exception code gets current IRQ level in PS.INTLEVEL
380 * and preserves it for the IRQ handling time.
381 */
382
383 .macro irq_entry_level level
384
385 .if XCHAL_EXCM_LEVEL >= \level
386 .section .Level\level\()InterruptVector.text, "ax"
387ENTRY(_Level\level\()InterruptVector)
388 wsr a0, epc1
389 rsr a0, epc\level
390 xsr a0, epc1
391 # branch to user or kernel vector
392 j _SimulateUserKernelVectorException
393 .endif
394
395 .endm
396
397 irq_entry_level 2
398 irq_entry_level 3
399 irq_entry_level 4
400 irq_entry_level 5
401 irq_entry_level 6
402
403
369/* Window overflow and underflow handlers. 404/* Window overflow and underflow handlers.
370 * The handlers must be 64 bytes apart, first starting with the underflow 405 * The handlers must be 64 bytes apart, first starting with the underflow
371 * handlers underflow-4 to underflow-12, then the overflow handlers 406 * handlers underflow-4 to underflow-12, then the overflow handlers
@@ -396,6 +431,26 @@ ENTRY_ALIGN64(_WindowOverflow4)
396ENDPROC(_WindowOverflow4) 431ENDPROC(_WindowOverflow4)
397 432
398 433
434#if XCHAL_EXCM_LEVEL >= 2
435 /* Not a window vector - but a convenient location
436 * (where we know there's space) for continuation of
437 * medium priority interrupt dispatch code.
438 * On entry here, a0 contains PS, and EPC2 contains saved a0:
439 */
440 .align 4
441_SimulateUserKernelVectorException:
442 wsr a0, excsave2
443 movi a0, 4 # LEVEL1_INTERRUPT cause
444 wsr a0, exccause
445 rsr a0, ps
446 bbsi.l a0, PS_UM_BIT, 1f # branch if user mode
447 rsr a0, excsave2 # restore a0
448 j _KernelExceptionVector # simulate kernel vector exception
4491: rsr a0, excsave2 # restore a0
450 j _UserExceptionVector # simulate user vector exception
451#endif
452
453
399/* 4-Register Window Underflow Vector (Handler) */ 454/* 4-Register Window Underflow Vector (Handler) */
400 455
401ENTRY_ALIGN64(_WindowUnderflow4) 456ENTRY_ALIGN64(_WindowUnderflow4)
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 255154f820b7..14695240536d 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -7,7 +7,7 @@
7 * License. See the file "COPYING" in the main directory of this archive 7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details. 8 * for more details.
9 * 9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc. 10 * Copyright (C) 2001 - 2008 Tensilica Inc.
11 * 11 *
12 * Chris Zankel <chris@zankel.net> 12 * Chris Zankel <chris@zankel.net>
13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca> 13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
@@ -134,6 +134,26 @@ SECTIONS
134 134
135 RELOCATE_ENTRY(_WindowVectors_text, 135 RELOCATE_ENTRY(_WindowVectors_text,
136 .WindowVectors.text); 136 .WindowVectors.text);
137#if XCHAL_EXCM_LEVEL >= 2
138 RELOCATE_ENTRY(_Level2InterruptVector_text,
139 .Level2InterruptVector.text);
140#endif
141#if XCHAL_EXCM_LEVEL >= 3
142 RELOCATE_ENTRY(_Level3InterruptVector_text,
143 .Level3InterruptVector.text);
144#endif
145#if XCHAL_EXCM_LEVEL >= 4
146 RELOCATE_ENTRY(_Level4InterruptVector_text,
147 .Level4InterruptVector.text);
148#endif
149#if XCHAL_EXCM_LEVEL >= 5
150 RELOCATE_ENTRY(_Level5InterruptVector_text,
151 .Level5InterruptVector.text);
152#endif
153#if XCHAL_EXCM_LEVEL >= 6
154 RELOCATE_ENTRY(_Level6InterruptVector_text,
155 .Level6InterruptVector.text);
156#endif
137 RELOCATE_ENTRY(_KernelExceptionVector_text, 157 RELOCATE_ENTRY(_KernelExceptionVector_text,
138 .KernelExceptionVector.text); 158 .KernelExceptionVector.text);
139 RELOCATE_ENTRY(_UserExceptionVector_text, 159 RELOCATE_ENTRY(_UserExceptionVector_text,
@@ -177,11 +197,53 @@ SECTIONS
177 XCHAL_DEBUG_VECTOR_VADDR, 197 XCHAL_DEBUG_VECTOR_VADDR,
178 4, 198 4,
179 .DebugInterruptVector.literal) 199 .DebugInterruptVector.literal)
200#undef LAST
201#define LAST .DebugInterruptVector.text
202#if XCHAL_EXCM_LEVEL >= 2
203 SECTION_VECTOR (_Level2InterruptVector_text,
204 .Level2InterruptVector.text,
205 XCHAL_INTLEVEL2_VECTOR_VADDR,
206 SIZEOF(LAST), LAST)
207# undef LAST
208# define LAST .Level2InterruptVector.text
209#endif
210#if XCHAL_EXCM_LEVEL >= 3
211 SECTION_VECTOR (_Level3InterruptVector_text,
212 .Level3InterruptVector.text,
213 XCHAL_INTLEVEL3_VECTOR_VADDR,
214 SIZEOF(LAST), LAST)
215# undef LAST
216# define LAST .Level3InterruptVector.text
217#endif
218#if XCHAL_EXCM_LEVEL >= 4
219 SECTION_VECTOR (_Level4InterruptVector_text,
220 .Level4InterruptVector.text,
221 XCHAL_INTLEVEL4_VECTOR_VADDR,
222 SIZEOF(LAST), LAST)
223# undef LAST
224# define LAST .Level4InterruptVector.text
225#endif
226#if XCHAL_EXCM_LEVEL >= 5
227 SECTION_VECTOR (_Level5InterruptVector_text,
228 .Level5InterruptVector.text,
229 XCHAL_INTLEVEL5_VECTOR_VADDR,
230 SIZEOF(LAST), LAST)
231# undef LAST
232# define LAST .Level5InterruptVector.text
233#endif
234#if XCHAL_EXCM_LEVEL >= 6
235 SECTION_VECTOR (_Level6InterruptVector_text,
236 .Level6InterruptVector.text,
237 XCHAL_INTLEVEL6_VECTOR_VADDR,
238 SIZEOF(LAST), LAST)
239# undef LAST
240# define LAST .Level6InterruptVector.text
241#endif
180 SECTION_VECTOR (_KernelExceptionVector_literal, 242 SECTION_VECTOR (_KernelExceptionVector_literal,
181 .KernelExceptionVector.literal, 243 .KernelExceptionVector.literal,
182 XCHAL_KERNEL_VECTOR_VADDR - 4, 244 XCHAL_KERNEL_VECTOR_VADDR - 4,
183 SIZEOF(.DebugInterruptVector.text), 245 SIZEOF(LAST), LAST)
184 .DebugInterruptVector.text) 246#undef LAST
185 SECTION_VECTOR (_KernelExceptionVector_text, 247 SECTION_VECTOR (_KernelExceptionVector_text,
186 .KernelExceptionVector.text, 248 .KernelExceptionVector.text,
187 XCHAL_KERNEL_VECTOR_VADDR, 249 XCHAL_KERNEL_VECTOR_VADDR,
diff --git a/arch/xtensa/oprofile/Makefile b/arch/xtensa/oprofile/Makefile
new file mode 100644
index 000000000000..69ffbe80f184
--- /dev/null
+++ b/arch/xtensa/oprofile/Makefile
@@ -0,0 +1,9 @@
1obj-$(CONFIG_OPROFILE) += oprofile.o
2
3DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
4 oprof.o cpu_buffer.o buffer_sync.o \
5 event_buffer.o oprofile_files.o \
6 oprofilefs.o oprofile_stats.o \
7 timer_int.o )
8
9oprofile-y := $(DRIVER_OBJS) init.o backtrace.o
diff --git a/arch/xtensa/oprofile/backtrace.c b/arch/xtensa/oprofile/backtrace.c
new file mode 100644
index 000000000000..66f32ee2c982
--- /dev/null
+++ b/arch/xtensa/oprofile/backtrace.c
@@ -0,0 +1,171 @@
1/**
2 * @file backtrace.c
3 *
4 * @remark Copyright 2008 Tensilica Inc.
5 * @remark Read the file COPYING
6 *
7 */
8
9#include <linux/oprofile.h>
10#include <linux/sched.h>
11#include <linux/mm.h>
12#include <asm/ptrace.h>
13#include <asm/uaccess.h>
14#include <asm/traps.h>
15
16/* Address of common_exception_return, used to check the
17 * transition from kernel to user space.
18 */
19extern int common_exception_return;
20
21/* A struct that maps to the part of the frame containing the a0 and
22 * a1 registers.
23 */
24struct frame_start {
25 unsigned long a0;
26 unsigned long a1;
27};
28
29static void xtensa_backtrace_user(struct pt_regs *regs, unsigned int depth)
30{
31 unsigned long windowstart = regs->windowstart;
32 unsigned long windowbase = regs->windowbase;
33 unsigned long a0 = regs->areg[0];
34 unsigned long a1 = regs->areg[1];
35 unsigned long pc = MAKE_PC_FROM_RA(a0, regs->pc);
36 int index;
37
38 /* First add the current PC to the trace. */
39 if (pc != 0 && pc <= TASK_SIZE)
40 oprofile_add_trace(pc);
41 else
42 return;
43
44 /* Two steps:
45 *
46 * 1. Look through the register window for the
47 * previous PCs in the call trace.
48 *
49 * 2. Look on the stack.
50 */
51
52 /* Step 1. */
53 /* Rotate WINDOWSTART to move the bit corresponding to
54 * the current window to the bit #0.
55 */
56 windowstart = (windowstart << WSBITS | windowstart) >> windowbase;
57
58 /* Look for bits that are set, they correspond to
59 * valid windows.
60 */
61 for (index = WSBITS - 1; (index > 0) && depth; depth--, index--)
62 if (windowstart & (1 << index)) {
63 /* Read a0 and a1 from the
64 * corresponding position in AREGs.
65 */
66 a0 = regs->areg[index * 4];
67 a1 = regs->areg[index * 4 + 1];
68 /* Get the PC from a0 and a1. */
69 pc = MAKE_PC_FROM_RA(a0, pc);
70
71 /* Add the PC to the trace. */
72 if (pc != 0 && pc <= TASK_SIZE)
73 oprofile_add_trace(pc);
74 else
75 return;
76 }
77
78 /* Step 2. */
79 /* We are done with the register window, we need to
80 * look through the stack.
81 */
82 if (depth > 0) {
83 /* Start from the a1 register. */
84 /* a1 = regs->areg[1]; */
85 while (a0 != 0 && depth--) {
86
87 struct frame_start frame_start;
88 /* Get the location for a1, a0 for the
89 * previous frame from the current a1.
90 */
91 unsigned long *psp = (unsigned long *)a1;
92 psp -= 4;
93
94 /* Check if the region is OK to access. */
95 if (!access_ok(VERIFY_READ, psp, sizeof(frame_start)))
96 return;
97 /* Copy a1, a0 from user space stack frame. */
98 if (__copy_from_user_inatomic(&frame_start, psp,
99 sizeof(frame_start)))
100 return;
101
102 a0 = frame_start.a0;
103 a1 = frame_start.a1;
104 pc = MAKE_PC_FROM_RA(a0, pc);
105
106 if (pc != 0 && pc <= TASK_SIZE)
107 oprofile_add_trace(pc);
108 else
109 return;
110 }
111 }
112}
113
114static void xtensa_backtrace_kernel(struct pt_regs *regs, unsigned int depth)
115{
116 unsigned long pc = regs->pc;
117 unsigned long *psp;
118 unsigned long sp_start, sp_end;
119 unsigned long a0 = regs->areg[0];
120 unsigned long a1 = regs->areg[1];
121
122 sp_start = a1 & ~(THREAD_SIZE-1);
123 sp_end = sp_start + THREAD_SIZE;
124
125 /* Spill the register window to the stack first. */
126 spill_registers();
127
128 /* Read the stack frames one by one and create the PC
129 * from the a0 and a1 registers saved there.
130 */
131 while (a1 > sp_start && a1 < sp_end && depth--) {
132 pc = MAKE_PC_FROM_RA(a0, pc);
133
134 /* Add the PC to the trace. */
135 if (kernel_text_address(pc))
136 oprofile_add_trace(pc);
137
138 if (pc == (unsigned long) &common_exception_return) {
139 regs = (struct pt_regs *)a1;
140 if (user_mode(regs)) {
141 pc = regs->pc;
142 if (pc != 0 && pc <= TASK_SIZE)
143 oprofile_add_trace(pc);
144 else
145 return;
146 return xtensa_backtrace_user(regs, depth);
147 }
148 a0 = regs->areg[0];
149 a1 = regs->areg[1];
150 continue;
151 }
152
153 psp = (unsigned long *)a1;
154
155 a0 = *(psp - 4);
156 a1 = *(psp - 3);
157
158 if (a1 <= (unsigned long)psp)
159 return;
160
161 }
162 return;
163}
164
165void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
166{
167 if (user_mode(regs))
168 xtensa_backtrace_user(regs, depth);
169 else
170 xtensa_backtrace_kernel(regs, depth);
171}
diff --git a/arch/xtensa/oprofile/init.c b/arch/xtensa/oprofile/init.c
new file mode 100644
index 000000000000..a67eea379766
--- /dev/null
+++ b/arch/xtensa/oprofile/init.c
@@ -0,0 +1,26 @@
1/**
2 * @file init.c
3 *
4 * @remark Copyright 2008 Tensilica Inc.
5 * @remark Read the file COPYING
6 *
7 */
8
9#include <linux/kernel.h>
10#include <linux/oprofile.h>
11#include <linux/errno.h>
12#include <linux/init.h>
13
14
15extern void xtensa_backtrace(struct pt_regs *const regs, unsigned int depth);
16
17int __init oprofile_arch_init(struct oprofile_operations *ops)
18{
19 ops->backtrace = xtensa_backtrace;
20 return -ENODEV;
21}
22
23
24void oprofile_arch_exit(void)
25{
26}
diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile
index b7d1a5c0ff7f..d2369b799c50 100644
--- a/arch/xtensa/platforms/iss/Makefile
+++ b/arch/xtensa/platforms/iss/Makefile
@@ -6,3 +6,4 @@
6 6
7obj-y = console.o setup.o 7obj-y = console.o setup.o
8obj-$(CONFIG_NET) += network.o 8obj-$(CONFIG_NET) += network.o
9obj-$(CONFIG_BLK_DEV_SIMDISK) += simdisk.o
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
new file mode 100644
index 000000000000..f58ffc3b68a8
--- /dev/null
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -0,0 +1,375 @@
1/*
2 * arch/xtensa/platforms/iss/simdisk.c
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001-2013 Tensilica Inc.
9 * Authors Victor Prupis
10 */
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/string.h>
17#include <linux/blkdev.h>
18#include <linux/bio.h>
19#include <linux/proc_fs.h>
20#include <asm/uaccess.h>
21#include <platform/simcall.h>
22
23#define SIMDISK_MAJOR 240
24#define SECTOR_SHIFT 9
25#define SIMDISK_MINORS 1
26#define MAX_SIMDISK_COUNT 10
27
28struct simdisk {
29 const char *filename;
30 spinlock_t lock;
31 struct request_queue *queue;
32 struct gendisk *gd;
33 struct proc_dir_entry *procfile;
34 int users;
35 unsigned long size;
36 int fd;
37};
38
39
40static int simdisk_count = CONFIG_BLK_DEV_SIMDISK_COUNT;
41module_param(simdisk_count, int, S_IRUGO);
42MODULE_PARM_DESC(simdisk_count, "Number of simdisk units.");
43
44static int n_files;
45static const char *filename[MAX_SIMDISK_COUNT] = {
46#ifdef CONFIG_SIMDISK0_FILENAME
47 CONFIG_SIMDISK0_FILENAME,
48#ifdef CONFIG_SIMDISK1_FILENAME
49 CONFIG_SIMDISK1_FILENAME,
50#endif
51#endif
52};
53
54static int simdisk_param_set_filename(const char *val,
55 const struct kernel_param *kp)
56{
57 if (n_files < ARRAY_SIZE(filename))
58 filename[n_files++] = val;
59 else
60 return -EINVAL;
61 return 0;
62}
63
64static const struct kernel_param_ops simdisk_param_ops_filename = {
65 .set = simdisk_param_set_filename,
66};
67module_param_cb(filename, &simdisk_param_ops_filename, &n_files, 0);
68MODULE_PARM_DESC(filename, "Backing storage filename.");
69
70static int simdisk_major = SIMDISK_MAJOR;
71
72static void simdisk_transfer(struct simdisk *dev, unsigned long sector,
73 unsigned long nsect, char *buffer, int write)
74{
75 unsigned long offset = sector << SECTOR_SHIFT;
76 unsigned long nbytes = nsect << SECTOR_SHIFT;
77
78 if (offset > dev->size || dev->size - offset < nbytes) {
79 pr_notice("Beyond-end %s (%ld %ld)\n",
80 write ? "write" : "read", offset, nbytes);
81 return;
82 }
83
84 spin_lock(&dev->lock);
85 while (nbytes > 0) {
86 unsigned long io;
87
88 __simc(SYS_lseek, dev->fd, offset, SEEK_SET, 0, 0);
89 if (write)
90 io = simc_write(dev->fd, buffer, nbytes);
91 else
92 io = simc_read(dev->fd, buffer, nbytes);
93 if (io == -1) {
94 pr_err("SIMDISK: IO error %d\n", errno);
95 break;
96 }
97 buffer += io;
98 offset += io;
99 nbytes -= io;
100 }
101 spin_unlock(&dev->lock);
102}
103
104static int simdisk_xfer_bio(struct simdisk *dev, struct bio *bio)
105{
106 int i;
107 struct bio_vec *bvec;
108 sector_t sector = bio->bi_sector;
109
110 bio_for_each_segment(bvec, bio, i) {
111 char *buffer = __bio_kmap_atomic(bio, i, KM_USER0);
112 unsigned len = bvec->bv_len >> SECTOR_SHIFT;
113
114 simdisk_transfer(dev, sector, len, buffer,
115 bio_data_dir(bio) == WRITE);
116 sector += len;
117 __bio_kunmap_atomic(bio, KM_USER0);
118 }
119 return 0;
120}
121
122static void simdisk_make_request(struct request_queue *q, struct bio *bio)
123{
124 struct simdisk *dev = q->queuedata;
125 int status = simdisk_xfer_bio(dev, bio);
126 bio_endio(bio, status);
127}
128
129
130static int simdisk_open(struct block_device *bdev, fmode_t mode)
131{
132 struct simdisk *dev = bdev->bd_disk->private_data;
133
134 spin_lock(&dev->lock);
135 if (!dev->users)
136 check_disk_change(bdev);
137 ++dev->users;
138 spin_unlock(&dev->lock);
139 return 0;
140}
141
142static int simdisk_release(struct gendisk *disk, fmode_t mode)
143{
144 struct simdisk *dev = disk->private_data;
145 spin_lock(&dev->lock);
146 --dev->users;
147 spin_unlock(&dev->lock);
148 return 0;
149}
150
151static const struct block_device_operations simdisk_ops = {
152 .owner = THIS_MODULE,
153 .open = simdisk_open,
154 .release = simdisk_release,
155};
156
157static struct simdisk *sddev;
158static struct proc_dir_entry *simdisk_procdir;
159
160static int simdisk_attach(struct simdisk *dev, const char *filename)
161{
162 int err = 0;
163
164 filename = kstrdup(filename, GFP_KERNEL);
165 if (filename == NULL)
166 return -ENOMEM;
167
168 spin_lock(&dev->lock);
169
170 if (dev->fd != -1) {
171 err = -EBUSY;
172 goto out;
173 }
174 dev->fd = simc_open(filename, O_RDWR, 0);
175 if (dev->fd == -1) {
176 pr_err("SIMDISK: Can't open %s: %d\n", filename, errno);
177 err = -ENODEV;
178 goto out;
179 }
180 dev->size = __simc(SYS_lseek, dev->fd, 0, SEEK_END, 0, 0);
181 set_capacity(dev->gd, dev->size >> SECTOR_SHIFT);
182 dev->filename = filename;
183 pr_info("SIMDISK: %s=%s\n", dev->gd->disk_name, dev->filename);
184out:
185 if (err)
186 kfree(filename);
187 spin_unlock(&dev->lock);
188
189 return err;
190}
191
192static int simdisk_detach(struct simdisk *dev)
193{
194 int err = 0;
195
196 spin_lock(&dev->lock);
197
198 if (dev->users != 0) {
199 err = -EBUSY;
200 } else if (dev->fd != -1) {
201 if (simc_close(dev->fd)) {
202 pr_err("SIMDISK: error closing %s: %d\n",
203 dev->filename, errno);
204 err = -EIO;
205 } else {
206 pr_info("SIMDISK: %s detached from %s\n",
207 dev->gd->disk_name, dev->filename);
208 dev->fd = -1;
209 kfree(dev->filename);
210 dev->filename = NULL;
211 }
212 }
213 spin_unlock(&dev->lock);
214 return err;
215}
216
217static int proc_read_simdisk(char *page, char **start, off_t off,
218 int count, int *eof, void *data)
219{
220 int len;
221 struct simdisk *dev = (struct simdisk *) data;
222 len = sprintf(page, "%s\n", dev->filename ? dev->filename : "");
223 return len;
224}
225
226static int proc_write_simdisk(struct file *file, const char *buffer,
227 unsigned long count, void *data)
228{
229 char *tmp = kmalloc(count + 1, GFP_KERNEL);
230 struct simdisk *dev = (struct simdisk *) data;
231 int err;
232
233 if (tmp == NULL)
234 return -ENOMEM;
235 if (copy_from_user(tmp, buffer, count)) {
236 err = -EFAULT;
237 goto out_free;
238 }
239
240 err = simdisk_detach(dev);
241 if (err != 0)
242 goto out_free;
243
244 if (count > 0 && tmp[count - 1] == '\n')
245 tmp[count - 1] = 0;
246 else
247 tmp[count] = 0;
248
249 if (tmp[0])
250 err = simdisk_attach(dev, tmp);
251
252 if (err == 0)
253 err = count;
254out_free:
255 kfree(tmp);
256 return err;
257}
258
259static int __init simdisk_setup(struct simdisk *dev, int which,
260 struct proc_dir_entry *procdir)
261{
262 char tmp[2] = { '0' + which, 0 };
263
264 dev->fd = -1;
265 dev->filename = NULL;
266 spin_lock_init(&dev->lock);
267 dev->users = 0;
268
269 dev->queue = blk_alloc_queue(GFP_KERNEL);
270 if (dev->queue == NULL) {
271 pr_err("blk_alloc_queue failed\n");
272 goto out_alloc_queue;
273 }
274
275 blk_queue_make_request(dev->queue, simdisk_make_request);
276 dev->queue->queuedata = dev;
277
278 dev->gd = alloc_disk(SIMDISK_MINORS);
279 if (dev->gd == NULL) {
280 pr_err("alloc_disk failed\n");
281 goto out_alloc_disk;
282 }
283 dev->gd->major = simdisk_major;
284 dev->gd->first_minor = which;
285 dev->gd->fops = &simdisk_ops;
286 dev->gd->queue = dev->queue;
287 dev->gd->private_data = dev;
288 snprintf(dev->gd->disk_name, 32, "simdisk%d", which);
289 set_capacity(dev->gd, 0);
290 add_disk(dev->gd);
291
292 dev->procfile = create_proc_entry(tmp, 0644, procdir);
293 dev->procfile->data = dev;
294 dev->procfile->read_proc = proc_read_simdisk;
295 dev->procfile->write_proc = proc_write_simdisk;
296 return 0;
297
298out_alloc_disk:
299 blk_cleanup_queue(dev->queue);
300 dev->queue = NULL;
301out_alloc_queue:
302 simc_close(dev->fd);
303 return -EIO;
304}
305
306static int __init simdisk_init(void)
307{
308 int i;
309
310 if (register_blkdev(simdisk_major, "simdisk") < 0) {
311 pr_err("SIMDISK: register_blkdev: %d\n", simdisk_major);
312 return -EIO;
313 }
314 pr_info("SIMDISK: major: %d\n", simdisk_major);
315
316 if (n_files > simdisk_count)
317 simdisk_count = n_files;
318 if (simdisk_count > MAX_SIMDISK_COUNT)
319 simdisk_count = MAX_SIMDISK_COUNT;
320
321 sddev = kmalloc(simdisk_count * sizeof(struct simdisk),
322 GFP_KERNEL);
323 if (sddev == NULL)
324 goto out_unregister;
325
326 simdisk_procdir = proc_mkdir("simdisk", 0);
327 if (simdisk_procdir == NULL)
328 goto out_free_unregister;
329
330 for (i = 0; i < simdisk_count; ++i) {
331 if (simdisk_setup(sddev + i, i, simdisk_procdir) == 0) {
332 if (filename[i] != NULL && filename[i][0] != 0 &&
333 (n_files == 0 || i < n_files))
334 simdisk_attach(sddev + i, filename[i]);
335 }
336 }
337
338 return 0;
339
340out_free_unregister:
341 kfree(sddev);
342out_unregister:
343 unregister_blkdev(simdisk_major, "simdisk");
344 return -ENOMEM;
345}
346module_init(simdisk_init);
347
348static void simdisk_teardown(struct simdisk *dev, int which,
349 struct proc_dir_entry *procdir)
350{
351 char tmp[2] = { '0' + which, 0 };
352
353 simdisk_detach(dev);
354 if (dev->gd)
355 del_gendisk(dev->gd);
356 if (dev->queue)
357 blk_cleanup_queue(dev->queue);
358 remove_proc_entry(tmp, procdir);
359}
360
361static void __exit simdisk_exit(void)
362{
363 int i;
364
365 for (i = 0; i < simdisk_count; ++i)
366 simdisk_teardown(sddev + i, i, simdisk_procdir);
367 remove_proc_entry("simdisk", 0);
368 kfree(sddev);
369 unregister_blkdev(simdisk_major, "simdisk");
370}
371module_exit(simdisk_exit);
372
373MODULE_ALIAS_BLOCKDEV_MAJOR(SIMDISK_MAJOR);
374
375MODULE_LICENSE("GPL");
diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
index 4b9951a4569d..9d888a2a5755 100644
--- a/arch/xtensa/platforms/xtfpga/setup.c
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -100,7 +100,7 @@ static void __init update_clock_frequency(struct device_node *node)
100 } 100 }
101 101
102 *(u32 *)newfreq->value = cpu_to_be32(*(u32 *)XTFPGA_CLKFRQ_VADDR); 102 *(u32 *)newfreq->value = cpu_to_be32(*(u32 *)XTFPGA_CLKFRQ_VADDR);
103 prom_update_property(node, newfreq); 103 of_update_property(node, newfreq);
104} 104}
105 105
106#define MAC_LEN 6 106#define MAC_LEN 6
@@ -128,7 +128,7 @@ static void __init update_local_mac(struct device_node *node)
128 128
129 memcpy(newmac->value, macaddr, MAC_LEN); 129 memcpy(newmac->value, macaddr, MAC_LEN);
130 ((u8*)newmac->value)[5] = (*(u32*)DIP_SWITCHES_VADDR) & 0x3f; 130 ((u8*)newmac->value)[5] = (*(u32*)DIP_SWITCHES_VADDR) & 0x3f;
131 prom_update_property(node, newmac); 131 of_update_property(node, newmac);
132} 132}
133 133
134static int __init machine_setup(void) 134static int __init machine_setup(void)
diff --git a/arch/xtensa/variants/dc233c/include/variant/core.h b/arch/xtensa/variants/dc233c/include/variant/core.h
new file mode 100644
index 000000000000..3a2e53b94930
--- /dev/null
+++ b/arch/xtensa/variants/dc233c/include/variant/core.h
@@ -0,0 +1,475 @@
1/*
2 * xtensa/config/core-isa.h -- HAL definitions that are dependent on Xtensa
3 * processor CORE configuration
4 *
5 * See <xtensa/config/core.h>, which includes this file, for more details.
6 */
7
8/* Xtensa processor core configuration information.
9
10 Copyright (c) 1999-2010 Tensilica Inc.
11
12 Permission is hereby granted, free of charge, to any person obtaining
13 a copy of this software and associated documentation files (the
14 "Software"), to deal in the Software without restriction, including
15 without limitation the rights to use, copy, modify, merge, publish,
16 distribute, sublicense, and/or sell copies of the Software, and to
17 permit persons to whom the Software is furnished to do so, subject to
18 the following conditions:
19
20 The above copyright notice and this permission notice shall be included
21 in all copies or substantial portions of the Software.
22
23 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
26 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
27 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
28 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
29 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
30
31#ifndef _XTENSA_CORE_CONFIGURATION_H
32#define _XTENSA_CORE_CONFIGURATION_H
33
34
35/****************************************************************************
36 Parameters Useful for Any Code, USER or PRIVILEGED
37 ****************************************************************************/
38
39/*
40 * Note: Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
41 * configured, and a value of 0 otherwise. These macros are always defined.
42 */
43
44
45/*----------------------------------------------------------------------
46 ISA
47 ----------------------------------------------------------------------*/
48
49#define XCHAL_HAVE_BE 0 /* big-endian byte ordering */
50#define XCHAL_HAVE_WINDOWED 1 /* windowed registers option */
51#define XCHAL_NUM_AREGS 32 /* num of physical addr regs */
52#define XCHAL_NUM_AREGS_LOG2 5 /* log2(XCHAL_NUM_AREGS) */
53#define XCHAL_MAX_INSTRUCTION_SIZE 3 /* max instr bytes (3..8) */
54#define XCHAL_HAVE_DEBUG 1 /* debug option */
55#define XCHAL_HAVE_DENSITY 1 /* 16-bit instructions */
56#define XCHAL_HAVE_LOOPS 1 /* zero-overhead loops */
57#define XCHAL_HAVE_NSA 1 /* NSA/NSAU instructions */
58#define XCHAL_HAVE_MINMAX 1 /* MIN/MAX instructions */
59#define XCHAL_HAVE_SEXT 1 /* SEXT instruction */
60#define XCHAL_HAVE_CLAMPS 1 /* CLAMPS instruction */
61#define XCHAL_HAVE_MUL16 1 /* MUL16S/MUL16U instructions */
62#define XCHAL_HAVE_MUL32 1 /* MULL instruction */
63#define XCHAL_HAVE_MUL32_HIGH 0 /* MULUH/MULSH instructions */
64#define XCHAL_HAVE_DIV32 1 /* QUOS/QUOU/REMS/REMU instructions */
65#define XCHAL_HAVE_L32R 1 /* L32R instruction */
66#define XCHAL_HAVE_ABSOLUTE_LITERALS 1 /* non-PC-rel (extended) L32R */
67#define XCHAL_HAVE_CONST16 0 /* CONST16 instruction */
68#define XCHAL_HAVE_ADDX 1 /* ADDX#/SUBX# instructions */
69#define XCHAL_HAVE_WIDE_BRANCHES 0 /* B*.W18 or B*.W15 instr's */
70#define XCHAL_HAVE_PREDICTED_BRANCHES 0 /* B[EQ/EQZ/NE/NEZ]T instr's */
71#define XCHAL_HAVE_CALL4AND12 1 /* (obsolete option) */
72#define XCHAL_HAVE_ABS 1 /* ABS instruction */
73/*#define XCHAL_HAVE_POPC 0*/ /* POPC instruction */
74/*#define XCHAL_HAVE_CRC 0*/ /* CRC instruction */
75#define XCHAL_HAVE_RELEASE_SYNC 1 /* L32AI/S32RI instructions */
76#define XCHAL_HAVE_S32C1I 1 /* S32C1I instruction */
77#define XCHAL_HAVE_SPECULATION 0 /* speculation */
78#define XCHAL_HAVE_FULL_RESET 1 /* all regs/state reset */
79#define XCHAL_NUM_CONTEXTS 1 /* */
80#define XCHAL_NUM_MISC_REGS 2 /* num of scratch regs (0..4) */
81#define XCHAL_HAVE_TAP_MASTER 0 /* JTAG TAP control instr's */
82#define XCHAL_HAVE_PRID 1 /* processor ID register */
83#define XCHAL_HAVE_EXTERN_REGS 1 /* WER/RER instructions */
84#define XCHAL_HAVE_MP_INTERRUPTS 0 /* interrupt distributor port */
85#define XCHAL_HAVE_MP_RUNSTALL 0 /* core RunStall control port */
86#define XCHAL_HAVE_THREADPTR 1 /* THREADPTR register */
87#define XCHAL_HAVE_BOOLEANS 0 /* boolean registers */
88#define XCHAL_HAVE_CP 1 /* CPENABLE reg (coprocessor) */
89#define XCHAL_CP_MAXCFG 8 /* max allowed cp id plus one */
90#define XCHAL_HAVE_MAC16 1 /* MAC16 package */
91#define XCHAL_HAVE_VECTORFPU2005 0 /* vector floating-point pkg */
92#define XCHAL_HAVE_FP 0 /* floating point pkg */
93#define XCHAL_HAVE_DFP 0 /* double precision FP pkg */
94#define XCHAL_HAVE_DFP_accel 0 /* double precision FP acceleration pkg */
95#define XCHAL_HAVE_VECTRA1 0 /* Vectra I pkg */
96#define XCHAL_HAVE_VECTRALX 0 /* Vectra LX pkg */
97#define XCHAL_HAVE_HIFIPRO 0 /* HiFiPro Audio Engine pkg */
98#define XCHAL_HAVE_HIFI2 0 /* HiFi2 Audio Engine pkg */
99#define XCHAL_HAVE_HIFI2EP 0 /* HiFi2EP */
100#define XCHAL_HAVE_CONNXD2 0 /* ConnX D2 pkg */
101#define XCHAL_HAVE_BBE16 0 /* ConnX BBE16 pkg */
102#define XCHAL_HAVE_BBE16_RSQRT 0 /* BBE16 & vector recip sqrt */
103#define XCHAL_HAVE_BBE16_VECDIV 0 /* BBE16 & vector divide */
104#define XCHAL_HAVE_BBE16_DESPREAD 0 /* BBE16 & despread */
105#define XCHAL_HAVE_BSP3 0 /* ConnX BSP3 pkg */
106#define XCHAL_HAVE_SSP16 0 /* ConnX SSP16 pkg */
107#define XCHAL_HAVE_SSP16_VITERBI 0 /* SSP16 & viterbi */
108#define XCHAL_HAVE_TURBO16 0 /* ConnX Turbo16 pkg */
109#define XCHAL_HAVE_BBP16 0 /* ConnX BBP16 pkg */
110
111
112/*----------------------------------------------------------------------
113 MISC
114 ----------------------------------------------------------------------*/
115
116#define XCHAL_NUM_WRITEBUFFER_ENTRIES 8 /* size of write buffer */
117#define XCHAL_INST_FETCH_WIDTH 4 /* instr-fetch width in bytes */
118#define XCHAL_DATA_WIDTH 4 /* data width in bytes */
119/* In T1050, applies to selected core load and store instructions (see ISA): */
120#define XCHAL_UNALIGNED_LOAD_EXCEPTION 1 /* unaligned loads cause exc. */
121#define XCHAL_UNALIGNED_STORE_EXCEPTION 1 /* unaligned stores cause exc.*/
122#define XCHAL_UNALIGNED_LOAD_HW 0 /* unaligned loads work in hw */
123#define XCHAL_UNALIGNED_STORE_HW 0 /* unaligned stores work in hw*/
124
125#define XCHAL_SW_VERSION 900001 /* sw version of this header */
126
127#define XCHAL_CORE_ID "dc233c" /* alphanum core name
128 (CoreID) set in the Xtensa
129 Processor Generator */
130
131#define XCHAL_CORE_DESCRIPTION "dc233c"
132#define XCHAL_BUILD_UNIQUE_ID 0x00004B21 /* 22-bit sw build ID */
133
134/*
135 * These definitions describe the hardware targeted by this software.
136 */
137#define XCHAL_HW_CONFIGID0 0xC56707FE /* ConfigID hi 32 bits*/
138#define XCHAL_HW_CONFIGID1 0x14404B21 /* ConfigID lo 32 bits*/
139#define XCHAL_HW_VERSION_NAME "LX4.0.1" /* full version name */
140#define XCHAL_HW_VERSION_MAJOR 2400 /* major ver# of targeted hw */
141#define XCHAL_HW_VERSION_MINOR 1 /* minor ver# of targeted hw */
142#define XCHAL_HW_VERSION 240001 /* major*100+minor */
143#define XCHAL_HW_REL_LX4 1
144#define XCHAL_HW_REL_LX4_0 1
145#define XCHAL_HW_REL_LX4_0_1 1
146#define XCHAL_HW_CONFIGID_RELIABLE 1
147/* If software targets a *range* of hardware versions, these are the bounds: */
148#define XCHAL_HW_MIN_VERSION_MAJOR 2400 /* major v of earliest tgt hw */
149#define XCHAL_HW_MIN_VERSION_MINOR 1 /* minor v of earliest tgt hw */
150#define XCHAL_HW_MIN_VERSION 240001 /* earliest targeted hw */
151#define XCHAL_HW_MAX_VERSION_MAJOR 2400 /* major v of latest tgt hw */
152#define XCHAL_HW_MAX_VERSION_MINOR 1 /* minor v of latest tgt hw */
153#define XCHAL_HW_MAX_VERSION 240001 /* latest targeted hw */
154
155
156/*----------------------------------------------------------------------
157 CACHE
158 ----------------------------------------------------------------------*/
159
160#define XCHAL_ICACHE_LINESIZE 32 /* I-cache line size in bytes */
161#define XCHAL_DCACHE_LINESIZE 32 /* D-cache line size in bytes */
162#define XCHAL_ICACHE_LINEWIDTH 5 /* log2(I line size in bytes) */
163#define XCHAL_DCACHE_LINEWIDTH 5 /* log2(D line size in bytes) */
164
165#define XCHAL_ICACHE_SIZE 16384 /* I-cache size in bytes or 0 */
166#define XCHAL_DCACHE_SIZE 16384 /* D-cache size in bytes or 0 */
167
168#define XCHAL_DCACHE_IS_WRITEBACK 1 /* writeback feature */
169#define XCHAL_DCACHE_IS_COHERENT 0 /* MP coherence feature */
170
171#define XCHAL_HAVE_PREFETCH 0 /* PREFCTL register */
172
173
174
175
176/****************************************************************************
177 Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
178 ****************************************************************************/
179
180
181#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
182
183/*----------------------------------------------------------------------
184 CACHE
185 ----------------------------------------------------------------------*/
186
187#define XCHAL_HAVE_PIF 1 /* any outbound PIF present */
188
189/* If present, cache size in bytes == (ways * 2^(linewidth + setwidth)). */
190
191/* Number of cache sets in log2(lines per way): */
192#define XCHAL_ICACHE_SETWIDTH 7
193#define XCHAL_DCACHE_SETWIDTH 7
194
195/* Cache set associativity (number of ways): */
196#define XCHAL_ICACHE_WAYS 4
197#define XCHAL_DCACHE_WAYS 4
198
199/* Cache features: */
200#define XCHAL_ICACHE_LINE_LOCKABLE 1
201#define XCHAL_DCACHE_LINE_LOCKABLE 1
202#define XCHAL_ICACHE_ECC_PARITY 0
203#define XCHAL_DCACHE_ECC_PARITY 0
204
205/* Cache access size in bytes (affects operation of SICW instruction): */
206#define XCHAL_ICACHE_ACCESS_SIZE 4
207#define XCHAL_DCACHE_ACCESS_SIZE 4
208
209/* Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits): */
210#define XCHAL_CA_BITS 4
211
212
213/*----------------------------------------------------------------------
214 INTERNAL I/D RAM/ROMs and XLMI
215 ----------------------------------------------------------------------*/
216
217#define XCHAL_NUM_INSTROM 0 /* number of core instr. ROMs */
218#define XCHAL_NUM_INSTRAM 0 /* number of core instr. RAMs */
219#define XCHAL_NUM_DATAROM 0 /* number of core data ROMs */
220#define XCHAL_NUM_DATARAM 0 /* number of core data RAMs */
221#define XCHAL_NUM_URAM 0 /* number of core unified RAMs*/
222#define XCHAL_NUM_XLMI 0 /* number of core XLMI ports */
223
224#define XCHAL_HAVE_IMEM_LOADSTORE 1 /* can load/store to IROM/IRAM*/
225
226
227/*----------------------------------------------------------------------
228 INTERRUPTS and TIMERS
229 ----------------------------------------------------------------------*/
230
231#define XCHAL_HAVE_INTERRUPTS 1 /* interrupt option */
232#define XCHAL_HAVE_HIGHPRI_INTERRUPTS 1 /* med/high-pri. interrupts */
233#define XCHAL_HAVE_NMI 1 /* non-maskable interrupt */
234#define XCHAL_HAVE_CCOUNT 1 /* CCOUNT reg. (timer option) */
235#define XCHAL_NUM_TIMERS 3 /* number of CCOMPAREn regs */
236#define XCHAL_NUM_INTERRUPTS 22 /* number of interrupts */
237#define XCHAL_NUM_INTERRUPTS_LOG2 5 /* ceil(log2(NUM_INTERRUPTS)) */
238#define XCHAL_NUM_EXTINTERRUPTS 17 /* num of external interrupts */
239#define XCHAL_NUM_INTLEVELS 6 /* number of interrupt levels
240 (not including level zero) */
241#define XCHAL_EXCM_LEVEL 3 /* level masked by PS.EXCM */
242 /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
243
244/* Masks of interrupts at each interrupt level: */
245#define XCHAL_INTLEVEL1_MASK 0x001F80FF
246#define XCHAL_INTLEVEL2_MASK 0x00000100
247#define XCHAL_INTLEVEL3_MASK 0x00200E00
248#define XCHAL_INTLEVEL4_MASK 0x00001000
249#define XCHAL_INTLEVEL5_MASK 0x00002000
250#define XCHAL_INTLEVEL6_MASK 0x00000000
251#define XCHAL_INTLEVEL7_MASK 0x00004000
252
253/* Masks of interrupts at each range 1..n of interrupt levels: */
254#define XCHAL_INTLEVEL1_ANDBELOW_MASK 0x001F80FF
255#define XCHAL_INTLEVEL2_ANDBELOW_MASK 0x001F81FF
256#define XCHAL_INTLEVEL3_ANDBELOW_MASK 0x003F8FFF
257#define XCHAL_INTLEVEL4_ANDBELOW_MASK 0x003F9FFF
258#define XCHAL_INTLEVEL5_ANDBELOW_MASK 0x003FBFFF
259#define XCHAL_INTLEVEL6_ANDBELOW_MASK 0x003FBFFF
260#define XCHAL_INTLEVEL7_ANDBELOW_MASK 0x003FFFFF
261
262/* Level of each interrupt: */
263#define XCHAL_INT0_LEVEL 1
264#define XCHAL_INT1_LEVEL 1
265#define XCHAL_INT2_LEVEL 1
266#define XCHAL_INT3_LEVEL 1
267#define XCHAL_INT4_LEVEL 1
268#define XCHAL_INT5_LEVEL 1
269#define XCHAL_INT6_LEVEL 1
270#define XCHAL_INT7_LEVEL 1
271#define XCHAL_INT8_LEVEL 2
272#define XCHAL_INT9_LEVEL 3
273#define XCHAL_INT10_LEVEL 3
274#define XCHAL_INT11_LEVEL 3
275#define XCHAL_INT12_LEVEL 4
276#define XCHAL_INT13_LEVEL 5
277#define XCHAL_INT14_LEVEL 7
278#define XCHAL_INT15_LEVEL 1
279#define XCHAL_INT16_LEVEL 1
280#define XCHAL_INT17_LEVEL 1
281#define XCHAL_INT18_LEVEL 1
282#define XCHAL_INT19_LEVEL 1
283#define XCHAL_INT20_LEVEL 1
284#define XCHAL_INT21_LEVEL 3
285#define XCHAL_DEBUGLEVEL 6 /* debug interrupt level */
286#define XCHAL_HAVE_DEBUG_EXTERN_INT 1 /* OCD external db interrupt */
287#define XCHAL_NMILEVEL 7 /* NMI "level" (for use with
288 EXCSAVE/EPS/EPC_n, RFI n) */
289
290/* Type of each interrupt: */
291#define XCHAL_INT0_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
292#define XCHAL_INT1_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
293#define XCHAL_INT2_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
294#define XCHAL_INT3_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
295#define XCHAL_INT4_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
296#define XCHAL_INT5_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
297#define XCHAL_INT6_TYPE XTHAL_INTTYPE_TIMER
298#define XCHAL_INT7_TYPE XTHAL_INTTYPE_SOFTWARE
299#define XCHAL_INT8_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
300#define XCHAL_INT9_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
301#define XCHAL_INT10_TYPE XTHAL_INTTYPE_TIMER
302#define XCHAL_INT11_TYPE XTHAL_INTTYPE_SOFTWARE
303#define XCHAL_INT12_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
304#define XCHAL_INT13_TYPE XTHAL_INTTYPE_TIMER
305#define XCHAL_INT14_TYPE XTHAL_INTTYPE_NMI
306#define XCHAL_INT15_TYPE XTHAL_INTTYPE_EXTERN_EDGE
307#define XCHAL_INT16_TYPE XTHAL_INTTYPE_EXTERN_EDGE
308#define XCHAL_INT17_TYPE XTHAL_INTTYPE_EXTERN_EDGE
309#define XCHAL_INT18_TYPE XTHAL_INTTYPE_EXTERN_EDGE
310#define XCHAL_INT19_TYPE XTHAL_INTTYPE_EXTERN_EDGE
311#define XCHAL_INT20_TYPE XTHAL_INTTYPE_EXTERN_EDGE
312#define XCHAL_INT21_TYPE XTHAL_INTTYPE_EXTERN_EDGE
313
314/* Masks of interrupts for each type of interrupt: */
315#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFC00000
316#define XCHAL_INTTYPE_MASK_SOFTWARE 0x00000880
317#define XCHAL_INTTYPE_MASK_EXTERN_EDGE 0x003F8000
318#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000133F
319#define XCHAL_INTTYPE_MASK_TIMER 0x00002440
320#define XCHAL_INTTYPE_MASK_NMI 0x00004000
321#define XCHAL_INTTYPE_MASK_WRITE_ERROR 0x00000000
322
323/* Interrupt numbers assigned to specific interrupt sources: */
324#define XCHAL_TIMER0_INTERRUPT 6 /* CCOMPARE0 */
325#define XCHAL_TIMER1_INTERRUPT 10 /* CCOMPARE1 */
326#define XCHAL_TIMER2_INTERRUPT 13 /* CCOMPARE2 */
327#define XCHAL_TIMER3_INTERRUPT XTHAL_TIMER_UNCONFIGURED
328#define XCHAL_NMI_INTERRUPT 14 /* non-maskable interrupt */
329
330/* Interrupt numbers for levels at which only one interrupt is configured: */
331#define XCHAL_INTLEVEL2_NUM 8
332#define XCHAL_INTLEVEL4_NUM 12
333#define XCHAL_INTLEVEL5_NUM 13
334#define XCHAL_INTLEVEL7_NUM 14
335/* (There are many interrupts each at level(s) 1, 3.) */
336
337
338/*
339 * External interrupt vectors/levels.
340 * These macros describe how Xtensa processor interrupt numbers
341 * (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
342 * map to external BInterrupt<n> pins, for those interrupts
343 * configured as external (level-triggered, edge-triggered, or NMI).
344 * See the Xtensa processor databook for more details.
345 */
346
347/* Core interrupt numbers mapped to each EXTERNAL interrupt number: */
348#define XCHAL_EXTINT0_NUM 0 /* (intlevel 1) */
349#define XCHAL_EXTINT1_NUM 1 /* (intlevel 1) */
350#define XCHAL_EXTINT2_NUM 2 /* (intlevel 1) */
351#define XCHAL_EXTINT3_NUM 3 /* (intlevel 1) */
352#define XCHAL_EXTINT4_NUM 4 /* (intlevel 1) */
353#define XCHAL_EXTINT5_NUM 5 /* (intlevel 1) */
354#define XCHAL_EXTINT6_NUM 8 /* (intlevel 2) */
355#define XCHAL_EXTINT7_NUM 9 /* (intlevel 3) */
356#define XCHAL_EXTINT8_NUM 12 /* (intlevel 4) */
357#define XCHAL_EXTINT9_NUM 14 /* (intlevel 7) */
358#define XCHAL_EXTINT10_NUM 15 /* (intlevel 1) */
359#define XCHAL_EXTINT11_NUM 16 /* (intlevel 1) */
360#define XCHAL_EXTINT12_NUM 17 /* (intlevel 1) */
361#define XCHAL_EXTINT13_NUM 18 /* (intlevel 1) */
362#define XCHAL_EXTINT14_NUM 19 /* (intlevel 1) */
363#define XCHAL_EXTINT15_NUM 20 /* (intlevel 1) */
364#define XCHAL_EXTINT16_NUM 21 /* (intlevel 3) */
365
366
367/*----------------------------------------------------------------------
368 EXCEPTIONS and VECTORS
369 ----------------------------------------------------------------------*/
370
371#define XCHAL_XEA_VERSION 2 /* Xtensa Exception Architecture
372 number: 1 == XEA1 (old)
373 2 == XEA2 (new)
374 0 == XEAX (extern) or TX */
375#define XCHAL_HAVE_XEA1 0 /* Exception Architecture 1 */
376#define XCHAL_HAVE_XEA2 1 /* Exception Architecture 2 */
377#define XCHAL_HAVE_XEAX 0 /* External Exception Arch. */
378#define XCHAL_HAVE_EXCEPTIONS 1 /* exception option */
379#define XCHAL_HAVE_HALT 0 /* halt architecture option */
380#define XCHAL_HAVE_BOOTLOADER 0 /* boot loader (for TX) */
381#define XCHAL_HAVE_MEM_ECC_PARITY 0 /* local memory ECC/parity */
382#define XCHAL_HAVE_VECTOR_SELECT 1 /* relocatable vectors */
383#define XCHAL_HAVE_VECBASE 1 /* relocatable vectors */
384#define XCHAL_VECBASE_RESET_VADDR 0x00002000 /* VECBASE reset value */
385#define XCHAL_VECBASE_RESET_PADDR 0x00002000
386#define XCHAL_RESET_VECBASE_OVERLAP 0
387
388#define XCHAL_RESET_VECTOR0_VADDR 0xFE000000
389#define XCHAL_RESET_VECTOR0_PADDR 0xFE000000
390#define XCHAL_RESET_VECTOR1_VADDR 0x00001000
391#define XCHAL_RESET_VECTOR1_PADDR 0x00001000
392#define XCHAL_RESET_VECTOR_VADDR 0xFE000000
393#define XCHAL_RESET_VECTOR_PADDR 0xFE000000
394#define XCHAL_USER_VECOFS 0x00000340
395#define XCHAL_USER_VECTOR_VADDR 0x00002340
396#define XCHAL_USER_VECTOR_PADDR 0x00002340
397#define XCHAL_KERNEL_VECOFS 0x00000300
398#define XCHAL_KERNEL_VECTOR_VADDR 0x00002300
399#define XCHAL_KERNEL_VECTOR_PADDR 0x00002300
400#define XCHAL_DOUBLEEXC_VECOFS 0x000003C0
401#define XCHAL_DOUBLEEXC_VECTOR_VADDR 0x000023C0
402#define XCHAL_DOUBLEEXC_VECTOR_PADDR 0x000023C0
403#define XCHAL_WINDOW_OF4_VECOFS 0x00000000
404#define XCHAL_WINDOW_UF4_VECOFS 0x00000040
405#define XCHAL_WINDOW_OF8_VECOFS 0x00000080
406#define XCHAL_WINDOW_UF8_VECOFS 0x000000C0
407#define XCHAL_WINDOW_OF12_VECOFS 0x00000100
408#define XCHAL_WINDOW_UF12_VECOFS 0x00000140
409#define XCHAL_WINDOW_VECTORS_VADDR 0x00002000
410#define XCHAL_WINDOW_VECTORS_PADDR 0x00002000
411#define XCHAL_INTLEVEL2_VECOFS 0x00000180
412#define XCHAL_INTLEVEL2_VECTOR_VADDR 0x00002180
413#define XCHAL_INTLEVEL2_VECTOR_PADDR 0x00002180
414#define XCHAL_INTLEVEL3_VECOFS 0x000001C0
415#define XCHAL_INTLEVEL3_VECTOR_VADDR 0x000021C0
416#define XCHAL_INTLEVEL3_VECTOR_PADDR 0x000021C0
417#define XCHAL_INTLEVEL4_VECOFS 0x00000200
418#define XCHAL_INTLEVEL4_VECTOR_VADDR 0x00002200
419#define XCHAL_INTLEVEL4_VECTOR_PADDR 0x00002200
420#define XCHAL_INTLEVEL5_VECOFS 0x00000240
421#define XCHAL_INTLEVEL5_VECTOR_VADDR 0x00002240
422#define XCHAL_INTLEVEL5_VECTOR_PADDR 0x00002240
423#define XCHAL_INTLEVEL6_VECOFS 0x00000280
424#define XCHAL_INTLEVEL6_VECTOR_VADDR 0x00002280
425#define XCHAL_INTLEVEL6_VECTOR_PADDR 0x00002280
426#define XCHAL_DEBUG_VECOFS XCHAL_INTLEVEL6_VECOFS
427#define XCHAL_DEBUG_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
428#define XCHAL_DEBUG_VECTOR_PADDR XCHAL_INTLEVEL6_VECTOR_PADDR
429#define XCHAL_NMI_VECOFS 0x000002C0
430#define XCHAL_NMI_VECTOR_VADDR 0x000022C0
431#define XCHAL_NMI_VECTOR_PADDR 0x000022C0
432#define XCHAL_INTLEVEL7_VECOFS XCHAL_NMI_VECOFS
433#define XCHAL_INTLEVEL7_VECTOR_VADDR XCHAL_NMI_VECTOR_VADDR
434#define XCHAL_INTLEVEL7_VECTOR_PADDR XCHAL_NMI_VECTOR_PADDR
435
436
437/*----------------------------------------------------------------------
438 DEBUG
439 ----------------------------------------------------------------------*/
440
441#define XCHAL_HAVE_OCD 1 /* OnChipDebug option */
442#define XCHAL_NUM_IBREAK 2 /* number of IBREAKn regs */
443#define XCHAL_NUM_DBREAK 2 /* number of DBREAKn regs */
444#define XCHAL_HAVE_OCD_DIR_ARRAY 1 /* faster OCD option */
445
446
447/*----------------------------------------------------------------------
448 MMU
449 ----------------------------------------------------------------------*/
450
451/* See core-matmap.h header file for more details. */
452
453#define XCHAL_HAVE_TLBS 1 /* inverse of HAVE_CACHEATTR */
454#define XCHAL_HAVE_SPANNING_WAY 1 /* one way maps I+D 4GB vaddr */
455#define XCHAL_SPANNING_WAY 6 /* TLB spanning way number */
456#define XCHAL_HAVE_IDENTITY_MAP 0 /* vaddr == paddr always */
457#define XCHAL_HAVE_CACHEATTR 0 /* CACHEATTR register present */
458#define XCHAL_HAVE_MIMIC_CACHEATTR 0 /* region protection */
459#define XCHAL_HAVE_XLT_CACHEATTR 0 /* region prot. w/translation */
460#define XCHAL_HAVE_PTP_MMU 1 /* full MMU (with page table
461 [autorefill] and protection)
462 usable for an MMU-based OS */
463/* If none of the above last 4 are set, it's a custom TLB configuration. */
464#define XCHAL_ITLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
465#define XCHAL_DTLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
466
467#define XCHAL_MMU_ASID_BITS 8 /* number of bits in ASIDs */
468#define XCHAL_MMU_RINGS 4 /* number of rings (1..4) */
469#define XCHAL_MMU_RING_BITS 2 /* num of bits in RING field */
470
471#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
472
473
474#endif /* _XTENSA_CORE_CONFIGURATION_H */
475
diff --git a/arch/xtensa/variants/dc233c/include/variant/tie-asm.h b/arch/xtensa/variants/dc233c/include/variant/tie-asm.h
new file mode 100644
index 000000000000..5dbd981ea424
--- /dev/null
+++ b/arch/xtensa/variants/dc233c/include/variant/tie-asm.h
@@ -0,0 +1,193 @@
1/*
2 * tie-asm.h -- compile-time HAL assembler definitions dependent on CORE & TIE
3 *
4 * NOTE: This header file is not meant to be included directly.
5 */
6
7/* This header file contains assembly-language definitions (assembly
8 macros, etc.) for this specific Xtensa processor's TIE extensions
9 and options. It is customized to this Xtensa processor configuration.
10
11 Copyright (c) 1999-2010 Tensilica Inc.
12
13 Permission is hereby granted, free of charge, to any person obtaining
14 a copy of this software and associated documentation files (the
15 "Software"), to deal in the Software without restriction, including
16 without limitation the rights to use, copy, modify, merge, publish,
17 distribute, sublicense, and/or sell copies of the Software, and to
18 permit persons to whom the Software is furnished to do so, subject to
19 the following conditions:
20
21 The above copyright notice and this permission notice shall be included
22 in all copies or substantial portions of the Software.
23
24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
27 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
28 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
29 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
30 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
31
32#ifndef _XTENSA_CORE_TIE_ASM_H
33#define _XTENSA_CORE_TIE_ASM_H
34
35/* Selection parameter values for save-area save/restore macros: */
36/* Option vs. TIE: */
37#define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */
38#define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */
39#define XTHAL_SAS_ANYOT 0x0003 /* both of the above */
40/* Whether used automatically by compiler: */
41#define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */
42#define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */
43#define XTHAL_SAS_ANYCC 0x000C /* both of the above */
44/* ABI handling across function calls: */
45#define XTHAL_SAS_CALR 0x0010 /* caller-saved */
46#define XTHAL_SAS_CALE 0x0020 /* callee-saved */
47#define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */
48#define XTHAL_SAS_ANYABI 0x0070 /* all of the above three */
49/* Misc */
50#define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */
51#define XTHAL_SAS3(optie,ccuse,abi) ( ((optie) & XTHAL_SAS_ANYOT) \
52 | ((ccuse) & XTHAL_SAS_ANYCC) \
53 | ((abi) & XTHAL_SAS_ANYABI) )
54
55
56
57 /*
58 * Macro to save all non-coprocessor (extra) custom TIE and optional state
59 * (not including zero-overhead loop registers).
60 * Required parameters:
61 * ptr Save area pointer address register (clobbered)
62 * (register must contain a 4 byte aligned address).
63 * at1..at4 Four temporary address registers (first XCHAL_NCP_NUM_ATMPS
64 * registers are clobbered, the remaining are unused).
65 * Optional parameters:
66 * continue If macro invoked as part of a larger store sequence, set to 1
67 * if this is not the first in the sequence. Defaults to 0.
68 * ofs Offset from start of larger sequence (from value of first ptr
69 * in sequence) at which to store. Defaults to next available space
70 * (or 0 if <continue> is 0).
71 * select Select what category(ies) of registers to store, as a bitmask
72 * (see XTHAL_SAS_xxx constants). Defaults to all registers.
73 * alloc Select what category(ies) of registers to allocate; if any
74 * category is selected here that is not in <select>, space for
75 * the corresponding registers is skipped without doing any store.
76 */
77 .macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
78 xchal_sa_start \continue, \ofs
79 // Optional global register used by default by the compiler:
80 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
81 xchal_sa_align \ptr, 0, 1020, 4, 4
82 rur.THREADPTR \at1 // threadptr option
83 s32i \at1, \ptr, .Lxchal_ofs_+0
84 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
85 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
86 xchal_sa_align \ptr, 0, 1020, 4, 4
87 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
88 .endif
89 // Optional caller-saved registers used by default by the compiler:
90 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select)
91 xchal_sa_align \ptr, 0, 1016, 4, 4
92 rsr \at1, ACCLO // MAC16 option
93 s32i \at1, \ptr, .Lxchal_ofs_+0
94 rsr \at1, ACCHI // MAC16 option
95 s32i \at1, \ptr, .Lxchal_ofs_+4
96 .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
97 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
98 xchal_sa_align \ptr, 0, 1016, 4, 4
99 .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
100 .endif
101 // Optional caller-saved registers not used by default by the compiler:
102 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
103 xchal_sa_align \ptr, 0, 1004, 4, 4
104 rsr \at1, M0 // MAC16 option
105 s32i \at1, \ptr, .Lxchal_ofs_+0
106 rsr \at1, M1 // MAC16 option
107 s32i \at1, \ptr, .Lxchal_ofs_+4
108 rsr \at1, M2 // MAC16 option
109 s32i \at1, \ptr, .Lxchal_ofs_+8
110 rsr \at1, M3 // MAC16 option
111 s32i \at1, \ptr, .Lxchal_ofs_+12
112 rsr \at1, SCOMPARE1 // conditional store option
113 s32i \at1, \ptr, .Lxchal_ofs_+16
114 .set .Lxchal_ofs_, .Lxchal_ofs_ + 20
115 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
116 xchal_sa_align \ptr, 0, 1004, 4, 4
117 .set .Lxchal_ofs_, .Lxchal_ofs_ + 20
118 .endif
119 .endm // xchal_ncp_store
120
121 /*
122 * Macro to restore all non-coprocessor (extra) custom TIE and optional state
123 * (not including zero-overhead loop registers).
124 * Required parameters:
125 * ptr Save area pointer address register (clobbered)
126 * (register must contain a 4 byte aligned address).
127 * at1..at4 Four temporary address registers (first XCHAL_NCP_NUM_ATMPS
128 * registers are clobbered, the remaining are unused).
129 * Optional parameters:
130 * continue If macro invoked as part of a larger load sequence, set to 1
131 * if this is not the first in the sequence. Defaults to 0.
132 * ofs Offset from start of larger sequence (from value of first ptr
133 * in sequence) at which to load. Defaults to next available space
134 * (or 0 if <continue> is 0).
135 * select Select what category(ies) of registers to load, as a bitmask
136 * (see XTHAL_SAS_xxx constants). Defaults to all registers.
137 * alloc Select what category(ies) of registers to allocate; if any
138 * category is selected here that is not in <select>, space for
139 * the corresponding registers is skipped without doing any load.
140 */
141 .macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
142 xchal_sa_start \continue, \ofs
143 // Optional global register used by default by the compiler:
144 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
145 xchal_sa_align \ptr, 0, 1020, 4, 4
146 l32i \at1, \ptr, .Lxchal_ofs_+0
147 wur.THREADPTR \at1 // threadptr option
148 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
149 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
150 xchal_sa_align \ptr, 0, 1020, 4, 4
151 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
152 .endif
153 // Optional caller-saved registers used by default by the compiler:
154 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select)
155 xchal_sa_align \ptr, 0, 1016, 4, 4
156 l32i \at1, \ptr, .Lxchal_ofs_+0
157 wsr \at1, ACCLO // MAC16 option
158 l32i \at1, \ptr, .Lxchal_ofs_+4
159 wsr \at1, ACCHI // MAC16 option
160 .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
161 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
162 xchal_sa_align \ptr, 0, 1016, 4, 4
163 .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
164 .endif
165 // Optional caller-saved registers not used by default by the compiler:
166 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
167 xchal_sa_align \ptr, 0, 1004, 4, 4
168 l32i \at1, \ptr, .Lxchal_ofs_+0
169 wsr \at1, M0 // MAC16 option
170 l32i \at1, \ptr, .Lxchal_ofs_+4
171 wsr \at1, M1 // MAC16 option
172 l32i \at1, \ptr, .Lxchal_ofs_+8
173 wsr \at1, M2 // MAC16 option
174 l32i \at1, \ptr, .Lxchal_ofs_+12
175 wsr \at1, M3 // MAC16 option
176 l32i \at1, \ptr, .Lxchal_ofs_+16
177 wsr \at1, SCOMPARE1 // conditional store option
178 .set .Lxchal_ofs_, .Lxchal_ofs_ + 20
179 .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
180 xchal_sa_align \ptr, 0, 1004, 4, 4
181 .set .Lxchal_ofs_, .Lxchal_ofs_ + 20
182 .endif
183 .endm // xchal_ncp_load
184
185
186#define XCHAL_NCP_NUM_ATMPS 1
187
188
189
190#define XCHAL_SA_NUM_ATMPS 1
191
192#endif /*_XTENSA_CORE_TIE_ASM_H*/
193
diff --git a/arch/xtensa/variants/dc233c/include/variant/tie.h b/arch/xtensa/variants/dc233c/include/variant/tie.h
new file mode 100644
index 000000000000..815e52bc3d00
--- /dev/null
+++ b/arch/xtensa/variants/dc233c/include/variant/tie.h
@@ -0,0 +1,150 @@
1/*
2 * tie.h -- compile-time HAL definitions dependent on CORE & TIE configuration
3 *
4 * NOTE: This header file is not meant to be included directly.
5 */
6
7/* This header file describes this specific Xtensa processor's TIE extensions
8 that extend basic Xtensa core functionality. It is customized to this
9 Xtensa processor configuration.
10
11 Copyright (c) 1999-2010 Tensilica Inc.
12
13 Permission is hereby granted, free of charge, to any person obtaining
14 a copy of this software and associated documentation files (the
15 "Software"), to deal in the Software without restriction, including
16 without limitation the rights to use, copy, modify, merge, publish,
17 distribute, sublicense, and/or sell copies of the Software, and to
18 permit persons to whom the Software is furnished to do so, subject to
19 the following conditions:
20
21 The above copyright notice and this permission notice shall be included
22 in all copies or substantial portions of the Software.
23
24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
27 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
28 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
29 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
30 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
31
32#ifndef _XTENSA_CORE_TIE_H
33#define _XTENSA_CORE_TIE_H
34
35#define XCHAL_CP_NUM 1 /* number of coprocessors */
36#define XCHAL_CP_MAX 8 /* max CP ID + 1 (0 if none) */
37#define XCHAL_CP_MASK 0x80 /* bitmask of all CPs by ID */
38#define XCHAL_CP_PORT_MASK 0x80 /* bitmask of only port CPs */
39
40/* Basic parameters of each coprocessor: */
41#define XCHAL_CP7_NAME "XTIOP"
42#define XCHAL_CP7_IDENT XTIOP
43#define XCHAL_CP7_SA_SIZE 0 /* size of state save area */
44#define XCHAL_CP7_SA_ALIGN 1 /* min alignment of save area */
45#define XCHAL_CP_ID_XTIOP 7 /* coprocessor ID (0..7) */
46
47/* Filler info for unassigned coprocessors, to simplify arrays etc: */
48#define XCHAL_CP0_SA_SIZE 0
49#define XCHAL_CP0_SA_ALIGN 1
50#define XCHAL_CP1_SA_SIZE 0
51#define XCHAL_CP1_SA_ALIGN 1
52#define XCHAL_CP2_SA_SIZE 0
53#define XCHAL_CP2_SA_ALIGN 1
54#define XCHAL_CP3_SA_SIZE 0
55#define XCHAL_CP3_SA_ALIGN 1
56#define XCHAL_CP4_SA_SIZE 0
57#define XCHAL_CP4_SA_ALIGN 1
58#define XCHAL_CP5_SA_SIZE 0
59#define XCHAL_CP5_SA_ALIGN 1
60#define XCHAL_CP6_SA_SIZE 0
61#define XCHAL_CP6_SA_ALIGN 1
62
63/* Save area for non-coprocessor optional and custom (TIE) state: */
64#define XCHAL_NCP_SA_SIZE 32
65#define XCHAL_NCP_SA_ALIGN 4
66
67/* Total save area for optional and custom state (NCP + CPn): */
68#define XCHAL_TOTAL_SA_SIZE 32 /* with 16-byte align padding */
69#define XCHAL_TOTAL_SA_ALIGN 4 /* actual minimum alignment */
70
71/*
72 * Detailed contents of save areas.
73 * NOTE: caller must define the XCHAL_SA_REG macro (not defined here)
74 * before expanding the XCHAL_xxx_SA_LIST() macros.
75 *
76 * XCHAL_SA_REG(s,ccused,abikind,kind,opt,name,galign,align,asize,
77 * dbnum,base,regnum,bitsz,gapsz,reset,x...)
78 *
79 * s = passed from XCHAL_*_LIST(s), eg. to select how to expand
80 * ccused = set if used by compiler without special options or code
81 * abikind = 0 (caller-saved), 1 (callee-saved), or 2 (thread-global)
82 * kind = 0 (special reg), 1 (TIE user reg), or 2 (TIE regfile reg)
83 * opt = 0 (custom TIE extension or coprocessor), or 1 (optional reg)
84 * name = lowercase reg name (no quotes)
85 * galign = group byte alignment (power of 2) (galign >= align)
86 * align = register byte alignment (power of 2)
87 * asize = allocated size in bytes (asize*8 == bitsz + gapsz + padsz)
88 * (not including any pad bytes required to galign this or next reg)
89 * dbnum = unique target number f/debug (see <xtensa-libdb-macros.h>)
90 * base = reg shortname w/o index (or sr=special, ur=TIE user reg)
91 * regnum = reg index in regfile, or special/TIE-user reg number
92 * bitsz = number of significant bits (regfile width, or ur/sr mask bits)
93 * gapsz = intervening bits, if bitsz bits not stored contiguously
94 * (padsz = pad bits at end [TIE regfile] or at msbits [ur,sr] of asize)
95 * reset = register reset value (or 0 if undefined at reset)
96 * x = reserved for future use (0 until then)
97 *
98 * To filter out certain registers, e.g. to expand only the non-global
99 * registers used by the compiler, you can do something like this:
100 *
101 * #define XCHAL_SA_REG(s,ccused,p...) SELCC##ccused(p)
102 * #define SELCC0(p...)
103 * #define SELCC1(abikind,p...) SELAK##abikind(p)
104 * #define SELAK0(p...) REG(p)
105 * #define SELAK1(p...) REG(p)
106 * #define SELAK2(p...)
107 * #define REG(kind,tie,name,galn,aln,asz,csz,dbnum,base,rnum,bsz,rst,x...) \
108 * ...what you want to expand...
109 */
110
111#define XCHAL_NCP_SA_NUM 8
112#define XCHAL_NCP_SA_LIST(s) \
113 XCHAL_SA_REG(s,1,2,1,1, threadptr, 4, 4, 4,0x03E7, ur,231, 32,0,0,0) \
114 XCHAL_SA_REG(s,1,0,0,1, acclo, 4, 4, 4,0x0210, sr,16 , 32,0,0,0) \
115 XCHAL_SA_REG(s,1,0,0,1, acchi, 4, 4, 4,0x0211, sr,17 , 8,0,0,0) \
116 XCHAL_SA_REG(s,0,0,0,1, m0, 4, 4, 4,0x0220, sr,32 , 32,0,0,0) \
117 XCHAL_SA_REG(s,0,0,0,1, m1, 4, 4, 4,0x0221, sr,33 , 32,0,0,0) \
118 XCHAL_SA_REG(s,0,0,0,1, m2, 4, 4, 4,0x0222, sr,34 , 32,0,0,0) \
119 XCHAL_SA_REG(s,0,0,0,1, m3, 4, 4, 4,0x0223, sr,35 , 32,0,0,0) \
120 XCHAL_SA_REG(s,0,0,0,1, scompare1, 4, 4, 4,0x020C, sr,12 , 32,0,0,0)
121
122#define XCHAL_CP0_SA_NUM 0
123#define XCHAL_CP0_SA_LIST(s) /* empty */
124
125#define XCHAL_CP1_SA_NUM 0
126#define XCHAL_CP1_SA_LIST(s) /* empty */
127
128#define XCHAL_CP2_SA_NUM 0
129#define XCHAL_CP2_SA_LIST(s) /* empty */
130
131#define XCHAL_CP3_SA_NUM 0
132#define XCHAL_CP3_SA_LIST(s) /* empty */
133
134#define XCHAL_CP4_SA_NUM 0
135#define XCHAL_CP4_SA_LIST(s) /* empty */
136
137#define XCHAL_CP5_SA_NUM 0
138#define XCHAL_CP5_SA_LIST(s) /* empty */
139
140#define XCHAL_CP6_SA_NUM 0
141#define XCHAL_CP6_SA_LIST(s) /* empty */
142
143#define XCHAL_CP7_SA_NUM 0
144#define XCHAL_CP7_SA_LIST(s) /* empty */
145
146/* Byte length of instruction from its first nibble (op0 field), per FLIX. */
147#define XCHAL_OP0_FORMAT_LENGTHS 3,3,3,3,3,3,3,3,2,2,2,2,2,2,3,3
148
149#endif /*_XTENSA_CORE_TIE_H*/
150
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