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-rw-r--r--arch/sh/kernel/Makefile3
-rw-r--r--arch/sh/kernel/cpu/Makefile11
-rw-r--r--arch/sh/kernel/cpu/clock.c27
-rw-r--r--arch/sh/kernel/cpu/init.c2
-rw-r--r--arch/sh/kernel/cpu/irq/Makefile3
-rw-r--r--arch/sh/kernel/cpu/irq/imask.c5
-rw-r--r--arch/sh/kernel/cpu/irq/intc2.c25
-rw-r--r--arch/sh/kernel/cpu/irq/ipr.c93
-rw-r--r--arch/sh/kernel/cpu/sh2/Makefile3
-rw-r--r--arch/sh/kernel/cpu/sh2/clock-sh7619.c81
-rw-r--r--arch/sh/kernel/cpu/sh2/entry.S341
-rw-r--r--arch/sh/kernel/cpu/sh2/ex.S46
-rw-r--r--arch/sh/kernel/cpu/sh2/probe.c16
-rw-r--r--arch/sh/kernel/cpu/sh2/setup-sh7619.c53
-rw-r--r--arch/sh/kernel/cpu/sh2a/Makefile10
-rw-r--r--arch/sh/kernel/cpu/sh2a/clock-sh7206.c85
-rw-r--r--arch/sh/kernel/cpu/sh2a/probe.c39
-rw-r--r--arch/sh/kernel/cpu/sh2a/setup-sh7206.c58
-rw-r--r--arch/sh/kernel/cpu/sh3/Makefile2
-rw-r--r--arch/sh/kernel/cpu/sh3/clock-sh7709.c2
-rw-r--r--arch/sh/kernel/cpu/sh3/entry.S (renamed from arch/sh/kernel/entry.S)546
-rw-r--r--arch/sh/kernel/cpu/sh4/Makefile3
-rw-r--r--arch/sh/kernel/cpu/sh4/clock-sh4-202.c4
-rw-r--r--arch/sh/kernel/cpu/sh4/clock-sh7780.c2
-rw-r--r--arch/sh/kernel/cpu/sh4/fpu.c25
-rw-r--r--arch/sh/kernel/cpu/sh4/probe.c19
-rw-r--r--arch/sh/kernel/cpu/sh4/setup-sh7750.c70
-rw-r--r--arch/sh/kernel/cpu/sh4/setup-sh7780.c36
-rw-r--r--arch/sh/kernel/cpu/sh4/sq.c11
-rw-r--r--arch/sh/kernel/early_printk.c44
-rw-r--r--arch/sh/kernel/entry-common.S433
-rw-r--r--arch/sh/kernel/head.S17
-rw-r--r--arch/sh/kernel/irq.c55
-rw-r--r--arch/sh/kernel/process.c32
-rw-r--r--arch/sh/kernel/relocate_kernel.S14
-rw-r--r--arch/sh/kernel/setup.c2
-rw-r--r--arch/sh/kernel/sh_ksyms.c2
-rw-r--r--arch/sh/kernel/signal.c36
-rw-r--r--arch/sh/kernel/stacktrace.c43
-rw-r--r--arch/sh/kernel/sys_sh.c7
-rw-r--r--arch/sh/kernel/time.c139
-rw-r--r--arch/sh/kernel/timers/Makefile2
-rw-r--r--arch/sh/kernel/timers/timer-cmt.c196
-rw-r--r--arch/sh/kernel/timers/timer-mtu2.c200
-rw-r--r--arch/sh/kernel/timers/timer-tmu.c13
-rw-r--r--arch/sh/kernel/timers/timer.c6
-rw-r--r--arch/sh/kernel/traps.c200
47 files changed, 2406 insertions, 656 deletions
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 5da88a43d350..99c7e5249f7a 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -4,7 +4,7 @@
4 4
5extra-y := head.o init_task.o vmlinux.lds 5extra-y := head.o init_task.o vmlinux.lds
6 6
7obj-y := process.o signal.o entry.o traps.o irq.o \ 7obj-y := process.o signal.o traps.o irq.o \
8 ptrace.o setup.o time.o sys_sh.o semaphore.o \ 8 ptrace.o setup.o time.o sys_sh.o semaphore.o \
9 io.o io_generic.o sh_ksyms.o syscalls.o 9 io.o io_generic.o sh_ksyms.o syscalls.o
10 10
@@ -21,3 +21,4 @@ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
21obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o 21obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
22obj-$(CONFIG_APM) += apm.o 22obj-$(CONFIG_APM) += apm.o
23obj-$(CONFIG_PM) += pm.o 23obj-$(CONFIG_PM) += pm.o
24obj-$(CONFIG_STACKTRACE) += stacktrace.o
diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile
index fb5dac069382..0582e6712b79 100644
--- a/arch/sh/kernel/cpu/Makefile
+++ b/arch/sh/kernel/cpu/Makefile
@@ -2,11 +2,12 @@
2# Makefile for the Linux/SuperH CPU-specifc backends. 2# Makefile for the Linux/SuperH CPU-specifc backends.
3# 3#
4 4
5obj-y += irq/ init.o clock.o 5obj-$(CONFIG_CPU_SH2) = sh2/
6 6obj-$(CONFIG_CPU_SH2A) = sh2a/
7obj-$(CONFIG_CPU_SH2) += sh2/ 7obj-$(CONFIG_CPU_SH3) = sh3/
8obj-$(CONFIG_CPU_SH3) += sh3/ 8obj-$(CONFIG_CPU_SH4) = sh4/
9obj-$(CONFIG_CPU_SH4) += sh4/
10 9
11obj-$(CONFIG_UBC_WAKEUP) += ubc.o 10obj-$(CONFIG_UBC_WAKEUP) += ubc.o
12obj-$(CONFIG_SH_ADC) += adc.o 11obj-$(CONFIG_SH_ADC) += adc.o
12
13obj-y += irq/ init.o clock.o
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 51ec64cdf348..abb586b12565 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -5,9 +5,11 @@
5 * 5 *
6 * This clock framework is derived from the OMAP version by: 6 * This clock framework is derived from the OMAP version by:
7 * 7 *
8 * Copyright (C) 2004 Nokia Corporation 8 * Copyright (C) 2004 - 2005 Nokia Corporation
9 * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> 9 * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
10 * 10 *
11 * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
12 *
11 * This file is subject to the terms and conditions of the GNU General Public 13 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file "COPYING" in the main directory of this archive 14 * License. See the file "COPYING" in the main directory of this archive
13 * for more details. 15 * for more details.
@@ -20,6 +22,7 @@
20#include <linux/kref.h> 22#include <linux/kref.h>
21#include <linux/seq_file.h> 23#include <linux/seq_file.h>
22#include <linux/err.h> 24#include <linux/err.h>
25#include <linux/platform_device.h>
23#include <asm/clock.h> 26#include <asm/clock.h>
24#include <asm/timer.h> 27#include <asm/timer.h>
25 28
@@ -195,17 +198,37 @@ void clk_recalc_rate(struct clk *clk)
195 propagate_rate(clk); 198 propagate_rate(clk);
196} 199}
197 200
198struct clk *clk_get(const char *id) 201/*
202 * Returns a clock. Note that we first try to use device id on the bus
203 * and clock name. If this fails, we try to use clock name only.
204 */
205struct clk *clk_get(struct device *dev, const char *id)
199{ 206{
200 struct clk *p, *clk = ERR_PTR(-ENOENT); 207 struct clk *p, *clk = ERR_PTR(-ENOENT);
208 int idno;
209
210 if (dev == NULL || dev->bus != &platform_bus_type)
211 idno = -1;
212 else
213 idno = to_platform_device(dev)->id;
201 214
202 mutex_lock(&clock_list_sem); 215 mutex_lock(&clock_list_sem);
203 list_for_each_entry(p, &clock_list, node) { 216 list_for_each_entry(p, &clock_list, node) {
217 if (p->id == idno &&
218 strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
219 clk = p;
220 goto found;
221 }
222 }
223
224 list_for_each_entry(p, &clock_list, node) {
204 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) { 225 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
205 clk = p; 226 clk = p;
206 break; 227 break;
207 } 228 }
208 } 229 }
230
231found:
209 mutex_unlock(&clock_list_sem); 232 mutex_unlock(&clock_list_sem);
210 233
211 return clk; 234 return clk;
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index bfb90eb0b7a6..48121766e8d2 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -68,12 +68,14 @@ static void __init cache_init(void)
68 68
69 waysize = cpu_data->dcache.sets; 69 waysize = cpu_data->dcache.sets;
70 70
71#ifdef CCR_CACHE_ORA
71 /* 72 /*
72 * If the OC is already in RAM mode, we only have 73 * If the OC is already in RAM mode, we only have
73 * half of the entries to flush.. 74 * half of the entries to flush..
74 */ 75 */
75 if (ccr & CCR_CACHE_ORA) 76 if (ccr & CCR_CACHE_ORA)
76 waysize >>= 1; 77 waysize >>= 1;
78#endif
77 79
78 waysize <<= cpu_data->dcache.entry_shift; 80 waysize <<= cpu_data->dcache.entry_shift;
79 81
diff --git a/arch/sh/kernel/cpu/irq/Makefile b/arch/sh/kernel/cpu/irq/Makefile
index 1c034c283f59..0049d217561a 100644
--- a/arch/sh/kernel/cpu/irq/Makefile
+++ b/arch/sh/kernel/cpu/irq/Makefile
@@ -1,8 +1,9 @@
1# 1#
2# Makefile for the Linux/SuperH CPU-specifc IRQ handlers. 2# Makefile for the Linux/SuperH CPU-specifc IRQ handlers.
3# 3#
4obj-y += ipr.o imask.o 4obj-y += imask.o
5 5
6obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o
6obj-$(CONFIG_CPU_HAS_PINT_IRQ) += pint.o 7obj-$(CONFIG_CPU_HAS_PINT_IRQ) += pint.o
7obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o 8obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o
8obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o 9obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o
diff --git a/arch/sh/kernel/cpu/irq/imask.c b/arch/sh/kernel/cpu/irq/imask.c
index a33ae3e0a5a5..301b505c4278 100644
--- a/arch/sh/kernel/cpu/irq/imask.c
+++ b/arch/sh/kernel/cpu/irq/imask.c
@@ -53,7 +53,10 @@ void static inline set_interrupt_registers(int ip)
53{ 53{
54 unsigned long __dummy; 54 unsigned long __dummy;
55 55
56 asm volatile("ldc %2, r6_bank\n\t" 56 asm volatile(
57#ifdef CONFIG_CPU_HAS_SR_RB
58 "ldc %2, r6_bank\n\t"
59#endif
57 "stc sr, %0\n\t" 60 "stc sr, %0\n\t"
58 "and #0xf0, %0\n\t" 61 "and #0xf0, %0\n\t"
59 "shlr2 %0\n\t" 62 "shlr2 %0\n\t"
diff --git a/arch/sh/kernel/cpu/irq/intc2.c b/arch/sh/kernel/cpu/irq/intc2.c
index 74ca576a7ce5..74defe76a058 100644
--- a/arch/sh/kernel/cpu/irq/intc2.c
+++ b/arch/sh/kernel/cpu/irq/intc2.c
@@ -11,22 +11,29 @@
11 * Hitachi 7751, the STM ST40 STB1, SH7760, and SH7780. 11 * Hitachi 7751, the STM ST40 STB1, SH7760, and SH7780.
12 */ 12 */
13#include <linux/kernel.h> 13#include <linux/kernel.h>
14#include <linux/irq.h> 14#include <linux/interrupt.h>
15#include <linux/io.h> 15#include <linux/io.h>
16#include <asm/system.h> 16
17#if defined(CONFIG_CPU_SUBTYPE_SH7760)
18#define INTC2_BASE 0xfe080000
19#define INTC2_INTMSK (INTC2_BASE + 0x40)
20#define INTC2_INTMSKCLR (INTC2_BASE + 0x60)
21#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
22#define INTC2_BASE 0xffd40000
23#define INTC2_INTMSK (INTC2_BASE + 0x38)
24#define INTC2_INTMSKCLR (INTC2_BASE + 0x3c)
25#endif
17 26
18static void disable_intc2_irq(unsigned int irq) 27static void disable_intc2_irq(unsigned int irq)
19{ 28{
20 struct intc2_data *p = get_irq_chip_data(irq); 29 struct intc2_data *p = get_irq_chip_data(irq);
21 ctrl_outl(1 << p->msk_shift, 30 ctrl_outl(1 << p->msk_shift, INTC2_INTMSK + p->msk_offset);
22 INTC2_BASE + INTC2_INTMSK_OFFSET + p->msk_offset);
23} 31}
24 32
25static void enable_intc2_irq(unsigned int irq) 33static void enable_intc2_irq(unsigned int irq)
26{ 34{
27 struct intc2_data *p = get_irq_chip_data(irq); 35 struct intc2_data *p = get_irq_chip_data(irq);
28 ctrl_outl(1 << p->msk_shift, 36 ctrl_outl(1 << p->msk_shift, INTC2_INTMSKCLR + p->msk_offset);
29 INTC2_BASE + INTC2_INTMSKCLR_OFFSET + p->msk_offset);
30} 37}
31 38
32static struct irq_chip intc2_irq_chip = { 39static struct irq_chip intc2_irq_chip = {
@@ -61,12 +68,10 @@ void make_intc2_irq(struct intc2_data *table, unsigned int nr_irqs)
61 /* Set the priority level */ 68 /* Set the priority level */
62 local_irq_save(flags); 69 local_irq_save(flags);
63 70
64 ipr = ctrl_inl(INTC2_BASE + INTC2_INTPRI_OFFSET + 71 ipr = ctrl_inl(INTC2_BASE + p->ipr_offset);
65 p->ipr_offset);
66 ipr &= ~(0xf << p->ipr_shift); 72 ipr &= ~(0xf << p->ipr_shift);
67 ipr |= p->priority << p->ipr_shift; 73 ipr |= p->priority << p->ipr_shift;
68 ctrl_outl(ipr, INTC2_BASE + INTC2_INTPRI_OFFSET + 74 ctrl_outl(ipr, INTC2_BASE + p->ipr_offset);
69 p->ipr_offset);
70 75
71 local_irq_restore(flags); 76 local_irq_restore(flags);
72 77
diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index a0089563cbfc..35eb5751a3aa 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -19,25 +19,21 @@
19#include <linux/init.h> 19#include <linux/init.h>
20#include <linux/irq.h> 20#include <linux/irq.h>
21#include <linux/module.h> 21#include <linux/module.h>
22#include <asm/system.h> 22#include <linux/io.h>
23#include <asm/io.h> 23#include <linux/interrupt.h>
24#include <asm/machvec.h>
25
26 24
27static void disable_ipr_irq(unsigned int irq) 25static void disable_ipr_irq(unsigned int irq)
28{ 26{
29 struct ipr_data *p = get_irq_chip_data(irq); 27 struct ipr_data *p = get_irq_chip_data(irq);
30 int shift = p->shift*4;
31 /* Set the priority in IPR to 0 */ 28 /* Set the priority in IPR to 0 */
32 ctrl_outw(ctrl_inw(p->addr) & (0xffff ^ (0xf << shift)), p->addr); 29 ctrl_outw(ctrl_inw(p->addr) & (0xffff ^ (0xf << p->shift)), p->addr);
33} 30}
34 31
35static void enable_ipr_irq(unsigned int irq) 32static void enable_ipr_irq(unsigned int irq)
36{ 33{
37 struct ipr_data *p = get_irq_chip_data(irq); 34 struct ipr_data *p = get_irq_chip_data(irq);
38 int shift = p->shift*4;
39 /* Set priority in IPR back to original value */ 35 /* Set priority in IPR back to original value */
40 ctrl_outw(ctrl_inw(p->addr) | (p->priority << shift), p->addr); 36 ctrl_outw(ctrl_inw(p->addr) | (p->priority << p->shift), p->addr);
41} 37}
42 38
43static struct irq_chip ipr_irq_chip = { 39static struct irq_chip ipr_irq_chip = {
@@ -53,6 +49,10 @@ void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs)
53 49
54 for (i = 0; i < nr_irqs; i++) { 50 for (i = 0; i < nr_irqs; i++) {
55 unsigned int irq = table[i].irq; 51 unsigned int irq = table[i].irq;
52 table[i].addr = map_ipridx_to_addr(table[i].ipr_idx);
53 /* could the IPR index be mapped, if not we ignore this */
54 if (table[i].addr == 0)
55 continue;
56 disable_irq_nosync(irq); 56 disable_irq_nosync(irq);
57 set_irq_chip_and_handler_name(irq, &ipr_irq_chip, 57 set_irq_chip_and_handler_name(irq, &ipr_irq_chip,
58 handle_level_irq, "level"); 58 handle_level_irq, "level");
@@ -62,83 +62,6 @@ void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs)
62} 62}
63EXPORT_SYMBOL(make_ipr_irq); 63EXPORT_SYMBOL(make_ipr_irq);
64 64
65static struct ipr_data sys_ipr_map[] = {
66#ifndef CONFIG_CPU_SUBTYPE_SH7780
67 { TIMER_IRQ, TIMER_IPR_ADDR, TIMER_IPR_POS, TIMER_PRIORITY },
68 { TIMER1_IRQ, TIMER1_IPR_ADDR, TIMER1_IPR_POS, TIMER1_PRIORITY },
69#ifdef RTC_IRQ
70 { RTC_IRQ, RTC_IPR_ADDR, RTC_IPR_POS, RTC_PRIORITY },
71#endif
72#ifdef SCI_ERI_IRQ
73 { SCI_ERI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
74 { SCI_RXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
75 { SCI_TXI_IRQ, SCI_IPR_ADDR, SCI_IPR_POS, SCI_PRIORITY },
76#endif
77#ifdef SCIF1_ERI_IRQ
78 { SCIF1_ERI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
79 { SCIF1_RXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
80 { SCIF1_BRI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
81 { SCIF1_TXI_IRQ, SCIF1_IPR_ADDR, SCIF1_IPR_POS, SCIF1_PRIORITY },
82#endif
83#if defined(CONFIG_CPU_SUBTYPE_SH7300)
84 { SCIF0_IRQ, SCIF0_IPR_ADDR, SCIF0_IPR_POS, SCIF0_PRIORITY },
85 { DMTE2_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY },
86 { DMTE3_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY },
87 { VIO_IRQ, VIO_IPR_ADDR, VIO_IPR_POS, VIO_PRIORITY },
88#endif
89#ifdef SCIF_ERI_IRQ
90 { SCIF_ERI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
91 { SCIF_RXI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
92 { SCIF_BRI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
93 { SCIF_TXI_IRQ, SCIF_IPR_ADDR, SCIF_IPR_POS, SCIF_PRIORITY },
94#endif
95#ifdef IRDA_ERI_IRQ
96 { IRDA_ERI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
97 { IRDA_RXI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
98 { IRDA_BRI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
99 { IRDA_TXI_IRQ, IRDA_IPR_ADDR, IRDA_IPR_POS, IRDA_PRIORITY },
100#endif
101#if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) || \
102 defined(CONFIG_CPU_SUBTYPE_SH7706) || \
103 defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
104 /*
105 * Initialize the Interrupt Controller (INTC)
106 * registers to their power on values
107 */
108
109 /*
110 * Enable external irq (INTC IRQ mode).
111 * You should set corresponding bits of PFC to "00"
112 * to enable these interrupts.
113 */
114 { IRQ0_IRQ, IRQ0_IPR_ADDR, IRQ0_IPR_POS, IRQ0_PRIORITY },
115 { IRQ1_IRQ, IRQ1_IPR_ADDR, IRQ1_IPR_POS, IRQ1_PRIORITY },
116 { IRQ2_IRQ, IRQ2_IPR_ADDR, IRQ2_IPR_POS, IRQ2_PRIORITY },
117 { IRQ3_IRQ, IRQ3_IPR_ADDR, IRQ3_IPR_POS, IRQ3_PRIORITY },
118 { IRQ4_IRQ, IRQ4_IPR_ADDR, IRQ4_IPR_POS, IRQ4_PRIORITY },
119 { IRQ5_IRQ, IRQ5_IPR_ADDR, IRQ5_IPR_POS, IRQ5_PRIORITY },
120#endif
121#endif
122};
123
124void __init init_IRQ(void)
125{
126 make_ipr_irq(sys_ipr_map, ARRAY_SIZE(sys_ipr_map));
127
128#ifdef CONFIG_CPU_HAS_PINT_IRQ
129 init_IRQ_pint();
130#endif
131
132#ifdef CONFIG_CPU_HAS_INTC2_IRQ
133 init_IRQ_intc2();
134#endif
135 /* Perform the machine specific initialisation */
136 if (sh_mv.mv_init_irq != NULL)
137 sh_mv.mv_init_irq();
138
139 irq_ctx_init(smp_processor_id());
140}
141
142#if !defined(CONFIG_CPU_HAS_PINT_IRQ) 65#if !defined(CONFIG_CPU_HAS_PINT_IRQ)
143int ipr_irq_demux(int irq) 66int ipr_irq_demux(int irq)
144{ 67{
diff --git a/arch/sh/kernel/cpu/sh2/Makefile b/arch/sh/kernel/cpu/sh2/Makefile
index 389353fba608..f0f059acfcfb 100644
--- a/arch/sh/kernel/cpu/sh2/Makefile
+++ b/arch/sh/kernel/cpu/sh2/Makefile
@@ -2,5 +2,6 @@
2# Makefile for the Linux/SuperH SH-2 backends. 2# Makefile for the Linux/SuperH SH-2 backends.
3# 3#
4 4
5obj-y := probe.o 5obj-y := ex.o probe.o entry.o
6 6
7obj-$(CONFIG_CPU_SUBTYPE_SH7619) += setup-sh7619.o clock-sh7619.o
diff --git a/arch/sh/kernel/cpu/sh2/clock-sh7619.c b/arch/sh/kernel/cpu/sh2/clock-sh7619.c
new file mode 100644
index 000000000000..d0440b269702
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2/clock-sh7619.c
@@ -0,0 +1,81 @@
1/*
2 * arch/sh/kernel/cpu/sh2/clock-sh7619.c
3 *
4 * SH7619 support for the clock framework
5 *
6 * Copyright (C) 2006 Yoshinori Sato
7 *
8 * Based on clock-sh4.c
9 * Copyright (C) 2005 Paul Mundt
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file "COPYING" in the main directory of this archive
13 * for more details.
14 */
15#include <linux/init.h>
16#include <linux/kernel.h>
17#include <asm/clock.h>
18#include <asm/freq.h>
19#include <asm/io.h>
20
21const static int pll1rate[]={1,2};
22const static int pfc_divisors[]={1,2,0,4};
23
24#if (CONFIG_SH_CLK_MD == 1) || (CONFIG_SH_CLK_MD == 2)
25#define PLL2 (4)
26#elif (CONFIG_SH_CLK_MD == 5) || (CONFIG_SH_CLK_MD == 6)
27#define PLL2 (2)
28#else
29#error "Illigal Clock Mode!"
30#endif
31
32static void master_clk_init(struct clk *clk)
33{
34 clk->rate *= PLL2 * pll1rate[(ctrl_inw(FREQCR) >> 8) & 7];
35}
36
37static struct clk_ops sh7619_master_clk_ops = {
38 .init = master_clk_init,
39};
40
41static void module_clk_recalc(struct clk *clk)
42{
43 int idx = (ctrl_inw(FREQCR) & 0x0007);
44 clk->rate = clk->parent->rate / pfc_divisors[idx];
45}
46
47static struct clk_ops sh7619_module_clk_ops = {
48 .recalc = module_clk_recalc,
49};
50
51static void bus_clk_recalc(struct clk *clk)
52{
53 clk->rate = clk->parent->rate / pll1rate[(ctrl_inw(FREQCR) >> 8) & 7];
54}
55
56static struct clk_ops sh7619_bus_clk_ops = {
57 .recalc = bus_clk_recalc,
58};
59
60static void cpu_clk_recalc(struct clk *clk)
61{
62 clk->rate = clk->parent->rate;
63}
64
65static struct clk_ops sh7619_cpu_clk_ops = {
66 .recalc = cpu_clk_recalc,
67};
68
69static struct clk_ops *sh7619_clk_ops[] = {
70 &sh7619_master_clk_ops,
71 &sh7619_module_clk_ops,
72 &sh7619_bus_clk_ops,
73 &sh7619_cpu_clk_ops,
74};
75
76void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
77{
78 if (idx < ARRAY_SIZE(sh7619_clk_ops))
79 *ops = sh7619_clk_ops[idx];
80}
81
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
new file mode 100644
index 000000000000..34d51b3745ea
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -0,0 +1,341 @@
1/*
2 * arch/sh/kernel/cpu/sh2/entry.S
3 *
4 * The SH-2 exception entry
5 *
6 * Copyright (C) 2005,2006 Yoshinori Sato
7 * Copyright (C) 2005 AXE,Inc.
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file "COPYING" in the main directory of this archive
11 * for more details.
12 */
13
14#include <linux/linkage.h>
15#include <asm/asm-offsets.h>
16#include <asm/thread_info.h>
17#include <asm/cpu/mmu_context.h>
18#include <asm/unistd.h>
19#include <asm/errno.h>
20#include <asm/page.h>
21
22/* Offsets to the stack */
23OFF_R0 = 0 /* Return value. New ABI also arg4 */
24OFF_R1 = 4 /* New ABI: arg5 */
25OFF_R2 = 8 /* New ABI: arg6 */
26OFF_R3 = 12 /* New ABI: syscall_nr */
27OFF_R4 = 16 /* New ABI: arg0 */
28OFF_R5 = 20 /* New ABI: arg1 */
29OFF_R6 = 24 /* New ABI: arg2 */
30OFF_R7 = 28 /* New ABI: arg3 */
31OFF_SP = (15*4)
32OFF_PC = (16*4)
33OFF_SR = (16*4+2*4)
34OFF_TRA = (16*4+6*4)
35
36#include <asm/entry-macros.S>
37
38ENTRY(exception_handler)
39 ! already saved r0/r1
40 mov.l r2,@-sp
41 mov.l r3,@-sp
42 mov r0,r1
43 cli
44 mov.l $cpu_mode,r2
45 mov.l @r2,r0
46 mov.l @(5*4,r15),r3 ! previous SR
47 shll2 r3 ! set "S" flag
48 rotl r0 ! T <- "S" flag
49 rotl r0 ! "S" flag is LSB
50 rotcr r3 ! T -> r3:b30
51 shlr r3
52 shlr r0
53 bt/s 1f
54 mov.l r3,@(5*4,r15) ! copy cpu mode to SR
55 ! switch to kernel mode
56 mov #1,r0
57 rotr r0
58 rotr r0
59 mov.l r0,@r2 ! enter kernel mode
60 mov.l $current_thread_info,r2
61 mov.l @r2,r2
62 mov #0x20,r0
63 shll8 r0
64 add r2,r0
65 mov r15,r2 ! r2 = user stack top
66 mov r0,r15 ! switch kernel stack
67 add #-4,r15 ! dummy
68 mov.l r1,@-r15 ! TRA
69 sts.l macl, @-r15
70 sts.l mach, @-r15
71 stc.l gbr, @-r15
72 mov.l @(4*4,r2),r0
73 mov.l @(5*4,r2),r1
74 mov.l r1,@-r15 ! original SR
75 sts.l pr,@-r15
76 mov.l r0,@-r15 ! original PC
77 mov r2,r3
78 add #(4+2)*4,r3 ! rewind r0 - r3 + exception frame
79 mov.l r3,@-r15 ! original SP
80 mov.l r14,@-r15
81 mov.l r13,@-r15
82 mov.l r12,@-r15
83 mov.l r11,@-r15
84 mov.l r10,@-r15
85 mov.l r9,@-r15
86 mov.l r8,@-r15
87 mov.l r7,@-r15
88 mov.l r6,@-r15
89 mov.l r5,@-r15
90 mov.l r4,@-r15
91 mov r2,r8 ! copy user -> kernel stack
92 mov.l @r8+,r3
93 mov.l r3,@-r15
94 mov.l @r8+,r2
95 mov.l r2,@-r15
96 mov.l @r8+,r1
97 mov.l r1,@-r15
98 mov.l @r8+,r0
99 bra 2f
100 mov.l r0,@-r15
1011:
102 ! in kernel exception
103 mov #(22-4-4-1)*4+4,r0
104 mov r15,r2
105 sub r0,r15
106 mov.l @r2+,r0 ! old R3
107 mov.l r0,@-r15
108 mov.l @r2+,r0 ! old R2
109 mov.l r0,@-r15
110 mov.l @r2+,r0 ! old R1
111 mov.l r0,@-r15
112 mov.l @r2+,r0 ! old R0
113 mov.l r0,@-r15
114 mov.l @r2+,r3 ! old PC
115 mov.l @r2+,r0 ! old SR
116 add #-4,r2 ! exception frame stub (sr)
117 mov.l r1,@-r2 ! TRA
118 sts.l macl, @-r2
119 sts.l mach, @-r2
120 stc.l gbr, @-r2
121 mov.l r0,@-r2 ! save old SR
122 sts.l pr,@-r2
123 mov.l r3,@-r2 ! save old PC
124 mov r2,r0
125 add #8*4,r0
126 mov.l r0,@-r2 ! save old SP
127 mov.l r14,@-r2
128 mov.l r13,@-r2
129 mov.l r12,@-r2
130 mov.l r11,@-r2
131 mov.l r10,@-r2
132 mov.l r9,@-r2
133 mov.l r8,@-r2
134 mov.l r7,@-r2
135 mov.l r6,@-r2
136 mov.l r5,@-r2
137 mov.l r4,@-r2
138 mov.l @(OFF_R0,r15),r0
139 mov.l @(OFF_R1,r15),r1
140 mov.l @(OFF_R2,r15),r2
141 mov.l @(OFF_R3,r15),r3
1422:
143 mov #OFF_TRA,r8
144 add r15,r8
145 mov.l @r8,r9
146 mov #64,r8
147 cmp/hs r8,r9
148 bt interrupt_entry ! vec >= 64 is interrupt
149 mov #32,r8
150 cmp/hs r8,r9
151 bt trap_entry ! 64 > vec >= 32 is trap
152 mov.l 4f,r8
153 mov r9,r4
154 shll2 r9
155 add r9,r8
156 mov.l @r8,r8
157 mov #0,r9
158 cmp/eq r9,r8
159 bf 3f
160 mov.l 8f,r8 ! unhandled exception
1613:
162 mov.l 5f,r10
163 jmp @r8
164 lds r10,pr
165
166interrupt_entry:
167 mov r9,r4
168 mov.l 6f,r9
169 mov.l 7f,r8
170 jmp @r8
171 lds r9,pr
172
173 .align 2
1744: .long exception_handling_table
1755: .long ret_from_exception
1766: .long ret_from_irq
1777: .long do_IRQ
1788: .long do_exception_error
179
180trap_entry:
181 add #-0x10,r9
182 shll2 r9 ! TRA
183 mov #OFF_TRA,r8
184 add r15,r8
185 mov.l r9,@r8
186 mov r9,r8
187#ifdef CONFIG_TRACE_IRQFLAGS
188 mov.l 5f, r9
189 jsr @r9
190 nop
191#endif
192 sti
193 bra system_call
194 nop
195
196 .align 2
1971: .long syscall_exit
1982: .long break_point_trap_software
1993: .long NR_syscalls
2004: .long sys_call_table
201#ifdef CONFIG_TRACE_IRQFLAGS
2025: .long trace_hardirqs_on
203#endif
204
205#if defined(CONFIG_SH_STANDARD_BIOS)
206 /* Unwind the stack and jmp to the debug entry */
207debug_kernel_fw:
208 mov r15,r0
209 add #(22-4)*4-4,r0
210 ldc.l @r0+,gbr
211 lds.l @r0+,mach
212 lds.l @r0+,macl
213 mov r15,r0
214 mov.l @(OFF_SP,r0),r1
215 mov #OFF_SR,r2
216 mov.l @(r0,r2),r3
217 mov.l r3,@-r1
218 mov #OFF_SP,r2
219 mov.l @(r0,r2),r3
220 mov.l r3,@-r1
221 mov r15,r0
222 add #(22-4)*4-8,r0
223 mov.l 1f,r2
224 mov.l @r2,r2
225 stc sr,r3
226 mov.l r2,@r0
227 mov.l r3,@r0
228 mov.l r1,@(8,r0)
229 mov.l @r15+, r0
230 mov.l @r15+, r1
231 mov.l @r15+, r2
232 mov.l @r15+, r3
233 mov.l @r15+, r4
234 mov.l @r15+, r5
235 mov.l @r15+, r6
236 mov.l @r15+, r7
237 mov.l @r15+, r8
238 mov.l @r15+, r9
239 mov.l @r15+, r10
240 mov.l @r15+, r11
241 mov.l @r15+, r12
242 mov.l @r15+, r13
243 mov.l @r15+, r14
244 add #8,r15
245 lds.l @r15+, pr
246 rte
247 mov.l @r15+,r15
248 .align 2
2491: .long gdb_vbr_vector
250#endif /* CONFIG_SH_STANDARD_BIOS */
251
252ENTRY(address_error_handler)
253 mov r15,r4 ! regs
254 add #4,r4
255 mov #OFF_PC,r0
256 mov.l @(r0,r15),r6 ! pc
257 mov.l 1f,r0
258 jmp @r0
259 mov #0,r5 ! writeaccess is unknown
260 .align 2
261
2621: .long do_address_error
263
264restore_all:
265 cli
266#ifdef CONFIG_TRACE_IRQFLAGS
267 mov.l 3f, r0
268 jsr @r0
269 nop
270#endif
271 mov r15,r0
272 mov.l $cpu_mode,r2
273 mov #OFF_SR,r3
274 mov.l @(r0,r3),r1
275 mov.l r1,@r2
276 shll2 r1 ! clear MD bit
277 shlr2 r1
278 mov.l @(OFF_SP,r0),r2
279 add #-8,r2
280 mov.l r2,@(OFF_SP,r0) ! point exception frame top
281 mov.l r1,@(4,r2) ! set sr
282 mov #OFF_PC,r3
283 mov.l @(r0,r3),r1
284 mov.l r1,@r2 ! set pc
285 add #4*16+4,r0
286 lds.l @r0+,pr
287 add #4,r0 ! skip sr
288 ldc.l @r0+,gbr
289 lds.l @r0+,mach
290 lds.l @r0+,macl
291 get_current_thread_info r0, r1
292 mov.l $current_thread_info,r1
293 mov.l r0,@r1
294 mov.l @r15+,r0
295 mov.l @r15+,r1
296 mov.l @r15+,r2
297 mov.l @r15+,r3
298 mov.l @r15+,r4
299 mov.l @r15+,r5
300 mov.l @r15+,r6
301 mov.l @r15+,r7
302 mov.l @r15+,r8
303 mov.l @r15+,r9
304 mov.l @r15+,r10
305 mov.l @r15+,r11
306 mov.l @r15+,r12
307 mov.l @r15+,r13
308 mov.l @r15+,r14
309 mov.l @r15,r15
310 rte
311 nop
3122:
313 mov.l 1f,r8
314 mov.l 2f,r9
315 jmp @r9
316 lds r8,pr
317
318 .align 2
319$current_thread_info:
320 .long __current_thread_info
321$cpu_mode:
322 .long __cpu_mode
323#ifdef CONFIG_TRACE_IRQFLAGS
3243: .long trace_hardirqs_off
325#endif
326
327! common exception handler
328#include "../../entry-common.S"
329
330 .data
331! cpu operation mode
332! bit30 = MD (compatible SH3/4)
333__cpu_mode:
334 .long 0x40000000
335
336 .section .bss
337__current_thread_info:
338 .long 0
339
340ENTRY(exception_handling_table)
341 .space 4*32
diff --git a/arch/sh/kernel/cpu/sh2/ex.S b/arch/sh/kernel/cpu/sh2/ex.S
new file mode 100644
index 000000000000..6d285af7846c
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2/ex.S
@@ -0,0 +1,46 @@
1/*
2 * arch/sh/kernel/cpu/sh2/ex.S
3 *
4 * The SH-2 exception vector table
5 *
6 * Copyright (C) 2005 Yoshinori Sato
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/linkage.h>
14
15!
16! convert Exception Vector to Exception Number
17!
18exception_entry:
19no = 0
20 .rept 256
21 mov.l r0,@-sp
22 mov #no,r0
23 bra exception_trampoline
24 and #0xff,r0
25no = no + 1
26 .endr
27exception_trampoline:
28 mov.l r1,@-sp
29 mov.l $exception_handler,r1
30 jmp @r1
31
32 .align 2
33$exception_entry:
34 .long exception_entry
35$exception_handler:
36 .long exception_handler
37!
38! Exception Vector Base
39!
40 .align 2
41ENTRY(vbr_base)
42vector = 0
43 .rept 256
44 .long exception_entry + vector * 8
45vector = vector + 1
46 .endr
diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index f17a2a0d588e..ba527d9b5024 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -17,17 +17,23 @@
17 17
18int __init detect_cpu_and_cache_system(void) 18int __init detect_cpu_and_cache_system(void)
19{ 19{
20 /* 20#if defined(CONFIG_CPU_SUBTYPE_SH7604)
21 * For now, assume SH7604 .. fix this later.
22 */
23 cpu_data->type = CPU_SH7604; 21 cpu_data->type = CPU_SH7604;
24 cpu_data->dcache.ways = 4; 22 cpu_data->dcache.ways = 4;
25 cpu_data->dcache.way_shift = 6; 23 cpu_data->dcache.way_incr = (1<<10);
26 cpu_data->dcache.sets = 64; 24 cpu_data->dcache.sets = 64;
27 cpu_data->dcache.entry_shift = 4; 25 cpu_data->dcache.entry_shift = 4;
28 cpu_data->dcache.linesz = L1_CACHE_BYTES; 26 cpu_data->dcache.linesz = L1_CACHE_BYTES;
29 cpu_data->dcache.flags = 0; 27 cpu_data->dcache.flags = 0;
30 28#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
29 cpu_data->type = CPU_SH7619;
30 cpu_data->dcache.ways = 4;
31 cpu_data->dcache.way_incr = (1<<12);
32 cpu_data->dcache.sets = 256;
33 cpu_data->dcache.entry_shift = 4;
34 cpu_data->dcache.linesz = L1_CACHE_BYTES;
35 cpu_data->dcache.flags = 0;
36#endif
31 /* 37 /*
32 * SH-2 doesn't have separate caches 38 * SH-2 doesn't have separate caches
33 */ 39 */
diff --git a/arch/sh/kernel/cpu/sh2/setup-sh7619.c b/arch/sh/kernel/cpu/sh2/setup-sh7619.c
new file mode 100644
index 000000000000..82c2d905152f
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2/setup-sh7619.c
@@ -0,0 +1,53 @@
1/*
2 * SH7619 Setup
3 *
4 * Copyright (C) 2006 Yoshinori Sato
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/platform_device.h>
11#include <linux/init.h>
12#include <linux/serial.h>
13#include <asm/sci.h>
14
15static struct plat_sci_port sci_platform_data[] = {
16 {
17 .mapbase = 0xf8400000,
18 .flags = UPF_BOOT_AUTOCONF,
19 .type = PORT_SCIF,
20 .irqs = { 88, 89, 91, 90},
21 }, {
22 .mapbase = 0xf8410000,
23 .flags = UPF_BOOT_AUTOCONF,
24 .type = PORT_SCIF,
25 .irqs = { 92, 93, 95, 94},
26 }, {
27 .mapbase = 0xf8420000,
28 .flags = UPF_BOOT_AUTOCONF,
29 .type = PORT_SCIF,
30 .irqs = { 96, 97, 99, 98},
31 }, {
32 .flags = 0,
33 }
34};
35
36static struct platform_device sci_device = {
37 .name = "sh-sci",
38 .id = -1,
39 .dev = {
40 .platform_data = sci_platform_data,
41 },
42};
43
44static struct platform_device *sh7619_devices[] __initdata = {
45 &sci_device,
46};
47
48static int __init sh7619_devices_setup(void)
49{
50 return platform_add_devices(sh7619_devices,
51 ARRAY_SIZE(sh7619_devices));
52}
53__initcall(sh7619_devices_setup);
diff --git a/arch/sh/kernel/cpu/sh2a/Makefile b/arch/sh/kernel/cpu/sh2a/Makefile
new file mode 100644
index 000000000000..350972ae9410
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2a/Makefile
@@ -0,0 +1,10 @@
1#
2# Makefile for the Linux/SuperH SH-2A backends.
3#
4
5obj-y := common.o probe.o
6
7common-y += $(addprefix ../sh2/, ex.o)
8common-y += $(addprefix ../sh2/, entry.o)
9
10obj-$(CONFIG_CPU_SUBTYPE_SH7206) += setup-sh7206.o clock-sh7206.o
diff --git a/arch/sh/kernel/cpu/sh2a/clock-sh7206.c b/arch/sh/kernel/cpu/sh2a/clock-sh7206.c
new file mode 100644
index 000000000000..a9ad309c6a33
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2a/clock-sh7206.c
@@ -0,0 +1,85 @@
1/*
2 * arch/sh/kernel/cpu/sh2a/clock-sh7206.c
3 *
4 * SH7206 support for the clock framework
5 *
6 * Copyright (C) 2006 Yoshinori Sato
7 *
8 * Based on clock-sh4.c
9 * Copyright (C) 2005 Paul Mundt
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file "COPYING" in the main directory of this archive
13 * for more details.
14 */
15#include <linux/init.h>
16#include <linux/kernel.h>
17#include <asm/clock.h>
18#include <asm/freq.h>
19#include <asm/io.h>
20
21const static int pll1rate[]={1,2,3,4,6,8};
22const static int pfc_divisors[]={1,2,3,4,6,8,12};
23#define ifc_divisors pfc_divisors
24
25#if (CONFIG_SH_CLK_MD == 2)
26#define PLL2 (4)
27#elif (CONFIG_SH_CLK_MD == 6)
28#define PLL2 (2)
29#elif (CONFIG_SH_CLK_MD == 7)
30#define PLL2 (1)
31#else
32#error "Illigal Clock Mode!"
33#endif
34
35static void master_clk_init(struct clk *clk)
36{
37 clk->rate *= PLL2 * pll1rate[(ctrl_inw(FREQCR) >> 8) & 0x0007];
38}
39
40static struct clk_ops sh7206_master_clk_ops = {
41 .init = master_clk_init,
42};
43
44static void module_clk_recalc(struct clk *clk)
45{
46 int idx = (ctrl_inw(FREQCR) & 0x0007);
47 clk->rate = clk->parent->rate / pfc_divisors[idx];
48}
49
50static struct clk_ops sh7206_module_clk_ops = {
51 .recalc = module_clk_recalc,
52};
53
54static void bus_clk_recalc(struct clk *clk)
55{
56 clk->rate = clk->parent->rate / pll1rate[(ctrl_inw(FREQCR) >> 8) & 0x0007];
57}
58
59static struct clk_ops sh7206_bus_clk_ops = {
60 .recalc = bus_clk_recalc,
61};
62
63static void cpu_clk_recalc(struct clk *clk)
64{
65 int idx = (ctrl_inw(FREQCR) & 0x0007);
66 clk->rate = clk->parent->rate / ifc_divisors[idx];
67}
68
69static struct clk_ops sh7206_cpu_clk_ops = {
70 .recalc = cpu_clk_recalc,
71};
72
73static struct clk_ops *sh7206_clk_ops[] = {
74 &sh7206_master_clk_ops,
75 &sh7206_module_clk_ops,
76 &sh7206_bus_clk_ops,
77 &sh7206_cpu_clk_ops,
78};
79
80void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
81{
82 if (idx < ARRAY_SIZE(sh7206_clk_ops))
83 *ops = sh7206_clk_ops[idx];
84}
85
diff --git a/arch/sh/kernel/cpu/sh2a/probe.c b/arch/sh/kernel/cpu/sh2a/probe.c
new file mode 100644
index 000000000000..87c6c0542089
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2a/probe.c
@@ -0,0 +1,39 @@
1/*
2 * arch/sh/kernel/cpu/sh2a/probe.c
3 *
4 * CPU Subtype Probing for SH-2A.
5 *
6 * Copyright (C) 2004, 2005 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/init.h>
14#include <asm/processor.h>
15#include <asm/cache.h>
16
17int __init detect_cpu_and_cache_system(void)
18{
19 /* Just SH7206 for now .. */
20 cpu_data->type = CPU_SH7206;
21
22 cpu_data->dcache.ways = 4;
23 cpu_data->dcache.way_incr = (1 << 11);
24 cpu_data->dcache.sets = 128;
25 cpu_data->dcache.entry_shift = 4;
26 cpu_data->dcache.linesz = L1_CACHE_BYTES;
27 cpu_data->dcache.flags = 0;
28
29 /*
30 * The icache is the same as the dcache as far as this setup is
31 * concerned. The only real difference in hardware is that the icache
32 * lacks the U bit that the dcache has, none of this has any bearing
33 * on the cache info.
34 */
35 cpu_data->icache = cpu_data->dcache;
36
37 return 0;
38}
39
diff --git a/arch/sh/kernel/cpu/sh2a/setup-sh7206.c b/arch/sh/kernel/cpu/sh2a/setup-sh7206.c
new file mode 100644
index 000000000000..cdfeef49e62e
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2a/setup-sh7206.c
@@ -0,0 +1,58 @@
1/*
2 * SH7206 Setup
3 *
4 * Copyright (C) 2006 Yoshinori Sato
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/platform_device.h>
11#include <linux/init.h>
12#include <linux/serial.h>
13#include <asm/sci.h>
14
15static struct plat_sci_port sci_platform_data[] = {
16 {
17 .mapbase = 0xfffe8000,
18 .flags = UPF_BOOT_AUTOCONF,
19 .type = PORT_SCIF,
20 .irqs = { 240, 241, 242, 243},
21 }, {
22 .mapbase = 0xfffe8800,
23 .flags = UPF_BOOT_AUTOCONF,
24 .type = PORT_SCIF,
25 .irqs = { 244, 245, 246, 247},
26 }, {
27 .mapbase = 0xfffe9000,
28 .flags = UPF_BOOT_AUTOCONF,
29 .type = PORT_SCIF,
30 .irqs = { 248, 249, 250, 251},
31 }, {
32 .mapbase = 0xfffe9800,
33 .flags = UPF_BOOT_AUTOCONF,
34 .type = PORT_SCIF,
35 .irqs = { 252, 253, 254, 255},
36 }, {
37 .flags = 0,
38 }
39};
40
41static struct platform_device sci_device = {
42 .name = "sh-sci",
43 .id = -1,
44 .dev = {
45 .platform_data = sci_platform_data,
46 },
47};
48
49static struct platform_device *sh7206_devices[] __initdata = {
50 &sci_device,
51};
52
53static int __init sh7206_devices_setup(void)
54{
55 return platform_add_devices(sh7206_devices,
56 ARRAY_SIZE(sh7206_devices));
57}
58__initcall(sh7206_devices_setup);
diff --git a/arch/sh/kernel/cpu/sh3/Makefile b/arch/sh/kernel/cpu/sh3/Makefile
index 58d3815695ff..83905e4e4387 100644
--- a/arch/sh/kernel/cpu/sh3/Makefile
+++ b/arch/sh/kernel/cpu/sh3/Makefile
@@ -2,7 +2,7 @@
2# Makefile for the Linux/SuperH SH-3 backends. 2# Makefile for the Linux/SuperH SH-3 backends.
3# 3#
4 4
5obj-y := ex.o probe.o 5obj-y := ex.o probe.o entry.o
6 6
7# CPU subtype setup 7# CPU subtype setup
8obj-$(CONFIG_CPU_SUBTYPE_SH7705) += setup-sh7705.o 8obj-$(CONFIG_CPU_SUBTYPE_SH7705) += setup-sh7705.o
diff --git a/arch/sh/kernel/cpu/sh3/clock-sh7709.c b/arch/sh/kernel/cpu/sh3/clock-sh7709.c
index 10461a745e5f..b791a29fdb62 100644
--- a/arch/sh/kernel/cpu/sh3/clock-sh7709.c
+++ b/arch/sh/kernel/cpu/sh3/clock-sh7709.c
@@ -24,7 +24,7 @@ static int pfc_divisors[] = { 1, 2, 4, 1, 3, 6, 1, 1 };
24 24
25static void set_bus_parent(struct clk *clk) 25static void set_bus_parent(struct clk *clk)
26{ 26{
27 struct clk *bus_clk = clk_get("bus_clk"); 27 struct clk *bus_clk = clk_get(NULL, "bus_clk");
28 clk->parent = bus_clk; 28 clk->parent = bus_clk;
29 clk_put(bus_clk); 29 clk_put(bus_clk);
30} 30}
diff --git a/arch/sh/kernel/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index 39aaefb2d83f..8c0dc2700c69 100644
--- a/arch/sh/kernel/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -1,5 +1,5 @@
1/* 1/*
2 * linux/arch/sh/entry.S 2 * arch/sh/kernel/entry.S
3 * 3 *
4 * Copyright (C) 1999, 2000, 2002 Niibe Yutaka 4 * Copyright (C) 1999, 2000, 2002 Niibe Yutaka
5 * Copyright (C) 2003 - 2006 Paul Mundt 5 * Copyright (C) 2003 - 2006 Paul Mundt
@@ -7,15 +7,16 @@
7 * This file is subject to the terms and conditions of the GNU General Public 7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive 8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details. 9 * for more details.
10 *
11 */ 10 */
12#include <linux/sys.h> 11#include <linux/sys.h>
13#include <linux/errno.h> 12#include <linux/errno.h>
14#include <linux/linkage.h> 13#include <linux/linkage.h>
15#include <asm/asm-offsets.h> 14#include <asm/asm-offsets.h>
16#include <asm/thread_info.h> 15#include <asm/thread_info.h>
17#include <asm/cpu/mmu_context.h>
18#include <asm/unistd.h> 16#include <asm/unistd.h>
17#include <asm/cpu/mmu_context.h>
18#include <asm/pgtable.h>
19#include <asm/page.h>
19 20
20! NOTE: 21! NOTE:
21! GNU as (as of 2.9.1) changes bf/s into bt/s and bra, when the address 22! GNU as (as of 2.9.1) changes bf/s into bt/s and bra, when the address
@@ -81,6 +82,8 @@ OFF_TRA = (16*4+6*4)
81#define k_g_imask r6_bank /* r6_bank1 */ 82#define k_g_imask r6_bank /* r6_bank1 */
82#define current r7 /* r7_bank1 */ 83#define current r7 /* r7_bank1 */
83 84
85#include <asm/entry-macros.S>
86
84/* 87/*
85 * Kernel mode register usage: 88 * Kernel mode register usage:
86 * k0 scratch 89 * k0 scratch
@@ -107,26 +110,6 @@ OFF_TRA = (16*4+6*4)
107! this first version depends *much* on C implementation. 110! this first version depends *much* on C implementation.
108! 111!
109 112
110#define CLI() \
111 stc sr, r0; \
112 or #0xf0, r0; \
113 ldc r0, sr
114
115#define STI() \
116 mov.l __INV_IMASK, r11; \
117 stc sr, r10; \
118 and r11, r10; \
119 stc k_g_imask, r11; \
120 or r11, r10; \
121 ldc r10, sr
122
123#if defined(CONFIG_PREEMPT)
124# define preempt_stop() CLI()
125#else
126# define preempt_stop()
127# define resume_kernel restore_all
128#endif
129
130#if defined(CONFIG_MMU) 113#if defined(CONFIG_MMU)
131 .align 2 114 .align 2
132ENTRY(tlb_miss_load) 115ENTRY(tlb_miss_load)
@@ -155,29 +138,14 @@ ENTRY(tlb_protection_violation_store)
155 138
156call_dpf: 139call_dpf:
157 mov.l 1f, r0 140 mov.l 1f, r0
158 mov r5, r8 141 mov.l @r0, r6 ! address
159 mov.l @r0, r6
160 mov r6, r9
161 mov.l 2f, r0
162 sts pr, r10
163 jsr @r0
164 mov r15, r4
165 !
166 tst r0, r0
167 bf/s 0f
168 lds r10, pr
169 rts
170 nop
1710: STI()
172 mov.l 3f, r0 142 mov.l 3f, r0
173 mov r9, r6 143
174 mov r8, r5
175 jmp @r0 144 jmp @r0
176 mov r15, r4 145 mov r15, r4 ! regs
177 146
178 .align 2 147 .align 2
1791: .long MMU_TEA 1481: .long MMU_TEA
1802: .long __do_page_fault
1813: .long do_page_fault 1493: .long do_page_fault
182 150
183 .align 2 151 .align 2
@@ -203,32 +171,6 @@ call_dae:
2032: .long do_address_error 1712: .long do_address_error
204#endif /* CONFIG_MMU */ 172#endif /* CONFIG_MMU */
205 173
206#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
207! Handle kernel debug if either kgdb (SW) or gdb-stub (FW) is present.
208! If both are configured, handle the debug traps (breakpoints) in SW,
209! but still allow BIOS traps to FW.
210
211 .align 2
212debug_kernel:
213#if defined(CONFIG_SH_STANDARD_BIOS) && defined(CONFIG_SH_KGDB)
214 /* Force BIOS call to FW (debug_trap put TRA in r8) */
215 mov r8,r0
216 shlr2 r0
217 cmp/eq #0x3f,r0
218 bt debug_kernel_fw
219#endif /* CONFIG_SH_STANDARD_BIOS && CONFIG_SH_KGDB */
220
221debug_enter:
222#if defined(CONFIG_SH_KGDB)
223 /* Jump to kgdb, pass stacked regs as arg */
224debug_kernel_sw:
225 mov.l 3f, r0
226 jmp @r0
227 mov r15, r4
228 .align 2
2293: .long kgdb_handle_exception
230#endif /* CONFIG_SH_KGDB */
231
232#if defined(CONFIG_SH_STANDARD_BIOS) 174#if defined(CONFIG_SH_STANDARD_BIOS)
233 /* Unwind the stack and jmp to the debug entry */ 175 /* Unwind the stack and jmp to the debug entry */
234debug_kernel_fw: 176debug_kernel_fw:
@@ -269,276 +211,6 @@ debug_kernel_fw:
2692: .long gdb_vbr_vector 2112: .long gdb_vbr_vector
270#endif /* CONFIG_SH_STANDARD_BIOS */ 212#endif /* CONFIG_SH_STANDARD_BIOS */
271 213
272#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
273
274
275 .align 2
276debug_trap:
277#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
278 mov #OFF_SR, r0
279 mov.l @(r0,r15), r0 ! get status register
280 shll r0
281 shll r0 ! kernel space?
282 bt/s debug_kernel
283#endif
284 mov.l @r15, r0 ! Restore R0 value
285 mov.l 1f, r8
286 jmp @r8
287 nop
288
289 .align 2
290ENTRY(exception_error)
291 !
292 STI()
293 mov.l 2f, r0
294 jmp @r0
295 nop
296
297!
298 .align 2
2991: .long break_point_trap_software
3002: .long do_exception_error
301
302 .align 2
303ret_from_exception:
304 preempt_stop()
305ENTRY(ret_from_irq)
306 !
307 mov #OFF_SR, r0
308 mov.l @(r0,r15), r0 ! get status register
309 shll r0
310 shll r0 ! kernel space?
311 bt/s resume_kernel ! Yes, it's from kernel, go back soon
312 GET_THREAD_INFO(r8)
313
314#ifdef CONFIG_PREEMPT
315 bra resume_userspace
316 nop
317ENTRY(resume_kernel)
318 mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count
319 tst r0, r0
320 bf noresched
321need_resched:
322 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
323 tst #_TIF_NEED_RESCHED, r0 ! need_resched set?
324 bt noresched
325
326 mov #OFF_SR, r0
327 mov.l @(r0,r15), r0 ! get status register
328 and #0xf0, r0 ! interrupts off (exception path)?
329 cmp/eq #0xf0, r0
330 bt noresched
331
332 mov.l 1f, r0
333 mov.l r0, @(TI_PRE_COUNT,r8)
334
335 STI()
336 mov.l 2f, r0
337 jsr @r0
338 nop
339 mov #0, r0
340 mov.l r0, @(TI_PRE_COUNT,r8)
341 CLI()
342
343 bra need_resched
344 nop
345noresched:
346 bra restore_all
347 nop
348
349 .align 2
3501: .long PREEMPT_ACTIVE
3512: .long schedule
352#endif
353
354ENTRY(resume_userspace)
355 ! r8: current_thread_info
356 CLI()
357 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
358 tst #_TIF_WORK_MASK, r0
359 bt/s restore_all
360 tst #_TIF_NEED_RESCHED, r0
361
362 .align 2
363work_pending:
364 ! r0: current_thread_info->flags
365 ! r8: current_thread_info
366 ! t: result of "tst #_TIF_NEED_RESCHED, r0"
367 bf/s work_resched
368 tst #(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), r0
369work_notifysig:
370 bt/s restore_all
371 mov r15, r4
372 mov r12, r5 ! set arg1(save_r0)
373 mov r0, r6
374 mov.l 2f, r1
375 mova restore_all, r0
376 jmp @r1
377 lds r0, pr
378work_resched:
379#ifndef CONFIG_PREEMPT
380 ! gUSA handling
381 mov.l @(OFF_SP,r15), r0 ! get user space stack pointer
382 mov r0, r1
383 shll r0
384 bf/s 1f
385 shll r0
386 bf/s 1f
387 mov #OFF_PC, r0
388 ! SP >= 0xc0000000 : gUSA mark
389 mov.l @(r0,r15), r2 ! get user space PC (program counter)
390 mov.l @(OFF_R0,r15), r3 ! end point
391 cmp/hs r3, r2 ! r2 >= r3?
392 bt 1f
393 add r3, r1 ! rewind point #2
394 mov.l r1, @(r0,r15) ! reset PC to rewind point #2
395 !
3961:
397#endif
398 mov.l 1f, r1
399 jsr @r1 ! schedule
400 nop
401 CLI()
402 !
403 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
404 tst #_TIF_WORK_MASK, r0
405 bt restore_all
406 bra work_pending
407 tst #_TIF_NEED_RESCHED, r0
408
409 .align 2
4101: .long schedule
4112: .long do_notify_resume
412
413 .align 2
414syscall_exit_work:
415 ! r0: current_thread_info->flags
416 ! r8: current_thread_info
417 tst #_TIF_SYSCALL_TRACE, r0
418 bt/s work_pending
419 tst #_TIF_NEED_RESCHED, r0
420 STI()
421 ! XXX setup arguments...
422 mov.l 4f, r0 ! do_syscall_trace
423 jsr @r0
424 nop
425 bra resume_userspace
426 nop
427
428 .align 2
429syscall_trace_entry:
430 ! Yes it is traced.
431 ! XXX setup arguments...
432 mov.l 4f, r11 ! Call do_syscall_trace which notifies
433 jsr @r11 ! superior (will chomp R[0-7])
434 nop
435 ! Reload R0-R4 from kernel stack, where the
436 ! parent may have modified them using
437 ! ptrace(POKEUSR). (Note that R0-R2 are
438 ! used by the system call handler directly
439 ! from the kernel stack anyway, so don't need
440 ! to be reloaded here.) This allows the parent
441 ! to rewrite system calls and args on the fly.
442 mov.l @(OFF_R4,r15), r4 ! arg0
443 mov.l @(OFF_R5,r15), r5
444 mov.l @(OFF_R6,r15), r6
445 mov.l @(OFF_R7,r15), r7 ! arg3
446 mov.l @(OFF_R3,r15), r3 ! syscall_nr
447 ! Arrange for do_syscall_trace to be called
448 ! again as the system call returns.
449 mov.l 2f, r10 ! Number of syscalls
450 cmp/hs r10, r3
451 bf syscall_call
452 mov #-ENOSYS, r0
453 bra syscall_exit
454 mov.l r0, @(OFF_R0,r15) ! Return value
455
456/*
457 * Syscall interface:
458 *
459 * Syscall #: R3
460 * Arguments #0 to #3: R4--R7
461 * Arguments #4 to #6: R0, R1, R2
462 * TRA: (number of arguments + 0x10) x 4
463 *
464 * This code also handles delegating other traps to the BIOS/gdb stub
465 * according to:
466 *
467 * Trap number
468 * (TRA>>2) Purpose
469 * -------- -------
470 * 0x0-0xf old syscall ABI
471 * 0x10-0x1f new syscall ABI
472 * 0x20-0xff delegated through debug_trap to BIOS/gdb stub.
473 *
474 * Note: When we're first called, the TRA value must be shifted
475 * right 2 bits in order to get the value that was used as the "trapa"
476 * argument.
477 */
478
479 .align 2
480 .globl ret_from_fork
481ret_from_fork:
482 mov.l 1f, r8
483 jsr @r8
484 mov r0, r4
485 bra syscall_exit
486 nop
487 .align 2
4881: .long schedule_tail
489 !
490ENTRY(system_call)
491 mov.l 1f, r9
492 mov.l @r9, r8 ! Read from TRA (Trap Address) Register
493 !
494 ! Is the trap argument >= 0x20? (TRA will be >= 0x80)
495 mov #0x7f, r9
496 cmp/hi r9, r8
497 bt/s 0f
498 mov #OFF_TRA, r9
499 add r15, r9
500 !
501 mov.l r8, @r9 ! set TRA value to tra
502 STI()
503 ! Call the system call handler through the table.
504 ! First check for bad syscall number
505 mov r3, r9
506 mov.l 2f, r8 ! Number of syscalls
507 cmp/hs r8, r9
508 bf/s good_system_call
509 GET_THREAD_INFO(r8)
510syscall_badsys: ! Bad syscall number
511 mov #-ENOSYS, r0
512 bra resume_userspace
513 mov.l r0, @(OFF_R0,r15) ! Return value
514 !
5150:
516 bra debug_trap
517 nop
518 !
519good_system_call: ! Good syscall number
520 mov.l @(TI_FLAGS,r8), r8
521 mov #_TIF_SYSCALL_TRACE, r10
522 tst r10, r8
523 bf syscall_trace_entry
524 !
525syscall_call:
526 shll2 r9 ! x4
527 mov.l 3f, r8 ! Load the address of sys_call_table
528 add r8, r9
529 mov.l @r9, r8
530 jsr @r8 ! jump to specific syscall handler
531 nop
532 mov.l @(OFF_R0,r15), r12 ! save r0
533 mov.l r0, @(OFF_R0,r15) ! save the return value
534 !
535syscall_exit:
536 CLI()
537 !
538 GET_THREAD_INFO(r8)
539 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
540 tst #_TIF_ALLWORK_MASK, r0
541 bf syscall_exit_work
542restore_all: 214restore_all:
543 mov.l @r15+, r0 215 mov.l @r15+, r0
544 mov.l @r15+, r1 216 mov.l @r15+, r1
@@ -606,7 +278,9 @@ skip_restore:
606 ! 278 !
607 ! Calculate new SR value 279 ! Calculate new SR value
608 mov k3, k2 ! original SR value 280 mov k3, k2 ! original SR value
609 mov.l 9f, k1 281 mov #0xf0, k1
282 extu.b k1, k1
283 not k1, k1
610 and k1, k2 ! Mask orignal SR value 284 and k1, k2 ! Mask orignal SR value
611 ! 285 !
612 mov k3, k0 ! Calculate IMASK-bits 286 mov k3, k0 ! Calculate IMASK-bits
@@ -632,16 +306,12 @@ skip_restore:
632 nop 306 nop
633 307
634 .align 2 308 .align 2
6351: .long TRA
6362: .long NR_syscalls
6373: .long sys_call_table
6384: .long do_syscall_trace
6395: .long 0x00001000 ! DSP 3095: .long 0x00001000 ! DSP
6407: .long 0x30000000 3107: .long 0x30000000
6419:
642__INV_IMASK:
643 .long 0xffffff0f ! ~(IMASK)
644 311
312! common exception handler
313#include "../../entry-common.S"
314
645! Exception Vector Base 315! Exception Vector Base
646! 316!
647! Should be aligned page boundary. 317! Should be aligned page boundary.
@@ -661,9 +331,176 @@ general_exception:
6612: .long ret_from_exception 3312: .long ret_from_exception
662! 332!
663! 333!
334
335/* This code makes some assumptions to improve performance.
336 * Make sure they are stil true. */
337#if PTRS_PER_PGD != PTRS_PER_PTE
338#error PGD and PTE sizes don't match
339#endif
340
341/* gas doesn't flag impossible values for mov #immediate as an error */
342#if (_PAGE_PRESENT >> 2) > 0x7f
343#error cannot load PAGE_PRESENT as an immediate
344#endif
345#if _PAGE_DIRTY > 0x7f
346#error cannot load PAGE_DIRTY as an immediate
347#endif
348#if (_PAGE_PRESENT << 2) != _PAGE_ACCESSED
349#error cannot derive PAGE_ACCESSED from PAGE_PRESENT
350#endif
351
352#if defined(CONFIG_CPU_SH4)
353#define ldmmupteh(r) mov.l 8f, r
354#else
355#define ldmmupteh(r) mov #MMU_PTEH, r
356#endif
357
664 .balign 1024,0,1024 358 .balign 1024,0,1024
665tlb_miss: 359tlb_miss:
666 mov.l 1f, k2 360#ifdef COUNT_EXCEPTIONS
361 ! Increment the counts
362 mov.l 9f, k1
363 mov.l @k1, k2
364 add #1, k2
365 mov.l k2, @k1
366#endif
367
368 ! k0 scratch
369 ! k1 pgd and pte pointers
370 ! k2 faulting address
371 ! k3 pgd and pte index masks
372 ! k4 shift
373
374 ! Load up the pgd entry (k1)
375
376 ldmmupteh(k0) ! 9 LS (latency=2) MMU_PTEH
377
378 mov.w 4f, k3 ! 8 LS (latency=2) (PTRS_PER_PGD-1) << 2
379 mov #-(PGDIR_SHIFT-2), k4 ! 6 EX
380
381 mov.l @(MMU_TEA-MMU_PTEH,k0), k2 ! 18 LS (latency=2)
382
383 mov.l @(MMU_TTB-MMU_PTEH,k0), k1 ! 18 LS (latency=2)
384
385 mov k2, k0 ! 5 MT (latency=0)
386 shld k4, k0 ! 99 EX
387
388 and k3, k0 ! 78 EX
389
390 mov.l @(k0, k1), k1 ! 21 LS (latency=2)
391 mov #-(PAGE_SHIFT-2), k4 ! 6 EX
392
393 ! Load up the pte entry (k2)
394
395 mov k2, k0 ! 5 MT (latency=0)
396 shld k4, k0 ! 99 EX
397
398 tst k1, k1 ! 86 MT
399
400 bt 20f ! 110 BR
401
402 and k3, k0 ! 78 EX
403 mov.w 5f, k4 ! 8 LS (latency=2) _PAGE_PRESENT
404
405 mov.l @(k0, k1), k2 ! 21 LS (latency=2)
406 add k0, k1 ! 49 EX
407
408#ifdef CONFIG_CPU_HAS_PTEA
409 ! Test the entry for present and _PAGE_ACCESSED
410
411 mov #-28, k3 ! 6 EX
412 mov k2, k0 ! 5 MT (latency=0)
413
414 tst k4, k2 ! 68 MT
415 shld k3, k0 ! 99 EX
416
417 bt 20f ! 110 BR
418
419 ! Set PTEA register
420 ! MMU_PTEA = ((pteval >> 28) & 0xe) | (pteval & 0x1)
421 !
422 ! k0=pte>>28, k1=pte*, k2=pte, k3=<unused>, k4=_PAGE_PRESENT
423
424 and #0xe, k0 ! 79 EX
425
426 mov k0, k3 ! 5 MT (latency=0)
427 mov k2, k0 ! 5 MT (latency=0)
428
429 and #1, k0 ! 79 EX
430
431 or k0, k3 ! 82 EX
432
433 ldmmupteh(k0) ! 9 LS (latency=2)
434 shll2 k4 ! 101 EX _PAGE_ACCESSED
435
436 tst k4, k2 ! 68 MT
437
438 mov.l k3, @(MMU_PTEA-MMU_PTEH,k0) ! 27 LS
439
440 mov.l 7f, k3 ! 9 LS (latency=2) _PAGE_FLAGS_HARDWARE_MASK
441
442 ! k0=MMU_PTEH, k1=pte*, k2=pte, k3=_PAGE_FLAGS_HARDWARE, k4=_PAGE_ACCESSED
443#else
444
445 ! Test the entry for present and _PAGE_ACCESSED
446
447 mov.l 7f, k3 ! 9 LS (latency=2) _PAGE_FLAGS_HARDWARE_MASK
448 tst k4, k2 ! 68 MT
449
450 shll2 k4 ! 101 EX _PAGE_ACCESSED
451 ldmmupteh(k0) ! 9 LS (latency=2)
452
453 bt 20f ! 110 BR
454 tst k4, k2 ! 68 MT
455
456 ! k0=MMU_PTEH, k1=pte*, k2=pte, k3=_PAGE_FLAGS_HARDWARE, k4=_PAGE_ACCESSED
457
458#endif
459
460 ! Set up the entry
461
462 and k2, k3 ! 78 EX
463 bt/s 10f ! 108 BR
464
465 mov.l k3, @(MMU_PTEL-MMU_PTEH,k0) ! 27 LS
466
467 ldtlb ! 128 CO
468
469 ! At least one instruction between ldtlb and rte
470 nop ! 119 NOP
471
472 rte ! 126 CO
473
474 nop ! 119 NOP
475
476
47710: or k4, k2 ! 82 EX
478
479 ldtlb ! 128 CO
480
481 ! At least one instruction between ldtlb and rte
482 mov.l k2, @k1 ! 27 LS
483
484 rte ! 126 CO
485
486 ! Note we cannot execute mov here, because it is executed after
487 ! restoring SSR, so would be executed in user space.
488 nop ! 119 NOP
489
490
491 .align 5
492 ! Once cache line if possible...
4931: .long swapper_pg_dir
4944: .short (PTRS_PER_PGD-1) << 2
4955: .short _PAGE_PRESENT
4967: .long _PAGE_FLAGS_HARDWARE_MASK
4978: .long MMU_PTEH
498#ifdef COUNT_EXCEPTIONS
4999: .long exception_count_miss
500#endif
501
502 ! Either pgd or pte not present
50320: mov.l 1f, k2
667 mov.l 4f, k3 504 mov.l 4f, k3
668 bra handle_exception 505 bra handle_exception
669 mov.l @k2, k2 506 mov.l @k2, k2
@@ -710,8 +547,9 @@ ENTRY(handle_exception)
710 bt/s 1f ! It's a kernel to kernel transition. 547 bt/s 1f ! It's a kernel to kernel transition.
711 mov r15, k0 ! save original stack to k0 548 mov r15, k0 ! save original stack to k0
712 /* User space to kernel */ 549 /* User space to kernel */
713 mov #(THREAD_SIZE >> 8), k1 550 mov #(THREAD_SIZE >> 10), k1
714 shll8 k1 ! k1 := THREAD_SIZE 551 shll8 k1 ! k1 := THREAD_SIZE
552 shll2 k1
715 add current, k1 553 add current, k1
716 mov k1, r15 ! change to kernel stack 554 mov k1, r15 ! change to kernel stack
717 ! 555 !
@@ -761,7 +599,7 @@ skip_save:
761 ! Save the user registers on the stack. 599 ! Save the user registers on the stack.
762 mov.l k2, @-r15 ! EXPEVT 600 mov.l k2, @-r15 ! EXPEVT
763 601
764 mov #-1, k4 602 mov #-1, k4
765 mov.l k4, @-r15 ! set TRA (default: -1) 603 mov.l k4, @-r15 ! set TRA (default: -1)
766 ! 604 !
767 sts.l macl, @-r15 605 sts.l macl, @-r15
@@ -813,6 +651,15 @@ skip_save:
813 bf interrupt_exception 651 bf interrupt_exception
814 shlr2 r8 652 shlr2 r8
815 shlr r8 653 shlr r8
654
655#ifdef COUNT_EXCEPTIONS
656 mov.l 5f, r9
657 add r8, r9
658 mov.l @r9, r10
659 add #1, r10
660 mov.l r10, @r9
661#endif
662
816 mov.l 4f, r9 663 mov.l 4f, r9
817 add r8, r9 664 add r8, r9
818 mov.l @r9, r9 665 mov.l @r9, r9
@@ -826,6 +673,9 @@ skip_save:
8262: .long 0x000080f0 ! FD=1, IMASK=15 6732: .long 0x000080f0 ! FD=1, IMASK=15
8273: .long 0xcfffffff ! RB=0, BL=0 6743: .long 0xcfffffff ! RB=0, BL=0
8284: .long exception_handling_table 6754: .long exception_handling_table
676#ifdef COUNT_EXCEPTIONS
6775: .long exception_count_table
678#endif
829 679
830interrupt_exception: 680interrupt_exception:
831 mov.l 1f, r9 681 mov.l 1f, r9
diff --git a/arch/sh/kernel/cpu/sh4/Makefile b/arch/sh/kernel/cpu/sh4/Makefile
index 8dbf3895ece7..6e415baf04b4 100644
--- a/arch/sh/kernel/cpu/sh4/Makefile
+++ b/arch/sh/kernel/cpu/sh4/Makefile
@@ -2,7 +2,8 @@
2# Makefile for the Linux/SuperH SH-4 backends. 2# Makefile for the Linux/SuperH SH-4 backends.
3# 3#
4 4
5obj-y := ex.o probe.o 5obj-y := ex.o probe.o common.o
6common-y += $(addprefix ../sh3/, entry.o)
6 7
7obj-$(CONFIG_SH_FPU) += fpu.o 8obj-$(CONFIG_SH_FPU) += fpu.o
8obj-$(CONFIG_SH_STORE_QUEUES) += sq.o 9obj-$(CONFIG_SH_STORE_QUEUES) += sq.o
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
index bfdf5fe8d948..fa2019aabd74 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
@@ -97,7 +97,7 @@ static void shoc_clk_recalc(struct clk *clk)
97 97
98static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate) 98static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate)
99{ 99{
100 struct clk *bclk = clk_get("bus_clk"); 100 struct clk *bclk = clk_get(NULL, "bus_clk");
101 unsigned long bclk_rate = clk_get_rate(bclk); 101 unsigned long bclk_rate = clk_get_rate(bclk);
102 102
103 clk_put(bclk); 103 clk_put(bclk);
@@ -151,7 +151,7 @@ static struct clk *sh4202_onchip_clocks[] = {
151 151
152static int __init sh4202_clk_init(void) 152static int __init sh4202_clk_init(void)
153{ 153{
154 struct clk *clk = clk_get("master_clk"); 154 struct clk *clk = clk_get(NULL, "master_clk");
155 int i; 155 int i;
156 156
157 for (i = 0; i < ARRAY_SIZE(sh4202_onchip_clocks); i++) { 157 for (i = 0; i < ARRAY_SIZE(sh4202_onchip_clocks); i++) {
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh7780.c b/arch/sh/kernel/cpu/sh4/clock-sh7780.c
index 93ad367342c9..9e6a216750c8 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh7780.c
@@ -98,7 +98,7 @@ static struct clk *sh7780_onchip_clocks[] = {
98 98
99static int __init sh7780_clk_init(void) 99static int __init sh7780_clk_init(void)
100{ 100{
101 struct clk *clk = clk_get("master_clk"); 101 struct clk *clk = clk_get(NULL, "master_clk");
102 int i; 102 int i;
103 103
104 for (i = 0; i < ARRAY_SIZE(sh7780_onchip_clocks); i++) { 104 for (i = 0; i < ARRAY_SIZE(sh7780_onchip_clocks); i++) {
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index f486c07e10e2..7624677f6628 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -282,11 +282,8 @@ ieee_fpe_handler (struct pt_regs *regs)
282 grab_fpu(regs); 282 grab_fpu(regs);
283 restore_fpu(tsk); 283 restore_fpu(tsk);
284 set_tsk_thread_flag(tsk, TIF_USEDFPU); 284 set_tsk_thread_flag(tsk, TIF_USEDFPU);
285 } else { 285 } else
286 tsk->thread.trap_no = 11;
287 tsk->thread.error_code = 0;
288 force_sig(SIGFPE, tsk); 286 force_sig(SIGFPE, tsk);
289 }
290 287
291 regs->pc = nextpc; 288 regs->pc = nextpc;
292 return 1; 289 return 1;
@@ -296,29 +293,29 @@ ieee_fpe_handler (struct pt_regs *regs)
296} 293}
297 294
298asmlinkage void 295asmlinkage void
299do_fpu_error(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7, 296do_fpu_error(unsigned long r4, unsigned long r5, unsigned long r6,
300 struct pt_regs regs) 297 unsigned long r7, struct pt_regs __regs)
301{ 298{
299 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
302 struct task_struct *tsk = current; 300 struct task_struct *tsk = current;
303 301
304 if (ieee_fpe_handler (&regs)) 302 if (ieee_fpe_handler(regs))
305 return; 303 return;
306 304
307 regs.pc += 2; 305 regs->pc += 2;
308 save_fpu(tsk, &regs); 306 save_fpu(tsk, regs);
309 tsk->thread.trap_no = 11;
310 tsk->thread.error_code = 0;
311 force_sig(SIGFPE, tsk); 307 force_sig(SIGFPE, tsk);
312} 308}
313 309
314asmlinkage void 310asmlinkage void
315do_fpu_state_restore(unsigned long r4, unsigned long r5, unsigned long r6, 311do_fpu_state_restore(unsigned long r4, unsigned long r5, unsigned long r6,
316 unsigned long r7, struct pt_regs regs) 312 unsigned long r7, struct pt_regs __regs)
317{ 313{
314 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
318 struct task_struct *tsk = current; 315 struct task_struct *tsk = current;
319 316
320 grab_fpu(&regs); 317 grab_fpu(regs);
321 if (!user_mode(&regs)) { 318 if (!user_mode(regs)) {
322 printk(KERN_ERR "BUG: FPU is used in kernel mode.\n"); 319 printk(KERN_ERR "BUG: FPU is used in kernel mode.\n");
323 return; 320 return;
324 } 321 }
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index c294de1e14a3..afe0f1b1c030 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -79,16 +79,16 @@ int __init detect_cpu_and_cache_system(void)
79 case 0x205: 79 case 0x205:
80 cpu_data->type = CPU_SH7750; 80 cpu_data->type = CPU_SH7750;
81 cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU | 81 cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
82 CPU_HAS_PERF_COUNTER | CPU_HAS_PTEA; 82 CPU_HAS_PERF_COUNTER;
83 break; 83 break;
84 case 0x206: 84 case 0x206:
85 cpu_data->type = CPU_SH7750S; 85 cpu_data->type = CPU_SH7750S;
86 cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU | 86 cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
87 CPU_HAS_PERF_COUNTER | CPU_HAS_PTEA; 87 CPU_HAS_PERF_COUNTER;
88 break; 88 break;
89 case 0x1100: 89 case 0x1100:
90 cpu_data->type = CPU_SH7751; 90 cpu_data->type = CPU_SH7751;
91 cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA; 91 cpu_data->flags |= CPU_HAS_FPU;
92 break; 92 break;
93 case 0x2000: 93 case 0x2000:
94 cpu_data->type = CPU_SH73180; 94 cpu_data->type = CPU_SH73180;
@@ -126,23 +126,22 @@ int __init detect_cpu_and_cache_system(void)
126 break; 126 break;
127 case 0x8000: 127 case 0x8000:
128 cpu_data->type = CPU_ST40RA; 128 cpu_data->type = CPU_ST40RA;
129 cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA; 129 cpu_data->flags |= CPU_HAS_FPU;
130 break; 130 break;
131 case 0x8100: 131 case 0x8100:
132 cpu_data->type = CPU_ST40GX1; 132 cpu_data->type = CPU_ST40GX1;
133 cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA; 133 cpu_data->flags |= CPU_HAS_FPU;
134 break; 134 break;
135 case 0x700: 135 case 0x700:
136 cpu_data->type = CPU_SH4_501; 136 cpu_data->type = CPU_SH4_501;
137 cpu_data->icache.ways = 2; 137 cpu_data->icache.ways = 2;
138 cpu_data->dcache.ways = 2; 138 cpu_data->dcache.ways = 2;
139 cpu_data->flags |= CPU_HAS_PTEA;
140 break; 139 break;
141 case 0x600: 140 case 0x600:
142 cpu_data->type = CPU_SH4_202; 141 cpu_data->type = CPU_SH4_202;
143 cpu_data->icache.ways = 2; 142 cpu_data->icache.ways = 2;
144 cpu_data->dcache.ways = 2; 143 cpu_data->dcache.ways = 2;
145 cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA; 144 cpu_data->flags |= CPU_HAS_FPU;
146 break; 145 break;
147 case 0x500 ... 0x501: 146 case 0x500 ... 0x501:
148 switch (prr) { 147 switch (prr) {
@@ -160,7 +159,7 @@ int __init detect_cpu_and_cache_system(void)
160 cpu_data->icache.ways = 2; 159 cpu_data->icache.ways = 2;
161 cpu_data->dcache.ways = 2; 160 cpu_data->dcache.ways = 2;
162 161
163 cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA; 162 cpu_data->flags |= CPU_HAS_FPU;
164 163
165 break; 164 break;
166 default: 165 default:
@@ -173,6 +172,10 @@ int __init detect_cpu_and_cache_system(void)
173 cpu_data->dcache.ways = 1; 172 cpu_data->dcache.ways = 1;
174#endif 173#endif
175 174
175#ifdef CONFIG_CPU_HAS_PTEA
176 cpu_data->flags |= CPU_HAS_PTEA;
177#endif
178
176 /* 179 /*
177 * On anything that's not a direct-mapped cache, look to the CVR 180 * On anything that's not a direct-mapped cache, look to the CVR
178 * for I/D-cache specifics. 181 * for I/D-cache specifics.
diff --git a/arch/sh/kernel/cpu/sh4/setup-sh7750.c b/arch/sh/kernel/cpu/sh4/setup-sh7750.c
index 50812d57c1c1..bbcb06f18b04 100644
--- a/arch/sh/kernel/cpu/sh4/setup-sh7750.c
+++ b/arch/sh/kernel/cpu/sh4/setup-sh7750.c
@@ -2,6 +2,7 @@
2 * SH7750/SH7751 Setup 2 * SH7750/SH7751 Setup
3 * 3 *
4 * Copyright (C) 2006 Paul Mundt 4 * Copyright (C) 2006 Paul Mundt
5 * Copyright (C) 2006 Jamie Lenehan
5 * 6 *
6 * This file is subject to the terms and conditions of the GNU General Public 7 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive 8 * License. See the file "COPYING" in the main directory of this archive
@@ -10,6 +11,7 @@
10#include <linux/platform_device.h> 11#include <linux/platform_device.h>
11#include <linux/init.h> 12#include <linux/init.h>
12#include <linux/serial.h> 13#include <linux/serial.h>
14#include <linux/io.h>
13#include <asm/sci.h> 15#include <asm/sci.h>
14 16
15static struct plat_sci_port sci_platform_data[] = { 17static struct plat_sci_port sci_platform_data[] = {
@@ -46,3 +48,71 @@ static int __init sh7750_devices_setup(void)
46 ARRAY_SIZE(sh7750_devices)); 48 ARRAY_SIZE(sh7750_devices));
47} 49}
48__initcall(sh7750_devices_setup); 50__initcall(sh7750_devices_setup);
51
52static struct ipr_data sh7750_ipr_map[] = {
53 /* IRQ, IPR-idx, shift, priority */
54 { 16, 0, 12, 2 }, /* TMU0 TUNI*/
55 { 17, 0, 12, 2 }, /* TMU1 TUNI */
56 { 18, 0, 4, 2 }, /* TMU2 TUNI */
57 { 19, 0, 4, 2 }, /* TMU2 TIPCI */
58 { 27, 1, 12, 2 }, /* WDT ITI */
59 { 20, 0, 0, 2 }, /* RTC ATI (alarm) */
60 { 21, 0, 0, 2 }, /* RTC PRI (period) */
61 { 22, 0, 0, 2 }, /* RTC CUI (carry) */
62 { 23, 1, 4, 3 }, /* SCI ERI */
63 { 24, 1, 4, 3 }, /* SCI RXI */
64 { 25, 1, 4, 3 }, /* SCI TXI */
65 { 40, 2, 4, 3 }, /* SCIF ERI */
66 { 41, 2, 4, 3 }, /* SCIF RXI */
67 { 42, 2, 4, 3 }, /* SCIF BRI */
68 { 43, 2, 4, 3 }, /* SCIF TXI */
69 { 34, 2, 8, 7 }, /* DMAC DMTE0 */
70 { 35, 2, 8, 7 }, /* DMAC DMTE1 */
71 { 36, 2, 8, 7 }, /* DMAC DMTE2 */
72 { 37, 2, 8, 7 }, /* DMAC DMTE3 */
73 { 28, 2, 8, 7 }, /* DMAC DMAE */
74};
75
76static struct ipr_data sh7751_ipr_map[] = {
77 { 44, 2, 8, 7 }, /* DMAC DMTE4 */
78 { 45, 2, 8, 7 }, /* DMAC DMTE5 */
79 { 46, 2, 8, 7 }, /* DMAC DMTE6 */
80 { 47, 2, 8, 7 }, /* DMAC DMTE7 */
81 /* The following use INTC_INPRI00 for masking, which is a 32-bit
82 register, not a 16-bit register like the IPRx registers, so it
83 would need special support */
84 /*{ 72, INTPRI00, 8, ? },*/ /* TMU3 TUNI */
85 /*{ 76, INTPRI00, 12, ? },*/ /* TMU4 TUNI */
86};
87
88static unsigned long ipr_offsets[] = {
89 0xffd00004UL, /* 0: IPRA */
90 0xffd00008UL, /* 1: IPRB */
91 0xffd0000cUL, /* 2: IPRC */
92 0xffd00010UL, /* 3: IPRD */
93};
94
95/* given the IPR index return the address of the IPR register */
96unsigned int map_ipridx_to_addr(int idx)
97{
98 if (idx >= ARRAY_SIZE(ipr_offsets))
99 return 0;
100 return ipr_offsets[idx];
101}
102
103#define INTC_ICR 0xffd00000UL
104#define INTC_ICR_IRLM (1<<7)
105
106/* enable individual interrupt mode for external interupts */
107void ipr_irq_enable_irlm(void)
108{
109 ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
110}
111
112void __init init_IRQ_ipr()
113{
114 make_ipr_irq(sh7750_ipr_map, ARRAY_SIZE(sh7750_ipr_map));
115#ifdef CONFIG_CPU_SUBTYPE_SH7751
116 make_ipr_irq(sh7751_ipr_map, ARRAY_SIZE(sh7751_ipr_map));
117#endif
118}
diff --git a/arch/sh/kernel/cpu/sh4/setup-sh7780.c b/arch/sh/kernel/cpu/sh4/setup-sh7780.c
index 814ddb226531..9aeaa2ddaa28 100644
--- a/arch/sh/kernel/cpu/sh4/setup-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4/setup-sh7780.c
@@ -79,25 +79,27 @@ static int __init sh7780_devices_setup(void)
79__initcall(sh7780_devices_setup); 79__initcall(sh7780_devices_setup);
80 80
81static struct intc2_data intc2_irq_table[] = { 81static struct intc2_data intc2_irq_table[] = {
82 { TIMER_IRQ, 0, 24, 0, INTC_TMU0_MSK, 2 }, 82 { 28, 0, 24, 0, 0, 2 }, /* TMU0 */
83 { 21, 1, 0, 0, INTC_RTC_MSK, TIMER_PRIORITY },
84 { 22, 1, 1, 0, INTC_RTC_MSK, TIMER_PRIORITY },
85 { 23, 1, 2, 0, INTC_RTC_MSK, TIMER_PRIORITY },
86 { SCIF0_ERI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
87 { SCIF0_RXI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
88 { SCIF0_BRI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
89 { SCIF0_TXI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
90 83
91 { SCIF1_ERI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY }, 84 { 21, 1, 0, 0, 2, 2 },
92 { SCIF1_RXI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY }, 85 { 22, 1, 1, 0, 2, 2 },
93 { SCIF1_BRI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY }, 86 { 23, 1, 2, 0, 2, 2 },
94 { SCIF1_TXI_IRQ, 8, 16, 0, INTC_SCIF1_MSK, SCIF1_PRIORITY },
95 87
96 { PCIC0_IRQ, 0x10, 8, 0, INTC_PCIC0_MSK, PCIC0_PRIORITY }, 88 { 40, 8, 24, 0, 3, 3 }, /* SCIF0 ERI */
97 { PCIC1_IRQ, 0x10, 0, 0, INTC_PCIC1_MSK, PCIC1_PRIORITY }, 89 { 41, 8, 24, 0, 3, 3 }, /* SCIF0 RXI */
98 { PCIC2_IRQ, 0x14, 24, 0, INTC_PCIC2_MSK, PCIC2_PRIORITY }, 90 { 42, 8, 24, 0, 3, 3 }, /* SCIF0 BRI */
99 { PCIC3_IRQ, 0x14, 16, 0, INTC_PCIC3_MSK, PCIC3_PRIORITY }, 91 { 43, 8, 24, 0, 3, 3 }, /* SCIF0 TXI */
100 { PCIC4_IRQ, 0x14, 8, 0, INTC_PCIC4_MSK, PCIC4_PRIORITY }, 92
93 { 76, 8, 16, 0, 4, 3 }, /* SCIF1 ERI */
94 { 77, 8, 16, 0, 4, 3 }, /* SCIF1 RXI */
95 { 78, 8, 16, 0, 4, 3 }, /* SCIF1 BRI */
96 { 79, 8, 16, 0, 4, 3 }, /* SCIF1 TXI */
97
98 { 64, 0x10, 8, 0, 14, 2 }, /* PCIC0 */
99 { 65, 0x10, 0, 0, 15, 2 }, /* PCIC1 */
100 { 66, 0x14, 24, 0, 16, 2 }, /* PCIC2 */
101 { 67, 0x14, 16, 0, 17, 2 }, /* PCIC3 */
102 { 68, 0x14, 8, 0, 18, 2 }, /* PCIC4 */
101}; 103};
102 104
103void __init init_IRQ_intc2(void) 105void __init init_IRQ_intc2(void)
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index 7bcc73f9b8df..55f43506995a 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -19,7 +19,7 @@
19#include <linux/slab.h> 19#include <linux/slab.h>
20#include <linux/vmalloc.h> 20#include <linux/vmalloc.h>
21#include <linux/mm.h> 21#include <linux/mm.h>
22#include <asm/io.h> 22#include <linux/io.h>
23#include <asm/page.h> 23#include <asm/page.h>
24#include <asm/cacheflush.h> 24#include <asm/cacheflush.h>
25#include <asm/cpu/sq.h> 25#include <asm/cpu/sq.h>
@@ -67,6 +67,7 @@ void sq_flush_range(unsigned long start, unsigned int len)
67 /* Wait for completion */ 67 /* Wait for completion */
68 store_queue_barrier(); 68 store_queue_barrier();
69} 69}
70EXPORT_SYMBOL(sq_flush_range);
70 71
71static inline void sq_mapping_list_add(struct sq_mapping *map) 72static inline void sq_mapping_list_add(struct sq_mapping *map)
72{ 73{
@@ -166,7 +167,7 @@ unsigned long sq_remap(unsigned long phys, unsigned int size,
166 map->size = size; 167 map->size = size;
167 map->name = name; 168 map->name = name;
168 169
169 page = bitmap_find_free_region(sq_bitmap, 0x04000000, 170 page = bitmap_find_free_region(sq_bitmap, 0x04000000 >> PAGE_SHIFT,
170 get_order(map->size)); 171 get_order(map->size));
171 if (unlikely(page < 0)) { 172 if (unlikely(page < 0)) {
172 ret = -ENOSPC; 173 ret = -ENOSPC;
@@ -193,6 +194,7 @@ out:
193 kmem_cache_free(sq_cache, map); 194 kmem_cache_free(sq_cache, map);
194 return ret; 195 return ret;
195} 196}
197EXPORT_SYMBOL(sq_remap);
196 198
197/** 199/**
198 * sq_unmap - Unmap a Store Queue allocation 200 * sq_unmap - Unmap a Store Queue allocation
@@ -234,6 +236,7 @@ void sq_unmap(unsigned long vaddr)
234 236
235 kmem_cache_free(sq_cache, map); 237 kmem_cache_free(sq_cache, map);
236} 238}
239EXPORT_SYMBOL(sq_unmap);
237 240
238/* 241/*
239 * Needlessly complex sysfs interface. Unfortunately it doesn't seem like 242 * Needlessly complex sysfs interface. Unfortunately it doesn't seem like
@@ -402,7 +405,3 @@ module_exit(sq_api_exit);
402MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>, M. R. Brown <mrbrown@0xd6.org>"); 405MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>, M. R. Brown <mrbrown@0xd6.org>");
403MODULE_DESCRIPTION("Simple API for SH-4 integrated Store Queues"); 406MODULE_DESCRIPTION("Simple API for SH-4 integrated Store Queues");
404MODULE_LICENSE("GPL"); 407MODULE_LICENSE("GPL");
405
406EXPORT_SYMBOL(sq_remap);
407EXPORT_SYMBOL(sq_unmap);
408EXPORT_SYMBOL(sq_flush_range);
diff --git a/arch/sh/kernel/early_printk.c b/arch/sh/kernel/early_printk.c
index a00022722e9e..60340823798a 100644
--- a/arch/sh/kernel/early_printk.c
+++ b/arch/sh/kernel/early_printk.c
@@ -12,7 +12,7 @@
12#include <linux/console.h> 12#include <linux/console.h>
13#include <linux/tty.h> 13#include <linux/tty.h>
14#include <linux/init.h> 14#include <linux/init.h>
15#include <asm/io.h> 15#include <linux/io.h>
16 16
17#ifdef CONFIG_SH_STANDARD_BIOS 17#ifdef CONFIG_SH_STANDARD_BIOS
18#include <asm/sh_bios.h> 18#include <asm/sh_bios.h>
@@ -62,17 +62,9 @@ static struct console bios_console = {
62#include <linux/serial_core.h> 62#include <linux/serial_core.h>
63#include "../../../drivers/serial/sh-sci.h" 63#include "../../../drivers/serial/sh-sci.h"
64 64
65#ifdef CONFIG_CPU_SH4
66#define SCIF_REG 0xffe80000
67#elif defined(CONFIG_CPU_SUBTYPE_SH72060)
68#define SCIF_REG 0xfffe9800
69#else
70#error "Undefined SCIF for this subtype"
71#endif
72
73static struct uart_port scif_port = { 65static struct uart_port scif_port = {
74 .mapbase = SCIF_REG, 66 .mapbase = CONFIG_EARLY_SCIF_CONSOLE_PORT,
75 .membase = (char __iomem *)SCIF_REG, 67 .membase = (char __iomem *)CONFIG_EARLY_SCIF_CONSOLE_PORT,
76}; 68};
77 69
78static void scif_sercon_putc(int c) 70static void scif_sercon_putc(int c)
@@ -113,23 +105,29 @@ static struct console scif_console = {
113 .index = -1, 105 .index = -1,
114}; 106};
115 107
108#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_SH_STANDARD_BIOS)
109/*
110 * Simple SCIF init, primarily aimed at SH7750 and other similar SH-4
111 * devices that aren't using sh-ipl+g.
112 */
116static void scif_sercon_init(int baud) 113static void scif_sercon_init(int baud)
117{ 114{
118 ctrl_outw(0, SCIF_REG + 8); 115 ctrl_outw(0, scif_port.mapbase + 8);
119 ctrl_outw(0, SCIF_REG); 116 ctrl_outw(0, scif_port.mapbase);
120 117
121 /* Set baud rate */ 118 /* Set baud rate */
122 ctrl_outb((CONFIG_SH_PCLK_FREQ + 16 * baud) / 119 ctrl_outb((CONFIG_SH_PCLK_FREQ + 16 * baud) /
123 (32 * baud) - 1, SCIF_REG + 4); 120 (32 * baud) - 1, scif_port.mapbase + 4);
124 121
125 ctrl_outw(12, SCIF_REG + 24); 122 ctrl_outw(12, scif_port.mapbase + 24);
126 ctrl_outw(8, SCIF_REG + 24); 123 ctrl_outw(8, scif_port.mapbase + 24);
127 ctrl_outw(0, SCIF_REG + 32); 124 ctrl_outw(0, scif_port.mapbase + 32);
128 ctrl_outw(0x60, SCIF_REG + 16); 125 ctrl_outw(0x60, scif_port.mapbase + 16);
129 ctrl_outw(0, SCIF_REG + 36); 126 ctrl_outw(0, scif_port.mapbase + 36);
130 ctrl_outw(0x30, SCIF_REG + 8); 127 ctrl_outw(0x30, scif_port.mapbase + 8);
131} 128}
132#endif 129#endif /* CONFIG_CPU_SH4 && !CONFIG_SH_STANDARD_BIOS */
130#endif /* CONFIG_EARLY_SCIF_CONSOLE */
133 131
134/* 132/*
135 * Setup a default console, if more than one is compiled in, rely on the 133 * Setup a default console, if more than one is compiled in, rely on the
@@ -168,7 +166,7 @@ int __init setup_early_printk(char *opt)
168 if (!strncmp(buf, "serial", 6)) { 166 if (!strncmp(buf, "serial", 6)) {
169 early_console = &scif_console; 167 early_console = &scif_console;
170 168
171#ifdef CONFIG_CPU_SH4 169#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_SH_STANDARD_BIOS)
172 scif_sercon_init(115200); 170 scif_sercon_init(115200);
173#endif 171#endif
174 } 172 }
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
new file mode 100644
index 000000000000..29136a35d7c7
--- /dev/null
+++ b/arch/sh/kernel/entry-common.S
@@ -0,0 +1,433 @@
1/* $Id: entry.S,v 1.37 2004/06/11 13:02:46 doyu Exp $
2 *
3 * linux/arch/sh/entry.S
4 *
5 * Copyright (C) 1999, 2000, 2002 Niibe Yutaka
6 * Copyright (C) 2003 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 *
12 */
13
14! NOTE:
15! GNU as (as of 2.9.1) changes bf/s into bt/s and bra, when the address
16! to be jumped is too far, but it causes illegal slot exception.
17
18/*
19 * entry.S contains the system-call and fault low-level handling routines.
20 * This also contains the timer-interrupt handler, as well as all interrupts
21 * and faults that can result in a task-switch.
22 *
23 * NOTE: This code handles signal-recognition, which happens every time
24 * after a timer-interrupt and after each system call.
25 *
26 * NOTE: This code uses a convention that instructions in the delay slot
27 * of a transfer-control instruction are indented by an extra space, thus:
28 *
29 * jmp @k0 ! control-transfer instruction
30 * ldc k1, ssr ! delay slot
31 *
32 * Stack layout in 'ret_from_syscall':
33 * ptrace needs to have all regs on the stack.
34 * if the order here is changed, it needs to be
35 * updated in ptrace.c and ptrace.h
36 *
37 * r0
38 * ...
39 * r15 = stack pointer
40 * spc
41 * pr
42 * ssr
43 * gbr
44 * mach
45 * macl
46 * syscall #
47 *
48 */
49
50#if defined(CONFIG_PREEMPT)
51# define preempt_stop() cli
52#else
53# define preempt_stop()
54# define resume_kernel __restore_all
55#endif
56
57#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
58! Handle kernel debug if either kgdb (SW) or gdb-stub (FW) is present.
59! If both are configured, handle the debug traps (breakpoints) in SW,
60! but still allow BIOS traps to FW.
61
62 .align 2
63debug_kernel:
64#if defined(CONFIG_SH_STANDARD_BIOS) && defined(CONFIG_SH_KGDB)
65 /* Force BIOS call to FW (debug_trap put TRA in r8) */
66 mov r8,r0
67 shlr2 r0
68 cmp/eq #0x3f,r0
69 bt debug_kernel_fw
70#endif /* CONFIG_SH_STANDARD_BIOS && CONFIG_SH_KGDB */
71
72debug_enter:
73#if defined(CONFIG_SH_KGDB)
74 /* Jump to kgdb, pass stacked regs as arg */
75debug_kernel_sw:
76 mov.l 3f, r0
77 jmp @r0
78 mov r15, r4
79 .align 2
803: .long kgdb_handle_exception
81#endif /* CONFIG_SH_KGDB */
82
83#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
84
85
86 .align 2
87debug_trap:
88#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
89 mov #OFF_SR, r0
90 mov.l @(r0,r15), r0 ! get status register
91 shll r0
92 shll r0 ! kernel space?
93 bt/s debug_kernel
94#endif
95 mov.l @r15, r0 ! Restore R0 value
96 mov.l 1f, r8
97 jmp @r8
98 nop
99
100 .align 2
101ENTRY(exception_error)
102 !
103#ifdef CONFIG_TRACE_IRQFLAGS
104 mov.l 3f, r0
105 jsr @r0
106 nop
107#endif
108 sti
109 mov.l 2f, r0
110 jmp @r0
111 nop
112
113!
114 .align 2
1151: .long break_point_trap_software
1162: .long do_exception_error
117#ifdef CONFIG_TRACE_IRQFLAGS
1183: .long trace_hardirqs_on
119#endif
120
121 .align 2
122ret_from_exception:
123 preempt_stop()
124#ifdef CONFIG_TRACE_IRQFLAGS
125 mov.l 4f, r0
126 jsr @r0
127 nop
128#endif
129ENTRY(ret_from_irq)
130 !
131 mov #OFF_SR, r0
132 mov.l @(r0,r15), r0 ! get status register
133 shll r0
134 shll r0 ! kernel space?
135 get_current_thread_info r8, r0
136 bt resume_kernel ! Yes, it's from kernel, go back soon
137
138#ifdef CONFIG_PREEMPT
139 bra resume_userspace
140 nop
141ENTRY(resume_kernel)
142 mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count
143 tst r0, r0
144 bf noresched
145need_resched:
146 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
147 tst #_TIF_NEED_RESCHED, r0 ! need_resched set?
148 bt noresched
149
150 mov #OFF_SR, r0
151 mov.l @(r0,r15), r0 ! get status register
152 and #0xf0, r0 ! interrupts off (exception path)?
153 cmp/eq #0xf0, r0
154 bt noresched
155
156 mov.l 1f, r0
157 mov.l r0, @(TI_PRE_COUNT,r8)
158
159#ifdef CONFIG_TRACE_IRQFLAGS
160 mov.l 3f, r0
161 jsr @r0
162 nop
163#endif
164 sti
165 mov.l 2f, r0
166 jsr @r0
167 nop
168 mov #0, r0
169 mov.l r0, @(TI_PRE_COUNT,r8)
170 cli
171#ifdef CONFIG_TRACE_IRQFLAGS
172 mov.l 4f, r0
173 jsr @r0
174 nop
175#endif
176
177 bra need_resched
178 nop
179
180noresched:
181 bra __restore_all
182 nop
183
184 .align 2
1851: .long PREEMPT_ACTIVE
1862: .long schedule
187#ifdef CONFIG_TRACE_IRQFLAGS
1883: .long trace_hardirqs_on
1894: .long trace_hardirqs_off
190#endif
191#endif
192
193ENTRY(resume_userspace)
194 ! r8: current_thread_info
195 cli
196#ifdef CONFIG_TRACE_IRQFLAGS
197 mov.l 5f, r0
198 jsr @r0
199 nop
200#endif
201 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
202 tst #_TIF_WORK_MASK, r0
203 bt/s __restore_all
204 tst #_TIF_NEED_RESCHED, r0
205
206 .align 2
207work_pending:
208 ! r0: current_thread_info->flags
209 ! r8: current_thread_info
210 ! t: result of "tst #_TIF_NEED_RESCHED, r0"
211 bf/s work_resched
212 tst #(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), r0
213work_notifysig:
214 bt/s __restore_all
215 mov r15, r4
216 mov r12, r5 ! set arg1(save_r0)
217 mov r0, r6
218 mov.l 2f, r1
219 mov.l 3f, r0
220 jmp @r1
221 lds r0, pr
222work_resched:
223#ifndef CONFIG_PREEMPT
224 ! gUSA handling
225 mov.l @(OFF_SP,r15), r0 ! get user space stack pointer
226 mov r0, r1
227 shll r0
228 bf/s 1f
229 shll r0
230 bf/s 1f
231 mov #OFF_PC, r0
232 ! SP >= 0xc0000000 : gUSA mark
233 mov.l @(r0,r15), r2 ! get user space PC (program counter)
234 mov.l @(OFF_R0,r15), r3 ! end point
235 cmp/hs r3, r2 ! r2 >= r3?
236 bt 1f
237 add r3, r1 ! rewind point #2
238 mov.l r1, @(r0,r15) ! reset PC to rewind point #2
239 !
2401:
241#endif
242 mov.l 1f, r1
243 jsr @r1 ! schedule
244 nop
245 cli
246#ifdef CONFIG_TRACE_IRQFLAGS
247 mov.l 5f, r0
248 jsr @r0
249 nop
250#endif
251 !
252 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
253 tst #_TIF_WORK_MASK, r0
254 bt __restore_all
255 bra work_pending
256 tst #_TIF_NEED_RESCHED, r0
257
258 .align 2
2591: .long schedule
2602: .long do_notify_resume
2613: .long restore_all
262#ifdef CONFIG_TRACE_IRQFLAGS
2634: .long trace_hardirqs_on
2645: .long trace_hardirqs_off
265#endif
266
267 .align 2
268syscall_exit_work:
269 ! r0: current_thread_info->flags
270 ! r8: current_thread_info
271 tst #_TIF_SYSCALL_TRACE, r0
272 bt/s work_pending
273 tst #_TIF_NEED_RESCHED, r0
274#ifdef CONFIG_TRACE_IRQFLAGS
275 mov.l 5f, r0
276 jsr @r0
277 nop
278#endif
279 sti
280 ! XXX setup arguments...
281 mov.l 4f, r0 ! do_syscall_trace
282 jsr @r0
283 nop
284 bra resume_userspace
285 nop
286
287 .align 2
288syscall_trace_entry:
289 ! Yes it is traced.
290 ! XXX setup arguments...
291 mov.l 4f, r11 ! Call do_syscall_trace which notifies
292 jsr @r11 ! superior (will chomp R[0-7])
293 nop
294 ! Reload R0-R4 from kernel stack, where the
295 ! parent may have modified them using
296 ! ptrace(POKEUSR). (Note that R0-R2 are
297 ! used by the system call handler directly
298 ! from the kernel stack anyway, so don't need
299 ! to be reloaded here.) This allows the parent
300 ! to rewrite system calls and args on the fly.
301 mov.l @(OFF_R4,r15), r4 ! arg0
302 mov.l @(OFF_R5,r15), r5
303 mov.l @(OFF_R6,r15), r6
304 mov.l @(OFF_R7,r15), r7 ! arg3
305 mov.l @(OFF_R3,r15), r3 ! syscall_nr
306 !
307 mov.l 2f, r10 ! Number of syscalls
308 cmp/hs r10, r3
309 bf syscall_call
310 mov #-ENOSYS, r0
311 bra syscall_exit
312 mov.l r0, @(OFF_R0,r15) ! Return value
313
314__restore_all:
315 mov.l 1f, r0
316 jmp @r0
317 nop
318
319 .align 2
3201: .long restore_all
321
322 .align 2
323not_syscall_tra:
324 bra debug_trap
325 nop
326
327 .align 2
328syscall_badsys: ! Bad syscall number
329 mov #-ENOSYS, r0
330 bra resume_userspace
331 mov.l r0, @(OFF_R0,r15) ! Return value
332
333
334/*
335 * Syscall interface:
336 *
337 * Syscall #: R3
338 * Arguments #0 to #3: R4--R7
339 * Arguments #4 to #6: R0, R1, R2
340 * TRA: (number of arguments + 0x10) x 4
341 *
342 * This code also handles delegating other traps to the BIOS/gdb stub
343 * according to:
344 *
345 * Trap number
346 * (TRA>>2) Purpose
347 * -------- -------
348 * 0x0-0xf old syscall ABI
349 * 0x10-0x1f new syscall ABI
350 * 0x20-0xff delegated through debug_trap to BIOS/gdb stub.
351 *
352 * Note: When we're first called, the TRA value must be shifted
353 * right 2 bits in order to get the value that was used as the "trapa"
354 * argument.
355 */
356
357 .align 2
358 .globl ret_from_fork
359ret_from_fork:
360 mov.l 1f, r8
361 jsr @r8
362 mov r0, r4
363 bra syscall_exit
364 nop
365 .align 2
3661: .long schedule_tail
367 !
368ENTRY(system_call)
369#if !defined(CONFIG_CPU_SH2)
370 mov.l 1f, r9
371 mov.l @r9, r8 ! Read from TRA (Trap Address) Register
372#endif
373 !
374 ! Is the trap argument >= 0x20? (TRA will be >= 0x80)
375 mov #0x7f, r9
376 cmp/hi r9, r8
377 bt/s not_syscall_tra
378 mov #OFF_TRA, r9
379 add r15, r9
380 mov.l r8, @r9 ! set TRA value to tra
381#ifdef CONFIG_TRACE_IRQFLAGS
382 mov.l 5f, r10
383 jsr @r10
384 nop
385#endif
386 sti
387
388 !
389 get_current_thread_info r8, r10
390 mov.l @(TI_FLAGS,r8), r8
391 mov #_TIF_SYSCALL_TRACE, r10
392 tst r10, r8
393 bf syscall_trace_entry
394 !
395 mov.l 2f, r8 ! Number of syscalls
396 cmp/hs r8, r3
397 bt syscall_badsys
398 !
399syscall_call:
400 shll2 r3 ! x4
401 mov.l 3f, r8 ! Load the address of sys_call_table
402 add r8, r3
403 mov.l @r3, r8
404 jsr @r8 ! jump to specific syscall handler
405 nop
406 mov.l @(OFF_R0,r15), r12 ! save r0
407 mov.l r0, @(OFF_R0,r15) ! save the return value
408 !
409syscall_exit:
410 cli
411#ifdef CONFIG_TRACE_IRQFLAGS
412 mov.l 6f, r0
413 jsr @r0
414 nop
415#endif
416 !
417 get_current_thread_info r8, r0
418 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
419 tst #_TIF_ALLWORK_MASK, r0
420 bf syscall_exit_work
421 bra __restore_all
422 nop
423 .align 2
424#if !defined(CONFIG_CPU_SH2)
4251: .long TRA
426#endif
4272: .long NR_syscalls
4283: .long sys_call_table
4294: .long do_syscall_trace
430#ifdef CONFIG_TRACE_IRQFLAGS
4315: .long trace_hardirqs_on
4326: .long trace_hardirqs_off
433#endif
diff --git a/arch/sh/kernel/head.S b/arch/sh/kernel/head.S
index f5f53d14f245..6aca4bc6ec5d 100644
--- a/arch/sh/kernel/head.S
+++ b/arch/sh/kernel/head.S
@@ -33,7 +33,7 @@ ENTRY(empty_zero_page)
33 .long 0x00360000 /* INITRD_START */ 33 .long 0x00360000 /* INITRD_START */
34 .long 0x000a0000 /* INITRD_SIZE */ 34 .long 0x000a0000 /* INITRD_SIZE */
35 .long 0 35 .long 0
36 .balign 4096,0,4096 36 .balign PAGE_SIZE,0,PAGE_SIZE
37 37
38 .text 38 .text
39/* 39/*
@@ -53,8 +53,10 @@ ENTRY(_stext)
53 ldc r0, sr 53 ldc r0, sr
54 ! Initialize global interrupt mask 54 ! Initialize global interrupt mask
55 mov #0, r0 55 mov #0, r0
56#ifdef CONFIG_CPU_HAS_SR_RB
56 ldc r0, r6_bank 57 ldc r0, r6_bank
57 58#endif
59
58 /* 60 /*
59 * Prefetch if possible to reduce cache miss penalty. 61 * Prefetch if possible to reduce cache miss penalty.
60 * 62 *
@@ -68,11 +70,14 @@ ENTRY(_stext)
68 ! 70 !
69 mov.l 2f, r0 71 mov.l 2f, r0
70 mov r0, r15 ! Set initial r15 (stack pointer) 72 mov r0, r15 ! Set initial r15 (stack pointer)
71 mov #(THREAD_SIZE >> 8), r1 73 mov #(THREAD_SIZE >> 10), r1
72 shll8 r1 ! r1 = THREAD_SIZE 74 shll8 r1 ! r1 = THREAD_SIZE
75 shll2 r1
73 sub r1, r0 ! 76 sub r1, r0 !
77#ifdef CONFIG_CPU_HAS_SR_RB
74 ldc r0, r7_bank ! ... and initial thread_info 78 ldc r0, r7_bank ! ... and initial thread_info
75 79#endif
80
76 ! Clear BSS area 81 ! Clear BSS area
77 mov.l 3f, r1 82 mov.l 3f, r1
78 add #4, r1 83 add #4, r1
@@ -95,7 +100,11 @@ ENTRY(_stext)
95 nop 100 nop
96 101
97 .balign 4 102 .balign 4
103#if defined(CONFIG_CPU_SH2)
1041: .long 0x000000F0 ! IMASK=0xF
105#else
981: .long 0x400080F0 ! MD=1, RB=0, BL=0, FD=1, IMASK=0xF 1061: .long 0x400080F0 ! MD=1, RB=0, BL=0, FD=1, IMASK=0xF
107#endif
992: .long init_thread_union+THREAD_SIZE 1082: .long init_thread_union+THREAD_SIZE
1003: .long __bss_start 1093: .long __bss_start
1014: .long _end 1104: .long _end
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 944128ce9706..67be2b6e8cd1 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -12,7 +12,7 @@
12#include <linux/kernel_stat.h> 12#include <linux/kernel_stat.h>
13#include <linux/seq_file.h> 13#include <linux/seq_file.h>
14#include <linux/io.h> 14#include <linux/io.h>
15#include <asm/irq.h> 15#include <linux/irq.h>
16#include <asm/processor.h> 16#include <asm/processor.h>
17#include <asm/uaccess.h> 17#include <asm/uaccess.h>
18#include <asm/thread_info.h> 18#include <asm/thread_info.h>
@@ -78,15 +78,16 @@ union irq_ctx {
78 u32 stack[THREAD_SIZE/sizeof(u32)]; 78 u32 stack[THREAD_SIZE/sizeof(u32)];
79}; 79};
80 80
81static union irq_ctx *hardirq_ctx[NR_CPUS]; 81static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
82static union irq_ctx *softirq_ctx[NR_CPUS]; 82static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
83#endif 83#endif
84 84
85asmlinkage int do_IRQ(unsigned long r4, unsigned long r5, 85asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
86 unsigned long r6, unsigned long r7, 86 unsigned long r6, unsigned long r7,
87 struct pt_regs regs) 87 struct pt_regs __regs)
88{ 88{
89 struct pt_regs *old_regs = set_irq_regs(&regs); 89 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
90 struct pt_regs *old_regs = set_irq_regs(regs);
90 int irq; 91 int irq;
91#ifdef CONFIG_4KSTACKS 92#ifdef CONFIG_4KSTACKS
92 union irq_ctx *curctx, *irqctx; 93 union irq_ctx *curctx, *irqctx;
@@ -111,7 +112,7 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
111#endif 112#endif
112 113
113#ifdef CONFIG_CPU_HAS_INTEVT 114#ifdef CONFIG_CPU_HAS_INTEVT
114 irq = (ctrl_inl(INTEVT) >> 5) - 16; 115 irq = evt2irq(ctrl_inl(INTEVT));
115#else 116#else
116 irq = r4; 117 irq = r4;
117#endif 118#endif
@@ -135,17 +136,24 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
135 irqctx->tinfo.task = curctx->tinfo.task; 136 irqctx->tinfo.task = curctx->tinfo.task;
136 irqctx->tinfo.previous_sp = current_stack_pointer; 137 irqctx->tinfo.previous_sp = current_stack_pointer;
137 138
139 /*
140 * Copy the softirq bits in preempt_count so that the
141 * softirq checks work in the hardirq context.
142 */
143 irqctx->tinfo.preempt_count =
144 (irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
145 (curctx->tinfo.preempt_count & SOFTIRQ_MASK);
146
138 __asm__ __volatile__ ( 147 __asm__ __volatile__ (
139 "mov %0, r4 \n" 148 "mov %0, r4 \n"
140 "mov r15, r9 \n" 149 "mov r15, r8 \n"
141 "jsr @%1 \n" 150 "jsr @%1 \n"
142 /* swith to the irq stack */ 151 /* swith to the irq stack */
143 " mov %2, r15 \n" 152 " mov %2, r15 \n"
144 /* restore the stack (ring zero) */ 153 /* restore the stack (ring zero) */
145 "mov r9, r15 \n" 154 "mov r8, r15 \n"
146 : /* no outputs */ 155 : /* no outputs */
147 : "r" (irq), "r" (generic_handle_irq), "r" (isp) 156 : "r" (irq), "r" (generic_handle_irq), "r" (isp)
148 /* XXX: A somewhat excessive clobber list? -PFM */
149 : "memory", "r0", "r1", "r2", "r3", "r4", 157 : "memory", "r0", "r1", "r2", "r3", "r4",
150 "r5", "r6", "r7", "r8", "t", "pr" 158 "r5", "r6", "r7", "r8", "t", "pr"
151 ); 159 );
@@ -193,7 +201,7 @@ void irq_ctx_init(int cpu)
193 irqctx->tinfo.task = NULL; 201 irqctx->tinfo.task = NULL;
194 irqctx->tinfo.exec_domain = NULL; 202 irqctx->tinfo.exec_domain = NULL;
195 irqctx->tinfo.cpu = cpu; 203 irqctx->tinfo.cpu = cpu;
196 irqctx->tinfo.preempt_count = SOFTIRQ_OFFSET; 204 irqctx->tinfo.preempt_count = 0;
197 irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); 205 irqctx->tinfo.addr_limit = MAKE_MM_SEG(0);
198 206
199 softirq_ctx[cpu] = irqctx; 207 softirq_ctx[cpu] = irqctx;
@@ -239,13 +247,38 @@ asmlinkage void do_softirq(void)
239 "mov r9, r15 \n" 247 "mov r9, r15 \n"
240 : /* no outputs */ 248 : /* no outputs */
241 : "r" (__do_softirq), "r" (isp) 249 : "r" (__do_softirq), "r" (isp)
242 /* XXX: A somewhat excessive clobber list? -PFM */
243 : "memory", "r0", "r1", "r2", "r3", "r4", 250 : "memory", "r0", "r1", "r2", "r3", "r4",
244 "r5", "r6", "r7", "r8", "r9", "r15", "t", "pr" 251 "r5", "r6", "r7", "r8", "r9", "r15", "t", "pr"
245 ); 252 );
253
254 /*
255 * Shouldnt happen, we returned above if in_interrupt():
256 */
257 WARN_ON_ONCE(softirq_count());
246 } 258 }
247 259
248 local_irq_restore(flags); 260 local_irq_restore(flags);
249} 261}
250EXPORT_SYMBOL(do_softirq); 262EXPORT_SYMBOL(do_softirq);
251#endif 263#endif
264
265void __init init_IRQ(void)
266{
267#ifdef CONFIG_CPU_HAS_PINT_IRQ
268 init_IRQ_pint();
269#endif
270
271#ifdef CONFIG_CPU_HAS_INTC2_IRQ
272 init_IRQ_intc2();
273#endif
274
275#ifdef CONFIG_CPU_HAS_IPR_IRQ
276 init_IRQ_ipr();
277#endif
278
279 /* Perform the machine specific initialisation */
280 if (sh_mv.mv_init_irq)
281 sh_mv.mv_init_irq();
282
283 irq_ctx_init(smp_processor_id());
284}
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index a52b13ac6b7f..f3e2631be144 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -385,10 +385,11 @@ struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *ne
385 385
386asmlinkage int sys_fork(unsigned long r4, unsigned long r5, 386asmlinkage int sys_fork(unsigned long r4, unsigned long r5,
387 unsigned long r6, unsigned long r7, 387 unsigned long r6, unsigned long r7,
388 struct pt_regs regs) 388 struct pt_regs __regs)
389{ 389{
390 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
390#ifdef CONFIG_MMU 391#ifdef CONFIG_MMU
391 return do_fork(SIGCHLD, regs.regs[15], &regs, 0, NULL, NULL); 392 return do_fork(SIGCHLD, regs->regs[15], regs, 0, NULL, NULL);
392#else 393#else
393 /* fork almost works, enough to trick you into looking elsewhere :-( */ 394 /* fork almost works, enough to trick you into looking elsewhere :-( */
394 return -EINVAL; 395 return -EINVAL;
@@ -398,11 +399,12 @@ asmlinkage int sys_fork(unsigned long r4, unsigned long r5,
398asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp, 399asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
399 unsigned long parent_tidptr, 400 unsigned long parent_tidptr,
400 unsigned long child_tidptr, 401 unsigned long child_tidptr,
401 struct pt_regs regs) 402 struct pt_regs __regs)
402{ 403{
404 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
403 if (!newsp) 405 if (!newsp)
404 newsp = regs.regs[15]; 406 newsp = regs->regs[15];
405 return do_fork(clone_flags, newsp, &regs, 0, 407 return do_fork(clone_flags, newsp, regs, 0,
406 (int __user *)parent_tidptr, (int __user *)child_tidptr); 408 (int __user *)parent_tidptr, (int __user *)child_tidptr);
407} 409}
408 410
@@ -418,9 +420,10 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
418 */ 420 */
419asmlinkage int sys_vfork(unsigned long r4, unsigned long r5, 421asmlinkage int sys_vfork(unsigned long r4, unsigned long r5,
420 unsigned long r6, unsigned long r7, 422 unsigned long r6, unsigned long r7,
421 struct pt_regs regs) 423 struct pt_regs __regs)
422{ 424{
423 return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.regs[15], &regs, 425 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
426 return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->regs[15], regs,
424 0, NULL, NULL); 427 0, NULL, NULL);
425} 428}
426 429
@@ -429,8 +432,9 @@ asmlinkage int sys_vfork(unsigned long r4, unsigned long r5,
429 */ 432 */
430asmlinkage int sys_execve(char *ufilename, char **uargv, 433asmlinkage int sys_execve(char *ufilename, char **uargv,
431 char **uenvp, unsigned long r7, 434 char **uenvp, unsigned long r7,
432 struct pt_regs regs) 435 struct pt_regs __regs)
433{ 436{
437 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
434 int error; 438 int error;
435 char *filename; 439 char *filename;
436 440
@@ -442,7 +446,7 @@ asmlinkage int sys_execve(char *ufilename, char **uargv,
442 error = do_execve(filename, 446 error = do_execve(filename,
443 (char __user * __user *)uargv, 447 (char __user * __user *)uargv,
444 (char __user * __user *)uenvp, 448 (char __user * __user *)uenvp,
445 &regs); 449 regs);
446 if (error == 0) { 450 if (error == 0) {
447 task_lock(current); 451 task_lock(current);
448 current->ptrace &= ~PT_DTRACE; 452 current->ptrace &= ~PT_DTRACE;
@@ -472,9 +476,7 @@ unsigned long get_wchan(struct task_struct *p)
472 return pc; 476 return pc;
473} 477}
474 478
475asmlinkage void break_point_trap(unsigned long r4, unsigned long r5, 479asmlinkage void break_point_trap(void)
476 unsigned long r6, unsigned long r7,
477 struct pt_regs regs)
478{ 480{
479 /* Clear tracing. */ 481 /* Clear tracing. */
480#if defined(CONFIG_CPU_SH4A) 482#if defined(CONFIG_CPU_SH4A)
@@ -492,8 +494,10 @@ asmlinkage void break_point_trap(unsigned long r4, unsigned long r5,
492 494
493asmlinkage void break_point_trap_software(unsigned long r4, unsigned long r5, 495asmlinkage void break_point_trap_software(unsigned long r4, unsigned long r5,
494 unsigned long r6, unsigned long r7, 496 unsigned long r6, unsigned long r7,
495 struct pt_regs regs) 497 struct pt_regs __regs)
496{ 498{
497 regs.pc -= 2; 499 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
500
501 regs->pc -= 2;
498 force_sig(SIGTRAP, current); 502 force_sig(SIGTRAP, current);
499} 503}
diff --git a/arch/sh/kernel/relocate_kernel.S b/arch/sh/kernel/relocate_kernel.S
index 8221b37c9773..c66cb3209db5 100644
--- a/arch/sh/kernel/relocate_kernel.S
+++ b/arch/sh/kernel/relocate_kernel.S
@@ -7,11 +7,9 @@
7 * This source code is licensed under the GNU General Public License, 7 * This source code is licensed under the GNU General Public License,
8 * Version 2. See the file COPYING for more details. 8 * Version 2. See the file COPYING for more details.
9 */ 9 */
10
11#include <linux/linkage.h> 10#include <linux/linkage.h>
12 11#include <asm/addrspace.h>
13#define PAGE_SIZE 4096 /* must be same value as in <asm/page.h> */ 12#include <asm/page.h>
14
15 13
16 .globl relocate_new_kernel 14 .globl relocate_new_kernel
17relocate_new_kernel: 15relocate_new_kernel:
@@ -20,8 +18,8 @@ relocate_new_kernel:
20 /* r6 = start_address */ 18 /* r6 = start_address */
21 /* r7 = vbr_reg */ 19 /* r7 = vbr_reg */
22 20
23 mov.l 10f,r8 /* 4096 */ 21 mov.l 10f,r8 /* PAGE_SIZE */
24 mov.l 11f,r9 /* 0xa0000000 */ 22 mov.l 11f,r9 /* P2SEG */
25 23
26 /* stack setting */ 24 /* stack setting */
27 add r8,r5 25 add r8,r5
@@ -32,7 +30,7 @@ relocate_new_kernel:
320: 300:
33 mov.l @r4+,r0 /* cmd = *ind++ */ 31 mov.l @r4+,r0 /* cmd = *ind++ */
34 32
351: /* addr = (cmd | 0xa0000000) & 0xfffffff0 */ 331: /* addr = (cmd | P2SEG) & 0xfffffff0 */
36 mov r0,r2 34 mov r0,r2
37 or r9,r2 35 or r9,r2
38 mov #-16,r1 36 mov #-16,r1
@@ -92,7 +90,7 @@ relocate_new_kernel:
9210: 9010:
93 .long PAGE_SIZE 91 .long PAGE_SIZE
9411: 9211:
95 .long 0xa0000000 93 .long P2SEG
96 94
97relocate_new_kernel_end: 95relocate_new_kernel_end:
98 96
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 36d86f9ac38a..696ca75752d9 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -392,6 +392,7 @@ static int __init topology_init(void)
392subsys_initcall(topology_init); 392subsys_initcall(topology_init);
393 393
394static const char *cpu_name[] = { 394static const char *cpu_name[] = {
395 [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
395 [CPU_SH7604] = "SH7604", [CPU_SH7300] = "SH7300", 396 [CPU_SH7604] = "SH7604", [CPU_SH7300] = "SH7300",
396 [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706", 397 [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
397 [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708", 398 [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
@@ -404,6 +405,7 @@ static const char *cpu_name[] = {
404 [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501", 405 [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
405 [CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780", 406 [CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780",
406 [CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343", 407 [CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343",
408 [CPU_SH7785] = "SH7785",
407 [CPU_SH_NONE] = "Unknown" 409 [CPU_SH_NONE] = "Unknown"
408}; 410};
409 411
diff --git a/arch/sh/kernel/sh_ksyms.c b/arch/sh/kernel/sh_ksyms.c
index 8a2fd19dc9eb..c706f3bfd897 100644
--- a/arch/sh/kernel/sh_ksyms.c
+++ b/arch/sh/kernel/sh_ksyms.c
@@ -73,8 +73,6 @@ DECLARE_EXPORT(__lshrdi3);
73DECLARE_EXPORT(__movstr); 73DECLARE_EXPORT(__movstr);
74DECLARE_EXPORT(__movstrSI16); 74DECLARE_EXPORT(__movstrSI16);
75 75
76EXPORT_SYMBOL(strcpy);
77
78#ifdef CONFIG_CPU_SH4 76#ifdef CONFIG_CPU_SH4
79DECLARE_EXPORT(__movstr_i4_even); 77DECLARE_EXPORT(__movstr_i4_even);
80DECLARE_EXPORT(__movstr_i4_odd); 78DECLARE_EXPORT(__movstr_i4_odd);
diff --git a/arch/sh/kernel/signal.c b/arch/sh/kernel/signal.c
index 5213f5bc6ce0..50d7c4993bef 100644
--- a/arch/sh/kernel/signal.c
+++ b/arch/sh/kernel/signal.c
@@ -37,7 +37,7 @@
37asmlinkage int 37asmlinkage int
38sys_sigsuspend(old_sigset_t mask, 38sys_sigsuspend(old_sigset_t mask,
39 unsigned long r5, unsigned long r6, unsigned long r7, 39 unsigned long r5, unsigned long r6, unsigned long r7,
40 struct pt_regs regs) 40 struct pt_regs __regs)
41{ 41{
42 mask &= _BLOCKABLE; 42 mask &= _BLOCKABLE;
43 spin_lock_irq(&current->sighand->siglock); 43 spin_lock_irq(&current->sighand->siglock);
@@ -52,7 +52,7 @@ sys_sigsuspend(old_sigset_t mask,
52 return -ERESTARTNOHAND; 52 return -ERESTARTNOHAND;
53} 53}
54 54
55asmlinkage int 55asmlinkage int
56sys_sigaction(int sig, const struct old_sigaction __user *act, 56sys_sigaction(int sig, const struct old_sigaction __user *act,
57 struct old_sigaction __user *oact) 57 struct old_sigaction __user *oact)
58{ 58{
@@ -87,9 +87,11 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
87asmlinkage int 87asmlinkage int
88sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, 88sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
89 unsigned long r6, unsigned long r7, 89 unsigned long r6, unsigned long r7,
90 struct pt_regs regs) 90 struct pt_regs __regs)
91{ 91{
92 return do_sigaltstack(uss, uoss, regs.regs[15]); 92 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
93
94 return do_sigaltstack(uss, uoss, regs->regs[15]);
93} 95}
94 96
95 97
@@ -98,7 +100,11 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
98 */ 100 */
99 101
100#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ 102#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
101#define TRAP16 0xc310 /* Syscall w/no args (NR in R3) */ 103#if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A)
104#define TRAP_NOARG 0xc320 /* Syscall w/no args (NR in R3) */
105#else
106#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) */
107#endif
102#define OR_R0_R0 0x200b /* or r0,r0 (insert to avoid hardware bug) */ 108#define OR_R0_R0 0x200b /* or r0,r0 (insert to avoid hardware bug) */
103 109
104struct sigframe 110struct sigframe
@@ -194,9 +200,10 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p
194 200
195asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, 201asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
196 unsigned long r6, unsigned long r7, 202 unsigned long r6, unsigned long r7,
197 struct pt_regs regs) 203 struct pt_regs __regs)
198{ 204{
199 struct sigframe __user *frame = (struct sigframe __user *)regs.regs[15]; 205 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
206 struct sigframe __user *frame = (struct sigframe __user *)regs->regs[15];
200 sigset_t set; 207 sigset_t set;
201 int r0; 208 int r0;
202 209
@@ -216,7 +223,7 @@ asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
216 recalc_sigpending(); 223 recalc_sigpending();
217 spin_unlock_irq(&current->sighand->siglock); 224 spin_unlock_irq(&current->sighand->siglock);
218 225
219 if (restore_sigcontext(&regs, &frame->sc, &r0)) 226 if (restore_sigcontext(regs, &frame->sc, &r0))
220 goto badframe; 227 goto badframe;
221 return r0; 228 return r0;
222 229
@@ -227,9 +234,10 @@ badframe:
227 234
228asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5, 235asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
229 unsigned long r6, unsigned long r7, 236 unsigned long r6, unsigned long r7,
230 struct pt_regs regs) 237 struct pt_regs __regs)
231{ 238{
232 struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs.regs[15]; 239 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
240 struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->regs[15];
233 sigset_t set; 241 sigset_t set;
234 stack_t st; 242 stack_t st;
235 int r0; 243 int r0;
@@ -246,14 +254,14 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
246 recalc_sigpending(); 254 recalc_sigpending();
247 spin_unlock_irq(&current->sighand->siglock); 255 spin_unlock_irq(&current->sighand->siglock);
248 256
249 if (restore_sigcontext(&regs, &frame->uc.uc_mcontext, &r0)) 257 if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
250 goto badframe; 258 goto badframe;
251 259
252 if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st))) 260 if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
253 goto badframe; 261 goto badframe;
254 /* It is more difficult to avoid calling this function than to 262 /* It is more difficult to avoid calling this function than to
255 call it and ignore errors. */ 263 call it and ignore errors. */
256 do_sigaltstack(&st, NULL, regs.regs[15]); 264 do_sigaltstack(&st, NULL, regs->regs[15]);
257 265
258 return r0; 266 return r0;
259 267
@@ -350,7 +358,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
350 } else { 358 } else {
351 /* Generate return code (system call to sigreturn) */ 359 /* Generate return code (system call to sigreturn) */
352 err |= __put_user(MOVW(7), &frame->retcode[0]); 360 err |= __put_user(MOVW(7), &frame->retcode[0]);
353 err |= __put_user(TRAP16, &frame->retcode[1]); 361 err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
354 err |= __put_user(OR_R0_R0, &frame->retcode[2]); 362 err |= __put_user(OR_R0_R0, &frame->retcode[2]);
355 err |= __put_user(OR_R0_R0, &frame->retcode[3]); 363 err |= __put_user(OR_R0_R0, &frame->retcode[3]);
356 err |= __put_user(OR_R0_R0, &frame->retcode[4]); 364 err |= __put_user(OR_R0_R0, &frame->retcode[4]);
@@ -430,7 +438,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
430 } else { 438 } else {
431 /* Generate return code (system call to rt_sigreturn) */ 439 /* Generate return code (system call to rt_sigreturn) */
432 err |= __put_user(MOVW(7), &frame->retcode[0]); 440 err |= __put_user(MOVW(7), &frame->retcode[0]);
433 err |= __put_user(TRAP16, &frame->retcode[1]); 441 err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
434 err |= __put_user(OR_R0_R0, &frame->retcode[2]); 442 err |= __put_user(OR_R0_R0, &frame->retcode[2]);
435 err |= __put_user(OR_R0_R0, &frame->retcode[3]); 443 err |= __put_user(OR_R0_R0, &frame->retcode[3]);
436 err |= __put_user(OR_R0_R0, &frame->retcode[4]); 444 err |= __put_user(OR_R0_R0, &frame->retcode[4]);
diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c
new file mode 100644
index 000000000000..0d5268afe80f
--- /dev/null
+++ b/arch/sh/kernel/stacktrace.c
@@ -0,0 +1,43 @@
1/*
2 * arch/sh/kernel/stacktrace.c
3 *
4 * Stack trace management functions
5 *
6 * Copyright (C) 2006 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12#include <linux/sched.h>
13#include <linux/stacktrace.h>
14#include <linux/thread_info.h>
15#include <asm/ptrace.h>
16
17/*
18 * Save stack-backtrace addresses into a stack_trace buffer.
19 */
20void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
21{
22 unsigned long *sp;
23
24 if (!task)
25 task = current;
26 if (task == current)
27 sp = (unsigned long *)current_stack_pointer;
28 else
29 sp = (unsigned long *)task->thread.sp;
30
31 while (!kstack_end(sp)) {
32 unsigned long addr = *sp++;
33
34 if (__kernel_text_address(addr)) {
35 if (trace->skip > 0)
36 trace->skip--;
37 else
38 trace->entries[trace->nr_entries++] = addr;
39 if (trace->nr_entries >= trace->max_entries)
40 break;
41 }
42 }
43}
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index 8fde95001c34..5083b6ed4b39 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -33,14 +33,15 @@
33 */ 33 */
34asmlinkage int sys_pipe(unsigned long r4, unsigned long r5, 34asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
35 unsigned long r6, unsigned long r7, 35 unsigned long r6, unsigned long r7,
36 struct pt_regs regs) 36 struct pt_regs __regs)
37{ 37{
38 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
38 int fd[2]; 39 int fd[2];
39 int error; 40 int error;
40 41
41 error = do_pipe(fd); 42 error = do_pipe(fd);
42 if (!error) { 43 if (!error) {
43 regs.regs[1] = fd[1]; 44 regs->regs[1] = fd[1];
44 return fd[0]; 45 return fd[0];
45 } 46 }
46 return error; 47 return error;
@@ -50,6 +51,7 @@ unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
50 51
51EXPORT_SYMBOL(shm_align_mask); 52EXPORT_SYMBOL(shm_align_mask);
52 53
54#ifdef CONFIG_MMU
53/* 55/*
54 * To avoid cache aliases, we map the shared page with same color. 56 * To avoid cache aliases, we map the shared page with same color.
55 */ 57 */
@@ -135,6 +137,7 @@ full_search:
135 addr = COLOUR_ALIGN(addr, pgoff); 137 addr = COLOUR_ALIGN(addr, pgoff);
136 } 138 }
137} 139}
140#endif /* CONFIG_MMU */
138 141
139static inline long 142static inline long
140do_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 143do_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
index 57e708d7b52d..c206c9504c4b 100644
--- a/arch/sh/kernel/time.c
+++ b/arch/sh/kernel/time.c
@@ -13,6 +13,8 @@
13#include <linux/module.h> 13#include <linux/module.h>
14#include <linux/init.h> 14#include <linux/init.h>
15#include <linux/profile.h> 15#include <linux/profile.h>
16#include <linux/timex.h>
17#include <linux/sched.h>
16#include <asm/clock.h> 18#include <asm/clock.h>
17#include <asm/rtc.h> 19#include <asm/rtc.h>
18#include <asm/timer.h> 20#include <asm/timer.h>
@@ -50,15 +52,20 @@ unsigned long long __attribute__ ((weak)) sched_clock(void)
50#ifndef CONFIG_GENERIC_TIME 52#ifndef CONFIG_GENERIC_TIME
51void do_gettimeofday(struct timeval *tv) 53void do_gettimeofday(struct timeval *tv)
52{ 54{
55 unsigned long flags;
53 unsigned long seq; 56 unsigned long seq;
54 unsigned long usec, sec; 57 unsigned long usec, sec;
55 58
56 do { 59 do {
57 seq = read_seqbegin(&xtime_lock); 60 /*
61 * Turn off IRQs when grabbing xtime_lock, so that
62 * the sys_timer get_offset code doesn't have to handle it.
63 */
64 seq = read_seqbegin_irqsave(&xtime_lock, flags);
58 usec = get_timer_offset(); 65 usec = get_timer_offset();
59 sec = xtime.tv_sec; 66 sec = xtime.tv_sec;
60 usec += xtime.tv_nsec / 1000; 67 usec += xtime.tv_nsec / NSEC_PER_USEC;
61 } while (read_seqretry(&xtime_lock, seq)); 68 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
62 69
63 while (usec >= 1000000) { 70 while (usec >= 1000000) {
64 usec -= 1000000; 71 usec -= 1000000;
@@ -85,7 +92,7 @@ int do_settimeofday(struct timespec *tv)
85 * wall time. Discover what correction gettimeofday() would have 92 * wall time. Discover what correction gettimeofday() would have
86 * made, and then undo it! 93 * made, and then undo it!
87 */ 94 */
88 nsec -= 1000 * get_timer_offset(); 95 nsec -= get_timer_offset() * NSEC_PER_USEC;
89 96
90 wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec); 97 wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
91 wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec); 98 wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
@@ -169,6 +176,108 @@ static struct sysdev_class timer_sysclass = {
169 .resume = timer_resume, 176 .resume = timer_resume,
170}; 177};
171 178
179#ifdef CONFIG_NO_IDLE_HZ
180static int timer_dyn_tick_enable(void)
181{
182 struct dyn_tick_timer *dyn_tick = sys_timer->dyn_tick;
183 unsigned long flags;
184 int ret = -ENODEV;
185
186 if (dyn_tick) {
187 spin_lock_irqsave(&dyn_tick->lock, flags);
188 ret = 0;
189 if (!(dyn_tick->state & DYN_TICK_ENABLED)) {
190 ret = dyn_tick->enable();
191
192 if (ret == 0)
193 dyn_tick->state |= DYN_TICK_ENABLED;
194 }
195 spin_unlock_irqrestore(&dyn_tick->lock, flags);
196 }
197
198 return ret;
199}
200
201static int timer_dyn_tick_disable(void)
202{
203 struct dyn_tick_timer *dyn_tick = sys_timer->dyn_tick;
204 unsigned long flags;
205 int ret = -ENODEV;
206
207 if (dyn_tick) {
208 spin_lock_irqsave(&dyn_tick->lock, flags);
209 ret = 0;
210 if (dyn_tick->state & DYN_TICK_ENABLED) {
211 ret = dyn_tick->disable();
212
213 if (ret == 0)
214 dyn_tick->state &= ~DYN_TICK_ENABLED;
215 }
216 spin_unlock_irqrestore(&dyn_tick->lock, flags);
217 }
218
219 return ret;
220}
221
222/*
223 * Reprogram the system timer for at least the calculated time interval.
224 * This function should be called from the idle thread with IRQs disabled,
225 * immediately before sleeping.
226 */
227void timer_dyn_reprogram(void)
228{
229 struct dyn_tick_timer *dyn_tick = sys_timer->dyn_tick;
230 unsigned long next, seq, flags;
231
232 if (!dyn_tick)
233 return;
234
235 spin_lock_irqsave(&dyn_tick->lock, flags);
236 if (dyn_tick->state & DYN_TICK_ENABLED) {
237 next = next_timer_interrupt();
238 do {
239 seq = read_seqbegin(&xtime_lock);
240 dyn_tick->reprogram(next - jiffies);
241 } while (read_seqretry(&xtime_lock, seq));
242 }
243 spin_unlock_irqrestore(&dyn_tick->lock, flags);
244}
245
246static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf)
247{
248 return sprintf(buf, "%i\n",
249 (sys_timer->dyn_tick->state & DYN_TICK_ENABLED) >> 1);
250}
251
252static ssize_t timer_set_dyn_tick(struct sys_device *dev, const char *buf,
253 size_t count)
254{
255 unsigned int enable = simple_strtoul(buf, NULL, 2);
256
257 if (enable)
258 timer_dyn_tick_enable();
259 else
260 timer_dyn_tick_disable();
261
262 return count;
263}
264static SYSDEV_ATTR(dyn_tick, 0644, timer_show_dyn_tick, timer_set_dyn_tick);
265
266/*
267 * dyntick=enable|disable
268 */
269static char dyntick_str[4] __initdata = "";
270
271static int __init dyntick_setup(char *str)
272{
273 if (str)
274 strlcpy(dyntick_str, str, sizeof(dyntick_str));
275 return 1;
276}
277
278__setup("dyntick=", dyntick_setup);
279#endif
280
172static int __init timer_init_sysfs(void) 281static int __init timer_init_sysfs(void)
173{ 282{
174 int ret = sysdev_class_register(&timer_sysclass); 283 int ret = sysdev_class_register(&timer_sysclass);
@@ -176,7 +285,22 @@ static int __init timer_init_sysfs(void)
176 return ret; 285 return ret;
177 286
178 sys_timer->dev.cls = &timer_sysclass; 287 sys_timer->dev.cls = &timer_sysclass;
179 return sysdev_register(&sys_timer->dev); 288 ret = sysdev_register(&sys_timer->dev);
289
290#ifdef CONFIG_NO_IDLE_HZ
291 if (ret == 0 && sys_timer->dyn_tick) {
292 ret = sysdev_create_file(&sys_timer->dev, &attr_dyn_tick);
293
294 /*
295 * Turn on dynamic tick after calibrate delay
296 * for correct bogomips
297 */
298 if (ret == 0 && dyntick_str[0] == 'e')
299 ret = timer_dyn_tick_enable();
300 }
301#endif
302
303 return ret;
180} 304}
181device_initcall(timer_init_sysfs); 305device_initcall(timer_init_sysfs);
182 306
@@ -200,6 +324,11 @@ void __init time_init(void)
200 sys_timer = get_sys_timer(); 324 sys_timer = get_sys_timer();
201 printk(KERN_INFO "Using %s for system timer\n", sys_timer->name); 325 printk(KERN_INFO "Using %s for system timer\n", sys_timer->name);
202 326
327#ifdef CONFIG_NO_IDLE_HZ
328 if (sys_timer->dyn_tick)
329 spin_lock_init(&sys_timer->dyn_tick->lock);
330#endif
331
203#if defined(CONFIG_SH_KGDB) 332#if defined(CONFIG_SH_KGDB)
204 /* 333 /*
205 * Set up kgdb as requested. We do it here because the serial 334 * Set up kgdb as requested. We do it here because the serial
diff --git a/arch/sh/kernel/timers/Makefile b/arch/sh/kernel/timers/Makefile
index 151a6a304cec..bcf244ff6a12 100644
--- a/arch/sh/kernel/timers/Makefile
+++ b/arch/sh/kernel/timers/Makefile
@@ -5,4 +5,6 @@
5obj-y := timer.o 5obj-y := timer.o
6 6
7obj-$(CONFIG_SH_TMU) += timer-tmu.o 7obj-$(CONFIG_SH_TMU) += timer-tmu.o
8obj-$(CONFIG_SH_MTU2) += timer-mtu2.o
9obj-$(CONFIG_SH_CMT) += timer-cmt.o
8 10
diff --git a/arch/sh/kernel/timers/timer-cmt.c b/arch/sh/kernel/timers/timer-cmt.c
new file mode 100644
index 000000000000..a574b93a4e7b
--- /dev/null
+++ b/arch/sh/kernel/timers/timer-cmt.c
@@ -0,0 +1,196 @@
1/*
2 * arch/sh/kernel/timers/timer-cmt.c - CMT Timer Support
3 *
4 * Copyright (C) 2005 Yoshinori Sato
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/init.h>
12#include <linux/kernel.h>
13#include <linux/interrupt.h>
14#include <linux/seqlock.h>
15#include <asm/timer.h>
16#include <asm/rtc.h>
17#include <asm/io.h>
18#include <asm/irq.h>
19#include <asm/clock.h>
20
21#if defined(CONFIG_CPU_SUBTYPE_SH7619)
22#define CMT_CMSTR 0xf84a0070
23#define CMT_CMCSR_0 0xf84a0072
24#define CMT_CMCNT_0 0xf84a0074
25#define CMT_CMCOR_0 0xf84a0076
26#define CMT_CMCSR_1 0xf84a0078
27#define CMT_CMCNT_1 0xf84a007a
28#define CMT_CMCOR_1 0xf84a007c
29
30#define STBCR3 0xf80a0000
31#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR3) & ~0x10, STBCR3); } while(0)
32#define CMT_CMCSR_INIT 0x0040
33#define CMT_CMCSR_CALIB 0x0000
34#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
35#define CMT_CMSTR 0xfffec000
36#define CMT_CMCSR_0 0xfffec002
37#define CMT_CMCNT_0 0xfffec004
38#define CMT_CMCOR_0 0xfffec006
39
40#define STBCR4 0xfffe040c
41#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR4) & ~0x04, STBCR4); } while(0)
42#define CMT_CMCSR_INIT 0x0040
43#define CMT_CMCSR_CALIB 0x0000
44#else
45#error "Unknown CPU SUBTYPE"
46#endif
47
48static unsigned long cmt_timer_get_offset(void)
49{
50 int count;
51 static unsigned short count_p = 0xffff; /* for the first call after boot */
52 static unsigned long jiffies_p = 0;
53
54 /*
55 * cache volatile jiffies temporarily; we have IRQs turned off.
56 */
57 unsigned long jiffies_t;
58
59 /* timer count may underflow right here */
60 count = ctrl_inw(CMT_CMCOR_0);
61 count -= ctrl_inw(CMT_CMCNT_0);
62
63 jiffies_t = jiffies;
64
65 /*
66 * avoiding timer inconsistencies (they are rare, but they happen)...
67 * there is one kind of problem that must be avoided here:
68 * 1. the timer counter underflows
69 */
70
71 if (jiffies_t == jiffies_p) {
72 if (count > count_p) {
73 /* the nutcase */
74 if (ctrl_inw(CMT_CMCSR_0) & 0x80) { /* Check CMF bit */
75 count -= LATCH;
76 } else {
77 printk("%s (): hardware timer problem?\n",
78 __FUNCTION__);
79 }
80 }
81 } else
82 jiffies_p = jiffies_t;
83
84 count_p = count;
85
86 count = ((LATCH-1) - count) * TICK_SIZE;
87 count = (count + LATCH/2) / LATCH;
88
89 return count;
90}
91
92static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id)
93{
94 unsigned long timer_status;
95
96 /* Clear CMF bit */
97 timer_status = ctrl_inw(CMT_CMCSR_0);
98 timer_status &= ~0x80;
99 ctrl_outw(timer_status, CMT_CMCSR_0);
100
101 /*
102 * Here we are in the timer irq handler. We just have irqs locally
103 * disabled but we don't know if the timer_bh is running on the other
104 * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
105 * the irq version of write_lock because as just said we have irq
106 * locally disabled. -arca
107 */
108 write_seqlock(&xtime_lock);
109 handle_timer_tick();
110 write_sequnlock(&xtime_lock);
111
112 return IRQ_HANDLED;
113}
114
115static struct irqaction cmt_irq = {
116 .name = "timer",
117 .handler = cmt_timer_interrupt,
118 .flags = IRQF_DISABLED | IRQF_TIMER,
119 .mask = CPU_MASK_NONE,
120};
121
122static void cmt_clk_init(struct clk *clk)
123{
124 u8 divisor = CMT_CMCSR_INIT & 0x3;
125 ctrl_inw(CMT_CMCSR_0);
126 ctrl_outw(CMT_CMCSR_INIT, CMT_CMCSR_0);
127 clk->parent = clk_get(NULL, "module_clk");
128 clk->rate = clk->parent->rate / (8 << (divisor << 1));
129}
130
131static void cmt_clk_recalc(struct clk *clk)
132{
133 u8 divisor = ctrl_inw(CMT_CMCSR_0) & 0x3;
134 clk->rate = clk->parent->rate / (8 << (divisor << 1));
135}
136
137static struct clk_ops cmt_clk_ops = {
138 .init = cmt_clk_init,
139 .recalc = cmt_clk_recalc,
140};
141
142static struct clk cmt0_clk = {
143 .name = "cmt0_clk",
144 .ops = &cmt_clk_ops,
145};
146
147static int cmt_timer_start(void)
148{
149 ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
150 return 0;
151}
152
153static int cmt_timer_stop(void)
154{
155 ctrl_outw(ctrl_inw(CMT_CMSTR) & ~0x01, CMT_CMSTR);
156 return 0;
157}
158
159static int cmt_timer_init(void)
160{
161 unsigned long interval;
162
163 cmt_clock_enable();
164
165 setup_irq(CONFIG_SH_TIMER_IRQ, &cmt_irq);
166
167 cmt0_clk.parent = clk_get(NULL, "module_clk");
168
169 cmt_timer_stop();
170
171 interval = cmt0_clk.parent->rate / 8 / HZ;
172 printk(KERN_INFO "Interval = %ld\n", interval);
173
174 ctrl_outw(interval, CMT_CMCOR_0);
175
176 clk_register(&cmt0_clk);
177 clk_enable(&cmt0_clk);
178
179 cmt_timer_start();
180
181 return 0;
182}
183
184struct sys_timer_ops cmt_timer_ops = {
185 .init = cmt_timer_init,
186 .start = cmt_timer_start,
187 .stop = cmt_timer_stop,
188#ifndef CONFIG_GENERIC_TIME
189 .get_offset = cmt_timer_get_offset,
190#endif
191};
192
193struct sys_timer cmt_timer = {
194 .name = "cmt",
195 .ops = &cmt_timer_ops,
196};
diff --git a/arch/sh/kernel/timers/timer-mtu2.c b/arch/sh/kernel/timers/timer-mtu2.c
new file mode 100644
index 000000000000..fffcd1c09873
--- /dev/null
+++ b/arch/sh/kernel/timers/timer-mtu2.c
@@ -0,0 +1,200 @@
1/*
2 * arch/sh/kernel/timers/timer-mtu2.c - MTU2 Timer Support
3 *
4 * Copyright (C) 2005 Paul Mundt
5 *
6 * Based off of arch/sh/kernel/timers/timer-tmu.c
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12#include <linux/init.h>
13#include <linux/kernel.h>
14#include <linux/interrupt.h>
15#include <linux/seqlock.h>
16#include <asm/timer.h>
17#include <asm/io.h>
18#include <asm/irq.h>
19#include <asm/clock.h>
20
21/*
22 * We use channel 1 for our lowly system timer. Channel 2 would be the other
23 * likely candidate, but we leave it alone as it has higher divisors that
24 * would be of more use to other more interesting applications.
25 *
26 * TODO: Presently we only implement a 16-bit single-channel system timer.
27 * However, we can implement channel cascade if we go the overflow route and
28 * get away with using 2 MTU2 channels as a 32-bit timer.
29 */
30#define MTU2_TSTR 0xfffe4280
31#define MTU2_TCR_1 0xfffe4380
32#define MTU2_TMDR_1 0xfffe4381
33#define MTU2_TIOR_1 0xfffe4382
34#define MTU2_TIER_1 0xfffe4384
35#define MTU2_TSR_1 0xfffe4385
36#define MTU2_TCNT_1 0xfffe4386 /* 16-bit counter */
37#define MTU2_TGRA_1 0xfffe438a
38
39#define STBCR3 0xfffe0408
40
41#define MTU2_TSTR_CST1 (1 << 1) /* Counter Start 1 */
42
43#define MTU2_TSR_TGFA (1 << 0) /* GRA compare match */
44
45#define MTU2_TIER_TGIEA (1 << 0) /* GRA compare match interrupt enable */
46
47#define MTU2_TCR_INIT 0x22
48
49#define MTU2_TCR_CALIB 0x00
50
51static unsigned long mtu2_timer_get_offset(void)
52{
53 int count;
54 static int count_p = 0x7fff; /* for the first call after boot */
55 static unsigned long jiffies_p = 0;
56
57 /*
58 * cache volatile jiffies temporarily; we have IRQs turned off.
59 */
60 unsigned long jiffies_t;
61
62 /* timer count may underflow right here */
63 count = ctrl_inw(MTU2_TCNT_1); /* read the latched count */
64
65 jiffies_t = jiffies;
66
67 /*
68 * avoiding timer inconsistencies (they are rare, but they happen)...
69 * there is one kind of problem that must be avoided here:
70 * 1. the timer counter underflows
71 */
72
73 if (jiffies_t == jiffies_p) {
74 if (count > count_p) {
75 if (ctrl_inb(MTU2_TSR_1) & MTU2_TSR_TGFA) {
76 count -= LATCH;
77 } else {
78 printk("%s (): hardware timer problem?\n",
79 __FUNCTION__);
80 }
81 }
82 } else
83 jiffies_p = jiffies_t;
84
85 count_p = count;
86
87 count = ((LATCH-1) - count) * TICK_SIZE;
88 count = (count + LATCH/2) / LATCH;
89
90 return count;
91}
92
93static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id)
94{
95 unsigned long timer_status;
96
97 /* Clear TGFA bit */
98 timer_status = ctrl_inb(MTU2_TSR_1);
99 timer_status &= ~MTU2_TSR_TGFA;
100 ctrl_outb(timer_status, MTU2_TSR_1);
101
102 /* Do timer tick */
103 write_seqlock(&xtime_lock);
104 handle_timer_tick();
105 write_sequnlock(&xtime_lock);
106
107 return IRQ_HANDLED;
108}
109
110static struct irqaction mtu2_irq = {
111 .name = "timer",
112 .handler = mtu2_timer_interrupt,
113 .flags = IRQF_DISABLED | IRQF_TIMER,
114 .mask = CPU_MASK_NONE,
115};
116
117static unsigned int divisors[] = { 1, 4, 16, 64, 1, 1, 256 };
118
119static void mtu2_clk_init(struct clk *clk)
120{
121 u8 idx = MTU2_TCR_INIT & 0x7;
122
123 clk->rate = clk->parent->rate / divisors[idx];
124 /* Start TCNT counting */
125 ctrl_outb(ctrl_inb(MTU2_TSTR) | MTU2_TSTR_CST1, MTU2_TSTR);
126
127}
128
129static void mtu2_clk_recalc(struct clk *clk)
130{
131 u8 idx = ctrl_inb(MTU2_TCR_1) & 0x7;
132 clk->rate = clk->parent->rate / divisors[idx];
133}
134
135static struct clk_ops mtu2_clk_ops = {
136 .init = mtu2_clk_init,
137 .recalc = mtu2_clk_recalc,
138};
139
140static struct clk mtu2_clk1 = {
141 .name = "mtu2_clk1",
142 .ops = &mtu2_clk_ops,
143};
144
145static int mtu2_timer_start(void)
146{
147 ctrl_outb(ctrl_inb(MTU2_TSTR) | MTU2_TSTR_CST1, MTU2_TSTR);
148 return 0;
149}
150
151static int mtu2_timer_stop(void)
152{
153 ctrl_outb(ctrl_inb(MTU2_TSTR) & ~MTU2_TSTR_CST1, MTU2_TSTR);
154 return 0;
155}
156
157static int mtu2_timer_init(void)
158{
159 u8 tmp;
160 unsigned long interval;
161
162 setup_irq(CONFIG_SH_TIMER_IRQ, &mtu2_irq);
163
164 mtu2_clk1.parent = clk_get(NULL, "module_clk");
165
166 ctrl_outb(ctrl_inb(STBCR3) & (~0x20), STBCR3);
167
168 /* Normal operation */
169 ctrl_outb(0, MTU2_TMDR_1);
170 ctrl_outb(MTU2_TCR_INIT, MTU2_TCR_1);
171 ctrl_outb(0x01, MTU2_TIOR_1);
172
173 /* Enable underflow interrupt */
174 ctrl_outb(ctrl_inb(MTU2_TIER_1) | MTU2_TIER_TGIEA, MTU2_TIER_1);
175
176 interval = CONFIG_SH_PCLK_FREQ / 16 / HZ;
177 printk(KERN_INFO "Interval = %ld\n", interval);
178
179 ctrl_outw(interval, MTU2_TGRA_1);
180 ctrl_outw(0, MTU2_TCNT_1);
181
182 clk_register(&mtu2_clk1);
183 clk_enable(&mtu2_clk1);
184
185 return 0;
186}
187
188struct sys_timer_ops mtu2_timer_ops = {
189 .init = mtu2_timer_init,
190 .start = mtu2_timer_start,
191 .stop = mtu2_timer_stop,
192#ifndef CONFIG_GENERIC_TIME
193 .get_offset = mtu2_timer_get_offset,
194#endif
195};
196
197struct sys_timer mtu2_timer = {
198 .name = "mtu2",
199 .ops = &mtu2_timer_ops,
200};
diff --git a/arch/sh/kernel/timers/timer-tmu.c b/arch/sh/kernel/timers/timer-tmu.c
index 24927015dc31..e060e71d0785 100644
--- a/arch/sh/kernel/timers/timer-tmu.c
+++ b/arch/sh/kernel/timers/timer-tmu.c
@@ -17,7 +17,6 @@
17#include <linux/init.h> 17#include <linux/init.h>
18#include <linux/kernel.h> 18#include <linux/kernel.h>
19#include <linux/interrupt.h> 19#include <linux/interrupt.h>
20#include <linux/spinlock.h>
21#include <linux/seqlock.h> 20#include <linux/seqlock.h>
22#include <asm/timer.h> 21#include <asm/timer.h>
23#include <asm/rtc.h> 22#include <asm/rtc.h>
@@ -31,13 +30,9 @@
31 30
32#define TMU0_TCR_CALIB 0x0000 31#define TMU0_TCR_CALIB 0x0000
33 32
34static DEFINE_SPINLOCK(tmu0_lock);
35
36static unsigned long tmu_timer_get_offset(void) 33static unsigned long tmu_timer_get_offset(void)
37{ 34{
38 int count; 35 int count;
39 unsigned long flags;
40
41 static int count_p = 0x7fffffff; /* for the first call after boot */ 36 static int count_p = 0x7fffffff; /* for the first call after boot */
42 static unsigned long jiffies_p = 0; 37 static unsigned long jiffies_p = 0;
43 38
@@ -46,7 +41,6 @@ static unsigned long tmu_timer_get_offset(void)
46 */ 41 */
47 unsigned long jiffies_t; 42 unsigned long jiffies_t;
48 43
49 spin_lock_irqsave(&tmu0_lock, flags);
50 /* timer count may underflow right here */ 44 /* timer count may underflow right here */
51 count = ctrl_inl(TMU0_TCNT); /* read the latched count */ 45 count = ctrl_inl(TMU0_TCNT); /* read the latched count */
52 46
@@ -72,7 +66,6 @@ static unsigned long tmu_timer_get_offset(void)
72 jiffies_p = jiffies_t; 66 jiffies_p = jiffies_t;
73 67
74 count_p = count; 68 count_p = count;
75 spin_unlock_irqrestore(&tmu0_lock, flags);
76 69
77 count = ((LATCH-1) - count) * TICK_SIZE; 70 count = ((LATCH-1) - count) * TICK_SIZE;
78 count = (count + LATCH/2) / LATCH; 71 count = (count + LATCH/2) / LATCH;
@@ -106,7 +99,7 @@ static irqreturn_t tmu_timer_interrupt(int irq, void *dummy)
106static struct irqaction tmu_irq = { 99static struct irqaction tmu_irq = {
107 .name = "timer", 100 .name = "timer",
108 .handler = tmu_timer_interrupt, 101 .handler = tmu_timer_interrupt,
109 .flags = IRQF_DISABLED, 102 .flags = IRQF_DISABLED | IRQF_TIMER,
110 .mask = CPU_MASK_NONE, 103 .mask = CPU_MASK_NONE,
111}; 104};
112 105
@@ -149,9 +142,9 @@ static int tmu_timer_init(void)
149{ 142{
150 unsigned long interval; 143 unsigned long interval;
151 144
152 setup_irq(TIMER_IRQ, &tmu_irq); 145 setup_irq(CONFIG_SH_TIMER_IRQ, &tmu_irq);
153 146
154 tmu0_clk.parent = clk_get("module_clk"); 147 tmu0_clk.parent = clk_get(NULL, "module_clk");
155 148
156 /* Start TMU0 */ 149 /* Start TMU0 */
157 tmu_timer_stop(); 150 tmu_timer_stop();
diff --git a/arch/sh/kernel/timers/timer.c b/arch/sh/kernel/timers/timer.c
index dc1f631053a8..a6bcc913d25e 100644
--- a/arch/sh/kernel/timers/timer.c
+++ b/arch/sh/kernel/timers/timer.c
@@ -17,6 +17,12 @@ static struct sys_timer *sys_timers[] __initdata = {
17#ifdef CONFIG_SH_TMU 17#ifdef CONFIG_SH_TMU
18 &tmu_timer, 18 &tmu_timer,
19#endif 19#endif
20#ifdef CONFIG_SH_MTU2
21 &mtu2_timer,
22#endif
23#ifdef CONFIG_SH_CMT
24 &cmt_timer,
25#endif
20 NULL, 26 NULL,
21}; 27};
22 28
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c
index 53dfa55f3156..3762d9dc2046 100644
--- a/arch/sh/kernel/traps.c
+++ b/arch/sh/kernel/traps.c
@@ -18,13 +18,14 @@
18#include <linux/module.h> 18#include <linux/module.h>
19#include <linux/kallsyms.h> 19#include <linux/kallsyms.h>
20#include <linux/io.h> 20#include <linux/io.h>
21#include <linux/debug_locks.h>
21#include <asm/system.h> 22#include <asm/system.h>
22#include <asm/uaccess.h> 23#include <asm/uaccess.h>
23 24
24#ifdef CONFIG_SH_KGDB 25#ifdef CONFIG_SH_KGDB
25#include <asm/kgdb.h> 26#include <asm/kgdb.h>
26#define CHK_REMOTE_DEBUG(regs) \ 27#define CHK_REMOTE_DEBUG(regs) \
27{ \ 28{ \
28 if (kgdb_debug_hook && !user_mode(regs))\ 29 if (kgdb_debug_hook && !user_mode(regs))\
29 (*kgdb_debug_hook)(regs); \ 30 (*kgdb_debug_hook)(regs); \
30} 31}
@@ -33,8 +34,13 @@
33#endif 34#endif
34 35
35#ifdef CONFIG_CPU_SH2 36#ifdef CONFIG_CPU_SH2
36#define TRAP_RESERVED_INST 4 37# define TRAP_RESERVED_INST 4
37#define TRAP_ILLEGAL_SLOT_INST 6 38# define TRAP_ILLEGAL_SLOT_INST 6
39# define TRAP_ADDRESS_ERROR 9
40# ifdef CONFIG_CPU_SH2A
41# define TRAP_DIVZERO_ERROR 17
42# define TRAP_DIVOVF_ERROR 18
43# endif
38#else 44#else
39#define TRAP_RESERVED_INST 12 45#define TRAP_RESERVED_INST 12
40#define TRAP_ILLEGAL_SLOT_INST 13 46#define TRAP_ILLEGAL_SLOT_INST 13
@@ -88,7 +94,7 @@ void die(const char * str, struct pt_regs * regs, long err)
88 94
89 if (!user_mode(regs) || in_interrupt()) 95 if (!user_mode(regs) || in_interrupt())
90 dump_mem("Stack: ", regs->regs[15], THREAD_SIZE + 96 dump_mem("Stack: ", regs->regs[15], THREAD_SIZE +
91 (unsigned long)task_stack_page(current)); 97 (unsigned long)task_stack_page(current));
92 98
93 bust_spinlocks(0); 99 bust_spinlocks(0);
94 spin_unlock_irq(&die_lock); 100 spin_unlock_irq(&die_lock);
@@ -102,8 +108,6 @@ static inline void die_if_kernel(const char *str, struct pt_regs *regs,
102 die(str, regs, err); 108 die(str, regs, err);
103} 109}
104 110
105static int handle_unaligned_notify_count = 10;
106
107/* 111/*
108 * try and fix up kernelspace address errors 112 * try and fix up kernelspace address errors
109 * - userspace errors just cause EFAULT to be returned, resulting in SEGV 113 * - userspace errors just cause EFAULT to be returned, resulting in SEGV
@@ -198,7 +202,7 @@ static int handle_unaligned_ins(u16 instruction, struct pt_regs *regs)
198 if (copy_to_user(dst,src,4)) 202 if (copy_to_user(dst,src,4))
199 goto fetch_fault; 203 goto fetch_fault;
200 ret = 0; 204 ret = 0;
201 break; 205 break;
202 206
203 case 2: /* mov.[bwl] to memory, possibly with pre-decrement */ 207 case 2: /* mov.[bwl] to memory, possibly with pre-decrement */
204 if (instruction & 4) 208 if (instruction & 4)
@@ -222,7 +226,7 @@ static int handle_unaligned_ins(u16 instruction, struct pt_regs *regs)
222 if (copy_from_user(dst,src,4)) 226 if (copy_from_user(dst,src,4))
223 goto fetch_fault; 227 goto fetch_fault;
224 ret = 0; 228 ret = 0;
225 break; 229 break;
226 230
227 case 6: /* mov.[bwl] from memory, possibly with post-increment */ 231 case 6: /* mov.[bwl] from memory, possibly with post-increment */
228 src = (unsigned char*) *rm; 232 src = (unsigned char*) *rm;
@@ -230,7 +234,7 @@ static int handle_unaligned_ins(u16 instruction, struct pt_regs *regs)
230 *rm += count; 234 *rm += count;
231 dst = (unsigned char*) rn; 235 dst = (unsigned char*) rn;
232 *(unsigned long*)dst = 0; 236 *(unsigned long*)dst = 0;
233 237
234#ifdef __LITTLE_ENDIAN__ 238#ifdef __LITTLE_ENDIAN__
235 if (copy_from_user(dst, src, count)) 239 if (copy_from_user(dst, src, count))
236 goto fetch_fault; 240 goto fetch_fault;
@@ -241,7 +245,7 @@ static int handle_unaligned_ins(u16 instruction, struct pt_regs *regs)
241 } 245 }
242#else 246#else
243 dst += 4-count; 247 dst += 4-count;
244 248
245 if (copy_from_user(dst, src, count)) 249 if (copy_from_user(dst, src, count))
246 goto fetch_fault; 250 goto fetch_fault;
247 251
@@ -320,7 +324,8 @@ static inline int handle_unaligned_delayslot(struct pt_regs *regs)
320 return -EFAULT; 324 return -EFAULT;
321 325
322 /* kernel */ 326 /* kernel */
323 die("delay-slot-insn faulting in handle_unaligned_delayslot", regs, 0); 327 die("delay-slot-insn faulting in handle_unaligned_delayslot",
328 regs, 0);
324 } 329 }
325 330
326 return handle_unaligned_ins(instruction,regs); 331 return handle_unaligned_ins(instruction,regs);
@@ -342,6 +347,13 @@ static inline int handle_unaligned_delayslot(struct pt_regs *regs)
342#define SH_PC_8BIT_OFFSET(instr) ((((signed char)(instr))*2) + 4) 347#define SH_PC_8BIT_OFFSET(instr) ((((signed char)(instr))*2) + 4)
343#define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4) 348#define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4)
344 349
350/*
351 * XXX: SH-2A needs this too, but it needs an overhaul thanks to mixed 32-bit
352 * opcodes..
353 */
354#ifndef CONFIG_CPU_SH2A
355static int handle_unaligned_notify_count = 10;
356
345static int handle_unaligned_access(u16 instruction, struct pt_regs *regs) 357static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)
346{ 358{
347 u_int rm; 359 u_int rm;
@@ -354,7 +366,8 @@ static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)
354 if (user_mode(regs) && handle_unaligned_notify_count>0) { 366 if (user_mode(regs) && handle_unaligned_notify_count>0) {
355 handle_unaligned_notify_count--; 367 handle_unaligned_notify_count--;
356 368
357 printk("Fixing up unaligned userspace access in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", 369 printk(KERN_NOTICE "Fixing up unaligned userspace access "
370 "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n",
358 current->comm,current->pid,(u16*)regs->pc,instruction); 371 current->comm,current->pid,(u16*)regs->pc,instruction);
359 } 372 }
360 373
@@ -478,32 +491,58 @@ static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)
478 regs->pc += 2; 491 regs->pc += 2;
479 return ret; 492 return ret;
480} 493}
494#endif /* CONFIG_CPU_SH2A */
495
496#ifdef CONFIG_CPU_HAS_SR_RB
497#define lookup_exception_vector(x) \
498 __asm__ __volatile__ ("stc r2_bank, %0\n\t" : "=r" ((x)))
499#else
500#define lookup_exception_vector(x) \
501 __asm__ __volatile__ ("mov r4, %0\n\t" : "=r" ((x)))
502#endif
481 503
482/* 504/*
483 * Handle various address error exceptions 505 * Handle various address error exceptions:
506 * - instruction address error:
507 * misaligned PC
508 * PC >= 0x80000000 in user mode
509 * - data address error (read and write)
510 * misaligned data access
511 * access to >= 0x80000000 is user mode
512 * Unfortuntaly we can't distinguish between instruction address error
513 * and data address errors caused by read acceses.
484 */ 514 */
485asmlinkage void do_address_error(struct pt_regs *regs, 515asmlinkage void do_address_error(struct pt_regs *regs,
486 unsigned long writeaccess, 516 unsigned long writeaccess,
487 unsigned long address) 517 unsigned long address)
488{ 518{
489 unsigned long error_code; 519 unsigned long error_code = 0;
490 mm_segment_t oldfs; 520 mm_segment_t oldfs;
521 siginfo_t info;
522#ifndef CONFIG_CPU_SH2A
491 u16 instruction; 523 u16 instruction;
492 int tmp; 524 int tmp;
525#endif
493 526
494 asm volatile("stc r2_bank,%0": "=r" (error_code)); 527 /* Intentional ifdef */
528#ifdef CONFIG_CPU_HAS_SR_RB
529 lookup_exception_vector(error_code);
530#endif
495 531
496 oldfs = get_fs(); 532 oldfs = get_fs();
497 533
498 if (user_mode(regs)) { 534 if (user_mode(regs)) {
535 int si_code = BUS_ADRERR;
536
499 local_irq_enable(); 537 local_irq_enable();
500 current->thread.error_code = error_code;
501 current->thread.trap_no = (writeaccess) ? 8 : 7;
502 538
503 /* bad PC is not something we can fix */ 539 /* bad PC is not something we can fix */
504 if (regs->pc & 1) 540 if (regs->pc & 1) {
541 si_code = BUS_ADRALN;
505 goto uspace_segv; 542 goto uspace_segv;
543 }
506 544
545#ifndef CONFIG_CPU_SH2A
507 set_fs(USER_DS); 546 set_fs(USER_DS);
508 if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) { 547 if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) {
509 /* Argh. Fault on the instruction itself. 548 /* Argh. Fault on the instruction itself.
@@ -518,14 +557,23 @@ asmlinkage void do_address_error(struct pt_regs *regs,
518 557
519 if (tmp==0) 558 if (tmp==0)
520 return; /* sorted */ 559 return; /* sorted */
560#endif
521 561
522 uspace_segv: 562uspace_segv:
523 printk(KERN_NOTICE "Killing process \"%s\" due to unaligned access\n", current->comm); 563 printk(KERN_NOTICE "Sending SIGBUS to \"%s\" due to unaligned "
524 force_sig(SIGSEGV, current); 564 "access (PC %lx PR %lx)\n", current->comm, regs->pc,
565 regs->pr);
566
567 info.si_signo = SIGBUS;
568 info.si_errno = 0;
569 info.si_code = si_code;
570 info.si_addr = (void *) address;
571 force_sig_info(SIGBUS, &info, current);
525 } else { 572 } else {
526 if (regs->pc & 1) 573 if (regs->pc & 1)
527 die("unaligned program counter", regs, error_code); 574 die("unaligned program counter", regs, error_code);
528 575
576#ifndef CONFIG_CPU_SH2A
529 set_fs(KERNEL_DS); 577 set_fs(KERNEL_DS);
530 if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) { 578 if (copy_from_user(&instruction, (u16 *)(regs->pc), 2)) {
531 /* Argh. Fault on the instruction itself. 579 /* Argh. Fault on the instruction itself.
@@ -537,6 +585,12 @@ asmlinkage void do_address_error(struct pt_regs *regs,
537 585
538 handle_unaligned_access(instruction, regs); 586 handle_unaligned_access(instruction, regs);
539 set_fs(oldfs); 587 set_fs(oldfs);
588#else
589 printk(KERN_NOTICE "Killing process \"%s\" due to unaligned "
590 "access\n", current->comm);
591
592 force_sig(SIGSEGV, current);
593#endif
540 } 594 }
541} 595}
542 596
@@ -548,7 +602,7 @@ int is_dsp_inst(struct pt_regs *regs)
548{ 602{
549 unsigned short inst; 603 unsigned short inst;
550 604
551 /* 605 /*
552 * Safe guard if DSP mode is already enabled or we're lacking 606 * Safe guard if DSP mode is already enabled or we're lacking
553 * the DSP altogether. 607 * the DSP altogether.
554 */ 608 */
@@ -569,27 +623,49 @@ int is_dsp_inst(struct pt_regs *regs)
569#define is_dsp_inst(regs) (0) 623#define is_dsp_inst(regs) (0)
570#endif /* CONFIG_SH_DSP */ 624#endif /* CONFIG_SH_DSP */
571 625
626#ifdef CONFIG_CPU_SH2A
627asmlinkage void do_divide_error(unsigned long r4, unsigned long r5,
628 unsigned long r6, unsigned long r7,
629 struct pt_regs __regs)
630{
631 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
632 siginfo_t info;
633
634 switch (r4) {
635 case TRAP_DIVZERO_ERROR:
636 info.si_code = FPE_INTDIV;
637 break;
638 case TRAP_DIVOVF_ERROR:
639 info.si_code = FPE_INTOVF;
640 break;
641 }
642
643 force_sig_info(SIGFPE, &info, current);
644}
645#endif
646
572/* arch/sh/kernel/cpu/sh4/fpu.c */ 647/* arch/sh/kernel/cpu/sh4/fpu.c */
573extern int do_fpu_inst(unsigned short, struct pt_regs *); 648extern int do_fpu_inst(unsigned short, struct pt_regs *);
574extern asmlinkage void do_fpu_state_restore(unsigned long r4, unsigned long r5, 649extern asmlinkage void do_fpu_state_restore(unsigned long r4, unsigned long r5,
575 unsigned long r6, unsigned long r7, struct pt_regs regs); 650 unsigned long r6, unsigned long r7, struct pt_regs __regs);
576 651
577asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5, 652asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5,
578 unsigned long r6, unsigned long r7, 653 unsigned long r6, unsigned long r7,
579 struct pt_regs regs) 654 struct pt_regs __regs)
580{ 655{
656 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
581 unsigned long error_code; 657 unsigned long error_code;
582 struct task_struct *tsk = current; 658 struct task_struct *tsk = current;
583 659
584#ifdef CONFIG_SH_FPU_EMU 660#ifdef CONFIG_SH_FPU_EMU
585 unsigned short inst; 661 unsigned short inst = 0;
586 int err; 662 int err;
587 663
588 get_user(inst, (unsigned short*)regs.pc); 664 get_user(inst, (unsigned short*)regs->pc);
589 665
590 err = do_fpu_inst(inst, &regs); 666 err = do_fpu_inst(inst, regs);
591 if (!err) { 667 if (!err) {
592 regs.pc += 2; 668 regs->pc += 2;
593 return; 669 return;
594 } 670 }
595 /* not a FPU inst. */ 671 /* not a FPU inst. */
@@ -597,20 +673,19 @@ asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5,
597 673
598#ifdef CONFIG_SH_DSP 674#ifdef CONFIG_SH_DSP
599 /* Check if it's a DSP instruction */ 675 /* Check if it's a DSP instruction */
600 if (is_dsp_inst(&regs)) { 676 if (is_dsp_inst(regs)) {
601 /* Enable DSP mode, and restart instruction. */ 677 /* Enable DSP mode, and restart instruction. */
602 regs.sr |= SR_DSP; 678 regs->sr |= SR_DSP;
603 return; 679 return;
604 } 680 }
605#endif 681#endif
606 682
607 asm volatile("stc r2_bank, %0": "=r" (error_code)); 683 lookup_exception_vector(error_code);
684
608 local_irq_enable(); 685 local_irq_enable();
609 tsk->thread.error_code = error_code; 686 CHK_REMOTE_DEBUG(regs);
610 tsk->thread.trap_no = TRAP_RESERVED_INST;
611 CHK_REMOTE_DEBUG(&regs);
612 force_sig(SIGILL, tsk); 687 force_sig(SIGILL, tsk);
613 die_if_no_fixup("reserved instruction", &regs, error_code); 688 die_if_no_fixup("reserved instruction", regs, error_code);
614} 689}
615 690
616#ifdef CONFIG_SH_FPU_EMU 691#ifdef CONFIG_SH_FPU_EMU
@@ -658,39 +733,41 @@ static int emulate_branch(unsigned short inst, struct pt_regs* regs)
658 733
659asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5, 734asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5,
660 unsigned long r6, unsigned long r7, 735 unsigned long r6, unsigned long r7,
661 struct pt_regs regs) 736 struct pt_regs __regs)
662{ 737{
738 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
663 unsigned long error_code; 739 unsigned long error_code;
664 struct task_struct *tsk = current; 740 struct task_struct *tsk = current;
665#ifdef CONFIG_SH_FPU_EMU 741#ifdef CONFIG_SH_FPU_EMU
666 unsigned short inst; 742 unsigned short inst = 0;
667 743
668 get_user(inst, (unsigned short *)regs.pc + 1); 744 get_user(inst, (unsigned short *)regs->pc + 1);
669 if (!do_fpu_inst(inst, &regs)) { 745 if (!do_fpu_inst(inst, regs)) {
670 get_user(inst, (unsigned short *)regs.pc); 746 get_user(inst, (unsigned short *)regs->pc);
671 if (!emulate_branch(inst, &regs)) 747 if (!emulate_branch(inst, regs))
672 return; 748 return;
673 /* fault in branch.*/ 749 /* fault in branch.*/
674 } 750 }
675 /* not a FPU inst. */ 751 /* not a FPU inst. */
676#endif 752#endif
677 753
678 asm volatile("stc r2_bank, %0": "=r" (error_code)); 754 lookup_exception_vector(error_code);
755
679 local_irq_enable(); 756 local_irq_enable();
680 tsk->thread.error_code = error_code; 757 CHK_REMOTE_DEBUG(regs);
681 tsk->thread.trap_no = TRAP_RESERVED_INST;
682 CHK_REMOTE_DEBUG(&regs);
683 force_sig(SIGILL, tsk); 758 force_sig(SIGILL, tsk);
684 die_if_no_fixup("illegal slot instruction", &regs, error_code); 759 die_if_no_fixup("illegal slot instruction", regs, error_code);
685} 760}
686 761
687asmlinkage void do_exception_error(unsigned long r4, unsigned long r5, 762asmlinkage void do_exception_error(unsigned long r4, unsigned long r5,
688 unsigned long r6, unsigned long r7, 763 unsigned long r6, unsigned long r7,
689 struct pt_regs regs) 764 struct pt_regs __regs)
690{ 765{
766 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
691 long ex; 767 long ex;
692 asm volatile("stc r2_bank, %0" : "=r" (ex)); 768
693 die_if_kernel("exception", &regs, ex); 769 lookup_exception_vector(ex);
770 die_if_kernel("exception", regs, ex);
694} 771}
695 772
696#if defined(CONFIG_SH_STANDARD_BIOS) 773#if defined(CONFIG_SH_STANDARD_BIOS)
@@ -735,12 +812,16 @@ void *set_exception_table_vec(unsigned int vec, void *handler)
735{ 812{
736 extern void *exception_handling_table[]; 813 extern void *exception_handling_table[];
737 void *old_handler; 814 void *old_handler;
738 815
739 old_handler = exception_handling_table[vec]; 816 old_handler = exception_handling_table[vec];
740 exception_handling_table[vec] = handler; 817 exception_handling_table[vec] = handler;
741 return old_handler; 818 return old_handler;
742} 819}
743 820
821extern asmlinkage void address_error_handler(unsigned long r4, unsigned long r5,
822 unsigned long r6, unsigned long r7,
823 struct pt_regs __regs);
824
744void __init trap_init(void) 825void __init trap_init(void)
745{ 826{
746 set_exception_table_vec(TRAP_RESERVED_INST, do_reserved_inst); 827 set_exception_table_vec(TRAP_RESERVED_INST, do_reserved_inst);
@@ -759,7 +840,15 @@ void __init trap_init(void)
759 set_exception_table_evt(0x800, do_fpu_state_restore); 840 set_exception_table_evt(0x800, do_fpu_state_restore);
760 set_exception_table_evt(0x820, do_fpu_state_restore); 841 set_exception_table_evt(0x820, do_fpu_state_restore);
761#endif 842#endif
762 843
844#ifdef CONFIG_CPU_SH2
845 set_exception_table_vec(TRAP_ADDRESS_ERROR, address_error_handler);
846#endif
847#ifdef CONFIG_CPU_SH2A
848 set_exception_table_vec(TRAP_DIVZERO_ERROR, do_divide_error);
849 set_exception_table_vec(TRAP_DIVOVF_ERROR, do_divide_error);
850#endif
851
763 /* Setup VBR for boot cpu */ 852 /* Setup VBR for boot cpu */
764 per_cpu_trap_init(); 853 per_cpu_trap_init();
765} 854}
@@ -784,6 +873,11 @@ void show_trace(struct task_struct *tsk, unsigned long *sp,
784 } 873 }
785 874
786 printk("\n"); 875 printk("\n");
876
877 if (!tsk)
878 tsk = current;
879
880 debug_show_held_locks(tsk);
787} 881}
788 882
789void show_stack(struct task_struct *tsk, unsigned long *sp) 883void show_stack(struct task_struct *tsk, unsigned long *sp)
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 15:29:04 -0500