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-rw-r--r--arch/parisc/kernel/irq.c41
-rw-r--r--arch/parisc/kernel/pdc_cons.c141
-rw-r--r--arch/parisc/kernel/ptrace.c13
-rw-r--r--arch/parisc/kernel/syscall_table.S1
-rw-r--r--arch/parisc/kernel/unaligned.c3
-rw-r--r--arch/parisc/kernel/unwind.c5
6 files changed, 164 insertions, 40 deletions
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index efbcee5d222..5024f643b3b 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -52,7 +52,7 @@ static volatile unsigned long cpu_eiem = 0;
*/
static DEFINE_PER_CPU(unsigned long, local_ack_eiem) = ~0UL;
-static void cpu_disable_irq(unsigned int irq)
+static void cpu_mask_irq(unsigned int irq)
{
unsigned long eirr_bit = EIEM_MASK(irq);
@@ -63,7 +63,7 @@ static void cpu_disable_irq(unsigned int irq)
* then gets disabled */
}
-static void cpu_enable_irq(unsigned int irq)
+static void cpu_unmask_irq(unsigned int irq)
{
unsigned long eirr_bit = EIEM_MASK(irq);
@@ -75,12 +75,6 @@ static void cpu_enable_irq(unsigned int irq)
smp_send_all_nop();
}
-static unsigned int cpu_startup_irq(unsigned int irq)
-{
- cpu_enable_irq(irq);
- return 0;
-}
-
void no_ack_irq(unsigned int irq) { }
void no_end_irq(unsigned int irq) { }
@@ -99,7 +93,7 @@ void cpu_ack_irq(unsigned int irq)
mtctl(mask, 23);
}
-void cpu_end_irq(unsigned int irq)
+void cpu_eoi_irq(unsigned int irq)
{
unsigned long mask = EIEM_MASK(irq);
int cpu = smp_processor_id();
@@ -146,12 +140,10 @@ static int cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
static struct irq_chip cpu_interrupt_type = {
.name = "CPU",
- .startup = cpu_startup_irq,
- .shutdown = cpu_disable_irq,
- .enable = cpu_enable_irq,
- .disable = cpu_disable_irq,
+ .mask = cpu_mask_irq,
+ .unmask = cpu_unmask_irq,
.ack = cpu_ack_irq,
- .end = cpu_end_irq,
+ .eoi = cpu_eoi_irq,
#ifdef CONFIG_SMP
.set_affinity = cpu_set_affinity_irq,
#endif
@@ -247,10 +239,11 @@ int cpu_claim_irq(unsigned int irq, struct irq_chip *type, void *data)
if (irq_desc[irq].chip != &cpu_interrupt_type)
return -EBUSY;
+ /* for iosapic interrupts */
if (type) {
- irq_desc[irq].chip = type;
- irq_desc[irq].chip_data = data;
- cpu_interrupt_type.enable(irq);
+ set_irq_chip_and_handler(irq, type, handle_level_irq);
+ set_irq_chip_data(irq, data);
+ cpu_unmask_irq(irq);
}
return 0;
}
@@ -368,7 +361,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
goto set_out;
}
#endif
- __do_IRQ(irq);
+ generic_handle_irq(irq);
out:
irq_exit();
@@ -398,14 +391,15 @@ static void claim_cpu_irqs(void)
{
int i;
for (i = CPU_IRQ_BASE; i <= CPU_IRQ_MAX; i++) {
- irq_desc[i].chip = &cpu_interrupt_type;
+ set_irq_chip_and_handler(i, &cpu_interrupt_type,
+ handle_level_irq);
}
- irq_desc[TIMER_IRQ].action = &timer_action;
- irq_desc[TIMER_IRQ].status = IRQ_PER_CPU;
+ set_irq_handler(TIMER_IRQ, handle_percpu_irq);
+ setup_irq(TIMER_IRQ, &timer_action);
#ifdef CONFIG_SMP
- irq_desc[IPI_IRQ].action = &ipi_action;
- irq_desc[IPI_IRQ].status = IRQ_PER_CPU;
+ set_irq_handler(IPI_IRQ, handle_percpu_irq);
+ setup_irq(IPI_IRQ, &ipi_action);
#endif
}
@@ -423,3 +417,4 @@ void __init init_IRQ(void)
set_eiem(cpu_eiem); /* EIEM : enable all external intr */
}
+
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index 1ff366cb968..66d1f17fdb9 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -12,6 +12,7 @@
* Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
+ * Copyright (C) 2010 Guy Martin <gmsoft at tuxicoman.be>
*
*
* This program is free software; you can redistribute it and/or modify
@@ -31,12 +32,11 @@
/*
* The PDC console is a simple console, which can be used for debugging
- * boot related problems on HP PA-RISC machines.
+ * boot related problems on HP PA-RISC machines. It is also useful when no
+ * other console works.
*
* This code uses the ROM (=PDC) based functions to read and write characters
* from and to PDC's boot path.
- * Since all character read from that path must be polled, this code never
- * can or will be a fully functional linux console.
*/
/* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems.
@@ -53,6 +53,7 @@
#include <asm/pdc.h> /* for iodc_call() proto and friends */
static DEFINE_SPINLOCK(pdc_console_lock);
+static struct console pdc_cons;
static void pdc_console_write(struct console *co, const char *s, unsigned count)
{
@@ -85,12 +86,138 @@ static int pdc_console_setup(struct console *co, char *options)
#if defined(CONFIG_PDC_CONSOLE)
#include <linux/vt_kern.h>
+#include <linux/tty_flip.h>
+
+#define PDC_CONS_POLL_DELAY (30 * HZ / 1000)
+
+static struct timer_list pdc_console_timer;
+
+extern struct console * console_drivers;
+
+static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp)
+{
+
+ mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
+
+ return 0;
+}
+
+static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp)
+{
+ if (!tty->count)
+ del_timer(&pdc_console_timer);
+}
+
+static int pdc_console_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+ pdc_console_write(NULL, buf, count);
+ return count;
+}
+
+static int pdc_console_tty_write_room(struct tty_struct *tty)
+{
+ return 32768; /* no limit, no buffer used */
+}
+
+static int pdc_console_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ return 0; /* no buffer */
+}
+
+static struct tty_driver *pdc_console_tty_driver;
+
+static const struct tty_operations pdc_console_tty_ops = {
+ .open = pdc_console_tty_open,
+ .close = pdc_console_tty_close,
+ .write = pdc_console_tty_write,
+ .write_room = pdc_console_tty_write_room,
+ .chars_in_buffer = pdc_console_tty_chars_in_buffer,
+};
+
+static void pdc_console_poll(unsigned long unused)
+{
+
+ int data, count = 0;
+
+ struct tty_struct *tty = pdc_console_tty_driver->ttys[0];
+
+ if (!tty)
+ return;
+
+ while (1) {
+ data = pdc_console_poll_key(NULL);
+ if (data == -1)
+ break;
+ tty_insert_flip_char(tty, data & 0xFF, TTY_NORMAL);
+ count ++;
+ }
+
+ if (count)
+ tty_flip_buffer_push(tty);
+
+ if (tty->count && (pdc_cons.flags & CON_ENABLED))
+ mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
+}
+
+static int __init pdc_console_tty_driver_init(void)
+{
+
+ int err;
+ struct tty_driver *drv;
+
+ /* Check if the console driver is still registered.
+ * It is unregistered if the pdc console was not selected as the
+ * primary console. */
+
+ struct console *tmp = console_drivers;
+
+ for (tmp = console_drivers; tmp; tmp = tmp->next)
+ if (tmp == &pdc_cons)
+ break;
+
+ if (!tmp) {
+ printk(KERN_INFO "PDC console driver not registered anymore, not creating %s\n", pdc_cons.name);
+ return -ENODEV;
+ }
+
+ printk(KERN_INFO "The PDC console driver is still registered, removing CON_BOOT flag\n");
+ pdc_cons.flags &= ~CON_BOOT;
+
+ drv = alloc_tty_driver(1);
+
+ if (!drv)
+ return -ENOMEM;
+
+ drv->driver_name = "pdc_cons";
+ drv->name = "ttyB";
+ drv->major = MUX_MAJOR;
+ drv->minor_start = 0;
+ drv->type = TTY_DRIVER_TYPE_SYSTEM;
+ drv->init_termios = tty_std_termios;
+ drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
+ tty_set_operations(drv, &pdc_console_tty_ops);
+
+ err = tty_register_driver(drv);
+ if (err) {
+ printk(KERN_ERR "Unable to register the PDC console TTY driver\n");
+ return err;
+ }
+
+ pdc_console_tty_driver = drv;
+
+ /* No need to initialize the pdc_console_timer if tty isn't allocated */
+ init_timer(&pdc_console_timer);
+ pdc_console_timer.function = pdc_console_poll;
+
+ return 0;
+}
+
+module_init(pdc_console_tty_driver_init);
static struct tty_driver * pdc_console_device (struct console *c, int *index)
{
- extern struct tty_driver console_driver;
- *index = c->index ? c->index-1 : fg_console;
- return &console_driver;
+ *index = c->index;
+ return pdc_console_tty_driver;
}
#else
#define pdc_console_device NULL
@@ -101,7 +228,7 @@ static struct console pdc_cons = {
.write = pdc_console_write,
.device = pdc_console_device,
.setup = pdc_console_setup,
- .flags = CON_BOOT | CON_PRINTBUFFER | CON_ENABLED,
+ .flags = CON_BOOT | CON_PRINTBUFFER,
.index = -1,
};
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index c4f49e45129..2905b1f52d3 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -110,7 +110,8 @@ void user_enable_block_step(struct task_struct *task)
pa_psw(task)->l = 0;
}
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+ unsigned long addr, unsigned long data)
{
unsigned long tmp;
long ret = -EIO;
@@ -120,11 +121,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
/* Read the word at location addr in the USER area. For ptraced
processes, the kernel saves all regs on a syscall. */
case PTRACE_PEEKUSR:
- if ((addr & (sizeof(long)-1)) ||
- (unsigned long) addr >= sizeof(struct pt_regs))
+ if ((addr & (sizeof(unsigned long)-1)) ||
+ addr >= sizeof(struct pt_regs))
break;
tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
- ret = put_user(tmp, (unsigned long *) data);
+ ret = put_user(tmp, (unsigned long __user *) data);
break;
/* Write the word at location addr in the USER area. This will need
@@ -151,8 +152,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
}
- if ((addr & (sizeof(long)-1)) ||
- (unsigned long) addr >= sizeof(struct pt_regs))
+ if ((addr & (sizeof(unsigned long)-1)) ||
+ addr >= sizeof(struct pt_regs))
break;
if ((addr >= PT_GR1 && addr <= PT_GR31) ||
addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 3d52c978738..74867dfdabe 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -419,6 +419,7 @@
ENTRY_SAME(perf_event_open)
ENTRY_COMP(recvmmsg)
ENTRY_SAME(accept4) /* 320 */
+ ENTRY_SAME(prlimit64)
/* Nothing yet */
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 92d977bb5ea..234e3682cf0 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -619,15 +619,12 @@ void handle_unaligned(struct pt_regs *regs)
flop=1;
ret = emulate_std(regs, R2(regs->iir),1);
break;
-
-#ifdef CONFIG_PA20
case OPCODE_LDD_L:
ret = emulate_ldd(regs, R2(regs->iir),0);
break;
case OPCODE_STD_L:
ret = emulate_std(regs, R2(regs->iir),0);
break;
-#endif
}
#endif
switch (regs->iir & OPCODE3_MASK)
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index d58eac1a828..76ed62ed785 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -80,8 +80,11 @@ find_unwind_entry(unsigned long addr)
if (addr >= table->start &&
addr <= table->end)
e = find_unwind_entry_in_table(table, addr);
- if (e)
+ if (e) {
+ /* Move-to-front to exploit common traces */
+ list_move(&table->list, &unwind_tables);
break;
+ }
}
return e;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 18:40:44 +0000