lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

Browse Source 
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
  [POWERPC] Add memchr() to the bootwrapper
  [POWERPC] Implement logging of unhandled signals
  [POWERPC] Add legacy serial support for OPB with flattened device tree
  [POWERPC] Use 1TB segments
  [POWERPC] XilinxFB: Allow fixed framebuffer base address
  [POWERPC] XilinxFB: Add support for custom screen resolution
  [POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
  [POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
  [POWERPC] 4xx: Kilauea defconfig file
  [POWERPC] 4xx: Kilauea DTS
  [POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
  [POWERPC] 4xx: Add AMCC 405EX support to cputable.c
  [POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
  [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
  [POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
  [POWERPC] 85xx: Killed <asm/mpc85xx.h>
  [POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
  [POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
  [POWERPC] mpc8272ads: Remove muram from the CPM reg property.
  [POWERPC] Make clockevents work on PPC601 processors
  ...

Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.
This commit is contained in:
Linus Torvalds
2007-10-11 21:55:47 -07:00
parent 5473074209 9b4b8feb96
commit e86908614f
529 changed files with 31146 additions and 13497 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
arch/powerpc/kernel/irq.c
View File

@ -52,6 +52,7 @@
#include <linux/mutex.h>
#include <linux/bootmem.h>
#include <linux/pci.h>
#include <linux/debugfs.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@ -272,7 +273,7 @@ void do_IRQ(struct pt_regs *regs)
struct thread_info *curtp, *irqtp;
#endif
irq_enter();
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/* Debugging check for stack overflow: is there less than 2KB free? */
@ -321,7 +322,7 @@ void do_IRQ(struct pt_regs *regs)
/* That's not SMP safe ... but who cares ? */
ppc_spurious_interrupts++;
irq_exit();
irq_exit();
set_irq_regs(old_regs);
#ifdef CONFIG_PPC_ISERIES
@ -417,10 +418,16 @@ irq_hw_number_t virq_to_hw(unsigned int virq)
}
EXPORT_SYMBOL_GPL(virq_to_hw);
__init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
unsigned int revmap_arg,
struct irq_host_ops *ops,
irq_hw_number_t inval_irq)
static int default_irq_host_match(struct irq_host *h, struct device_node *np)
{
return h->of_node != NULL && h->of_node == np;
}
struct irq_host *irq_alloc_host(struct device_node *of_node,
unsigned int revmap_type,
unsigned int revmap_arg,
struct irq_host_ops *ops,
irq_hw_number_t inval_irq)
{
struct irq_host *host;
unsigned int size = sizeof(struct irq_host);
@ -431,13 +438,7 @@ __init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
/* Allocate structure and revmap table if using linear mapping */
if (revmap_type == IRQ_HOST_MAP_LINEAR)
size += revmap_arg * sizeof(unsigned int);
if (mem_init_done)
host = kzalloc(size, GFP_KERNEL);
else {
host = alloc_bootmem(size);
if (host)
memset(host, 0, size);
}
host = zalloc_maybe_bootmem(size, GFP_KERNEL);
if (host == NULL)
return NULL;
@ -445,6 +446,10 @@ __init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
host->revmap_type = revmap_type;
host->inval_irq = inval_irq;
host->ops = ops;
host->of_node = of_node;
if (host->ops->match == NULL)
host->ops->match = default_irq_host_match;
spin_lock_irqsave(&irq_big_lock, flags);
@ -476,7 +481,7 @@ __init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
host->inval_irq = 0;
/* setup us as the host for all legacy interrupts */
for (i = 1; i < NUM_ISA_INTERRUPTS; i++) {
irq_map[i].hwirq = 0;
irq_map[i].hwirq = i;
smp_wmb();
irq_map[i].host = host;
smp_wmb();
@ -520,7 +525,7 @@ struct irq_host *irq_find_host(struct device_node *node)
*/
spin_lock_irqsave(&irq_big_lock, flags);
list_for_each_entry(h, &irq_hosts, link)
if (h->ops->match == NULL || h->ops->match(h, node)) {
if (h->ops->match(h, node)) {
found = h;
break;
}
@ -995,6 +1000,68 @@ static int irq_late_init(void)
}
arch_initcall(irq_late_init);
#ifdef CONFIG_VIRQ_DEBUG
static int virq_debug_show(struct seq_file *m, void *private)
{
unsigned long flags;
irq_desc_t *desc;
const char *p;
char none[] = "none";
int i;
seq_printf(m, "%-5s %-7s %-15s %s\n", "virq", "hwirq",
"chip name", "host name");
for (i = 1; i < NR_IRQS; i++) {
desc = get_irq_desc(i);
spin_lock_irqsave(&desc->lock, flags);
if (desc->action && desc->action->handler) {
seq_printf(m, "%5d ", i);
seq_printf(m, "0x%05lx ", virq_to_hw(i));
if (desc->chip && desc->chip->typename)
p = desc->chip->typename;
else
p = none;
seq_printf(m, "%-15s ", p);
if (irq_map[i].host && irq_map[i].host->of_node)
p = irq_map[i].host->of_node->full_name;
else
p = none;
seq_printf(m, "%s\n", p);
}
spin_unlock_irqrestore(&desc->lock, flags);
}
return 0;
}
static int virq_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, virq_debug_show, inode->i_private);
}
static const struct file_operations virq_debug_fops = {
.open = virq_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init irq_debugfs_init(void)
{
if (debugfs_create_file("virq_mapping", S_IRUGO, powerpc_debugfs_root,
NULL, &virq_debug_fops))
return -ENOMEM;
return 0;
}
__initcall(irq_debugfs_init);
#endif /* CONFIG_VIRQ_DEBUG */
#endif /* CONFIG_PPC_MERGE */
#ifdef CONFIG_PPC64