diff options
Diffstat (limited to 'arch/ppc/kernel')
-rw-r--r-- | arch/ppc/kernel/head.S | 17 | ||||
-rw-r--r-- | arch/ppc/kernel/pci.c | 59 | ||||
-rw-r--r-- | arch/ppc/kernel/ppc_ksyms.c | 6 | ||||
-rw-r--r-- | arch/ppc/kernel/semaphore.c | 131 | ||||
-rw-r--r-- | arch/ppc/kernel/setup.c | 2 |
5 files changed, 3 insertions, 212 deletions
diff --git a/arch/ppc/kernel/head.S b/arch/ppc/kernel/head.S index 1b0ec7202dd5..e7e642b95138 100644 --- a/arch/ppc/kernel/head.S +++ b/arch/ppc/kernel/head.S @@ -701,23 +701,6 @@ load_up_altivec: b fast_exception_return /* - * AltiVec unavailable trap from kernel - print a message, but let - * the task use AltiVec in the kernel until it returns to user mode. - */ -KernelAltiVec: - lwz r3,_MSR(r1) - oris r3,r3,MSR_VEC@h - stw r3,_MSR(r1) /* enable use of AltiVec after return */ - lis r3,87f@h - ori r3,r3,87f@l - mr r4,r2 /* current */ - lwz r5,_NIP(r1) - bl printk - b ret_from_except -87: .string "AltiVec used in kernel (task=%p, pc=%x) \n" - .align 4,0 - -/* * giveup_altivec(tsk) * Disable AltiVec for the task given as the argument, * and save the AltiVec registers in its thread_struct. diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c index c2ec13bea006..50ce83f20adb 100644 --- a/arch/ppc/kernel/pci.c +++ b/arch/ppc/kernel/pci.c @@ -578,39 +578,6 @@ pcibios_assign_resources(void) } -int -pcibios_enable_resources(struct pci_dev *dev, int mask) -{ - u16 cmd, old_cmd; - int idx; - struct resource *r; - - pci_read_config_word(dev, PCI_COMMAND, &cmd); - old_cmd = cmd; - for (idx=0; idx<6; idx++) { - /* Only set up the requested stuff */ - if (!(mask & (1<<idx))) - continue; - - r = &dev->resource[idx]; - if (r->flags & IORESOURCE_UNSET) { - printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); - return -EINVAL; - } - if (r->flags & IORESOURCE_IO) - cmd |= PCI_COMMAND_IO; - if (r->flags & IORESOURCE_MEM) - cmd |= PCI_COMMAND_MEMORY; - } - if (dev->resource[PCI_ROM_RESOURCE].start) - cmd |= PCI_COMMAND_MEMORY; - if (cmd != old_cmd) { - printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); - pci_write_config_word(dev, PCI_COMMAND, cmd); - } - return 0; -} - static int next_controller_index; struct pci_controller * __init @@ -785,33 +752,11 @@ pcibios_update_irq(struct pci_dev *dev, int irq) int pcibios_enable_device(struct pci_dev *dev, int mask) { - u16 cmd, old_cmd; - int idx; - struct resource *r; - if (ppc_md.pcibios_enable_device_hook) if (ppc_md.pcibios_enable_device_hook(dev, 0)) return -EINVAL; - - pci_read_config_word(dev, PCI_COMMAND, &cmd); - old_cmd = cmd; - for (idx=0; idx<6; idx++) { - r = &dev->resource[idx]; - if (r->flags & IORESOURCE_UNSET) { - printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); - return -EINVAL; - } - if (r->flags & IORESOURCE_IO) - cmd |= PCI_COMMAND_IO; - if (r->flags & IORESOURCE_MEM) - cmd |= PCI_COMMAND_MEMORY; - } - if (cmd != old_cmd) { - printk("PCI: Enabling device %s (%04x -> %04x)\n", - pci_name(dev), old_cmd, cmd); - pci_write_config_word(dev, PCI_COMMAND, cmd); - } - return 0; + + return pci_enable_resources(dev, mask); } struct pci_controller* diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c index c35350250cfc..d9036ef0b658 100644 --- a/arch/ppc/kernel/ppc_ksyms.c +++ b/arch/ppc/kernel/ppc_ksyms.c @@ -12,7 +12,6 @@ #include <linux/irq.h> #include <linux/pci.h> #include <linux/delay.h> -#include <linux/ide.h> #include <linux/pm.h> #include <linux/bitops.h> @@ -89,6 +88,7 @@ EXPORT_SYMBOL(strncpy); EXPORT_SYMBOL(strcat); EXPORT_SYMBOL(strlen); EXPORT_SYMBOL(strcmp); +EXPORT_SYMBOL(strncmp); EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(csum_partial_copy_generic); @@ -124,10 +124,6 @@ EXPORT_SYMBOL(__ioremap); EXPORT_SYMBOL(iounmap); EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) -EXPORT_SYMBOL(ppc_ide_md); -#endif - #ifdef CONFIG_PCI EXPORT_SYMBOL(isa_io_base); EXPORT_SYMBOL(isa_mem_base); diff --git a/arch/ppc/kernel/semaphore.c b/arch/ppc/kernel/semaphore.c deleted file mode 100644 index 2fe429b27c14..000000000000 --- a/arch/ppc/kernel/semaphore.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * PowerPC-specific semaphore code. - * - * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * April 2001 - Reworked by Paul Mackerras <paulus@samba.org> - * to eliminate the SMP races in the old version between the updates - * of `count' and `waking'. Now we use negative `count' values to - * indicate that some process(es) are waiting for the semaphore. - */ - -#include <linux/sched.h> -#include <linux/init.h> -#include <asm/atomic.h> -#include <asm/semaphore.h> -#include <asm/errno.h> - -/* - * Atomically update sem->count. - * This does the equivalent of the following: - * - * old_count = sem->count; - * tmp = MAX(old_count, 0) + incr; - * sem->count = tmp; - * return old_count; - */ -static inline int __sem_update_count(struct semaphore *sem, int incr) -{ - int old_count, tmp; - - __asm__ __volatile__("\n" -"1: lwarx %0,0,%3\n" -" srawi %1,%0,31\n" -" andc %1,%0,%1\n" -" add %1,%1,%4\n" - PPC405_ERR77(0,%3) -" stwcx. %1,0,%3\n" -" bne 1b" - : "=&r" (old_count), "=&r" (tmp), "=m" (sem->count) - : "r" (&sem->count), "r" (incr), "m" (sem->count) - : "cc"); - - return old_count; -} - -void __up(struct semaphore *sem) -{ - /* - * Note that we incremented count in up() before we came here, - * but that was ineffective since the result was <= 0, and - * any negative value of count is equivalent to 0. - * This ends up setting count to 1, unless count is now > 0 - * (i.e. because some other cpu has called up() in the meantime), - * in which case we just increment count. - */ - __sem_update_count(sem, 1); - wake_up(&sem->wait); -} - -/* - * Note that when we come in to __down or __down_interruptible, - * we have already decremented count, but that decrement was - * ineffective since the result was < 0, and any negative value - * of count is equivalent to 0. - * Thus it is only when we decrement count from some value > 0 - * that we have actually got the semaphore. - */ -void __sched __down(struct semaphore *sem) -{ - struct task_struct *tsk = current; - DECLARE_WAITQUEUE(wait, tsk); - - tsk->state = TASK_UNINTERRUPTIBLE; - add_wait_queue_exclusive(&sem->wait, &wait); - smp_wmb(); - - /* - * Try to get the semaphore. If the count is > 0, then we've - * got the semaphore; we decrement count and exit the loop. - * If the count is 0 or negative, we set it to -1, indicating - * that we are asleep, and then sleep. - */ - while (__sem_update_count(sem, -1) <= 0) { - schedule(); - tsk->state = TASK_UNINTERRUPTIBLE; - } - remove_wait_queue(&sem->wait, &wait); - tsk->state = TASK_RUNNING; - - /* - * If there are any more sleepers, wake one of them up so - * that it can either get the semaphore, or set count to -1 - * indicating that there are still processes sleeping. - */ - wake_up(&sem->wait); -} - -int __sched __down_interruptible(struct semaphore * sem) -{ - int retval = 0; - struct task_struct *tsk = current; - DECLARE_WAITQUEUE(wait, tsk); - - tsk->state = TASK_INTERRUPTIBLE; - add_wait_queue_exclusive(&sem->wait, &wait); - smp_wmb(); - - while (__sem_update_count(sem, -1) <= 0) { - if (signal_pending(current)) { - /* - * A signal is pending - give up trying. - * Set sem->count to 0 if it is negative, - * since we are no longer sleeping. - */ - __sem_update_count(sem, 0); - retval = -EINTR; - break; - } - schedule(); - tsk->state = TASK_INTERRUPTIBLE; - } - tsk->state = TASK_RUNNING; - remove_wait_queue(&sem->wait, &wait); - wake_up(&sem->wait); - return retval; -} diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c index 294055902f0c..bfddfdee0b65 100644 --- a/arch/ppc/kernel/setup.c +++ b/arch/ppc/kernel/setup.c @@ -10,7 +10,6 @@ #include <linux/reboot.h> #include <linux/delay.h> #include <linux/initrd.h> -#include <linux/ide.h> #include <linux/screen_info.h> #include <linux/bootmem.h> #include <linux/seq_file.h> @@ -57,7 +56,6 @@ extern void ppc6xx_idle(void); extern void power4_idle(void); extern boot_infos_t *boot_infos; -struct ide_machdep_calls ppc_ide_md; /* Used with the BI_MEMSIZE bootinfo parameter to store the memory size value reported by the boot loader. */ |