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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Remove IOMMU_VMERGE config option
  powerpc: Fix swiotlb to respect the boot option
  powerpc: Do not call prink when CONFIG_PRINTK is not defined
  powerpc: Use correct ccr bit for syscall error status
  powerpc/fsl-booke: Get coherent bit from PTE
  powerpc/85xx: Make sure lwarx hint isn't set on ppc32
This commit is contained in:
Linus Torvalds 2010-03-19 13:42:43 -07:00
commit 95c46afe60
8 changed files with 17 additions and 40 deletions
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13
arch/powerpc/Kconfig
View file

@ -313,19 +313,6 @@ config 8XX_MINIMAL_FPEMU
It is recommended that you build a soft-float userspace instead.
config IOMMU_VMERGE
bool "Enable IOMMU virtual merging"
depends on PPC64
default y
help
Cause IO segments sent to a device for DMA to be merged virtually
by the IOMMU when they happen to have been allocated contiguously.
This doesn't add pressure to the IOMMU allocator. However, some
drivers don't support getting large merged segments coming back
from *_map_sg().
Most drivers don't have this problem; it is safe to say Y here.
config IOMMU_HELPER
def_bool PPC64

6
arch/powerpc/include/asm/ppc-opcode.h
View file

@ -25,7 +25,7 @@
#define PPC_INST_LDARX 0x7c0000a8
#define PPC_INST_LSWI 0x7c0004aa
#define PPC_INST_LSWX 0x7c00042a
#define PPC_INST_LWARX 0x7c000029
#define PPC_INST_LWARX 0x7c000028
#define PPC_INST_LWSYNC 0x7c2004ac
#define PPC_INST_LXVD2X 0x7c000698
#define PPC_INST_MCRXR 0x7c000400
@ -62,8 +62,8 @@
#define __PPC_T_TLB(t) (((t) & 0x3) << 21)
#define __PPC_WC(w) (((w) & 0x3) << 21)
/*
* Only use the larx hint bit on 64bit CPUs. Once we verify it doesn't have
* any side effects on all 32bit processors, we can do this all the time.
* Only use the larx hint bit on 64bit CPUs. e500v1/v2 based CPUs will treat a
* larx with EH set as an illegal instruction.
*/
#ifdef CONFIG_PPC64
#define __PPC_EH(eh) (((eh) & 0x1) << 0)

6
arch/powerpc/include/asm/syscall.h
View file

@ -30,7 +30,7 @@ static inline void syscall_rollback(struct task_struct *task,
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
return (regs->ccr & 0x1000) ? -regs->gpr[3] : 0;
return (regs->ccr & 0x10000000) ? -regs->gpr[3] : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
@ -44,10 +44,10 @@ static inline void syscall_set_return_value(struct task_struct *task,
int error, long val)
{
if (error) {
regs->ccr |= 0x1000L;
regs->ccr |= 0x10000000L;
regs->gpr[3] = -error;
} else {
regs->ccr &= ~0x1000L;
regs->ccr &= ~0x10000000L;
regs->gpr[3] = val;
}
}

7
arch/powerpc/kernel/head_fsl_booke.S
View file

@ -746,9 +746,6 @@ finish_tlb_load:
rlwimi r12, r11, 32-19, 27, 31 /* extract WIMGE from pte */
#else
rlwimi r12, r11, 26, 27, 31 /* extract WIMGE from pte */
#endif
#ifdef CONFIG_SMP
ori r12, r12, MAS2_M
#endif
mtspr SPRN_MAS2, r12
@ -887,13 +884,17 @@ KernelSPE:
lwz r3,_MSR(r1)
oris r3,r3,MSR_SPE@h
stw r3,_MSR(r1) /* enable use of SPE after return */
#ifdef CONFIG_PRINTK
lis r3,87f@h
ori r3,r3,87f@l
mr r4,r2 /* current */
lwz r5,_NIP(r1)
bl printk
#endif
b ret_from_except
#ifdef CONFIG_PRINTK
87: .string "SPE used in kernel (task=%p, pc=%x) \n"
#endif
.align 4,0
#endif /* CONFIG_SPE */

7
arch/powerpc/kernel/iommu.c
View file

@ -42,12 +42,7 @@
#define DBG(...)
#ifdef CONFIG_IOMMU_VMERGE
static int novmerge = 0;
#else
static int novmerge = 1;
#endif
static int novmerge;
static int protect4gb = 1;
static void __iommu_free(struct iommu_table *, dma_addr_t, unsigned int);

6
arch/powerpc/kernel/setup_32.c
View file

@ -39,7 +39,6 @@
#include <asm/serial.h>
#include <asm/udbg.h>
#include <asm/mmu_context.h>
#include <asm/swiotlb.h>
#include "setup.h"
@ -343,11 +342,6 @@ void __init setup_arch(char **cmdline_p)
ppc_md.setup_arch();
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
#ifdef CONFIG_SWIOTLB
if (ppc_swiotlb_enable)
swiotlb_init(1);
#endif
paging_init();
/* Initialize the MMU context management stuff */

6
arch/powerpc/kernel/setup_64.c
View file

@ -61,7 +61,6 @@
#include <asm/xmon.h>
#include <asm/udbg.h>
#include <asm/kexec.h>
#include <asm/swiotlb.h>
#include <asm/mmu_context.h>
#include "setup.h"
@ -541,11 +540,6 @@ void __init setup_arch(char **cmdline_p)
if (ppc_md.setup_arch)
ppc_md.setup_arch();
#ifdef CONFIG_SWIOTLB
if (ppc_swiotlb_enable)
swiotlb_init(1);
#endif
paging_init();
/* Initialize the MMU context management stuff */

6
arch/powerpc/mm/mem.c
View file

@ -48,6 +48,7 @@
#include <asm/sparsemem.h>
#include <asm/vdso.h>
#include <asm/fixmap.h>
#include <asm/swiotlb.h>
#include "mmu_decl.h"
@ -320,6 +321,11 @@ void __init mem_init(void)
struct page *page;
unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize;
#ifdef CONFIG_SWIOTLB
if (ppc_swiotlb_enable)
swiotlb_init(1);
#endif
num_physpages = lmb.memory.size >> PAGE_SHIFT;
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);