diff options
Diffstat (limited to 'include/asm-parisc')
| -rw-r--r-- | include/asm-parisc/assembly.h | 25 | ||||
| -rw-r--r-- | include/asm-parisc/psw.h | 51 | ||||
| -rw-r--r-- | include/asm-parisc/tlbflush.h | 9 |
3 files changed, 54 insertions, 31 deletions
diff --git a/include/asm-parisc/assembly.h b/include/asm-parisc/assembly.h index 30b023411fe..b24a99e3ef9 100644 --- a/include/asm-parisc/assembly.h +++ b/include/asm-parisc/assembly.h @@ -450,5 +450,30 @@ REST_CR (%cr22, PT_PSW (\regs)) .endm + + /* First step to create a "relied upon translation" + * See PA 2.0 Arch. page F-4 and F-5. + * + * The ssm was originally necessary due to a "PCxT bug". + * But someone decided it needed to be added to the architecture + * and this "feature" went into rev3 of PA-RISC 1.1 Arch Manual. + * It's been carried forward into PA 2.0 Arch as well. :^( + * + * "ssm 0,%r0" is a NOP with side effects (prefetch barrier). + * rsm/ssm prevents the ifetch unit from speculatively fetching + * instructions past this line in the code stream. + * PA 2.0 processor will single step all insn in the same QUAD (4 insn). + */ + .macro pcxt_ssm_bug + rsm PSW_SM_I,%r0 + nop /* 1 */ + nop /* 2 */ + nop /* 3 */ + nop /* 4 */ + nop /* 5 */ + nop /* 6 */ + nop /* 7 */ + .endm + #endif /* __ASSEMBLY__ */ #endif diff --git a/include/asm-parisc/psw.h b/include/asm-parisc/psw.h index 51323029f37..4334d6ca2ad 100644 --- a/include/asm-parisc/psw.h +++ b/include/asm-parisc/psw.h @@ -1,4 +1,7 @@ #ifndef _PARISC_PSW_H + +#include <linux/config.h> + #define PSW_I 0x00000001 #define PSW_D 0x00000002 #define PSW_P 0x00000004 @@ -9,6 +12,16 @@ #define PSW_G 0x00000040 /* PA1.x only */ #define PSW_O 0x00000080 /* PA2.0 only */ +/* ssm/rsm instructions number PSW_W and PSW_E differently */ +#define PSW_SM_I PSW_I /* Enable External Interrupts */ +#define PSW_SM_D PSW_D +#define PSW_SM_P PSW_P +#define PSW_SM_Q PSW_Q /* Enable Interrupt State Collection */ +#define PSW_SM_R PSW_R /* Enable Recover Counter Trap */ +#define PSW_SM_W 0x200 /* PA2.0 only : Enable Wide Mode */ + +#define PSW_SM_QUIET PSW_SM_R+PSW_SM_Q+PSW_SM_P+PSW_SM_D+PSW_SM_I + #define PSW_CB 0x0000ff00 #define PSW_M 0x00010000 @@ -30,33 +43,21 @@ #define PSW_Z 0x40000000 /* PA1.x only */ #define PSW_Y 0x80000000 /* PA1.x only */ -#ifdef __LP64__ -#define PSW_HI_CB 0x000000ff /* PA2.0 only */ +#ifdef CONFIG_64BIT +# define PSW_HI_CB 0x000000ff /* PA2.0 only */ #endif -/* PSW bits to be used with ssm/rsm */ -#define PSW_SM_I 0x1 -#define PSW_SM_D 0x2 -#define PSW_SM_P 0x4 -#define PSW_SM_Q 0x8 -#define PSW_SM_R 0x10 -#define PSW_SM_F 0x20 -#define PSW_SM_G 0x40 -#define PSW_SM_O 0x80 -#define PSW_SM_E 0x100 -#define PSW_SM_W 0x200 - -#ifdef __LP64__ -# define USER_PSW (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I) -# define KERNEL_PSW (PSW_W | PSW_C | PSW_Q | PSW_P | PSW_D) -# define REAL_MODE_PSW (PSW_W | PSW_Q) -# define USER_PSW_MASK (PSW_W | PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB) -# define USER_PSW_HI_MASK (PSW_HI_CB) -#else -# define USER_PSW (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I) -# define KERNEL_PSW (PSW_C | PSW_Q | PSW_P | PSW_D) -# define REAL_MODE_PSW (PSW_Q) -# define USER_PSW_MASK (PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB) +#ifdef CONFIG_64BIT +# define USER_PSW_HI_MASK PSW_HI_CB +# define WIDE_PSW PSW_W +#else +# define WIDE_PSW 0 #endif +/* Used when setting up for rfi */ +#define KERNEL_PSW (WIDE_PSW | PSW_C | PSW_Q | PSW_P | PSW_D) +#define REAL_MODE_PSW (WIDE_PSW | PSW_Q) +#define USER_PSW_MASK (WIDE_PSW | PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB) +#define USER_PSW (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I) + #endif diff --git a/include/asm-parisc/tlbflush.h b/include/asm-parisc/tlbflush.h index eb27b78930e..efbb2d8625b 100644 --- a/include/asm-parisc/tlbflush.h +++ b/include/asm-parisc/tlbflush.h @@ -64,29 +64,26 @@ static inline void flush_tlb_range(struct vm_area_struct *vma, { unsigned long npages; - npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT; - if (npages >= 512) /* XXX arbitrary, should be tuned */ + if (npages >= 512) /* 2MB of space: arbitrary, should be tuned */ flush_tlb_all(); else { mtsp(vma->vm_mm->context,1); + purge_tlb_start(); if (split_tlb) { - purge_tlb_start(); while (npages--) { pdtlb(start); pitlb(start); start += PAGE_SIZE; } - purge_tlb_end(); } else { - purge_tlb_start(); while (npages--) { pdtlb(start); start += PAGE_SIZE; } - purge_tlb_end(); } + purge_tlb_end(); } } |