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- /* Assembler variants of srmmu access functions.
- * Implemented in assembler to allow run-time patching.
- * LEON uses a different ASI for MMUREGS than SUN.
- *
- * The leon_1insn_patch infrastructure is used
- * for the run-time patching.
- */
- #include <linux/linkage.h>
- #include <asm/asmmacro.h>
- #include <asm/pgtsrmmu.h>
- #include <asm/asi.h>
- /* unsigned int srmmu_get_mmureg(void) */
- ENTRY(srmmu_get_mmureg)
- LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0)
- SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0)
- retl
- nop
- ENDPROC(srmmu_get_mmureg)
- /* void srmmu_set_mmureg(unsigned long regval) */
- ENTRY(srmmu_set_mmureg)
- LEON_PI(sta %o0, [%g0] ASI_LEON_MMUREGS)
- SUN_PI_(sta %o0, [%g0] ASI_M_MMUREGS)
- retl
- nop
- ENDPROC(srmmu_set_mmureg)
- /* void srmmu_set_ctable_ptr(unsigned long paddr) */
- ENTRY(srmmu_set_ctable_ptr)
- /* paddr = ((paddr >> 4) & SRMMU_CTX_PMASK); */
- srl %o0, 4, %g1
- and %g1, SRMMU_CTX_PMASK, %g1
- mov SRMMU_CTXTBL_PTR, %g2
- LEON_PI(sta %g1, [%g2] ASI_LEON_MMUREGS)
- SUN_PI_(sta %g1, [%g2] ASI_M_MMUREGS)
- retl
- nop
- ENDPROC(srmmu_set_ctable_ptr)
- /* void srmmu_set_context(int context) */
- ENTRY(srmmu_set_context)
- mov SRMMU_CTX_REG, %g1
- LEON_PI(sta %o0, [%g1] ASI_LEON_MMUREGS)
- SUN_PI_(sta %o0, [%g1] ASI_M_MMUREGS)
- retl
- nop
- ENDPROC(srmmu_set_context)
- /* int srmmu_get_context(void) */
- ENTRY(srmmu_get_context)
- mov SRMMU_CTX_REG, %o0
- LEON_PI(lda [%o0] ASI_LEON_MMUREGS, %o0)
- SUN_PI_(lda [%o0] ASI_M_MMUREGS, %o0)
- retl
- nop
- ENDPROC(srmmu_get_context)
- /* unsigned int srmmu_get_fstatus(void) */
- ENTRY(srmmu_get_fstatus)
- mov SRMMU_FAULT_STATUS, %o0
- LEON_PI(lda [%o0] ASI_LEON_MMUREGS, %o0)
- SUN_PI_(lda [%o0] ASI_M_MMUREGS, %o0)
- retl
- nop
- ENDPROC(srmmu_get_fstatus)
- /* unsigned int srmmu_get_faddr(void) */
- ENTRY(srmmu_get_faddr)
- mov SRMMU_FAULT_ADDR, %o0
- LEON_PI(lda [%o0] ASI_LEON_MMUREGS, %o0)
- SUN_PI_(lda [%o0] ASI_M_MMUREGS, %o0)
- retl
- nop
- ENDPROC(srmmu_get_faddr)
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