Commit 0bfa130e authored by Chris Dearman's avatar Chris Dearman Committed by Ralf Baechle
Browse files

[MIPS] Remove TLB sanitation code 



It is not being used by Malta and shouldn't be needed for MIPSsim.
    
Signed-off-by: default avatarChris Dearman <chris@mips.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 0b6d497f

arch/mips/kernel/smp-mt.c

+0 −47
Original line number Diff line number Diff line
@@ -58,53 +58,6 @@ static void dump_mtregisters(int vpe, int tc) 
}

#endif



void __init sanitize_tlb_entries(void)

{

	int i, tlbsiz;

	unsigned long mvpconf0, ncpu;



	if (!cpu_has_mipsmt)

		return;



	/* Enable VPC */

	set_c0_mvpcontrol(MVPCONTROL_VPC);



	back_to_back_c0_hazard();



	/* Disable TLB sharing */

	clear_c0_mvpcontrol(MVPCONTROL_STLB);



	mvpconf0 = read_c0_mvpconf0();



	printk(KERN_INFO "MVPConf0 0x%lx TLBS %lx PTLBE %ld\n", mvpconf0,

		   (mvpconf0 & MVPCONF0_TLBS) >> MVPCONF0_TLBS_SHIFT,

			   (mvpconf0 & MVPCONF0_PTLBE) >> MVPCONF0_PTLBE_SHIFT);



	tlbsiz = (mvpconf0 & MVPCONF0_PTLBE) >> MVPCONF0_PTLBE_SHIFT;

	ncpu = ((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;



	printk(" tlbsiz %d ncpu %ld\n", tlbsiz, ncpu);



	if (tlbsiz > 0) {

		/* share them out across the vpe's */

		tlbsiz /= ncpu;



		printk(KERN_INFO "setting Config1.MMU_size to %d\n", tlbsiz);



		for (i = 0; i < ncpu; i++) {

			settc(i);



			if (i == 0)

				write_c0_config1((read_c0_config1() & ~(0x3f << 25)) | (tlbsiz << 25));

			else

				write_vpe_c0_config1((read_vpe_c0_config1() & ~(0x3f << 25)) |

						   (tlbsiz << 25));

		}

	}



	clear_c0_mvpcontrol(MVPCONTROL_VPC);

}



static void ipi_resched_dispatch(void)

{

	do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ);

arch/mips/kernel/smtc.c

+0 −8
Original line number Diff line number Diff line
@@ -174,14 +174,6 @@ static int clock_hang_reported[NR_CPUS]; 


#endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */



/* Initialize shared TLB - the should probably migrate to smtc_setup_cpus() */



void __init sanitize_tlb_entries(void)

{

	printk("Deprecated sanitize_tlb_entries() invoked\n");

}





/*

 * Configure shared TLB - VPC configuration bit must be set by caller

 */

arch/mips/mipssim/sim_setup.c

+0 −6
Original line number Diff line number Diff line
@@ -39,9 +39,6 @@ 
static void __init serial_init(void);

unsigned int _isbonito = 0;



extern void __init sanitize_tlb_entries(void);





const char *get_system_type(void)

{

	return "MIPSsim";
@@ -55,9 +52,6 @@ void __init plat_mem_setup(void) 


	pr_info("Linux started...\n");



#ifdef CONFIG_MIPS_MT_SMP

	sanitize_tlb_entries();

#endif

}



extern struct plat_smp_ops ssmtc_smp_ops;