cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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powerdomain-common.c (2985B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Common powerdomain framework functions
      4 *
      5 * Copyright (C) 2010-2011 Texas Instruments, Inc.
      6 * Copyright (C) 2010 Nokia Corporation
      7 *
      8 * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
      9 */
     10
     11#include <linux/errno.h>
     12#include <linux/kernel.h>
     13#include <linux/bug.h>
     14#include "pm.h"
     15#include "cm.h"
     16#include "cm-regbits-34xx.h"
     17#include "prm-regbits-34xx.h"
     18#include "prm-regbits-44xx.h"
     19
     20/*
     21 * OMAP3 and OMAP4 specific register bit initialisations
     22 * Notice that the names here are not according to each power
     23 * domain but the bit mapping used applies to all of them
     24 */
     25/* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
     26#define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
     27#define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
     28#define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
     29#define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
     30#define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
     31
     32/* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
     33#define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
     34#define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
     35#define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
     36#define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
     37#define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
     38
     39/* OMAP3 and OMAP4 Memory Status bits */
     40#define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
     41#define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
     42#define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
     43#define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
     44#define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
     45
     46/* Common Internal functions used across OMAP rev's*/
     47u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank)
     48{
     49	switch (bank) {
     50	case 0:
     51		return OMAP_MEM0_ONSTATE_MASK;
     52	case 1:
     53		return OMAP_MEM1_ONSTATE_MASK;
     54	case 2:
     55		return OMAP_MEM2_ONSTATE_MASK;
     56	case 3:
     57		return OMAP_MEM3_ONSTATE_MASK;
     58	case 4:
     59		return OMAP_MEM4_ONSTATE_MASK;
     60	default:
     61		WARN_ON(1); /* should never happen */
     62		return -EEXIST;
     63	}
     64	return 0;
     65}
     66
     67u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank)
     68{
     69	switch (bank) {
     70	case 0:
     71		return OMAP_MEM0_RETSTATE_MASK;
     72	case 1:
     73		return OMAP_MEM1_RETSTATE_MASK;
     74	case 2:
     75		return OMAP_MEM2_RETSTATE_MASK;
     76	case 3:
     77		return OMAP_MEM3_RETSTATE_MASK;
     78	case 4:
     79		return OMAP_MEM4_RETSTATE_MASK;
     80	default:
     81		WARN_ON(1); /* should never happen */
     82		return -EEXIST;
     83	}
     84	return 0;
     85}
     86
     87u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank)
     88{
     89	switch (bank) {
     90	case 0:
     91		return OMAP_MEM0_STATEST_MASK;
     92	case 1:
     93		return OMAP_MEM1_STATEST_MASK;
     94	case 2:
     95		return OMAP_MEM2_STATEST_MASK;
     96	case 3:
     97		return OMAP_MEM3_STATEST_MASK;
     98	case 4:
     99		return OMAP_MEM4_STATEST_MASK;
    100	default:
    101		WARN_ON(1); /* should never happen */
    102		return -EEXIST;
    103	}
    104	return 0;
    105}
    106