LXR linux/drivers/staging/media/atomisp/pci/sh_css

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Support for Intel Camera Imaging ISP subsystem.
   4 * Copyright (c) 2015, Intel Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 */
  15
  16#include "ia_css_mmu.h"
  17#include "ia_css_mmu_private.h"
  18#include <ia_css_debug.h>
  19#include "sh_css_sp.h"
  20#include "sh_css_firmware.h"
  21#include "sp.h"
  22#include "mmu_device.h"
  23
  24void
  25ia_css_mmu_invalidate_cache(void)
  26{
  27        const struct ia_css_fw_info *fw = &sh_css_sp_fw;
  28        unsigned int HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb;
  29
  30        ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE,
  31                            "ia_css_mmu_invalidate_cache() enter\n");
  32
  33        /* if the SP is not running we should not access its dmem */
  34        if (sh_css_sp_is_running()) {
  35                HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb = fw->info.sp.invalidate_tlb;
  36
  37                (void)HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb; /* Suppres warnings in CRUN */
  38
  39                sp_dmem_store_uint32(SP0_ID,
  40                                     (unsigned int)sp_address_of(ia_css_dmaproxy_sp_invalidate_tlb),
  41                                     true);
  42        }
  43        ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE,
  44                            "ia_css_mmu_invalidate_cache() leave\n");
  45}
  46
  47void
  48sh_css_mmu_set_page_table_base_index(hrt_data base_index)
  49{
  50        int i;
  51
  52        IA_CSS_ENTER_PRIVATE("base_index=0x%08x\n", base_index);
  53        for (i = 0; i < N_MMU_ID; i++) {
  54                mmu_ID_t mmu_id = i;
  55
  56                mmu_set_page_table_base_index(mmu_id, base_index);
  57                mmu_invalidate_cache(mmu_id);
  58        }
  59        IA_CSS_LEAVE_PRIVATE("");
  60}
  61