1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Support for Intel Camera Imaging ISP subsystem.
4  * Copyright (c) 2015, Intel Corporation.
5  */
6 
7 #include "ia_css_mmu.h"
8 #include "ia_css_mmu_private.h"
9 #include <ia_css_debug.h>
10 #include "sh_css_sp.h"
11 #include "sh_css_firmware.h"
12 #include "sp.h"
13 #include "mmu_device.h"
14 
15 void
ia_css_mmu_invalidate_cache(void)16 ia_css_mmu_invalidate_cache(void)
17 {
18 	const struct ia_css_fw_info *fw = &sh_css_sp_fw;
19 	unsigned int HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb;
20 
21 	ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE,
22 			    "ia_css_mmu_invalidate_cache() enter\n");
23 
24 	/* if the SP is not running we should not access its dmem */
25 	if (sh_css_sp_is_running()) {
26 		HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb = fw->info.sp.invalidate_tlb;
27 
28 		(void)HIVE_ADDR_ia_css_dmaproxy_sp_invalidate_tlb; /* Suppres warnings in CRUN */
29 
30 		sp_dmem_store_uint32(SP0_ID,
31 				     (unsigned int)sp_address_of(ia_css_dmaproxy_sp_invalidate_tlb),
32 				     true);
33 	}
34 	ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE,
35 			    "ia_css_mmu_invalidate_cache() leave\n");
36 }
37 
38 void
sh_css_mmu_set_page_table_base_index(hrt_data base_index)39 sh_css_mmu_set_page_table_base_index(hrt_data base_index)
40 {
41 	int i;
42 
43 	IA_CSS_ENTER_PRIVATE("base_index=0x%08x\n", base_index);
44 	for (i = 0; i < N_MMU_ID; i++) {
45 		mmu_ID_t mmu_id = i;
46 
47 		mmu_set_page_table_base_index(mmu_id, base_index);
48 		mmu_invalidate_cache(mmu_id);
49 	}
50 	IA_CSS_LEAVE_PRIVATE("");
51 }
52