From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
j.neuschaefer@gmx.net
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 02/16] powerpc/mm/32: add base address to mmu_mapin_ram()
Date: Thu, 21 Feb 2019 08:04:50 +0000 (UTC) [thread overview]
Message-ID: <92b8581969a297bc37ebd2fd3103c26ad2576568.1550692943.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1550692943.git.christophe.leroy@c-s.fr>
At the time being, mmu_mapin_ram() always maps RAM from the beginning.
But some platforms like the WII have to map a second block of RAM.
This patch adds to mmu_mapin_ram() the base address of the block.
At the moment, only base address 0 is supported.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/mm/40x_mmu.c | 2 +-
arch/powerpc/mm/44x_mmu.c | 2 +-
arch/powerpc/mm/8xx_mmu.c | 2 +-
arch/powerpc/mm/fsl_booke_mmu.c | 2 +-
arch/powerpc/mm/mmu_decl.h | 2 +-
arch/powerpc/mm/pgtable_32.c | 6 +++---
arch/powerpc/mm/ppc_mmu_32.c | 2 +-
7 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 61ac468c87c6..b9cf6f8764b0 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -93,7 +93,7 @@ void __init MMU_init_hw(void)
#define LARGE_PAGE_SIZE_16M (1<<24)
#define LARGE_PAGE_SIZE_4M (1<<22)
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long v, s, mapped;
phys_addr_t p;
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index ea2b9af08a48..aad127acdbaa 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -170,7 +170,7 @@ void __init MMU_init_hw(void)
flush_instruction_cache();
}
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long addr;
unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1);
diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c
index bfa503cff351..92ae7f40ccb1 100644
--- a/arch/powerpc/mm/8xx_mmu.c
+++ b/arch/powerpc/mm/8xx_mmu.c
@@ -103,7 +103,7 @@ static void __init mmu_patch_cmp_limit(s32 *site, unsigned long mapped)
modify_instruction_site(site, 0xffff, (unsigned long)__va(mapped) >> 16);
}
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long mapped;
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index 080d49b26c3a..210cbc1faf63 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -221,7 +221,7 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, bool dryrun)
#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
#endif
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1;
}
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index c4a717da65eb..61730023dde3 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -130,7 +130,7 @@ extern void wii_memory_fixups(void);
*/
#ifdef CONFIG_PPC32
extern void MMU_init_hw(void);
-extern unsigned long mmu_mapin_ram(unsigned long top);
+unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
#endif
#ifdef CONFIG_PPC_FSL_BOOK3E
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index ded71126ce4c..b4858818523f 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -258,15 +258,15 @@ void __init mapin_ram(void)
#ifndef CONFIG_WII
top = total_lowmem;
- s = mmu_mapin_ram(top);
+ s = mmu_mapin_ram(0, top);
__mapin_ram_chunk(s, top);
#else
if (!wii_hole_size) {
- s = mmu_mapin_ram(total_lowmem);
+ s = mmu_mapin_ram(0, total_lowmem);
__mapin_ram_chunk(s, total_lowmem);
} else {
top = wii_hole_start;
- s = mmu_mapin_ram(top);
+ s = mmu_mapin_ram(0, top);
__mapin_ram_chunk(s, top);
top = memblock_end_of_DRAM();
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 3f4193201ee7..b260ced065b4 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -73,7 +73,7 @@ unsigned long p_block_mapped(phys_addr_t pa)
return 0;
}
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long tot, bl, done;
unsigned long max_size = (256<<20);
--
2.13.3
next prev parent reply other threads:[~2019-02-21 8:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-21 8:04 [PATCH v4 00/16] powerpc/32: Use BATs/LTLBs for STRICT_KERNEL_RWX Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 01/16] powerpc/wii: properly disable use of BATs when requested Christophe Leroy
2019-02-21 8:04 ` Christophe Leroy [this message]
2019-02-21 8:04 ` [PATCH v4 03/16] powerpc/mm/32s: rework mmu_mapin_ram() Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 04/16] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks Christophe Leroy
2019-02-21 13:51 ` Michael Ellerman
2019-02-21 14:38 ` Christophe Leroy
2019-02-21 19:02 ` Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 05/16] powerpc/32: always populate page tables for Abatron BDI Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 06/16] powerpc/wii: remove wii_mmu_mapin_mem2() Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 07/16] powerpc/mm/32s: use _PAGE_EXEC in setbat() Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 08/16] powerpc/32: add helper to write into segment registers Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 09/16] powerpc/mmu: add is_strict_kernel_rwx() helper Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 10/16] powerpc/kconfig: define PAGE_SHIFT inside Kconfig Christophe Leroy
2019-02-21 8:04 ` [PATCH v4 11/16] powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT Christophe Leroy
2019-02-21 8:05 ` [PATCH v4 12/16] powerpc/mm/32s: add setibat() clearibat() and update_bats() Christophe Leroy
2019-02-21 8:05 ` [PATCH v4 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2019-02-21 8:05 ` [PATCH v4 14/16] powerpc/kconfig: make _etext and data areas alignment configurable on Book3s 32 Christophe Leroy
2019-02-21 8:05 ` [PATCH v4 15/16] powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX Christophe Leroy
2019-02-21 8:05 ` [PATCH v4 16/16] powerpc/kconfig: make _etext and data areas alignment configurable on 8xx Christophe Leroy
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