From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH v2 17/28] ARM: mmu: Define and use PTRS_PER_PTE
Date: Wed, 16 May 2018 13:00:25 -0700 [thread overview]
Message-ID: <20180516200036.29829-18-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20180516200036.29829-1-andrew.smirnov@gmail.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
arch/arm/cpu/mmu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index b4cc474d8..d70516f9c 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -34,6 +34,7 @@
#include "mmu.h"
#define PMD_SECT_DEF_CACHED (PMD_SECT_WB | PMD_SECT_DEF_UNCACHED)
+#define PTRS_PER_PTE (PGDIR_SIZE / PAGE_SIZE)
static uint32_t *ttb;
@@ -91,14 +92,15 @@ static u32 *arm_create_pte(unsigned long virt)
u32 *table;
int i;
- table = memalign(0x400, 0x400);
+ table = memalign(PTRS_PER_PTE * sizeof(u32),
+ PTRS_PER_PTE * sizeof(u32));
if (!ttb)
arm_mmu_not_initialized_error();
ttb[pgd_index(virt)] = (unsigned long)table | PMD_TYPE_TABLE;
- for (i = 0; i < 256; i++) {
+ for (i = 0; i < PTRS_PER_PTE; i++) {
table[i] = virt | PTE_TYPE_SMALL | pte_flags_uncached;
virt += PAGE_SIZE;
}
@@ -242,7 +244,7 @@ static int arm_mmu_remap_sdram(struct memory_bank *bank)
for (i = ttb_start; i < ttb_end; i++) {
ttb[i] = (unsigned long)(&ptes[pte]) | PMD_TYPE_TABLE |
(0 << 4);
- pte += 256;
+ pte += PTRS_PER_PTE;
}
dma_flush_range((unsigned long)ttb, (unsigned long)ttb + 0x4000);
--
2.17.0
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next prev parent reply other threads:[~2018-05-16 20:01 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-16 20:00 [PATCH v2 00/28] ARM MMU code improvements and on-demand PTE allocation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 01/28] ARM: mmu: Remove unused ARM_VECTORS_SIZE Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 02/28] ARM: mmu: Make use of IS_ALIGNED in arm_mmu_remap_sdram() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 03/28] ARM: mmu: Use ALIGN and ALIGN_DOWN in map_cachable() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 04/28] ARM: mmu: Introduce set_ttbr() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 05/28] ARM: mmu: Introduce set_domain() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 06/28] ARM: mmu: Share code for create_sections() Andrey Smirnov
2018-05-16 20:49 ` Sam Ravnborg
2018-05-17 0:10 ` Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 07/28] ARM: mmu: Separate index and address in create_sections() Andrey Smirnov
2018-05-16 20:52 ` Sam Ravnborg
2018-05-17 0:11 ` Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 08/28] sizes.h: Sync with Linux 4.16 Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 09/28] ARM: mmu: Specify size in bytes in create_sections() Andrey Smirnov
2018-05-17 6:55 ` Sascha Hauer
2018-05-17 7:01 ` Andrey Smirnov
2018-05-17 7:08 ` Sascha Hauer
2018-05-17 7:35 ` Andrey Smirnov
2018-05-17 9:24 ` Sascha Hauer
2018-05-16 20:00 ` [PATCH v2 10/28] ARM: mmu: Share code for initial flat mapping creation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 11/28] ARM: mmu: Share PMD_SECT_DEF_CACHED Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 12/28] ARM: mmu: Drop needless shifting in map_io_sections() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 13/28] ARM: mmu: Replace hardcoded shifts with pgd_index() from Linux Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 14/28] ARM: mmu: Trivial simplification in arm_mmu_remap_sdram() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 15/28] ARM: mmu: Replace various SZ_1M with PGDIR_SIZE Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 16/28] ARM: mmu: Use PAGE_SIZE when specifying size of one page Andrey Smirnov
2018-05-16 20:00 ` Andrey Smirnov [this message]
2018-05-16 20:00 ` [PATCH v2 18/28] ARM: mmu: Use PAGE_SIZE instead of magic right shift by 12 Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 19/28] ARM: mmu: Use xmemalign in arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 20/28] ARM: mmu: Use xmemalign in mmu_init() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 21/28] ARM: mmu: Share code between dma_alloc_*() functions Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 22/28] ARM: mmu: Pass PTE flags a parameter to arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 23/28] ARM: mmu: Make sure that address is 1M aligned in arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 24/28] ARM: mmu: Use find_pte() to find PTE in create_vector_table() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 25/28] ARM: mmu: Use dma_inv_range() in dma_sync_single_for_cpu() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 26/28] ARM: mmu: Simplify the use of dma_flush_range() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 27/28] ARM: mmu: Implement on-demand PTE allocation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 28/28] ARM: mmu: Introduce ARM_TTB_SIZE Andrey Smirnov
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