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From 0d16c11a3df3e09cb8ba20883174f600ac3611b5 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Date: Wed, 24 Jun 2009 14:55:54 +0300
Subject: [PATCH 125/146] DSS2: VRAM: Add function to get free vram info
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
---
arch/arm/plat-omap/include/mach/vram.h | 2 +
arch/arm/plat-omap/vram.c | 38 ++++++++++++++++++++++++++++++++
2 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/include/mach/vram.h b/arch/arm/plat-omap/include/mach/vram.h
index 8639e08..494ddde 100644
--- a/arch/arm/plat-omap/include/mach/vram.h
+++ b/arch/arm/plat-omap/include/mach/vram.h
@@ -28,6 +28,8 @@ extern int omap_vram_add_region(unsigned long paddr, size_t size);
extern int omap_vram_free(unsigned long paddr, size_t size);
extern int omap_vram_alloc(int mtype, size_t size, unsigned long *paddr);
extern int omap_vram_reserve(unsigned long paddr, size_t size);
+extern void omap_vram_get_info(unsigned long *vram, unsigned long *free_vram,
+ unsigned long *largest_free_block);
extern void omap2_set_sdram_vram(u32 size, u32 start);
extern void omap2_set_sram_vram(u32 size, u32 start);
diff --git a/arch/arm/plat-omap/vram.c b/arch/arm/plat-omap/vram.c
index f3ce849..d4a8110 100644
--- a/arch/arm/plat-omap/vram.c
+++ b/arch/arm/plat-omap/vram.c
@@ -398,6 +398,44 @@ int omap_vram_alloc(int mtype, size_t size, unsigned long *paddr)
}
EXPORT_SYMBOL(omap_vram_alloc);
+void omap_vram_get_info(unsigned long *vram,
+ unsigned long *free_vram,
+ unsigned long *largest_free_block)
+{
+ struct vram_region *vr;
+ struct vram_alloc *va;
+
+ *vram = 0;
+ *free_vram = 0;
+ *largest_free_block = 0;
+
+ mutex_lock(®ion_mutex);
+
+ list_for_each_entry(vr, ®ion_list, list) {
+ unsigned free;
+ unsigned long pa;
+
+ pa = vr->paddr;
+ *vram += vr->pages << PAGE_SHIFT;
+
+ list_for_each_entry(va, &vr->alloc_list, list) {
+ free = va->paddr - pa;
+ *free_vram += free;
+ if (free > *largest_free_block)
+ *largest_free_block = free;
+ pa = va->paddr + (va->pages << PAGE_SHIFT);
+ }
+
+ free = vr->paddr + (vr->pages << PAGE_SHIFT) - pa;
+ *free_vram += free;
+ if (free > *largest_free_block)
+ *largest_free_block = free;
+ }
+
+ mutex_unlock(®ion_mutex);
+}
+EXPORT_SYMBOL(omap_vram_get_info);
+
#if defined(CONFIG_DEBUG_FS)
static int vram_debug_show(struct seq_file *s, void *unused)
{
--
1.6.2.4
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