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Diffstat (limited to 'common/dmem.c')
-rw-r--r--common/dmem.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/common/dmem.c b/common/dmem.c
index 48bcefd..226b3f9 100644
--- a/common/dmem.c
+++ b/common/dmem.c
@@ -1,7 +1,7 @@
#include <apos/dmem.h>
-static struct mem_region_root pre_ram = {0};
-static struct mem_region_root post_ram = {0};
+static struct mem_region_root pre_ram = { 0 };
+static struct mem_region_root post_ram = { 0 };
pm_t __pre_base = 0;
pm_t __pre_top = 0;
pm_t __post_base = 0;
@@ -26,20 +26,23 @@ stat_t init_devmem(pm_t ram_base, pm_t ram_top)
return OK;
}
-stat_t dev_alloc_wrapper(struct vm_branch *b, pm_t *offset, vm_t vaddr, vmflags_t flags, enum mm_order order)
+stat_t dev_alloc_wrapper(struct vm_branch *b, pm_t *offset, vm_t vaddr,
+ vmflags_t flags, enum mm_order order)
{
map_vpage(b, *offset, vaddr, flags, order);
*offset += __o_size(order);
return OK;
}
-stat_t dev_free_wrapper(struct vm_branch *b, pm_t *offset, vm_t vaddr, vmflags_t flags, enum mm_order order)
+stat_t dev_free_wrapper(struct vm_branch *b, pm_t *offset, vm_t vaddr,
+ vmflags_t flags, enum mm_order order)
{
- UNUSED(offset); UNUSED(flags);
+ UNUSED(offset);
+ UNUSED(flags);
pm_t paddr = 0;
enum mm_order v_order = 0;
stat_vpage(b, vaddr, &paddr, &v_order, 0);
- if(order != v_order)
+ if (order != v_order)
return REGION_TRY_AGAIN;
unmap_vpage(b, vaddr);
@@ -49,16 +52,17 @@ stat_t dev_free_wrapper(struct vm_branch *b, pm_t *offset, vm_t vaddr, vmflags_t
vm_t alloc_devmem(struct tcb *t, pm_t dev_start, size_t bytes, vmflags_t flags)
{
vm_t region = 0;
- if(dev_start < __pre_top)
+ if (dev_start < __pre_top)
region = alloc_region(&pre_ram, bytes, 0);
- if(dev_start > __post_base)
+ if (dev_start > __post_base)
region = alloc_region(&post_ram, bytes, 0);
- if(!region)
+ if (!region)
return 0;
- return map_fill_region(t->b_r, &dev_alloc_wrapper, dev_start, region, bytes, flags);
+ return map_fill_region(t->b_r, &dev_alloc_wrapper, dev_start, region,
+ bytes, flags);
}
stat_t free_devmem(struct tcb *t, vm_t dev_start)
@@ -66,26 +70,27 @@ stat_t free_devmem(struct tcb *t, vm_t dev_start)
pm_t dev_paddr = 0;
stat_vpage(t->b_r, dev_start, &dev_paddr, 0, 0);
- if(dev_paddr >= __pre_top && dev_paddr <= __post_base)
+ if (dev_paddr >= __pre_top && dev_paddr <= __post_base)
return ERR_ADDR;
struct mem_region *m = 0;
- if(dev_paddr < __pre_top)
+ if (dev_paddr < __pre_top)
m = find_used_region(&pre_ram, dev_paddr);
- if(dev_paddr > __post_base)
+ if (dev_paddr > __post_base)
m = find_used_region(&post_ram, dev_paddr);
- if(!m)
+ if (!m)
return ERR_NF;
size_t region_size = __addr(m->end - m->start);
- map_fill_region(t->b_r, &dev_free_wrapper, dev_paddr, dev_start, region_size, 0);
+ map_fill_region(t->b_r, &dev_free_wrapper, dev_paddr, dev_start,
+ region_size, 0);
- if(dev_paddr < __pre_top)
+ if (dev_paddr < __pre_top)
free_region(&pre_ram, dev_paddr);
- if(dev_paddr > __post_base)
+ if (dev_paddr > __post_base)
free_region(&post_ram, dev_paddr);
return OK;