sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

custom message type for vm_map_phys

Browse source
This commit is contained in:
Ben Gras 2014-07-26 13:53:58 +02:00 committed by Lionel Sambuc
parent 8c2ac80abd
commit 6af75e6660
4 changed files with 18 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
include/minix/com.h
View file

@ -700,10 +700,6 @@
# define VMGD_SIZEP m2_l2
#define VM_MAP_PHYS (VM_RQ_BASE+15)
# define VMMP_EP m1_i1
# define VMMP_PHADDR m1_p2
# define VMMP_LEN m1_i2
# define VMMP_VADDR_REPLY m1_p3
#define VM_UNMAP_PHYS (VM_RQ_BASE+16)
# define VMUP_EP m1_i1

10
include/minix/ipc.h
View file

@ -1847,6 +1847,15 @@ typedef struct {
} mess_lc_ipc_semop;
_ASSERT_MSG_SIZE(mess_lc_ipc_semop);
typedef struct {
endpoint_t ep;
phys_bytes phaddr;
size_t len;
void *reply;
uint8_t padding[40];
} mess_lsys_vm_map_phys;
_ASSERT_MSG_SIZE(mess_lsys_vm_map_phys);
typedef struct {
endpoint_t m_source; /* who sent the message */
int m_type; /* what kind of message is it */
@ -2083,6 +2092,7 @@ typedef struct {
mess_lc_ipc_semctl m_lc_ipc_semctl;
mess_lc_ipc_semop m_lc_ipc_semop;
mess_lc_vm_brk m_lc_vm_brk;
mess_lsys_vm_map_phys m_lsys_vm_map_phys;
mess_vfs_lchardriver_cancel m_vfs_lchardriver_cancel;
mess_vfs_lchardriver_openclose m_vfs_lchardriver_openclose;

8
lib/libsys/vm_map_phys.c
View file

@ -12,15 +12,15 @@ vm_map_phys(endpoint_t who, void *phaddr, size_t len)
int r;
memset(&m, 0, sizeof(m));
m.VMMP_EP = who;
m.VMMP_PHADDR = phaddr;
m.VMMP_LEN = len;
m.m_lsys_vm_map_phys.ep = who;
m.m_lsys_vm_map_phys.phaddr = phaddr;
m.m_lsys_vm_map_phys.len = len;
r = _taskcall(VM_PROC_NR, VM_MAP_PHYS, &m);
if (r != OK) return MAP_FAILED;
return (void *) m.VMMP_VADDR_REPLY;
return m.m_lsys_vm_map_phys.reply;
}
int

8
servers/vm/mmap.c
View file

@ -320,8 +320,8 @@ int do_map_phys(message *m)
phys_bytes startaddr;
size_t offset;
target = m->VMMP_EP;
len = m->VMMP_LEN;
target = m->m_lsys_vm_map_phys.ep;
len = m->m_lsys_vm_map_phys.len;
if (len <= 0) return EINVAL;
@ -331,7 +331,7 @@ int do_map_phys(message *m)
if((r=vm_isokendpt(target, &n)) != OK)
return EINVAL;
startaddr = (vir_bytes)m->VMMP_PHADDR;
startaddr = (vir_bytes)m->m_lsys_vm_map_phys.phaddr;
/* First check permission, then round range down/up. Caller can't
* help it if we can't map in lower than page granularity.
@ -358,7 +358,7 @@ int do_map_phys(message *m)
phys_setphys(vr, startaddr);
m->VMMP_VADDR_REPLY = (void *) (vr->vaddr + offset);
m->m_lsys_vm_map_phys.reply = (void *) (vr->vaddr + offset);
return OK;
}