minix/lib/syslib/pci_del_acl.c
Cristiano Giuffrida c5b309ff07 Merge of Wu's GSOC 09 branch (src.20090525.r4372.wu)
Main changes:
- COW optimization for safecopy.
- safemap, a grant-based interface for sharing memory regions between processes.
- Integration with safemap and complete rework of DS, supporting new data types
  natively (labels, memory ranges, memory mapped ranges).
- For further information:
  http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants

Additional changes not included in the original Wu's branch:
- Fixed unhandled case in VM when using COW optimization for safecopy in case
  of a block that has already been shared as SMAP.
- Better interface and naming scheme for sys_saferevmap and ds_retrieve_map
  calls.
- Better input checking in syslib: check for page alignment when creating
  memory mapping grants.
- DS notifies subscribers when an entry is deleted.
- Documented the behavior of indirect grants in case of memory mapping.
- Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked
  and extended.
- Minor fixes and general cleanup.
- TO-DO: Grant ids should be generated and managed the way endpoints are to make
sure grant slots are never misreused.
2010-01-14 15:24:16 +00:00

44 lines
805 B
C

/*
pci_del_acl.c
*/
#include "pci.h"
#include "syslib.h"
#include <unistd.h>
#include <minix/rs.h>
#include <minix/ds.h>
#include <minix/sysutil.h>
/*===========================================================================*
* pci_del_acl *
*===========================================================================*/
PUBLIC int pci_del_acl(proc_ep)
endpoint_t proc_ep;
{
int r;
message m;
u32_t u32;
if (pci_procnr == ANY)
{
r= ds_retrieve_label_num("pci", &u32);
if (r != 0)
{
panic("syslib/" __FILE__,
"pci_del_acl: _pm_findproc failed for 'pci'",
r);
}
pci_procnr = u32;
}
m.m_type= BUSC_PCI_DEL_ACL;
m.m1_i1= proc_ep;
r= sendrec(pci_procnr, &m);
if (r != 0)
panic("syslib/" __FILE__, "pci_del_acl: can't talk to PCI", r);
return m.m_type;
}