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6 Commits

Author SHA1 Message Date
Yin Fengwei
8787b65fde dm: fix the issue when guest tries to disable memory range access 
According to PCI spec 3.0 section 6.2.2 "Device Control", guest
could write the command register to control device response to
io/mem access.

The origial code register/unregister the memory range which is
not suitable because it can't handle the sequence:
  1. disble the device response to specific memory range
  2. reboot guest (DM will try to free the memory range which
     was freed in step 1 already)

Tracked-On: #1277
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
 2018-10-08 12:57:00 +08:00
Yonghua Huang
61cd6946d0 DM: Remove 'strictio' from UOS bootargs' options 
- UOS will boot fail if 'strictio' is enabled ('-e' option), in this
   case (with '-e'), device model will block all PIO accesses whose
   handlers were not registered, after that, device model program will
   exit, hence UOS boot fail.

   actually, such kind of accesses exist, e.g. UOS would program
   PIT registers (port address: 0x43) if hpet is disabled.

 - For debug, we can trap unexpected PIO access in 'default_inout()'

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
 2018-07-02 12:33:52 +08:00
Zide Chen
df4ab92e81 DM: cleanup for header inclusions 
used https://gitlab.com/esr/deheader to detect and remove unnecessary
header file inclusions

Signed-off-by: Zide Chen <zide.chen@intel.com>
 2018-06-07 14:35:30 +08:00
Yonghua Huang
fc93c649d5 DM: validate port range explicitly in inout.c 
- check the port address range explicitly
  to avoid buffer overflow.

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
 2018-05-25 09:46:15 +08:00
Yonghua Huang
9e61accbed DM: add spanning devices check for i/o access 
- i/o access whose handler is not registered should
  not be allowed.

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
 2018-05-18 15:01:35 +08:00
Anthony Xu
bd31b1c53e initial import 
internal commit: 0ab1ea615e5cfbb0687a9d593a86a7b774386076

Signed-off-by: Anthony Xu <anthony.xu@intel.com>
 2018-05-11 14:44:28 +08:00