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  1. 22 7月, 2010 1 次提交
    • I
      e1000: Fix wrong microwire EEPROM state initialization · 9651ac55
      由 Izumi Tsutsui 提交于 
      This change fixes initialization of e1000's microwire EEPROM internal
state values so that qemu's e1000 emulation works on NetBSD,
which doesn't use Intel's em driver but has its own wm driver
for the Intel i8254x Gigabit Ethernet.

Previously set_eecd() function in e1000.c clears EEPROM internal state
values on SK rising edge during CS==L, but according to FM93C06 EEPROM
(which is MicroWire compatible) data sheet, EEPROM internal status
should be cleared on CS rise edge regardless of SK input:
 "... a rising edge on this (CS) signal is required to reset the internal
  state-machine to accept a new cycle .."
and nothing should be changed during CS (chip select) is inactive.

Intel's em driver seems to explicitly raise SK output after CS is negated
in em_standby_eeprom() so many other OSes that use Intel's driver
don't have this problem even on the previous e1000.c implementation,
but I can't find any articles that say the MICROWIRE or EEPROM spec
requires such sequence, and actually hardware works fine without it
(i.e. real i82540EM has been working on NetBSD).

This fix also changes initialization to clear each state value in
struct eecd_state individually rather than using memset() against
the whole structre. The old_eecd member stores the last SK and CS
signal levels and it should be preserved even after reset of internal
EEPROM state to detect next signal edges for proper EEPROM emulation.
Signed-off-by: NIzumi Tsutsui <tsutsui@ceres.dti.ne.jp>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
      9651ac55
  3. 19 7月, 2010 2 次提交
  5. 14 6月, 2010 1 次提交
  7. 15 5月, 2010 1 次提交
  9. 09 4月, 2010 1 次提交
  11. 23 12月, 2009 2 次提交
  13. 19 12月, 2009 3 次提交
  15. 04 12月, 2009 2 次提交
  17. 03 12月, 2009 1 次提交
  19. 13 11月, 2009 1 次提交
  21. 09 11月, 2009 3 次提交
  23. 07 11月, 2009 1 次提交
    • G
      v3: don't call reset functions on cpu initialization · c1699988
      由 Glauber Costa 提交于 
      There is absolutely no need to call reset functions when initializing
devices. Since we are already registering them, calling qemu_system_reset()
should suffice. Actually, it is what happens when we reboot the machine,
and using the same process instead of a special case semantics will even
allow us to find bugs easier.

Furthermore, the fact that we initialize things like the cpu quite early,
leads to the need to introduce synchronization stuff like qemu_system_cond.
This patch removes it entirely. All we need to do is call qemu_system_reset()
only when we're already sure the system is up and running

I tested it with qemu (with and without io-thread) and qemu-kvm, and it
seems to be doing okay - although qemu-kvm uses a slightly different patch.

[ v2: user mode still needs cpu_reset, so put it in ifdef. ]
[ v3: leave qemu_system_cond for now. ]
Signed-off-by: NGlauber Costa <glommer@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      c1699988
  25. 30 10月, 2009 2 次提交
  27. 28 10月, 2009 4 次提交
  29. 05 10月, 2009 1 次提交
  31. 02 10月, 2009 2 次提交
  33. 28 8月, 2009 2 次提交
  35. 26 8月, 2009 1 次提交
  37. 30 7月, 2009 1 次提交
    • B
      e1000.c doesn't properly emulate EERD and ICS registers · b1332393
      由 Bill Paul 提交于 
      Once again, the emulation of the EERD and ICS registers in e1000.c is
incorrect. Nobody has noticed this before because none of the Intel-written
e1000 drivers use these registers, and all of the independently written open
source drivers copy Intel's example, so they don't use them either.
Regardless, these registers are documented in the programmer's manuals, and
their emulated behavior doesn't match the verified behavior of real hardware,
so any software that does use them doesn't function correctly.

-Bill
Signed-off-by: NBill Paul <wpaul@windriver.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      b1332393
  39. 17 7月, 2009 2 次提交
  41. 09 7月, 2009 1 次提交
  43. 30 6月, 2009 1 次提交
  45. 18 6月, 2009 1 次提交
  47. 17 6月, 2009 2 次提交
  49. 10 6月, 2009 1 次提交