[Qemu-devel] [PATCH] e1000 fix: read access to some registers is missing.

[Kay Ackermann <kay.ackermann@uni-ulm.de>]

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While writing working on an e1000 driver for my university's OS I
noticed that some registers aren't readable in QEMU, but they should
be readable as stated in Intels Driver Developer Manual (and also
verified on real hardware).


diff --git a/hw/e1000.c b/hw/e1000.c
index 028afd1..3987e70 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -789,6 +789,8 @@ static uint32_t (*macreg_readops[])(E1000State *, int) = {
     getreg(MANC),	getreg(MDIC),	getreg(SWSM),	getreg(STATUS),
     getreg(TORL),	getreg(TOTL),	getreg(IMS),	getreg(TCTL),
     getreg(RDH),	getreg(RDT),	getreg(VET),	getreg(ICS),
+    getreg(TDBAL),	getreg(TDBAH),	getreg(RDBAH),	getreg(RDBAL),
+    getreg(TDLEN),	getreg(RDLEN),
 
     [TOTH] = mac_read_clr8,	[TORH] = mac_read_clr8,	[GPRC] = mac_read_clr4,
     [GPTC] = mac_read_clr4,	[TPR] = mac_read_clr4,	[TPT] = mac_read_clr4,



Oh and is there any specific reason why Jumbo-Frames are limited to 4k instead of i.e. Alteon 9014 bytes?

Regards,
Kay Ackermann

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