qemu-e2k/hw/net
Peter Maydell b187e20f9b hw/net/pcnet-pci: Unify pcnet_ioport_read/write and pcnet_mmio_read/write
The only difference between our implementation of the pcnet ioport
accessors and the mmio accessors is that the former check BCR_DWIO to
see what access widths are permitted for addresses in the aprom range
(0x0..0xf). In fact our failure to do this in the mmio accessors
is a bug (one which was fixed for the ioport accessors in
commit 7ba7974197 in 2011).

The data sheet for the Am79C970A does not describe the DWIO
bit as only applying for I/O space mapped I/O resources and
not memory mapped I/O resources, and our MMIO accessors already
honour DWIO for accesses in the 0x10..0x1f range (since the
pcnet_ioport_{read,write}{w,l} functions check it).

The data sheet for the later but compatible Am79C976 is clearer:
it states specifically "DWIO mode applies to both I/O- and
memory-mapped acceses." This seems to be reasonable evidence
in favour of interpretating the Am79C970A spec as being the same.

(NB: Linux's pcnet driver only supports I/O accesses, so the
MMIO access part of this device is probably untested anyway.)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-09-25 15:13:24 +01:00
..
can
fsl_etsec etsec: fix IRQ (un)masking 2018-07-16 11:18:09 +10:00
rocker
allwinner_emac.c
cadence_gem.c
dp8393x.c
e1000_regs.h
e1000.c
e1000e_core.c e1000e: Prevent MSI/MSI-X storms 2018-07-20 08:30:48 +08:00
e1000e_core.h e1000e: Prevent MSI/MSI-X storms 2018-07-20 08:30:48 +08:00
e1000e.c
e1000x_common.c
e1000x_common.h
eepro100.c
etraxfs_eth.c
ftgmac100.c
imx_fec.c
lan9118.c
lance.c
Makefile.objs
mcf_fec.c
milkymist-minimac2.c
mipsnet.c
ne2000-isa.c
ne2000.c
ne2000.h
net_rx_pkt.c
net_rx_pkt.h
net_tx_pkt.c
net_tx_pkt.h
opencores_eth.c
pcnet-pci.c hw/net/pcnet-pci: Unify pcnet_ioport_read/write and pcnet_mmio_read/write 2018-09-25 15:13:24 +01:00
pcnet.c
pcnet.h
rtl8139.c
smc91c111.c
spapr_llan.c
stellaris_enet.c
sungem.c
sunhme.c
trace-events hw/net/pcnet-pci: Unify pcnet_ioport_read/write and pcnet_mmio_read/write 2018-09-25 15:13:24 +01:00
vhost_net.c
virtio-net.c qapi: Drop qapi_event_send_FOO()'s Error ** argument 2018-08-28 18:21:38 +02:00
vmware_utils.h
vmxnet3.c
vmxnet3.h
vmxnet_debug.h
xen_nic.c
xgmac.c
xilinx_axienet.c
xilinx_ethlite.c