qemu/hw/nvram
Gabriel L. Somlo 38bf20931a fw_cfg: add generic non-DMA read method
Introduce fw_cfg_data_read(), a generic read method which works
on all access widths (1 through 8 bytes, inclusive), and can be
used during both IOPort and MMIO read accesses.

To maintain legibility, only fw_cfg_data_mem_read() (the MMIO
data read method) is replaced by this patch. The new method
essentially unwinds the fw_cfg_data_mem_read() + fw_cfg_read()
combo, but without unnecessarily repeating all the validity
checks performed by the latter on each byte being read.

This patch also modifies the trace_fw_cfg_read prototype to
accept a 64-bit value argument, allowing it to work properly
with the new read method, but also remain backward compatible
with existing call sites.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc Marí <markmb@redhat.com>
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1446733972-1602-6-git-send-email-somlo@cmu.edu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-12-15 11:45:59 +01:00
..
ds1225y.c savevm: Remove all the unneeded version_minimum_id_old (rest) 2014-05-14 15:24:51 +02:00
eeprom93xx.c savevm: Remove all the unneeded version_minimum_id_old (x86) 2014-06-16 04:55:26 +02:00
fw_cfg.c fw_cfg: add generic non-DMA read method 2015-12-15 11:45:59 +01:00
mac_nvram.c macio-nvram: add to misc category 2015-10-23 12:35:18 +11:00
Makefile.objs hw: move NVRAM interfaces to hw/nvram/, configure with default-configs/ 2013-04-08 18:13:16 +02:00
spapr_nvram.c spapr: Merge sPAPREnvironment into sPAPRMachineState 2015-07-07 17:44:50 +02:00