OpenE2K/qemu-e2k
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qemu-e2k/hw/gpio
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Peter Delevoryas 1f30db922c hw/gpio/aspeed: Don't let guests modify input pins 
Up until now, guests could modify input pins by overwriting the data
value register. The guest OS should only be allowed to modify output pin
values, and the QOM property setter should only be permitted to modify
input pins.

This change also updates the gpio input pin test to match this
expectation.

Andrew suggested this particularly refactoring here:

    https://lore.kernel.org/qemu-devel/23523aa1-ba81-412b-92cc-8174faba3612@www.fastmail.com/

Suggested-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
Fixes: 4b7f956862 ("hw/gpio: Add basic Aspeed GPIO model for AST2400 and AST2500")
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220712023219.41065-3-peter@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-07-14 16:24:38 +02:00
..
aspeed_gpio.c hw/gpio/aspeed: Don't let guests modify input pins 2022-07-14 16:24:38 +02:00
bcm2835_gpio.c qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
gpio_key.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
gpio_pwr.c hw/gpio/gpio_pwr: use shutdown function for reboot 2021-07-02 11:48:36 +01:00
imx_gpio.c Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
Kconfig hw: gpio: implement gpio-pwr driver for qemu reset/poweroff 2021-01-29 10:47:28 +00:00
max7310.c Pull request trivial patches 20200919 2020-09-22 15:42:23 +01:00
meson.build Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00
mpc8xxx.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
npcm7xx_gpio.c hw/gpio: Add GPIO model for Nuvoton NPCM7xx 2020-10-27 11:10:32 +00:00
nrf51_gpio.c
omap_gpio.c exec/exec-all: Move 'qemu/log.h' include in units requiring it 2022-02-21 10:18:06 +01:00
pl061.c hw/gpio/pl061: Document a shortcoming in our implementation 2021-07-09 16:09:12 +01:00
sifive_gpio.c hw/riscv: Move sifive_gpio model to hw/gpio 2020-09-09 15:54:19 -07:00
trace-events hw/gpio Add GPIO read/write trace event. 2022-05-25 10:31:33 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
zaurus.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00