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1f30db922c
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>
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
/*
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* QTest testcase for the Aspeed GPIO Controller.
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*
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* Copyright (c) Meta Platforms, Inc. and affiliates. (http://www.meta.com)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/bitops.h"
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#include "qemu/timer.h"
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#include "qapi/qmp/qdict.h"
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#include "libqtest-single.h"
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#define AST2600_GPIO_BASE 0x1E780000
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#define GPIO_ABCD_DATA_VALUE 0x000
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#define GPIO_ABCD_DIRECTION 0x004
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static void test_set_colocated_pins(const void *data)
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{
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QTestState *s = (QTestState *)data;
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/*
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* gpioV4-7 occupy bits within a single 32-bit value, so we want to make
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* sure that modifying one doesn't affect the other.
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*/
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qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV4", true);
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qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV5", false);
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qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV6", true);
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qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV7", false);
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g_assert(qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV4"));
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g_assert(!qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV5"));
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g_assert(qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV6"));
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g_assert(!qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV7"));
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}
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static void test_set_input_pins(const void *data)
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{
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QTestState *s = (QTestState *)data;
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char name[16];
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uint32_t value;
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qtest_writel(s, AST2600_GPIO_BASE + GPIO_ABCD_DIRECTION, 0x00000000);
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for (char c = 'A'; c <= 'D'; c++) {
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for (int i = 0; i < 8; i++) {
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sprintf(name, "gpio%c%d", c, i);
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qtest_qom_set_bool(s, "/machine/soc/gpio", name, true);
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}
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}
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value = qtest_readl(s, AST2600_GPIO_BASE + GPIO_ABCD_DATA_VALUE);
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g_assert_cmphex(value, ==, 0xffffffff);
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qtest_writel(s, AST2600_GPIO_BASE + GPIO_ABCD_DATA_VALUE, 0x00000000);
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value = qtest_readl(s, AST2600_GPIO_BASE + GPIO_ABCD_DATA_VALUE);
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g_assert_cmphex(value, ==, 0xffffffff);
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}
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int main(int argc, char **argv)
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{
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QTestState *s;
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int r;
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g_test_init(&argc, &argv, NULL);
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s = qtest_init("-machine ast2600-evb");
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qtest_add_data_func("/ast2600/gpio/set_colocated_pins", s,
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test_set_colocated_pins);
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qtest_add_data_func("/ast2600/gpio/set_input_pins", s, test_set_input_pins);
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r = g_test_run();
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qtest_quit(s);
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return r;
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}
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