diff --git a/tests/Makefile b/tests/Makefile index b60f0fb..69eff45 100644 --- a/tests/Makefile +++ b/tests/Makefile @@ -28,6 +28,7 @@ check-qtest-i386-y += tests/rtc-test$(EXESUF) check-qtest-x86_64-y = $(check-qtest-i386-y) check-qtest-sparc-y = tests/m48t59-test$(EXESUF) check-qtest-sparc64-y = tests/m48t59-test$(EXESUF) +check-qtest-arm-y = tests/tmp105-test$(EXESUF) GENERATED_HEADERS += tests/test-qapi-types.h tests/test-qapi-visit.h tests/test-qmp-commands.h @@ -78,6 +79,7 @@ tests/rtc-test$(EXESUF): tests/rtc-test.o $(trace-obj-y) tests/m48t59-test$(EXESUF): tests/m48t59-test.o $(trace-obj-y) tests/fdc-test$(EXESUF): tests/fdc-test.o tests/libqtest.o $(trace-obj-y) tests/hd-geo-test$(EXESUF): tests/hd-geo-test.o tests/libqtest.o $(trace-obj-y) +tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(trace-obj-y) # QTest rules diff --git a/tests/tmp105-test.c b/tests/tmp105-test.c new file mode 100644 index 0000000..26d51f7 --- /dev/null +++ b/tests/tmp105-test.c @@ -0,0 +1,205 @@ +/* + * QTest testcase for the TMP105 temperature sensor + * + * Copyright (c) 2012 Andreas Färber + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "libqtest.h" + +#include +#include + +enum OMAPI2CRegisters { + OMAP_I2C_REV = 0x00, + OMAP_I2C_STAT = 0x08, + OMAP_I2C_CNT = 0x18, + OMAP_I2C_DATA = 0x1c, + OMAP_I2C_CON = 0x24, + OMAP_I2C_SA = 0x2c, +}; + +enum OMAPI2CSTATBits { + OMAP_I2C_STAT_NACK = 1 << 1, + OMAP_I2C_STAT_ARDY = 1 << 2, + OMAP_I2C_STAT_RRDY = 1 << 3, + OMAP_I2C_STAT_XRDY = 1 << 4, + OMAP_I2C_STAT_ROVR = 1 << 11, + OMAP_I2C_STAT_SBD = 1 << 15, +}; + +enum OMAPI2CCONBits { + OMAP_I2C_CON_STT = 1 << 0, + OMAP_I2C_CON_STP = 1 << 1, + OMAP_I2C_CON_TRX = 1 << 9, + OMAP_I2C_CON_MST = 1 << 10, + OMAP_I2C_CON_BE = 1 << 14, + OMAP_I2C_CON_I2C_EN = 1 << 15, +}; + +#define OMAP2_I2C_1_BASE 0x48070000 + +#define N8X0_ADDR 0x48 + +static const uint32_t i2c_base = OMAP2_I2C_1_BASE; + +static void omap_i2c_init(void) +{ + uint16_t data; + + /* verify the mmio address by looking for a known signature */ + memread(i2c_base + OMAP_I2C_REV, &data, 2); + g_assert_cmphex(data, ==, 0x34); +} + +static void omap_i2c_set_slave_addr(uint8_t addr) +{ + uint16_t data = addr; + + memwrite(i2c_base + OMAP_I2C_SA, &data, 2); + memread(i2c_base + OMAP_I2C_SA, &data, 2); + g_assert_cmphex(data, ==, addr); +} + +static void omap_i2c_send(uint8_t addr, const void *buf, uint16_t len) +{ + uint16_t data; + + omap_i2c_set_slave_addr(addr); + + data = len; + memwrite(i2c_base + OMAP_I2C_CNT, &data, 2); + + data = OMAP_I2C_CON_I2C_EN | + OMAP_I2C_CON_TRX | + OMAP_I2C_CON_MST | + OMAP_I2C_CON_STT | + OMAP_I2C_CON_STP; + memwrite(i2c_base + OMAP_I2C_CON, &data, 2); + memread(i2c_base + OMAP_I2C_CON, &data, 2); + g_assert((data & OMAP_I2C_CON_STP) != 0); + + memread(i2c_base + OMAP_I2C_STAT, &data, 2); + g_assert((data & OMAP_I2C_STAT_NACK) == 0); + + while (len > 1) { + memread(i2c_base + OMAP_I2C_STAT, &data, 2); + g_assert((data & OMAP_I2C_STAT_XRDY) != 0); + + memwrite(i2c_base + OMAP_I2C_DATA, buf, 2); + buf = (uint8_t *)buf + 2; + len -= 2; + } + if (len == 1) { + memread(i2c_base + OMAP_I2C_STAT, &data, 2); + g_assert((data & OMAP_I2C_STAT_XRDY) != 0); + + memwrite(i2c_base + OMAP_I2C_DATA, buf, 1); + } + + memread(i2c_base + OMAP_I2C_CON, &data, 2); + g_assert((data & OMAP_I2C_CON_STP) == 0); +} + +static void omap_i2c_recv(uint8_t addr, void *buf, uint16_t len) +{ + uint16_t data, stat; + + omap_i2c_set_slave_addr(addr); + + data = len; + memwrite(i2c_base + OMAP_I2C_CNT, &data, 2); + + data = OMAP_I2C_CON_I2C_EN | + OMAP_I2C_CON_MST | + OMAP_I2C_CON_STT | + OMAP_I2C_CON_STP; + memwrite(i2c_base + OMAP_I2C_CON, &data, 2); + memread(i2c_base + OMAP_I2C_CON, &data, 2); + g_assert((data & OMAP_I2C_CON_STP) == 0); + + memread(i2c_base + OMAP_I2C_STAT, &data, 2); + g_assert((data & OMAP_I2C_STAT_NACK) == 0); + + memread(i2c_base + OMAP_I2C_CNT, &data, 2); + g_assert_cmpuint(data, ==, len); + + while (len > 0) { + memread(i2c_base + OMAP_I2C_STAT, &data, 2); + g_assert((data & OMAP_I2C_STAT_RRDY) != 0); + g_assert((data & OMAP_I2C_STAT_ROVR) == 0); + + memread(i2c_base + OMAP_I2C_DATA, &data, 2); + + memread(i2c_base + OMAP_I2C_STAT, &stat, 2); + if ((stat & OMAP_I2C_STAT_SBD) != 0) { + *(uint8_t *)buf = data & 0xf; + buf = (uint8_t *)buf + 1; + len--; + } else { + memcpy(buf, &data, 2); + buf = (uint8_t *)buf + 2; + len -= 2; + } + } + + memread(i2c_base + OMAP_I2C_CON, &data, 2); + g_assert((data & OMAP_I2C_CON_STP) == 0); +} + +static void send_and_receive(void) +{ + const uint8_t addr = N8X0_ADDR; + uint8_t cmd[3]; + uint8_t resp[2]; + + omap_i2c_init(); + + cmd[0] = 0; + omap_i2c_send(addr, cmd, 1); + omap_i2c_recv(addr, resp, 2); + g_assert_cmpuint(((uint16_t)resp[0] << 8) | resp[1], ==, 0); + + cmd[0] = 1; + cmd[1] = 0x0; + omap_i2c_send(addr, cmd, 2); + omap_i2c_recv(addr, resp, 1); + g_assert_cmphex(resp[0], ==, cmd[1]); + + cmd[0] = 2; + cmd[1] = 0x12; + cmd[2] = 0x34; + omap_i2c_send(addr, cmd, 3); + omap_i2c_recv(addr, resp, 2); + g_assert_cmphex(resp[0], ==, cmd[1]); + g_assert_cmphex(resp[1], ==, cmd[2]); + + cmd[0] = 3; + cmd[1] = 0x42; + cmd[2] = 0x31; + omap_i2c_send(addr, cmd, 3); + omap_i2c_recv(addr, resp, 2); + g_assert_cmphex(resp[0], ==, cmd[1]); + g_assert_cmphex(resp[1], ==, cmd[2]); +} + +int main(int argc, char **argv) +{ + QTestState *s = NULL; + int ret; + + g_test_init(&argc, &argv, NULL); + + s = qtest_start("-display none -machine n800"); + + qtest_add_func("/tmp105/tx-rx", send_and_receive); + + ret = g_test_run(); + + if (s) { + qtest_quit(s); + } + + return ret; +}