diff options
Diffstat (limited to 'qemu/tests/libqos/i2c-omap.c')
| -rw-r--r-- | qemu/tests/libqos/i2c-omap.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/qemu/tests/libqos/i2c-omap.c b/qemu/tests/libqos/i2c-omap.c deleted file mode 100644 index 2028f2f14..000000000 --- a/qemu/tests/libqos/i2c-omap.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * QTest I2C driver - * - * 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 "qemu/osdep.h" -#include "libqos/i2c.h" - -#include <glib.h> - -#include "qemu/bswap.h" -#include "libqtest.h" - -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, -}; - -typedef struct OMAPI2C { - I2CAdapter parent; - - uint64_t addr; -} OMAPI2C; - - -static void omap_i2c_set_slave_addr(OMAPI2C *s, uint8_t addr) -{ - uint16_t data = addr; - - writew(s->addr + OMAP_I2C_SA, data); - data = readw(s->addr + OMAP_I2C_SA); - g_assert_cmphex(data, ==, addr); -} - -static void omap_i2c_send(I2CAdapter *i2c, uint8_t addr, - const uint8_t *buf, uint16_t len) -{ - OMAPI2C *s = (OMAPI2C *)i2c; - uint16_t data; - - omap_i2c_set_slave_addr(s, addr); - - data = len; - writew(s->addr + OMAP_I2C_CNT, data); - - data = OMAP_I2C_CON_I2C_EN | - OMAP_I2C_CON_TRX | - OMAP_I2C_CON_MST | - OMAP_I2C_CON_STT | - OMAP_I2C_CON_STP; - writew(s->addr + OMAP_I2C_CON, data); - data = readw(s->addr + OMAP_I2C_CON); - g_assert((data & OMAP_I2C_CON_STP) != 0); - - data = readw(s->addr + OMAP_I2C_STAT); - g_assert((data & OMAP_I2C_STAT_NACK) == 0); - - while (len > 1) { - data = readw(s->addr + OMAP_I2C_STAT); - g_assert((data & OMAP_I2C_STAT_XRDY) != 0); - - data = buf[0] | ((uint16_t)buf[1] << 8); - writew(s->addr + OMAP_I2C_DATA, data); - buf = (uint8_t *)buf + 2; - len -= 2; - } - if (len == 1) { - data = readw(s->addr + OMAP_I2C_STAT); - g_assert((data & OMAP_I2C_STAT_XRDY) != 0); - - data = buf[0]; - writew(s->addr + OMAP_I2C_DATA, data); - } - - data = readw(s->addr + OMAP_I2C_CON); - g_assert((data & OMAP_I2C_CON_STP) == 0); -} - -static void omap_i2c_recv(I2CAdapter *i2c, uint8_t addr, - uint8_t *buf, uint16_t len) -{ - OMAPI2C *s = (OMAPI2C *)i2c; - uint16_t data, stat; - - omap_i2c_set_slave_addr(s, addr); - - data = len; - writew(s->addr + OMAP_I2C_CNT, data); - - data = OMAP_I2C_CON_I2C_EN | - OMAP_I2C_CON_MST | - OMAP_I2C_CON_STT | - OMAP_I2C_CON_STP; - writew(s->addr + OMAP_I2C_CON, data); - data = readw(s->addr + OMAP_I2C_CON); - g_assert((data & OMAP_I2C_CON_STP) == 0); - - data = readw(s->addr + OMAP_I2C_STAT); - g_assert((data & OMAP_I2C_STAT_NACK) == 0); - - data = readw(s->addr + OMAP_I2C_CNT); - g_assert_cmpuint(data, ==, len); - - while (len > 0) { - data = readw(s->addr + OMAP_I2C_STAT); - g_assert((data & OMAP_I2C_STAT_RRDY) != 0); - g_assert((data & OMAP_I2C_STAT_ROVR) == 0); - - data = readw(s->addr + OMAP_I2C_DATA); - - stat = readw(s->addr + OMAP_I2C_STAT); - - if (unlikely(len == 1)) { - g_assert((stat & OMAP_I2C_STAT_SBD) != 0); - - buf[0] = data & 0xff; - buf++; - len--; - } else { - buf[0] = data & 0xff; - buf[1] = data >> 8; - buf += 2; - len -= 2; - } - } - - data = readw(s->addr + OMAP_I2C_CON); - g_assert((data & OMAP_I2C_CON_STP) == 0); -} - -I2CAdapter *omap_i2c_create(uint64_t addr) -{ - OMAPI2C *s = g_malloc0(sizeof(*s)); - I2CAdapter *i2c = (I2CAdapter *)s; - uint16_t data; - - s->addr = addr; - - i2c->send = omap_i2c_send; - i2c->recv = omap_i2c_recv; - - /* verify the mmio address by looking for a known signature */ - data = readw(addr + OMAP_I2C_REV); - g_assert_cmphex(data, ==, 0x34); - - return i2c; -} |