accel/tcg: Record mmio bytes during translation
[qemu/kevin.git] / tests / qtest / qtest_aspeed.c
blobf6da9adea9c4c56a08b519dadf831d64c11edaf1
1 /*
2 * Aspeed i2c bus interface for reading from and writing to i2c device registers
4 * Copyright (c) 2023 IBM Corporation
6 * Authors:
7 * Stefan Berger <stefanb@linux.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
13 #include "qemu/osdep.h"
15 #include "qtest_aspeed.h"
16 #include "hw/i2c/aspeed_i2c.h"
18 static void aspeed_i2c_startup(QTestState *s, uint32_t baseaddr,
19 uint8_t slave_addr, uint8_t reg)
21 uint32_t v;
22 static int once;
24 if (!once) {
25 /* one time: enable master */
26 qtest_writel(s, baseaddr + A_I2CC_FUN_CTRL, 0);
27 v = qtest_readl(s, baseaddr + A_I2CC_FUN_CTRL) | A_I2CD_MASTER_EN;
28 qtest_writel(s, baseaddr + A_I2CC_FUN_CTRL, v);
29 once = 1;
32 /* select device */
33 qtest_writel(s, baseaddr + A_I2CD_BYTE_BUF, slave_addr << 1);
34 qtest_writel(s, baseaddr + A_I2CD_CMD,
35 A_I2CD_M_START_CMD | A_I2CD_M_RX_CMD);
37 /* select the register to write to */
38 qtest_writel(s, baseaddr + A_I2CD_BYTE_BUF, reg);
39 qtest_writel(s, baseaddr + A_I2CD_CMD, A_I2CD_M_TX_CMD);
42 static uint32_t aspeed_i2c_read_n(QTestState *s,
43 uint32_t baseaddr, uint8_t slave_addr,
44 uint8_t reg, size_t nbytes)
46 uint32_t res = 0;
47 uint32_t v;
48 size_t i;
50 aspeed_i2c_startup(s, baseaddr, slave_addr, reg);
52 for (i = 0; i < nbytes; i++) {
53 qtest_writel(s, baseaddr + A_I2CD_CMD, A_I2CD_M_RX_CMD);
54 v = qtest_readl(s, baseaddr + A_I2CD_BYTE_BUF) >> 8;
55 res |= (v & 0xff) << (i * 8);
58 qtest_writel(s, baseaddr + A_I2CD_CMD, A_I2CD_M_STOP_CMD);
60 return res;
63 uint32_t aspeed_i2c_readl(QTestState *s,
64 uint32_t baseaddr, uint8_t slave_addr, uint8_t reg)
66 return aspeed_i2c_read_n(s, baseaddr, slave_addr, reg, sizeof(uint32_t));
69 uint16_t aspeed_i2c_readw(QTestState *s,
70 uint32_t baseaddr, uint8_t slave_addr, uint8_t reg)
72 return aspeed_i2c_read_n(s, baseaddr, slave_addr, reg, sizeof(uint16_t));
75 uint8_t aspeed_i2c_readb(QTestState *s,
76 uint32_t baseaddr, uint8_t slave_addr, uint8_t reg)
78 return aspeed_i2c_read_n(s, baseaddr, slave_addr, reg, sizeof(uint8_t));
81 static void aspeed_i2c_write_n(QTestState *s,
82 uint32_t baseaddr, uint8_t slave_addr,
83 uint8_t reg, uint32_t v, size_t nbytes)
85 size_t i;
87 aspeed_i2c_startup(s, baseaddr, slave_addr, reg);
89 for (i = 0; i < nbytes; i++) {
90 qtest_writel(s, baseaddr + A_I2CD_BYTE_BUF, v & 0xff);
91 v >>= 8;
92 qtest_writel(s, baseaddr + A_I2CD_CMD, A_I2CD_M_TX_CMD);
95 qtest_writel(s, baseaddr + A_I2CD_CMD, A_I2CD_M_STOP_CMD);
98 void aspeed_i2c_writel(QTestState *s,
99 uint32_t baseaddr, uint8_t slave_addr,
100 uint8_t reg, uint32_t v)
102 aspeed_i2c_write_n(s, baseaddr, slave_addr, reg, v, sizeof(v));
105 void aspeed_i2c_writew(QTestState *s,
106 uint32_t baseaddr, uint8_t slave_addr,
107 uint8_t reg, uint16_t v)
109 aspeed_i2c_write_n(s, baseaddr, slave_addr, reg, v, sizeof(v));
112 void aspeed_i2c_writeb(QTestState *s,
113 uint32_t baseaddr, uint8_t slave_addr,
114 uint8_t reg, uint8_t v)
116 aspeed_i2c_write_n(s, baseaddr, slave_addr, reg, v, sizeof(v));