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aspeed: i2c: Migrate to registerfields API

Browse Source 
This cleans up some of the field accessing, setting, and clearing
bitwise operations, and wraps them in macros instead.

Signed-off-by: Joe Komlodi <komlodi@google.com>
Change-Id: I33018d6325fa04376e7c29dc4a49ab389a8e333a
Message-Id: <20220331043248.2237838-4-komlodi@google.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Joe Komlodi 2022-06-13 14:05:48 +02:00 committed by Cédric Le Goater
parent 4a71d6d32e
commit 3be3d6ccf2
1 changed files with 196 additions and 197 deletions
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393
hw/i2c/aspeed_i2c.c
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@ -28,70 +28,61 @@
#include "hw/i2c/aspeed_i2c.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "hw/registerfields.h"
#include "trace.h"
/* I2C Global Register */
#define I2C_CTRL_STATUS 0x00 /* Device Interrupt Status */
#define I2C_CTRL_ASSIGN 0x08 /* Device Interrupt Target
Assignment */
#define I2C_CTRL_GLOBAL 0x0C /* Global Control Register */
#define I2C_CTRL_SRAM_EN BIT(0)
REG32(I2C_CTRL_STATUS, 0x0) /* Device Interrupt Status */
REG32(I2C_CTRL_ASSIGN, 0x8) /* Device Interrupt Target Assignment */
REG32(I2C_CTRL_GLOBAL, 0xC) /* Global Control Register */
FIELD(I2C_CTRL_GLOBAL, SRAM_EN, 0, 1)
/* I2C Device (Bus) Register */
#define I2CD_FUN_CTRL_REG 0x00 /* I2CD Function Control */
#define I2CD_POOL_PAGE_SEL(x) (((x) >> 20) & 0x7) /* AST2400 */
#define I2CD_M_SDA_LOCK_EN (0x1 << 16)
#define I2CD_MULTI_MASTER_DIS (0x1 << 15)
#define I2CD_M_SCL_DRIVE_EN (0x1 << 14)
#define I2CD_MSB_STS (0x1 << 9)
#define I2CD_SDA_DRIVE_1T_EN (0x1 << 8)
#define I2CD_M_SDA_DRIVE_1T_EN (0x1 << 7)
#define I2CD_M_HIGH_SPEED_EN (0x1 << 6)
#define I2CD_DEF_ADDR_EN (0x1 << 5)
#define I2CD_DEF_ALERT_EN (0x1 << 4)
#define I2CD_DEF_ARP_EN (0x1 << 3)
#define I2CD_DEF_GCALL_EN (0x1 << 2)
#define I2CD_SLAVE_EN (0x1 << 1)
#define I2CD_MASTER_EN (0x1)
#define I2CD_AC_TIMING_REG1 0x04 /* Clock and AC Timing Control #1 */
#define I2CD_AC_TIMING_REG2 0x08 /* Clock and AC Timing Control #1 */
#define I2CD_INTR_CTRL_REG 0x0c /* I2CD Interrupt Control */
#define I2CD_INTR_STS_REG 0x10 /* I2CD Interrupt Status */
#define I2CD_INTR_SLAVE_ADDR_MATCH (0x1 << 31) /* 0: addr1 1: addr2 */
#define I2CD_INTR_SLAVE_ADDR_RX_PENDING (0x1 << 30)
/* bits[19-16] Reserved */
/* All bits below are cleared by writing 1 */
#define I2CD_INTR_SLAVE_INACTIVE_TIMEOUT (0x1 << 15)
#define I2CD_INTR_SDA_DL_TIMEOUT (0x1 << 14)
#define I2CD_INTR_BUS_RECOVER_DONE (0x1 << 13)
#define I2CD_INTR_SMBUS_ALERT (0x1 << 12) /* Bus [0-3] only */
#define I2CD_INTR_SMBUS_ARP_ADDR (0x1 << 11) /* Removed */
#define I2CD_INTR_SMBUS_DEV_ALERT_ADDR (0x1 << 10) /* Removed */
#define I2CD_INTR_SMBUS_DEF_ADDR (0x1 << 9) /* Removed */
#define I2CD_INTR_GCALL_ADDR (0x1 << 8) /* Removed */
#define I2CD_INTR_SLAVE_ADDR_RX_MATCH (0x1 << 7) /* use RX_DONE */
#define I2CD_INTR_SCL_TIMEOUT (0x1 << 6)
#define I2CD_INTR_ABNORMAL (0x1 << 5)
#define I2CD_INTR_NORMAL_STOP (0x1 << 4)
#define I2CD_INTR_ARBIT_LOSS (0x1 << 3)
#define I2CD_INTR_RX_DONE (0x1 << 2)
#define I2CD_INTR_TX_NAK (0x1 << 1)
#define I2CD_INTR_TX_ACK (0x1 << 0)
#define I2CD_CMD_REG 0x14 /* I2CD Command/Status */
#define I2CD_SDA_OE (0x1 << 28)
#define I2CD_SDA_O (0x1 << 27)
#define I2CD_SCL_OE (0x1 << 26)
#define I2CD_SCL_O (0x1 << 25)
#define I2CD_TX_TIMING (0x1 << 24)
#define I2CD_TX_STATUS (0x1 << 23)
#define I2CD_TX_STATE_SHIFT 19 /* Tx State Machine */
REG32(I2CD_FUN_CTRL, 0x0) /* I2CD Function Control */
FIELD(I2CD_FUN_CTRL, POOL_PAGE_SEL, 20, 3) /* AST2400 */
FIELD(I2CD_FUN_CTRL, M_SDA_LOCK_EN, 16, 1)
FIELD(I2CD_FUN_CTRL, MULTI_MASTER_DIS, 15, 1)
FIELD(I2CD_FUN_CTRL, M_SCL_DRIVE_EN, 14, 1)
FIELD(I2CD_FUN_CTRL, MSB_STS, 9, 1)
FIELD(I2CD_FUN_CTRL, SDA_DRIVE_IT_EN, 8, 1)
FIELD(I2CD_FUN_CTRL, M_SDA_DRIVE_IT_EN, 7, 1)
FIELD(I2CD_FUN_CTRL, M_HIGH_SPEED_EN, 6, 1)
FIELD(I2CD_FUN_CTRL, DEF_ADDR_EN, 5, 1)
FIELD(I2CD_FUN_CTRL, DEF_ALERT_EN, 4, 1)
FIELD(I2CD_FUN_CTRL, DEF_ARP_EN, 3, 1)
FIELD(I2CD_FUN_CTRL, DEF_GCALL_EN, 2, 1)
FIELD(I2CD_FUN_CTRL, SLAVE_EN, 1, 1)
FIELD(I2CD_FUN_CTRL, MASTER_EN, 0, 1)
REG32(I2CD_AC_TIMING1, 0x04) /* Clock and AC Timing Control #1 */
REG32(I2CD_AC_TIMING2, 0x08) /* Clock and AC Timing Control #2 */
REG32(I2CD_INTR_CTRL, 0x0C) /* I2CD Interrupt Control */
REG32(I2CD_INTR_STS, 0x10) /* I2CD Interrupt Status */
FIELD(I2CD_INTR_STS, SLAVE_ADDR_MATCH, 31, 1) /* 0: addr1 1: addr2 */
FIELD(I2CD_INTR_STS, SLAVE_ADDR_RX_PENDING, 29, 1)
FIELD(I2CD_INTR_STS, SLAVE_INACTIVE_TIMEOUT, 15, 1)
FIELD(I2CD_INTR_STS, SDA_DL_TIMEOUT, 14, 1)
FIELD(I2CD_INTR_STS, BUS_RECOVER_DONE, 13, 1)
FIELD(I2CD_INTR_STS, SMBUS_ALERT, 12, 1) /* Bus [0-3] only */
FIELD(I2CD_INTR_STS, SMBUS_ARP_ADDR, 11, 1) /* Removed */
FIELD(I2CD_INTR_STS, SMBUS_DEV_ALERT_ADDR, 10, 1) /* Removed */
FIELD(I2CD_INTR_STS, SMBUS_DEF_ADDR, 9, 1) /* Removed */
FIELD(I2CD_INTR_STS, GCALL_ADDR, 8, 1) /* Removed */
FIELD(I2CD_INTR_STS, SLAVE_ADDR_RX_MATCH, 7, 1) /* use RX_DONE */
FIELD(I2CD_INTR_STS, SCL_TIMEOUT, 6, 1)
FIELD(I2CD_INTR_STS, ABNORMAL, 5, 1)
FIELD(I2CD_INTR_STS, NORMAL_STOP, 4, 1)
FIELD(I2CD_INTR_STS, ARBIT_LOSS, 3, 1)
FIELD(I2CD_INTR_STS, RX_DONE, 2, 1)
FIELD(I2CD_INTR_STS, TX_NAK, 1, 1)
FIELD(I2CD_INTR_STS, TX_ACK, 0, 1)
REG32(I2CD_CMD, 0x14) /* I2CD Command/Status */
FIELD(I2CD_CMD, SDA_OE, 28, 1)
FIELD(I2CD_CMD, SDA_O, 27, 1)
FIELD(I2CD_CMD, SCL_OE, 26, 1)
FIELD(I2CD_CMD, SCL_O, 25, 1)
FIELD(I2CD_CMD, TX_TIMING, 23, 2)
FIELD(I2CD_CMD, TX_STATE, 19, 4)
/* Tx State Machine */
#define I2CD_TX_STATE_MASK 0xf
#define I2CD_IDLE 0x0
#define I2CD_MACTIVE 0x8
@ -108,51 +99,47 @@
#define I2CD_STXD 0x6
#define I2CD_SRXACK 0x7
#define I2CD_RECOVER 0x3
#define I2CD_SCL_LINE_STS (0x1 << 18)
#define I2CD_SDA_LINE_STS (0x1 << 17)
#define I2CD_BUS_BUSY_STS (0x1 << 16)
#define I2CD_SDA_OE_OUT_DIR (0x1 << 15)
#define I2CD_SDA_O_OUT_DIR (0x1 << 14)
#define I2CD_SCL_OE_OUT_DIR (0x1 << 13)
#define I2CD_SCL_O_OUT_DIR (0x1 << 12)
#define I2CD_BUS_RECOVER_CMD_EN (0x1 << 11)
#define I2CD_S_ALT_EN (0x1 << 10)
/* Command Bit */
#define I2CD_RX_DMA_ENABLE (0x1 << 9)
#define I2CD_TX_DMA_ENABLE (0x1 << 8)
#define I2CD_RX_BUFF_ENABLE (0x1 << 7)
#define I2CD_TX_BUFF_ENABLE (0x1 << 6)
#define I2CD_M_STOP_CMD (0x1 << 5)
#define I2CD_M_S_RX_CMD_LAST (0x1 << 4)
#define I2CD_M_RX_CMD (0x1 << 3)
#define I2CD_S_TX_CMD (0x1 << 2)
#define I2CD_M_TX_CMD (0x1 << 1)
#define I2CD_M_START_CMD (0x1)
#define I2CD_DEV_ADDR_REG 0x18 /* Slave Device Address */
#define I2CD_POOL_CTRL_REG 0x1c /* Pool Buffer Control */
#define I2CD_POOL_RX_COUNT(x) (((x) >> 24) & 0xff)
#define I2CD_POOL_RX_SIZE(x) ((((x) >> 16) & 0xff) + 1)
#define I2CD_POOL_TX_COUNT(x) ((((x) >> 8) & 0xff) + 1)
#define I2CD_POOL_OFFSET(x) (((x) & 0x3f) << 2) /* AST2400 */
#define I2CD_BYTE_BUF_REG 0x20 /* Transmit/Receive Byte Buffer */
#define I2CD_BYTE_BUF_TX_SHIFT 0
#define I2CD_BYTE_BUF_TX_MASK 0xff
#define I2CD_BYTE_BUF_RX_SHIFT 8
#define I2CD_BYTE_BUF_RX_MASK 0xff
#define I2CD_DMA_ADDR 0x24 /* DMA Buffer Address */
#define I2CD_DMA_LEN 0x28 /* DMA Transfer Length < 4KB */
FIELD(I2CD_CMD, SCL_LINE_STS, 18, 1)
FIELD(I2CD_CMD, SDA_LINE_STS, 17, 1)
FIELD(I2CD_CMD, BUS_BUSY_STS, 16, 1)
FIELD(I2CD_CMD, SDA_OE_OUT_DIR, 15, 1)
FIELD(I2CD_CMD, SDA_O_OUT_DIR, 14, 1)
FIELD(I2CD_CMD, SCL_OE_OUT_DIR, 13, 1)
FIELD(I2CD_CMD, SCL_O_OUT_DIR, 12, 1)
FIELD(I2CD_CMD, BUS_RECOVER_CMD_EN, 11, 1)
FIELD(I2CD_CMD, S_ALT_EN, 10, 1)
/* Command Bits */
FIELD(I2CD_CMD, RX_DMA_EN, 9, 1)
FIELD(I2CD_CMD, TX_DMA_EN, 8, 1)
FIELD(I2CD_CMD, RX_BUFF_EN, 7, 1)
FIELD(I2CD_CMD, TX_BUFF_EN, 6, 1)
FIELD(I2CD_CMD, M_STOP_CMD, 5, 1)
FIELD(I2CD_CMD, M_S_RX_CMD_LAST, 4, 1)
FIELD(I2CD_CMD, M_RX_CMD, 3, 1)
FIELD(I2CD_CMD, S_TX_CMD, 2, 1)
FIELD(I2CD_CMD, M_TX_CMD, 1, 1)
FIELD(I2CD_CMD, M_START_CMD, 0, 1)
REG32(I2CD_DEV_ADDR, 0x18) /* Slave Device Address */
REG32(I2CD_POOL_CTRL, 0x1C) /* Pool Buffer Control */
FIELD(I2CD_POOL_CTRL, RX_COUNT, 24, 5)
FIELD(I2CD_POOL_CTRL, RX_SIZE, 16, 5)
FIELD(I2CD_POOL_CTRL, TX_COUNT, 9, 5)
FIELD(I2CD_POOL_CTRL, OFFSET, 2, 6) /* AST2400 */
REG32(I2CD_BYTE_BUF, 0x20) /* Transmit/Receive Byte Buffer */
FIELD(I2CD_BYTE_BUF, RX_BUF, 8, 8)
FIELD(I2CD_BYTE_BUF, TX_BUF, 0, 8)
REG32(I2CD_DMA_ADDR, 0x24) /* DMA Buffer Address */
REG32(I2CD_DMA_LEN, 0x28) /* DMA Transfer Length < 4KB */
static inline bool aspeed_i2c_bus_is_master(AspeedI2CBus *bus)
{
return bus->ctrl & I2CD_MASTER_EN;
return FIELD_EX32(bus->ctrl, I2CD_FUN_CTRL, MASTER_EN);
}
static inline bool aspeed_i2c_bus_is_enabled(AspeedI2CBus *bus)
{
return bus->ctrl & (I2CD_MASTER_EN | I2CD_SLAVE_EN);
return FIELD_EX32(bus->ctrl, I2CD_FUN_CTRL, MASTER_EN) ||
FIELD_EX32(bus->ctrl, I2CD_FUN_CTRL, SLAVE_EN);
}
static inline void aspeed_i2c_bus_raise_interrupt(AspeedI2CBus *bus)
@ -160,11 +147,13 @@ static inline void aspeed_i2c_bus_raise_interrupt(AspeedI2CBus *bus)
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(bus->controller);
trace_aspeed_i2c_bus_raise_interrupt(bus->intr_status,
bus->intr_status & I2CD_INTR_TX_NAK ? "nak|" : "",
bus->intr_status & I2CD_INTR_TX_ACK ? "ack|" : "",
bus->intr_status & I2CD_INTR_RX_DONE ? "done|" : "",
bus->intr_status & I2CD_INTR_NORMAL_STOP ? "normal|" : "",
bus->intr_status & I2CD_INTR_ABNORMAL ? "abnormal" : "");
FIELD_EX32(bus->intr_status, I2CD_INTR_STS, TX_NAK) ? "nak|" : "",
FIELD_EX32(bus->intr_status, I2CD_INTR_STS, TX_ACK) ? "ack|" : "",
FIELD_EX32(bus->intr_status, I2CD_INTR_STS, RX_DONE) ? "done|" : "",
FIELD_EX32(bus->intr_status, I2CD_INTR_STS, NORMAL_STOP) ? "normal|"
: "",
FIELD_EX32(bus->intr_status, I2CD_INTR_STS, ABNORMAL) ? "abnormal"
: "");
bus->intr_status &= bus->intr_ctrl;
if (bus->intr_status) {
@ -181,38 +170,38 @@ static uint64_t aspeed_i2c_bus_read(void *opaque, hwaddr offset,
uint64_t value = -1;
switch (offset) {
case I2CD_FUN_CTRL_REG:
case A_I2CD_FUN_CTRL:
value = bus->ctrl;
break;
case I2CD_AC_TIMING_REG1:
case A_I2CD_AC_TIMING1:
value = bus->timing[0];
break;
case I2CD_AC_TIMING_REG2:
case A_I2CD_AC_TIMING2:
value = bus->timing[1];
break;
case I2CD_INTR_CTRL_REG:
case A_I2CD_INTR_CTRL:
value = bus->intr_ctrl;
break;
case I2CD_INTR_STS_REG:
case A_I2CD_INTR_STS:
value = bus->intr_status;
break;
case I2CD_POOL_CTRL_REG:
case A_I2CD_POOL_CTRL:
value = bus->pool_ctrl;
break;
case I2CD_BYTE_BUF_REG:
case A_I2CD_BYTE_BUF:
value = bus->buf;
break;
case I2CD_CMD_REG:
case A_I2CD_CMD:
value = bus->cmd | (i2c_bus_busy(bus->bus) << 16);
break;
case I2CD_DMA_ADDR:
case A_I2CD_DMA_ADDR:
if (!aic->has_dma) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: No DMA support\n", __func__);
break;
}
value = bus->dma_addr;
break;
case I2CD_DMA_LEN:
case A_I2CD_DMA_LEN:
if (!aic->has_dma) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: No DMA support\n", __func__);
break;
@ -233,13 +222,12 @@ static uint64_t aspeed_i2c_bus_read(void *opaque, hwaddr offset,
static void aspeed_i2c_set_state(AspeedI2CBus *bus, uint8_t state)
{
bus->cmd &= ~(I2CD_TX_STATE_MASK << I2CD_TX_STATE_SHIFT);
bus->cmd |= (state & I2CD_TX_STATE_MASK) << I2CD_TX_STATE_SHIFT;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, TX_STATE, state);
}
static uint8_t aspeed_i2c_get_state(AspeedI2CBus *bus)
{
return (bus->cmd >> I2CD_TX_STATE_SHIFT) & I2CD_TX_STATE_MASK;
return FIELD_EX32(bus->cmd, I2CD_CMD, TX_STATE);
}
static int aspeed_i2c_dma_read(AspeedI2CBus *bus, uint8_t *data)
@ -265,21 +253,21 @@ static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8_t pool_start)
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(bus->controller);
int ret = -1;
int i;
int pool_tx_count = FIELD_EX32(bus->pool_ctrl, I2CD_POOL_CTRL, TX_COUNT);
if (bus->cmd & I2CD_TX_BUFF_ENABLE) {
for (i = pool_start; i < I2CD_POOL_TX_COUNT(bus->pool_ctrl); i++) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_BUFF_EN)) {
for (i = pool_start; i < pool_tx_count; i++) {
uint8_t *pool_base = aic->bus_pool_base(bus);
trace_aspeed_i2c_bus_send("BUF", i + 1,
I2CD_POOL_TX_COUNT(bus->pool_ctrl),
trace_aspeed_i2c_bus_send("BUF", i + 1, pool_tx_count,
pool_base[i]);
ret = i2c_send(bus->bus, pool_base[i]);
if (ret) {
break;
}
}
bus->cmd &= ~I2CD_TX_BUFF_ENABLE;
} else if (bus->cmd & I2CD_TX_DMA_ENABLE) {
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, TX_BUFF_EN, 0);
} else if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_DMA_EN)) {
while (bus->dma_len) {
uint8_t data;
aspeed_i2c_dma_read(bus, &data);
@ -289,7 +277,7 @@ static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8_t pool_start)
break;
}
}
bus->cmd &= ~I2CD_TX_DMA_ENABLE;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, TX_DMA_EN, 0);
} else {
trace_aspeed_i2c_bus_send("BYTE", pool_start, 1, bus->buf);
ret = i2c_send(bus->bus, bus->buf);
@ -304,22 +292,22 @@ static void aspeed_i2c_bus_recv(AspeedI2CBus *bus)
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s);
uint8_t data;
int i;
int pool_rx_count = FIELD_EX32(bus->pool_ctrl, I2CD_POOL_CTRL, RX_COUNT);
if (bus->cmd & I2CD_RX_BUFF_ENABLE) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, RX_BUFF_EN)) {
uint8_t *pool_base = aic->bus_pool_base(bus);
for (i = 0; i < I2CD_POOL_RX_SIZE(bus->pool_ctrl); i++) {
for (i = 0; i < pool_rx_count; i++) {
pool_base[i] = i2c_recv(bus->bus);
trace_aspeed_i2c_bus_recv("BUF", i + 1,
I2CD_POOL_RX_SIZE(bus->pool_ctrl),
trace_aspeed_i2c_bus_recv("BUF", i + 1, pool_rx_count,
pool_base[i]);
}
/* Update RX count */
bus->pool_ctrl &= ~(0xff << 24);
bus->pool_ctrl |= (i & 0xff) << 24;
bus->cmd &= ~I2CD_RX_BUFF_ENABLE;
} else if (bus->cmd & I2CD_RX_DMA_ENABLE) {
bus->pool_ctrl = FIELD_DP32(bus->pool_ctrl, I2CD_POOL_CTRL, RX_COUNT,
i & 0xff);
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, RX_BUFF_EN, 0);
} else if (FIELD_EX32(bus->cmd, I2CD_CMD, RX_DMA_EN)) {
uint8_t data;
while (bus->dma_len) {
@ -337,11 +325,11 @@ static void aspeed_i2c_bus_recv(AspeedI2CBus *bus)
bus->dma_addr++;
bus->dma_len--;
}
bus->cmd &= ~I2CD_RX_DMA_ENABLE;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, RX_DMA_EN, 0);
} else {
data = i2c_recv(bus->bus);
trace_aspeed_i2c_bus_recv("BYTE", 1, 1, bus->buf);
bus->buf = (data & I2CD_BYTE_BUF_RX_MASK) << I2CD_BYTE_BUF_RX_SHIFT;
bus->buf = FIELD_DP32(bus->buf, I2CD_BYTE_BUF, RX_BUF, data);
}
}
@ -349,11 +337,12 @@ static void aspeed_i2c_handle_rx_cmd(AspeedI2CBus *bus)
{
aspeed_i2c_set_state(bus, I2CD_MRXD);
aspeed_i2c_bus_recv(bus);
bus->intr_status |= I2CD_INTR_RX_DONE;
if (bus->cmd & I2CD_M_S_RX_CMD_LAST) {
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS, RX_DONE, 1);
if (FIELD_EX32(bus->cmd, I2CD_CMD, M_S_RX_CMD_LAST)) {
i2c_nack(bus->bus);
}
bus->cmd &= ~(I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST);
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_RX_CMD, 0);
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_S_RX_CMD_LAST, 0);
aspeed_i2c_set_state(bus, I2CD_MACTIVE);
}
@ -361,11 +350,11 @@ static uint8_t aspeed_i2c_get_addr(AspeedI2CBus *bus)
{
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(bus->controller);
if (bus->cmd & I2CD_TX_BUFF_ENABLE) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_BUFF_EN)) {
uint8_t *pool_base = aic->bus_pool_base(bus);
return pool_base[0];
} else if (bus->cmd & I2CD_TX_DMA_ENABLE) {
} else if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_DMA_EN)) {
uint8_t data;
aspeed_i2c_dma_read(bus, &data);
@ -379,7 +368,10 @@ static bool aspeed_i2c_check_sram(AspeedI2CBus *bus)
{
AspeedI2CState *s = bus->controller;
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s);
bool dma_en = FIELD_EX32(bus->cmd, I2CD_CMD, RX_DMA_EN) ||
FIELD_EX32(bus->cmd, I2CD_CMD, TX_DMA_EN) ||
FIELD_EX32(bus->cmd, I2CD_CMD, RX_BUFF_EN) ||
FIELD_EX32(bus->cmd, I2CD_CMD, TX_BUFF_EN);
if (!aic->check_sram) {
return true;
}
@ -388,9 +380,7 @@ static bool aspeed_i2c_check_sram(AspeedI2CBus *bus)
* AST2500: SRAM must be enabled before using the Buffer Pool or
* DMA mode.
*/
if (!(s->ctrl_global & I2C_CTRL_SRAM_EN) &&
(bus->cmd & (I2CD_RX_DMA_ENABLE | I2CD_TX_DMA_ENABLE |
I2CD_RX_BUFF_ENABLE | I2CD_TX_BUFF_ENABLE))) {
if (!FIELD_EX32(s->ctrl_global, I2C_CTRL_GLOBAL, SRAM_EN) && dma_en) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: SRAM is not enabled\n", __func__);
return false;
}
@ -402,25 +392,24 @@ static void aspeed_i2c_bus_cmd_dump(AspeedI2CBus *bus)
{
g_autofree char *cmd_flags = NULL;
uint32_t count;
if (bus->cmd & (I2CD_RX_BUFF_ENABLE | I2CD_RX_BUFF_ENABLE)) {
count = I2CD_POOL_TX_COUNT(bus->pool_ctrl);
} else if (bus->cmd & (I2CD_RX_DMA_ENABLE | I2CD_RX_DMA_ENABLE)) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, RX_BUFF_EN)) {
count = FIELD_EX32(bus->pool_ctrl, I2CD_POOL_CTRL, TX_COUNT);
} else if (FIELD_EX32(bus->cmd, I2CD_CMD, RX_DMA_EN)) {
count = bus->dma_len;
} else { /* BYTE mode */
count = 1;
}
cmd_flags = g_strdup_printf("%s%s%s%s%s%s%s%s%s",
bus->cmd & I2CD_M_START_CMD ? "start|" : "",
bus->cmd & I2CD_RX_DMA_ENABLE ? "rxdma|" : "",
bus->cmd & I2CD_TX_DMA_ENABLE ? "txdma|" : "",
bus->cmd & I2CD_RX_BUFF_ENABLE ? "rxbuf|" : "",
bus->cmd & I2CD_TX_BUFF_ENABLE ? "txbuf|" : "",
bus->cmd & I2CD_M_TX_CMD ? "tx|" : "",
bus->cmd & I2CD_M_RX_CMD ? "rx|" : "",
bus->cmd & I2CD_M_S_RX_CMD_LAST ? "last|" : "",
bus->cmd & I2CD_M_STOP_CMD ? "stop" : "");
FIELD_EX32(bus->cmd, I2CD_CMD, M_START_CMD) ? "start|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, RX_DMA_EN) ? "rxdma|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, TX_DMA_EN) ? "txdma|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, RX_BUFF_EN) ? "rxbuf|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, TX_BUFF_EN) ? "txbuf|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, M_TX_CMD) ? "tx|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, M_RX_CMD) ? "rx|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, M_S_RX_CMD_LAST) ? "last|" : "",
FIELD_EX32(bus->cmd, I2CD_CMD, M_STOP_CMD) ? "stop" : "");
trace_aspeed_i2c_bus_cmd(bus->cmd, cmd_flags, count, bus->intr_status);
}
@ -444,7 +433,7 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
aspeed_i2c_bus_cmd_dump(bus);
}
if (bus->cmd & I2CD_M_START_CMD) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, M_START_CMD)) {
uint8_t state = aspeed_i2c_get_state(bus) & I2CD_MACTIVE ?
I2CD_MSTARTR : I2CD_MSTART;
uint8_t addr;
@ -455,21 +444,23 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
if (i2c_start_transfer(bus->bus, extract32(addr, 1, 7),
extract32(addr, 0, 1))) {
bus->intr_status |= I2CD_INTR_TX_NAK;
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
TX_NAK, 1);
} else {
bus->intr_status |= I2CD_INTR_TX_ACK;
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
TX_ACK, 1);
}
bus->cmd &= ~I2CD_M_START_CMD;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_START_CMD, 0);
/*
* The START command is also a TX command, as the slave
* address is sent on the bus. Drop the TX flag if nothing
* else needs to be sent in this sequence.
*/
if (bus->cmd & I2CD_TX_BUFF_ENABLE) {
if (I2CD_POOL_TX_COUNT(bus->pool_ctrl) == 1) {
bus->cmd &= ~I2CD_M_TX_CMD;
if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_BUFF_EN)) {
if (FIELD_EX32(bus->pool_ctrl, I2CD_POOL_CTRL, TX_COUNT) == 1) {
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_TX_CMD, 0);
} else {
/*
* Increase the start index in the TX pool buffer to
@ -477,12 +468,12 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
*/
pool_start++;
}
} else if (bus->cmd & I2CD_TX_DMA_ENABLE) {
} else if (FIELD_EX32(bus->cmd, I2CD_CMD, TX_DMA_EN)) {
if (bus->dma_len == 0) {
bus->cmd &= ~I2CD_M_TX_CMD;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_TX_CMD, 0);
}
} else {
bus->cmd &= ~I2CD_M_TX_CMD;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_TX_CMD, 0);
}
/* No slave found */
@ -492,33 +483,38 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
aspeed_i2c_set_state(bus, I2CD_MACTIVE);
}
if (bus->cmd & I2CD_M_TX_CMD) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, M_TX_CMD)) {
aspeed_i2c_set_state(bus, I2CD_MTXD);
if (aspeed_i2c_bus_send(bus, pool_start)) {
bus->intr_status |= (I2CD_INTR_TX_NAK);
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
TX_NAK, 1);
i2c_end_transfer(bus->bus);
} else {
bus->intr_status |= I2CD_INTR_TX_ACK;
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
TX_ACK, 1);
}
bus->cmd &= ~I2CD_M_TX_CMD;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_TX_CMD, 0);
aspeed_i2c_set_state(bus, I2CD_MACTIVE);
}
if ((bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST)) &&
!(bus->intr_status & I2CD_INTR_RX_DONE)) {
if ((FIELD_EX32(bus->cmd, I2CD_CMD, M_RX_CMD) ||
FIELD_EX32(bus->cmd, I2CD_CMD, M_S_RX_CMD_LAST)) &&
!FIELD_EX32(bus->intr_status, I2CD_INTR_STS, RX_DONE)) {
aspeed_i2c_handle_rx_cmd(bus);
}
if (bus->cmd & I2CD_M_STOP_CMD) {
if (FIELD_EX32(bus->cmd, I2CD_CMD, M_STOP_CMD)) {
if (!(aspeed_i2c_get_state(bus) & I2CD_MACTIVE)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: abnormal stop\n", __func__);
bus->intr_status |= I2CD_INTR_ABNORMAL;
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
ABNORMAL, 1);
} else {
aspeed_i2c_set_state(bus, I2CD_MSTOP);
i2c_end_transfer(bus->bus);
bus->intr_status |= I2CD_INTR_NORMAL_STOP;
bus->intr_status = FIELD_DP32(bus->intr_status, I2CD_INTR_STS,
NORMAL_STOP, 1);
}
bus->cmd &= ~I2CD_M_STOP_CMD;
bus->cmd = FIELD_DP32(bus->cmd, I2CD_CMD, M_STOP_CMD, 0);
aspeed_i2c_set_state(bus, I2CD_IDLE);
}
}
@ -533,49 +529,50 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset,
trace_aspeed_i2c_bus_write(bus->id, offset, size, value);
switch (offset) {
case I2CD_FUN_CTRL_REG:
if (value & I2CD_SLAVE_EN) {
case A_I2CD_FUN_CTRL:
if (FIELD_EX32(value, I2CD_FUN_CTRL, SLAVE_EN)) {
qemu_log_mask(LOG_UNIMP, "%s: slave mode not implemented\n",
__func__);
break;
}
bus->ctrl = value & 0x0071C3FF;
break;
case I2CD_AC_TIMING_REG1:
case A_I2CD_AC_TIMING1:
bus->timing[0] = value & 0xFFFFF0F;
break;
case I2CD_AC_TIMING_REG2:
case A_I2CD_AC_TIMING2:
bus->timing[1] = value & 0x7;
break;
case I2CD_INTR_CTRL_REG:
case A_I2CD_INTR_CTRL:
bus->intr_ctrl = value & 0x7FFF;
break;
case I2CD_INTR_STS_REG:
handle_rx = (bus->intr_status & I2CD_INTR_RX_DONE) &&
(value & I2CD_INTR_RX_DONE);
case A_I2CD_INTR_STS:
handle_rx = FIELD_EX32(bus->intr_status, I2CD_INTR_STS, RX_DONE) &&
FIELD_EX32(value, I2CD_INTR_STS, RX_DONE);
bus->intr_status &= ~(value & 0x7FFF);
if (!bus->intr_status) {
bus->controller->intr_status &= ~(1 << bus->id);
qemu_irq_lower(aic->bus_get_irq(bus));
}
if (handle_rx && (bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST))) {
if (handle_rx && (FIELD_EX32(bus->cmd, I2CD_CMD, M_RX_CMD) ||
FIELD_EX32(bus->cmd, I2CD_CMD, M_S_RX_CMD_LAST))) {
aspeed_i2c_handle_rx_cmd(bus);
aspeed_i2c_bus_raise_interrupt(bus);
}
break;
case I2CD_DEV_ADDR_REG:
case A_I2CD_DEV_ADDR:
qemu_log_mask(LOG_UNIMP, "%s: slave mode not implemented\n",
__func__);
break;
case I2CD_POOL_CTRL_REG:
case A_I2CD_POOL_CTRL:
bus->pool_ctrl &= ~0xffffff;
bus->pool_ctrl |= (value & 0xffffff);
break;
case I2CD_BYTE_BUF_REG:
bus->buf = (value & I2CD_BYTE_BUF_TX_MASK) << I2CD_BYTE_BUF_TX_SHIFT;
case A_I2CD_BYTE_BUF:
bus->buf = FIELD_DP32(bus->buf, I2CD_BYTE_BUF, TX_BUF, value);
break;
case I2CD_CMD_REG:
case A_I2CD_CMD:
if (!aspeed_i2c_bus_is_enabled(bus)) {
break;
}
@ -587,7 +584,8 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset,
}
if (!aic->has_dma &&
value & (I2CD_RX_DMA_ENABLE | I2CD_TX_DMA_ENABLE)) {
(FIELD_EX32(value, I2CD_CMD, RX_DMA_EN) ||
FIELD_EX32(value, I2CD_CMD, TX_DMA_EN))) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: No DMA support\n", __func__);
break;
}
@ -595,7 +593,7 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset,
aspeed_i2c_bus_handle_cmd(bus, value);
aspeed_i2c_bus_raise_interrupt(bus);
break;
case I2CD_DMA_ADDR:
case A_I2CD_DMA_ADDR:
if (!aic->has_dma) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: No DMA support\n", __func__);
break;
@ -604,7 +602,7 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset,
bus->dma_addr = value & 0x3ffffffc;
break;
case I2CD_DMA_LEN:
case A_I2CD_DMA_LEN:
if (!aic->has_dma) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: No DMA support\n", __func__);
break;
@ -628,9 +626,9 @@ static uint64_t aspeed_i2c_ctrl_read(void *opaque, hwaddr offset,
AspeedI2CState *s = opaque;
switch (offset) {
case I2C_CTRL_STATUS:
case A_I2C_CTRL_STATUS:
return s->intr_status;
case I2C_CTRL_GLOBAL:
case A_I2C_CTRL_GLOBAL:
return s->ctrl_global;
default:
qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIx "\n",
@ -647,10 +645,10 @@ static void aspeed_i2c_ctrl_write(void *opaque, hwaddr offset,
AspeedI2CState *s = opaque;
switch (offset) {
case I2C_CTRL_GLOBAL:
case A_I2C_CTRL_GLOBAL:
s->ctrl_global = value;
break;
case I2C_CTRL_STATUS:
case A_I2C_CTRL_STATUS:
default:
qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIx "\n",
__func__, offset);
@ -919,9 +917,10 @@ static qemu_irq aspeed_2400_i2c_bus_get_irq(AspeedI2CBus *bus)
static uint8_t *aspeed_2400_i2c_bus_pool_base(AspeedI2CBus *bus)
{
uint8_t *pool_page =
&bus->controller->pool[I2CD_POOL_PAGE_SEL(bus->ctrl) * 0x100];
&bus->controller->pool[FIELD_EX32(bus->ctrl, I2CD_FUN_CTRL,
POOL_PAGE_SEL) * 0x100];
return &pool_page[I2CD_POOL_OFFSET(bus->pool_ctrl)];
return &pool_page[FIELD_EX32(bus->pool_ctrl, I2CD_POOL_CTRL, OFFSET)];
}
static void aspeed_2400_i2c_class_init(ObjectClass *klass, void *data)