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Diffstat (limited to 'hw/i2c/pmbus_device.c')
-rw-r--r--hw/i2c/pmbus_device.c237
1 files changed, 227 insertions, 10 deletions
diff --git a/hw/i2c/pmbus_device.c b/hw/i2c/pmbus_device.c
index cef51663d0..1b978e588f 100644
--- a/hw/i2c/pmbus_device.c
+++ b/hw/i2c/pmbus_device.c
@@ -102,7 +102,6 @@ void pmbus_send_string(PMBusDevice *pmdev, const char *data)
}
size_t len = strlen(data);
- g_assert(len > 0);
g_assert(len + pmdev->out_buf_len < SMBUS_DATA_MAX_LEN);
pmdev->out_buf[len + pmdev->out_buf_len] = len;
@@ -112,6 +111,35 @@ void pmbus_send_string(PMBusDevice *pmdev, const char *data)
pmdev->out_buf_len += len + 1;
}
+uint8_t pmbus_receive_block(PMBusDevice *pmdev, uint8_t *dest, size_t len)
+{
+ /* dest may contain data from previous writes */
+ memset(dest, 0, len);
+
+ /* Exclude command code from return value */
+ pmdev->in_buf++;
+ pmdev->in_buf_len--;
+
+ /* The byte after the command code denotes the length */
+ uint8_t sent_len = pmdev->in_buf[0];
+
+ if (sent_len != pmdev->in_buf_len - 1) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: length mismatch. Expected %d bytes, got %d bytes\n",
+ __func__, sent_len, pmdev->in_buf_len - 1);
+ }
+
+ /* exclude length byte */
+ pmdev->in_buf++;
+ pmdev->in_buf_len--;
+
+ if (pmdev->in_buf_len < len) {
+ len = pmdev->in_buf_len;
+ }
+ memcpy(dest, pmdev->in_buf, len);
+ return len;
+}
+
static uint64_t pmbus_receive_uint(PMBusDevice *pmdev)
{
@@ -472,6 +500,54 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
}
break;
+ case PMBUS_FAN_CONFIG_1_2: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].fan_config_1_2);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_1: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].fan_command_1);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_2: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].fan_command_2);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_FAN_CONFIG_3_4: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].fan_config_3_4);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_3: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].fan_command_3);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_4: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].fan_command_4);
+ } else {
+ goto passthough;
+ }
+ break;
+
case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmbus_send16(pmdev, pmdev->pages[index].vout_ov_fault_limit);
@@ -782,6 +858,22 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
pmbus_send8(pmdev, pmdev->pages[index].status_mfr_specific);
break;
+ case PMBUS_STATUS_FANS_1_2: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].status_fans_1_2);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_STATUS_FANS_3_4: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].status_fans_3_4);
+ } else {
+ goto passthough;
+ }
+ break;
+
case PMBUS_READ_EIN: /* Read-Only block 5 bytes */
if (pmdev->pages[index].page_flags & PB_HAS_EIN) {
pmbus_send(pmdev, pmdev->pages[index].read_ein, 5);
@@ -814,6 +906,14 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
}
break;
+ case PMBUS_READ_VCAP: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_VCAP) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_vcap);
+ } else {
+ goto passthough;
+ }
+ break;
+
case PMBUS_READ_VOUT: /* Read-Only word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmbus_send16(pmdev, pmdev->pages[index].read_vout);
@@ -854,6 +954,54 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
}
break;
+ case PMBUS_READ_FAN_SPEED_1: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_1);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_READ_FAN_SPEED_2: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_2);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_READ_FAN_SPEED_3: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_3);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_READ_FAN_SPEED_4: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_fan_speed_4);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_READ_DUTY_CYCLE: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_duty_cycle);
+ } else {
+ goto passthough;
+ }
+ break;
+
+ case PMBUS_READ_FREQUENCY: /* Read-Only word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send16(pmdev, pmdev->pages[index].read_frequency);
+ } else {
+ goto passthough;
+ }
+ break;
+
case PMBUS_READ_POUT: /* Read-Only word */
if (pmdev->pages[index].page_flags & PB_HAS_POUT) {
pmbus_send16(pmdev, pmdev->pages[index].read_pout);
@@ -1096,12 +1244,26 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
pmdev->in_buf = buf;
pmdev->code = buf[0]; /* PMBus command code */
+
+ if (pmdev->code == PMBUS_CLEAR_FAULTS) {
+ pmbus_clear_faults(pmdev);
+ }
+
if (len == 1) { /* Single length writes are command codes only */
return 0;
}
if (pmdev->code == PMBUS_PAGE) {
pmdev->page = pmbus_receive8(pmdev);
+
+ if (pmdev->page > pmdev->num_pages - 1 && pmdev->page != PB_ALL_PAGES) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: page %u is out of range\n",
+ __func__, pmdev->page);
+ pmdev->page = 0; /* undefined behaviour - reset to page 0 */
+ pmbus_cml_error(pmdev);
+ return PMBUS_ERR_BYTE;
+ }
return 0;
}
@@ -1115,15 +1277,6 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
return 0;
}
- if (pmdev->page > pmdev->num_pages - 1) {
- qemu_log_mask(LOG_GUEST_ERROR,
- "%s: page %u is out of range\n",
- __func__, pmdev->page);
- pmdev->page = 0; /* undefined behaviour - reset to page 0 */
- pmbus_cml_error(pmdev);
- return PMBUS_ERR_BYTE;
- }
-
index = pmdev->page;
switch (pmdev->code) {
@@ -1277,6 +1430,54 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
}
break;
+ case PMBUS_FAN_CONFIG_1_2: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_config_1_2 = pmbus_receive8(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_1: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_command_1 = pmbus_receive16(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_2: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_command_2 = pmbus_receive16(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_FAN_CONFIG_3_4: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_config_3_4 = pmbus_receive8(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_3: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_command_3 = pmbus_receive16(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_FAN_COMMAND_4: /* R/W word */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmdev->pages[index].fan_command_4 = pmbus_receive16(pmdev);
+ } else {
+ goto passthrough;
+ }
+ break;
+
case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_ov_fault_limit = pmbus_receive16(pmdev);
@@ -1582,6 +1783,22 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
pmdev->pages[index].status_mfr_specific = pmbus_receive8(pmdev);
break;
+ case PMBUS_STATUS_FANS_1_2: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].status_fans_1_2);
+ } else {
+ goto passthrough;
+ }
+ break;
+
+ case PMBUS_STATUS_FANS_3_4: /* R/W byte */
+ if (pmdev->pages[index].page_flags & PB_HAS_FAN) {
+ pmbus_send8(pmdev, pmdev->pages[index].status_fans_3_4);
+ } else {
+ goto passthrough;
+ }
+ break;
+
case PMBUS_PAGE_PLUS_READ: /* Block Read-only */
case PMBUS_CAPABILITY: /* Read-Only byte */
case PMBUS_COEFFICIENTS: /* Read-only block 5 bytes */
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-21 07:04:57 +0000