[PATCH 02/15] habanalabs/gaudi: add NIC firmware-related definitions

Oded Gabbay
2020-09-10T19:05:15Z

From: Omer Shpigelman <oshpigelman@habana.ai>

Add new structures and messages that the driver use to interact with the
firmware to receive information and events (errors) about GAUDI's NIC.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
.../misc/habanalabs/include/common/cpucp_if.h | 34 ++++++++++++++++---
.../habanalabs/include/gaudi/gaudi_fw_if.h | 24 +++++++++++++
2 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/drivers/misc/habanalabs/include/common/cpucp_if.h b/drivers/misc/habanalabs/include/common/cpucp_if.h
index dcde440427b4..ace746bb206e 100644
--- a/drivers/misc/habanalabs/include/common/cpucp_if.h
+++ b/drivers/misc/habanalabs/include/common/cpucp_if.h
@@ -9,6 +9,7 @@
#define CPUCP_IF_H

#include <linux/types.h>
+#include <linux/if_ether.h>

/*
* EVENT QUEUE
@@ -199,6 +200,11 @@ enum pq_init_status {
* CpuCP to write to the structure, to prevent data corruption in case of
* mismatched driver/FW versions.
*
+ * CPUCP_PACKET_NIC_INFO_GET -
+ * Fetch information from the device regarding the NIC. the host's driver
+ * passes the max size it allows the CpuCP to write to the structure, to
+ * prevent data corruption in case of mismatched driver/FW versions.
+ *
* CPUCP_PACKET_TEMPERATURE_SET -
* Set the value of the offset property of a specified thermal sensor.
* The packet's arguments specify the desired sensor and the field to
@@ -238,12 +244,12 @@ enum cpucp_packet_id {
CPUCP_PACKET_MAX_POWER_GET, /* sysfs */
CPUCP_PACKET_MAX_POWER_SET, /* sysfs */
CPUCP_PACKET_EEPROM_DATA_GET, /* sysfs */
- CPUCP_RESERVED,
+ CPUCP_PACKET_NIC_INFO_GET, /* internal */
CPUCP_PACKET_TEMPERATURE_SET, /* sysfs */
CPUCP_PACKET_VOLTAGE_SET, /* sysfs */
CPUCP_PACKET_CURRENT_SET, /* sysfs */
- CPUCP_PACKET_PCIE_THROUGHPUT_GET, /* internal */
- CPUCP_PACKET_PCIE_REPLAY_CNT_GET, /* internal */
+ CPUCP_PACKET_PCIE_THROUGHPUT_GET, /* internal */
+ CPUCP_PACKET_PCIE_REPLAY_CNT_GET, /* internal */
CPUCP_PACKET_TOTAL_ENERGY_GET, /* internal */
};

@@ -288,7 +294,7 @@ struct cpucp_packet {
/* For led set */
__le32 led_index;

- /* For get CpuCP info/EEPROM data */
+ /* For get CpuCP info/EEPROM data/NIC info */
__le32 data_max_size;
};

@@ -367,6 +373,12 @@ struct eq_generic_event {
#define CARD_NAME_MAX_LEN 16
#define VERSION_MAX_LEN 128
#define CPUCP_MAX_SENSORS 128
+#define CPUCP_MAX_NICS 128
+#define CPUCP_LANES_PER_NIC 4
+#define CPUCP_NIC_QSFP_EEPROM_MAX_LEN 1024
+#define CPUCP_MAX_NIC_LANES (CPUCP_MAX_NICS * CPUCP_LANES_PER_NIC)
+#define CPUCP_NIC_MASK_ARR_LEN ((CPUCP_MAX_NICS + 63) / 64)
+#define CPUCP_NIC_POLARITY_ARR_LEN ((CPUCP_MAX_NIC_LANES + 63) / 64)

struct cpucp_sensor {
__le32 type;
@@ -415,4 +427,18 @@ struct cpucp_info {
char card_name[CARD_NAME_MAX_LEN];
};

+struct cpucp_mac_addr {
+ __u8 mac_addr[ETH_ALEN];
+};
+
+struct cpucp_nic_info {
+ struct cpucp_mac_addr mac_addrs[CPUCP_MAX_NICS];
+ __le64 link_mask[CPUCP_NIC_MASK_ARR_LEN];
+ __le64 pol_tx_mask[CPUCP_NIC_POLARITY_ARR_LEN];
+ __le64 pol_rx_mask[CPUCP_NIC_POLARITY_ARR_LEN];
+ __le64 link_ext_mask[CPUCP_NIC_MASK_ARR_LEN];
+ __u8 qsfp_eeprom[CPUCP_NIC_QSFP_EEPROM_MAX_LEN];
+ __le64 auto_neg_mask[CPUCP_NIC_MASK_ARR_LEN];
+};
+
#endif /* CPUCP_IF_H */
diff --git a/drivers/misc/habanalabs/include/gaudi/gaudi_fw_if.h b/drivers/misc/habanalabs/include/gaudi/gaudi_fw_if.h
index 8aadc6357da1..d61a4c87b765 100644
--- a/drivers/misc/habanalabs/include/gaudi/gaudi_fw_if.h
+++ b/drivers/misc/habanalabs/include/gaudi/gaudi_fw_if.h
@@ -8,6 +8,8 @@
#ifndef GAUDI_FW_IF_H
#define GAUDI_FW_IF_H

+#include <linux/types.h>
+
#define GAUDI_EVENT_QUEUE_MSI_IDX 8
#define GAUDI_NIC_PORT1_MSI_IDX 10
#define GAUDI_NIC_PORT3_MSI_IDX 12
@@ -31,6 +33,28 @@ enum gaudi_pll_index {
IF_PLL
};

+enum gaudi_nic_axi_error {
+ RXB,
+ RXE,
+ TXS,
+ TXE,
+ QPC_RESP,
+ NON_AXI_ERR,
+};
+
+/*
+ * struct eq_nic_sei_event - describes an AXI error cause.
+ * @axi_error_cause: one of the events defined in enum gaudi_nic_axi_error.
+ * @id: can be either 0 or 1, to further describe unit with interrupt cause
+ * (i.e. TXE0 or TXE1).
+ * @pad[6]: padding structure to 64bit.
+ */
+struct eq_nic_sei_event {
+ __u8 axi_error_cause;
+ __u8 id;
+ __u8 pad[6];
+};
+
#define GAUDI_PLL_FREQ_LOW 200000000 /* 200 MHz */

#endif /* GAUDI_FW_IF_H */
--
2.17.1