--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <linux/bug.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/vmalloc.h>
+#include "qed.h"
+#include "qed_hw.h"
+#include "qed_mcp.h"
+#include "qed_reg_addr.h"
+
+#define TLV_TYPE(p) (p[0])
+#define TLV_LENGTH(p) (p[1])
+#define TLV_FLAGS(p) (p[3])
+
+#define QED_TLV_DATA_MAX (14)
+struct qed_tlv_parsed_buf {
+ /* To be filled with the address to set in Value field */
+ void *p_val;
+
+ /* To be used internally in case the value has to be modified */
+ u8 data[QED_TLV_DATA_MAX];
+};
+
+static int qed_mfw_get_tlv_group(u8 tlv_type, u8 *tlv_group)
+{
+ switch (tlv_type) {
+ case DRV_TLV_FEATURE_FLAGS:
+ case DRV_TLV_LOCAL_ADMIN_ADDR:
+ case DRV_TLV_ADDITIONAL_MAC_ADDR_1:
+ case DRV_TLV_ADDITIONAL_MAC_ADDR_2:
+ case DRV_TLV_OS_DRIVER_STATES:
+ case DRV_TLV_PXE_BOOT_PROGRESS:
+ case DRV_TLV_RX_FRAMES_RECEIVED:
+ case DRV_TLV_RX_BYTES_RECEIVED:
+ case DRV_TLV_TX_FRAMES_SENT:
+ case DRV_TLV_TX_BYTES_SENT:
+ case DRV_TLV_NPIV_ENABLED:
+ case DRV_TLV_PCIE_BUS_RX_UTILIZATION:
+ case DRV_TLV_PCIE_BUS_TX_UTILIZATION:
+ case DRV_TLV_DEVICE_CPU_CORES_UTILIZATION:
+ case DRV_TLV_LAST_VALID_DCC_TLV_RECEIVED:
+ case DRV_TLV_NCSI_RX_BYTES_RECEIVED:
+ case DRV_TLV_NCSI_TX_BYTES_SENT:
+ *tlv_group |= QED_MFW_TLV_GENERIC;
+ break;
+ case DRV_TLV_LSO_MAX_OFFLOAD_SIZE:
+ case DRV_TLV_LSO_MIN_SEGMENT_COUNT:
+ case DRV_TLV_PROMISCUOUS_MODE:
+ case DRV_TLV_TX_DESCRIPTORS_QUEUE_SIZE:
+ case DRV_TLV_RX_DESCRIPTORS_QUEUE_SIZE:
+ case DRV_TLV_NUM_OF_NET_QUEUE_VMQ_CFG:
+ case DRV_TLV_NUM_OFFLOADED_CONNECTIONS_TCP_IPV4:
+ case DRV_TLV_NUM_OFFLOADED_CONNECTIONS_TCP_IPV6:
+ case DRV_TLV_TX_DESCRIPTOR_QUEUE_AVG_DEPTH:
+ case DRV_TLV_RX_DESCRIPTORS_QUEUE_AVG_DEPTH:
+ case DRV_TLV_IOV_OFFLOAD:
+ case DRV_TLV_TX_QUEUES_EMPTY:
+ case DRV_TLV_RX_QUEUES_EMPTY:
+ case DRV_TLV_TX_QUEUES_FULL:
+ case DRV_TLV_RX_QUEUES_FULL:
+ *tlv_group |= QED_MFW_TLV_ETH;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Returns size of the data buffer or, -1 in case TLV data is not available. */
+static int
+qed_mfw_get_gen_tlv_value(struct qed_drv_tlv_hdr *p_tlv,
+ struct qed_mfw_tlv_generic *p_drv_buf,
+ struct qed_tlv_parsed_buf *p_buf)
+{
+ switch (p_tlv->tlv_type) {
+ case DRV_TLV_FEATURE_FLAGS:
+ if (p_drv_buf->flags.b_set) {
+ memset(p_buf->data, 0, sizeof(u8) * QED_TLV_DATA_MAX);
+ p_buf->data[0] = p_drv_buf->flags.ipv4_csum_offload ?
+ 1 : 0;
+ p_buf->data[0] |= (p_drv_buf->flags.lso_supported ?
+ 1 : 0) << 1;
+ p_buf->p_val = p_buf->data;
+ return QED_MFW_TLV_FLAGS_SIZE;
+ }
+ break;
+
+ case DRV_TLV_LOCAL_ADMIN_ADDR:
+ case DRV_TLV_ADDITIONAL_MAC_ADDR_1:
+ case DRV_TLV_ADDITIONAL_MAC_ADDR_2:
+ {
+ int idx = p_tlv->tlv_type - DRV_TLV_LOCAL_ADMIN_ADDR;
+
+ if (p_drv_buf->mac_set[idx]) {
+ p_buf->p_val = p_drv_buf->mac[idx];
+ return ETH_ALEN;
+ }
+ break;
+ }
+
+ case DRV_TLV_RX_FRAMES_RECEIVED:
+ if (p_drv_buf->rx_frames_set) {
+ p_buf->p_val = &p_drv_buf->rx_frames;
+ return sizeof(p_drv_buf->rx_frames);
+ }
+ break;
+ case DRV_TLV_RX_BYTES_RECEIVED:
+ if (p_drv_buf->rx_bytes_set) {
+ p_buf->p_val = &p_drv_buf->rx_bytes;
+ return sizeof(p_drv_buf->rx_bytes);
+ }
+ break;
+ case DRV_TLV_TX_FRAMES_SENT:
+ if (p_drv_buf->tx_frames_set) {
+ p_buf->p_val = &p_drv_buf->tx_frames;
+ return sizeof(p_drv_buf->tx_frames);
+ }
+ break;
+ case DRV_TLV_TX_BYTES_SENT:
+ if (p_drv_buf->tx_bytes_set) {
+ p_buf->p_val = &p_drv_buf->tx_bytes;
+ return sizeof(p_drv_buf->tx_bytes);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return -1;
+}
+
+static int
+qed_mfw_get_eth_tlv_value(struct qed_drv_tlv_hdr *p_tlv,
+ struct qed_mfw_tlv_eth *p_drv_buf,
+ struct qed_tlv_parsed_buf *p_buf)
+{
+ switch (p_tlv->tlv_type) {
+ case DRV_TLV_LSO_MAX_OFFLOAD_SIZE:
+ if (p_drv_buf->lso_maxoff_size_set) {
+ p_buf->p_val = &p_drv_buf->lso_maxoff_size;
+ return sizeof(p_drv_buf->lso_maxoff_size);
+ }
+ break;
+ case DRV_TLV_LSO_MIN_SEGMENT_COUNT:
+ if (p_drv_buf->lso_minseg_size_set) {
+ p_buf->p_val = &p_drv_buf->lso_minseg_size;
+ return sizeof(p_drv_buf->lso_minseg_size);
+ }
+ break;
+ case DRV_TLV_PROMISCUOUS_MODE:
+ if (p_drv_buf->prom_mode_set) {
+ p_buf->p_val = &p_drv_buf->prom_mode;
+ return sizeof(p_drv_buf->prom_mode);
+ }
+ break;
+ case DRV_TLV_TX_DESCRIPTORS_QUEUE_SIZE:
+ if (p_drv_buf->tx_descr_size_set) {
+ p_buf->p_val = &p_drv_buf->tx_descr_size;
+ return sizeof(p_drv_buf->tx_descr_size);
+ }
+ break;
+ case DRV_TLV_RX_DESCRIPTORS_QUEUE_SIZE:
+ if (p_drv_buf->rx_descr_size_set) {
+ p_buf->p_val = &p_drv_buf->rx_descr_size;
+ return sizeof(p_drv_buf->rx_descr_size);
+ }
+ break;
+ case DRV_TLV_NUM_OF_NET_QUEUE_VMQ_CFG:
+ if (p_drv_buf->netq_count_set) {
+ p_buf->p_val = &p_drv_buf->netq_count;
+ return sizeof(p_drv_buf->netq_count);
+ }
+ break;
+ case DRV_TLV_NUM_OFFLOADED_CONNECTIONS_TCP_IPV4:
+ if (p_drv_buf->tcp4_offloads_set) {
+ p_buf->p_val = &p_drv_buf->tcp4_offloads;
+ return sizeof(p_drv_buf->tcp4_offloads);
+ }
+ break;
+ case DRV_TLV_NUM_OFFLOADED_CONNECTIONS_TCP_IPV6:
+ if (p_drv_buf->tcp6_offloads_set) {
+ p_buf->p_val = &p_drv_buf->tcp6_offloads;
+ return sizeof(p_drv_buf->tcp6_offloads);
+ }
+ break;
+ case DRV_TLV_TX_DESCRIPTOR_QUEUE_AVG_DEPTH:
+ if (p_drv_buf->tx_descr_qdepth_set) {
+ p_buf->p_val = &p_drv_buf->tx_descr_qdepth;
+ return sizeof(p_drv_buf->tx_descr_qdepth);
+ }
+ break;
+ case DRV_TLV_RX_DESCRIPTORS_QUEUE_AVG_DEPTH:
+ if (p_drv_buf->rx_descr_qdepth_set) {
+ p_buf->p_val = &p_drv_buf->rx_descr_qdepth;
+ return sizeof(p_drv_buf->rx_descr_qdepth);
+ }
+ break;
+ case DRV_TLV_IOV_OFFLOAD:
+ if (p_drv_buf->iov_offload_set) {
+ p_buf->p_val = &p_drv_buf->iov_offload;
+ return sizeof(p_drv_buf->iov_offload);
+ }
+ break;
+ case DRV_TLV_TX_QUEUES_EMPTY:
+ if (p_drv_buf->txqs_empty_set) {
+ p_buf->p_val = &p_drv_buf->txqs_empty;
+ return sizeof(p_drv_buf->txqs_empty);
+ }
+ break;
+ case DRV_TLV_RX_QUEUES_EMPTY:
+ if (p_drv_buf->rxqs_empty_set) {
+ p_buf->p_val = &p_drv_buf->rxqs_empty;
+ return sizeof(p_drv_buf->rxqs_empty);
+ }
+ break;
+ case DRV_TLV_TX_QUEUES_FULL:
+ if (p_drv_buf->num_txqs_full_set) {
+ p_buf->p_val = &p_drv_buf->num_txqs_full;
+ return sizeof(p_drv_buf->num_txqs_full);
+ }
+ break;
+ case DRV_TLV_RX_QUEUES_FULL:
+ if (p_drv_buf->num_rxqs_full_set) {
+ p_buf->p_val = &p_drv_buf->num_rxqs_full;
+ return sizeof(p_drv_buf->num_rxqs_full);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return -1;
+}
+
+static int qed_mfw_update_tlvs(struct qed_hwfn *p_hwfn,
+ u8 tlv_group, u8 *p_mfw_buf, u32 size)
+{
+ union qed_mfw_tlv_data *p_tlv_data;
+ struct qed_tlv_parsed_buf buffer;
+ struct qed_drv_tlv_hdr tlv;
+ int len = 0;
+ u32 offset;
+ u8 *p_tlv;
+
+ p_tlv_data = vzalloc(sizeof(*p_tlv_data));
+ if (!p_tlv_data)
+ return -ENOMEM;
+
+ if (qed_mfw_fill_tlv_data(p_hwfn, tlv_group, p_tlv_data)) {
+ vfree(p_tlv_data);
+ return -EINVAL;
+ }
+
+ memset(&tlv, 0, sizeof(tlv));
+ for (offset = 0; offset < size;
+ offset += sizeof(tlv) + sizeof(u32) * tlv.tlv_length) {
+ p_tlv = &p_mfw_buf[offset];
+ tlv.tlv_type = TLV_TYPE(p_tlv);
+ tlv.tlv_length = TLV_LENGTH(p_tlv);
+ tlv.tlv_flags = TLV_FLAGS(p_tlv);
+
+ DP_VERBOSE(p_hwfn, QED_MSG_SP,
+ "Type %d length = %d flags = 0x%x\n", tlv.tlv_type,
+ tlv.tlv_length, tlv.tlv_flags);
+
+ if (tlv_group == QED_MFW_TLV_GENERIC)
+ len = qed_mfw_get_gen_tlv_value(&tlv,
+ &p_tlv_data->generic,
+ &buffer);
+ else if (tlv_group == QED_MFW_TLV_ETH)
+ len = qed_mfw_get_eth_tlv_value(&tlv,
+ &p_tlv_data->eth,
+ &buffer);
+
+ if (len > 0) {
+ WARN(len > 4 * tlv.tlv_length,
+ "Incorrect MFW TLV length %d, it shouldn't be greater than %d\n",
+ len, 4 * tlv.tlv_length);
+ len = min_t(int, len, 4 * tlv.tlv_length);
+ tlv.tlv_flags |= QED_DRV_TLV_FLAGS_CHANGED;
+ TLV_FLAGS(p_tlv) = tlv.tlv_flags;
+ memcpy(p_mfw_buf + offset + sizeof(tlv),
+ buffer.p_val, len);
+ }
+ }
+
+ vfree(p_tlv_data);
+
+ return 0;
+}
+
+int qed_mfw_process_tlv_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+{
+ u32 addr, size, offset, resp, param, val, global_offsize, global_addr;
+ u8 tlv_group = 0, id, *p_mfw_buf = NULL, *p_temp;
+ struct qed_drv_tlv_hdr tlv;
+ int rc;
+
+ addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
+ PUBLIC_GLOBAL);
+ global_offsize = qed_rd(p_hwfn, p_ptt, addr);
+ global_addr = SECTION_ADDR(global_offsize, 0);
+ addr = global_addr + offsetof(struct public_global, data_ptr);
+ addr = qed_rd(p_hwfn, p_ptt, addr);
+ size = qed_rd(p_hwfn, p_ptt, global_addr +
+ offsetof(struct public_global, data_size));
+
+ if (!size) {
+ DP_NOTICE(p_hwfn, "Invalid TLV req size = %d\n", size);
+ goto drv_done;
+ }
+
+ p_mfw_buf = vzalloc(size);
+ if (!p_mfw_buf) {
+ DP_NOTICE(p_hwfn, "Failed allocate memory for p_mfw_buf\n");
+ goto drv_done;
+ }
+
+ /* Read the TLV request to local buffer. MFW represents the TLV in
+ * little endian format and mcp returns it bigendian format. Hence
+ * driver need to convert data to little endian first and then do the
+ * memcpy (casting) to preserve the MFW TLV format in the driver buffer.
+ *
+ */
+ for (offset = 0; offset < size; offset += sizeof(u32)) {
+ val = qed_rd(p_hwfn, p_ptt, addr + offset);
+ val = be32_to_cpu(val);
+ memcpy(&p_mfw_buf[offset], &val, sizeof(u32));
+ }
+
+ /* Parse the headers to enumerate the requested TLV groups */
+ for (offset = 0; offset < size;
+ offset += sizeof(tlv) + sizeof(u32) * tlv.tlv_length) {
+ p_temp = &p_mfw_buf[offset];
+ tlv.tlv_type = TLV_TYPE(p_temp);
+ tlv.tlv_length = TLV_LENGTH(p_temp);
+ if (qed_mfw_get_tlv_group(tlv.tlv_type, &tlv_group))
+ DP_VERBOSE(p_hwfn, NETIF_MSG_DRV,
+ "Un recognized TLV %d\n", tlv.tlv_type);
+ }
+
+ /* Sanitize the TLV groups according to personality */
+ if ((tlv_group & QED_MFW_TLV_ETH) && !QED_IS_L2_PERSONALITY(p_hwfn)) {
+ DP_VERBOSE(p_hwfn, QED_MSG_SP,
+ "Skipping L2 TLVs for non-L2 function\n");
+ tlv_group &= ~QED_MFW_TLV_ETH;
+ }
+
+ /* Update the TLV values in the local buffer */
+ for (id = QED_MFW_TLV_GENERIC; id < QED_MFW_TLV_MAX; id <<= 1) {
+ if (tlv_group & id)
+ if (qed_mfw_update_tlvs(p_hwfn, id, p_mfw_buf, size))
+ goto drv_done;
+ }
+
+ /* Write the TLV data to shared memory. The stream of 4 bytes first need
+ * to be mem-copied to u32 element to make it as LSB format. And then
+ * converted to big endian as required by mcp-write.
+ */
+ for (offset = 0; offset < size; offset += sizeof(u32)) {
+ memcpy(&val, &p_mfw_buf[offset], sizeof(u32));
+ val = cpu_to_be32(val);
+ qed_wr(p_hwfn, p_ptt, addr + offset, val);
+ }
+
+drv_done:
+ rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_GET_TLV_DONE, 0, &resp,
+ ¶m);
+
+ vfree(p_mfw_buf);
+
+ return rc;
+}
projects / platform / kernel / linux-rpi.git / commitdiff