/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright (c) 2015-2019 Amazon.com, Inc. or its affiliates.
+ * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
* All rights reserved.
*/
#include "ena_plat.h"
-#define ENA_MAX_NUM_IO_QUEUES 128U
+#define ENA_MAX_NUM_IO_QUEUES 128U
/* We need to queues for each IO (on for Tx and one for Rx) */
-#define ENA_TOTAL_NUM_QUEUES (2 * (ENA_MAX_NUM_IO_QUEUES))
+#define ENA_TOTAL_NUM_QUEUES (2 * (ENA_MAX_NUM_IO_QUEUES))
#define ENA_MAX_HANDLERS 256
#define ADMIN_CQ_SIZE(depth) ((depth) * sizeof(struct ena_admin_acq_entry))
#define ADMIN_AENQ_SIZE(depth) ((depth) * sizeof(struct ena_admin_aenq_entry))
+#define ENA_CDESC_RING_SIZE_ALIGNMENT (1 << 12) /* 4K */
+
/*****************************************************************************/
/*****************************************************************************/
/* ENA adaptive interrupt moderation settings */
-#define ENA_INTR_LOWEST_USECS (0)
-#define ENA_INTR_LOWEST_PKTS (3)
-#define ENA_INTR_LOWEST_BYTES (2 * 1524)
-
-#define ENA_INTR_LOW_USECS (32)
-#define ENA_INTR_LOW_PKTS (12)
-#define ENA_INTR_LOW_BYTES (16 * 1024)
-
-#define ENA_INTR_MID_USECS (80)
-#define ENA_INTR_MID_PKTS (48)
-#define ENA_INTR_MID_BYTES (64 * 1024)
+#define ENA_INTR_INITIAL_TX_INTERVAL_USECS ENA_INTR_INITIAL_TX_INTERVAL_USECS_PLAT
+#define ENA_INTR_INITIAL_RX_INTERVAL_USECS 0
+#define ENA_DEFAULT_INTR_DELAY_RESOLUTION 1
-#define ENA_INTR_HIGH_USECS (128)
-#define ENA_INTR_HIGH_PKTS (96)
-#define ENA_INTR_HIGH_BYTES (128 * 1024)
+#define ENA_HASH_KEY_SIZE 40
-#define ENA_INTR_HIGHEST_USECS (192)
-#define ENA_INTR_HIGHEST_PKTS (128)
-#define ENA_INTR_HIGHEST_BYTES (192 * 1024)
+#define ENA_HW_HINTS_NO_TIMEOUT 0xFFFF
-#define ENA_INTR_INITIAL_TX_INTERVAL_USECS 196
-#define ENA_INTR_INITIAL_RX_INTERVAL_USECS 4
-#define ENA_INTR_DELAY_OLD_VALUE_WEIGHT 6
-#define ENA_INTR_DELAY_NEW_VALUE_WEIGHT 4
-#define ENA_INTR_MODER_LEVEL_STRIDE 1
-#define ENA_INTR_BYTE_COUNT_NOT_SUPPORTED 0xFFFFFF
-
-#define ENA_HW_HINTS_NO_TIMEOUT 0xFFFF
-
-#define ENA_FEATURE_MAX_QUEUE_EXT_VER 1
-
-enum ena_intr_moder_level {
- ENA_INTR_MODER_LOWEST = 0,
- ENA_INTR_MODER_LOW,
- ENA_INTR_MODER_MID,
- ENA_INTR_MODER_HIGH,
- ENA_INTR_MODER_HIGHEST,
- ENA_INTR_MAX_NUM_OF_LEVELS,
-};
+#define ENA_FEATURE_MAX_QUEUE_EXT_VER 1
struct ena_llq_configurations {
enum ena_admin_llq_header_location llq_header_location;
u16 llq_ring_entry_size_value;
};
-struct ena_intr_moder_entry {
- unsigned int intr_moder_interval;
- unsigned int pkts_per_interval;
- unsigned int bytes_per_interval;
-};
-
enum queue_direction {
ENA_COM_IO_QUEUE_DIRECTION_TX,
ENA_COM_IO_QUEUE_DIRECTION_RX
u16 descs_num_before_header;
u16 descs_per_entry;
u16 max_entries_in_tx_burst;
+ bool disable_meta_caching;
};
struct ena_com_io_cq {
enum queue_direction direction;
enum ena_admin_placement_policy_type mem_queue_type;
+ bool disable_meta_caching;
+
u32 msix_vector;
struct ena_com_tx_meta cached_tx_meta;
struct ena_com_llq_info llq_info;
};
struct ena_com_stats_admin {
- u32 aborted_cmd;
- u32 submitted_cmd;
- u32 completed_cmd;
- u32 out_of_space;
- u32 no_completion;
+ u64 aborted_cmd;
+ u64 submitted_cmd;
+ u64 completed_cmd;
+ u64 out_of_space;
+ u64 no_completion;
};
struct ena_com_admin_queue {
void *q_dmadev;
void *bus;
+ struct ena_com_dev *ena_dev;
ena_spinlock_t q_lock; /* spinlock for the admin queue */
struct ena_comp_ctx *comp_ctx;
ena_mem_handle_t host_info_dma_handle;
};
-struct ena_extra_properties_strings {
- u8 *virt_addr;
- dma_addr_t dma_addr;
- ena_mem_handle_t dma_handle;
- u32 size;
-};
-
/* Each ena_dev is a PCI function. */
struct ena_com_dev {
struct ena_com_admin_queue admin_queue;
void __iomem *mem_bar;
void *dmadev;
void *bus;
+ ena_netdev *net_device;
enum ena_admin_placement_policy_type tx_mem_queue_type;
u32 tx_max_header_size;
struct ena_host_attribute host_attr;
bool adaptive_coalescing;
u16 intr_delay_resolution;
+
+ /* interrupt moderation intervals are in usec divided by
+ * intr_delay_resolution, which is supplied by the device.
+ */
u32 intr_moder_tx_interval;
+ u32 intr_moder_rx_interval;
+
struct ena_intr_moder_entry *intr_moder_tbl;
struct ena_com_llq_info llq_info;
- struct ena_extra_properties_strings extra_properties_strings;
+
+ u32 ena_min_poll_delay_us;
};
struct ena_com_dev_get_features_ctx {
struct ena_admin_feature_offload_desc offload;
struct ena_admin_ena_hw_hints hw_hints;
struct ena_admin_feature_llq_desc llq;
- struct ena_admin_feature_rss_ind_table ind_table;
};
struct ena_com_create_io_ctx {
*/
int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev);
-/* ena_com_set_mmio_read_mode - Enable/disable the mmio reg read mechanism
+/* ena_com_set_mmio_read_mode - Enable/disable the indirect mmio reg read mechanism
* @ena_dev: ENA communication layer struct
* @readless_supported: readless mode (enable/disable)
*/
/* ena_com_admin_q_comp_intr_handler - admin queue interrupt handler
* @ena_dev: ENA communication layer struct
*
- * This method go over the admin completion queue and wake up all the pending
+ * This method goes over the admin completion queue and wakes up all the pending
* threads that wait on the commands wait event.
*
* @note: Should be called after MSI-X interrupt.
/* ena_com_aenq_intr_handler - AENQ interrupt handler
* @ena_dev: ENA communication layer struct
*
- * This method go over the async event notification queue and call the proper
+ * This method goes over the async event notification queue and calls the proper
* aenq handler.
*/
-void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data);
+void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data);
/* ena_com_abort_admin_commands - Abort all the outstanding admin commands.
* @ena_dev: ENA communication layer struct
/* ena_com_wait_for_abort_completion - Wait for admin commands abort.
* @ena_dev: ENA communication layer struct
*
- * This method wait until all the outstanding admin commands will be completed.
+ * This method waits until all the outstanding admin commands are completed.
*/
void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev);
/* ena_com_validate_version - Validate the device parameters
* @ena_dev: ENA communication layer struct
*
- * This method validate the device parameters are the same as the saved
+ * This method verifies the device parameters are the same as the saved
* parameters in ena_dev.
* This method is useful after device reset, to validate the device mac address
* and the device offloads are the same as before the reset.
int ena_com_get_link_params(struct ena_com_dev *ena_dev,
struct ena_admin_get_feat_resp *resp);
-/* ena_com_extra_properties_strings_init - Initialize the extra properties strings buffer.
- * @ena_dev: ENA communication layer struct
- *
- * Initialize the extra properties strings buffer.
- */
-int ena_com_extra_properties_strings_init(struct ena_com_dev *ena_dev);
-
-/* ena_com_delete_extra_properties_strings - Free the extra properties strings buffer.
- * @ena_dev: ENA communication layer struct
- *
- * Free the allocated extra properties strings buffer.
- */
-void ena_com_delete_extra_properties_strings(struct ena_com_dev *ena_dev);
-
-/* ena_com_get_extra_properties_flags - Retrieve extra properties flags.
- * @ena_dev: ENA communication layer struct
- * @resp: Extra properties flags.
- *
- * Retrieve the extra properties flags.
- *
- * @return - 0 on Success negative value otherwise.
- */
-int ena_com_get_extra_properties_flags(struct ena_com_dev *ena_dev,
- struct ena_admin_get_feat_resp *resp);
-
/* ena_com_get_dma_width - Retrieve physical dma address width the device
* supports.
* @ena_dev: ENA communication layer struct
int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
struct ena_admin_basic_stats *stats);
+/* ena_com_get_eni_stats - Get extended network interface statistics
+ * @ena_dev: ENA communication layer struct
+ * @stats: stats return value
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_eni_stats(struct ena_com_dev *ena_dev,
+ struct ena_admin_eni_stats *stats);
+
/* ena_com_set_dev_mtu - Configure the device mtu.
* @ena_dev: ENA communication layer struct
* @mtu: mtu value
*/
void ena_com_rss_destroy(struct ena_com_dev *ena_dev);
+/* ena_com_get_current_hash_function - Get RSS hash function
+ * @ena_dev: ENA communication layer struct
+ *
+ * Return the current hash function.
+ * @return: 0 or one of the ena_admin_hash_functions values.
+ */
+int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev);
+
/* ena_com_fill_hash_function - Fill RSS hash function
* @ena_dev: ENA communication layer struct
* @func: The hash function (Toeplitz or crc)
*/
int ena_com_set_hash_function(struct ena_com_dev *ena_dev);
-/* ena_com_get_hash_function - Retrieve the hash function and the hash key
- * from the device.
+/* ena_com_get_hash_function - Retrieve the hash function from the device.
* @ena_dev: ENA communication layer struct
* @func: hash function
- * @key: hash key
*
- * Retrieve the hash function and the hash key from the device.
+ * Retrieve the hash function from the device.
*
- * @note: If the caller called ena_com_fill_hash_function but didn't flash
+ * @note: If the caller called ena_com_fill_hash_function but didn't flush
* it to the device, the new configuration will be lost.
*
* @return: 0 on Success and negative value otherwise.
*/
int ena_com_get_hash_function(struct ena_com_dev *ena_dev,
- enum ena_admin_hash_functions *func,
- u8 *key);
+ enum ena_admin_hash_functions *func);
+/* ena_com_get_hash_key - Retrieve the hash key
+ * @ena_dev: ENA communication layer struct
+ * @key: hash key
+ *
+ * Retrieve the hash key.
+ *
+ * @note: If the caller called ena_com_fill_hash_key but didn't flush
+ * it to the device, the new configuration will be lost.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key);
/* ena_com_fill_hash_ctrl - Fill RSS hash control
* @ena_dev: ENA communication layer struct.
* @proto: The protocol to configure.
*
* Retrieve the hash control from the device.
*
- * @note, If the caller called ena_com_fill_hash_ctrl but didn't flash
+ * @note: If the caller called ena_com_fill_hash_ctrl but didn't flush
* it to the device, the new configuration will be lost.
*
* @return: 0 on Success and negative value otherwise.
*
* Retrieve the RSS indirection table from the device.
*
- * @note: If the caller called ena_com_indirect_table_fill_entry but didn't flash
+ * @note: If the caller called ena_com_indirect_table_fill_entry but didn't flush
* it to the device, the new configuration will be lost.
*
* @return: 0 on Success and negative value otherwise.
/* ena_com_delete_debug_area - Free the debug area resources.
* @ena_dev: ENA communication layer struct
*
- * Free the allocate debug area.
+ * Free the allocated debug area.
*/
void ena_com_delete_debug_area(struct ena_com_dev *ena_dev);
/* ena_com_delete_host_info - Free the host info resources.
* @ena_dev: ENA communication layer struct
*
- * Free the allocate host info.
+ * Free the allocated host info.
*/
void ena_com_delete_host_info(struct ena_com_dev *ena_dev);
* @cmd_completion: command completion return value.
* @cmd_comp_size: command completion size.
- * Submit an admin command and then wait until the device will return a
+ * Submit an admin command and then wait until the device returns a
* completion.
- * The completion will be copyed into cmd_comp.
+ * The completion will be copied into cmd_comp.
*
* @return - 0 on success, negative value on failure.
*/
*/
int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev);
-/* ena_com_destroy_interrupt_moderation - Destroy interrupt moderation resources
- * @ena_dev: ENA communication layer struct
- */
-void ena_com_destroy_interrupt_moderation(struct ena_com_dev *ena_dev);
-
/* ena_com_interrupt_moderation_supported - Return if interrupt moderation
* capability is supported by the device.
*
*/
bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev);
-/* ena_com_config_default_interrupt_moderation_table - Restore the interrupt
- * moderation table back to the default parameters.
- * @ena_dev: ENA communication layer struct
- */
-void ena_com_config_default_interrupt_moderation_table(struct ena_com_dev *ena_dev);
-
/* ena_com_update_nonadaptive_moderation_interval_tx - Update the
* non-adaptive interval in Tx direction.
* @ena_dev: ENA communication layer struct
*/
unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev);
-/* ena_com_init_intr_moderation_entry - Update a single entry in the interrupt
- * moderation table.
- * @ena_dev: ENA communication layer struct
- * @level: Interrupt moderation table level
- * @entry: Entry value
- *
- * Update a single entry in the interrupt moderation table.
- */
-void ena_com_init_intr_moderation_entry(struct ena_com_dev *ena_dev,
- enum ena_intr_moder_level level,
- struct ena_intr_moder_entry *entry);
-
-/* ena_com_get_intr_moderation_entry - Init ena_intr_moder_entry.
- * @ena_dev: ENA communication layer struct
- * @level: Interrupt moderation table level
- * @entry: Entry to fill.
- *
- * Initialize the entry according to the adaptive interrupt moderation table.
- */
-void ena_com_get_intr_moderation_entry(struct ena_com_dev *ena_dev,
- enum ena_intr_moder_level level,
- struct ena_intr_moder_entry *entry);
-
/* ena_com_config_dev_mode - Configure the placement policy of the device.
* @ena_dev: ENA communication layer struct
* @llq_features: LLQ feature descriptor, retrieve via
struct ena_admin_feature_llq_desc *llq_features,
struct ena_llq_configurations *llq_default_config);
+/* ena_com_io_sq_to_ena_dev - Extract ena_com_dev using contained field io_sq.
+ * @io_sq: IO submit queue struct
+ *
+ * @return - ena_com_dev struct extracted from io_sq
+ */
+static inline struct ena_com_dev *ena_com_io_sq_to_ena_dev(struct ena_com_io_sq *io_sq)
+{
+ return container_of(io_sq, struct ena_com_dev, io_sq_queues[io_sq->qid]);
+}
+
+/* ena_com_io_cq_to_ena_dev - Extract ena_com_dev using contained field io_cq.
+ * @io_sq: IO submit queue struct
+ *
+ * @return - ena_com_dev struct extracted from io_sq
+ */
+static inline struct ena_com_dev *ena_com_io_cq_to_ena_dev(struct ena_com_io_cq *io_cq)
+{
+ return container_of(io_cq, struct ena_com_dev, io_cq_queues[io_cq->qid]);
+}
+
static inline bool ena_com_get_adaptive_moderation_enabled(struct ena_com_dev *ena_dev)
{
return ena_dev->adaptive_coalescing;
ena_dev->adaptive_coalescing = false;
}
-/* ena_com_calculate_interrupt_delay - Calculate new interrupt delay
- * @ena_dev: ENA communication layer struct
- * @pkts: Number of packets since the last update
- * @bytes: Number of bytes received since the last update.
- * @smoothed_interval: Returned interval
- * @moder_tbl_idx: Current table level as input update new level as return
- * value.
- */
-static inline void ena_com_calculate_interrupt_delay(struct ena_com_dev *ena_dev,
- unsigned int pkts,
- unsigned int bytes,
- unsigned int *smoothed_interval,
- unsigned int *moder_tbl_idx)
-{
- enum ena_intr_moder_level curr_moder_idx, new_moder_idx;
- struct ena_intr_moder_entry *curr_moder_entry;
- struct ena_intr_moder_entry *pred_moder_entry;
- struct ena_intr_moder_entry *new_moder_entry;
- struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
- unsigned int interval;
-
- /* We apply adaptive moderation on Rx path only.
- * Tx uses static interrupt moderation.
- */
- if (!pkts || !bytes)
- /* Tx interrupt, or spurious interrupt,
- * in both cases we just use same delay values
- */
- return;
-
- curr_moder_idx = (enum ena_intr_moder_level)(*moder_tbl_idx);
- if (unlikely(curr_moder_idx >= ENA_INTR_MAX_NUM_OF_LEVELS)) {
- ena_trc_err("Wrong moderation index %u\n", curr_moder_idx);
- return;
- }
-
- curr_moder_entry = &intr_moder_tbl[curr_moder_idx];
- new_moder_idx = curr_moder_idx;
-
- if (curr_moder_idx == ENA_INTR_MODER_LOWEST) {
- if ((pkts > curr_moder_entry->pkts_per_interval) ||
- (bytes > curr_moder_entry->bytes_per_interval))
- new_moder_idx =
- (enum ena_intr_moder_level)(curr_moder_idx + ENA_INTR_MODER_LEVEL_STRIDE);
- } else {
- pred_moder_entry = &intr_moder_tbl[curr_moder_idx - ENA_INTR_MODER_LEVEL_STRIDE];
-
- if ((pkts <= pred_moder_entry->pkts_per_interval) ||
- (bytes <= pred_moder_entry->bytes_per_interval))
- new_moder_idx =
- (enum ena_intr_moder_level)(curr_moder_idx - ENA_INTR_MODER_LEVEL_STRIDE);
- else if ((pkts > curr_moder_entry->pkts_per_interval) ||
- (bytes > curr_moder_entry->bytes_per_interval)) {
- if (curr_moder_idx != ENA_INTR_MODER_HIGHEST)
- new_moder_idx =
- (enum ena_intr_moder_level)(curr_moder_idx + ENA_INTR_MODER_LEVEL_STRIDE);
- }
- }
- new_moder_entry = &intr_moder_tbl[new_moder_idx];
-
- interval = new_moder_entry->intr_moder_interval;
- *smoothed_interval = (
- (interval * ENA_INTR_DELAY_NEW_VALUE_WEIGHT +
- ENA_INTR_DELAY_OLD_VALUE_WEIGHT * (*smoothed_interval)) + 5) /
- 10;
-
- *moder_tbl_idx = new_moder_idx;
-}
-
/* ena_com_update_intr_reg - Prepare interrupt register
* @intr_reg: interrupt register to update.
* @rx_delay_interval: Rx interval in usecs
* @tx_delay_interval: Tx interval in usecs
- * @unmask: unask enable/disable
+ * @unmask: unmask enable/disable
*
* Prepare interrupt update register with the supplied parameters.
*/
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