src/drivers/net/ice.h

#ifndef _ICE_H
#define _ICE_H

/** @file
 *
 * Intel 100 Gigabit Ethernet network card driver
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include <ipxe/if_ether.h>
#include "intelxl.h"

/** BAR size */
#define ICE_BAR_SIZE 0x800000

/******************************************************************************
 *
 * Transmit and receive datapaths
 *
 ******************************************************************************
 */

/** Transmit queue context */
struct ice_context_tx {
	/** Base address */
	uint64_t base_port;
	/** PF number and queue type */
	uint16_t pf_type;
	/** Source VSI */
	uint16_t vsi;
	/** Reserved */
	uint8_t reserved_c[5];
	/** Queue length */
	uint16_t len;
	/** Flags */
	uint16_t flags;
	/** Reserved */
	uint8_t reserved_d[3];
} __attribute__ (( packed ));

/** Transmit scheduler configuration */
struct ice_schedule_tx {
	/** Node type */
	uint8_t type;
	/** Valid sections */
	uint8_t sections;
	/** Generic information */
	uint8_t generic;
	/** Flags */
	uint8_t flags;
	/** Committed bandwidth profile ID */
	uint16_t commit_id;
	/** Committeed bandwidth weight */
	uint16_t commit_weight;
	/** Excess bandwidth profile ID */
	uint16_t excess_id;
	/** Excess bandwidth weight */
	uint16_t excess_weight;
	/** Shared rate limit profile ID */
	uint16_t shared;
	/** Reserved */
	uint16_t reserved;
} __attribute__ (( packed ));

/** Global Receive Queue Control Register */
#define ICE_QRX_CTRL 0x120000

/** Receive Queue Context Registers */
#define ICE_QRX_CONTEXT(x) ( 0x280000 + ( 0x2000 * (x) ) )

/** Receive Queue Tail Register */
#define ICE_QRX_TAIL 0x290000

/** Transmit Comm Scheduler Queue Doorbell Register */
#define ICE_QTX_COMM_DBELL 0x2c0000

/** Transmit Comm Scheduler Queue Context Data Registers */
#define ICE_GLCOMM_QTX_CNTX_DATA(x) ( 0x2d2d40 + ( 0x4 * (x) ) )

/** Transmit Comm Scheduler Queue Context Control Register */
#define ICE_GLCOMM_QTX_CNTX_CTL 0x2d2dc8
#define ICE_GLCOMM_QTX_CNTX_CTL_CMD(x) ( (x) << 16 )	/**< Command */
#define ICE_GLCOMM_QTX_CNTX_CTL_CMD_READ \
	ICE_GLCOMM_QTX_CNTX_CTL_CMD ( 0 )		/**< Read context */
#define ICE_GLCOMM_QTX_CNTX_CTL_EXEC	0x00080000UL	/**< Execute */

/** Transmit Comm Scheduler Queue Context Status Register */
#define ICE_GLCOMM_QTX_CNTX_STAT 0x2d2dcc
#define ICE_GLCOMM_QTX_CNTX_BUSY	0x00000001UL	/**< In progress */

/** Queue Context Flex Extension Register */
#define ICE_QRX_FLXP_CNTXT 0x480000
#define ICE_QRX_FLXP_CNTXT_RXDID_IDX(x) ( (x) << 0 )	/**< RX profile */
#define ICE_QRX_FLXP_CNTXT_RXDID_IDX_LEGACY_32 \
	ICE_QRX_FLXP_CNTXT_RXDID_IDX ( 1 )		/**< 32-byte legacy */
#define ICE_QRX_FLXP_CNTXT_RXDID_PRIO(x) ( (x) << 8 )	/**< Priority */
#define ICE_QRX_FLXP_CNTXT_RXDID_PRIO_MAX \
	ICE_QRX_FLXP_CNTXT_RXDID_PRIO ( 7 )		/**< Maximum priority */

/******************************************************************************
 *
 * Admin queue
 *
 ******************************************************************************
 */

/** Admin queue version number */
struct ice_admin_version {
	/** Branch identifier */
	uint8_t branch;
	/** Major version number */
	uint8_t major;
	/** Minor version number */
	uint8_t minor;
	/** Patch level */
	uint8_t patch;
} __attribute__ (( packed ));

/** Admin queue Get Version command parameters */
struct ice_admin_version_params {
	/** ROM version */
	uint32_t rom;
	/** Firmware build ID */
	uint32_t build;
	/** Firmware version */
	struct ice_admin_version firmware;
	/** API version */
	struct ice_admin_version api;
} __attribute__ (( packed ));

/** Admin queue Manage MAC Address Read command parameters */
struct ice_admin_mac_read_params {
	/** Valid addresses */
	uint8_t valid;
	/** Reserved */
	uint8_t reserved_a[3];
	/** Number of addresses in response */
	uint8_t count;
	/** Reserved */
	uint8_t reserved_b[11];
} __attribute__ (( packed ));

/** MAC Address description */
struct ice_admin_mac_read_address {
	/** Port number */
	uint8_t port;
	/** Address type */
	uint8_t type;
	/** MAC address */
	uint8_t mac[ETH_ALEN];
} __attribute__ (( packed ));

/** LAN MAC address type */
#define ICE_ADMIN_MAC_READ_TYPE_LAN 0

/** Admin queue Manage MAC Address Read data buffer */
struct ice_admin_mac_read_buffer {
	/** MAC addresses */
	struct ice_admin_mac_read_address mac[4];
} __attribute__ (( packed ));

/** Admin queue Manage MAC Address Write command parameters */
struct ice_admin_mac_write_params {
	/** Reserved */
	uint8_t reserved_a[1];
	/** Write type */
	uint8_t type;
	/** MAC address */
	uint8_t mac[ETH_ALEN];
	/** Reserved */
	uint8_t reserved_b[8];
} __attribute__ (( packed ));

/** Admin queue Get Switch Configuration command parameters */
struct ice_admin_switch_params {
	/** Reserved */
	uint8_t reserved_a[2];
	/** Starting switching element identifier */
	uint16_t next;
	/** Reserved */
	uint8_t reserved[4];
	/** Data buffer address */
	uint64_t address;
} __attribute__ (( packed ));

/** Switching element configuration */
struct ice_admin_switch_config {
	/** Switching element ID and flags */
	uint16_t seid;
	/** Uplink switching element ID */
	uint16_t uplink;
	/** PF/VF number */
	uint16_t func;
} __attribute__ (( packed ));

/** Switching element ID type mask */
#define ICE_ADMIN_SWITCH_TYPE_MASK 0xc000

/** Virtual Station Interface element type */
#define ICE_ADMIN_SWITCH_TYPE_VSI 0x8000

/** Admin queue Get Switch Configuration data buffer */
struct ice_admin_switch_buffer {
	/** Switch configuration */
	struct ice_admin_switch_config cfg[1];
};

/** Admin queue Add Switch Rules command */
#define ICE_ADMIN_ADD_RULES 0x02a0

/** Admin queue Add Switch Rules command parameters */
struct ice_admin_rules_params {
	/** Number of rules */
	uint16_t count;
	/** Reserved */
	uint8_t reserved[6];
} __attribute__ (( packed ));

/** Admin queue Add Switch Rules data buffer */
struct ice_admin_rules_buffer {
	/** Type */
	uint16_t type;
	/** Return status */
	uint16_t status;
	/** Receipt ID */
	uint16_t recipe;
	/** Source port */
	uint16_t port;
	/** Action */
	uint32_t action;
	/** Lookup table index */
	uint16_t index;
	/** Header length */
	uint16_t len;
	/** Header data */
	union {
		/** Ethernet header */
		struct ethhdr eth;
		/** Raw data */
		uint8_t raw[16];
	} __attribute__ (( packed )) hdr;
} __attribute__ (( packed ));

/** Switch rule promiscuous recipe ID */
#define ICE_ADMIN_RULES_RECIPE_PROMISC 0x0003

/** Switch rule action valid */
#define ICE_ADMIN_RULES_ACTION_VALID 0x00020000UL

/** Switch rule VSI number */
#define ICE_ADMIN_RULES_ACTION_VSI(x) ( (x) << 4 )

/** Admin queue Query Default Scheduling Tree Topology command */
#define ICE_ADMIN_SCHEDULE 0x0400

/** Admin queue Query Default Scheduling Tree Topology command parameters */
struct ice_admin_schedule_params {
	/** Reserved */
	uint8_t reserved_a;
	/** Total branches */
	uint8_t branches;
	/** Reserved */
	uint8_t reserved_b[6];
} __attribute__ (( packed ));

/** Transmit scheduler configuration generic section is valid */
#define ICE_SCHEDULE_GENERIC 0x01

/** Transmit scheduler configuration committed bandwidth section is valid */
#define ICE_SCHEDULE_COMMIT 0x02

/** Transmit scheduler configuration excess bandwidth section is valid */
#define ICE_SCHEDULE_EXCESS 0x04

/** Transmit scheduler configuration default weight */
#define ICE_SCHEDULE_WEIGHT 0x0004

/** Admin queue Query Default Scheduling Tree Topology node */
struct ice_admin_schedule_node {
	/** Parent TEID */
	uint32_t parent;
	/** Node TEID */
	uint32_t teid;
	/** Scheduler configuration */
	struct ice_schedule_tx config;
} __attribute__ (( packed ));

/** Admin queue Query Default Scheduling Tree Topology branch */
struct ice_admin_schedule_branch {
	/** Reserved */
	uint8_t reserved_a[4];
	/** Number of nodes */
	uint16_t count;
	/** Reserved */
	uint8_t reserved_b[2];
	/** Nodes */
	struct ice_admin_schedule_node node[0];
} __attribute__ (( packed ));

/** Admin queue Query Default Scheduling Tree Topology data buffer */
union ice_admin_schedule_buffer {
	/** Branches */
	struct ice_admin_schedule_branch branch[0];
	/** Padding */
	uint8_t pad[INTELXL_ADMIN_BUFFER_SIZE];
} __attribute__ (( packed ));

/** Admin queue Restart Autonegotiation command parameters */
struct ice_admin_autoneg_params {
	/** Reserved */
	uint8_t reserved_a[2];
	/** Flags */
	uint8_t flags;
	/** Reserved */
	uint8_t reserved_b[13];
} __attribute__ (( packed ));

/** Admin queue Get Link Status command parameters */
struct ice_admin_link_params {
	/** Logical port number */
	uint8_t port;
	/** Reserved */
	uint8_t reserved_a;
	/** Link status notification */
	uint8_t notify;
	/** Reserved */
	uint8_t reserved_b[13];
} __attribute__ (( packed ));

/** Admin queue Get Link Status data buffer */
struct ice_admin_link_buffer {
	/** Topology conflicts */
	uint8_t conflict;
	/** Configuration errors */
	uint8_t error;
	/** Link status */
	uint8_t status;
	/** Reserved */
	uint8_t reserved_a[7];
	/** Link speed */
	uint16_t speed;
	/** Reserved */
	uint8_t reserved_b[20];
} __attribute__ (( packed ));

/** Admin queue Add Transmit Queues command */
#define ICE_ADMIN_ADD_TXQ 0x0c30

/** Admin queue Add Transmit Queues command parameters */
struct ice_admin_add_txq_params {
	/** Number of queue groups */
	uint8_t count;
	/** Reserved */
	uint8_t reserved[7];
} __attribute__ (( packed ));

/** Admin queue Add Transmit Queues data buffer */
struct ice_admin_add_txq_buffer {
	/** Parent TEID */
	uint32_t parent;
	/** Number of queues */
	uint8_t count;
	/** Reserved */
	uint8_t reserved_a[3];
	/** Transmit queue ID */
	uint16_t id;
	/** Reserved */
	uint8_t reserved_b[2];
	/** Queue TEID */
	uint32_t teid;
	/** Transmit queue context */
	struct ice_context_tx ctx;
	/** Scheduler configuration */
	struct ice_schedule_tx sched;
} __attribute__ (( packed ));

/** Transmit queue base address and port number */
#define ICE_TXQ_BASE_PORT( addr, port ) \
	( ( (addr) >> 7 ) | ( ( ( uint64_t ) (port) ) << 57 ) )

/** Transmit queue PF number */
#define ICE_TXQ_PF_TYPE( pf ) ( ( (pf) << 1 ) | ( 0x2 << 14 ) )

/** Transmit queue length */
#define ICE_TXQ_LEN( count ) ( (count) >> 1 )

/** Transmit queue uses TSO */
#define ICE_TXQ_FL_TSO 0x0001

/** Transmit queue uses legacy mode*/
#define ICE_TXQ_FL_LEGACY 0x1000

/** Admin queue Disable Transmit Queues command */
#define ICE_ADMIN_DISABLE_TXQ 0x0c31

/** Admin queue Disable Transmit Queues command parameters */
struct ice_admin_disable_txq_params {
	/** Flags */
	uint8_t flags;
	/** Number of queue groups */
	uint8_t count;
	/** Reserved */
	uint8_t reserved_a;
	/** Timeout */
	uint8_t timeout;
	/** Reserved */
	uint8_t reserved_b[4];
} __attribute__ (( packed ));

/** Disable queue and flush pipe */
#define ICE_TXQ_FL_FLUSH 0x08

/** Disable queue timeout */
#define ICE_TXQ_TIMEOUT 0xc8

/** Admin queue Disable Transmit Queues data buffer */
struct ice_admin_disable_txq_buffer {
	/** Parent TEID */
	uint32_t parent;
	/** Number of queues */
	uint8_t count;
	/** Reserved */
	uint8_t reserved;
	/** Transmit queue ID */
	uint16_t id;
} __attribute__ (( packed ));

/** Admin queue command parameters */
union ice_admin_params {
	/** Additional data buffer command parameters */
	struct intelxl_admin_buffer_params buffer;
	/** Get Version command parameters */
	struct ice_admin_version_params version;
	/** Manage MAC Address Read command parameters */
	struct ice_admin_mac_read_params mac_read;
	/** Manage MAC Address Write command parameters */
	struct ice_admin_mac_write_params mac_write;
	/** Get Switch Configuration command parameters */
	struct ice_admin_switch_params sw;
	/** Add Switch Rules command parameters */
	struct ice_admin_rules_params rules;
	/** Query Default Scheduling Tree Topology command parameters */
	struct ice_admin_schedule_params sched;
	/** Restart Autonegotiation command parameters */
	struct ice_admin_autoneg_params autoneg;
	/** Get Link Status command parameters */
	struct ice_admin_link_params link;
	/** Add Transmit Queue command parameters */
	struct ice_admin_add_txq_params add_txq;
	/** Disable Transmit Queue command parameters */
	struct ice_admin_disable_txq_params disable_txq;
} __attribute__ (( packed ));


/** Admin queue data buffer */
union ice_admin_buffer {
	/** Original 40 Gigabit Ethernet data buffer */
	union intelxl_admin_buffer xl;
	/** Manage MAC Address Read data buffer */
	struct ice_admin_mac_read_buffer mac_read;
	/** Get Switch Configuration data buffer */
	struct ice_admin_switch_buffer sw;
	/** Add Switch Rules data buffer */
	struct ice_admin_rules_buffer rules;
	/** Query Default Scheduling Tree Topology data buffer */
	union ice_admin_schedule_buffer sched;
	/** Get Link Status data buffer */
	struct ice_admin_link_buffer link;
	/** Add Transmit Queue data buffer */
	struct ice_admin_add_txq_buffer add_txq;
	/** Disable Transmit Queue data buffer */
	struct ice_admin_disable_txq_buffer disable_txq;
} __attribute__ (( packed ));

/** Admin queue descriptor */
struct ice_admin_descriptor {
	/** Transparent union */
	union {
		/** Original 40 Gigabit Ethernet descriptor */
		struct intelxl_admin_descriptor xl;
		/** Transparent struct */
		struct {
			/** Flags */
			uint16_t flags;
			/** Opcode */
			uint16_t opcode;
			/** Data length */
			uint16_t len;
			/** Return value */
			uint16_t ret;
			/** Opaque cookie */
			uint32_t cookie;
			/** Reserved */
			uint8_t reserved[4];
			/** Parameters */
			union ice_admin_params params;
		} __attribute__ (( packed ));
	} __attribute__ (( packed ));
} __attribute__ (( packed ));

/**
 * Get next admin command queue descriptor
 *
 * @v intelxl		Intel device
 * @ret cmd		Command descriptor
 */
struct ice_admin_descriptor *
ice_admin_command_descriptor ( struct intelxl_nic *intelxl ) {
	struct intelxl_admin_descriptor *xlcmd =
		intelxl_admin_command_descriptor ( intelxl );

	return container_of ( xlcmd, struct ice_admin_descriptor, xl );
}

/**
 * Get next admin command queue data buffer
 *
 * @v intelxl		Intel device
 * @ret buf		Data buffer
 */
static inline __attribute__ (( always_inline )) union ice_admin_buffer *
ice_admin_command_buffer ( struct intelxl_nic *intelxl ) {
	union intelxl_admin_buffer *xlbuf =
		intelxl_admin_command_buffer ( intelxl );

	return container_of ( xlbuf, union ice_admin_buffer, xl );
}

/******************************************************************************
 *
 * Top level
 *
 ******************************************************************************
 */

/** Function Requester ID Information Register */
#define ICE_PFFUNC_RID 0x09e880
#define ICE_PFFUNC_RID_FUNC_NUM(x) \
	( ( (x) >> 0 ) & 0x7 )				/**< Function number */

/** PF LAN Port Number Register */
#define ICE_PFGEN_PORTNUM 0x1d2400
#define ICE_PFGEN_PORTNUM_PORT_NUM(x) \
	( ( (x) >> 0 ) & 0x7 )				/**< Port number */

/** Transmit Queue Interrupt Cause Control Register */
#define ICE_QINT_TQCTL 0x140000
#define ICE_QINT_TQCTL_ITR_INDX(x) ( (x) << 11 )	/**< Throttling */
#define ICE_QINT_TQCTL_ITR_INDX_NONE \
	ICE_QINT_TQCTL_ITR_INDX ( 0x3 )			/**< No throttling */
#define ICE_QINT_TQCTL_CAUSE_ENA	0x40000000UL	/**< Enable */

/** Receive Queue Interrupt Cause Control Register */
#define ICE_QINT_RQCTL 0x150000
#define ICE_QINT_RQCTL_ITR_INDX(x) ( (x) << 11 )	/**< Throttling */
#define ICE_QINT_RQCTL_ITR_INDX_NONE \
	ICE_QINT_RQCTL_ITR_INDX ( 0x3 )			/**< No throttling */
#define ICE_QINT_RQCTL_CAUSE_ENA	0x40000000UL	/**< Enable */

/** Global Interrupt Dynamic Control Register */
#define ICE_GLINT_DYN_CTL 0x160000

#endif /* _ICE_H */