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Commit e8c4265b authored by Matan Barak's avatar Matan Barak Committed by David S. Miller
Browse files

net/mlx4_core: Add QUERY_FUNC firmware command 



QUERY_FUNC firmware command could be used in order to query the
number of EQs, reserved EQs, etc for a specific function.

Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a0eacca9

drivers/net/ethernet/mellanox/mlx4/fw.c

+56 −0
Original line number Diff line number Diff line
@@ -177,6 +177,62 @@ int mlx4_MOD_STAT_CFG(struct mlx4_dev *dev, struct mlx4_mod_stat_cfg *cfg) 
	return err;

}



int mlx4_QUERY_FUNC(struct mlx4_dev *dev, struct mlx4_func *func, int slave)

{

	struct mlx4_cmd_mailbox *mailbox;

	u32 *outbox;

	u8 in_modifier;

	u8 field;

	u16 field16;

	int err;



#define QUERY_FUNC_BUS_OFFSET			0x00

#define QUERY_FUNC_DEVICE_OFFSET		0x01

#define QUERY_FUNC_FUNCTION_OFFSET		0x01

#define QUERY_FUNC_PHYSICAL_FUNCTION_OFFSET	0x03

#define QUERY_FUNC_RSVD_EQS_OFFSET		0x04

#define QUERY_FUNC_MAX_EQ_OFFSET		0x06

#define QUERY_FUNC_RSVD_UARS_OFFSET		0x0b



	mailbox = mlx4_alloc_cmd_mailbox(dev);

	if (IS_ERR(mailbox))

		return PTR_ERR(mailbox);

	outbox = mailbox->buf;



	in_modifier = slave;

	mlx4_dbg(dev, "%s for VF %d\n", __func__, in_modifier);



	err = mlx4_cmd_box(dev, 0, mailbox->dma, in_modifier, 0,

			   MLX4_CMD_QUERY_FUNC,

			   MLX4_CMD_TIME_CLASS_A,

			   MLX4_CMD_NATIVE);

	if (err)

		goto out;



	MLX4_GET(field, outbox, QUERY_FUNC_BUS_OFFSET);

	func->bus = field & 0xf;

	MLX4_GET(field, outbox, QUERY_FUNC_DEVICE_OFFSET);

	func->device = field & 0xf1;

	MLX4_GET(field, outbox, QUERY_FUNC_FUNCTION_OFFSET);

	func->function = field & 0x7;

	MLX4_GET(field, outbox, QUERY_FUNC_PHYSICAL_FUNCTION_OFFSET);

	func->physical_function = field & 0xf;

	MLX4_GET(field16, outbox, QUERY_FUNC_RSVD_EQS_OFFSET);

	func->rsvd_eqs = field16 & 0xffff;

	MLX4_GET(field16, outbox, QUERY_FUNC_MAX_EQ_OFFSET);

	func->max_eq = field16 & 0xffff;

	MLX4_GET(field, outbox, QUERY_FUNC_RSVD_UARS_OFFSET);

	func->rsvd_uars = field & 0x0f;



	mlx4_dbg(dev, "Bus: %d, Device: %d, Function: %d, Physical function: %d, Max EQs: %d, Reserved EQs: %d, Reserved UARs: %d\n",

		 func->bus, func->device, func->function, func->physical_function,

		 func->max_eq, func->rsvd_eqs, func->rsvd_uars);



out:

	mlx4_free_cmd_mailbox(dev, mailbox);

	return err;

}



int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,

				struct mlx4_vhcr *vhcr,

				struct mlx4_cmd_mailbox *inbox,

drivers/net/ethernet/mellanox/mlx4/fw.h

+11 −0
Original line number Diff line number Diff line
@@ -145,6 +145,16 @@ struct mlx4_func_cap { 
	u64	phys_port_id;

};



struct mlx4_func {

	int	bus;

	int	device;

	int	function;

	int	physical_function;

	int	rsvd_eqs;

	int	max_eq;

	int	rsvd_uars;

};



struct mlx4_adapter {

	char board_id[MLX4_BOARD_ID_LEN];

	u8   inta_pin;
@@ -211,6 +221,7 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave, 
				struct mlx4_cmd_mailbox *inbox,

				struct mlx4_cmd_mailbox *outbox,

				struct mlx4_cmd_info *cmd);

int mlx4_QUERY_FUNC(struct mlx4_dev *dev, struct mlx4_func *func, int slave);

int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm);

int mlx4_UNMAP_FA(struct mlx4_dev *dev);

int mlx4_RUN_FW(struct mlx4_dev *dev);