216 lines
5.9 KiB
C
216 lines
5.9 KiB
C
|
/***********************license start***************
|
||
|
|
* Author: Cavium Networks
|
||
|
|
*
|
||
|
|
* Contact: support@caviumnetworks.com
|
||
|
|
* This file is part of the OCTEON SDK
|
||
|
|
*
|
||
|
|
* Copyright (c) 2003-2008 Cavium Networks
|
||
|
|
*
|
||
|
|
* This file is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License, Version 2, as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This file is distributed in the hope that it will be useful, but
|
||
|
|
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
|
||
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
|
||
|
|
* NONINFRINGEMENT. See the GNU General Public License for more
|
||
|
|
* details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this file; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
* or visit http://www.gnu.org/licenses/.
|
||
|
|
*
|
||
|
|
* This file may also be available under a different license from Cavium.
|
||
|
|
* Contact Cavium Networks for more information
|
||
|
|
***********************license end**************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
* Small helper utilities.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __CVMX_HELPER_UTIL_H__
|
||
|
|
#define __CVMX_HELPER_UTIL_H__
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert a interface mode into a human readable string
|
||
|
|
*
|
||
|
|
* @mode: Mode to convert
|
||
|
|
*
|
||
|
|
* Returns String
|
||
|
|
*/
|
||
|
|
extern const char
|
||
|
|
*cvmx_helper_interface_mode_to_string(cvmx_helper_interface_mode_t mode);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Debug routine to dump the packet structure to the console
|
||
|
|
*
|
||
|
|
* @work: Work queue entry containing the packet to dump
|
||
|
|
* Returns
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_dump_packet(cvmx_wqe_t *work);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Setup Random Early Drop on a specific input queue
|
||
|
|
*
|
||
|
|
* @queue: Input queue to setup RED on (0-7)
|
||
|
|
* @pass_thresh:
|
||
|
|
* Packets will begin slowly dropping when there are less than
|
||
|
|
* this many packet buffers free in FPA 0.
|
||
|
|
* @drop_thresh:
|
||
|
|
* All incoming packets will be dropped when there are less
|
||
|
|
* than this many free packet buffers in FPA 0.
|
||
|
|
* Returns Zero on success. Negative on failure
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_setup_red_queue(int queue, int pass_thresh,
|
||
|
|
int drop_thresh);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Setup Random Early Drop to automatically begin dropping packets.
|
||
|
|
*
|
||
|
|
* @pass_thresh:
|
||
|
|
* Packets will begin slowly dropping when there are less than
|
||
|
|
* this many packet buffers free in FPA 0.
|
||
|
|
* @drop_thresh:
|
||
|
|
* All incoming packets will be dropped when there are less
|
||
|
|
* than this many free packet buffers in FPA 0.
|
||
|
|
* Returns Zero on success. Negative on failure
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_setup_red(int pass_thresh, int drop_thresh);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the version of the CVMX libraries.
|
||
|
|
*
|
||
|
|
* Returns Version string. Note this buffer is allocated statically
|
||
|
|
* and will be shared by all callers.
|
||
|
|
*/
|
||
|
|
extern const char *cvmx_helper_get_version(void);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Setup the common GMX settings that determine the number of
|
||
|
|
* ports. These setting apply to almost all configurations of all
|
||
|
|
* chips.
|
||
|
|
*
|
||
|
|
* @interface: Interface to configure
|
||
|
|
* @num_ports: Number of ports on the interface
|
||
|
|
*
|
||
|
|
* Returns Zero on success, negative on failure
|
||
|
|
*/
|
||
|
|
extern int __cvmx_helper_setup_gmx(int interface, int num_ports);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the IPD/PKO port number for a port on the given
|
||
|
|
* interface.
|
||
|
|
*
|
||
|
|
* @interface: Interface to use
|
||
|
|
* @port: Port on the interface
|
||
|
|
*
|
||
|
|
* Returns IPD/PKO port number
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_get_ipd_port(int interface, int port);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the IPD/PKO port number for the first port on the given
|
||
|
|
* interface.
|
||
|
|
*
|
||
|
|
* @interface: Interface to use
|
||
|
|
*
|
||
|
|
* Returns IPD/PKO port number
|
||
|
|
*/
|
||
|
|
static inline int cvmx_helper_get_first_ipd_port(int interface)
|
||
|
|
{
|
||
|
|
return cvmx_helper_get_ipd_port(interface, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the IPD/PKO port number for the last port on the given
|
||
|
|
* interface.
|
||
|
|
*
|
||
|
|
* @interface: Interface to use
|
||
|
|
*
|
||
|
|
* Returns IPD/PKO port number
|
||
|
|
*/
|
||
|
|
static inline int cvmx_helper_get_last_ipd_port(int interface)
|
||
|
|
{
|
||
|
|
extern int cvmx_helper_ports_on_interface(int interface);
|
||
|
|
|
||
|
|
return cvmx_helper_get_first_ipd_port(interface) +
|
||
|
|
cvmx_helper_ports_on_interface(interface) - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Free the packet buffers contained in a work queue entry.
|
||
|
|
* The work queue entry is not freed.
|
||
|
|
*
|
||
|
|
* @work: Work queue entry with packet to free
|
||
|
|
*/
|
||
|
|
static inline void cvmx_helper_free_packet_data(cvmx_wqe_t *work)
|
||
|
|
{
|
||
|
|
uint64_t number_buffers;
|
||
|
|
union cvmx_buf_ptr buffer_ptr;
|
||
|
|
union cvmx_buf_ptr next_buffer_ptr;
|
||
|
|
uint64_t start_of_buffer;
|
||
|
|
|
||
|
|
number_buffers = work->word2.s.bufs;
|
||
|
|
if (number_buffers == 0)
|
||
|
|
return;
|
||
|
|
buffer_ptr = work->packet_ptr;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Since the number of buffers is not zero, we know this is
|
||
|
|
* not a dynamic short packet. We need to check if it is a
|
||
|
|
* packet received with IPD_CTL_STATUS[NO_WPTR]. If this is
|
||
|
|
* true, we need to free all buffers except for the first
|
||
|
|
* one. The caller doesn't expect their WQE pointer to be
|
||
|
|
* freed
|
||
|
|
*/
|
||
|
|
start_of_buffer = ((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7;
|
||
|
|
if (cvmx_ptr_to_phys(work) == start_of_buffer) {
|
||
|
|
next_buffer_ptr =
|
||
|
|
*(union cvmx_buf_ptr *) cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
|
||
|
|
buffer_ptr = next_buffer_ptr;
|
||
|
|
number_buffers--;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (number_buffers--) {
|
||
|
|
/*
|
||
|
|
* Remember the back pointer is in cache lines, not
|
||
|
|
* 64bit words
|
||
|
|
*/
|
||
|
|
start_of_buffer =
|
||
|
|
((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7;
|
||
|
|
/*
|
||
|
|
* Read pointer to next buffer before we free the
|
||
|
|
* current buffer.
|
||
|
|
*/
|
||
|
|
next_buffer_ptr =
|
||
|
|
*(union cvmx_buf_ptr *) cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
|
||
|
|
cvmx_fpa_free(cvmx_phys_to_ptr(start_of_buffer),
|
||
|
|
buffer_ptr.s.pool, 0);
|
||
|
|
buffer_ptr = next_buffer_ptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the interface number for an IPD/PKO port number.
|
||
|
|
*
|
||
|
|
* @ipd_port: IPD/PKO port number
|
||
|
|
*
|
||
|
|
* Returns Interface number
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_get_interface_num(int ipd_port);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the interface index number for an IPD/PKO port
|
||
|
|
* number.
|
||
|
|
*
|
||
|
|
* @ipd_port: IPD/PKO port number
|
||
|
|
*
|
||
|
|
* Returns Interface index number
|
||
|
|
*/
|
||
|
|
extern int cvmx_helper_get_interface_index_num(int ipd_port);
|
||
|
|
|
||
|
|
#endif /* __CVMX_HELPER_H__ */
|