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freebsd-skq/sys/contrib/octeon-sdk/cvmx-mgmt-port.c
jmallett 4948f4b8d5 Import the Cavium Simple Executive from the Cavium Octeon SDK. The Simple 
Executive is a library that can be used by standalone applications and kernels
to abstract access to Octeon SoC and board-specific hardware and facilities.
The FreeBSD port to Octeon will be updated to use this where possible.
2010-07-20 07:19:43 +00:00

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/***********************license start***************
* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
*
*
* For any questions regarding licensing please contact marketing@caviumnetworks.com
*
***********************license end**************************************/
/**
* @file
*
* Support functions for managing the MII management port
*
* <hr>$Revision: 42151 $<hr>
*/
#include "cvmx.h"
#include "cvmx-bootmem.h"
#include "cvmx-spinlock.h"
#include "cvmx-mdio.h"
#include "cvmx-mgmt-port.h"
#include "cvmx-sysinfo.h"
/**
* Format of the TX/RX ring buffer entries
*/
typedef union
{
uint64_t u64;
struct
{
uint64_t reserved_62_63 : 2;
uint64_t len : 14; /* Length of the buffer/packet in bytes */
uint64_t code : 8; /* The RX error code */
uint64_t addr : 40; /* Physical address of the buffer */
} s;
} cvmx_mgmt_port_ring_entry_t;
/**
* Per port state required for each mgmt port
*/
typedef struct
{
cvmx_spinlock_t lock; /* Used for exclusive access to this structure */
int tx_write_index; /* Where the next TX will write in the tx_ring and tx_buffers */
int rx_read_index; /* Where the next RX will be in the rx_ring and rx_buffers */
int phy_id; /* The SMI/MDIO PHY address */
uint64_t mac; /* Our MAC address */
cvmx_mgmt_port_ring_entry_t tx_ring[CVMX_MGMT_PORT_NUM_TX_BUFFERS];
cvmx_mgmt_port_ring_entry_t rx_ring[CVMX_MGMT_PORT_NUM_RX_BUFFERS];
char tx_buffers[CVMX_MGMT_PORT_NUM_TX_BUFFERS][CVMX_MGMT_PORT_TX_BUFFER_SIZE];
char rx_buffers[CVMX_MGMT_PORT_NUM_RX_BUFFERS][CVMX_MGMT_PORT_RX_BUFFER_SIZE];
} cvmx_mgmt_port_state_t;
/**
* Pointers to each mgmt port's state
*/
CVMX_SHARED cvmx_mgmt_port_state_t *cvmx_mgmt_port_state_ptr = NULL;
/**
* Return the number of management ports supported by this chip
*
* @return Number of ports
*/
int __cvmx_mgmt_port_num_ports(void)
{
if (OCTEON_IS_MODEL(OCTEON_CN56XX))
return 1;
else if (OCTEON_IS_MODEL(OCTEON_CN52XX))
return 2;
else
return 0;
}
/**
* Called to initialize a management port for use. Multiple calls
* to this function accross applications is safe.
*
* @param port Port to initialize
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_initialize(int port)
{
char *alloc_name = "cvmx_mgmt_port";
cvmx_mixx_oring1_t oring1;
cvmx_mixx_ctl_t mix_ctl;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
cvmx_mgmt_port_state_ptr = cvmx_bootmem_alloc_named(CVMX_MGMT_PORT_NUM_PORTS * sizeof(cvmx_mgmt_port_state_t), 128, alloc_name);
if (cvmx_mgmt_port_state_ptr)
{
memset(cvmx_mgmt_port_state_ptr, 0, CVMX_MGMT_PORT_NUM_PORTS * sizeof(cvmx_mgmt_port_state_t));
}
else
{
cvmx_bootmem_named_block_desc_t *block_desc = cvmx_bootmem_find_named_block(alloc_name);
if (block_desc)
cvmx_mgmt_port_state_ptr = cvmx_phys_to_ptr(block_desc->base_addr);
else
{
cvmx_dprintf("ERROR: cvmx_mgmt_port_initialize: Unable to get named block %s.\n", alloc_name);
return CVMX_MGMT_PORT_NO_MEMORY;
}
}
/* Reset the MIX block if the previous user had a different TX ring size, or if
** we allocated a new (and blank) state structure. */
mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
if (!mix_ctl.s.reset)
{
oring1.u64 = cvmx_read_csr(CVMX_MIXX_ORING1(port));
if (oring1.s.osize != CVMX_MGMT_PORT_NUM_TX_BUFFERS || cvmx_mgmt_port_state_ptr[port].tx_ring[0].u64 == 0)
{
mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
mix_ctl.s.en = 0;
cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
do
{
mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
} while (mix_ctl.s.busy);
mix_ctl.s.reset = 1;
cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
cvmx_read_csr(CVMX_MIXX_CTL(port));
memset(cvmx_mgmt_port_state_ptr + port, 0, sizeof(cvmx_mgmt_port_state_t));
}
}
if (cvmx_mgmt_port_state_ptr[port].tx_ring[0].u64 == 0)
{
cvmx_mgmt_port_state_t *state = cvmx_mgmt_port_state_ptr + port;
int i;
cvmx_mixx_bist_t mix_bist;
cvmx_agl_gmx_bist_t agl_gmx_bist;
cvmx_mixx_oring1_t oring1;
cvmx_mixx_iring1_t iring1;
cvmx_mixx_ctl_t mix_ctl;
/* Make sure BIST passed */
mix_bist.u64 = cvmx_read_csr(CVMX_MIXX_BIST(port));
if (mix_bist.u64)
cvmx_dprintf("WARNING: cvmx_mgmt_port_initialize: Managment port MIX failed BIST (0x%016llx)\n", CAST64(mix_bist.u64));
agl_gmx_bist.u64 = cvmx_read_csr(CVMX_AGL_GMX_BIST);
if (agl_gmx_bist.u64)
cvmx_dprintf("WARNING: cvmx_mgmt_port_initialize: Managment port AGL failed BIST (0x%016llx)\n", CAST64(agl_gmx_bist.u64));
/* Clear all state information */
memset(state, 0, sizeof(*state));
/* Take the control logic out of reset */
mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
mix_ctl.s.reset = 0;
cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
/* Set the PHY address */
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
state->phy_id = -1;
else
state->phy_id = port; /* Will need to be change to match the board */
/* Create a default MAC address */
state->mac = 0x000000dead000000ull;
state->mac += 0xffffff & CAST64(state);
/* Setup the TX ring */
for (i=0; i<CVMX_MGMT_PORT_NUM_TX_BUFFERS; i++)
{
state->tx_ring[i].s.len = CVMX_MGMT_PORT_TX_BUFFER_SIZE;
state->tx_ring[i].s.addr = cvmx_ptr_to_phys(state->tx_buffers[i]);
}
/* Tell the HW where the TX ring is */
oring1.u64 = 0;
oring1.s.obase = cvmx_ptr_to_phys(state->tx_ring)>>3;
oring1.s.osize = CVMX_MGMT_PORT_NUM_TX_BUFFERS;
CVMX_SYNCWS;
cvmx_write_csr(CVMX_MIXX_ORING1(port), oring1.u64);
/* Setup the RX ring */
for (i=0; i<CVMX_MGMT_PORT_NUM_RX_BUFFERS; i++)
{
/* This size is -8 due to an errata for CN56XX pass 1 */
state->rx_ring[i].s.len = CVMX_MGMT_PORT_RX_BUFFER_SIZE - 8;
state->rx_ring[i].s.addr = cvmx_ptr_to_phys(state->rx_buffers[i]);
}
/* Tell the HW where the RX ring is */
iring1.u64 = 0;
iring1.s.ibase = cvmx_ptr_to_phys(state->rx_ring)>>3;
iring1.s.isize = CVMX_MGMT_PORT_NUM_RX_BUFFERS;
CVMX_SYNCWS;
cvmx_write_csr(CVMX_MIXX_IRING1(port), iring1.u64);
cvmx_write_csr(CVMX_MIXX_IRING2(port), CVMX_MGMT_PORT_NUM_RX_BUFFERS);
/* Disable the external input/output */
cvmx_mgmt_port_disable(port);
/* Set the MAC address filtering up */
cvmx_mgmt_port_set_mac(port, state->mac);
/* Set the default max size to an MTU of 1500 with L2 and VLAN */
cvmx_mgmt_port_set_max_packet_size(port, 1518);
/* Enable the port HW. Packets are not allowed until cvmx_mgmt_port_enable() is called */
mix_ctl.u64 = 0;
mix_ctl.s.crc_strip = 1; /* Strip the ending CRC */
mix_ctl.s.en = 1; /* Enable the port */
mix_ctl.s.nbtarb = 0; /* Arbitration mode */
mix_ctl.s.mrq_hwm = 1; /* MII CB-request FIFO programmable high watermark */
cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) || OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X))
{
/* Force compensation values, as they are not determined properly by HW */
cvmx_agl_gmx_drv_ctl_t drv_ctl;
drv_ctl.u64 = cvmx_read_csr(CVMX_AGL_GMX_DRV_CTL);
if (port)
{
drv_ctl.s.byp_en1 = 1;
drv_ctl.s.nctl1 = 6;
drv_ctl.s.pctl1 = 6;
}
else
{
drv_ctl.s.byp_en = 1;
drv_ctl.s.nctl = 6;
drv_ctl.s.pctl = 6;
}
cvmx_write_csr(CVMX_AGL_GMX_DRV_CTL, drv_ctl.u64);
}
}
return CVMX_MGMT_PORT_SUCCESS;
}
/**
* Shutdown a management port. This currently disables packet IO
* but leaves all hardware and buffers. Another application can then
* call initialize() without redoing the hardware setup.
*
* @param port Management port
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_shutdown(int port)
{
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
/* Stop packets from comming in */
cvmx_mgmt_port_disable(port);
/* We don't free any memory so the next intialize can reuse the HW setup */
return CVMX_MGMT_PORT_SUCCESS;
}
/**
* Enable packet IO on a management port
*
* @param port Management port
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_enable(int port)
{
cvmx_mgmt_port_state_t *state;
cvmx_agl_gmx_prtx_cfg_t agl_gmx_prtx;
cvmx_agl_gmx_inf_mode_t agl_gmx_inf_mode;
cvmx_agl_gmx_rxx_frm_ctl_t rxx_frm_ctl;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
rxx_frm_ctl.u64 = 0;
rxx_frm_ctl.s.pre_align = 1;
rxx_frm_ctl.s.pad_len = 1; /* When set, disables the length check for non-min sized pkts with padding in the client data */
rxx_frm_ctl.s.vlan_len = 1; /* When set, disables the length check for VLAN pkts */
rxx_frm_ctl.s.pre_free = 1; /* When set, PREAMBLE checking is less strict */
rxx_frm_ctl.s.ctl_smac = 0; /* Control Pause Frames can match station SMAC */
rxx_frm_ctl.s.ctl_mcst = 1; /* Control Pause Frames can match globally assign Multicast address */
rxx_frm_ctl.s.ctl_bck = 1; /* Forward pause information to TX block */
rxx_frm_ctl.s.ctl_drp = 1; /* Drop Control Pause Frames */
rxx_frm_ctl.s.pre_strp = 1; /* Strip off the preamble */
rxx_frm_ctl.s.pre_chk = 1; /* This port is configured to send PREAMBLE+SFD to begin every frame. GMX checks that the PREAMBLE is sent correctly */
cvmx_write_csr(CVMX_AGL_GMX_RXX_FRM_CTL(port), rxx_frm_ctl.u64);
/* Enable the AGL block */
agl_gmx_inf_mode.u64 = 0;
agl_gmx_inf_mode.s.en = 1;
cvmx_write_csr(CVMX_AGL_GMX_INF_MODE, agl_gmx_inf_mode.u64);
/* Configure the port duplex and enables */
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
agl_gmx_prtx.s.tx_en = 1;
agl_gmx_prtx.s.rx_en = 1;
if (cvmx_mgmt_port_get_link(port) < 0)
agl_gmx_prtx.s.duplex = 0;
else
agl_gmx_prtx.s.duplex = 1;
agl_gmx_prtx.s.en = 1;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
cvmx_spinlock_unlock(&state->lock);
return CVMX_MGMT_PORT_SUCCESS;
}
/**
* Disable packet IO on a management port
*
* @param port Management port
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_disable(int port)
{
cvmx_mgmt_port_state_t *state;
cvmx_agl_gmx_prtx_cfg_t agl_gmx_prtx;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
agl_gmx_prtx.s.en = 0;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
cvmx_spinlock_unlock(&state->lock);
return CVMX_MGMT_PORT_SUCCESS;
}
/**
* Send a packet out the management port. The packet is copied so
* the input buffer isn't used after this call.
*
* @param port Management port
* @param packet_len Length of the packet to send. It does not include the final CRC
* @param buffer Packet data
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_send(int port, int packet_len, void *buffer)
{
cvmx_mgmt_port_state_t *state;
cvmx_mixx_oring2_t mix_oring2;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
/* Max sure the packet size is valid */
if ((packet_len < 1) || (packet_len > CVMX_MGMT_PORT_TX_BUFFER_SIZE))
return CVMX_MGMT_PORT_INVALID_PARAM;
if (buffer == NULL)
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
mix_oring2.u64 = cvmx_read_csr(CVMX_MIXX_ORING2(port));
if (mix_oring2.s.odbell >= CVMX_MGMT_PORT_NUM_TX_BUFFERS - 1)
{
/* No room for another packet */
cvmx_spinlock_unlock(&state->lock);
return CVMX_MGMT_PORT_NO_MEMORY;
}
else
{
/* Copy the packet into the output buffer */
memcpy(state->tx_buffers[state->tx_write_index], buffer, packet_len);
/* Insert the source MAC */
memcpy(state->tx_buffers[state->tx_write_index] + 6, ((char*)&state->mac) + 2, 6);
/* Update the TX ring buffer entry size */
state->tx_ring[state->tx_write_index].s.len = packet_len;
/* Increment our TX index */
state->tx_write_index = (state->tx_write_index + 1) % CVMX_MGMT_PORT_NUM_TX_BUFFERS;
/* Ring the doorbell, send ing the packet */
CVMX_SYNCWS;
cvmx_write_csr(CVMX_MIXX_ORING2(port), 1);
if (cvmx_read_csr(CVMX_MIXX_ORCNT(port)))
cvmx_write_csr(CVMX_MIXX_ORCNT(port), cvmx_read_csr(CVMX_MIXX_ORCNT(port)));
cvmx_spinlock_unlock(&state->lock);
return CVMX_MGMT_PORT_SUCCESS;
}
}
/**
* Receive a packet from the management port.
*
* @param port Management port
* @param buffer_len Size of the buffer to receive the packet into
* @param buffer Buffer to receive the packet into
*
* @return The size of the packet, or a negative erorr code on failure. Zero
* means that no packets were available.
*/
int cvmx_mgmt_port_receive(int port, int buffer_len, void *buffer)
{
cvmx_mixx_ircnt_t mix_ircnt;
cvmx_mgmt_port_state_t *state;
int result;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
/* Max sure the buffer size is valid */
if (buffer_len < 1)
return CVMX_MGMT_PORT_INVALID_PARAM;
if (buffer == NULL)
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
/* Find out how many RX packets are pending */
mix_ircnt.u64 = cvmx_read_csr(CVMX_MIXX_IRCNT(port));
if (mix_ircnt.s.ircnt)
{
void *source = state->rx_buffers[state->rx_read_index];
uint64_t *zero_check = source;
/* CN56XX pass 1 has an errata where packets might start 8 bytes
into the buffer instead of at their correct lcoation. If the
first 8 bytes is zero we assume this has happened */
if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) && (*zero_check == 0))
source += 8;
/* Start off with zero bytes received */
result = 0;
/* While the completion code signals more data, copy the buffers
into the user's data */
while (state->rx_ring[state->rx_read_index].s.code == 16)
{
/* Only copy what will fit in the user's buffer */
int length = state->rx_ring[state->rx_read_index].s.len;
if (length > buffer_len)
length = buffer_len;
memcpy(buffer, source, length);
/* Reduce the size of the buffer to the remaining space. If we run
out we will signal an error when the code 15 buffer doesn't fit */
buffer += length;
buffer_len -= length;
result += length;
/* Update this buffer for reuse in future receives. This size is
-8 due to an errata for CN56XX pass 1 */
state->rx_ring[state->rx_read_index].s.code = 0;
state->rx_ring[state->rx_read_index].s.len = CVMX_MGMT_PORT_RX_BUFFER_SIZE - 8;
state->rx_read_index = (state->rx_read_index + 1) % CVMX_MGMT_PORT_NUM_RX_BUFFERS;
/* Zero the beginning of the buffer for use by the errata check */
*zero_check = 0;
CVMX_SYNCWS;
/* Increment the number of RX buffers */
cvmx_write_csr(CVMX_MIXX_IRING2(port), 1);
source = state->rx_buffers[state->rx_read_index];
zero_check = source;
}
/* Check for the final good completion code */
if (state->rx_ring[state->rx_read_index].s.code == 15)
{
if (buffer_len >= state->rx_ring[state->rx_read_index].s.len)
{
int length = state->rx_ring[state->rx_read_index].s.len;
memcpy(buffer, source, length);
result += length;
}
else
{
/* Not enough room for the packet */
cvmx_dprintf("ERROR: cvmx_mgmt_port_receive: Packet (%d) larger than supplied buffer (%d)\n", state->rx_ring[state->rx_read_index].s.len, buffer_len);
result = CVMX_MGMT_PORT_NO_MEMORY;
}
}
else
{
cvmx_agl_gmx_prtx_cfg_t agl_gmx_prtx;
cvmx_dprintf("ERROR: cvmx_mgmt_port_receive: Receive error code %d. Packet dropped(Len %d), \n",
state->rx_ring[state->rx_read_index].s.code, state->rx_ring[state->rx_read_index].s.len + result);
result = -state->rx_ring[state->rx_read_index].s.code;
/* Check to see if we need to change the duplex. */
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
if (cvmx_mgmt_port_get_link(port) < 0)
agl_gmx_prtx.s.duplex = 0;
else
agl_gmx_prtx.s.duplex = 1;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
}
/* Clean out the ring buffer entry. This size is -8 due to an errata
for CN56XX pass 1 */
state->rx_ring[state->rx_read_index].s.code = 0;
state->rx_ring[state->rx_read_index].s.len = CVMX_MGMT_PORT_RX_BUFFER_SIZE - 8;
state->rx_read_index = (state->rx_read_index + 1) % CVMX_MGMT_PORT_NUM_RX_BUFFERS;
/* Zero the beginning of the buffer for use by the errata check */
*zero_check = 0;
CVMX_SYNCWS;
/* Increment the number of RX buffers */
cvmx_write_csr(CVMX_MIXX_IRING2(port), 1);
/* Decrement the pending RX count */
cvmx_write_csr(CVMX_MIXX_IRCNT(port), 1);
}
else
{
/* No packets available */
result = 0;
}
cvmx_spinlock_unlock(&state->lock);
return result;
}
/**
* Get the management port link status:
* 100 = 100Mbps, full duplex
* 10 = 10Mbps, full duplex
* 0 = Link down
* -10 = 10Mpbs, half duplex
* -100 = 100Mbps, half duplex
*
* @param port Management port
*
* @return
*/
int cvmx_mgmt_port_get_link(int port)
{
cvmx_mgmt_port_state_t *state;
int phy_status;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
/* Assume 100Mbps if we don't know the PHY address */
if (state->phy_id == -1)
return 100;
/* read BCM phy MDIO aux status summary register */
phy_status = cvmx_mdio_read(state->phy_id >> 8, state->phy_id & 0xff,
0x19);
/* check the link status first */
if ((phy_status & 0x8000) == 0)
return 0;
switch ((phy_status >> 8) & 0x7)
{
case 0:
/* link down */
return 0;
case 1:
/* 10 half */
return -10;
case 2:
/* 10 full */
return 10;
case 3:
/* 100 half */
return -100;
case 4:
/* 100 T4 */
return 100;
case 5:
/* 100 full */
return 100;
case 6:
/* 1000 half */
return -1000;
case 7:
/* 1000 full */
return 1000;
}
/* something's amiss if we get here... */
return 0;
}
/**
* Set the MAC address for a management port
*
* @param port Management port
* @param mac New MAC address. The lower 6 bytes are used.
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_set_mac(int port, uint64_t mac)
{
cvmx_mgmt_port_state_t *state;
cvmx_agl_gmx_rxx_adr_ctl_t agl_gmx_rxx_adr_ctl;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
agl_gmx_rxx_adr_ctl.u64 = 0;
agl_gmx_rxx_adr_ctl.s.cam_mode = 1; /* Only accept matching MAC addresses */
agl_gmx_rxx_adr_ctl.s.mcst = 0; /* Drop multicast */
agl_gmx_rxx_adr_ctl.s.bcst = 1; /* Allow broadcast */
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CTL(port), agl_gmx_rxx_adr_ctl.u64);
/* Only using one of the CAMs */
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM0(port), (mac >> 40) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM1(port), (mac >> 32) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM2(port), (mac >> 24) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM3(port), (mac >> 16) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM4(port), (mac >> 8) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM5(port), (mac >> 0) & 0xff);
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM_EN(port), 1);
state->mac = mac;
cvmx_spinlock_unlock(&state->lock);
return CVMX_MGMT_PORT_SUCCESS;
}
/**
* Get the MAC address for a management port
*
* @param port Management port
*
* @return MAC address
*/
uint64_t cvmx_mgmt_port_get_mac(int port)
{
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return CVMX_MGMT_PORT_INVALID_PARAM;
return cvmx_mgmt_port_state_ptr[port].mac;
}
/**
* Set the multicast list.
*
* @param port Management port
* @param flags Interface flags
*
* @return
*/
void cvmx_mgmt_port_set_multicast_list(int port, int flags)
{
cvmx_mgmt_port_state_t *state;
cvmx_agl_gmx_rxx_adr_ctl_t agl_gmx_rxx_adr_ctl;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
agl_gmx_rxx_adr_ctl.u64 = cvmx_read_csr(CVMX_AGL_GMX_RXX_ADR_CTL(port));
/* Allow broadcast MAC addresses */
if (!agl_gmx_rxx_adr_ctl.s.bcst)
agl_gmx_rxx_adr_ctl.s.bcst = 1;
if ((flags & CVMX_IFF_ALLMULTI) || (flags & CVMX_IFF_PROMISC))
agl_gmx_rxx_adr_ctl.s.mcst = 2; /* Force accept multicast packets */
else
agl_gmx_rxx_adr_ctl.s.mcst = 1; /* Force reject multicast packets */
if (flags & CVMX_IFF_PROMISC)
agl_gmx_rxx_adr_ctl.s.cam_mode = 0; /* Reject matches if promisc. Since CAM is shut off, should accept everything */
else
agl_gmx_rxx_adr_ctl.s.cam_mode = 1; /* Filter packets based on the CAM */
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CTL(port), agl_gmx_rxx_adr_ctl.u64);
if (flags & CVMX_IFF_PROMISC)
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM_EN(port), 0);
else
cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM_EN(port), 1);
cvmx_spinlock_unlock(&state->lock);
}
/**
* Set the maximum packet allowed in. Size is specified
* including L2 but without FCS. A normal MTU would corespond
* to 1514 assuming the standard 14 byte L2 header.
*
* @param port Management port
* @param size_without_fcs
* Size in bytes without FCS
*/
void cvmx_mgmt_port_set_max_packet_size(int port, int size_without_fcs)
{
cvmx_mgmt_port_state_t *state;
if ((port < 0) || (port >= __cvmx_mgmt_port_num_ports()))
return;
state = cvmx_mgmt_port_state_ptr + port;
cvmx_spinlock_lock(&state->lock);
cvmx_write_csr(CVMX_AGL_GMX_RXX_FRM_MAX(port), size_without_fcs);
cvmx_write_csr(CVMX_AGL_GMX_RXX_JABBER(port), (size_without_fcs+7) & 0xfff8);
cvmx_spinlock_unlock(&state->lock);
}
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