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freebsd-nq/sys/contrib/octeon-sdk/cvmx-mgmt-port.c
Juli Mallett 15fe2454ae o) Expand the CIU driver to be aware of newly-allocated parts of the IRQ range. 
o) Add 'octm', a trivial driver for the 10/100 management ports found on some
   Octeon systems.
o) Make the Simple Executive's management port helper routines compile on
   FreeBSD (namely by not doing math on void pointers.)
o) Add a cvmx_mgmt_port_sendm routine to the Simple Executive to send an mbuf
   so there is only one copy in the transmit path, rather than having to first
   copy the mbuf to an intermediate buffer and then copy that to the Simple
   Executive's transmit ring.
o) Properly work out MII addresses of management ports on the Lanner MR-730.
   XXX The MR-730 also needs some patches to the MII read/write routines, but
       this is sufficient for now.  Media detection will be fixed in the future
       when I can spend more time reading the vendor-supplied patches.
2011-01-10 03:48:41 +00:00

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/***********************license start***************
* Copyright (c) 2003-2010 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.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* 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.
***********************license end**************************************/
/**
* @file
*
* Support functions for managing the MII management port
*
* <hr>$Revision: 49628 $<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"
#include "cvmx-error.h"
/**
* Enum of MIX interface modes
*/
typedef enum
{
CVMX_MGMT_PORT_NONE = 0,
CVMX_MGMT_PORT_MII_MODE,
CVMX_MGMT_PORT_RGMII_MODE,
} cvmx_mgmt_port_mode_t;
/**
* 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 tstamp : 1; /* For TX, signals that the packet should be timestamped */
uint64_t code : 7; /* 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 port; /* Port to use. (This is the 'fake' IPD port number */
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_mode_t mode; /* Mode of the interface */
} 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
*/
static int __cvmx_mgmt_port_num_ports(void)
{
if (OCTEON_IS_MODEL(OCTEON_CN56XX))
return 1;
else if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
return 2;
else
return 0;
}
/**
* Called to initialize a management port for use. Multiple calls
* to this function across 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
{
const 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 on MIX%d.\n", alloc_name, port);
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;
cvmx_agl_prtx_ctl_t agl_prtx_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) on MIX%d\n", CAST64(mix_bist.u64), port);
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) on MIX%d\n", CAST64(agl_gmx_bist.u64), port);
/* 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);
/* Read until reset == 0. Timeout should never happen... */
if (CVMX_WAIT_FOR_FIELD64(CVMX_MIXX_CTL(port), cvmx_mixx_ctl_t, reset, ==, 0, 300000000))
{
cvmx_dprintf("ERROR: cvmx_mgmt_port_initialize: Timeout waiting for MIX(%d) reset.\n", port);
return CVMX_MGMT_PORT_INIT_ERROR;
}
/* Set the PHY address and mode of the interface (RGMII/MII mode). */
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
{
state->port = -1;
state->mode = CVMX_MGMT_PORT_MII_MODE;
}
else
{
int port_num = CVMX_HELPER_BOARD_MGMT_IPD_PORT + port;
int phy_addr = cvmx_helper_board_get_mii_address(port_num);
if (phy_addr != -1)
{
cvmx_mdio_phy_reg_status_t phy_status;
/* Read PHY status register to find the mode of the interface. */
phy_status.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_STATUS);
if (phy_status.s.capable_extended_status == 0) // MII mode
state->mode = CVMX_MGMT_PORT_MII_MODE;
else if (OCTEON_IS_MODEL(OCTEON_CN6XXX)
&& phy_status.s.capable_extended_status) // RGMII mode
state->mode = CVMX_MGMT_PORT_RGMII_MODE;
else
state->mode = CVMX_MGMT_PORT_NONE;
}
else
{
cvmx_dprintf("ERROR: cvmx_mgmt_port_initialize: Not able to read the PHY on MIX%d\n", port);
return CVMX_MGMT_PORT_INVALID_PARAM;
}
state->port = port_num;
}
/* All interfaces should be configured in same mode */
for (i = 0; i < __cvmx_mgmt_port_num_ports(); i++)
{
if (i != port
&& cvmx_mgmt_port_state_ptr[i].mode != CVMX_MGMT_PORT_NONE
&& cvmx_mgmt_port_state_ptr[i].mode != state->mode)
{
cvmx_dprintf("ERROR: cvmx_mgmt_port_initialize: All ports in MIX interface are not configured in same mode.\n \
Port %d is configured as %d\n \
And Port %d is configured as %d\n", port, state->mode, i, cvmx_mgmt_port_state_ptr[i].mode);
return CVMX_MGMT_PORT_INVALID_PARAM;
}
}
/* 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);
/* Select the mode of operation for the interface. */
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
agl_prtx_ctl.u64 = cvmx_read_csr(CVMX_AGL_PRTX_CTL(port));
if (state->mode == CVMX_MGMT_PORT_RGMII_MODE)
agl_prtx_ctl.s.mode = 0;
else if (state->mode == CVMX_MGMT_PORT_MII_MODE)
agl_prtx_ctl.s.mode = 1;
else
{
cvmx_dprintf("ERROR: cvmx_mgmt_port_initialize: Invalid mode for MIX(%d)\n", port);
return CVMX_MGMT_PORT_INVALID_PARAM;
}
cvmx_write_csr(CVMX_AGL_PRTX_CTL(port), agl_prtx_ctl.u64);
}
/* Initialize the physical layer. */
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
/* MII clocks counts are based on the 125Mhz reference, so our
delays need to be scaled to match the core clock rate. The
"+1" is to make sure rounding always waits a little too
long. */
uint64_t clock_scale = cvmx_clock_get_rate(CVMX_CLOCK_CORE) / 125000000 + 1;
/* Take the DLL and clock tree out of reset */
agl_prtx_ctl.u64 = cvmx_read_csr(CVMX_AGL_PRTX_CTL(port));
agl_prtx_ctl.s.clkrst = 0;
if (state->mode == CVMX_MGMT_PORT_RGMII_MODE) // RGMII Initialization
{
agl_prtx_ctl.s.dllrst = 0;
agl_prtx_ctl.s.clktx_byp = 0;
}
cvmx_write_csr(CVMX_AGL_PRTX_CTL(port), agl_prtx_ctl.u64);
cvmx_read_csr(CVMX_AGL_PRTX_CTL(port)); /* Force write out before wait */
/* Wait for the DLL to lock. External 125 MHz reference clock must be stable at this point. */
cvmx_wait(256 * clock_scale);
/* The rest of the config is common between RGMII/MII */
/* Enable the interface */
agl_prtx_ctl.u64 = cvmx_read_csr(CVMX_AGL_PRTX_CTL(port));
agl_prtx_ctl.s.enable = 1;
cvmx_write_csr(CVMX_AGL_PRTX_CTL(port), agl_prtx_ctl.u64);
/* Read the value back to force the previous write */
agl_prtx_ctl.u64 = cvmx_read_csr(CVMX_AGL_PRTX_CTL(port));
/* Enable the componsation controller */
agl_prtx_ctl.s.comp = 1;
cvmx_write_csr(CVMX_AGL_PRTX_CTL(port), agl_prtx_ctl.u64);
cvmx_read_csr(CVMX_AGL_PRTX_CTL(port)); /* Force write out before wait */
cvmx_wait(1024 * clock_scale); // for componsation state to lock.
}
else 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);
}
}
cvmx_error_enable_group(CVMX_ERROR_GROUP_MGMT_PORT, port);
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;
cvmx_error_disable_group(CVMX_ERROR_GROUP_MGMT_PORT, port);
/* 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_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 */
if (OCTEON_IS_MODEL(OCTEON_CN5XXX))
{
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 */
cvmx_mgmt_port_link_set(port, cvmx_mgmt_port_link_get(port));
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;
/* This code doesn't support TX timestamps */
state->tx_ring[state->tx_write_index].s.tstamp = 0;
/* Increment our TX index */
state->tx_write_index = (state->tx_write_index + 1) % CVMX_MGMT_PORT_NUM_TX_BUFFERS;
/* Ring the doorbell, sending 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;
}
}
#if defined(__FreeBSD__)
/**
* Send a packet out the management port. The packet is copied so
* the input mbuf isn't used after this call.
*
* @param port Management port
* @param m Packet mbuf (with pkthdr)
*
* @return CVMX_MGMT_PORT_SUCCESS or an error code
*/
cvmx_mgmt_port_result_t cvmx_mgmt_port_sendm(int port, const struct mbuf *m)
{
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 ((m->m_pkthdr.len < 1) || (m->m_pkthdr.len > CVMX_MGMT_PORT_TX_BUFFER_SIZE))
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 */
m_copydata(m, 0, m->m_pkthdr.len, state->tx_buffers[state->tx_write_index]);
/* Update the TX ring buffer entry size */
state->tx_ring[state->tx_write_index].s.len = m->m_pkthdr.len;
/* This code doesn't support TX timestamps */
state->tx_ring[state->tx_write_index].s.tstamp = 0;
/* Increment our TX index */
state->tx_write_index = (state->tx_write_index + 1) % CVMX_MGMT_PORT_NUM_TX_BUFFERS;
/* Ring the doorbell, sending 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;
}
}
#endif
/**
* 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, uint8_t *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)
{
uint64_t *source = (void *)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++;
/* 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 = (void *)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_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. */
cvmx_mgmt_port_link_set(port, cvmx_mgmt_port_link_get(port));
}
/* 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;
}
/**
* 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);
}
/**
* Return the link state of an RGMII/MII port as returned by
* auto negotiation. The result of this function may not match
* Octeon's link config if auto negotiation has changed since
* the last call to cvmx_mgmt_port_link_set().
*
* @param port The RGMII/MII interface port to query
*
* @return Link state
*/
cvmx_helper_link_info_t cvmx_mgmt_port_link_get(int port)
{
cvmx_mgmt_port_state_t *state;
cvmx_helper_link_info_t result;
state = cvmx_mgmt_port_state_ptr + port;
result.u64 = 0;
if (port > __cvmx_mgmt_port_num_ports())
{
cvmx_dprintf("WARNING: Invalid port %d\n", port);
return result;
}
if (state->port != -1)
return __cvmx_helper_board_link_get(state->port);
else // Simulator does not have PHY, use some defaults.
{
result.s.full_duplex = 1;
result.s.link_up = 1;
result.s.speed = 100;
return result;
}
return result;
}
/**
* Configure RGMII/MII port for the specified link state. This
* function does not influence auto negotiation at the PHY level.
*
* @param port RGMII/MII interface port
* @param link_info The new link state
*
* @return Zero on success, negative on failure
*/
int cvmx_mgmt_port_link_set(int port, cvmx_helper_link_info_t link_info)
{
cvmx_agl_gmx_prtx_cfg_t agl_gmx_prtx;
/* Disable GMX before we make any changes. */
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
agl_gmx_prtx.s.en = 0;
agl_gmx_prtx.s.tx_en = 0;
agl_gmx_prtx.s.rx_en = 0;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
uint64_t one_second = cvmx_clock_get_rate(CVMX_CLOCK_CORE);
/* Wait for GMX to be idle */
if (CVMX_WAIT_FOR_FIELD64(CVMX_AGL_GMX_PRTX_CFG(port), cvmx_agl_gmx_prtx_cfg_t, rx_idle, ==, 1, one_second)
|| CVMX_WAIT_FOR_FIELD64(CVMX_AGL_GMX_PRTX_CFG(port), cvmx_agl_gmx_prtx_cfg_t, tx_idle, ==, 1, one_second))
{
cvmx_dprintf("MIX%d: Timeout waiting for GMX to be idle\n", port);
return -1;
}
}
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
/* Set duplex mode */
if (!link_info.s.link_up)
agl_gmx_prtx.s.duplex = 1; /* Force full duplex on down links */
else
agl_gmx_prtx.s.duplex = link_info.s.full_duplex;
switch(link_info.s.speed)
{
case 10:
agl_gmx_prtx.s.speed = 0;
agl_gmx_prtx.s.slottime = 0;
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
agl_gmx_prtx.s.speed_msb = 1;
agl_gmx_prtx.s.burst = 1;
}
break;
case 100:
agl_gmx_prtx.s.speed = 0;
agl_gmx_prtx.s.slottime = 0;
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
agl_gmx_prtx.s.speed_msb = 0;
agl_gmx_prtx.s.burst = 1;
}
break;
case 1000:
/* 1000 MBits is only supported on 6XXX chips */
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
agl_gmx_prtx.s.speed_msb = 0;
agl_gmx_prtx.s.speed = 1;
agl_gmx_prtx.s.slottime = 1; /* Only matters for half-duplex */
agl_gmx_prtx.s.burst = agl_gmx_prtx.s.duplex;
}
break;
/* No link */
case 0:
default:
break;
}
/* Write the new GMX setting with the port still disabled. */
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
/* Read GMX CFG again to make sure the config is completed. */
agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
cvmx_mgmt_port_state_t *state = cvmx_mgmt_port_state_ptr + port;
cvmx_agl_gmx_txx_clk_t agl_clk;
agl_clk.u64 = cvmx_read_csr(CVMX_AGL_GMX_TXX_CLK(port));
agl_clk.s.clk_cnt = 1; /* MII (both speeds) and RGMII 1000 setting */
if (state->mode == CVMX_MGMT_PORT_RGMII_MODE)
{
if (link_info.s.speed == 10)
agl_clk.s.clk_cnt = 50;
else if (link_info.s.speed == 100)
agl_clk.s.clk_cnt = 5;
}
cvmx_write_csr(CVMX_AGL_GMX_TXX_CLK(port), agl_clk.u64);
}
/* Enable transmit and receive ports */
agl_gmx_prtx.s.tx_en = 1;
agl_gmx_prtx.s.rx_en = 1;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
/* Enable the link. */
agl_gmx_prtx.s.en = 1;
cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
return 0;
}
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