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| Current File : //compat/linux/proc/68247/cwd/sys/contrib/octeon-sdk/cvmx-mgmt-port.c |
/***********************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
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* 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;
}