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freebsd-dev/sys/contrib/octeon-sdk/cvmx-helper-xaui.c
Juli Mallett cea2b8b915 Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive 
library:
o) Increase inline unit / large function growth limits for MIPS to accommodate
   the needs of the Simple Executive, which uses a shocking amount of inlining.
o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and
   the Octeon SoC.
o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific
   board numbers, specifically to support the MR320.
o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd,
   which improperly uses an evaluation board's board number and breaks board
   detection at runtime.  This board is sold by Portwell as the CAM-0100.
o) Add support for the RTC available on some Octeon boards.
o) Add support for the Octeon PCI bus.  Note that rman_[sg]et_virtual for IO
   ports can not work unless building for n64.
o) Clean up the CompactFlash driver to use Simple Executive macros and
   structures where possible (it would be advisable to use the Simple Executive
   API to set the PIO mode, too, but that is not done presently.)  Also use
   structures from FreeBSD's ATA layer rather than structures copied from
   Linux.
o) Print available Octeon SoC features on boot.
o) Add support for the Octeon timecounter.
o) Use the Simple Executive's routines rather than local copies for doing reads
   and writes to 64-bit addresses and use its macros for various device
   addresses rather than using local copies.
o) Rename octeon_board_real to octeon_is_simulation to reduce differences with
   Cavium-provided code originally written for Linux.  Also make it use the
   same simplified test that the Simple Executive and Linux both use rather
   than our complex one.
o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus
   to use normal interrupt allocation and setup routines.
o) Use the Simple Executive's bootmem facility to allocate physical memory for
   the kernel, rather than assuming we know which addresses we can steal.
   NB: This may reduce the amount of RAM the kernel reports you as having if
       you are leaving large temporary allocations made by U-Boot allocated
       when starting FreeBSD.
o) Add a port of the Cavium-provided Ethernet driver for Linux.  This changes
   Ethernet interface naming from rgmxN to octeN.  The new driver has vast
   improvements over the old one, both in performance and functionality, but
   does still have some features which have not been ported entirely and there
   may be unimplemented code that can be hit in everyday use.  I will make
   every effort to correct those as they are reported.
o) Support loading the kernel on non-contiguous cores.
o) Add very conservative support for harvesting randomness from the Octeon
   random number device.
o) Turn SMP on by default.
o) Clean up the style of the Octeon kernel configurations a little and make
   them compile with -march=octeon.
o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple
   Executive.
o) Modify the Simple Executive to build on FreeBSD and to build without
   executive-config.h or cvmx-config.h.  In the future we may want to
   revert part of these changes and supply executive-config.h and
   cvmx-config.h and access to the options contained in those files via
   kernel configuration files.
o) Modify the Simple Executive USB routines to support getting and setting
   of the USB PID.
2010-07-20 19:25:11 +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
*
* Functions for XAUI initialization, configuration,
* and monitoring.
*
* <hr>$Revision: 42417 $<hr>
*/
#include "cvmx.h"
#include "cvmx-helper.h"
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
/**
* @INTERNAL
* Probe a XAUI interface and determine the number of ports
* connected to it. The XAUI interface should still be down
* after this call.
*
* @param interface Interface to probe
*
* @return Number of ports on the interface. Zero to disable.
*/
int __cvmx_helper_xaui_probe(int interface)
{
int i;
cvmx_gmxx_hg2_control_t gmx_hg2_control;
cvmx_gmxx_inf_mode_t mode;
/* Due to errata GMX-700 on CN56XXp1.x and CN52XXp1.x, the interface
needs to be enabled before IPD otherwise per port backpressure
may not work properly */
mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
mode.s.en = 1;
cvmx_write_csr(CVMX_GMXX_INF_MODE(interface), mode.u64);
__cvmx_helper_setup_gmx(interface, 1);
/* Setup PKO to support 16 ports for HiGig2 virtual ports. We're pointing
all of the PKO packet ports for this interface to the XAUI. This allows
us to use HiGig2 backpressure per port */
for (i=0; i<16; i++)
{
cvmx_pko_mem_port_ptrs_t pko_mem_port_ptrs;
pko_mem_port_ptrs.u64 = 0;
/* We set each PKO port to have equal priority in a round robin
fashion */
pko_mem_port_ptrs.s.static_p = 0;
pko_mem_port_ptrs.s.qos_mask = 0xff;
/* All PKO ports map to the same XAUI hardware port */
pko_mem_port_ptrs.s.eid = interface*4;
pko_mem_port_ptrs.s.pid = interface*16 + i;
cvmx_write_csr(CVMX_PKO_MEM_PORT_PTRS, pko_mem_port_ptrs.u64);
}
/* If HiGig2 is enabled return 16 ports, otherwise return 1 port */
gmx_hg2_control.u64 = cvmx_read_csr(CVMX_GMXX_HG2_CONTROL(interface));
if (gmx_hg2_control.s.hg2tx_en)
return 16;
else
return 1;
}
/**
* @INTERNAL
* Bringup and enable a XAUI interface. After this call packet
* I/O should be fully functional. This is called with IPD
* enabled but PKO disabled.
*
* @param interface Interface to bring up
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_xaui_enable(int interface)
{
cvmx_gmxx_prtx_cfg_t gmx_cfg;
cvmx_pcsxx_control1_reg_t xauiCtl;
cvmx_pcsxx_misc_ctl_reg_t xauiMiscCtl;
cvmx_gmxx_tx_xaui_ctl_t gmxXauiTxCtl;
cvmx_gmxx_rxx_int_en_t gmx_rx_int_en;
cvmx_gmxx_tx_int_en_t gmx_tx_int_en;
cvmx_pcsxx_int_en_reg_t pcsx_int_en_reg;
/* (1) Interface has already been enabled. */
/* (2) Disable GMX. */
xauiMiscCtl.u64 = cvmx_read_csr(CVMX_PCSXX_MISC_CTL_REG(interface));
xauiMiscCtl.s.gmxeno = 1;
cvmx_write_csr (CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64);
/* (3) Disable GMX and PCSX interrupts. */
gmx_rx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_EN(0,interface));
cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0,interface), 0x0);
gmx_tx_int_en.u64 = cvmx_read_csr(CVMX_GMXX_TX_INT_EN(interface));
cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), 0x0);
pcsx_int_en_reg.u64 = cvmx_read_csr(CVMX_PCSXX_INT_EN_REG(interface));
cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), 0x0);
/* (4) Bring up the PCSX and GMX reconciliation layer. */
/* (4)a Set polarity and lane swapping. */
/* (4)b */
gmxXauiTxCtl.u64 = cvmx_read_csr (CVMX_GMXX_TX_XAUI_CTL(interface));
gmxXauiTxCtl.s.dic_en = 1; /* Enable better IFG packing and improves performance */
gmxXauiTxCtl.s.uni_en = 0;
cvmx_write_csr (CVMX_GMXX_TX_XAUI_CTL(interface), gmxXauiTxCtl.u64);
/* (4)c Aply reset sequence */
xauiCtl.u64 = cvmx_read_csr (CVMX_PCSXX_CONTROL1_REG(interface));
xauiCtl.s.lo_pwr = 0;
xauiCtl.s.reset = 1;
cvmx_write_csr (CVMX_PCSXX_CONTROL1_REG(interface), xauiCtl.u64);
/* Wait for PCS to come out of reset */
if (CVMX_WAIT_FOR_FIELD64(CVMX_PCSXX_CONTROL1_REG(interface), cvmx_pcsxx_control1_reg_t, reset, ==, 0, 10000))
return -1;
/* Wait for PCS to be aligned */
if (CVMX_WAIT_FOR_FIELD64(CVMX_PCSXX_10GBX_STATUS_REG(interface), cvmx_pcsxx_10gbx_status_reg_t, alignd, ==, 1, 10000))
return -1;
/* Wait for RX to be ready */
if (CVMX_WAIT_FOR_FIELD64(CVMX_GMXX_RX_XAUI_CTL(interface), cvmx_gmxx_rx_xaui_ctl_t, status, ==, 0, 10000))
return -1;
/* (6) Configure GMX */
gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
gmx_cfg.s.en = 0;
cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
/* Wait for GMX RX to be idle */
if (CVMX_WAIT_FOR_FIELD64(CVMX_GMXX_PRTX_CFG(0, interface), cvmx_gmxx_prtx_cfg_t, rx_idle, ==, 1, 10000))
return -1;
/* Wait for GMX TX to be idle */
if (CVMX_WAIT_FOR_FIELD64(CVMX_GMXX_PRTX_CFG(0, interface), cvmx_gmxx_prtx_cfg_t, tx_idle, ==, 1, 10000))
return -1;
/* GMX configure */
gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
gmx_cfg.s.speed = 1;
gmx_cfg.s.speed_msb = 0;
gmx_cfg.s.slottime = 1;
cvmx_write_csr(CVMX_GMXX_TX_PRTS(interface), 1);
cvmx_write_csr(CVMX_GMXX_TXX_SLOT(0, interface), 512);
cvmx_write_csr(CVMX_GMXX_TXX_BURST(0, interface), 8192);
cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
/* (7) Clear out any error state */
cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(0,interface), cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(0,interface)));
cvmx_write_csr(CVMX_GMXX_TX_INT_REG(interface), cvmx_read_csr(CVMX_GMXX_TX_INT_REG(interface)));
cvmx_write_csr(CVMX_PCSXX_INT_REG(interface), cvmx_read_csr(CVMX_PCSXX_INT_REG(interface)));
/* Wait for receive link */
if (CVMX_WAIT_FOR_FIELD64(CVMX_PCSXX_STATUS1_REG(interface), cvmx_pcsxx_status1_reg_t, rcv_lnk, ==, 1, 10000))
return -1;
if (CVMX_WAIT_FOR_FIELD64(CVMX_PCSXX_STATUS2_REG(interface), cvmx_pcsxx_status2_reg_t, xmtflt, ==, 0, 10000))
return -1;
if (CVMX_WAIT_FOR_FIELD64(CVMX_PCSXX_STATUS2_REG(interface), cvmx_pcsxx_status2_reg_t, rcvflt, ==, 0, 10000))
return -1;
cvmx_write_csr(CVMX_GMXX_RXX_INT_EN(0,interface), gmx_rx_int_en.u64);
cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), gmx_tx_int_en.u64);
cvmx_write_csr(CVMX_PCSXX_INT_EN_REG(interface), pcsx_int_en_reg.u64);
cvmx_helper_link_autoconf(cvmx_helper_get_ipd_port(interface, 0));
/* (8) Enable packet reception */
xauiMiscCtl.s.gmxeno = 0;
cvmx_write_csr (CVMX_PCSXX_MISC_CTL_REG(interface), xauiMiscCtl.u64);
gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(0, interface));
gmx_cfg.s.en = 1;
cvmx_write_csr(CVMX_GMXX_PRTX_CFG(0, interface), gmx_cfg.u64);
return 0;
}
/**
* @INTERNAL
* Return the link state of an IPD/PKO 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_helper_link_set().
*
* @param ipd_port IPD/PKO port to query
*
* @return Link state
*/
cvmx_helper_link_info_t __cvmx_helper_xaui_link_get(int ipd_port)
{
int interface = cvmx_helper_get_interface_num(ipd_port);
cvmx_gmxx_tx_xaui_ctl_t gmxx_tx_xaui_ctl;
cvmx_gmxx_rx_xaui_ctl_t gmxx_rx_xaui_ctl;
cvmx_pcsxx_status1_reg_t pcsxx_status1_reg;
cvmx_helper_link_info_t result;
gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface));
gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));
pcsxx_status1_reg.u64 = cvmx_read_csr(CVMX_PCSXX_STATUS1_REG(interface));
result.u64 = 0;
/* Only return a link if both RX and TX are happy */
if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0) &&
(pcsxx_status1_reg.s.rcv_lnk == 1))
{
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = 10000;
}
else
{
/* Disable GMX and PCSX interrupts. */
cvmx_write_csr (CVMX_GMXX_RXX_INT_EN(0,interface), 0x0);
cvmx_write_csr (CVMX_GMXX_TX_INT_EN(interface), 0x0);
cvmx_write_csr (CVMX_PCSXX_INT_EN_REG(interface), 0x0);
}
return result;
}
/**
* @INTERNAL
* Configure an IPD/PKO port for the specified link state. This
* function does not influence auto negotiation at the PHY level.
* The passed link state must always match the link state returned
* by cvmx_helper_link_get(). It is normally best to use
* cvmx_helper_link_autoconf() instead.
*
* @param ipd_port IPD/PKO port to configure
* @param link_info The new link state
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
{
int interface = cvmx_helper_get_interface_num(ipd_port);
cvmx_gmxx_tx_xaui_ctl_t gmxx_tx_xaui_ctl;
cvmx_gmxx_rx_xaui_ctl_t gmxx_rx_xaui_ctl;
gmxx_tx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_TX_XAUI_CTL(interface));
gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));
/* If the link shouldn't be up, then just return */
if (!link_info.s.link_up)
return 0;
/* Do nothing if both RX and TX are happy */
if ((gmxx_tx_xaui_ctl.s.ls == 0) && (gmxx_rx_xaui_ctl.s.status == 0))
return 0;
/* Bring the link up */
return __cvmx_helper_xaui_enable(interface);
}
/**
* @INTERNAL
* Configure a port for internal and/or external loopback. Internal loopback
* causes packets sent by the port to be received by Octeon. External loopback
* causes packets received from the wire to sent out again.
*
* @param ipd_port IPD/PKO port to loopback.
* @param enable_internal
* Non zero if you want internal loopback
* @param enable_external
* Non zero if you want external loopback
*
* @return Zero on success, negative on failure.
*/
extern int __cvmx_helper_xaui_configure_loopback(int ipd_port, int enable_internal, int enable_external)
{
int interface = cvmx_helper_get_interface_num(ipd_port);
cvmx_pcsxx_control1_reg_t pcsxx_control1_reg;
cvmx_gmxx_xaui_ext_loopback_t gmxx_xaui_ext_loopback;
/* Set the internal loop */
pcsxx_control1_reg.u64 = cvmx_read_csr(CVMX_PCSXX_CONTROL1_REG(interface));
pcsxx_control1_reg.s.loopbck1 = enable_internal;
cvmx_write_csr(CVMX_PCSXX_CONTROL1_REG(interface), pcsxx_control1_reg.u64);
/* Set the external loop */
gmxx_xaui_ext_loopback.u64 = cvmx_read_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface));
gmxx_xaui_ext_loopback.s.en = enable_external;
cvmx_write_csr(CVMX_GMXX_XAUI_EXT_LOOPBACK(interface), gmxx_xaui_ext_loopback.u64);
/* Take the link through a reset */
return __cvmx_helper_xaui_enable(interface);
}
#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
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