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freebsd/sys/contrib/octeon-sdk/cvmx-helper-errata.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
*
* Fixes and workaround for Octeon chip errata. This file
* contains functions called by cvmx-helper to workaround known
* chip errata. For the most part, code doesn't need to call
* these functions directly.
*
* <hr>$Revision: 42150 $<hr>
*/
#include "cvmx.h"
#include "cvmx-fpa.h"
#include "cvmx-pip.h"
#include "cvmx-pko.h"
#include "cvmx-ipd.h"
#include "cvmx-asx.h"
#include "cvmx-gmx.h"
#include "cvmx-spi.h"
#include "cvmx-pow.h"
#include "cvmx-sysinfo.h"
#include "cvmx-helper.h"
#include "cvmx-helper-util.h"
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
/**
* @INTERNAL
* Function to adjust internal IPD pointer alignments
*
* @return 0 on success
* !0 on failure
*/
int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
{
#define FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES (CVMX_FPA_PACKET_POOL_SIZE-8-CVMX_HELPER_FIRST_MBUFF_SKIP)
#define FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES (CVMX_FPA_PACKET_POOL_SIZE-8-CVMX_HELPER_NOT_FIRST_MBUFF_SKIP)
#define FIX_IPD_OUTPORT 0
#define INTERFACE(port) (port >> 4) /* Ports 0-15 are interface 0, 16-31 are interface 1 */
#define INDEX(port) (port & 0xf)
uint64_t *p64;
cvmx_pko_command_word0_t pko_command;
cvmx_buf_ptr_t g_buffer, pkt_buffer;
cvmx_wqe_t *work;
int size, num_segs = 0, wqe_pcnt, pkt_pcnt;
cvmx_gmxx_prtx_cfg_t gmx_cfg;
int retry_cnt;
int retry_loop_cnt;
int mtu;
int i;
cvmx_helper_link_info_t link_info;
/* Save values for restore at end */
uint64_t prtx_cfg = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
uint64_t tx_ptr_en = cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)));
uint64_t rx_ptr_en = cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)));
uint64_t rxx_jabber = cvmx_read_csr(CVMX_GMXX_RXX_JABBER(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
uint64_t frame_max = cvmx_read_csr(CVMX_GMXX_RXX_FRM_MAX(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
/* Configure port to gig FDX as required for loopback mode */
cvmx_helper_rgmii_internal_loopback(FIX_IPD_OUTPORT);
/* Disable reception on all ports so if traffic is present it will not interfere. */
cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), 0);
cvmx_wait(100000000ull);
for (retry_loop_cnt = 0;retry_loop_cnt < 10;retry_loop_cnt++)
{
retry_cnt = 100000;
wqe_pcnt = cvmx_read_csr(CVMX_IPD_PTR_COUNT);
pkt_pcnt = (wqe_pcnt >> 7) & 0x7f;
wqe_pcnt &= 0x7f;
num_segs = (2 + pkt_pcnt - wqe_pcnt) & 3;
if (num_segs == 0)
goto fix_ipd_exit;
num_segs += 1;
size = FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES + ((num_segs-1)*FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES) -
(FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES / 2);
cvmx_write_csr(CVMX_ASXX_PRT_LOOP(INTERFACE(FIX_IPD_OUTPORT)), 1 << INDEX(FIX_IPD_OUTPORT));
CVMX_SYNC;
g_buffer.u64 = 0;
g_buffer.s.addr = cvmx_ptr_to_phys(cvmx_fpa_alloc(CVMX_FPA_WQE_POOL));
if (g_buffer.s.addr == 0) {
cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT buffer allocation failure.\n");
goto fix_ipd_exit;
}
g_buffer.s.pool = CVMX_FPA_WQE_POOL;
g_buffer.s.size = num_segs;
pkt_buffer.u64 = 0;
pkt_buffer.s.addr = cvmx_ptr_to_phys(cvmx_fpa_alloc(CVMX_FPA_PACKET_POOL));
if (pkt_buffer.s.addr == 0) {
cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT buffer allocation failure.\n");
goto fix_ipd_exit;
}
pkt_buffer.s.i = 1;
pkt_buffer.s.pool = CVMX_FPA_PACKET_POOL;
pkt_buffer.s.size = FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES;
p64 = (uint64_t*) cvmx_phys_to_ptr(pkt_buffer.s.addr);
p64[0] = 0xffffffffffff0000ull;
p64[1] = 0x08004510ull;
p64[2] = ((uint64_t)(size-14) << 48) | 0x5ae740004000ull;
p64[3] = 0x3a5fc0a81073c0a8ull;
for (i=0;i<num_segs;i++)
{
if (i>0)
pkt_buffer.s.size = FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES;
if (i==(num_segs-1))
pkt_buffer.s.i = 0;
*(uint64_t*)cvmx_phys_to_ptr(g_buffer.s.addr + 8*i) = pkt_buffer.u64;
}
/* Build the PKO command */
pko_command.u64 = 0;
pko_command.s.segs = num_segs;
pko_command.s.total_bytes = size;
pko_command.s.dontfree = 0;
pko_command.s.gather = 1;
gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
gmx_cfg.s.en = 1;
cvmx_write_csr(CVMX_GMXX_PRTX_CFG(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), gmx_cfg.u64);
cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), 1 << INDEX(FIX_IPD_OUTPORT));
cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), 1 << INDEX(FIX_IPD_OUTPORT));
mtu = cvmx_read_csr(CVMX_GMXX_RXX_JABBER(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
cvmx_write_csr(CVMX_GMXX_RXX_JABBER(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), 65392-14-4);
cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), 65392-14-4);
cvmx_pko_send_packet_prepare(FIX_IPD_OUTPORT, cvmx_pko_get_base_queue(FIX_IPD_OUTPORT), CVMX_PKO_LOCK_CMD_QUEUE);
cvmx_pko_send_packet_finish(FIX_IPD_OUTPORT, cvmx_pko_get_base_queue(FIX_IPD_OUTPORT), pko_command, g_buffer, CVMX_PKO_LOCK_CMD_QUEUE);
CVMX_SYNC;
do {
work = cvmx_pow_work_request_sync(CVMX_POW_WAIT);
retry_cnt--;
} while ((work == NULL) && (retry_cnt > 0));
if (!retry_cnt)
cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT get_work() timeout occured.\n");
/* Free packet */
if (work)
cvmx_helper_free_packet_data(work);
}
fix_ipd_exit:
/* Return CSR configs to saved values */
cvmx_write_csr(CVMX_GMXX_PRTX_CFG(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), prtx_cfg);
cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), tx_ptr_en);
cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), rx_ptr_en);
cvmx_write_csr(CVMX_GMXX_RXX_JABBER(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), rxx_jabber);
cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)), frame_max);
cvmx_write_csr(CVMX_ASXX_PRT_LOOP(INTERFACE(FIX_IPD_OUTPORT)), 0);
link_info.u64 = 0; /* Set link to down so autonegotiation will set it up again */
cvmx_helper_link_set(FIX_IPD_OUTPORT, link_info);
/* Bring the link back up as autonegotiation is not done in user applications. */
cvmx_helper_link_autoconf(FIX_IPD_OUTPORT);
CVMX_SYNC;
if (num_segs)
cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT failed.\n");
return(!!num_segs);
}
/**
* @INTERNAL
* Workaround ASX setup errata with CN38XX pass1
*
* @param interface Interface to setup
* @param port Port to setup (0..3)
* @param cpu_clock_hz
* Chip frequency in Hertz
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_errata_asx_pass1(int interface, int port, int cpu_clock_hz)
{
/* Set hi water mark as per errata GMX-4 */
if (cpu_clock_hz >= 325000000 && cpu_clock_hz < 375000000)
cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 12);
else if (cpu_clock_hz >= 375000000 && cpu_clock_hz < 437000000)
cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 11);
else if (cpu_clock_hz >= 437000000 && cpu_clock_hz < 550000000)
cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 10);
else if (cpu_clock_hz >= 550000000 && cpu_clock_hz < 687000000)
cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 9);
else
cvmx_dprintf("Illegal clock frequency (%d). CVMX_ASXX_TX_HI_WATERX not set\n", cpu_clock_hz);
return 0;
}
/**
* This function needs to be called on all Octeon chips with
* errata PKI-100.
*
* The Size field is 8 too large in WQE and next pointers
*
* The Size field generated by IPD is 8 larger than it should
* be. The Size field is <55:40> of both:
* - WORD3 in the work queue entry, and
* - the next buffer pointer (which precedes the packet data
* in each buffer).
*
* @param work Work queue entry to fix
* @return Zero on success. Negative on failure
*/
int cvmx_helper_fix_ipd_packet_chain(cvmx_wqe_t *work)
{
uint64_t number_buffers = work->word2.s.bufs;
/* We only need to do this if the work has buffers */
if (number_buffers)
{
cvmx_buf_ptr_t buffer_ptr = work->packet_ptr;
/* Check for errata PKI-100 */
if ( (buffer_ptr.s.pool == 0) && (((uint64_t)buffer_ptr.s.size +
((uint64_t)buffer_ptr.s.back << 7) + ((uint64_t)buffer_ptr.s.addr & 0x7F))
!= (CVMX_FPA_PACKET_POOL_SIZE+8))) {
/* fix is not needed */
return 0;
}
/* Decrement the work packet pointer */
buffer_ptr.s.size -= 8;
work->packet_ptr = buffer_ptr;
/* Now loop through decrementing the size for each additional buffer */
while (--number_buffers)
{
/* Chain pointers are 8 bytes before the data */
cvmx_buf_ptr_t *ptr = (cvmx_buf_ptr_t*)cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
buffer_ptr = *ptr;
buffer_ptr.s.size -= 8;
*ptr = buffer_ptr;
}
}
/* Make sure that these write go out before other operations such as FPA frees */
CVMX_SYNCWS;
return 0;
}
#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
/**
* Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
* 1 doesn't work properly. The following code disables 2nd order
* CDR for the specified QLM.
*
* @param qlm QLM to disable 2nd order CDR for.
*/
void __cvmx_helper_errata_qlm_disable_2nd_order_cdr(int qlm)
{
int lane;
cvmx_helper_qlm_jtag_init();
/* We need to load all four lanes of the QLM, a total of 1072 bits */
for (lane=0; lane<4; lane++)
{
/* Each lane has 268 bits. We need to set cfg_cdr_incx<67:64>=3 and
cfg_cdr_secord<77>=1. All other bits are zero. Bits go in LSB
first, so start off with the zeros for bits <63:0> */
cvmx_helper_qlm_jtag_shift_zeros(qlm, 63 - 0 + 1);
/* cfg_cdr_incx<67:64>=3 */
cvmx_helper_qlm_jtag_shift(qlm, 67 - 64 + 1, 3);
/* Zeros for bits <76:68> */
cvmx_helper_qlm_jtag_shift_zeros(qlm, 76 - 68 + 1);
/* cfg_cdr_secord<77>=1 */
cvmx_helper_qlm_jtag_shift(qlm, 77 - 77 + 1, 1);
/* Zeros for bits <267:78> */
cvmx_helper_qlm_jtag_shift_zeros(qlm, 267 - 78 + 1);
}
cvmx_helper_qlm_jtag_update(qlm);
}
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