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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
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Configuration functions for low latency memory.
*
* <hr>$Revision: 52372 $<hr>
*/
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-llm.h"
#include "cvmx-sysinfo.h"
#include "cvmx-csr-db.h"
#define MIN(a,b) (((a)<(b))?(a):(b))
typedef struct
{
uint32_t dfa_memcfg0_base;
uint32_t dfa_memcfg1_base;
uint32_t mrs_dat_p0bunk0;
uint32_t mrs_dat_p0bunk1;
uint32_t mrs_dat_p1bunk0;
uint32_t mrs_dat_p1bunk1;
uint8_t p0_ena;
uint8_t p1_ena;
uint8_t bunkport;
} rldram_csr_config_t;
int rld_csr_config_generate(llm_descriptor_t *llm_desc_ptr, rldram_csr_config_t *cfg_ptr);
void print_rld_cfg(rldram_csr_config_t *cfg_ptr);
void write_rld_cfg(rldram_csr_config_t *cfg_ptr);
static void cn31xx_dfa_memory_init(void);
static uint32_t process_address_map_str(uint32_t mrs_dat, char *addr_str);
#ifndef CVMX_LLM_NUM_PORTS
#warning WARNING: default CVMX_LLM_NUM_PORTS used. Defaults deprecated, please set in executive-config.h
#define CVMX_LLM_NUM_PORTS 1
#endif
#if (CVMX_LLM_NUM_PORTS != 1) && (CVMX_LLM_NUM_PORTS != 2)
#error "Invalid CVMX_LLM_NUM_PORTS value: must be 1 or 2\n"
#endif
int cvmx_llm_initialize()
{
if (cvmx_llm_initialize_desc(NULL) < 0)
return -1;
return 0;
}
int cvmx_llm_get_default_descriptor(llm_descriptor_t *llm_desc_ptr)
{
cvmx_sysinfo_t *sys_ptr;
sys_ptr = cvmx_sysinfo_get();
if (!llm_desc_ptr)
return -1;
memset(llm_desc_ptr, 0, sizeof(llm_descriptor_t));
llm_desc_ptr->cpu_hz = cvmx_clock_get_rate(CVMX_CLOCK_CORE);
if (sys_ptr->board_type == CVMX_BOARD_TYPE_EBT3000)
{ // N3K->RLD0 Address Swizzle
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 19 20 08 07 06 05 04 03 02 01 00 09 18 17 16 15 14 13 12 11 10");
// N3K->RLD1 Address Swizzle
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
/* NOTE: The ebt3000 has a strange RLDRAM configuration for validation purposes. It is not recommended to have
** different amounts of memory on different ports as that renders some memory unusable */
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128; // RLD0: 4x 32Mx9
llm_desc_ptr->rld1_mbytes = 64; // RLD1: 2x 16Mx18
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_EBT5800)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128;
llm_desc_ptr->rld1_mbytes = 128;
llm_desc_ptr->max_rld_clock_mhz = 400; /* CN58XX needs a max clock speed for selecting optimal divisor */
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_EBH3000)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 19 20 08 07 06 05 04 03 02 01 00 09 18 17 16 15 14 13 12 11 10");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 19 20 08 07 06 05 04 03 02 01 00 09 18 17 16 15 14 13 12 11 10");
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128;
llm_desc_ptr->rld1_mbytes = 128;
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_NAC38)
{
if (sys_ptr->board_rev_major == 1 && sys_ptr->board_rev_minor == 0)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 20 00 08 07 06 05 04 13 02 01 03 09 18 17 16 15 14 10 12 11 19");
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128;
llm_desc_ptr->rld1_mbytes = 128;
}
else
{ /* Asus new recommendation */
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 09 11 04 06 05 08 15 20 16 18 12 13 00 01 07 02 19 17 10 14 03");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 11 09 00 01 07 02 19 17 10 14 03 13 04 06 05 08 15 20 16 18 12");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 08 13 14 00 04 12 16 11 19 10 07 02 01 05 03 06 17 18 20 09 15");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 13 08 01 05 03 06 17 18 20 09 15 02 14 00 04 12 16 11 19 10 07");
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128;
llm_desc_ptr->rld1_mbytes = 128;
}
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_THUNDER)
{
if (sys_ptr->board_rev_major >= 4)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 13 11 01 02 07 19 03 18 10 12 20 06 04 08 17 05 14 16 00 09 15");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 11 13 04 08 17 05 14 16 00 09 15 06 01 02 07 19 03 18 10 12 20");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 02 19 18 17 16 09 14 13 20 11 10 01 08 03 06 15 04 07 05 12 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 19 02 08 03 06 15 04 07 05 12 00 01 18 17 16 09 14 13 20 11 10");
}
else
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
}
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 128;
llm_desc_ptr->rld1_mbytes = 128;
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_NICPRO2)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "22 21 19 20 08 07 06 05 04 03 02 01 00 09 18 17 16 15 14 13 12 11 10");
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 19 20 08 07 06 05 04 03 02 01 00 09 18 17 16 15 14 13 12 11 10");
llm_desc_ptr->rld0_bunks = 2;
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld0_mbytes = 256;
llm_desc_ptr->rld1_mbytes = 256;
llm_desc_ptr->max_rld_clock_mhz = 400; /* CN58XX needs a max clock speed for selecting optimal divisor */
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_EBH3100)
{
/* CN31xx DFA memory is DDR based, so it is completely different from the CN38XX DFA memory */
llm_desc_ptr->rld0_bunks = 1;
llm_desc_ptr->rld0_mbytes = 256;
}
else if (sys_ptr->board_type == CVMX_BOARD_TYPE_KBP)
{
strcpy(llm_desc_ptr->addr_rld0_fb_str, "");
strcpy(llm_desc_ptr->addr_rld0_bb_str, "");
llm_desc_ptr->rld0_bunks = 0;
llm_desc_ptr->rld0_mbytes = 0;
strcpy(llm_desc_ptr->addr_rld1_fb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
strcpy(llm_desc_ptr->addr_rld1_bb_str, "22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00");
llm_desc_ptr->rld1_bunks = 2;
llm_desc_ptr->rld1_mbytes = 64;
}
else
{
cvmx_dprintf("No default LLM configuration available for board %s (%d)\n", cvmx_board_type_to_string(sys_ptr->board_type), sys_ptr->board_type);
return -1;
}
return(0);
}
int cvmx_llm_initialize_desc(llm_descriptor_t *llm_desc_ptr)
{
cvmx_sysinfo_t *sys_ptr;
sys_ptr = cvmx_sysinfo_get();
llm_descriptor_t default_llm_desc;
memset(&default_llm_desc, 0, sizeof(default_llm_desc));
if (sys_ptr->board_type == CVMX_BOARD_TYPE_SIM)
{
cvmx_dprintf("Skipping llm configuration for simulator.\n");
return 0;
}
if (sys_ptr->board_type == CVMX_BOARD_TYPE_EBH3100)
{
/* CN31xx DFA memory is DDR based, so it is completely different from the CN38XX DFA memory
** config descriptors are not supported yet.*/
cvmx_dprintf("Warning: preliminary DFA memory configuration\n");
cn31xx_dfa_memory_init();
return(256*1024*1024);
}
/* If no descriptor passed, generate default descriptor based on board type.
** Fail if no default available for given board type
*/
if (!llm_desc_ptr)
{
/* Get default descriptor */
if (0 > cvmx_llm_get_default_descriptor(&default_llm_desc))
return -1;
/* Disable second port depending on CVMX config */
if (CVMX_LLM_NUM_PORTS == 1)
default_llm_desc.rld0_bunks = 0; // For single port: Force RLD0(P1) to appear EMPTY
cvmx_dprintf("Using default LLM configuration for board %s (%d)\n", cvmx_board_type_to_string(sys_ptr->board_type), sys_ptr->board_type);
llm_desc_ptr = &default_llm_desc;
}
rldram_csr_config_t ebt3000_rld_cfg;
if (!rld_csr_config_generate(llm_desc_ptr, &ebt3000_rld_cfg))
{
cvmx_dprintf("Configuring %d llm port(s).\n", !!llm_desc_ptr->rld0_bunks + !!llm_desc_ptr->rld1_bunks);
write_rld_cfg(&ebt3000_rld_cfg);
}
else
{
cvmx_dprintf("Error creating rldram configuration\n");
return(-1);
}
/* Compute how much memory is configured
** Memory is interleaved, so if one port has more than the other some memory is not usable */
/* If both ports are enabled, handle the case where one port has more than the other.
** This is an unusual and not recommended configuration that exists on the ebt3000 board */
if (!!llm_desc_ptr->rld0_bunks && !!llm_desc_ptr->rld1_bunks)
llm_desc_ptr->rld0_mbytes = llm_desc_ptr->rld1_mbytes = MIN(llm_desc_ptr->rld0_mbytes, llm_desc_ptr->rld1_mbytes);
return(((!!llm_desc_ptr->rld0_bunks) * llm_desc_ptr->rld0_mbytes
+ (!!llm_desc_ptr->rld1_bunks) * llm_desc_ptr->rld1_mbytes) * 1024*1024);
}
//======================
// SUPPORT FUNCTIONS:
//======================
//======================================================================
// Extracts srcvec[srcbitpos] and places it in return int (bit[0])
int bit_extract ( int srcvec, // source word (to extract)
int srcbitpos // source bit position
)
{
return(((1 << srcbitpos) & srcvec) >> srcbitpos);
}
//======================================================================
// Inserts srcvec[0] into dstvec[dstbitpos] (without affecting other bits)
int bit_insert ( int srcvec, // srcvec[0] = bit to be inserted
int dstbitpos, // Bit position to insert into returned int
int dstvec // dstvec (destination vector)
)
{
return((srcvec << dstbitpos) | dstvec); // Shift bit to insert into bit position/OR with accumulated number
}
//======================================================================
int rld_csr_config_generate(llm_descriptor_t *llm_desc_ptr, rldram_csr_config_t *cfg_ptr)
{
char *addr_rld0_fb_str;
char *addr_rld0_bb_str;
char *addr_rld1_fb_str;
char *addr_rld1_bb_str;
int eclk_ps;
int mtype = 0; // MTYPE (0: RLDRAM/1: FCRAM
int trcmin = 20; // tRC(min) - from RLDRAM data sheet
int trc_cyc; // TRC(cyc)
int trc_mod;
int trl_cyc; // TRL(cyc)
int twl_cyc; // TWL(cyc)
int tmrsc_cyc = 6; // tMRSC(cyc) [2-7]
int mclk_ps; // DFA Memory Clock(in ps) = 2x eclk
int rldcfg = 99; // RLDRAM-II CFG (1,2,3)
int mrs_odt = 0; // RLDRAM MRS A[9]=ODT (default)
int mrs_impmatch = 0; // RLDRAM MRS A[8]=Impedance Matching (default)
int mrs_dllrst = 1; // RLDRAM MRS A[7]=DLL Reset (default)
uint32_t mrs_dat;
int mrs_dat_p0bunk0 = 0; // MRS Register Data After Address Map (for Port0 Bunk0)
int mrs_dat_p0bunk1 = 0; // MRS Register Data After Address Map (for Port0 Bunk1)
int mrs_dat_p1bunk0 = 0; // MRS Register Data After Address Map (for Port1 Bunk0)
int mrs_dat_p1bunk1 = 0; // MRS Register Data After Address Map (for Port1 Bunk1)
int p0_ena = 0; // DFA Port#0 Enabled
int p1_ena = 0; // DFA Port#1 Enabled
int memport = 0; // Memory(MB) per Port [MAX=512]
int membunk; // Memory(MB) per Bunk
int bunkport = 0; // Bunks/Port [1/2]
int pbunk = 0; // Physical Bunk(or Rank) encoding for address bit
int tref_ms = 32; // tREF(ms) (RLDRAM-II overall device refresh interval
int trefi_ns; // tREFI(ns) = tREF(ns)/#rows/bank
int rows = 8; // #rows/bank (K) typically 8K
int ref512int;
int ref512mod;
int tskw_cyc = 0;
int fprch = 1;
int bprch = 0;
int dfa_memcfg0_base = 0;
int dfa_memcfg1_base = 0;
int tbl = 1; // tBL (1: 2-burst /2: 4-burst)
int rw_dly;
int wr_dly;
int r2r = 1;
int sil_lat = 1;
int clkdiv = 2; /* CN38XX is fixed at 2, CN58XX supports 2,3,4 */
int clkdiv_enc = 0x0; /* Encoded clock divisor, only used for CN58XX */
if (!llm_desc_ptr)
return -1;
/* Setup variables from descriptor */
addr_rld0_fb_str = llm_desc_ptr->addr_rld0_fb_str;
addr_rld0_bb_str = llm_desc_ptr->addr_rld0_bb_str;
addr_rld1_fb_str = llm_desc_ptr->addr_rld1_fb_str;
addr_rld1_bb_str = llm_desc_ptr->addr_rld1_bb_str;
p0_ena = !!llm_desc_ptr->rld1_bunks; // NOTE: P0 == RLD1
p1_ena = !!llm_desc_ptr->rld0_bunks; // NOTE: P1 == RLD0
// Massage the code, so that if the user had imbalanced memory per-port (or imbalanced bunks/port), we
// at least try to configure 'workable' memory.
if (p0_ena && p1_ena) // IF BOTH PORTS Enabled (imbalanced memory), select smaller of BOTH
{
memport = MIN(llm_desc_ptr->rld0_mbytes, llm_desc_ptr->rld1_mbytes);
bunkport = MIN(llm_desc_ptr->rld0_bunks, llm_desc_ptr->rld1_bunks);
}
else if (p0_ena) // P0=RLD1 Enabled
{
memport = llm_desc_ptr->rld1_mbytes;
bunkport = llm_desc_ptr->rld1_bunks;
}
else if (p1_ena) // P1=RLD0 Enabled
{
memport = llm_desc_ptr->rld0_mbytes;
bunkport = llm_desc_ptr->rld0_bunks;
}
else
return -1;
uint32_t eclk_mhz = llm_desc_ptr->cpu_hz/1000000;
/* Tweak skew based on cpu clock */
if (eclk_mhz <= 367)
{
tskw_cyc = 0;
}
else
{
tskw_cyc = 1;
}
/* Determine clock divider ratio (only required for CN58XX) */
if (OCTEON_IS_MODEL(OCTEON_CN58XX))
{
uint32_t max_llm_clock_mhz = llm_desc_ptr->max_rld_clock_mhz;
if (!max_llm_clock_mhz)
{
max_llm_clock_mhz = 400; /* Default to 400 MHz */
cvmx_dprintf("Warning, using default max_rld_clock_mhz of: %lu MHz\n", (unsigned long)max_llm_clock_mhz);
}
/* Compute the divisor, and round up */
clkdiv = eclk_mhz/max_llm_clock_mhz;
if (clkdiv * max_llm_clock_mhz < eclk_mhz)
clkdiv++;
if (clkdiv > 4)
{
cvmx_dprintf("ERROR: CN58XX LLM clock divisor out of range\n");
goto TERMINATE;
}
if (clkdiv < 2)
clkdiv = 2;
cvmx_dprintf("Using llm clock divisor: %d, llm clock is: %lu MHz\n", clkdiv, (unsigned long)eclk_mhz/clkdiv);
/* Translate divisor into bit encoding for register */
/* 0 -> div 2
** 1 -> reserved
** 2 -> div 3
** 3 -> div 4
*/
if (clkdiv == 2)
clkdiv_enc = 0;
else
clkdiv_enc = clkdiv - 1;
/* Odd divisor needs sil_lat to be 2 */
if (clkdiv == 0x3)
sil_lat = 2;
/* Increment tskw for high clock speeds */
if ((unsigned long)eclk_mhz/clkdiv >= 375)
tskw_cyc += 1;
}
eclk_ps = (1000000+(eclk_mhz-1)) / eclk_mhz; // round up if nonzero remainder
//=======================================================================
//=======================================================================
// Now, Query User for DFA Memory Type
if (mtype != 0)
{
goto TERMINATE; // Complete this code for FCRAM usage on N3K-P2
}
//=======================================================================
// Query what the tRC(min) value is from the data sheets
//=======================================================================
// Now determine the Best CFG based on Memory clock(ps) and tRCmin(ns)
mclk_ps = eclk_ps * clkdiv;
trc_cyc = ((trcmin * 1000)/mclk_ps);
trc_mod = ((trcmin * 1000) % mclk_ps);
// If remainder exists, bump up to the next integer multiple
if (trc_mod != 0)
{
trc_cyc = trc_cyc + 1;
}
// If tRC is now ODD, then bump it to the next EVEN integer (RLDRAM-II does not support odd tRC values at this time).
if (trc_cyc & 1)
{
trc_cyc = trc_cyc + 1; // Bump it to an even #
}
// RLDRAM CFG Range Check: If the computed trc_cyc is less than 4, then set it to min CFG1 [tRC=4]
if (trc_cyc < 4)
{
trc_cyc = 4; // If computed trc_cyc < 4 then clamp to 4
}
else if (trc_cyc > 8)
{ // If the computed trc_cyc > 8, then report an error (because RLDRAM cannot support a tRC>8
goto TERMINATE;
}
// Assuming all is ok(up to here)
// At this point the tRC_cyc has been clamped between 4 and 8 (and is even), So it can only be 4,6,8 which are
// the RLDRAM valid CFG range values.
trl_cyc = trc_cyc; // tRL = tRC (for RLDRAM=II)
twl_cyc = trl_cyc + 1; // tWL = tRL + 1 (for RLDRAM-II)
// NOTE: RLDRAM-II (as of 4/25/05) only have 3 supported CFG encodings:
if (trc_cyc == 4)
{
rldcfg = 1; // CFG #1 (tRL=4/tRC=4/tWL=5)
}
else if (trc_cyc == 6)
{
rldcfg = 2; // CFG #2 (tRL=6/tRC=6/tWL=7)
}
else if (trc_cyc == 8)
{
rldcfg = 3; // CFG #3 (tRL=8/tRC=8/tWL=9)
}
else
{
goto TERMINATE;
}
//=======================================================================
mrs_dat = ( (mrs_odt << 9) | (mrs_impmatch << 8) | (mrs_dllrst << 7) | rldcfg );
//=======================================================================
// If there is only a single bunk, then skip over address mapping queries (which are not required)
if (bunkport == 1)
{
goto CALC_PBUNK;
}
/* Process the address mappings */
/* Note that that RLD0 pins corresponds to Port#1, and
** RLD1 pins corresponds to Port#0.
*/
mrs_dat_p1bunk0 = process_address_map_str(mrs_dat, addr_rld0_fb_str);
mrs_dat_p1bunk1 = process_address_map_str(mrs_dat, addr_rld0_bb_str);
mrs_dat_p0bunk0 = process_address_map_str(mrs_dat, addr_rld1_fb_str);
mrs_dat_p0bunk1 = process_address_map_str(mrs_dat, addr_rld1_bb_str);
//=======================================================================
CALC_PBUNK:
// Determine the PBUNK field (based on Memory/Bunk)
// This determines the addr bit used to distinguish when crossing a bunk.
// NOTE: For RLDRAM, the bunk bit is extracted from 'a' programmably selected high
// order addr bit. [linear address per-bunk]
if (bunkport == 2)
{
membunk = (memport / 2);
}
else
{
membunk = memport;
}
if (membunk == 16)
{ // 16MB/bunk MA[19]
pbunk = 0;
}
else if (membunk == 32)
{ // 32MB/bunk MA[20]
pbunk = 1;
}
else if (membunk == 64)
{ // 64MB/bunk MA[21]
pbunk = 2;
}
else if (membunk == 128)
{ // 128MB/bunk MA[22]
pbunk = 3;
}
else if (membunk == 256)
{ // 256MB/bunk MA[23]
pbunk = 4;
}
else if (membunk == 512)
{ // 512MB/bunk
}
//=======================================================================
//=======================================================================
//=======================================================================
// Now determine N3K REFINT
trefi_ns = (tref_ms * 1000 * 1000) / (rows * 1024);
ref512int = ((trefi_ns * 1000) / (eclk_ps * 512));
ref512mod = ((trefi_ns * 1000) % (eclk_ps * 512));
//=======================================================================
// Ask about tSKW
#if 0
if (tskw_ps == 0)
{
tskw_cyc = 0;
}
else
{ // CEILING function
tskw_cyc = (tskw_ps / eclk_ps);
tskw_mod = (tskw_ps % eclk_ps);
if (tskw_mod != 0)
{ // If there's a remainder - then bump to next (+1)
tskw_cyc = tskw_cyc + 1;
}
}
#endif
if (tskw_cyc > 3)
{
goto TERMINATE;
}
tbl = 1; // BLEN=2 (ALWAYs for RLDRAM)
//=======================================================================
// RW_DLY = (ROUND_UP{[[(TRL+TBL)*2 + tSKW + BPRCH] + 1] / 2}) - tWL
rw_dly = ((((trl_cyc + tbl) * 2 + tskw_cyc + bprch) + 1) / 2);
if (rw_dly & 1)
{ // If it's ODD then round up
rw_dly = rw_dly + 1;
}
rw_dly = rw_dly - twl_cyc +1 ;
if (rw_dly < 0)
{ // range check - is it positive
goto TERMINATE;
}
//=======================================================================
// WR_DLY = (ROUND_UP[[(tWL + tBL)*2 - tSKW + FPRCH] / 2]) - tRL
wr_dly = (((twl_cyc + tbl) * 2 - tskw_cyc + fprch) / 2);
if (wr_dly & 1)
{ // If it's ODD then round up
wr_dly = wr_dly + 1;
}
wr_dly = wr_dly - trl_cyc + 1;
if (wr_dly < 0)
{ // range check - is it positive
goto TERMINATE;
}
dfa_memcfg0_base = 0;
dfa_memcfg0_base = ( p0_ena |
(p1_ena << 1) |
(mtype << 3) |
(sil_lat << 4) |
(rw_dly << 6) |
(wr_dly << 10) |
(fprch << 14) |
(bprch << 16) |
(0 << 18) | // BLEN=0(2-burst for RLDRAM)
(pbunk << 19) |
(r2r << 22) | // R2R=1
(clkdiv_enc << 28 )
);
dfa_memcfg1_base = 0;
dfa_memcfg1_base = ( ref512int |
(tskw_cyc << 4) |
(trl_cyc << 8) |
(twl_cyc << 12) |
(trc_cyc << 16) |
(tmrsc_cyc << 20)
);
cfg_ptr->dfa_memcfg0_base = dfa_memcfg0_base;
cfg_ptr->dfa_memcfg1_base = dfa_memcfg1_base;
cfg_ptr->mrs_dat_p0bunk0 = mrs_dat_p0bunk0;
cfg_ptr->mrs_dat_p1bunk0 = mrs_dat_p1bunk0;
cfg_ptr->mrs_dat_p0bunk1 = mrs_dat_p0bunk1;
cfg_ptr->mrs_dat_p1bunk1 = mrs_dat_p1bunk1;
cfg_ptr->p0_ena = p0_ena;
cfg_ptr->p1_ena = p1_ena;
cfg_ptr->bunkport = bunkport;
//=======================================================================
return(0);
TERMINATE:
return(-1);
}
static uint32_t process_address_map_str(uint32_t mrs_dat, char *addr_str)
{
int count = 0;
int amap [23];
uint32_t new_mrs_dat = 0;
// cvmx_dprintf("mrs_dat: 0x%x, str: %x\n", mrs_dat, addr_str);
char *charptr = strtok(addr_str," ");
while ((charptr != NULL) & (count <= 22))
{
amap[22-count] = atoi(charptr); // Assign the AMAP Array
charptr = strtok(NULL," "); // Get Next char string (which represents next addr bit mapping)
count++;
}
// Now do the bit swap of MRSDAT (based on address mapping)
uint32_t mrsdat_bit;
for (count=0;count<=22;count++)
{
mrsdat_bit = bit_extract(mrs_dat, count);
new_mrs_dat = bit_insert(mrsdat_bit, amap[count], new_mrs_dat);
}
return new_mrs_dat;
}
//#define PRINT_LLM_CONFIG
#ifdef PRINT_LLM_CONFIG
#define ll_printf printf
#else
#define ll_printf(...)
#define cvmx_csr_db_decode(...)
#endif
static void cn31xx_dfa_memory_init(void)
{
if (OCTEON_IS_MODEL(OCTEON_CN31XX))
{
cvmx_dfa_ddr2_cfg_t dfaCfg;
cvmx_dfa_eclkcfg_t dfaEcklCfg;
cvmx_dfa_ddr2_addr_t dfaAddr;
cvmx_dfa_ddr2_tmg_t dfaTmg;
cvmx_dfa_ddr2_pll_t dfaPll;
int mem_freq_hz = 533*1000000;
int ref_freq_hz = cvmx_sysinfo_get()->dfa_ref_clock_hz;
if (!ref_freq_hz)
ref_freq_hz = 33*1000000;
cvmx_dprintf ("Configuring DFA memory for %d MHz operation.\n",mem_freq_hz/1000000);
/* Turn on the DFA memory port. */
dfaCfg.u64 = cvmx_read_csr (CVMX_DFA_DDR2_CFG);
dfaCfg.s.prtena = 1;
cvmx_write_csr (CVMX_DFA_DDR2_CFG, dfaCfg.u64);
/* Start the PLL alignment sequence */
dfaPll.u64 = 0;
dfaPll.s.pll_ratio = mem_freq_hz/ref_freq_hz /*400Mhz / 33MHz*/;
dfaPll.s.pll_div2 = 1 /*400 - 1 */;
dfaPll.s.pll_bypass = 0;
cvmx_write_csr (CVMX_DFA_DDR2_PLL, dfaPll.u64);
dfaPll.s.pll_init = 1;
cvmx_write_csr (CVMX_DFA_DDR2_PLL, dfaPll.u64);
cvmx_wait (RLD_INIT_DELAY); //want 150uS
dfaPll.s.qdll_ena = 1;
cvmx_write_csr (CVMX_DFA_DDR2_PLL, dfaPll.u64);
cvmx_wait (RLD_INIT_DELAY); //want 10us
dfaEcklCfg.u64 = 0;
dfaEcklCfg.s.dfa_frstn = 1;
cvmx_write_csr (CVMX_DFA_ECLKCFG, dfaEcklCfg.u64);
/* Configure the DFA Memory */
dfaCfg.s.silo_hc = 1 /*400 - 1 */;
dfaCfg.s.silo_qc = 0 /*400 - 0 */;
dfaCfg.s.tskw = 1 /*400 - 1 */;
dfaCfg.s.ref_int = 0x820 /*533 - 0x820 400 - 0x618*/;
dfaCfg.s.trfc = 0x1A /*533 - 0x23 400 - 0x1A*/;
dfaCfg.s.fprch = 0; /* 1 more conservative*/
dfaCfg.s.bprch = 0; /* 1 */
cvmx_write_csr (CVMX_DFA_DDR2_CFG, dfaCfg.u64);
dfaEcklCfg.u64 = cvmx_read_csr (CVMX_DFA_ECLKCFG);
dfaEcklCfg.s.maxbnk = 1;
cvmx_write_csr (CVMX_DFA_ECLKCFG, dfaEcklCfg.u64);
dfaAddr.u64 = cvmx_read_csr (CVMX_DFA_DDR2_ADDR);
dfaAddr.s.num_cols = 0x1;
dfaAddr.s.num_colrows = 0x2;
dfaAddr.s.num_rnks = 0x1;
cvmx_write_csr (CVMX_DFA_DDR2_ADDR, dfaAddr.u64);
dfaTmg.u64 = cvmx_read_csr (CVMX_DFA_DDR2_TMG);
dfaTmg.s.ddr2t = 0;
dfaTmg.s.tmrd = 0x2;
dfaTmg.s.caslat = 0x4 /*400 - 0x3, 500 - 0x4*/;
dfaTmg.s.pocas = 0;
dfaTmg.s.addlat = 0;
dfaTmg.s.trcd = 4 /*400 - 3, 500 - 4*/;
dfaTmg.s.trrd = 2;
dfaTmg.s.tras = 0xB /*400 - 8, 500 - 0xB*/;
dfaTmg.s.trp = 4 /*400 - 3, 500 - 4*/;
dfaTmg.s.twr = 4 /*400 - 3, 500 - 4*/;
dfaTmg.s.twtr = 2 /*400 - 2 */;
dfaTmg.s.tfaw = 0xE /*400 - 0xA, 500 - 0xE*/;
dfaTmg.s.r2r_slot = 0;
dfaTmg.s.dic = 0; /*400 - 0 */
dfaTmg.s.dqsn_ena = 0;
dfaTmg.s.odt_rtt = 0;
cvmx_write_csr (CVMX_DFA_DDR2_TMG, dfaTmg.u64);
/* Turn on the DDR2 interface and wait a bit for the hardware to setup. */
dfaCfg.s.init = 1;
cvmx_write_csr (CVMX_DFA_DDR2_CFG, dfaCfg.u64);
cvmx_wait(RLD_INIT_DELAY); // want at least 64K cycles
}
}
void write_rld_cfg(rldram_csr_config_t *cfg_ptr)
{
cvmx_dfa_memcfg0_t memcfg0;
cvmx_dfa_memcfg2_t memcfg2;
memcfg0.u64 = cfg_ptr->dfa_memcfg0_base;
if ((OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)))
{
uint32_t dfa_memcfg0;
if (OCTEON_IS_MODEL (OCTEON_CN58XX)) {
// Set RLDQK90_RST and RDLCK_RST to reset all three DLLs.
memcfg0.s.rldck_rst = 1;
memcfg0.s.rldqck90_rst = 1;
cvmx_write_csr(CVMX_DFA_MEMCFG0, memcfg0.u64);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x clk/qk90 reset\n", (uint32_t) memcfg0.u64);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), memcfg0.u64);
// Clear RDLCK_RST while asserting RLDQK90_RST to bring RLDCK DLL out of reset.
memcfg0.s.rldck_rst = 0;
memcfg0.s.rldqck90_rst = 1;
cvmx_write_csr(CVMX_DFA_MEMCFG0, memcfg0.u64);
cvmx_wait(4000000); /* Wait */
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x qk90 reset\n", (uint32_t) memcfg0.u64);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), memcfg0.u64);
// Clear both RDLCK90_RST and RLDQK90_RST to bring the RLDQK90 DLL out of reset.
memcfg0.s.rldck_rst = 0;
memcfg0.s.rldqck90_rst = 0;
cvmx_write_csr(CVMX_DFA_MEMCFG0, memcfg0.u64);
cvmx_wait(4000000); /* Wait */
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x DLL out of reset\n", (uint32_t) memcfg0.u64);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), memcfg0.u64);
}
//=======================================================================
// Now print out the sequence of events:
cvmx_write_csr(CVMX_DFA_MEMCFG0, cfg_ptr->dfa_memcfg0_base);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x port enables\n", cfg_ptr->dfa_memcfg0_base);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), cfg_ptr->dfa_memcfg0_base);
cvmx_wait(4000000); /* Wait */
cvmx_write_csr(CVMX_DFA_MEMCFG1, cfg_ptr->dfa_memcfg1_base);
ll_printf("CVMX_DFA_MEMCFG1: 0x%08x\n", cfg_ptr->dfa_memcfg1_base);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG1 & ~(1ull<<63), cfg_ptr->dfa_memcfg1_base);
if (cfg_ptr->p0_ena ==1)
{
cvmx_write_csr(CVMX_DFA_MEMRLD, cfg_ptr->mrs_dat_p0bunk0);
ll_printf("CVMX_DFA_MEMRLD : 0x%08x p0_ena memrld\n", cfg_ptr->mrs_dat_p0bunk0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMRLD & ~(1ull<<63), cfg_ptr->mrs_dat_p0bunk0);
dfa_memcfg0 = ( cfg_ptr->dfa_memcfg0_base |
(1 << 23) | // P0_INIT
(1 << 25) // BUNK_INIT[1:0]=Bunk#0
);
cvmx_write_csr(CVMX_DFA_MEMCFG0, dfa_memcfg0);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x p0_init/bunk_init\n", dfa_memcfg0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), dfa_memcfg0);
cvmx_wait(RLD_INIT_DELAY);
ll_printf("Delay.....\n");
cvmx_write_csr(CVMX_DFA_MEMCFG0, cfg_ptr->dfa_memcfg0_base);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x back to base\n", cfg_ptr->dfa_memcfg0_base);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), cfg_ptr->dfa_memcfg0_base);
}
if (cfg_ptr->p1_ena ==1)
{
cvmx_write_csr(CVMX_DFA_MEMRLD, cfg_ptr->mrs_dat_p1bunk0);
ll_printf("CVMX_DFA_MEMRLD : 0x%08x p1_ena memrld\n", cfg_ptr->mrs_dat_p1bunk0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMRLD & ~(1ull<<63), cfg_ptr->mrs_dat_p1bunk0);
dfa_memcfg0 = ( cfg_ptr->dfa_memcfg0_base |
(1 << 24) | // P1_INIT
(1 << 25) // BUNK_INIT[1:0]=Bunk#0
);
cvmx_write_csr(CVMX_DFA_MEMCFG0, dfa_memcfg0);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x p1_init/bunk_init\n", dfa_memcfg0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), dfa_memcfg0);
cvmx_wait(RLD_INIT_DELAY);
ll_printf("Delay.....\n");
cvmx_write_csr(CVMX_DFA_MEMCFG0, cfg_ptr->dfa_memcfg0_base);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x back to base\n", cfg_ptr->dfa_memcfg0_base);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), cfg_ptr->dfa_memcfg0_base);
}
// P0 Bunk#1
if ((cfg_ptr->p0_ena ==1) && (cfg_ptr->bunkport == 2))
{
cvmx_write_csr(CVMX_DFA_MEMRLD, cfg_ptr->mrs_dat_p0bunk1);
ll_printf("CVMX_DFA_MEMRLD : 0x%08x p0_ena memrld\n", cfg_ptr->mrs_dat_p0bunk1);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMRLD & ~(1ull<<63), cfg_ptr->mrs_dat_p0bunk1);
dfa_memcfg0 = ( cfg_ptr->dfa_memcfg0_base |
(1 << 23) | // P0_INIT
(2 << 25) // BUNK_INIT[1:0]=Bunk#1
);
cvmx_write_csr(CVMX_DFA_MEMCFG0, dfa_memcfg0);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x p0_init/bunk_init\n", dfa_memcfg0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), dfa_memcfg0);
cvmx_wait(RLD_INIT_DELAY);
ll_printf("Delay.....\n");
if (cfg_ptr->p1_ena == 1)
{ // Re-arm Px_INIT if P1-B1 init is required
cvmx_write_csr(CVMX_DFA_MEMCFG0, cfg_ptr->dfa_memcfg0_base);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x px_init rearm\n", cfg_ptr->dfa_memcfg0_base);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), cfg_ptr->dfa_memcfg0_base);
}
}
if ((cfg_ptr->p1_ena == 1) && (cfg_ptr->bunkport == 2))
{
cvmx_write_csr(CVMX_DFA_MEMRLD, cfg_ptr->mrs_dat_p1bunk1);
ll_printf("CVMX_DFA_MEMRLD : 0x%08x p1_ena memrld\n", cfg_ptr->mrs_dat_p1bunk1);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMRLD & ~(1ull<<63), cfg_ptr->mrs_dat_p1bunk1);
dfa_memcfg0 = ( cfg_ptr->dfa_memcfg0_base |
(1 << 24) | // P1_INIT
(2 << 25) // BUNK_INIT[1:0]=10
);
cvmx_write_csr(CVMX_DFA_MEMCFG0, dfa_memcfg0);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x p1_init/bunk_init\n", dfa_memcfg0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), dfa_memcfg0);
}
cvmx_wait(4000000); // 1/100S, 0.01S, 10mS
ll_printf("Delay.....\n");
/* Enable bunks */
dfa_memcfg0 = cfg_ptr->dfa_memcfg0_base |((cfg_ptr->bunkport >= 1) << 25) | ((cfg_ptr->bunkport == 2) << 26);
cvmx_write_csr(CVMX_DFA_MEMCFG0, dfa_memcfg0);
ll_printf("CVMX_DFA_MEMCFG0: 0x%08x enable bunks\n", dfa_memcfg0);
cvmx_csr_db_decode(cvmx_get_proc_id(), CVMX_DFA_MEMCFG0 & ~(1ull<<63), dfa_memcfg0);
cvmx_wait(RLD_INIT_DELAY);
ll_printf("Delay.....\n");
/* Issue a Silo reset by toggling SILRST in memcfg2. */
memcfg2.u64 = cvmx_read_csr (CVMX_DFA_MEMCFG2);
memcfg2.s.silrst = 1;
cvmx_write_csr (CVMX_DFA_MEMCFG2, memcfg2.u64);
ll_printf("CVMX_DFA_MEMCFG2: 0x%08x silo reset start\n", (uint32_t) memcfg2.u64);
memcfg2.s.silrst = 0;
cvmx_write_csr (CVMX_DFA_MEMCFG2, memcfg2.u64);
ll_printf("CVMX_DFA_MEMCFG2: 0x%08x silo reset done\n", (uint32_t) memcfg2.u64);
}
}