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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/arm/mach-mvebu/serdes/axp/high_speed_env_lib.c

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/*
* Copyright (C) Marvell International Ltd. and its affiliates
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <i2c.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include "high_speed_env_spec.h"
#include "board_env_spec.h"
#define SERDES_VERION "2.1.5"
#define ENDED_OK "High speed PHY - Ended Successfully\n"
static const u8 serdes_cfg[][SERDES_LAST_UNIT] = BIN_SERDES_CFG;
extern MV_BIN_SERDES_CFG *serdes_info_tbl[];
extern u8 rd78460gp_twsi_dev[];
extern u8 db88f78xx0rev2_twsi_dev[];
u32 pex_cfg_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 offs);
int pex_local_bus_num_set(u32 pex_if, u32 bus_num);
int pex_local_dev_num_set(u32 pex_if, u32 dev_num);
#define MV_BOARD_PEX_MODULE_ADDR 0x23
#define MV_BOARD_PEX_MODULE_ID 1
#define MV_BOARD_ETM_MODULE_ID 2
#define PEX_MODULE_DETECT 1
#define ETM_MODULE_DETECT 2
#define PEX_MODE_GET(satr) ((satr & 0x6) >> 1)
#define PEX_CAPABILITY_GET(satr) (satr & 1)
#define MV_PEX_UNIT_TO_IF(pex_unit) ((pex_unit < 3) ? (pex_unit * 4) : 9)
/* Static parametes */
static int config_module;
static int switch_module;
/* Local function */
static u32 board_id_get(void)
{
#if defined(CONFIG_DB_88F78X60)
return DB_88F78XX0_BP_ID;
#elif defined(CONFIG_RD_88F78460_SERVER)
return RD_78460_SERVER_ID;
#elif defined(CONFIG_RD_78460_SERVER_REV2)
return RD_78460_SERVER_REV2_ID;
#elif defined(CONFIG_DB_78X60_PCAC)
return DB_78X60_PCAC_ID;
#elif defined(CONFIG_DB_88F78X60_REV2)
return DB_88F78XX0_BP_REV2_ID;
#elif defined(CONFIG_RD_78460_NAS)
return RD_78460_NAS_ID;
#elif defined(CONFIG_DB_78X60_AMC)
return DB_78X60_AMC_ID;
#elif defined(CONFIG_DB_78X60_PCAC_REV2)
return DB_78X60_PCAC_REV2_ID;
#elif defined(CONFIG_DB_784MP_GP)
return DB_784MP_GP_ID;
#elif defined(CONFIG_RD_78460_CUSTOMER)
return RD_78460_CUSTOMER_ID;
#else
/*
* Return 0 here for custom board as this should not be used
* for custom boards.
*/
return 0;
#endif
}
__weak u8 board_sat_r_get(u8 dev_num, u8 reg)
{
u8 data;
u8 *dev;
u32 board_id = board_id_get();
int ret;
switch (board_id) {
case DB_78X60_AMC_ID:
case DB_78X60_PCAC_REV2_ID:
case RD_78460_CUSTOMER_ID:
case RD_78460_SERVER_ID:
case RD_78460_SERVER_REV2_ID:
case DB_78X60_PCAC_ID:
return (0x1 << 1) | 1;
case FPGA_88F78XX0_ID:
case RD_78460_NAS_ID:
return (0x0 << 1) | 1;
case DB_784MP_GP_ID:
dev = rd78460gp_twsi_dev;
break;
case DB_88F78XX0_BP_ID:
case DB_88F78XX0_BP_REV2_ID:
dev = db88f78xx0rev2_twsi_dev;
break;
default:
return 0;
}
/* Read MPP module ID */
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
ret = i2c_read(dev[dev_num], 0, 1, (u8 *)&data, 1);
if (ret)
return MV_ERROR;
return data;
}
static int board_modules_scan(void)
{
u8 val;
u32 board_id = board_id_get();
int ret;
/* Perform scan only for DB board */
if ((board_id == DB_88F78XX0_BP_ID) ||
(board_id == DB_88F78XX0_BP_REV2_ID)) {
/* reset modules flags */
config_module = 0;
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
/* SERDES module (only PEX model is supported now) */
ret = i2c_read(MV_BOARD_PEX_MODULE_ADDR, 0, 1, (u8 *)&val, 1);
if (ret)
return MV_ERROR;
if (val == MV_BOARD_PEX_MODULE_ID)
config_module = PEX_MODULE_DETECT;
if (val == MV_BOARD_ETM_MODULE_ID)
config_module = ETM_MODULE_DETECT;
} else if (board_id == RD_78460_NAS_ID) {
switch_module = 0;
if ((reg_read(GPP_DATA_IN_REG(2)) & MV_GPP66) == 0x0)
switch_module = 1;
}
return MV_OK;
}
u32 pex_max_unit_get(void)
{
/*
* TODO:
* Right now only MV78460 is supported. Other SoC's might need
* a different value here.
*/
return MV_PEX_MAX_UNIT;
}
u32 pex_max_if_get(void)
{
/*
* TODO:
* Right now only MV78460 is supported. Other SoC's might need
* a different value here.
*/
return MV_PEX_MAX_IF;
}
u8 board_cpu_freq_get(void)
{
u32 sar;
u32 sar_msb;
sar = reg_read(MPP_SAMPLE_AT_RESET(0));
sar_msb = reg_read(MPP_SAMPLE_AT_RESET(1));
return ((sar_msb & 0x100000) >> 17) | ((sar & 0xe00000) >> 21);
}
__weak MV_BIN_SERDES_CFG *board_serdes_cfg_get(u8 pex_mode)
{
u32 board_id;
u32 serdes_cfg_val = 0; /* default */
board_id = board_id_get();
switch (board_id) {
case DB_784MP_GP_ID:
serdes_cfg_val = 0;
break;
}
return &serdes_info_tbl[board_id - BOARD_ID_BASE][serdes_cfg_val];
}
u16 ctrl_model_get(void)
{
/*
* SoC version can't be autodetected. So we need to rely on a define
* from the config system here.
*/
#if defined(CONFIG_MV78230)
return MV_78230_DEV_ID;
#elif defined(CONFIG_MV78260)
return MV_78260_DEV_ID;
#else
return MV_78460_DEV_ID;
#endif
}
u32 get_line_cfg(u32 line_num, MV_BIN_SERDES_CFG *info)
{
if (line_num < 8)
return (info->line0_7 >> (line_num << 2)) & 0xF;
else
return (info->line8_15 >> ((line_num - 8) << 2)) & 0xF;
}
static int serdes_max_lines_get(void)
{
switch (ctrl_model_get()) {
case MV_78230_DEV_ID:
return 7;
case MV_78260_DEV_ID:
return 12;
case MV_78460_DEV_ID:
return 16;
}
return 0;
}
int serdes_phy_config(void)
{
int status = MV_OK;
u32 line_cfg;
u8 line_num;
/* addr/value for each line @ every setup step */
u32 addr[16][11], val[16][11];
u8 pex_unit, pex_line_num;
u8 sgmii_port = 0;
u32 tmp;
u32 in_direct;
u8 max_serdes_lines;
MV_BIN_SERDES_CFG *info;
u8 satr11;
u8 sata_port;
u8 freq;
u8 device_rev;
u32 rx_high_imp_mode;
u16 ctrl_mode;
u32 pex_if;
u32 pex_if_num;
/*
* Get max. serdes lines count
*/
max_serdes_lines = serdes_max_lines_get();
if (max_serdes_lines == 0)
return MV_OK;
satr11 = board_sat_r_get(1, 1);
if ((u8) MV_ERROR == (u8) satr11)
return MV_ERROR;
board_modules_scan();
memset(addr, 0, sizeof(addr));
memset(val, 0, sizeof(val));
/* Check if DRAM is already initialized */
if (reg_read(REG_BOOTROM_ROUTINE_ADDR) &
(1 << REG_BOOTROM_ROUTINE_DRAM_INIT_OFFS)) {
DEBUG_INIT_S("High speed PHY - Version: ");
DEBUG_INIT_S(SERDES_VERION);
DEBUG_INIT_S(" - 2nd boot - Skip\n");
return MV_OK;
}
DEBUG_INIT_S("High speed PHY - Version: ");
DEBUG_INIT_S(SERDES_VERION);
DEBUG_INIT_S(" (COM-PHY-V20)\n");
/*
* AVS : disable AVS for frequency less than 1333
*/
freq = board_cpu_freq_get();
device_rev = mv_ctrl_rev_get();
if (device_rev == 2) { /* for B0 only */
u32 cpu_avs;
u8 fabric_freq;
cpu_avs = reg_read(CPU_AVS_CONTROL2_REG);
DEBUG_RD_REG(CPU_AVS_CONTROL2_REG, cpu_avs);
cpu_avs &= ~(1 << 9);
if ((0x4 == freq) || (0xB == freq)) {
u32 tmp2;
tmp2 = reg_read(CPU_AVS_CONTROL0_REG);
DEBUG_RD_REG(CPU_AVS_CONTROL0_REG, tmp2);
/* cpu upper limit = 1.1V cpu lower limit = 0.9125V */
tmp2 |= 0x0FF;
reg_write(CPU_AVS_CONTROL0_REG, tmp2);
DEBUG_WR_REG(CPU_AVS_CONTROL0_REG, tmp2);
cpu_avs |= (1 << 9); /* cpu avs enable */
cpu_avs |= (1 << 18); /* AvsAvddDetEn enable */
fabric_freq = (reg_read(MPP_SAMPLE_AT_RESET(0)) &
SAR0_FABRIC_FREQ_MASK) >> SAR0_FABRIC_FREQ_OFFSET;
if ((0xB == freq) && (5 == fabric_freq)) {
u32 core_avs;
core_avs = reg_read(CORE_AVS_CONTROL_0REG);
DEBUG_RD_REG(CORE_AVS_CONTROL_0REG, core_avs);
/*
* Set core lower limit = 0.9V &
* core upper limit = 0.9125V
*/
core_avs &= ~(0xff);
core_avs |= 0x0E;
reg_write(CORE_AVS_CONTROL_0REG, core_avs);
DEBUG_WR_REG(CORE_AVS_CONTROL_0REG, core_avs);
core_avs = reg_read(CORE_AVS_CONTROL_2REG);
DEBUG_RD_REG(CORE_AVS_CONTROL_2REG, core_avs);
core_avs |= (1 << 9); /* core AVS enable */
reg_write(CORE_AVS_CONTROL_2REG, core_avs);
DEBUG_WR_REG(CORE_AVS_CONTROL_2REG, core_avs);
tmp2 = reg_read(GENERAL_PURPOSE_RESERVED0_REG);
DEBUG_RD_REG(GENERAL_PURPOSE_RESERVED0_REG,
tmp2);
tmp2 |= 0x1; /* AvsCoreAvddDetEn enable */
reg_write(GENERAL_PURPOSE_RESERVED0_REG, tmp2);
DEBUG_WR_REG(GENERAL_PURPOSE_RESERVED0_REG,
tmp2);
}
}
reg_write(CPU_AVS_CONTROL2_REG, cpu_avs);
DEBUG_WR_REG(CPU_AVS_CONTROL2_REG, cpu_avs);
}
info = board_serdes_cfg_get(PEX_MODE_GET(satr11));
DEBUG_INIT_FULL_S("info->line0_7= 0x");
DEBUG_INIT_FULL_D(info->line0_7, 8);
DEBUG_INIT_FULL_S(" info->line8_15= 0x");
DEBUG_INIT_FULL_D(info->line8_15, 8);
DEBUG_INIT_FULL_S("\n");
if (info == NULL) {
DEBUG_INIT_S("Hight speed PHY Error #1\n");
return MV_ERROR;
}
if (config_module & ETM_MODULE_DETECT) { /* step 0.9 ETM */
DEBUG_INIT_FULL_S("ETM module detect Step 0.9:\n");
reg_write(SERDES_LINE_MUX_REG_0_7, 0x11111111);
DEBUG_WR_REG(SERDES_LINE_MUX_REG_0_7, 0x11111111);
info->pex_mode[1] = PEX_BUS_DISABLED; /* pex unit 1 is configure for ETM */
mdelay(100);
reg_write(PEX_PHY_ACCESS_REG(1), (0x002 << 16) | 0xf44d); /* SETM0 - start calibration */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x002 << 16) | 0xf44d); /* SETM0 - start calibration */
reg_write(PEX_PHY_ACCESS_REG(1), (0x302 << 16) | 0xf44d); /* SETM1 - start calibration */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x302 << 16) | 0xf44d); /* SETM1 - start calibration */
reg_write(PEX_PHY_ACCESS_REG(1), (0x001 << 16) | 0xf801); /* SETM0 - SATA mode & 25MHz ref clk */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x001 << 16) | 0xf801); /* SETM0 - SATA mode & 25MHz ref clk */
reg_write(PEX_PHY_ACCESS_REG(1), (0x301 << 16) | 0xf801); /* SETM1 - SATA mode & 25MHz ref clk */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x301 << 16) | 0xf801); /* SETM1 - SATA mode & 25MHz ref clk */
reg_write(PEX_PHY_ACCESS_REG(1), (0x011 << 16) | 0x0BFF); /* SETM0 - G3 full swing AMP */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x011 << 16) | 0x0BFF); /* SETM0 - G3 full swing AMP */
reg_write(PEX_PHY_ACCESS_REG(1), (0x311 << 16) | 0x0BFF); /* SETM1 - G3 full swing AMP */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x311 << 16) | 0x0BFF); /* SETM1 - G3 full swing AMP */
reg_write(PEX_PHY_ACCESS_REG(1), (0x023 << 16) | 0x0800); /* SETM0 - 40 data bit width */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x023 << 16) | 0x0800); /* SETM0 - 40 data bit width */
reg_write(PEX_PHY_ACCESS_REG(1), (0x323 << 16) | 0x0800); /* SETM1 - 40 data bit width */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x323 << 16) | 0x0800); /* SETM1 - 40 data bit width */
reg_write(PEX_PHY_ACCESS_REG(1), (0x046 << 16) | 0x0400); /* lane0(serdes4) */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x046 << 16) | 0x0400); /* lane0(serdes4) */
reg_write(PEX_PHY_ACCESS_REG(1), (0x346 << 16) | 0x0400); /* lane3(serdes7) */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(1), (0x346 << 16) | 0x0400); /* lane3(serdes7) */
}
/* STEP -1 [PEX-Only] First phase of PEX-PIPE Configuration: */
DEBUG_INIT_FULL_S("Step 1: First phase of PEX-PIPE Configuration\n");
for (pex_unit = 0; pex_unit < pex_max_unit_get(); pex_unit++) {
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
/* 1. GLOB_CLK_CTRL Reset and Clock Control */
reg_write(PEX_PHY_ACCESS_REG(pex_unit), (0xC1 << 16) | 0x25);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit), (0xC1 << 16) | 0x25);
/* 2. GLOB_TEST_CTRL Test Mode Control */
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X4) {
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0xC2 << 16) | 0x200);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0xC2 << 16) | 0x200);
}
/* 3. GLOB_CLK_SRC_LO Clock Source Low */
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X1) {
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0xC3 << 16) | 0x0F);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0xC3 << 16) | 0x0F);
}
reg_write(PEX_PHY_ACCESS_REG(pex_unit), (0xC5 << 16) | 0x11F);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0xC5 << 16) | 0x11F);
}
/*
* 2 Configure the desire PIN_PHY_GEN and do power down to the PU_PLL,
* PU_RX,PU_TX. (bits[12:5])
*/
DEBUG_INIT_FULL_S("Step 2: Configure the desire PIN_PHY_GEN\n");
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SATA]) {
switch (line_num) {
case 4:
case 6:
sata_port = 0;
break;
case 5:
sata_port = 1;
break;
default:
DEBUG_INIT_C
("SATA port error for serdes line: ",
line_num, 2);
return MV_ERROR;
}
tmp = reg_read(SATA_LP_PHY_EXT_CTRL_REG(sata_port));
DEBUG_RD_REG(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
tmp &= ~((0x1ff << 5) | 0x7);
tmp |= ((info->bus_speed & (1 << line_num)) != 0) ?
(0x11 << 5) : 0x0;
reg_write(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
DEBUG_WR_REG(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_QSGMII]) {
/*
* 4) Configure the desire PIN_PHY_GEN and do power
* down to the PU_PLL,PU_RX,PU_TX. (bits[12:5])
*/
tmp = reg_read(SGMII_SERDES_CFG_REG(0));
DEBUG_RD_REG(SGMII_SERDES_CFG_REG(0), tmp);
tmp &= ~((0x1ff << 5) | 0x7);
tmp |= 0x660;
reg_write(SGMII_SERDES_CFG_REG(0), tmp);
DEBUG_WR_REG(SGMII_SERDES_CFG_REG(0), tmp);
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII0])
sgmii_port = 0;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII1])
sgmii_port = 1;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII2])
sgmii_port = 2;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII3])
sgmii_port = 3;
else
continue;
tmp = reg_read(SGMII_SERDES_CFG_REG(sgmii_port));
DEBUG_RD_REG(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
tmp &= ~((0x1ff << 5) | 0x7);
tmp |= (((info->bus_speed & (1 << line_num)) != 0) ?
(0x88 << 5) : (0x66 << 5));
reg_write(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
DEBUG_WR_REG(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
}
/* Step 3 - QSGMII enable */
DEBUG_INIT_FULL_S("Step 3 QSGMII enable\n");
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_QSGMII]) {
/* QSGMII Active bit set to true */
tmp = reg_read(QSGMII_CONTROL_1_REG);
DEBUG_RD_REG(QSGMII_CONTROL_1_REG, tmp);
tmp |= (1 << 30);
#ifdef ERRATA_GL_6572255
tmp |= (1 << 27);
#endif
reg_write(QSGMII_CONTROL_1_REG, tmp);
DEBUG_WR_REG(QSGMII_CONTROL_1_REG, tmp);
}
}
/* Step 4 - configure SERDES MUXes */
DEBUG_INIT_FULL_S("Step 4: Configure SERDES MUXes\n");
if (config_module & ETM_MODULE_DETECT) {
reg_write(SERDES_LINE_MUX_REG_0_7, 0x40041111);
DEBUG_WR_REG(SERDES_LINE_MUX_REG_0_7, 0x40041111);
} else {
reg_write(SERDES_LINE_MUX_REG_0_7, info->line0_7);
DEBUG_WR_REG(SERDES_LINE_MUX_REG_0_7, info->line0_7);
}
reg_write(SERDES_LINE_MUX_REG_8_15, info->line8_15);
DEBUG_WR_REG(SERDES_LINE_MUX_REG_8_15, info->line8_15);
/* Step 5: Activate the RX High Impedance Mode */
DEBUG_INIT_FULL_S("Step 5: Activate the RX High Impedance Mode\n");
rx_high_imp_mode = 0x8080;
if (device_rev == 2) /* for B0 only */
rx_high_imp_mode |= 4;
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
/* for each serdes lane */
DEBUG_INIT_FULL_S("SERDES ");
DEBUG_INIT_FULL_D_10(line_num, 2);
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED]) {
DEBUG_INIT_FULL_S(" unconnected ***\n");
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX]) {
pex_unit = line_num >> 2;
pex_line_num = line_num % 4;
DEBUG_INIT_FULL_S(" - PEX unit ");
DEBUG_INIT_FULL_D_10(pex_unit, 1);
DEBUG_INIT_FULL_S(" line= ");
DEBUG_INIT_FULL_D_10(pex_line_num, 1);
DEBUG_INIT_FULL_S("\n");
/* Needed for PEX_PHY_ACCESS_REG macro */
if ((line_num > 7) &&
(info->pex_mode[3] == PEX_BUS_MODE_X8))
/* lines 8 - 15 are belong to PEX3 in x8 mode */
pex_unit = 3;
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
/*
* 8) Activate the RX High Impedance Mode field
* (bit [2]) in register /PCIe_USB Control (Each MAC
* contain different Access to reach its
* Serdes-Regfile).
* [PEX-Only] Set bit[12]: The analog part latches idle
* if PU_TX = 1 and PU_PLL =1.
*/
/* Termination enable */
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X1) {
in_direct = (0x48 << 16) | (pex_line_num << 24) |
0x1000 | rx_high_imp_mode; /* x1 */
} else if ((info->pex_mode[pex_unit] ==
PEX_BUS_MODE_X4) && (pex_line_num == 0))
in_direct = (0x48 << 16) | (pex_line_num << 24) |
0x1000 | (rx_high_imp_mode & 0xff); /* x4 */
else
in_direct = 0;
if (in_direct) {
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
in_direct);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
in_direct);
}
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SATA]) {
/*
* port 0 for serdes lines 4,6, and port 1 for
* serdes lines 5
*/
sata_port = line_num & 1;
DEBUG_INIT_FULL_S(" - SATA port ");
DEBUG_INIT_FULL_D_10(sata_port, 2);
DEBUG_INIT_FULL_S("\n");
reg_write(SATA_COMPHY_CTRL_REG(sata_port),
rx_high_imp_mode);
DEBUG_WR_REG(SATA_COMPHY_CTRL_REG(sata_port),
rx_high_imp_mode);
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_QSGMII]) {
DEBUG_INIT_FULL_S(" - QSGMII\n");
reg_write(SGMII_COMPHY_CTRL_REG(0), rx_high_imp_mode);
DEBUG_WR_REG(SGMII_COMPHY_CTRL_REG(0),
rx_high_imp_mode);
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII0])
sgmii_port = 0;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII1])
sgmii_port = 1;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII2])
sgmii_port = 2;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII3])
sgmii_port = 3;
else
continue;
DEBUG_INIT_FULL_S(" - SGMII port ");
DEBUG_INIT_FULL_D_10(sgmii_port, 2);
DEBUG_INIT_FULL_S("\n");
reg_write(SGMII_COMPHY_CTRL_REG(sgmii_port), rx_high_imp_mode);
DEBUG_WR_REG(SGMII_COMPHY_CTRL_REG(sgmii_port),
rx_high_imp_mode);
} /* for each serdes lane */
/* Step 6 [PEX-Only] PEX-Main configuration (X4 or X1): */
DEBUG_INIT_FULL_S("Step 6: [PEX-Only] PEX-Main configuration (X4 or X1)\n");
tmp = reg_read(SOC_CTRL_REG);
DEBUG_RD_REG(SOC_CTRL_REG, tmp);
tmp &= 0x200;
if (info->pex_mode[0] == PEX_BUS_MODE_X1)
tmp |= PCIE0_QUADX1_EN;
if (info->pex_mode[1] == PEX_BUS_MODE_X1)
tmp |= PCIE1_QUADX1_EN;
if (((reg_read(MPP_SAMPLE_AT_RESET(0)) & PEX_CLK_100MHZ_MASK) >>
PEX_CLK_100MHZ_OFFSET) == 0x1)
tmp |= (PCIE0_CLK_OUT_EN_MASK | PCIE1_CLK_OUT_EN_MASK);
reg_write(SOC_CTRL_REG, tmp);
DEBUG_WR_REG(SOC_CTRL_REG, tmp);
/* 6.2 PCI Express Link Capabilities */
DEBUG_INIT_FULL_S("Step 6.2: [PEX-Only] PCI Express Link Capabilities\n");
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX]) {
/*
* PCI Express Control
* 0xX1A00 [0]:
* 0x0 X4-Link.
* 0x1 X1-Link
*/
pex_unit = line_num >> 2;
pex_if = MV_SERDES_NUM_TO_PEX_NUM(line_num);
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
/* set Common Clock Configuration */
tmp = reg_read(PEX_LINK_CTRL_STATUS_REG(pex_if));
DEBUG_RD_REG(PEX_LINK_CTRL_STATUS_REG(pex_if), tmp);
tmp |= (1 << 6);
reg_write(PEX_LINK_CTRL_STATUS_REG(pex_if), tmp);
DEBUG_WR_REG(PEX_LINK_CTRL_STATUS_REG(pex_if), tmp);
tmp = reg_read(PEX_LINK_CAPABILITIES_REG(pex_if));
DEBUG_RD_REG(PEX_LINK_CAPABILITIES_REG(pex_if), tmp);
tmp &= ~(0x3FF);
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X1)
tmp |= (0x1 << 4);
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X4)
tmp |= (0x4 << 4);
if (0 == PEX_CAPABILITY_GET(satr11))
tmp |= 0x1;
else
tmp |= 0x2;
DEBUG_INIT_FULL_S("Step 6.2: PEX ");
DEBUG_INIT_FULL_D(pex_if, 1);
DEBUG_INIT_FULL_C(" set GEN", (tmp & 3), 1);
reg_write(PEX_LINK_CAPABILITIES_REG(pex_if), tmp);
DEBUG_WR_REG(PEX_LINK_CAPABILITIES_REG(pex_if), tmp);
/*
* If pex is X4, no need to pass thru the other
* 3X1 serdes lines
*/
if (info->pex_mode[pex_unit] == PEX_BUS_MODE_X4)
line_num += 3;
}
}
/*
* Step 7 [PEX-X4 Only] To create PEX-Link that contain 4-lanes you
* need to config the register SOC_Misc/General Purpose2
* (Address= 182F8)
*/
DEBUG_INIT_FULL_S("Step 7: [PEX-X4 Only] To create PEX-Link\n");
tmp = reg_read(GEN_PURP_RES_2_REG);
DEBUG_RD_REG(GEN_PURP_RES_2_REG, tmp);
tmp &= 0xFFFF0000;
if (info->pex_mode[0] == PEX_BUS_MODE_X4)
tmp |= 0x0000000F;
if (info->pex_mode[1] == PEX_BUS_MODE_X4)
tmp |= 0x000000F0;
if (info->pex_mode[2] == PEX_BUS_MODE_X4)
tmp |= 0x00000F00;
if (info->pex_mode[3] == PEX_BUS_MODE_X4)
tmp |= 0x0000F000;
reg_write(GEN_PURP_RES_2_REG, tmp);
DEBUG_WR_REG(GEN_PURP_RES_2_REG, tmp);
/* Steps 8 , 9 ,10 - use prepared REG addresses and values */
DEBUG_INIT_FULL_S("Steps 7,8,9,10 and 11\n");
/* Prepare PHY parameters for each step according to MUX selection */
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
/* for each serdes lane */
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX]) {
pex_unit = line_num >> 2;
pex_line_num = line_num % 4;
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
/*
* 8) Configure the desire PHY_MODE (bits [7:5])
* and REF_FREF_SEL (bits[4:0]) in the register Power
* and PLL Control (Each MAC contain different Access
* to reach its Serdes-Regfile).
*/
if (((info->pex_mode[pex_unit] == PEX_BUS_MODE_X4) &&
(0 == pex_line_num))
|| ((info->pex_mode[pex_unit] == PEX_BUS_MODE_X1))) {
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0x01 << 16) | (pex_line_num << 24) |
0xFC60);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0x01 << 16) | (pex_line_num << 24)
| 0xFC60);
/*
* Step 8.1: [PEX-Only] Configure Max PLL Rate
* (bit 8 in KVCO Calibration Control and
* bits[10:9] in
*/
/* Use Maximum PLL Rate(Bit 8) */
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0x02 << 16) | (1 << 31) |
(pex_line_num << 24)); /* read command */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0x02 << 16) | (1 << 31) |
(pex_line_num << 24));
tmp = reg_read(PEX_PHY_ACCESS_REG(pex_unit));
DEBUG_RD_REG(PEX_PHY_ACCESS_REG(pex_unit), tmp);
tmp &= ~(1 << 31);
tmp |= (1 << 8);
reg_write(PEX_PHY_ACCESS_REG(pex_unit), tmp);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit), tmp);
/* Use Maximum PLL Rate(Bits [10:9]) */
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0x81 << 16) | (1 << 31) |
(pex_line_num << 24)); /* read command */
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0x81 << 16) | (1 << 31) |
(pex_line_num << 24));
tmp = reg_read(PEX_PHY_ACCESS_REG(pex_unit));
DEBUG_RD_REG(PEX_PHY_ACCESS_REG(pex_unit), tmp);
tmp &= ~(1 << 31);
tmp |= (3 << 9);
reg_write(PEX_PHY_ACCESS_REG(pex_unit), tmp);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit), tmp);
}
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SATA]) {
/*
* Port 0 for serdes lines 4,6, and port 1 for serdes
* lines 5
*/
sata_port = line_num & 1;
/*
* 8) Configure the desire PHY_MODE (bits [7:5]) and
* REF_FREF_SEL (bits[4:0]) in the register Power
* and PLL Control (Each MAC contain different Access
* to reach its Serdes-Regfile).
*/
reg_write(SATA_PWR_PLL_CTRL_REG(sata_port), 0xF801);
DEBUG_WR_REG(SATA_PWR_PLL_CTRL_REG(sata_port), 0xF801);
/* 9) Configure the desire SEL_BITS */
reg_write(SATA_DIG_LP_ENA_REG(sata_port), 0x400);
DEBUG_WR_REG(SATA_DIG_LP_ENA_REG(sata_port), 0x400);
/* 10) Configure the desire REFCLK_SEL */
reg_write(SATA_REF_CLK_SEL_REG(sata_port), 0x400);
DEBUG_WR_REG(SATA_REF_CLK_SEL_REG(sata_port), 0x400);
/* 11) Power up to the PU_PLL,PU_RX,PU_TX. */
tmp = reg_read(SATA_LP_PHY_EXT_CTRL_REG(sata_port));
DEBUG_RD_REG(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
tmp |= 7;
reg_write(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
DEBUG_WR_REG(SATA_LP_PHY_EXT_CTRL_REG(sata_port), tmp);
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_QSGMII]) {
/*
* 8) Configure the desire PHY_MODE (bits [7:5])
* and REF_FREF_SEL (bits[4:0]) in the register
*/
reg_write(SGMII_PWR_PLL_CTRL_REG(0), 0xF881);
DEBUG_WR_REG(SGMII_PWR_PLL_CTRL_REG(0), 0xF881);
/*
* 9) Configure the desire SEL_BITS (bits [11:0]
* in register
*/
reg_write(SGMII_DIG_LP_ENA_REG(0), 0x400);
DEBUG_WR_REG(SGMII_DIG_LP_ENA_REG(0), 0x400);
/*
* 10) Configure the desire REFCLK_SEL (bit [10])
* in register
*/
reg_write(SGMII_REF_CLK_SEL_REG(0), 0x400);
DEBUG_WR_REG(SGMII_REF_CLK_SEL_REG(0), 0x400);
/* 11) Power up to the PU_PLL,PU_RX,PU_TX. */
tmp = reg_read(SGMII_SERDES_CFG_REG(0));
DEBUG_RD_REG(SGMII_SERDES_CFG_REG(0), tmp);
tmp |= 7;
reg_write(SGMII_SERDES_CFG_REG(0), tmp);
DEBUG_WR_REG(SGMII_SERDES_CFG_REG(0), tmp);
continue;
}
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII0])
sgmii_port = 0;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII1])
sgmii_port = 1;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII2])
sgmii_port = 2;
else if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SGMII3])
sgmii_port = 3;
else
continue;
/*
* 8) Configure the desire PHY_MODE (bits [7:5]) and
* REF_FREF_SEL (bits[4:0]) in the register
*/
reg_write(SGMII_PWR_PLL_CTRL_REG(sgmii_port), 0xF881);
DEBUG_WR_REG(SGMII_PWR_PLL_CTRL_REG(sgmii_port), 0xF881);
/* 9) Configure the desire SEL_BITS (bits [11:0] in register */
reg_write(SGMII_DIG_LP_ENA_REG(sgmii_port), 0);
DEBUG_WR_REG(SGMII_DIG_LP_ENA_REG(sgmii_port), 0);
/* 10) Configure the desire REFCLK_SEL (bit [10]) in register */
reg_write(SGMII_REF_CLK_SEL_REG(sgmii_port), 0x400);
DEBUG_WR_REG(SGMII_REF_CLK_SEL_REG(sgmii_port), 0x400);
/* 11) Power up to the PU_PLL,PU_RX,PU_TX. */
tmp = reg_read(SGMII_SERDES_CFG_REG(sgmii_port));
DEBUG_RD_REG(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
tmp |= 7;
reg_write(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
DEBUG_WR_REG(SGMII_SERDES_CFG_REG(sgmii_port), tmp);
} /* for each serdes lane */
/* Step 12 [PEX-Only] Last phase of PEX-PIPE Configuration */
DEBUG_INIT_FULL_S("Steps 12: [PEX-Only] Last phase of PEX-PIPE Configuration\n");
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
/* for each serdes lane */
line_cfg = get_line_cfg(line_num, info);
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX]) {
pex_unit = line_num >> 2;
pex_line_num = line_num % 4;
if (0 == pex_line_num) {
reg_write(PEX_PHY_ACCESS_REG(pex_unit),
(0xC1 << 16) | 0x24);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG(pex_unit),
(0xC1 << 16) | 0x24);
}
}
}
/*--------------------------------------------------------------*/
/* Step 13: Wait 15ms before checking results */
DEBUG_INIT_FULL_S("Steps 13: Wait 15ms before checking results");
mdelay(15);
tmp = 20;
while (tmp) {
status = MV_OK;
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
u32 tmp;
line_cfg = get_line_cfg(line_num, info);
if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_PEX])
continue;
if (line_cfg == serdes_cfg[line_num][SERDES_UNIT_SATA]) {
/*
* Port 0 for serdes lines 4,6, and port 1
* for serdes lines 5
*/
sata_port = line_num & 1;
tmp =
reg_read(SATA_LP_PHY_EXT_STAT_REG
(sata_port));
DEBUG_RD_REG(SATA_LP_PHY_EXT_STAT_REG
(sata_port), tmp);
if ((tmp & 0x7) != 0x7)
status = MV_ERROR;
continue;
}
if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_QSGMII]) {
tmp = reg_read(SGMII_SERDES_STAT_REG(0));
DEBUG_RD_REG(SGMII_SERDES_STAT_REG(0), tmp);
if ((tmp & 0x7) != 0x7)
status = MV_ERROR;
continue;
}
if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_SGMII0])
sgmii_port = 0;
else if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_SGMII1])
sgmii_port = 1;
else if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_SGMII2])
sgmii_port = 2;
else if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_SGMII3])
sgmii_port = 3;
else
continue;
tmp = reg_read(SGMII_SERDES_STAT_REG(sgmii_port));
DEBUG_RD_REG(SGMII_SERDES_STAT_REG(sgmii_port), tmp);
if ((tmp & 0x7) != 0x7)
status = MV_ERROR;
}
if (status == MV_OK)
break;
mdelay(5);
tmp--;
}
/*
* Step14 [PEX-Only] In order to configure RC/EP mode please write
* to register 0x0060 bits
*/
DEBUG_INIT_FULL_S("Steps 14: [PEX-Only] In order to configure\n");
for (pex_unit = 0; pex_unit < pex_max_unit_get(); pex_unit++) {
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
tmp =
reg_read(PEX_CAPABILITIES_REG(MV_PEX_UNIT_TO_IF(pex_unit)));
DEBUG_RD_REG(PEX_CAPABILITIES_REG(MV_PEX_UNIT_TO_IF(pex_unit)),
tmp);
tmp &= ~(0xf << 20);
if (info->pex_type == MV_PEX_ROOT_COMPLEX)
tmp |= (0x4 << 20);
else
tmp |= (0x1 << 20);
reg_write(PEX_CAPABILITIES_REG(MV_PEX_UNIT_TO_IF(pex_unit)),
tmp);
DEBUG_WR_REG(PEX_CAPABILITIES_REG(MV_PEX_UNIT_TO_IF(pex_unit)),
tmp);
}
/*
* Step 15 [PEX-Only] Only for EP mode set to Zero bits 19 and 16 of
* register 0x1a60
*/
DEBUG_INIT_FULL_S("Steps 15: [PEX-Only] In order to configure\n");
for (pex_unit = 0; pex_unit < pex_max_unit_get(); pex_unit++) {
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED)
continue;
if (info->pex_type == MV_PEX_END_POINT) {
tmp =
reg_read(PEX_DBG_CTRL_REG
(MV_PEX_UNIT_TO_IF(pex_unit)));
DEBUG_RD_REG(PEX_DBG_CTRL_REG
(MV_PEX_UNIT_TO_IF(pex_unit)), tmp);
tmp &= 0xfff6ffff;
reg_write(PEX_DBG_CTRL_REG(MV_PEX_UNIT_TO_IF(pex_unit)),
tmp);
DEBUG_WR_REG(PEX_DBG_CTRL_REG
(MV_PEX_UNIT_TO_IF(pex_unit)), tmp);
}
}
if (info->serdes_m_phy_change) {
MV_SERDES_CHANGE_M_PHY *serdes_m_phy_change;
u32 bus_speed;
for (line_num = 0; line_num < max_serdes_lines; line_num++) {
line_cfg = get_line_cfg(line_num, info);
if (line_cfg ==
serdes_cfg[line_num][SERDES_UNIT_UNCONNECTED])
continue;
serdes_m_phy_change = info->serdes_m_phy_change;
bus_speed = info->bus_speed & (1 << line_num);
while (serdes_m_phy_change->type !=
SERDES_UNIT_UNCONNECTED) {
switch (serdes_m_phy_change->type) {
case SERDES_UNIT_PEX:
if (line_cfg != SERDES_UNIT_PEX)
break;
pex_unit = line_num >> 2;
pex_line_num = line_num % 4;
if (info->pex_mode[pex_unit] ==
PEX_BUS_DISABLED)
break;
if ((info->pex_mode[pex_unit] ==
PEX_BUS_MODE_X4) && pex_line_num)
break;
if (bus_speed) {
reg_write(PEX_PHY_ACCESS_REG
(pex_unit),
(pex_line_num << 24) |
serdes_m_phy_change->val_hi_speed);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG
(pex_unit),
(pex_line_num <<
24) |
serdes_m_phy_change->val_hi_speed);
} else {
reg_write(PEX_PHY_ACCESS_REG
(pex_unit),
(pex_line_num << 24) |
serdes_m_phy_change->val_low_speed);
DEBUG_WR_REG(PEX_PHY_ACCESS_REG
(pex_unit),
(pex_line_num <<
24) |
serdes_m_phy_change->val_low_speed);
}
break;
case SERDES_UNIT_SATA:
if (line_cfg != SERDES_UNIT_SATA)
break;
/*
* Port 0 for serdes lines 4,6, and
* port 1 for serdes lines 5
*/
sata_port = line_num & 1;
if (bus_speed) {
reg_write(SATA_BASE_REG
(sata_port) |
serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
DEBUG_WR_REG(SATA_BASE_REG
(sata_port) |
serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
} else {
reg_write(SATA_BASE_REG
(sata_port) |
serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
DEBUG_WR_REG(SATA_BASE_REG
(sata_port) |
serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
}
break;
case SERDES_UNIT_SGMII0:
case SERDES_UNIT_SGMII1:
case SERDES_UNIT_SGMII2:
case SERDES_UNIT_SGMII3:
if (line_cfg == serdes_cfg[line_num]
[SERDES_UNIT_SGMII0])
sgmii_port = 0;
else if (line_cfg ==
serdes_cfg[line_num]
[SERDES_UNIT_SGMII1])
sgmii_port = 1;
else if (line_cfg ==
serdes_cfg[line_num]
[SERDES_UNIT_SGMII2])
sgmii_port = 2;
else if (line_cfg ==
serdes_cfg[line_num]
[SERDES_UNIT_SGMII3])
sgmii_port = 3;
else
break;
if (bus_speed) {
reg_write(MV_ETH_REGS_BASE
(sgmii_port) |
serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
DEBUG_WR_REG(MV_ETH_REGS_BASE
(sgmii_port) |
serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
} else {
reg_write(MV_ETH_REGS_BASE
(sgmii_port) |
serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
DEBUG_WR_REG(MV_ETH_REGS_BASE
(sgmii_port) |
serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
}
break;
case SERDES_UNIT_QSGMII:
if (line_cfg != SERDES_UNIT_QSGMII)
break;
if (bus_speed) {
reg_write
(serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
DEBUG_WR_REG
(serdes_m_phy_change->reg_hi_speed,
serdes_m_phy_change->val_hi_speed);
} else {
reg_write
(serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
DEBUG_WR_REG
(serdes_m_phy_change->reg_low_speed,
serdes_m_phy_change->val_low_speed);
}
break;
default:
break;
}
serdes_m_phy_change++;
}
}
}
/* Step 16 [PEX-Only] Training Enable */
DEBUG_INIT_FULL_S("Steps 16: [PEX-Only] Training Enable");
tmp = reg_read(SOC_CTRL_REG);
DEBUG_RD_REG(SOC_CTRL_REG, tmp);
tmp &= ~(0x0F);
for (pex_unit = 0; pex_unit < pex_max_unit_get(); pex_unit++) {
reg_write(PEX_CAUSE_REG(pex_unit), 0);
DEBUG_WR_REG(PEX_CAUSE_REG(pex_unit), 0);
if (info->pex_mode[pex_unit] != PEX_BUS_DISABLED)
tmp |= (0x1 << pex_unit);
}
reg_write(SOC_CTRL_REG, tmp);
DEBUG_WR_REG(SOC_CTRL_REG, tmp);
/* Step 17: Speed change to target speed and width */
{
u32 tmp_reg, tmp_pex_reg;
u32 addr;
u32 first_busno, next_busno;
u32 max_link_width = 0;
u32 neg_link_width = 0;
pex_if_num = pex_max_if_get();
mdelay(150);
DEBUG_INIT_FULL_C("step 17: max_if= 0x", pex_if_num, 1);
next_busno = 0;
for (pex_if = 0; pex_if < pex_if_num; pex_if++) {
line_num = (pex_if <= 8) ? pex_if : 12;
line_cfg = get_line_cfg(line_num, info);
if (line_cfg != serdes_cfg[line_num][SERDES_UNIT_PEX])
continue;
pex_unit = (pex_if < 9) ? (pex_if >> 2) : 3;
DEBUG_INIT_FULL_S("step 17: PEX");
DEBUG_INIT_FULL_D(pex_if, 1);
DEBUG_INIT_FULL_C(" pex_unit= ", pex_unit, 1);
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED) {
DEBUG_INIT_FULL_C("PEX disabled interface ",
pex_if, 1);
if (pex_if < 8)
pex_if += 3;
continue;
}
first_busno = next_busno;
if ((info->pex_type == MV_PEX_END_POINT) &&
(0 == pex_if)) {
if ((pex_if < 8) && (info->pex_mode[pex_unit] ==
PEX_BUS_MODE_X4))
pex_if += 3;
continue;
}
tmp = reg_read(PEX_DBG_STATUS_REG(pex_if));
DEBUG_RD_REG(PEX_DBG_STATUS_REG(pex_if), tmp);
if ((tmp & 0x7f) == 0x7e) {
next_busno++;
tmp = reg_read(PEX_LINK_CAPABILITIES_REG(pex_if));
max_link_width = tmp;
DEBUG_RD_REG((PEX_LINK_CAPABILITIES_REG
(pex_if)), tmp);
max_link_width = ((max_link_width >> 4) & 0x3F);
neg_link_width =
reg_read(PEX_LINK_CTRL_STATUS_REG(pex_if));
DEBUG_RD_REG((PEX_LINK_CTRL_STATUS_REG(pex_if)),
neg_link_width);
neg_link_width = ((neg_link_width >> 20) & 0x3F);
if (max_link_width > neg_link_width) {
tmp &= ~(0x3F << 4);
tmp |= (neg_link_width << 4);
reg_write(PEX_LINK_CAPABILITIES_REG
(pex_if), tmp);
DEBUG_WR_REG((PEX_LINK_CAPABILITIES_REG
(pex_if)), tmp);
mdelay(1); /* wait 1ms before reading capability for speed */
DEBUG_INIT_S("PEX");
DEBUG_INIT_D(pex_if, 1);
DEBUG_INIT_C(": change width to X",
neg_link_width, 1);
}
tmp_pex_reg =
reg_read((PEX_CFG_DIRECT_ACCESS
(pex_if,
PEX_LINK_CAPABILITY_REG)));
DEBUG_RD_REG((PEX_CFG_DIRECT_ACCESS
(pex_if,
PEX_LINK_CAPABILITY_REG)),
tmp_pex_reg);
tmp_pex_reg &= (0xF);
if (tmp_pex_reg == 0x2) {
tmp_reg =
(reg_read
(PEX_CFG_DIRECT_ACCESS
(pex_if,
PEX_LINK_CTRL_STAT_REG)) &
0xF0000) >> 16;
DEBUG_RD_REG(PEX_CFG_DIRECT_ACCESS
(pex_if,
PEX_LINK_CTRL_STAT_REG),
tmp_pex_reg);
/* check if the link established is GEN1 */
if (tmp_reg == 0x1) {
pex_local_bus_num_set(pex_if,
first_busno);
pex_local_dev_num_set(pex_if,
1);
DEBUG_INIT_FULL_S("** Link is Gen1, check the EP capability\n");
/* link is Gen1, check the EP capability */
addr =
pex_cfg_read(pex_if,
first_busno, 0,
0,
0x34) & 0xFF;
DEBUG_INIT_FULL_C("pex_cfg_read: return addr=0x%x",
addr, 4);
if (addr == 0xff) {
DEBUG_INIT_FULL_C("pex_cfg_read: return 0xff -->PEX (%d): Detected No Link.",
pex_if, 1);
continue;
}
while ((pex_cfg_read
(pex_if, first_busno, 0,
0,
addr) & 0xFF) !=
0x10) {
addr =
(pex_cfg_read
(pex_if,
first_busno, 0, 0,
addr) & 0xFF00) >>
8;
}
if ((pex_cfg_read
(pex_if, first_busno, 0, 0,
addr + 0xC) & 0xF) >=
0x2) {
tmp =
reg_read
(PEX_LINK_CTRL_STATUS2_REG
(pex_if));
DEBUG_RD_REG
(PEX_LINK_CTRL_STATUS2_REG
(pex_if), tmp);
tmp &= ~(0x1 | 1 << 1);
tmp |= (1 << 1);
reg_write
(PEX_LINK_CTRL_STATUS2_REG
(pex_if), tmp);
DEBUG_WR_REG
(PEX_LINK_CTRL_STATUS2_REG
(pex_if), tmp);
tmp =
reg_read
(PEX_CTRL_REG
(pex_if));
DEBUG_RD_REG
(PEX_CTRL_REG
(pex_if), tmp);
tmp |= (1 << 10);
reg_write(PEX_CTRL_REG
(pex_if),
tmp);
DEBUG_WR_REG
(PEX_CTRL_REG
(pex_if), tmp);
mdelay(10); /* We need to wait 10ms before reading the PEX_DBG_STATUS_REG in order not to read the status of the former state */
DEBUG_INIT_FULL_S
("Gen2 client!\n");
} else {
DEBUG_INIT_FULL_S
("GEN1 client!\n");
}
}
}
} else {
DEBUG_INIT_FULL_S("PEX");
DEBUG_INIT_FULL_D(pex_if, 1);
DEBUG_INIT_FULL_S(" : Detected No Link. Status Reg(0x");
DEBUG_INIT_FULL_D(PEX_DBG_STATUS_REG(pex_if),
8);
DEBUG_INIT_FULL_C(") = 0x", tmp, 8);
}
if ((pex_if < 8) &&
(info->pex_mode[pex_unit] == PEX_BUS_MODE_X4))
pex_if += 3;
}
}
/* Step 18: update pex DEVICE ID */
{
u32 devId;
pex_if_num = pex_max_if_get();
ctrl_mode = ctrl_model_get();
for (pex_if = 0; pex_if < pex_if_num; pex_if++) {
pex_unit = (pex_if < 9) ? (pex_if >> 2) : 3;
if (info->pex_mode[pex_unit] == PEX_BUS_DISABLED) {
if ((pex_if < 8) &&
(info->pex_mode[pex_unit] == PEX_BUS_MODE_X4))
pex_if += 3;
continue;
}
devId = reg_read(PEX_CFG_DIRECT_ACCESS(
pex_if, PEX_DEVICE_AND_VENDOR_ID));
devId &= 0xFFFF;
devId |= ((ctrl_mode << 16) & 0xffff0000);
DEBUG_INIT_FULL_S("Update Device ID PEX");
DEBUG_INIT_FULL_D(pex_if, 1);
DEBUG_INIT_FULL_D(devId, 8);
DEBUG_INIT_FULL_S("\n");
reg_write(PEX_CFG_DIRECT_ACCESS
(pex_if, PEX_DEVICE_AND_VENDOR_ID), devId);
if ((pex_if < 8) &&
(info->pex_mode[pex_unit] == PEX_BUS_MODE_X4))
pex_if += 3;
}
DEBUG_INIT_FULL_S("Update PEX Device ID 0x");
DEBUG_INIT_FULL_D(ctrl_mode, 4);
DEBUG_INIT_FULL_S("0\n");
}
tmp = reg_read(PEX_DBG_STATUS_REG(0));
DEBUG_RD_REG(PEX_DBG_STATUS_REG(0), tmp);
DEBUG_INIT_S(ENDED_OK);
return MV_OK;
}
/* PEX configuration space read write */
/*
* pex_cfg_read - Read from configuration space
*
* DESCRIPTION:
* This function performs a 32 bit read from PEX configuration space.
* It supports both type 0 and type 1 of Configuration Transactions
* (local and over bridge). In order to read from local bus segment, use
* bus number retrieved from mvPexLocalBusNumGet(). Other bus numbers
* will result configuration transaction of type 1 (over bridge).
*
* INPUT:
* pex_if - PEX interface number.
* bus - PEX segment bus number.
* dev - PEX device number.
* func - Function number.
* offss - Register offset.
*
* OUTPUT:
* None.
*
* RETURN:
* 32bit register data, 0xffffffff on error
*
*/
u32 pex_cfg_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 offs)
{
u32 pex_data = 0;
u32 local_dev, local_bus;
u32 val;
if (pex_if >= MV_PEX_MAX_IF)
return 0xFFFFFFFF;
if (dev >= MAX_PEX_DEVICES) {
DEBUG_INIT_C("pex_cfg_read: ERR. device number illigal ", dev,
1);
return 0xFFFFFFFF;
}
if (func >= MAX_PEX_FUNCS) {
DEBUG_INIT_C("pex_cfg_read: ERR. function num illigal ", func,
1);
return 0xFFFFFFFF;
}
if (bus >= MAX_PEX_BUSSES) {
DEBUG_INIT_C("pex_cfg_read: ERR. bus number illigal ", bus, 1);
return MV_ERROR;
}
val = reg_read(PEX_STATUS_REG(pex_if));
local_dev =
((val & PXSR_PEX_DEV_NUM_MASK) >> PXSR_PEX_DEV_NUM_OFFS);
local_bus =
((val & PXSR_PEX_BUS_NUM_MASK) >> PXSR_PEX_BUS_NUM_OFFS);
/* Speed up the process. In case on no link, return MV_ERROR */
if ((dev != local_dev) || (bus != local_bus)) {
pex_data = reg_read(PEX_STATUS_REG(pex_if));
if ((pex_data & PXSR_DL_DOWN))
return MV_ERROR;
}
/*
* In PCI Express we have only one device number
* and this number is the first number we encounter else that the
* local_dev spec pex define return on config read/write on any device
*/
if (bus == local_bus) {
if (local_dev == 0) {
/*
* If local dev is 0 then the first number we encounter
* after 0 is 1
*/
if ((dev != 1) && (dev != local_dev))
return MV_ERROR;
} else {
/*
* If local dev is not 0 then the first number we
* encounter is 0
*/
if ((dev != 0) && (dev != local_dev))
return MV_ERROR;
}
}
/* Creating PEX address to be passed */
pex_data = (bus << PXCAR_BUS_NUM_OFFS);
pex_data |= (dev << PXCAR_DEVICE_NUM_OFFS);
pex_data |= (func << PXCAR_FUNC_NUM_OFFS);
pex_data |= (offs & PXCAR_REG_NUM_MASK); /* lgacy register space */
/* extended register space */
pex_data |= (((offs & PXCAR_REAL_EXT_REG_NUM_MASK) >>
PXCAR_REAL_EXT_REG_NUM_OFFS) << PXCAR_EXT_REG_NUM_OFFS);
pex_data |= PXCAR_CONFIG_EN;
/* Write the address to the PEX configuration address register */
reg_write(PEX_CFG_ADDR_REG(pex_if), pex_data);
/*
* In order to let the PEX controller absorbed the address of the read
* transaction we perform a validity check that the address was written
*/
if (pex_data != reg_read(PEX_CFG_ADDR_REG(pex_if)))
return MV_ERROR;
/* cleaning Master Abort */
reg_bit_set(PEX_CFG_DIRECT_ACCESS(pex_if, PEX_STATUS_AND_COMMAND),
PXSAC_MABORT);
/* Read the Data returned in the PEX Data register */
pex_data = reg_read(PEX_CFG_DATA_REG(pex_if));
DEBUG_INIT_FULL_C(" --> ", pex_data, 4);
return pex_data;
}
/*
* pex_local_bus_num_set - Set PEX interface local bus number.
*
* DESCRIPTION:
* This function sets given PEX interface its local bus number.
* Note: In case the PEX interface is PEX-X, the information is read-only.
*
* INPUT:
* pex_if - PEX interface number.
* bus_num - Bus number.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_NOT_ALLOWED in case PEX interface is PEX-X.
* MV_BAD_PARAM on bad parameters ,
* otherwise MV_OK
*
*/
int pex_local_bus_num_set(u32 pex_if, u32 bus_num)
{
u32 val;
if (bus_num >= MAX_PEX_BUSSES) {
DEBUG_INIT_C("pex_local_bus_num_set: ERR. bus number illigal %d\n",
bus_num, 4);
return MV_ERROR;
}
val = reg_read(PEX_STATUS_REG(pex_if));
val &= ~PXSR_PEX_BUS_NUM_MASK;
val |= (bus_num << PXSR_PEX_BUS_NUM_OFFS) & PXSR_PEX_BUS_NUM_MASK;
reg_write(PEX_STATUS_REG(pex_if), val);
return MV_OK;
}
/*
* pex_local_dev_num_set - Set PEX interface local device number.
*
* DESCRIPTION:
* This function sets given PEX interface its local device number.
* Note: In case the PEX interface is PEX-X, the information is read-only.
*
* INPUT:
* pex_if - PEX interface number.
* dev_num - Device number.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_NOT_ALLOWED in case PEX interface is PEX-X.
* MV_BAD_PARAM on bad parameters ,
* otherwise MV_OK
*
*/
int pex_local_dev_num_set(u32 pex_if, u32 dev_num)
{
u32 val;
if (pex_if >= MV_PEX_MAX_IF)
return MV_BAD_PARAM;
val = reg_read(PEX_STATUS_REG(pex_if));
val &= ~PXSR_PEX_DEV_NUM_MASK;
val |= (dev_num << PXSR_PEX_DEV_NUM_OFFS) & PXSR_PEX_DEV_NUM_MASK;
reg_write(PEX_STATUS_REG(pex_if), val);
return MV_OK;
}