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freebsd/sys/arm/mv/mv_common.c
Warner Losh 59c993d121 Move all the files named foo/common.c to foo/foo_common.c, as 
appropriate for each of the 'foo' in the tree. This will allow us to
compile them together (although symbol conflicts prevent us from doing
that today, this just fixes the file name collision).
2014-03-08 00:14:40 +00:00

2211 lines
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/*-
* Copyright (C) 2008-2011 MARVELL INTERNATIONAL LTD.
* All rights reserved.
*
* Developed by Semihalf.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of MARVELL nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "opt_global.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/kdb.h>
#include <sys/reboot.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <machine/vmparam.h>
#include <arm/mv/mvreg.h>
#include <arm/mv/mvvar.h>
#include <arm/mv/mvwin.h>
MALLOC_DEFINE(M_IDMA, "idma", "idma dma test memory");
#define IDMA_DEBUG
#undef IDMA_DEBUG
#define MAX_CPU_WIN 5
#ifdef DEBUG
#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
printf(fmt,##args); } while (0)
#else
#define debugf(fmt, args...)
#endif
#ifdef DEBUG
#define MV_DUMP_WIN 1
#else
#define MV_DUMP_WIN 0
#endif
static int win_eth_can_remap(int i);
#ifndef SOC_MV_FREY
static int decode_win_cpu_valid(void);
#endif
static int decode_win_usb_valid(void);
static int decode_win_eth_valid(void);
static int decode_win_pcie_valid(void);
static int decode_win_sata_valid(void);
static int decode_win_idma_valid(void);
static int decode_win_xor_valid(void);
#ifndef SOC_MV_FREY
static void decode_win_cpu_setup(void);
#endif
#ifdef SOC_MV_ARMADAXP
static int decode_win_sdram_fixup(void);
#endif
static void decode_win_usb_setup(u_long);
static void decode_win_eth_setup(u_long);
static void decode_win_sata_setup(u_long);
static void decode_win_idma_setup(u_long);
static void decode_win_xor_setup(u_long);
static void decode_win_usb_dump(u_long);
static void decode_win_eth_dump(u_long base);
static void decode_win_idma_dump(u_long base);
static void decode_win_xor_dump(u_long base);
static int fdt_get_ranges(const char *, void *, int, int *, int *);
static int win_cpu_from_dt(void);
static int fdt_win_setup(void);
static uint32_t dev_mask = 0;
static int cpu_wins_no = 0;
static int eth_port = 0;
static int usb_port = 0;
static struct decode_win cpu_win_tbl[MAX_CPU_WIN];
const struct decode_win *cpu_wins = cpu_win_tbl;
typedef void (*decode_win_setup_t)(u_long);
typedef void (*dump_win_t)(u_long);
struct soc_node_spec {
const char *compat;
decode_win_setup_t decode_handler;
dump_win_t dump_handler;
};
static struct soc_node_spec soc_nodes[] = {
{ "mrvl,ge", &decode_win_eth_setup, &decode_win_eth_dump },
{ "mrvl,usb-ehci", &decode_win_usb_setup, &decode_win_usb_dump },
{ "mrvl,sata", &decode_win_sata_setup, NULL },
{ "mrvl,xor", &decode_win_xor_setup, &decode_win_xor_dump },
{ "mrvl,idma", &decode_win_idma_setup, &decode_win_idma_dump },
{ "mrvl,pcie", &decode_win_pcie_setup, NULL },
{ NULL, NULL, NULL },
};
struct fdt_pm_mask_entry fdt_pm_mask_table[] = {
{ "mrvl,ge", CPU_PM_CTRL_GE(0) },
{ "mrvl,ge", CPU_PM_CTRL_GE(1) },
{ "mrvl,usb-ehci", CPU_PM_CTRL_USB(0) },
{ "mrvl,usb-ehci", CPU_PM_CTRL_USB(1) },
{ "mrvl,usb-ehci", CPU_PM_CTRL_USB(2) },
{ "mrvl,xor", CPU_PM_CTRL_XOR },
{ "mrvl,sata", CPU_PM_CTRL_SATA },
{ NULL, 0 }
};
static __inline int
pm_is_disabled(uint32_t mask)
{
#if defined(SOC_MV_KIRKWOOD)
return (soc_power_ctrl_get(mask) == mask);
#else
return (soc_power_ctrl_get(mask) == mask ? 0 : 1);
#endif
}
/*
* Disable device using power management register.
* 1 - Device Power On
* 0 - Device Power Off
* Mask can be set in loader.
* EXAMPLE:
* loader> set hw.pm-disable-mask=0x2
*
* Common mask:
* |-------------------------------|
* | Device | Kirkwood | Discovery |
* |-------------------------------|
* | USB0 | 0x00008 | 0x020000 |
* |-------------------------------|
* | USB1 | - | 0x040000 |
* |-------------------------------|
* | USB2 | - | 0x080000 |
* |-------------------------------|
* | GE0 | 0x00001 | 0x000002 |
* |-------------------------------|
* | GE1 | - | 0x000004 |
* |-------------------------------|
* | IDMA | - | 0x100000 |
* |-------------------------------|
* | XOR | 0x10000 | 0x200000 |
* |-------------------------------|
* | CESA | 0x20000 | 0x400000 |
* |-------------------------------|
* | SATA | 0x04000 | 0x004000 |
* --------------------------------|
* This feature can be used only on Kirkwood and Discovery
* machines.
*/
static __inline void
pm_disable_device(int mask)
{
#ifdef DIAGNOSTIC
uint32_t reg;
reg = soc_power_ctrl_get(CPU_PM_CTRL_ALL);
printf("Power Management Register: 0%x\n", reg);
reg &= ~mask;
soc_power_ctrl_set(reg);
printf("Device %x is disabled\n", mask);
reg = soc_power_ctrl_get(CPU_PM_CTRL_ALL);
printf("Power Management Register: 0%x\n", reg);
#endif
}
int
fdt_pm(phandle_t node)
{
uint32_t cpu_pm_ctrl;
int i, ena, compat;
ena = 1;
cpu_pm_ctrl = read_cpu_ctrl(CPU_PM_CTRL);
for (i = 0; fdt_pm_mask_table[i].compat != NULL; i++) {
if (dev_mask & (1 << i))
continue;
compat = fdt_is_compatible(node, fdt_pm_mask_table[i].compat);
#if defined(SOC_MV_KIRKWOOD)
if (compat && (cpu_pm_ctrl & fdt_pm_mask_table[i].mask)) {
dev_mask |= (1 << i);
ena = 0;
break;
} else if (compat) {
dev_mask |= (1 << i);
break;
}
#else
if (compat && (~cpu_pm_ctrl & fdt_pm_mask_table[i].mask)) {
dev_mask |= (1 << i);
ena = 0;
break;
} else if (compat) {
dev_mask |= (1 << i);
break;
}
#endif
}
return (ena);
}
uint32_t
read_cpu_ctrl(uint32_t reg)
{
return (bus_space_read_4(fdtbus_bs_tag, MV_CPU_CONTROL_BASE, reg));
}
void
write_cpu_ctrl(uint32_t reg, uint32_t val)
{
bus_space_write_4(fdtbus_bs_tag, MV_CPU_CONTROL_BASE, reg, val);
}
#if defined(SOC_MV_ARMADAXP)
uint32_t
read_cpu_mp_clocks(uint32_t reg)
{
return (bus_space_read_4(fdtbus_bs_tag, MV_MP_CLOCKS_BASE, reg));
}
void
write_cpu_mp_clocks(uint32_t reg, uint32_t val)
{
bus_space_write_4(fdtbus_bs_tag, MV_MP_CLOCKS_BASE, reg, val);
}
uint32_t
read_cpu_misc(uint32_t reg)
{
return (bus_space_read_4(fdtbus_bs_tag, MV_MISC_BASE, reg));
}
void
write_cpu_misc(uint32_t reg, uint32_t val)
{
bus_space_write_4(fdtbus_bs_tag, MV_MISC_BASE, reg, val);
}
#endif
void
cpu_reset(void)
{
#if defined(SOC_MV_ARMADAXP)
write_cpu_misc(RSTOUTn_MASK, SOFT_RST_OUT_EN);
write_cpu_misc(SYSTEM_SOFT_RESET, SYS_SOFT_RST);
#else
write_cpu_ctrl(RSTOUTn_MASK, SOFT_RST_OUT_EN);
write_cpu_ctrl(SYSTEM_SOFT_RESET, SYS_SOFT_RST);
#endif
while (1);
}
uint32_t
cpu_extra_feat(void)
{
uint32_t dev, rev;
uint32_t ef = 0;
soc_id(&dev, &rev);
switch (dev) {
case MV_DEV_88F6281:
case MV_DEV_88F6282:
case MV_DEV_88RC8180:
case MV_DEV_MV78100_Z0:
case MV_DEV_MV78100:
__asm __volatile("mrc p15, 1, %0, c15, c1, 0" : "=r" (ef));
break;
case MV_DEV_88F5182:
case MV_DEV_88F5281:
__asm __volatile("mrc p15, 0, %0, c14, c0, 0" : "=r" (ef));
break;
default:
if (bootverbose)
printf("This ARM Core does not support any extra features\n");
}
return (ef);
}
/*
* Get the power status of device. This feature is only supported on
* Kirkwood and Discovery SoCs.
*/
uint32_t
soc_power_ctrl_get(uint32_t mask)
{
#if !defined(SOC_MV_ORION) && !defined(SOC_MV_LOKIPLUS) && !defined(SOC_MV_FREY)
if (mask != CPU_PM_CTRL_NONE)
mask &= read_cpu_ctrl(CPU_PM_CTRL);
return (mask);
#else
return (mask);
#endif
}
/*
* Set the power status of device. This feature is only supported on
* Kirkwood and Discovery SoCs.
*/
void
soc_power_ctrl_set(uint32_t mask)
{
#if !defined(SOC_MV_ORION) && !defined(SOC_MV_LOKIPLUS)
if (mask != CPU_PM_CTRL_NONE)
write_cpu_ctrl(CPU_PM_CTRL, mask);
#endif
}
void
soc_id(uint32_t *dev, uint32_t *rev)
{
/*
* Notice: system identifiers are available in the registers range of
* PCIE controller, so using this function is only allowed (and
* possible) after the internal registers range has been mapped in via
* pmap_devmap_bootstrap().
*/
*dev = bus_space_read_4(fdtbus_bs_tag, MV_PCIE_BASE, 0) >> 16;
*rev = bus_space_read_4(fdtbus_bs_tag, MV_PCIE_BASE, 8) & 0xff;
}
static void
soc_identify(void)
{
uint32_t d, r, size, mode;
const char *dev;
const char *rev;
soc_id(&d, &r);
printf("SOC: ");
if (bootverbose)
printf("(0x%4x:0x%02x) ", d, r);
rev = "";
switch (d) {
case MV_DEV_88F5181:
dev = "Marvell 88F5181";
if (r == 3)
rev = "B1";
break;
case MV_DEV_88F5182:
dev = "Marvell 88F5182";
if (r == 2)
rev = "A2";
break;
case MV_DEV_88F5281:
dev = "Marvell 88F5281";
if (r == 4)
rev = "D0";
else if (r == 5)
rev = "D1";
else if (r == 6)
rev = "D2";
break;
case MV_DEV_88F6281:
dev = "Marvell 88F6281";
if (r == 0)
rev = "Z0";
else if (r == 2)
rev = "A0";
else if (r == 3)
rev = "A1";
break;
case MV_DEV_88RC8180:
dev = "Marvell 88RC8180";
break;
case MV_DEV_88RC9480:
dev = "Marvell 88RC9480";
break;
case MV_DEV_88RC9580:
dev = "Marvell 88RC9580";
break;
case MV_DEV_88F6781:
dev = "Marvell 88F6781";
if (r == 2)
rev = "Y0";
break;
case MV_DEV_88F6282:
dev = "Marvell 88F6282";
if (r == 0)
rev = "A0";
else if (r == 1)
rev = "A1";
break;
case MV_DEV_MV78100_Z0:
dev = "Marvell MV78100 Z0";
break;
case MV_DEV_MV78100:
dev = "Marvell MV78100";
break;
case MV_DEV_MV78160:
dev = "Marvell MV78160";
break;
case MV_DEV_MV78260:
dev = "Marvell MV78260";
break;
case MV_DEV_MV78460:
dev = "Marvell MV78460";
break;
default:
dev = "UNKNOWN";
break;
}
printf("%s", dev);
if (*rev != '\0')
printf(" rev %s", rev);
printf(", TClock %dMHz\n", get_tclk() / 1000 / 1000);
mode = read_cpu_ctrl(CPU_CONFIG);
printf(" Instruction cache prefetch %s, data cache prefetch %s\n",
(mode & CPU_CONFIG_IC_PREF) ? "enabled" : "disabled",
(mode & CPU_CONFIG_DC_PREF) ? "enabled" : "disabled");
switch (d) {
case MV_DEV_88F6281:
case MV_DEV_88F6282:
mode = read_cpu_ctrl(CPU_L2_CONFIG) & CPU_L2_CONFIG_MODE;
printf(" 256KB 4-way set-associative %s unified L2 cache\n",
mode ? "write-through" : "write-back");
break;
case MV_DEV_MV78100:
mode = read_cpu_ctrl(CPU_CONTROL);
size = mode & CPU_CONTROL_L2_SIZE;
mode = mode & CPU_CONTROL_L2_MODE;
printf(" %s set-associative %s unified L2 cache\n",
size ? "256KB 4-way" : "512KB 8-way",
mode ? "write-through" : "write-back");
break;
default:
break;
}
}
static void
platform_identify(void *dummy)
{
soc_identify();
/*
* XXX Board identification e.g. read out from FPGA or similar should
* go here
*/
}
SYSINIT(platform_identify, SI_SUB_CPU, SI_ORDER_SECOND, platform_identify,
NULL);
#ifdef KDB
static void
mv_enter_debugger(void *dummy)
{
if (boothowto & RB_KDB)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
}
SYSINIT(mv_enter_debugger, SI_SUB_CPU, SI_ORDER_ANY, mv_enter_debugger, NULL);
#endif
int
soc_decode_win(void)
{
uint32_t dev, rev;
int mask, err;
mask = 0;
TUNABLE_INT_FETCH("hw.pm-disable-mask", &mask);
if (mask != 0)
pm_disable_device(mask);
/* Retrieve data about physical addresses from device tree. */
if ((err = win_cpu_from_dt()) != 0)
return (err);
/* Retrieve our ID: some windows facilities vary between SoC models */
soc_id(&dev, &rev);
#ifdef SOC_MV_ARMADAXP
if ((err = decode_win_sdram_fixup()) != 0)
return(err);
#endif
#ifndef SOC_MV_FREY
if (!decode_win_cpu_valid() || !decode_win_usb_valid() ||
!decode_win_eth_valid() || !decode_win_idma_valid() ||
!decode_win_pcie_valid() || !decode_win_sata_valid() ||
!decode_win_xor_valid())
return (EINVAL);
decode_win_cpu_setup();
#else
if (!decode_win_usb_valid() ||
!decode_win_eth_valid() || !decode_win_idma_valid() ||
!decode_win_pcie_valid() || !decode_win_sata_valid() ||
!decode_win_xor_valid())
return (EINVAL);
#endif
if (MV_DUMP_WIN)
soc_dump_decode_win();
eth_port = 0;
usb_port = 0;
if ((err = fdt_win_setup()) != 0)
return (err);
return (0);
}
/**************************************************************************
* Decode windows registers accessors
**************************************************************************/
#if !defined(SOC_MV_FREY)
WIN_REG_IDX_RD(win_cpu, cr, MV_WIN_CPU_CTRL, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_RD(win_cpu, br, MV_WIN_CPU_BASE, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_RD(win_cpu, remap_l, MV_WIN_CPU_REMAP_LO, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_RD(win_cpu, remap_h, MV_WIN_CPU_REMAP_HI, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_WR(win_cpu, cr, MV_WIN_CPU_CTRL, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_WR(win_cpu, br, MV_WIN_CPU_BASE, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_WR(win_cpu, remap_l, MV_WIN_CPU_REMAP_LO, MV_MBUS_BRIDGE_BASE)
WIN_REG_IDX_WR(win_cpu, remap_h, MV_WIN_CPU_REMAP_HI, MV_MBUS_BRIDGE_BASE)
#endif
WIN_REG_BASE_IDX_RD(win_usb, cr, MV_WIN_USB_CTRL)
WIN_REG_BASE_IDX_RD(win_usb, br, MV_WIN_USB_BASE)
WIN_REG_BASE_IDX_WR(win_usb, cr, MV_WIN_USB_CTRL)
WIN_REG_BASE_IDX_WR(win_usb, br, MV_WIN_USB_BASE)
WIN_REG_BASE_IDX_RD(win_eth, br, MV_WIN_ETH_BASE)
WIN_REG_BASE_IDX_RD(win_eth, sz, MV_WIN_ETH_SIZE)
WIN_REG_BASE_IDX_RD(win_eth, har, MV_WIN_ETH_REMAP)
WIN_REG_BASE_IDX_WR(win_eth, br, MV_WIN_ETH_BASE)
WIN_REG_BASE_IDX_WR(win_eth, sz, MV_WIN_ETH_SIZE)
WIN_REG_BASE_IDX_WR(win_eth, har, MV_WIN_ETH_REMAP)
WIN_REG_BASE_IDX_RD2(win_xor, br, MV_WIN_XOR_BASE)
WIN_REG_BASE_IDX_RD2(win_xor, sz, MV_WIN_XOR_SIZE)
WIN_REG_BASE_IDX_RD2(win_xor, har, MV_WIN_XOR_REMAP)
WIN_REG_BASE_IDX_RD2(win_xor, ctrl, MV_WIN_XOR_CTRL)
WIN_REG_BASE_IDX_WR2(win_xor, br, MV_WIN_XOR_BASE)
WIN_REG_BASE_IDX_WR2(win_xor, sz, MV_WIN_XOR_SIZE)
WIN_REG_BASE_IDX_WR2(win_xor, har, MV_WIN_XOR_REMAP)
WIN_REG_BASE_IDX_WR2(win_xor, ctrl, MV_WIN_XOR_CTRL)
WIN_REG_BASE_RD(win_eth, bare, 0x290)
WIN_REG_BASE_RD(win_eth, epap, 0x294)
WIN_REG_BASE_WR(win_eth, bare, 0x290)
WIN_REG_BASE_WR(win_eth, epap, 0x294)
WIN_REG_BASE_IDX_RD(win_pcie, cr, MV_WIN_PCIE_CTRL);
WIN_REG_BASE_IDX_RD(win_pcie, br, MV_WIN_PCIE_BASE);
WIN_REG_BASE_IDX_RD(win_pcie, remap, MV_WIN_PCIE_REMAP);
WIN_REG_BASE_IDX_WR(win_pcie, cr, MV_WIN_PCIE_CTRL);
WIN_REG_BASE_IDX_WR(win_pcie, br, MV_WIN_PCIE_BASE);
WIN_REG_BASE_IDX_WR(win_pcie, remap, MV_WIN_PCIE_REMAP);
WIN_REG_BASE_IDX_RD(pcie_bar, br, MV_PCIE_BAR_BASE);
WIN_REG_BASE_IDX_WR(pcie_bar, br, MV_PCIE_BAR_BASE);
WIN_REG_BASE_IDX_WR(pcie_bar, brh, MV_PCIE_BAR_BASE_H);
WIN_REG_BASE_IDX_WR(pcie_bar, cr, MV_PCIE_BAR_CTRL);
WIN_REG_BASE_IDX_RD(win_idma, br, MV_WIN_IDMA_BASE)
WIN_REG_BASE_IDX_RD(win_idma, sz, MV_WIN_IDMA_SIZE)
WIN_REG_BASE_IDX_RD(win_idma, har, MV_WIN_IDMA_REMAP)
WIN_REG_BASE_IDX_RD(win_idma, cap, MV_WIN_IDMA_CAP)
WIN_REG_BASE_IDX_WR(win_idma, br, MV_WIN_IDMA_BASE)
WIN_REG_BASE_IDX_WR(win_idma, sz, MV_WIN_IDMA_SIZE)
WIN_REG_BASE_IDX_WR(win_idma, har, MV_WIN_IDMA_REMAP)
WIN_REG_BASE_IDX_WR(win_idma, cap, MV_WIN_IDMA_CAP)
WIN_REG_BASE_RD(win_idma, bare, 0xa80)
WIN_REG_BASE_WR(win_idma, bare, 0xa80)
WIN_REG_BASE_IDX_RD(win_sata, cr, MV_WIN_SATA_CTRL);
WIN_REG_BASE_IDX_RD(win_sata, br, MV_WIN_SATA_BASE);
WIN_REG_BASE_IDX_WR(win_sata, cr, MV_WIN_SATA_CTRL);
WIN_REG_BASE_IDX_WR(win_sata, br, MV_WIN_SATA_BASE);
#ifndef SOC_MV_DOVE
WIN_REG_IDX_RD(ddr, br, MV_WIN_DDR_BASE, MV_DDR_CADR_BASE)
WIN_REG_IDX_RD(ddr, sz, MV_WIN_DDR_SIZE, MV_DDR_CADR_BASE)
WIN_REG_IDX_WR(ddr, br, MV_WIN_DDR_BASE, MV_DDR_CADR_BASE)
WIN_REG_IDX_WR(ddr, sz, MV_WIN_DDR_SIZE, MV_DDR_CADR_BASE)
#else
/*
* On 88F6781 (Dove) SoC DDR Controller is accessed through
* single MBUS <-> AXI bridge. In this case we provide emulated
* ddr_br_read() and ddr_sz_read() functions to keep compatibility
* with common decoding windows setup code.
*/
static inline uint32_t ddr_br_read(int i)
{
uint32_t mmap;
/* Read Memory Address Map Register for CS i */
mmap = bus_space_read_4(fdtbus_bs_tag, MV_DDR_CADR_BASE + (i * 0x10), 0);
/* Return CS i base address */
return (mmap & 0xFF000000);
}
static inline uint32_t ddr_sz_read(int i)
{
uint32_t mmap, size;
/* Read Memory Address Map Register for CS i */
mmap = bus_space_read_4(fdtbus_bs_tag, MV_DDR_CADR_BASE + (i * 0x10), 0);
/* Extract size of CS space in 64kB units */
size = (1 << ((mmap >> 16) & 0x0F));
/* Return CS size and enable/disable status */
return (((size - 1) << 16) | (mmap & 0x01));
}
#endif
#if !defined(SOC_MV_FREY)
/**************************************************************************
* Decode windows helper routines
**************************************************************************/
void
soc_dump_decode_win(void)
{
uint32_t dev, rev;
int i;
soc_id(&dev, &rev);
for (i = 0; i < MV_WIN_CPU_MAX; i++) {
printf("CPU window#%d: c 0x%08x, b 0x%08x", i,
win_cpu_cr_read(i),
win_cpu_br_read(i));
if (win_cpu_can_remap(i))
printf(", rl 0x%08x, rh 0x%08x",
win_cpu_remap_l_read(i),
win_cpu_remap_h_read(i));
printf("\n");
}
printf("Internal regs base: 0x%08x\n",
bus_space_read_4(fdtbus_bs_tag, MV_INTREGS_BASE, 0));
for (i = 0; i < MV_WIN_DDR_MAX; i++)
printf("DDR CS#%d: b 0x%08x, s 0x%08x\n", i,
ddr_br_read(i), ddr_sz_read(i));
}
/**************************************************************************
* CPU windows routines
**************************************************************************/
int
win_cpu_can_remap(int i)
{
uint32_t dev, rev;
soc_id(&dev, &rev);
/* Depending on the SoC certain windows have remap capability */
if ((dev == MV_DEV_88F5182 && i < 2) ||
(dev == MV_DEV_88F5281 && i < 4) ||
(dev == MV_DEV_88F6281 && i < 4) ||
(dev == MV_DEV_88F6282 && i < 4) ||
(dev == MV_DEV_88RC8180 && i < 2) ||
(dev == MV_DEV_88F6781 && i < 4) ||
(dev == MV_DEV_MV78100_Z0 && i < 8) ||
((dev & MV_DEV_FAMILY_MASK) == MV_DEV_DISCOVERY && i < 8))
return (1);
return (0);
}
/* XXX This should check for overlapping remap fields too.. */
int
decode_win_overlap(int win, int win_no, const struct decode_win *wintab)
{
const struct decode_win *tab;
int i;
tab = wintab;
for (i = 0; i < win_no; i++, tab++) {
if (i == win)
/* Skip self */
continue;
if ((tab->base + tab->size - 1) < (wintab + win)->base)
continue;
else if (((wintab + win)->base + (wintab + win)->size - 1) <
tab->base)
continue;
else
return (i);
}
return (-1);
}
static int
decode_win_cpu_valid(void)
{
int i, j, rv;
uint32_t b, e, s;
if (cpu_wins_no > MV_WIN_CPU_MAX) {
printf("CPU windows: too many entries: %d\n", cpu_wins_no);
return (0);
}
rv = 1;
for (i = 0; i < cpu_wins_no; i++) {
if (cpu_wins[i].target == 0) {
printf("CPU window#%d: DDR target window is not "
"supposed to be reprogrammed!\n", i);
rv = 0;
}
if (cpu_wins[i].remap != ~0 && win_cpu_can_remap(i) != 1) {
printf("CPU window#%d: not capable of remapping, but "
"val 0x%08x defined\n", i, cpu_wins[i].remap);
rv = 0;
}
s = cpu_wins[i].size;
b = cpu_wins[i].base;
e = b + s - 1;
if (s > (0xFFFFFFFF - b + 1)) {
/*
* XXX this boundary check should account for 64bit
* and remapping..
*/
printf("CPU window#%d: no space for size 0x%08x at "
"0x%08x\n", i, s, b);
rv = 0;
continue;
}
if (b != (b & ~(s - 1))) {
printf("CPU window#%d: address 0x%08x is not aligned "
"to 0x%08x\n", i, b, s);
rv = 0;
continue;
}
j = decode_win_overlap(i, cpu_wins_no, &cpu_wins[0]);
if (j >= 0) {
printf("CPU window#%d: (0x%08x - 0x%08x) overlaps "
"with #%d (0x%08x - 0x%08x)\n", i, b, e, j,
cpu_wins[j].base,
cpu_wins[j].base + cpu_wins[j].size - 1);
rv = 0;
}
}
return (rv);
}
int
decode_win_cpu_set(int target, int attr, vm_paddr_t base, uint32_t size,
vm_paddr_t remap)
{
uint32_t br, cr;
int win, i;
if (remap == ~0) {
win = MV_WIN_CPU_MAX - 1;
i = -1;
} else {
win = 0;
i = 1;
}
while ((win >= 0) && (win < MV_WIN_CPU_MAX)) {
cr = win_cpu_cr_read(win);
if ((cr & MV_WIN_CPU_ENABLE_BIT) == 0)
break;
if ((cr & ((0xff << MV_WIN_CPU_ATTR_SHIFT) |
(0x1f << MV_WIN_CPU_TARGET_SHIFT))) ==
((attr << MV_WIN_CPU_ATTR_SHIFT) |
(target << MV_WIN_CPU_TARGET_SHIFT)))
break;
win += i;
}
if ((win < 0) || (win >= MV_WIN_CPU_MAX) ||
((remap != ~0) && (win_cpu_can_remap(win) == 0)))
return (-1);
br = base & 0xffff0000;
win_cpu_br_write(win, br);
if (win_cpu_can_remap(win)) {
if (remap != ~0) {
win_cpu_remap_l_write(win, remap & 0xffff0000);
win_cpu_remap_h_write(win, 0);
} else {
/*
* Remap function is not used for a given window
* (capable of remapping) - set remap field with the
* same value as base.
*/
win_cpu_remap_l_write(win, base & 0xffff0000);
win_cpu_remap_h_write(win, 0);
}
}
cr = ((size - 1) & 0xffff0000) | (attr << MV_WIN_CPU_ATTR_SHIFT) |
(target << MV_WIN_CPU_TARGET_SHIFT) | MV_WIN_CPU_ENABLE_BIT;
win_cpu_cr_write(win, cr);
return (0);
}
static void
decode_win_cpu_setup(void)
{
int i;
/* Disable all CPU windows */
for (i = 0; i < MV_WIN_CPU_MAX; i++) {
win_cpu_cr_write(i, 0);
win_cpu_br_write(i, 0);
if (win_cpu_can_remap(i)) {
win_cpu_remap_l_write(i, 0);
win_cpu_remap_h_write(i, 0);
}
}
for (i = 0; i < cpu_wins_no; i++)
if (cpu_wins[i].target > 0)
decode_win_cpu_set(cpu_wins[i].target,
cpu_wins[i].attr, cpu_wins[i].base,
cpu_wins[i].size, cpu_wins[i].remap);
}
#endif
#ifdef SOC_MV_ARMADAXP
static int
decode_win_sdram_fixup(void)
{
struct mem_region mr[FDT_MEM_REGIONS];
uint8_t window_valid[MV_WIN_DDR_MAX];
int mr_cnt, memsize, err, i, j;
uint32_t valid_win_num = 0;
/* Grab physical memory regions information from device tree. */
err = fdt_get_mem_regions(mr, &mr_cnt, &memsize);
if (err != 0)
return (err);
for (i = 0; i < MV_WIN_DDR_MAX; i++)
window_valid[i] = 0;
/* Try to match entries from device tree with settings from u-boot */
for (i = 0; i < mr_cnt; i++) {
for (j = 0; j < MV_WIN_DDR_MAX; j++) {
if (ddr_is_active(j) &&
(ddr_base(j) == mr[i].mr_start) &&
(ddr_size(j) == mr[i].mr_size)) {
window_valid[j] = 1;
valid_win_num++;
}
}
}
if (mr_cnt != valid_win_num)
return (EINVAL);
/* Destroy windows without corresponding device tree entry */
for (j = 0; j < MV_WIN_DDR_MAX; j++) {
if (ddr_is_active(j) && (window_valid[j] != 1)) {
printf("Disabling SDRAM decoding window: %d\n", j);
ddr_disable(j);
}
}
return (0);
}
#endif
/*
* Check if we're able to cover all active DDR banks.
*/
static int
decode_win_can_cover_ddr(int max)
{
int i, c;
c = 0;
for (i = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i))
c++;
if (c > max) {
printf("Unable to cover all active DDR banks: "
"%d, available windows: %d\n", c, max);
return (0);
}
return (1);
}
/**************************************************************************
* DDR windows routines
**************************************************************************/
int
ddr_is_active(int i)
{
if (ddr_sz_read(i) & 0x1)
return (1);
return (0);
}
void
ddr_disable(int i)
{
ddr_sz_write(i, 0);
ddr_br_write(i, 0);
}
uint32_t
ddr_base(int i)
{
return (ddr_br_read(i) & 0xff000000);
}
uint32_t
ddr_size(int i)
{
return ((ddr_sz_read(i) | 0x00ffffff) + 1);
}
uint32_t
ddr_attr(int i)
{
uint32_t dev, rev;
soc_id(&dev, &rev);
if (dev == MV_DEV_88RC8180)
return ((ddr_sz_read(i) & 0xf0) >> 4);
if (dev == MV_DEV_88F6781)
return (0);
return (i == 0 ? 0xe :
(i == 1 ? 0xd :
(i == 2 ? 0xb :
(i == 3 ? 0x7 : 0xff))));
}
uint32_t
ddr_target(int i)
{
uint32_t dev, rev;
soc_id(&dev, &rev);
if (dev == MV_DEV_88RC8180) {
i = (ddr_sz_read(i) & 0xf0) >> 4;
return (i == 0xe ? 0xc :
(i == 0xd ? 0xd :
(i == 0xb ? 0xe :
(i == 0x7 ? 0xf : 0xc))));
}
/*
* On SOCs other than 88RC8180 Mbus unit ID for
* DDR SDRAM controller is always 0x0.
*/
return (0);
}
/**************************************************************************
* USB windows routines
**************************************************************************/
static int
decode_win_usb_valid(void)
{
return (decode_win_can_cover_ddr(MV_WIN_USB_MAX));
}
static void
decode_win_usb_dump(u_long base)
{
int i;
if (pm_is_disabled(CPU_PM_CTRL_USB(usb_port - 1)))
return;
for (i = 0; i < MV_WIN_USB_MAX; i++)
printf("USB window#%d: c 0x%08x, b 0x%08x\n", i,
win_usb_cr_read(base, i), win_usb_br_read(base, i));
}
/*
* Set USB decode windows.
*/
static void
decode_win_usb_setup(u_long base)
{
uint32_t br, cr;
int i, j;
if (pm_is_disabled(CPU_PM_CTRL_USB(usb_port)))
return;
usb_port++;
for (i = 0; i < MV_WIN_USB_MAX; i++) {
win_usb_cr_write(base, i, 0);
win_usb_br_write(base, i, 0);
}
/* Only access to active DRAM banks is required */
for (i = 0; i < MV_WIN_DDR_MAX; i++) {
if (ddr_is_active(i)) {
br = ddr_base(i);
/*
* XXX for 6281 we should handle Mbus write
* burst limit field in the ctrl reg
*/
cr = (((ddr_size(i) - 1) & 0xffff0000) |
(ddr_attr(i) << 8) |
(ddr_target(i) << 4) | 1);
/* Set the first free USB window */
for (j = 0; j < MV_WIN_USB_MAX; j++) {
if (win_usb_cr_read(base, j) & 0x1)
continue;
win_usb_br_write(base, j, br);
win_usb_cr_write(base, j, cr);
break;
}
}
}
}
/**************************************************************************
* ETH windows routines
**************************************************************************/
static int
win_eth_can_remap(int i)
{
/* ETH encode windows 0-3 have remap capability */
if (i < 4)
return (1);
return (0);
}
static int
eth_bare_read(uint32_t base, int i)
{
uint32_t v;
v = win_eth_bare_read(base);
v &= (1 << i);
return (v >> i);
}
static void
eth_bare_write(uint32_t base, int i, int val)
{
uint32_t v;
v = win_eth_bare_read(base);
v &= ~(1 << i);
v |= (val << i);
win_eth_bare_write(base, v);
}
static void
eth_epap_write(uint32_t base, int i, int val)
{
uint32_t v;
v = win_eth_epap_read(base);
v &= ~(0x3 << (i * 2));
v |= (val << (i * 2));
win_eth_epap_write(base, v);
}
static void
decode_win_eth_dump(u_long base)
{
int i;
if (pm_is_disabled(CPU_PM_CTRL_GE(eth_port - 1)))
return;
for (i = 0; i < MV_WIN_ETH_MAX; i++) {
printf("ETH window#%d: b 0x%08x, s 0x%08x", i,
win_eth_br_read(base, i),
win_eth_sz_read(base, i));
if (win_eth_can_remap(i))
printf(", ha 0x%08x",
win_eth_har_read(base, i));
printf("\n");
}
printf("ETH windows: bare 0x%08x, epap 0x%08x\n",
win_eth_bare_read(base),
win_eth_epap_read(base));
}
#if defined(SOC_MV_LOKIPLUS)
#define MV_WIN_ETH_DDR_TRGT(n) 0
#else
#define MV_WIN_ETH_DDR_TRGT(n) ddr_target(n)
#endif
static void
decode_win_eth_setup(u_long base)
{
uint32_t br, sz;
int i, j;
if (pm_is_disabled(CPU_PM_CTRL_GE(eth_port)))
return;
eth_port++;
/* Disable, clear and revoke protection for all ETH windows */
for (i = 0; i < MV_WIN_ETH_MAX; i++) {
eth_bare_write(base, i, 1);
eth_epap_write(base, i, 0);
win_eth_br_write(base, i, 0);
win_eth_sz_write(base, i, 0);
if (win_eth_can_remap(i))
win_eth_har_write(base, i, 0);
}
/* Only access to active DRAM banks is required */
for (i = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i)) {
br = ddr_base(i) | (ddr_attr(i) << 8) | MV_WIN_ETH_DDR_TRGT(i);
sz = ((ddr_size(i) - 1) & 0xffff0000);
/* Set the first free ETH window */
for (j = 0; j < MV_WIN_ETH_MAX; j++) {
if (eth_bare_read(base, j) == 0)
continue;
win_eth_br_write(base, j, br);
win_eth_sz_write(base, j, sz);
/* XXX remapping ETH windows not supported */
/* Set protection RW */
eth_epap_write(base, j, 0x3);
/* Enable window */
eth_bare_write(base, j, 0);
break;
}
}
}
static int
decode_win_eth_valid(void)
{
return (decode_win_can_cover_ddr(MV_WIN_ETH_MAX));
}
/**************************************************************************
* PCIE windows routines
**************************************************************************/
void
decode_win_pcie_setup(u_long base)
{
uint32_t size = 0, ddrbase = ~0;
uint32_t cr, br;
int i, j;
for (i = 0; i < MV_PCIE_BAR_MAX; i++) {
pcie_bar_br_write(base, i,
MV_PCIE_BAR_64BIT | MV_PCIE_BAR_PREFETCH_EN);
if (i < 3)
pcie_bar_brh_write(base, i, 0);
if (i > 0)
pcie_bar_cr_write(base, i, 0);
}
for (i = 0; i < MV_WIN_PCIE_MAX; i++) {
win_pcie_cr_write(base, i, 0);
win_pcie_br_write(base, i, 0);
win_pcie_remap_write(base, i, 0);
}
/* On End-Point only set BAR size to 1MB regardless of DDR size */
if ((bus_space_read_4(fdtbus_bs_tag, base, MV_PCIE_CONTROL)
& MV_PCIE_ROOT_CMPLX) == 0) {
pcie_bar_cr_write(base, 1, 0xf0000 | 1);
return;
}
for (i = 0; i < MV_WIN_DDR_MAX; i++) {
if (ddr_is_active(i)) {
/* Map DDR to BAR 1 */
cr = (ddr_size(i) - 1) & 0xffff0000;
size += ddr_size(i) & 0xffff0000;
cr |= (ddr_attr(i) << 8) | (ddr_target(i) << 4) | 1;
br = ddr_base(i);
if (br < ddrbase)
ddrbase = br;
/* Use the first available PCIE window */
for (j = 0; j < MV_WIN_PCIE_MAX; j++) {
if (win_pcie_cr_read(base, j) != 0)
continue;
win_pcie_br_write(base, j, br);
win_pcie_cr_write(base, j, cr);
break;
}
}
}
/*
* Upper 16 bits in BAR register is interpreted as BAR size
* (in 64 kB units) plus 64kB, so substract 0x10000
* form value passed to register to get correct value.
*/
size -= 0x10000;
pcie_bar_cr_write(base, 1, size | 1);
pcie_bar_br_write(base, 1, ddrbase |
MV_PCIE_BAR_64BIT | MV_PCIE_BAR_PREFETCH_EN);
pcie_bar_br_write(base, 0, fdt_immr_pa |
MV_PCIE_BAR_64BIT | MV_PCIE_BAR_PREFETCH_EN);
}
static int
decode_win_pcie_valid(void)
{
return (decode_win_can_cover_ddr(MV_WIN_PCIE_MAX));
}
/**************************************************************************
* IDMA windows routines
**************************************************************************/
#if defined(SOC_MV_ORION) || defined(SOC_MV_DISCOVERY)
static int
idma_bare_read(u_long base, int i)
{
uint32_t v;
v = win_idma_bare_read(base);
v &= (1 << i);
return (v >> i);
}
static void
idma_bare_write(u_long base, int i, int val)
{
uint32_t v;
v = win_idma_bare_read(base);
v &= ~(1 << i);
v |= (val << i);
win_idma_bare_write(base, v);
}
/*
* Sets channel protection 'val' for window 'w' on channel 'c'
*/
static void
idma_cap_write(u_long base, int c, int w, int val)
{
uint32_t v;
v = win_idma_cap_read(base, c);
v &= ~(0x3 << (w * 2));
v |= (val << (w * 2));
win_idma_cap_write(base, c, v);
}
/*
* Set protection 'val' on all channels for window 'w'
*/
static void
idma_set_prot(u_long base, int w, int val)
{
int c;
for (c = 0; c < MV_IDMA_CHAN_MAX; c++)
idma_cap_write(base, c, w, val);
}
static int
win_idma_can_remap(int i)
{
/* IDMA decode windows 0-3 have remap capability */
if (i < 4)
return (1);
return (0);
}
void
decode_win_idma_setup(u_long base)
{
uint32_t br, sz;
int i, j;
if (pm_is_disabled(CPU_PM_CTRL_IDMA))
return;
/*
* Disable and clear all IDMA windows, revoke protection for all channels
*/
for (i = 0; i < MV_WIN_IDMA_MAX; i++) {
idma_bare_write(base, i, 1);
win_idma_br_write(base, i, 0);
win_idma_sz_write(base, i, 0);
if (win_idma_can_remap(i) == 1)
win_idma_har_write(base, i, 0);
}
for (i = 0; i < MV_IDMA_CHAN_MAX; i++)
win_idma_cap_write(base, i, 0);
/*
* Set up access to all active DRAM banks
*/
for (i = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i)) {
br = ddr_base(i) | (ddr_attr(i) << 8) | ddr_target(i);
sz = ((ddr_size(i) - 1) & 0xffff0000);
/* Place DDR entries in non-remapped windows */
for (j = 0; j < MV_WIN_IDMA_MAX; j++)
if (win_idma_can_remap(j) != 1 &&
idma_bare_read(base, j) == 1) {
/* Configure window */
win_idma_br_write(base, j, br);
win_idma_sz_write(base, j, sz);
/* Set protection RW on all channels */
idma_set_prot(base, j, 0x3);
/* Enable window */
idma_bare_write(base, j, 0);
break;
}
}
/*
* Remaining targets -- from statically defined table
*/
for (i = 0; i < idma_wins_no; i++)
if (idma_wins[i].target > 0) {
br = (idma_wins[i].base & 0xffff0000) |
(idma_wins[i].attr << 8) | idma_wins[i].target;
sz = ((idma_wins[i].size - 1) & 0xffff0000);
/* Set the first free IDMA window */
for (j = 0; j < MV_WIN_IDMA_MAX; j++) {
if (idma_bare_read(base, j) == 0)
continue;
/* Configure window */
win_idma_br_write(base, j, br);
win_idma_sz_write(base, j, sz);
if (win_idma_can_remap(j) &&
idma_wins[j].remap >= 0)
win_idma_har_write(base, j,
idma_wins[j].remap);
/* Set protection RW on all channels */
idma_set_prot(base, j, 0x3);
/* Enable window */
idma_bare_write(base, j, 0);
break;
}
}
}
int
decode_win_idma_valid(void)
{
const struct decode_win *wintab;
int c, i, j, rv;
uint32_t b, e, s;
if (idma_wins_no > MV_WIN_IDMA_MAX) {
printf("IDMA windows: too many entries: %d\n", idma_wins_no);
return (0);
}
for (i = 0, c = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i))
c++;
if (idma_wins_no > (MV_WIN_IDMA_MAX - c)) {
printf("IDMA windows: too many entries: %d, available: %d\n",
idma_wins_no, MV_WIN_IDMA_MAX - c);
return (0);
}
wintab = idma_wins;
rv = 1;
for (i = 0; i < idma_wins_no; i++, wintab++) {
if (wintab->target == 0) {
printf("IDMA window#%d: DDR target window is not "
"supposed to be reprogrammed!\n", i);
rv = 0;
}
if (wintab->remap >= 0 && win_cpu_can_remap(i) != 1) {
printf("IDMA window#%d: not capable of remapping, but "
"val 0x%08x defined\n", i, wintab->remap);
rv = 0;
}
s = wintab->size;
b = wintab->base;
e = b + s - 1;
if (s > (0xFFFFFFFF - b + 1)) {
/* XXX this boundary check should account for 64bit and
* remapping.. */
printf("IDMA window#%d: no space for size 0x%08x at "
"0x%08x\n", i, s, b);
rv = 0;
continue;
}
j = decode_win_overlap(i, idma_wins_no, &idma_wins[0]);
if (j >= 0) {
printf("IDMA window#%d: (0x%08x - 0x%08x) overlaps "
"with #%d (0x%08x - 0x%08x)\n", i, b, e, j,
idma_wins[j].base,
idma_wins[j].base + idma_wins[j].size - 1);
rv = 0;
}
}
return (rv);
}
void
decode_win_idma_dump(u_long base)
{
int i;
if (pm_is_disabled(CPU_PM_CTRL_IDMA))
return;
for (i = 0; i < MV_WIN_IDMA_MAX; i++) {
printf("IDMA window#%d: b 0x%08x, s 0x%08x", i,
win_idma_br_read(base, i), win_idma_sz_read(base, i));
if (win_idma_can_remap(i))
printf(", ha 0x%08x", win_idma_har_read(base, i));
printf("\n");
}
for (i = 0; i < MV_IDMA_CHAN_MAX; i++)
printf("IDMA channel#%d: ap 0x%08x\n", i,
win_idma_cap_read(base, i));
printf("IDMA windows: bare 0x%08x\n", win_idma_bare_read(base));
}
#else
/* Provide dummy functions to satisfy the build for SoCs not equipped with IDMA */
int
decode_win_idma_valid(void)
{
return (1);
}
void
decode_win_idma_setup(u_long base)
{
}
void
decode_win_idma_dump(u_long base)
{
}
#endif
/**************************************************************************
* XOR windows routines
**************************************************************************/
#if defined(SOC_MV_KIRKWOOD) || defined(SOC_MV_DISCOVERY)
static int
xor_ctrl_read(u_long base, int i, int c, int e)
{
uint32_t v;
v = win_xor_ctrl_read(base, c, e);
v &= (1 << i);
return (v >> i);
}
static void
xor_ctrl_write(u_long base, int i, int c, int e, int val)
{
uint32_t v;
v = win_xor_ctrl_read(base, c, e);
v &= ~(1 << i);
v |= (val << i);
win_xor_ctrl_write(base, c, e, v);
}
/*
* Set channel protection 'val' for window 'w' on channel 'c'
*/
static void
xor_chan_write(u_long base, int c, int e, int w, int val)
{
uint32_t v;
v = win_xor_ctrl_read(base, c, e);
v &= ~(0x3 << (w * 2 + 16));
v |= (val << (w * 2 + 16));
win_xor_ctrl_write(base, c, e, v);
}
/*
* Set protection 'val' on all channels for window 'w' on engine 'e'
*/
static void
xor_set_prot(u_long base, int w, int e, int val)
{
int c;
for (c = 0; c < MV_XOR_CHAN_MAX; c++)
xor_chan_write(base, c, e, w, val);
}
static int
win_xor_can_remap(int i)
{
/* XOR decode windows 0-3 have remap capability */
if (i < 4)
return (1);
return (0);
}
static int
xor_max_eng(void)
{
uint32_t dev, rev;
soc_id(&dev, &rev);
switch (dev) {
case MV_DEV_88F6281:
case MV_DEV_88F6282:
case MV_DEV_MV78130:
case MV_DEV_MV78160:
case MV_DEV_MV78230:
case MV_DEV_MV78260:
case MV_DEV_MV78460:
return (2);
case MV_DEV_MV78100:
case MV_DEV_MV78100_Z0:
return (1);
default:
return (0);
}
}
static void
xor_active_dram(u_long base, int c, int e, int *window)
{
uint32_t br, sz;
int i, m, w;
/*
* Set up access to all active DRAM banks
*/
m = xor_max_eng();
for (i = 0; i < m; i++)
if (ddr_is_active(i)) {
br = ddr_base(i) | (ddr_attr(i) << 8) |
ddr_target(i);
sz = ((ddr_size(i) - 1) & 0xffff0000);
/* Place DDR entries in non-remapped windows */
for (w = 0; w < MV_WIN_XOR_MAX; w++)
if (win_xor_can_remap(w) != 1 &&
(xor_ctrl_read(base, w, c, e) == 0) &&
w > *window) {
/* Configure window */
win_xor_br_write(base, w, e, br);
win_xor_sz_write(base, w, e, sz);
/* Set protection RW on all channels */
xor_set_prot(base, w, e, 0x3);
/* Enable window */
xor_ctrl_write(base, w, c, e, 1);
(*window)++;
break;
}
}
}
void
decode_win_xor_setup(u_long base)
{
uint32_t br, sz;
int i, j, z, e = 1, m, window;
if (pm_is_disabled(CPU_PM_CTRL_XOR))
return;
/*
* Disable and clear all XOR windows, revoke protection for all
* channels
*/
m = xor_max_eng();
for (j = 0; j < m; j++, e--) {
/* Number of non-remaped windows */
window = MV_XOR_NON_REMAP - 1;
for (i = 0; i < MV_WIN_XOR_MAX; i++) {
win_xor_br_write(base, i, e, 0);
win_xor_sz_write(base, i, e, 0);
}
if (win_xor_can_remap(i) == 1)
win_xor_har_write(base, i, e, 0);
for (i = 0; i < MV_XOR_CHAN_MAX; i++) {
win_xor_ctrl_write(base, i, e, 0);
xor_active_dram(base, i, e, &window);
}
/*
* Remaining targets -- from a statically defined table
*/
for (i = 0; i < xor_wins_no; i++)
if (xor_wins[i].target > 0) {
br = (xor_wins[i].base & 0xffff0000) |
(xor_wins[i].attr << 8) |
xor_wins[i].target;
sz = ((xor_wins[i].size - 1) & 0xffff0000);
/* Set the first free XOR window */
for (z = 0; z < MV_WIN_XOR_MAX; z++) {
if (xor_ctrl_read(base, z, 0, e) &&
xor_ctrl_read(base, z, 1, e))
continue;
/* Configure window */
win_xor_br_write(base, z, e, br);
win_xor_sz_write(base, z, e, sz);
if (win_xor_can_remap(z) &&
xor_wins[z].remap >= 0)
win_xor_har_write(base, z, e,
xor_wins[z].remap);
/* Set protection RW on all channels */
xor_set_prot(base, z, e, 0x3);
/* Enable window */
xor_ctrl_write(base, z, 0, e, 1);
xor_ctrl_write(base, z, 1, e, 1);
break;
}
}
}
}
int
decode_win_xor_valid(void)
{
const struct decode_win *wintab;
int c, i, j, rv;
uint32_t b, e, s;
if (xor_wins_no > MV_WIN_XOR_MAX) {
printf("XOR windows: too many entries: %d\n", xor_wins_no);
return (0);
}
for (i = 0, c = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i))
c++;
if (xor_wins_no > (MV_WIN_XOR_MAX - c)) {
printf("XOR windows: too many entries: %d, available: %d\n",
xor_wins_no, MV_WIN_IDMA_MAX - c);
return (0);
}
wintab = xor_wins;
rv = 1;
for (i = 0; i < xor_wins_no; i++, wintab++) {
if (wintab->target == 0) {
printf("XOR window#%d: DDR target window is not "
"supposed to be reprogrammed!\n", i);
rv = 0;
}
if (wintab->remap >= 0 && win_cpu_can_remap(i) != 1) {
printf("XOR window#%d: not capable of remapping, but "
"val 0x%08x defined\n", i, wintab->remap);
rv = 0;
}
s = wintab->size;
b = wintab->base;
e = b + s - 1;
if (s > (0xFFFFFFFF - b + 1)) {
/*
* XXX this boundary check should account for 64bit
* and remapping..
*/
printf("XOR window#%d: no space for size 0x%08x at "
"0x%08x\n", i, s, b);
rv = 0;
continue;
}
j = decode_win_overlap(i, xor_wins_no, &xor_wins[0]);
if (j >= 0) {
printf("XOR window#%d: (0x%08x - 0x%08x) overlaps "
"with #%d (0x%08x - 0x%08x)\n", i, b, e, j,
xor_wins[j].base,
xor_wins[j].base + xor_wins[j].size - 1);
rv = 0;
}
}
return (rv);
}
void
decode_win_xor_dump(u_long base)
{
int i, j;
int e = 1;
if (pm_is_disabled(CPU_PM_CTRL_XOR))
return;
for (j = 0; j < xor_max_eng(); j++, e--) {
for (i = 0; i < MV_WIN_XOR_MAX; i++) {
printf("XOR window#%d: b 0x%08x, s 0x%08x", i,
win_xor_br_read(base, i, e), win_xor_sz_read(base, i, e));
if (win_xor_can_remap(i))
printf(", ha 0x%08x", win_xor_har_read(base, i, e));
printf("\n");
}
for (i = 0; i < MV_XOR_CHAN_MAX; i++)
printf("XOR control#%d: 0x%08x\n", i,
win_xor_ctrl_read(base, i, e));
}
}
#else
/* Provide dummy functions to satisfy the build for SoCs not equipped with XOR */
static int
decode_win_xor_valid(void)
{
return (1);
}
static void
decode_win_xor_setup(u_long base)
{
}
static void
decode_win_xor_dump(u_long base)
{
}
#endif
/**************************************************************************
* SATA windows routines
**************************************************************************/
static void
decode_win_sata_setup(u_long base)
{
uint32_t cr, br;
int i, j;
if (pm_is_disabled(CPU_PM_CTRL_SATA))
return;
for (i = 0; i < MV_WIN_SATA_MAX; i++) {
win_sata_cr_write(base, i, 0);
win_sata_br_write(base, i, 0);
}
for (i = 0; i < MV_WIN_DDR_MAX; i++)
if (ddr_is_active(i)) {
cr = ((ddr_size(i) - 1) & 0xffff0000) |
(ddr_attr(i) << 8) | (ddr_target(i) << 4) | 1;
br = ddr_base(i);
/* Use the first available SATA window */
for (j = 0; j < MV_WIN_SATA_MAX; j++) {
if ((win_sata_cr_read(base, j) & 1) != 0)
continue;
win_sata_br_write(base, j, br);
win_sata_cr_write(base, j, cr);
break;
}
}
}
static int
decode_win_sata_valid(void)
{
uint32_t dev, rev;
soc_id(&dev, &rev);
if (dev == MV_DEV_88F5281)
return (1);
return (decode_win_can_cover_ddr(MV_WIN_SATA_MAX));
}
/**************************************************************************
* FDT parsing routines.
**************************************************************************/
static int
fdt_get_ranges(const char *nodename, void *buf, int size, int *tuples,
int *tuplesize)
{
phandle_t node;
pcell_t addr_cells, par_addr_cells, size_cells;
int len, tuple_size, tuples_count;
node = OF_finddevice(nodename);
if (node == -1)
return (EINVAL);
if ((fdt_addrsize_cells(node, &addr_cells, &size_cells)) != 0)
return (ENXIO);
par_addr_cells = fdt_parent_addr_cells(node);
if (par_addr_cells > 2)
return (ERANGE);
tuple_size = sizeof(pcell_t) * (addr_cells + par_addr_cells +
size_cells);
/* Note the OF_getprop_alloc() cannot be used at this early stage. */
len = OF_getprop(node, "ranges", buf, size);
/*
* XXX this does not handle the empty 'ranges;' case, which is
* legitimate and should be allowed.
*/
tuples_count = len / tuple_size;
if (tuples_count <= 0)
return (ERANGE);
if (fdt_ranges_verify(buf, tuples_count, par_addr_cells,
addr_cells, size_cells) != 0)
return (ERANGE);
*tuples = tuples_count;
*tuplesize = tuple_size;
return (0);
}
static int
win_cpu_from_dt(void)
{
pcell_t ranges[48];
phandle_t node;
int i, entry_size, err, t, tuple_size, tuples;
u_long sram_base, sram_size;
t = 0;
/* Retrieve 'ranges' property of '/localbus' node. */
if ((err = fdt_get_ranges("/localbus", ranges, sizeof(ranges),
&tuples, &tuple_size)) == 0) {
/*
* Fill CPU decode windows table.
*/
bzero((void *)&cpu_win_tbl, sizeof(cpu_win_tbl));
entry_size = tuple_size / sizeof(pcell_t);
cpu_wins_no = tuples;
for (i = 0, t = 0; t < tuples; i += entry_size, t++) {
cpu_win_tbl[t].target = 1;
cpu_win_tbl[t].attr = fdt32_to_cpu(ranges[i + 1]);
cpu_win_tbl[t].base = fdt32_to_cpu(ranges[i + 2]);
cpu_win_tbl[t].size = fdt32_to_cpu(ranges[i + 3]);
cpu_win_tbl[t].remap = ~0;
debugf("target = 0x%0x attr = 0x%0x base = 0x%0x "
"size = 0x%0x remap = 0x%0x\n",
cpu_win_tbl[t].target,
cpu_win_tbl[t].attr, cpu_win_tbl[t].base,
cpu_win_tbl[t].size, cpu_win_tbl[t].remap);
}
}
/*
* Retrieve CESA SRAM data.
*/
if ((node = OF_finddevice("sram")) != -1)
if (fdt_is_compatible(node, "mrvl,cesa-sram"))
goto moveon;
if ((node = OF_finddevice("/")) == 0)
return (ENXIO);
if ((node = fdt_find_compatible(node, "mrvl,cesa-sram", 0)) == 0)
/* SRAM block is not always present. */
return (0);
moveon:
sram_base = sram_size = 0;
if (fdt_regsize(node, &sram_base, &sram_size) != 0)
return (EINVAL);
cpu_win_tbl[t].target = MV_WIN_CESA_TARGET;
cpu_win_tbl[t].attr = MV_WIN_CESA_ATTR(1);
cpu_win_tbl[t].base = sram_base;
cpu_win_tbl[t].size = sram_size;
cpu_win_tbl[t].remap = ~0;
cpu_wins_no++;
debugf("sram: base = 0x%0lx size = 0x%0lx\n", sram_base, sram_size);
return (0);
}
static int
fdt_win_setup(void)
{
phandle_t node, child;
struct soc_node_spec *soc_node;
u_long size, base;
int err, i;
node = OF_finddevice("/");
if (node == -1)
panic("fdt_win_setup: no root node");
/*
* Traverse through all children of root and simple-bus nodes.
* For each found device retrieve decode windows data (if applicable).
*/
child = OF_child(node);
while (child != 0) {
for (i = 0; soc_nodes[i].compat != NULL; i++) {
soc_node = &soc_nodes[i];
if (!fdt_is_compatible(child, soc_node->compat))
continue;
err = fdt_regsize(child, &base, &size);
if (err != 0)
return (err);
base = (base & 0x000fffff) | fdt_immr_va;
if (soc_node->decode_handler != NULL)
soc_node->decode_handler(base);
else
return (ENXIO);
if (MV_DUMP_WIN && (soc_node->dump_handler != NULL))
soc_node->dump_handler(base);
}
/*
* Once done with root-level children let's move down to
* simple-bus and its children.
*/
child = OF_peer(child);
if ((child == 0) && (node == OF_finddevice("/"))) {
node = fdt_find_compatible(node, "simple-bus", 1);
if (node == 0)
return (ENXIO);
child = OF_child(node);
}
}
return (0);
}
static void
fdt_fixup_busfreq(phandle_t root)
{
phandle_t sb;
pcell_t freq;
freq = cpu_to_fdt32(get_tclk());
/*
* Fix bus speed in cpu node
*/
if ((sb = OF_finddevice("cpu")) != 0)
if (fdt_is_compatible_strict(sb, "ARM,88VS584"))
OF_setprop(sb, "bus-frequency", (void *)&freq,
sizeof(freq));
/*
* This fixup sets the simple-bus bus-frequency property.
*/
if ((sb = fdt_find_compatible(root, "simple-bus", 1)) != 0)
OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq));
}
static void
fdt_fixup_ranges(phandle_t root)
{
phandle_t node;
pcell_t par_addr_cells, addr_cells, size_cells;
pcell_t ranges[3], reg[2], *rangesptr;
int len, tuple_size, tuples_count;
uint32_t base;
/* Fix-up SoC ranges according to real fdt_immr_pa */
if ((node = fdt_find_compatible(root, "simple-bus", 1)) != 0) {
if (fdt_addrsize_cells(node, &addr_cells, &size_cells) == 0 &&
(par_addr_cells = fdt_parent_addr_cells(node) <= 2)) {
tuple_size = sizeof(pcell_t) * (par_addr_cells +
addr_cells + size_cells);
len = OF_getprop(node, "ranges", ranges,
sizeof(ranges));
tuples_count = len / tuple_size;
/* Unexpected settings are not supported */
if (tuples_count != 1)
goto fixup_failed;
rangesptr = &ranges[0];
rangesptr += par_addr_cells;
base = fdt_data_get((void *)rangesptr, addr_cells);
*rangesptr = cpu_to_fdt32(fdt_immr_pa);
if (OF_setprop(node, "ranges", (void *)&ranges[0],
sizeof(ranges)) < 0)
goto fixup_failed;
}
}
/* Fix-up PCIe reg according to real PCIe registers' PA */
if ((node = fdt_find_compatible(root, "mrvl,pcie", 1)) != 0) {
if (fdt_addrsize_cells(OF_parent(node), &par_addr_cells,
&size_cells) == 0) {
tuple_size = sizeof(pcell_t) * (par_addr_cells +
size_cells);
len = OF_getprop(node, "reg", reg, sizeof(reg));
tuples_count = len / tuple_size;
/* Unexpected settings are not supported */
if (tuples_count != 1)
goto fixup_failed;
base = fdt_data_get((void *)&reg[0], par_addr_cells);
base &= ~0xFF000000;
base |= fdt_immr_pa;
reg[0] = cpu_to_fdt32(base);
if (OF_setprop(node, "reg", (void *)&reg[0],
sizeof(reg)) < 0)
goto fixup_failed;
}
}
/* Fix-up succeeded. May return and continue */
return;
fixup_failed:
while (1) {
/*
* In case of any error while fixing ranges just hang.
* 1. No message can be displayed yet since console
* is not initialized.
* 2. Going further will cause failure on bus_space_map()
* relying on the wrong ranges or data abort when
* accessing PCIe registers.
*/
}
}
struct fdt_fixup_entry fdt_fixup_table[] = {
{ "mrvl,DB-88F6281", &fdt_fixup_busfreq },
{ "mrvl,DB-78460", &fdt_fixup_busfreq },
{ "mrvl,DB-78460", &fdt_fixup_ranges },
{ NULL, NULL }
};
static int
fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
int *pol)
{
if (!fdt_is_compatible(node, "mrvl,pic") &&
!fdt_is_compatible(node, "mrvl,mpic"))
return (ENXIO);
*interrupt = fdt32_to_cpu(intr[0]);
*trig = INTR_TRIGGER_CONFORM;
*pol = INTR_POLARITY_CONFORM;
return (0);
}
fdt_pic_decode_t fdt_pic_table[] = {
&fdt_pic_decode_ic,
NULL
};
uint64_t
get_sar_value(void)
{
uint32_t sar_low, sar_high;
#if defined(SOC_MV_ARMADAXP)
sar_high = bus_space_read_4(fdtbus_bs_tag, MV_MISC_BASE,
SAMPLE_AT_RESET_HI);
sar_low = bus_space_read_4(fdtbus_bs_tag, MV_MISC_BASE,
SAMPLE_AT_RESET_LO);
#else
/*
* TODO: Add getting proper values for other SoC configurations
*/
sar_high = 0;
sar_low = 0;
#endif
return (((uint64_t)sar_high << 32) | sar_low);
}
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