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/*-
* Copyright (C) 2008 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/mv/common.c 223665 2011-06-29 09:35:40Z kevlo $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <arm/mv/mvreg.h>
#include <arm/mv/mvvar.h>
#include <arm/mv/mvwin.h>
#define MAX_CPU_WIN 5
#define DEBUG
#undef DEBUG
#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);
static int decode_win_cpu_valid(void);
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_cesa_valid(void);
static int decode_win_idma_valid(void);
static int decode_win_xor_valid(void);
static void decode_win_cpu_setup(void);
static void decode_win_usb_setup(u_long);
static void decode_win_eth_setup(u_long);
static void decode_win_pcie_setup(u_long);
static void decode_win_sata_setup(u_long);
static void decode_win_cesa_setup(u_long);
static void decode_win_idma_setup(u_long);
static void decode_win_xor_setup(u_long);
static void decode_win_cesa_dump(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 used_cpu_wins;
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];
static 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,cesa", &decode_win_cesa_setup, &decode_win_cesa_dump },
{ "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,cesa", CPU_PM_CTRL_CRYPTO },
{ "mrvl,xor", CPU_PM_CTRL_XOR },
{ "mrvl,sata", CPU_PM_CTRL_SATA },
{ NULL, 0 }
};
static __inline int
pm_is_disabled(uint32_t mask)
{
return (soc_power_ctrl_get(mask) == mask ? 0 : 1);
}
/*
* 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 (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;
}
}
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);
}
void
cpu_reset(void)
{
write_cpu_ctrl(RSTOUTn_MASK, SOFT_RST_OUT_EN);
write_cpu_ctrl(SYSTEM_SOFT_RESET, SYS_SOFT_RST);
while (1);
}
uint32_t
cpu_extra_feat(void)
{
uint32_t dev, rev;
uint32_t ef = 0;
soc_id(&dev, &rev);
if (dev == MV_DEV_88F6281 || dev == MV_DEV_MV78100_Z0 ||
dev == MV_DEV_MV78100)
__asm __volatile("mrc p15, 1, %0, c15, c1, 0" : "=r" (ef));
else if (dev == MV_DEV_88F5182 || dev == MV_DEV_88F5281)
__asm __volatile("mrc p15, 0, %0, c14, c0, 0" : "=r" (ef));
else 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)
{
#ifndef SOC_MV_ORION
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)
{
#ifndef SOC_MV_ORION
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;
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_MV78100_Z0:
dev = "Marvell MV78100 Z0";
break;
case MV_DEV_MV78100:
dev = "Marvell MV78100";
break;
default:
dev = "UNKNOWN";
break;
}
printf("%s", dev);
if (*rev != '\0')
printf(" rev %s", rev);
printf(", TClock %dMHz\n", get_tclk() / 1000 / 1000);
/* TODO add info on currently set endianess */
}
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);
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);
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_cesa_valid() || !decode_win_xor_valid())
return (EINVAL);
decode_win_cpu_setup();
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
**************************************************************************/
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)
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_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_cesa, cr, MV_WIN_CESA_CTRL)
WIN_REG_BASE_IDX_RD(win_cesa, br, MV_WIN_CESA_BASE)
WIN_REG_BASE_IDX_WR(win_cesa, cr, MV_WIN_CESA_CTRL)
WIN_REG_BASE_IDX_WR(win_cesa, br, MV_WIN_CESA_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_WR(pcie, bar, MV_PCIE_BAR);
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);
/**************************************************************************
* 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_MV78100 && i < 8) ||
(dev == MV_DEV_MV78100_Z0 && 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;
}
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,
int remap)
{
uint32_t br, cr;
int win;
if (used_cpu_wins >= MV_WIN_CPU_MAX)
return (0);
win = used_cpu_wins++;
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 << 8) | (target << 4) | 1;
win_cpu_cr_write(win, cr);
return (0);
}
static void
decode_win_cpu_setup(void)
{
int i;
used_cpu_wins = 0;
/* 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);
}
/*
* 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);
}
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)
{
return (i == 0 ? 0xe :
(i == 1 ? 0xd :
(i == 2 ? 0xb :
(i == 3 ? 0x7 : 0xff))));
}
uint32_t
ddr_target(int i)
{
/* Mbus unit ID is 0x0 for DDR SDRAM controller */
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));
}
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) | ddr_target(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
**************************************************************************/
static void
decode_win_pcie_setup(u_long base)
{
uint32_t size = 0;
uint32_t cr, br;
int i, j;
for (i = 0; i < MV_PCIE_BAR_MAX; i++)
pcie_bar_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);
}
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);
/* 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_write(base, 0, size | 1);
}
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);
if (dev == MV_DEV_88F6281)
return (2);
else if ((dev == MV_DEV_MV78100) || (dev == MV_DEV_MV78100_Z0))
return (1);
else
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
/**************************************************************************
* CESA TDMA windows routines
**************************************************************************/
#if defined(SOC_MV_KIRKWOOD) || defined(SOC_MV_DISCOVERY)
/*
* Dump CESA TDMA decode windows.
*/
static void
decode_win_cesa_dump(u_long base)
{
int i;
if (pm_is_disabled(CPU_PM_CTRL_CRYPTO))
return;
for (i = 0; i < MV_WIN_CESA_MAX; i++)
printf("CESA window#%d: c 0x%08x, b 0x%08x\n", i,
win_cesa_cr_read(base, i), win_cesa_br_read(base, i));
}
/*
* Set CESA TDMA decode windows.
*/
static void
decode_win_cesa_setup(u_long base)
{
uint32_t br, cr;
int i, j;
if (pm_is_disabled(CPU_PM_CTRL_CRYPTO))
return;
/* Disable and clear all CESA windows */
for (i = 0; i < MV_WIN_CESA_MAX; i++) {
win_cesa_cr_write(base, i, 0);
win_cesa_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);
cr = (((ddr_size(i) - 1) & 0xffff0000) |
(ddr_attr(i) << 8) | (ddr_target(i) << 4) | 1);
/* Set the first available CESA window */
for (j = 0; j < MV_WIN_CESA_MAX; j++) {
if (win_cesa_cr_read(base, j) & 0x1)
continue;
win_cesa_br_write(base, j, br);
win_cesa_cr_write(base, j, cr);
break;
}
}
}
/*
* Check CESA TDMA decode windows.
*/
static int
decode_win_cesa_valid(void)
{
return (decode_win_can_cover_ddr(MV_WIN_CESA_MAX));
}
#else
/*
* Provide dummy functions to satisfy the build for SoCs not equipped with
* CESA
*/
static int
decode_win_cesa_valid(void)
{
return (1);
}
static void
decode_win_cesa_setup(u_long base)
{
}
static void
decode_win_cesa_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 <= 0)
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];
u_long sram_base, sram_size;
phandle_t node;
int i, entry_size, err, t, tuple_size, tuples;
/* Retrieve 'ranges' property of '/localbus' node. */
if ((err = fdt_get_ranges("/localbus", ranges, sizeof(ranges),
&tuples, &tuple_size)) != 0)
return (err);
/*
* 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 = -1;
debugf("target = 0x%0x attr = 0x%0x base = 0x%0x "
"size = 0x%0x remap = %d\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")) != 0)
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;
cpu_win_tbl[t].base = sram_base;
cpu_win_tbl[t].size = sram_size;
cpu_win_tbl[t].remap = -1;
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 == 0)
panic("fdt_win_setup: no root node");
node = fdt_find_compatible(node, "simple-bus", 1);
if (node == 0)
return (ENXIO);
/*
* Traverse through all children of simple-bus node, and retrieve
* decode windows data for devices (if applicable).
*/
for (child = OF_child(node); child != 0; child = OF_peer(child))
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 += 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);
}
return (0);
}
static void
fdt_fixup_busfreq(phandle_t root)
{
phandle_t sb;
pcell_t freq;
/*
* This fixup sets the simple-bus bus-frequency property.
*/
if ((sb = fdt_find_compatible(root, "simple-bus", 1)) == 0)
return;
freq = cpu_to_fdt32(get_tclk());
OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq));
}
struct fdt_fixup_entry fdt_fixup_table[] = {
{ "mrvl,DB-88F6281", &fdt_fixup_busfreq },
{ 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"))
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
};