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freebsd-nq/sys/arm/mv/common.c

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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("$FreeBSD$");
#include <sys/systm.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <arm/mv/mvreg.h>
#include <arm/mv/mvvar.h>
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 void decode_win_cpu_setup(void);
static void decode_win_usb_setup(uint32_t ctrl);
static void decode_win_eth_setup(uint32_t base);
static void decode_win_pcie_setup(uint32_t base);
static uint32_t dev, rev;
static uint32_t used_cpu_wins;
uint32_t
read_cpu_ctrl(uint32_t reg)
{
return (bus_space_read_4(obio_tag, MV_CPU_CONTROL_BASE, reg));
}
void
write_cpu_ctrl(uint32_t reg, uint32_t val)
{
bus_space_write_4(obio_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 ef = 0;
soc_id(&dev, &rev);
if (dev == MV_DEV_88F6281 || 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);
}
uint32_t
soc_power_ctrl_get(uint32_t mask)
{
if (mask != CPU_PM_CTRL_NONE)
mask &= read_cpu_ctrl(CPU_PM_CTRL);
return (mask);
}
uint32_t
get_tclk(void)
{
#if defined(SOC_MV_DISCOVERY)
return (TCLK_200MHZ);
#else
return (TCLK_166MHZ);
#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(obio_tag, MV_PCIE_BASE, 0) >> 16;
*rev = bus_space_read_4(obio_tag, MV_PCIE_BASE, 8) & 0xff;
}
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";
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 */
}
int
soc_decode_win(void)
{
/* Retrieve our ID: some windows facilities vary between SoC models */
soc_id(&dev, &rev);
if (decode_win_cpu_valid() != 1 || decode_win_usb_valid() != 1 ||
decode_win_eth_valid() != 1 || decode_win_idma_valid() != 1 ||
decode_win_pcie_valid() != 1)
return(-1);
decode_win_cpu_setup();
decode_win_usb_setup(MV_USB0_BASE);
decode_win_eth_setup(MV_ETH0_BASE);
if (dev == MV_DEV_MV78100)
decode_win_eth_setup(MV_ETH1_BASE);
decode_win_idma_setup();
if (dev == MV_DEV_MV78100) {
decode_win_pcie_setup(MV_PCIE00_BASE);
decode_win_pcie_setup(MV_PCIE01_BASE);
decode_win_pcie_setup(MV_PCIE02_BASE);
decode_win_pcie_setup(MV_PCIE03_BASE);
decode_win_pcie_setup(MV_PCIE10_BASE);
decode_win_pcie_setup(MV_PCIE11_BASE);
decode_win_pcie_setup(MV_PCIE12_BASE);
decode_win_pcie_setup(MV_PCIE13_BASE);
} else
decode_win_pcie_setup(MV_PCIE_BASE);
/* TODO set up decode wins for SATA */
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_IDX_RD(win_usb, cr, MV_WIN_USB_CTRL, MV_USB_AWR_BASE)
WIN_REG_IDX_RD(win_usb, br, MV_WIN_USB_BASE, MV_USB_AWR_BASE)
WIN_REG_IDX_WR(win_usb, cr, MV_WIN_USB_CTRL, MV_USB_AWR_BASE)
WIN_REG_IDX_WR(win_usb, br, MV_WIN_USB_BASE, MV_USB_AWR_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_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_IDX_RD(win_idma, br, MV_WIN_IDMA_BASE, MV_IDMA_BASE)
WIN_REG_IDX_RD(win_idma, sz, MV_WIN_IDMA_SIZE, MV_IDMA_BASE)
WIN_REG_IDX_RD(win_idma, har, MV_WIN_IDMA_REMAP, MV_IDMA_BASE)
WIN_REG_IDX_RD(win_idma, cap, MV_WIN_IDMA_CAP, MV_IDMA_BASE)
WIN_REG_IDX_WR(win_idma, br, MV_WIN_IDMA_BASE, MV_IDMA_BASE)
WIN_REG_IDX_WR(win_idma, sz, MV_WIN_IDMA_SIZE, MV_IDMA_BASE)
WIN_REG_IDX_WR(win_idma, har, MV_WIN_IDMA_REMAP, MV_IDMA_BASE)
WIN_REG_IDX_WR(win_idma, cap, MV_WIN_IDMA_CAP, MV_IDMA_BASE)
WIN_REG_RD(win_idma, bare, 0xa80, MV_IDMA_BASE)
WIN_REG_WR(win_idma, bare, 0xa80, MV_IDMA_BASE)
/**************************************************************************
* Decode windows helper routines
**************************************************************************/
void
soc_dump_decode_win(void)
{
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(obio_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));
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(i), win_usb_br_read(i));
for (i = 0; i < MV_WIN_ETH_MAX; i++) {
printf("ETH window#%d: b 0x%08x, s 0x%08x", i,
win_eth_br_read(MV_ETH0_BASE, i),
win_eth_sz_read(MV_ETH0_BASE, i));
if (win_eth_can_remap(i))
printf(", ha 0x%08x",
win_eth_har_read(MV_ETH0_BASE, i));
printf("\n");
}
printf("ETH windows: bare 0x%08x, epap 0x%08x\n",
win_eth_bare_read(MV_ETH0_BASE),
win_eth_epap_read(MV_ETH0_BASE));
decode_win_idma_dump();
printf("\n");
}
/**************************************************************************
* CPU windows routines
**************************************************************************/
int
win_cpu_can_remap(int i)
{
/* 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))
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 (-1);
}
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 (-1);
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));
}
/*
* Set USB decode windows.
*/
static void
decode_win_usb_setup(uint32_t ctrl)
{
uint32_t br, cr;
int i, j;
/* Disable and clear all USB windows */
for (i = 0; i < MV_WIN_USB_MAX; i++) {
win_usb_cr_write(i, 0);
win_usb_br_write(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(j) & 0x1)
continue;
win_usb_br_write(j, br);
win_usb_cr_write(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_setup(uint32_t base)
{
uint32_t br, sz;
int i, j;
/* 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(uint32_t 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(int i)
{
uint32_t v;
v = win_idma_bare_read();
v &= (1 << i);
return (v >> i);
}
static void
idma_bare_write(int i, int val)
{
uint32_t v;
v = win_idma_bare_read();
v &= ~(1 << i);
v |= (val << i);
win_idma_bare_write(v);
}
/*
* Sets channel protection 'val' for window 'w' on channel 'c'
*/
static void
idma_cap_write(int c, int w, int val)
{
uint32_t v;
v = win_idma_cap_read(c);
v &= ~(0x3 << (w * 2));
v |= (val << (w * 2));
win_idma_cap_write(c, v);
}
/*
* Set protection 'val' on all channels for window 'w'
*/
static void
idma_set_prot(int w, int val)
{
int c;
for (c = 0; c < MV_IDMA_CHAN_MAX; c++)
idma_cap_write(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(void)
{
uint32_t br, sz;
int i, j;
/*
* Disable and clear all IDMA windows, revoke protection for all channels
*/
for (i = 0; i < MV_WIN_IDMA_MAX; i++) {
idma_bare_write(i, 1);
win_idma_br_write(i, 0);
win_idma_sz_write(i, 0);
if (win_idma_can_remap(i) == 1)
win_idma_har_write(i, 0);
}
for (i = 0; i < MV_IDMA_CHAN_MAX; i++)
win_idma_cap_write(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(j) == 1) {
/* Configure window */
win_idma_br_write(j, br);
win_idma_sz_write(j, sz);
/* Set protection RW on all channels */
idma_set_prot(j, 0x3);
/* Enable window */
idma_bare_write(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(j) == 0)
continue;
/* Configure window */
win_idma_br_write(j, br);
win_idma_sz_write(j, sz);
if (win_idma_can_remap(j) &&
idma_wins[j].remap >= 0)
win_idma_har_write(j, idma_wins[j].remap);
/* Set protection RW on all channels */
idma_set_prot(j, 0x3);
/* Enable window */
idma_bare_write(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 (-1);
}
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 (-1);
}
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(void)
{
int i;
for (i = 0; i < MV_WIN_IDMA_MAX; i++) {
printf("IDMA window#%d: b 0x%08x, s 0x%08x", i,
win_idma_br_read(i), win_idma_sz_read(i));
if (win_idma_can_remap(i))
printf(", ha 0x%08x", win_idma_har_read(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(i));
printf("IDMA windows: bare 0x%08x\n", win_idma_bare_read());
}
#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(void)
{
}
void
decode_win_idma_dump(void)
{
}
#endif
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