364 lines
8.5 KiB
C
364 lines
8.5 KiB
C
|
/*
|
||
|
|
* Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
|
||
|
|
* flexcop-sram.c - functions for controlling the SRAM
|
||
|
|
* see flexcop.c for copyright information
|
||
|
|
*/
|
||
|
|
#include "flexcop.h"
|
||
|
|
|
||
|
|
static void flexcop_sram_set_chip(struct flexcop_device *fc,
|
||
|
|
flexcop_sram_type_t type)
|
||
|
|
{
|
||
|
|
flexcop_set_ibi_value(wan_ctrl_reg_71c, sram_chip, type);
|
||
|
|
}
|
||
|
|
|
||
|
|
int flexcop_sram_init(struct flexcop_device *fc)
|
||
|
|
{
|
||
|
|
switch (fc->rev) {
|
||
|
|
case FLEXCOP_II:
|
||
|
|
case FLEXCOP_IIB:
|
||
|
|
flexcop_sram_set_chip(fc, FC_SRAM_1_32KB);
|
||
|
|
break;
|
||
|
|
case FLEXCOP_III:
|
||
|
|
flexcop_sram_set_chip(fc, FC_SRAM_1_48KB);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int flexcop_sram_set_dest(struct flexcop_device *fc, flexcop_sram_dest_t dest,
|
||
|
|
flexcop_sram_dest_target_t target)
|
||
|
|
{
|
||
|
|
flexcop_ibi_value v;
|
||
|
|
v = fc->read_ibi_reg(fc, sram_dest_reg_714);
|
||
|
|
|
||
|
|
if (fc->rev != FLEXCOP_III && target == FC_SRAM_DEST_TARGET_FC3_CA) {
|
||
|
|
err("SRAM destination target to available on FlexCopII(b)\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
deb_sram("sram dest: %x target: %x\n", dest, target);
|
||
|
|
|
||
|
|
if (dest & FC_SRAM_DEST_NET)
|
||
|
|
v.sram_dest_reg_714.NET_Dest = target;
|
||
|
|
if (dest & FC_SRAM_DEST_CAI)
|
||
|
|
v.sram_dest_reg_714.CAI_Dest = target;
|
||
|
|
if (dest & FC_SRAM_DEST_CAO)
|
||
|
|
v.sram_dest_reg_714.CAO_Dest = target;
|
||
|
|
if (dest & FC_SRAM_DEST_MEDIA)
|
||
|
|
v.sram_dest_reg_714.MEDIA_Dest = target;
|
||
|
|
|
||
|
|
fc->write_ibi_reg(fc,sram_dest_reg_714,v);
|
||
|
|
udelay(1000); /* TODO delay really necessary */
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(flexcop_sram_set_dest);
|
||
|
|
|
||
|
|
void flexcop_wan_set_speed(struct flexcop_device *fc, flexcop_wan_speed_t s)
|
||
|
|
{
|
||
|
|
flexcop_set_ibi_value(wan_ctrl_reg_71c,wan_speed_sig,s);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(flexcop_wan_set_speed);
|
||
|
|
|
||
|
|
void flexcop_sram_ctrl(struct flexcop_device *fc, int usb_wan, int sramdma, int maximumfill)
|
||
|
|
{
|
||
|
|
flexcop_ibi_value v = fc->read_ibi_reg(fc,sram_dest_reg_714);
|
||
|
|
v.sram_dest_reg_714.ctrl_usb_wan = usb_wan;
|
||
|
|
v.sram_dest_reg_714.ctrl_sramdma = sramdma;
|
||
|
|
v.sram_dest_reg_714.ctrl_maximumfill = maximumfill;
|
||
|
|
fc->write_ibi_reg(fc,sram_dest_reg_714,v);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(flexcop_sram_ctrl);
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static void flexcop_sram_write(struct adapter *adapter, u32 bank, u32 addr, u8 *buf, u32 len)
|
||
|
|
{
|
||
|
|
int i, retries;
|
||
|
|
u32 command;
|
||
|
|
|
||
|
|
for (i = 0; i < len; i++) {
|
||
|
|
command = bank | addr | 0x04000000 | (*buf << 0x10);
|
||
|
|
|
||
|
|
retries = 2;
|
||
|
|
|
||
|
|
while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
|
||
|
|
mdelay(1);
|
||
|
|
retries--;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (retries == 0)
|
||
|
|
printk("%s: SRAM timeout\n", __func__);
|
||
|
|
|
||
|
|
write_reg_dw(adapter, 0x700, command);
|
||
|
|
|
||
|
|
buf++;
|
||
|
|
addr++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void flex_sram_read(struct adapter *adapter, u32 bank, u32 addr, u8 *buf, u32 len)
|
||
|
|
{
|
||
|
|
int i, retries;
|
||
|
|
u32 command, value;
|
||
|
|
|
||
|
|
for (i = 0; i < len; i++) {
|
||
|
|
command = bank | addr | 0x04008000;
|
||
|
|
|
||
|
|
retries = 10000;
|
||
|
|
|
||
|
|
while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
|
||
|
|
mdelay(1);
|
||
|
|
retries--;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (retries == 0)
|
||
|
|
printk("%s: SRAM timeout\n", __func__);
|
||
|
|
|
||
|
|
write_reg_dw(adapter, 0x700, command);
|
||
|
|
|
||
|
|
retries = 10000;
|
||
|
|
|
||
|
|
while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
|
||
|
|
mdelay(1);
|
||
|
|
retries--;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (retries == 0)
|
||
|
|
printk("%s: SRAM timeout\n", __func__);
|
||
|
|
|
||
|
|
value = read_reg_dw(adapter, 0x700) >> 0x10;
|
||
|
|
|
||
|
|
*buf = (value & 0xff);
|
||
|
|
|
||
|
|
addr++;
|
||
|
|
buf++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_write_chunk(struct adapter *adapter, u32 addr, u8 *buf, u16 len)
|
||
|
|
{
|
||
|
|
u32 bank;
|
||
|
|
|
||
|
|
bank = 0;
|
||
|
|
|
||
|
|
if (adapter->dw_sram_type == 0x20000) {
|
||
|
|
bank = (addr & 0x18000) << 0x0d;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (adapter->dw_sram_type == 0x00000) {
|
||
|
|
if ((addr >> 0x0f) == 0)
|
||
|
|
bank = 0x20000000;
|
||
|
|
else
|
||
|
|
bank = 0x10000000;
|
||
|
|
}
|
||
|
|
flex_sram_write(adapter, bank, addr & 0x7fff, buf, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_read_chunk(struct adapter *adapter, u32 addr, u8 *buf, u16 len)
|
||
|
|
{
|
||
|
|
u32 bank;
|
||
|
|
bank = 0;
|
||
|
|
|
||
|
|
if (adapter->dw_sram_type == 0x20000) {
|
||
|
|
bank = (addr & 0x18000) << 0x0d;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (adapter->dw_sram_type == 0x00000) {
|
||
|
|
if ((addr >> 0x0f) == 0)
|
||
|
|
bank = 0x20000000;
|
||
|
|
else
|
||
|
|
bank = 0x10000000;
|
||
|
|
}
|
||
|
|
flex_sram_read(adapter, bank, addr & 0x7fff, buf, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_read(struct adapter *adapter, u32 addr, u8 *buf, u32 len)
|
||
|
|
{
|
||
|
|
u32 length;
|
||
|
|
while (len != 0) {
|
||
|
|
length = len;
|
||
|
|
/* check if the address range belongs to the same
|
||
|
|
* 32K memory chip. If not, the data is read
|
||
|
|
* from one chip at a time */
|
||
|
|
if ((addr >> 0x0f) != ((addr + len - 1) >> 0x0f)) {
|
||
|
|
length = (((addr >> 0x0f) + 1) << 0x0f) - addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
sram_read_chunk(adapter, addr, buf, length);
|
||
|
|
addr = addr + length;
|
||
|
|
buf = buf + length;
|
||
|
|
len = len - length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_write(struct adapter *adapter, u32 addr, u8 *buf, u32 len)
|
||
|
|
{
|
||
|
|
u32 length;
|
||
|
|
while (len != 0) {
|
||
|
|
length = len;
|
||
|
|
|
||
|
|
/* check if the address range belongs to the same
|
||
|
|
* 32K memory chip. If not, the data is
|
||
|
|
* written to one chip at a time */
|
||
|
|
if ((addr >> 0x0f) != ((addr + len - 1) >> 0x0f)) {
|
||
|
|
length = (((addr >> 0x0f) + 1) << 0x0f) - addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
sram_write_chunk(adapter, addr, buf, length);
|
||
|
|
addr = addr + length;
|
||
|
|
buf = buf + length;
|
||
|
|
len = len - length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_set_size(struct adapter *adapter, u32 mask)
|
||
|
|
{
|
||
|
|
write_reg_dw(adapter, 0x71c,
|
||
|
|
(mask | (~0x30000 & read_reg_dw(adapter, 0x71c))));
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sram_init(struct adapter *adapter)
|
||
|
|
{
|
||
|
|
u32 tmp;
|
||
|
|
tmp = read_reg_dw(adapter, 0x71c);
|
||
|
|
write_reg_dw(adapter, 0x71c, 1);
|
||
|
|
|
||
|
|
if (read_reg_dw(adapter, 0x71c) != 0) {
|
||
|
|
write_reg_dw(adapter, 0x71c, tmp);
|
||
|
|
adapter->dw_sram_type = tmp & 0x30000;
|
||
|
|
ddprintk("%s: dw_sram_type = %x\n", __func__, adapter->dw_sram_type);
|
||
|
|
} else {
|
||
|
|
adapter->dw_sram_type = 0x10000;
|
||
|
|
ddprintk("%s: dw_sram_type = %x\n", __func__, adapter->dw_sram_type);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int sram_test_location(struct adapter *adapter, u32 mask, u32 addr)
|
||
|
|
{
|
||
|
|
u8 tmp1, tmp2;
|
||
|
|
dprintk("%s: mask = %x, addr = %x\n", __func__, mask, addr);
|
||
|
|
|
||
|
|
sram_set_size(adapter, mask);
|
||
|
|
sram_init(adapter);
|
||
|
|
|
||
|
|
tmp2 = 0xa5;
|
||
|
|
tmp1 = 0x4f;
|
||
|
|
|
||
|
|
sram_write(adapter, addr, &tmp2, 1);
|
||
|
|
sram_write(adapter, addr + 4, &tmp1, 1);
|
||
|
|
|
||
|
|
tmp2 = 0;
|
||
|
|
mdelay(20);
|
||
|
|
|
||
|
|
sram_read(adapter, addr, &tmp2, 1);
|
||
|
|
sram_read(adapter, addr, &tmp2, 1);
|
||
|
|
|
||
|
|
dprintk("%s: wrote 0xa5, read 0x%2x\n", __func__, tmp2);
|
||
|
|
|
||
|
|
if (tmp2 != 0xa5)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
tmp2 = 0x5a;
|
||
|
|
tmp1 = 0xf4;
|
||
|
|
|
||
|
|
sram_write(adapter, addr, &tmp2, 1);
|
||
|
|
sram_write(adapter, addr + 4, &tmp1, 1);
|
||
|
|
|
||
|
|
tmp2 = 0;
|
||
|
|
mdelay(20);
|
||
|
|
|
||
|
|
sram_read(adapter, addr, &tmp2, 1);
|
||
|
|
sram_read(adapter, addr, &tmp2, 1);
|
||
|
|
|
||
|
|
dprintk("%s: wrote 0x5a, read 0x%2x\n", __func__, tmp2);
|
||
|
|
|
||
|
|
if (tmp2 != 0x5a)
|
||
|
|
return 0;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static u32 sram_length(struct adapter *adapter)
|
||
|
|
{
|
||
|
|
if (adapter->dw_sram_type == 0x10000)
|
||
|
|
return 32768; /* 32K */
|
||
|
|
if (adapter->dw_sram_type == 0x00000)
|
||
|
|
return 65536; /* 64K */
|
||
|
|
if (adapter->dw_sram_type == 0x20000)
|
||
|
|
return 131072; /* 128K */
|
||
|
|
return 32768; /* 32K */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* FlexcopII can work with 32K, 64K or 128K of external SRAM memory.
|
||
|
|
- for 128K there are 4x32K chips at bank 0,1,2,3.
|
||
|
|
- for 64K there are 2x32K chips at bank 1,2.
|
||
|
|
- for 32K there is one 32K chip at bank 0.
|
||
|
|
|
||
|
|
FlexCop works only with one bank at a time. The bank is selected
|
||
|
|
by bits 28-29 of the 0x700 register.
|
||
|
|
|
||
|
|
bank 0 covers addresses 0x00000-0x07fff
|
||
|
|
bank 1 covers addresses 0x08000-0x0ffff
|
||
|
|
bank 2 covers addresses 0x10000-0x17fff
|
||
|
|
bank 3 covers addresses 0x18000-0x1ffff */
|
||
|
|
|
||
|
|
static int flexcop_sram_detect(struct flexcop_device *fc)
|
||
|
|
{
|
||
|
|
flexcop_ibi_value r208, r71c_0, vr71c_1;
|
||
|
|
r208 = fc->read_ibi_reg(fc, ctrl_208);
|
||
|
|
fc->write_ibi_reg(fc, ctrl_208, ibi_zero);
|
||
|
|
|
||
|
|
r71c_0 = fc->read_ibi_reg(fc, wan_ctrl_reg_71c);
|
||
|
|
write_reg_dw(adapter, 0x71c, 1);
|
||
|
|
tmp3 = read_reg_dw(adapter, 0x71c);
|
||
|
|
dprintk("%s: tmp3 = %x\n", __func__, tmp3);
|
||
|
|
write_reg_dw(adapter, 0x71c, tmp2);
|
||
|
|
|
||
|
|
// check for internal SRAM ???
|
||
|
|
tmp3--;
|
||
|
|
if (tmp3 != 0) {
|
||
|
|
sram_set_size(adapter, 0x10000);
|
||
|
|
sram_init(adapter);
|
||
|
|
write_reg_dw(adapter, 0x208, tmp);
|
||
|
|
dprintk("%s: sram size = 32K\n", __func__);
|
||
|
|
return 32;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sram_test_location(adapter, 0x20000, 0x18000) != 0) {
|
||
|
|
sram_set_size(adapter, 0x20000);
|
||
|
|
sram_init(adapter);
|
||
|
|
write_reg_dw(adapter, 0x208, tmp);
|
||
|
|
dprintk("%s: sram size = 128K\n", __func__);
|
||
|
|
return 128;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sram_test_location(adapter, 0x00000, 0x10000) != 0) {
|
||
|
|
sram_set_size(adapter, 0x00000);
|
||
|
|
sram_init(adapter);
|
||
|
|
write_reg_dw(adapter, 0x208, tmp);
|
||
|
|
dprintk("%s: sram size = 64K\n", __func__);
|
||
|
|
return 64;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sram_test_location(adapter, 0x10000, 0x00000) != 0) {
|
||
|
|
sram_set_size(adapter, 0x10000);
|
||
|
|
sram_init(adapter);
|
||
|
|
write_reg_dw(adapter, 0x208, tmp);
|
||
|
|
dprintk("%s: sram size = 32K\n", __func__);
|
||
|
|
return 32;
|
||
|
|
}
|
||
|
|
|
||
|
|
sram_set_size(adapter, 0x10000);
|
||
|
|
sram_init(adapter);
|
||
|
|
write_reg_dw(adapter, 0x208, tmp);
|
||
|
|
dprintk("%s: SRAM detection failed. Set to 32K \n", __func__);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void sll_detect_sram_size(struct adapter *adapter)
|
||
|
|
{
|
||
|
|
sram_detect_for_flex2(adapter);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|