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more danube 2 ifxmips transitions 

SVN-Revision: 9827
lede-17.01
John Crispin 2007-12-22 14:01:10 +00:00
parent d6211ec9e6
commit 7b00e985a1
9 changed files with 1705 additions and 0 deletions
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36
target/linux/ifxmips/files/arch/mips/ifxmips/Kconfig Normal file
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@ -0,0 +1,36 @@
# copyright 2007 john crispin <blogic@openwrt.org>
menu "IFXMips built-in"
config IFXMIPS_ASC_UART
bool "IFXMips asc uart"
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
default y
config MTD_IFXMIPS
bool "IFXMips flash map"
default y
config IFXMIPS_WDT
bool "IFXMips watchdog"
default y
config IFXMIPS_LED
bool "IFXMips led"
default y
config IFXMIPS_GPIO
bool "IFXMips gpio"
default y
config IFXMIPS_SSC
bool "IFXMips ssc"
default y
config IFXMIPS_EEPROM
bool "IFXMips eeprom"
default y
endmenu

4
target/linux/ifxmips/files/arch/mips/ifxmips/Makefile Normal file
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obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_KGDB) += kgdb_serial.o

758
target/linux/ifxmips/files/arch/mips/ifxmips/dma-core.c Normal file
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#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/selection.h>
#include <linux/kmod.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/ifxmips/ifxmips_dma.h>
#include <asm/ifxmips/ifxmips_pmu.h>
/*25 descriptors for each dma channel,4096/8/20=25.xx*/
#define IFXMIPS_DMA_DESCRIPTOR_OFFSET 25
#define MAX_DMA_DEVICE_NUM 6 /*max ports connecting to dma */
#define MAX_DMA_CHANNEL_NUM 20 /*max dma channels */
#define DMA_INT_BUDGET 100 /*budget for interrupt handling */
#define DMA_POLL_COUNTER 4 /*fix me, set the correct counter value here! */
extern void mask_and_ack_ifxmips_irq (unsigned int irq_nr);
extern void enable_ifxmips_irq (unsigned int irq_nr);
extern void disable_ifxmips_irq (unsigned int irq_nr);
u64 *g_desc_list;
_dma_device_info dma_devs[MAX_DMA_DEVICE_NUM];
_dma_channel_info dma_chan[MAX_DMA_CHANNEL_NUM];
char global_device_name[MAX_DMA_DEVICE_NUM][20] =
{ {"PPE"}, {"DEU"}, {"SPI"}, {"SDIO"}, {"MCTRL0"}, {"MCTRL1"} };
_dma_chan_map default_dma_map[MAX_DMA_CHANNEL_NUM] = {
{"PPE", IFXMIPS_DMA_RX, 0, IFXMIPS_DMA_CH0_INT, 0},
{"PPE", IFXMIPS_DMA_TX, 0, IFXMIPS_DMA_CH1_INT, 0},
{"PPE", IFXMIPS_DMA_RX, 1, IFXMIPS_DMA_CH2_INT, 1},
{"PPE", IFXMIPS_DMA_TX, 1, IFXMIPS_DMA_CH3_INT, 1},
{"PPE", IFXMIPS_DMA_RX, 2, IFXMIPS_DMA_CH4_INT, 2},
{"PPE", IFXMIPS_DMA_TX, 2, IFXMIPS_DMA_CH5_INT, 2},
{"PPE", IFXMIPS_DMA_RX, 3, IFXMIPS_DMA_CH6_INT, 3},
{"PPE", IFXMIPS_DMA_TX, 3, IFXMIPS_DMA_CH7_INT, 3},
{"DEU", IFXMIPS_DMA_RX, 0, IFXMIPS_DMA_CH8_INT, 0},
{"DEU", IFXMIPS_DMA_TX, 0, IFXMIPS_DMA_CH9_INT, 0},
{"DEU", IFXMIPS_DMA_RX, 1, IFXMIPS_DMA_CH10_INT, 1},
{"DEU", IFXMIPS_DMA_TX, 1, IFXMIPS_DMA_CH11_INT, 1},
{"SPI", IFXMIPS_DMA_RX, 0, IFXMIPS_DMA_CH12_INT, 0},
{"SPI", IFXMIPS_DMA_TX, 0, IFXMIPS_DMA_CH13_INT, 0},
{"SDIO", IFXMIPS_DMA_RX, 0, IFXMIPS_DMA_CH14_INT, 0},
{"SDIO", IFXMIPS_DMA_TX, 0, IFXMIPS_DMA_CH15_INT, 0},
{"MCTRL0", IFXMIPS_DMA_RX, 0, IFXMIPS_DMA_CH16_INT, 0},
{"MCTRL0", IFXMIPS_DMA_TX, 0, IFXMIPS_DMA_CH17_INT, 0},
{"MCTRL1", IFXMIPS_DMA_RX, 1, IFXMIPS_DMA_CH18_INT, 1},
{"MCTRL1", IFXMIPS_DMA_TX, 1, IFXMIPS_DMA_CH19_INT, 1}
};
_dma_chan_map *chan_map = default_dma_map;
volatile u32 g_ifxmips_dma_int_status = 0;
volatile int g_ifxmips_dma_in_process = 0;/*0=not in process,1=in process*/
void do_dma_tasklet (unsigned long);
DECLARE_TASKLET (dma_tasklet, do_dma_tasklet, 0);
u8*
common_buffer_alloc (int len, int *byte_offset, void **opt)
{
u8 *buffer = (u8 *) kmalloc (len * sizeof (u8), GFP_KERNEL);
*byte_offset = 0;
return buffer;
}
void
common_buffer_free (u8 *dataptr, void *opt)
{
if (dataptr)
kfree(dataptr);
}
void
enable_ch_irq (_dma_channel_info *pCh)
{
int chan_no = (int)(pCh - dma_chan);
int flag;
local_irq_save(flag);
writel(chan_no, IFXMIPS_DMA_CS);
writel(0x4a, IFXMIPS_DMA_CIE);
writel(readl(IFXMIPS_DMA_IRNEN) | (1 << chan_no), IFXMIPS_DMA_IRNEN);
local_irq_restore(flag);
enable_ifxmips_irq(pCh->irq);
}
void
disable_ch_irq (_dma_channel_info *pCh)
{
int flag;
int chan_no = (int) (pCh - dma_chan);
local_irq_save(flag);
g_ifxmips_dma_int_status &= ~(1 << chan_no);
writel(chan_no, IFXMIPS_DMA_CS);
writel(0, IFXMIPS_DMA_CIE);
writel(readl(IFXMIPS_DMA_IRNEN) & ~(1 << chan_no), IFXMIPS_DMA_IRNEN);
local_irq_restore(flag);
mask_and_ack_ifxmips_irq(pCh->irq);
}
void
open_chan (_dma_channel_info *pCh)
{
int flag;
int chan_no = (int)(pCh - dma_chan);
local_irq_save(flag);
writel(chan_no, IFXMIPS_DMA_CS);
writel(readl(IFXMIPS_DMA_CCTRL) | 1, IFXMIPS_DMA_CCTRL);
if(pCh->dir == IFXMIPS_DMA_RX)
enable_ch_irq(pCh);
local_irq_restore(flag);
}
void
close_chan(_dma_channel_info *pCh)
{
int flag;
int chan_no = (int) (pCh - dma_chan);
local_irq_save(flag);
writel(chan_no, IFXMIPS_DMA_CS);
writel(readl(IFXMIPS_DMA_CCTRL) & ~1, IFXMIPS_DMA_CCTRL);
disable_ch_irq(pCh);
local_irq_restore(flag);
}
void
reset_chan (_dma_channel_info *pCh)
{
int chan_no = (int) (pCh - dma_chan);
writel(chan_no, IFXMIPS_DMA_CS);
writel(readl(IFXMIPS_DMA_CCTRL) | 2, IFXMIPS_DMA_CCTRL);
}
void
rx_chan_intr_handler (int chan_no)
{
_dma_device_info *pDev = (_dma_device_info *)dma_chan[chan_no].dma_dev;
_dma_channel_info *pCh = &dma_chan[chan_no];
struct rx_desc *rx_desc_p;
int tmp;
int flag;
/*handle command complete interrupt */
rx_desc_p = (struct rx_desc*)pCh->desc_base + pCh->curr_desc;
if (rx_desc_p->status.field.OWN == CPU_OWN
&& rx_desc_p->status.field.C
&& rx_desc_p->status.field.data_length < 1536){
/*Every thing is correct, then we inform the upper layer */
pDev->current_rx_chan = pCh->rel_chan_no;
if(pDev->intr_handler)
pDev->intr_handler(pDev, RCV_INT);
pCh->weight--;
} else {
local_irq_save(flag);
tmp = readl(IFXMIPS_DMA_CS);
writel(chan_no, IFXMIPS_DMA_CS);
writel(readl(IFXMIPS_DMA_CIS) | 0x7e, IFXMIPS_DMA_CIS);
writel(tmp, IFXMIPS_DMA_CS);
g_ifxmips_dma_int_status &= ~(1 << chan_no);
local_irq_restore(flag);
enable_ifxmips_irq(dma_chan[chan_no].irq);
}
}
inline void
tx_chan_intr_handler (int chan_no)
{
_dma_device_info *pDev = (_dma_device_info*)dma_chan[chan_no].dma_dev;
_dma_channel_info *pCh = &dma_chan[chan_no];
int tmp;
int flag;
local_irq_save(flag);
tmp = readl(IFXMIPS_DMA_CS);
writel(chan_no, IFXMIPS_DMA_CS);
writel(readl(IFXMIPS_DMA_CIS) | 0x7e, IFXMIPS_DMA_CIS);
writel(tmp, IFXMIPS_DMA_CS);
g_ifxmips_dma_int_status &= ~(1 << chan_no);
local_irq_restore(flag);
pDev->current_tx_chan = pCh->rel_chan_no;
if (pDev->intr_handler)
pDev->intr_handler(pDev, TRANSMIT_CPT_INT);
}
void
do_dma_tasklet (unsigned long unused)
{
int i;
int chan_no = 0;
int budget = DMA_INT_BUDGET;
int weight = 0;
int flag;
while (g_ifxmips_dma_int_status)
{
if (budget-- < 0)
{
tasklet_schedule(&dma_tasklet);
return;
}
chan_no = -1;
weight = 0;
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
{
if ((g_ifxmips_dma_int_status & (1 << i)) && dma_chan[i].weight > 0)
{
if (dma_chan[i].weight > weight)
{
chan_no = i;
weight = dma_chan[chan_no].weight;
}
}
}
if (chan_no >= 0)
{
if (chan_map[chan_no].dir == IFXMIPS_DMA_RX)
rx_chan_intr_handler(chan_no);
else
tx_chan_intr_handler(chan_no);
} else {
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
{
dma_chan[i].weight = dma_chan[i].default_weight;
}
}
}
local_irq_save(flag);
g_ifxmips_dma_in_process = 0;
if (g_ifxmips_dma_int_status)
{
g_ifxmips_dma_in_process = 1;
tasklet_schedule(&dma_tasklet);
}
local_irq_restore(flag);
}
irqreturn_t
dma_interrupt (int irq, void *dev_id)
{
_dma_channel_info *pCh;
int chan_no = 0;
int tmp;
pCh = (_dma_channel_info*)dev_id;
chan_no = (int)(pCh - dma_chan);
if (chan_no < 0 || chan_no > 19)
BUG();
tmp = readl(IFXMIPS_DMA_IRNEN);
writel(0, IFXMIPS_DMA_IRNEN);
g_ifxmips_dma_int_status |= 1 << chan_no;
writel(tmp, IFXMIPS_DMA_IRNEN);
mask_and_ack_ifxmips_irq(irq);
if (!g_ifxmips_dma_in_process)
{
g_ifxmips_dma_in_process = 1;
tasklet_schedule(&dma_tasklet);
}
return IRQ_HANDLED;
}
_dma_device_info*
dma_device_reserve (char *dev_name)
{
int i;
for (i = 0; i < MAX_DMA_DEVICE_NUM; i++)
{
if (strcmp(dev_name, dma_devs[i].device_name) == 0)
{
if (dma_devs[i].reserved)
return NULL;
dma_devs[i].reserved = 1;
break;
}
}
return &dma_devs[i];
}
void
dma_device_release (_dma_device_info *dev)
{
dev->reserved = 0;
}
void
dma_device_register(_dma_device_info *dev)
{
int i, j;
int chan_no = 0;
u8 *buffer;
int byte_offset;
int flag;
_dma_device_info *pDev;
_dma_channel_info *pCh;
struct rx_desc *rx_desc_p;
struct tx_desc *tx_desc_p;
for (i = 0; i < dev->max_tx_chan_num; i++)
{
pCh = dev->tx_chan[i];
if (pCh->control == IFXMIPS_DMA_CH_ON)
{
chan_no = (int)(pCh - dma_chan);
for (j = 0; j < pCh->desc_len; j++)
{
tx_desc_p = (struct tx_desc*)pCh->desc_base + j;
memset(tx_desc_p, 0, sizeof(struct tx_desc));
}
local_irq_save(flag);
writel(chan_no, IFXMIPS_DMA_CS);
/*check if the descriptor length is changed */
if (readl(IFXMIPS_DMA_CDLEN) != pCh->desc_len)
writel(pCh->desc_len, IFXMIPS_DMA_CDLEN);
writel(readl(IFXMIPS_DMA_CCTRL) & ~1, IFXMIPS_DMA_CCTRL);
writel(readl(IFXMIPS_DMA_CCTRL) | 2, IFXMIPS_DMA_CCTRL);
while (readl(IFXMIPS_DMA_CCTRL) & 2){};
writel(readl(IFXMIPS_DMA_IRNEN) | (1 << chan_no), IFXMIPS_DMA_IRNEN);
writel(0x30100, IFXMIPS_DMA_CCTRL); /*reset and enable channel,enable channel later */
local_irq_restore(flag);
}
}
for (i = 0; i < dev->max_rx_chan_num; i++)
{
pCh = dev->rx_chan[i];
if (pCh->control == IFXMIPS_DMA_CH_ON)
{
chan_no = (int)(pCh - dma_chan);
for (j = 0; j < pCh->desc_len; j++)
{
rx_desc_p = (struct rx_desc*)pCh->desc_base + j;
pDev = (_dma_device_info*)(pCh->dma_dev);
buffer = pDev->buffer_alloc(pCh->packet_size, &byte_offset, (void*)&(pCh->opt[j]));
if (!buffer)
break;
dma_cache_inv((unsigned long) buffer, pCh->packet_size);
rx_desc_p->Data_Pointer = (u32)CPHYSADDR((u32)buffer);
rx_desc_p->status.word = 0;
rx_desc_p->status.field.byte_offset = byte_offset;
rx_desc_p->status.field.OWN = DMA_OWN;
rx_desc_p->status.field.data_length = pCh->packet_size;
}
local_irq_save(flag);
writel(chan_no, IFXMIPS_DMA_CS);
/*check if the descriptor length is changed */
if (readl(IFXMIPS_DMA_CDLEN) != pCh->desc_len)
writel(pCh->desc_len, IFXMIPS_DMA_CDLEN);
writel(readl(IFXMIPS_DMA_CCTRL) & ~1, IFXMIPS_DMA_CCTRL);
writel(readl(IFXMIPS_DMA_CCTRL) | 2, IFXMIPS_DMA_CCTRL);
while (readl(IFXMIPS_DMA_CCTRL) & 2){};
writel(0x0a, IFXMIPS_DMA_CIE); /*fix me, should enable all the interrupts here? */
writel(readl(IFXMIPS_DMA_IRNEN) | (1 << chan_no), IFXMIPS_DMA_IRNEN);
writel(0x30000, IFXMIPS_DMA_CCTRL);
local_irq_restore(flag);
enable_ifxmips_irq(dma_chan[chan_no].irq);
}
}
}
void
dma_device_unregister (_dma_device_info *dev)
{
int i, j;
int chan_no;
_dma_channel_info *pCh;
struct rx_desc *rx_desc_p;
struct tx_desc *tx_desc_p;
int flag;
for (i = 0; i < dev->max_tx_chan_num; i++)
{
pCh = dev->tx_chan[i];
if (pCh->control == IFXMIPS_DMA_CH_ON)
{
chan_no = (int)(dev->tx_chan[i] - dma_chan);
local_irq_save (flag);
writel(chan_no, IFXMIPS_DMA_CS);
pCh->curr_desc = 0;
pCh->prev_desc = 0;
pCh->control = IFXMIPS_DMA_CH_OFF;
writel(0, IFXMIPS_DMA_CIE); /*fix me, should disable all the interrupts here? */
writel(readl(IFXMIPS_DMA_IRNEN) & ~(1 << chan_no), IFXMIPS_DMA_IRNEN); /*disable interrupts */
writel(readl(IFXMIPS_DMA_CCTRL) & ~1, IFXMIPS_DMA_CCTRL);
while (readl(IFXMIPS_DMA_CCTRL) & 1) {};
local_irq_restore (flag);
for (j = 0; j < pCh->desc_len; j++)
{
tx_desc_p = (struct tx_desc*)pCh->desc_base + j;
if ((tx_desc_p->status.field.OWN == CPU_OWN && tx_desc_p->status.field.C)
|| (tx_desc_p->status.field.OWN == DMA_OWN && tx_desc_p->status.field.data_length > 0))
{
dev->buffer_free ((u8 *) __va (tx_desc_p->Data_Pointer), (void*)pCh->opt[j]);
}
tx_desc_p->status.field.OWN = CPU_OWN;
memset (tx_desc_p, 0, sizeof (struct tx_desc));
}
//TODO should free buffer that is not transferred by dma
}
}
for (i = 0; i < dev->max_rx_chan_num; i++)
{
pCh = dev->rx_chan[i];
chan_no = (int)(dev->rx_chan[i] - dma_chan);
disable_ifxmips_irq(pCh->irq);
local_irq_save(flag);
g_ifxmips_dma_int_status &= ~(1 << chan_no);
pCh->curr_desc = 0;
pCh->prev_desc = 0;
pCh->control = IFXMIPS_DMA_CH_OFF;
writel(chan_no, IFXMIPS_DMA_CS);
writel(0, IFXMIPS_DMA_CIE); /*fix me, should disable all the interrupts here? */
writel(readl(IFXMIPS_DMA_IRNEN) & ~(1 << chan_no), IFXMIPS_DMA_IRNEN); /*disable interrupts */
writel(readl(IFXMIPS_DMA_CCTRL) & ~1, IFXMIPS_DMA_CCTRL);
while (readl(IFXMIPS_DMA_CCTRL) & 1) {};
local_irq_restore (flag);
for (j = 0; j < pCh->desc_len; j++)
{
rx_desc_p = (struct rx_desc *) pCh->desc_base + j;
if ((rx_desc_p->status.field.OWN == CPU_OWN
&& rx_desc_p->status.field.C)
|| (rx_desc_p->status.field.OWN == DMA_OWN
&& rx_desc_p->status.field.data_length > 0)) {
dev->buffer_free ((u8 *)
__va (rx_desc_p->
Data_Pointer),
(void *) pCh->opt[j]);
}
}
}
}
int
dma_device_read (struct dma_device_info *dma_dev, u8 ** dataptr, void **opt)
{
u8 *buf;
int len;
int byte_offset = 0;
void *p = NULL;
_dma_channel_info *pCh = dma_dev->rx_chan[dma_dev->current_rx_chan];
struct rx_desc *rx_desc_p;
/*get the rx data first */
rx_desc_p = (struct rx_desc *) pCh->desc_base + pCh->curr_desc;
if (!(rx_desc_p->status.field.OWN == CPU_OWN && rx_desc_p->status.field.C))
{
return 0;
}
buf = (u8 *) __va (rx_desc_p->Data_Pointer);
*(u32*)dataptr = (u32)buf;
len = rx_desc_p->status.field.data_length;
if (opt)
{
*(int*)opt = (int)pCh->opt[pCh->curr_desc];
}
/*replace with a new allocated buffer */
buf = dma_dev->buffer_alloc(pCh->packet_size, &byte_offset, &p);
if (buf)
{
dma_cache_inv ((unsigned long) buf,
pCh->packet_size);
pCh->opt[pCh->curr_desc] = p;
wmb ();
rx_desc_p->Data_Pointer = (u32) CPHYSADDR ((u32) buf);
rx_desc_p->status.word = (DMA_OWN << 31) | ((byte_offset) << 23) | pCh->packet_size;
wmb ();
} else {
*(u32 *) dataptr = 0;
if (opt)
*(int *) opt = 0;
len = 0;
}
/*increase the curr_desc pointer */
pCh->curr_desc++;
if (pCh->curr_desc == pCh->desc_len)
pCh->curr_desc = 0;
return len;
}
int
dma_device_write (struct dma_device_info *dma_dev, u8 * dataptr, int len, void *opt)
{
int flag;
u32 tmp, byte_offset;
_dma_channel_info *pCh;
int chan_no;
struct tx_desc *tx_desc_p;
local_irq_save (flag);
pCh = dma_dev->tx_chan[dma_dev->current_tx_chan];
chan_no = (int)(pCh - (_dma_channel_info *) dma_chan);
tx_desc_p = (struct tx_desc*)pCh->desc_base + pCh->prev_desc;
while (tx_desc_p->status.field.OWN == CPU_OWN && tx_desc_p->status.field.C)
{
dma_dev->buffer_free((u8 *) __va (tx_desc_p->Data_Pointer), pCh->opt[pCh->prev_desc]);
memset(tx_desc_p, 0, sizeof (struct tx_desc));
pCh->prev_desc = (pCh->prev_desc + 1) % (pCh->desc_len);
tx_desc_p = (struct tx_desc*)pCh->desc_base + pCh->prev_desc;
}
tx_desc_p = (struct tx_desc*)pCh->desc_base + pCh->curr_desc;
/*Check whether this descriptor is available */
if (tx_desc_p->status.field.OWN == DMA_OWN || tx_desc_p->status.field.C)
{
/*if not , the tell the upper layer device */
dma_dev->intr_handler (dma_dev, TX_BUF_FULL_INT);
local_irq_restore(flag);
printk (KERN_INFO "%s %d: failed to write!\n", __func__, __LINE__);
return 0;
}
pCh->opt[pCh->curr_desc] = opt;
/*byte offset----to adjust the starting address of the data buffer, should be multiple of the burst length. */
byte_offset = ((u32) CPHYSADDR ((u32) dataptr)) % ((dma_dev->tx_burst_len) * 4);
dma_cache_wback ((unsigned long) dataptr, len);
wmb ();
tx_desc_p->Data_Pointer = (u32) CPHYSADDR ((u32) dataptr) - byte_offset;
wmb ();
tx_desc_p->status.word = (DMA_OWN << 31) | DMA_DESC_SOP_SET | DMA_DESC_EOP_SET | ((byte_offset) << 23) | len;
wmb ();
pCh->curr_desc++;
if (pCh->curr_desc == pCh->desc_len)
pCh->curr_desc = 0;
/*Check whether this descriptor is available */
tx_desc_p = (struct tx_desc *) pCh->desc_base + pCh->curr_desc;
if (tx_desc_p->status.field.OWN == DMA_OWN)
{
/*if not , the tell the upper layer device */
dma_dev->intr_handler (dma_dev, TX_BUF_FULL_INT);
}
writel(chan_no, IFXMIPS_DMA_CS);
tmp = readl(IFXMIPS_DMA_CCTRL);
if (!(tmp & 1))
pCh->open (pCh);
local_irq_restore (flag);
return len;
}
int
map_dma_chan(_dma_chan_map *map)
{
int i, j;
int result;
for (i = 0; i < MAX_DMA_DEVICE_NUM; i++)
{
strcpy(dma_devs[i].device_name, global_device_name[i]);
}
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
{
dma_chan[i].irq = map[i].irq;
result = request_irq(dma_chan[i].irq, dma_interrupt, SA_INTERRUPT, "dma-core", (void*)&dma_chan[i]);
if (result)
{
printk("error, cannot get dma_irq!\n");
free_irq(dma_chan[i].irq, (void *) &dma_interrupt);
return -EFAULT;
}
}
for (i = 0; i < MAX_DMA_DEVICE_NUM; i++)
{
dma_devs[i].num_tx_chan = 0; /*set default tx channel number to be one */
dma_devs[i].num_rx_chan = 0; /*set default rx channel number to be one */
dma_devs[i].max_rx_chan_num = 0;
dma_devs[i].max_tx_chan_num = 0;
dma_devs[i].buffer_alloc = &common_buffer_alloc;
dma_devs[i].buffer_free = &common_buffer_free;
dma_devs[i].intr_handler = NULL;
dma_devs[i].tx_burst_len = 4;
dma_devs[i].rx_burst_len = 4;
if (i == 0)
{
writel(0, IFXMIPS_DMA_PS);
writel(readl(IFXMIPS_DMA_PCTRL) | ((0xf << 8) | (1 << 6)), IFXMIPS_DMA_PCTRL); /*enable dma drop */
}
if (i == 1)
{
writel(1, IFXMIPS_DMA_PS);
writel(0x14, IFXMIPS_DMA_PCTRL); /*deu port setting */
}
for (j = 0; j < MAX_DMA_CHANNEL_NUM; j++)
{
dma_chan[j].byte_offset = 0;
dma_chan[j].open = &open_chan;
dma_chan[j].close = &close_chan;
dma_chan[j].reset = &reset_chan;
dma_chan[j].enable_irq = &enable_ch_irq;
dma_chan[j].disable_irq = &disable_ch_irq;
dma_chan[j].rel_chan_no = map[j].rel_chan_no;
dma_chan[j].control = IFXMIPS_DMA_CH_OFF;
dma_chan[j].default_weight = IFXMIPS_DMA_CH_DEFAULT_WEIGHT;
dma_chan[j].weight = dma_chan[j].default_weight;
dma_chan[j].curr_desc = 0;
dma_chan[j].prev_desc = 0;
}
for (j = 0; j < MAX_DMA_CHANNEL_NUM; j++)
{
if (strcmp(dma_devs[i].device_name, map[j].dev_name) == 0)
{
if (map[j].dir == IFXMIPS_DMA_RX)
{
dma_chan[j].dir = IFXMIPS_DMA_RX;
dma_devs[i].max_rx_chan_num++;
dma_devs[i].rx_chan[dma_devs[i].max_rx_chan_num - 1] = &dma_chan[j];
dma_devs[i].rx_chan[dma_devs[i].max_rx_chan_num - 1]->pri = map[j].pri;
dma_chan[j].dma_dev = (void*)&dma_devs[i];
} else if(map[j].dir == IFXMIPS_DMA_TX)
{ /*TX direction */
dma_chan[j].dir = IFXMIPS_DMA_TX;
dma_devs[i].max_tx_chan_num++;
dma_devs[i].tx_chan[dma_devs[i].max_tx_chan_num - 1] = &dma_chan[j];
dma_devs[i].tx_chan[dma_devs[i].max_tx_chan_num - 1]->pri = map[j].pri;
dma_chan[j].dma_dev = (void*)&dma_devs[i];
} else {
printk ("WRONG DMA MAP!\n");
}
}
}
}
return 0;
}
void
dma_chip_init(void)
{
int i;
// enable DMA from PMU
ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_DMA);
// reset DMA
writel(readl(IFXMIPS_DMA_CTRL) | 1, IFXMIPS_DMA_CTRL);
// diable all interrupts
writel(0, IFXMIPS_DMA_IRNEN);
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
{
writel(i, IFXMIPS_DMA_CS);
writel(0x2, IFXMIPS_DMA_CCTRL);
writel(0x80000040, IFXMIPS_DMA_CPOLL);
writel(readl(IFXMIPS_DMA_CCTRL) & ~0x1, IFXMIPS_DMA_CCTRL);
}
}
int
ifxmips_dma_init (void)
{
int i;
dma_chip_init();
if (map_dma_chan(default_dma_map))
BUG();
g_desc_list = (u64*)KSEG1ADDR(__get_free_page(GFP_DMA));
if (g_desc_list == NULL)
{
printk("no memory for desriptor\n");
return -ENOMEM;
}
memset(g_desc_list, 0, PAGE_SIZE);
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
{
dma_chan[i].desc_base = (u32)g_desc_list + i * IFXMIPS_DMA_DESCRIPTOR_OFFSET * 8;
dma_chan[i].curr_desc = 0;
dma_chan[i].desc_len = IFXMIPS_DMA_DESCRIPTOR_OFFSET;
writel(i, IFXMIPS_DMA_CS);
writel((u32)CPHYSADDR(dma_chan[i].desc_base), IFXMIPS_DMA_CDBA);
writel(dma_chan[i].desc_len, IFXMIPS_DMA_CDLEN);
}
return 0;
}
arch_initcall(ifxmips_dma_init);
void
dma_cleanup(void)
{
int i;
free_page(KSEG0ADDR((unsigned long) g_desc_list));
for (i = 0; i < MAX_DMA_CHANNEL_NUM; i++)
free_irq(dma_chan[i].irq, (void*)&dma_interrupt);
}
EXPORT_SYMBOL (dma_device_reserve);
EXPORT_SYMBOL (dma_device_release);
EXPORT_SYMBOL (dma_device_register);
EXPORT_SYMBOL (dma_device_unregister);
EXPORT_SYMBOL (dma_device_read);
EXPORT_SYMBOL (dma_device_write);
MODULE_LICENSE ("GPL");

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target/linux/ifxmips/files/arch/mips/ifxmips/interrupt.c Normal file
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/*
* arch/mips/ifxmips/interrupt.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2005 Wu Qi Ming infineon
*
* Rewrite of Infineon IFXMips code, thanks to infineon for the support,
* software and hardware
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/module.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/irq_cpu.h>
void
disable_ifxmips_irq (unsigned int irq_nr)
{
int i;
u32 *ifxmips_ier = IFXMIPS_ICU_IM0_IER;
irq_nr -= INT_NUM_IRQ0;
for (i = 0; i <= 4; i++)
{
if (irq_nr < INT_NUM_IM_OFFSET){
writel(readl(ifxmips_ier) & ~(1 << irq_nr ), ifxmips_ier);
return;
}
ifxmips_ier += IFXMIPS_ICU_OFFSET;
irq_nr -= INT_NUM_IM_OFFSET;
}
}
EXPORT_SYMBOL (disable_ifxmips_irq);
void
mask_and_ack_ifxmips_irq (unsigned int irq_nr)
{
int i;
u32 *ifxmips_ier = IFXMIPS_ICU_IM0_IER;
u32 *ifxmips_isr = IFXMIPS_ICU_IM0_ISR;
irq_nr -= INT_NUM_IRQ0;
for (i = 0; i <= 4; i++)
{
if (irq_nr < INT_NUM_IM_OFFSET)
{
writel(readl(ifxmips_ier) & ~(1 << irq_nr ), ifxmips_ier);
writel((1 << irq_nr ), ifxmips_isr);
return;
}
ifxmips_ier += IFXMIPS_ICU_OFFSET;
ifxmips_isr += IFXMIPS_ICU_OFFSET;
irq_nr -= INT_NUM_IM_OFFSET;
}
}
EXPORT_SYMBOL (mask_and_ack_ifxmips_irq);
void
enable_ifxmips_irq (unsigned int irq_nr)
{
int i;
u32 *ifxmips_ier = IFXMIPS_ICU_IM0_IER;
irq_nr -= INT_NUM_IRQ0;
for (i = 0; i <= 4; i++)
{
if (irq_nr < INT_NUM_IM_OFFSET)
{
writel(readl(ifxmips_ier) | (1 << irq_nr ), ifxmips_ier);
return;
}
ifxmips_ier += IFXMIPS_ICU_OFFSET;
irq_nr -= INT_NUM_IM_OFFSET;
}
}
EXPORT_SYMBOL (enable_ifxmips_irq);
static unsigned int
startup_ifxmips_irq (unsigned int irq)
{
enable_ifxmips_irq (irq);
return 0;
}
static void
end_ifxmips_irq (unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
enable_ifxmips_irq (irq);
}
static struct hw_interrupt_type ifxmips_irq_type = {
"IFXMIPS",
.startup = startup_ifxmips_irq,
.enable = enable_ifxmips_irq,
.disable = disable_ifxmips_irq,
.unmask = enable_ifxmips_irq,
.ack = end_ifxmips_irq,
.mask = disable_ifxmips_irq,
.mask_ack = mask_and_ack_ifxmips_irq,
.end = end_ifxmips_irq,
};
static inline int
ls1bit32(unsigned long x)
{
__asm__ (
" .set push \n"
" .set mips32 \n"
" clz %0, %1 \n"
" .set pop \n"
: "=r" (x)
: "r" (x));
return 31 - x;
}
void
ifxmips_hw_irqdispatch (int module)
{
u32 irq;
irq = readl(IFXMIPS_ICU_IM0_IOSR + (module * IFXMIPS_ICU_OFFSET));
if (irq == 0)
return;
irq = ls1bit32 (irq);
do_IRQ ((int) irq + INT_NUM_IM0_IRL0 + (INT_NUM_IM_OFFSET * module));
if ((irq == 22) && (module == 0)){
writel(readl(IFXMIPS_EBU_PCC_ISTAT) | 0x10, IFXMIPS_EBU_PCC_ISTAT);
}
}
asmlinkage void
plat_irq_dispatch (void)
{
unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
unsigned int i;
if (pending & CAUSEF_IP7){
do_IRQ(MIPS_CPU_TIMER_IRQ);
goto out;
} else {
for (i = 0; i < 5; i++)
{
if (pending & (CAUSEF_IP2 << i))
{
ifxmips_hw_irqdispatch(i);
goto out;
}
}
}
printk("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status());
out:
return;
}
static struct irqaction cascade = {
.handler = no_action,
.flags = IRQF_DISABLED,
.name = "cascade",
};
void __init
arch_init_irq(void)
{
int i;
for (i = 0; i < 5; i++)
{
writel(0, IFXMIPS_ICU_IM0_IER + (i * IFXMIPS_ICU_OFFSET));
}
mips_cpu_irq_init();
for (i = 2; i <= 6; i++)
{
setup_irq(i, &cascade);
}
for (i = INT_NUM_IRQ0; i <= (INT_NUM_IRQ0 + (5 * INT_NUM_IM_OFFSET)); i++)
{
#if 0
irq_desc[i].status = IRQ_DISABLED;
irq_desc[i].action = NULL;
irq_desc[i].depth = 1;
#endif
set_irq_chip_and_handler(i, &ifxmips_irq_type, handle_level_irq);
}
set_c0_status (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
}

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#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/addrspace.h>
#include <linux/vmalloc.h>
#define IFXMIPS_PCI_MEM_BASE 0x18000000
#define IFXMIPS_PCI_MEM_SIZE 0x02000000
#define IFXMIPS_PCI_IO_BASE 0x1AE00000
#define IFXMIPS_PCI_IO_SIZE 0x00200000
#define IFXMIPS_PCI_CFG_BUSNUM_SHF 16
#define IFXMIPS_PCI_CFG_DEVNUM_SHF 11
#define IFXMIPS_PCI_CFG_FUNNUM_SHF 8
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
static int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
static int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
struct pci_ops ifxmips_pci_ops = {
.read = ifxmips_pci_read_config_dword,
.write = ifxmips_pci_write_config_dword
};
static struct resource pci_io_resource = {
.name = "io pci IO space",
.start = IFXMIPS_PCI_IO_BASE,
.end = IFXMIPS_PCI_IO_BASE + IFXMIPS_PCI_IO_SIZE - 1,
.flags = IORESOURCE_IO
};
static struct resource pci_mem_resource = {
.name = "ext pci memory space",
.start = IFXMIPS_PCI_MEM_BASE,
.end = IFXMIPS_PCI_MEM_BASE + IFXMIPS_PCI_MEM_SIZE - 1,
.flags = IORESOURCE_MEM
};
static struct pci_controller ifxmips_pci_controller = {
.pci_ops = &ifxmips_pci_ops,
.mem_resource = &pci_mem_resource,
.mem_offset = 0x00000000UL,
.io_resource = &pci_io_resource,
.io_offset = 0x00000000UL,
};
static u32 ifxmips_pci_mapped_cfg;
static int
ifxmips_pci_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, unsigned int where, u32 *data)
{
unsigned long cfg_base;
unsigned long flags;
u32 temp;
/* IFXMips support slot from 0 to 15 */
/* dev_fn 0&0x68 (AD29) is ifxmips itself */
if ((bus->number != 0) || ((devfn & 0xf8) > 0x78)
|| ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68))
return 1;
local_irq_save(flags);
cfg_base = ifxmips_pci_mapped_cfg;
cfg_base |= (bus->number << IFXMIPS_PCI_CFG_BUSNUM_SHF) | (devfn <<
IFXMIPS_PCI_CFG_FUNNUM_SHF) | (where & ~0x3);
/* Perform access */
if (access_type == PCI_ACCESS_WRITE)
{
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
writel(swab32(*data), ((u32*)cfg_base));
#else
writel(*data, ((u32*)cfg_base));
#endif
} else {
*data = readl(((u32*)(cfg_base)));
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
*data = swab32(*data);
#endif
}
wmb();
/* clean possible Master abort */
cfg_base = (ifxmips_pci_mapped_cfg | (0x0 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
temp = readl(((u32*)(cfg_base)));
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
temp = swab32 (temp);
#endif
cfg_base = (ifxmips_pci_mapped_cfg | (0x68 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
writel(temp, ((u32*)cfg_base));
local_irq_restore(flags);
if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ))
return 1;
return 0;
}
static int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 * val)
{
u32 data = 0;
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
*val = (data >> ((where & 3) << 3)) & 0xff;
else if (size == 2)
*val = (data >> ((where & 3) << 3)) & 0xffff;
else
*val = data;
return PCIBIOS_SUCCESSFUL;
}
static int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
u32 data = 0;
if (size == 4)
{
data = val;
} else {
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
data = (data & ~(0xff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
else if (size == 2)
data = (data & ~(0xffff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
}
if (ifxmips_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
}
int pcibios_plat_dev_init(struct pci_dev *dev){
u8 pin;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
switch(pin) {
case 0:
break;
case 1:
//falling edge level triggered:0x4, low level:0xc, rising edge:0x2
printk("%s:%s[%d] %08X \n", __FILE__, __func__, __LINE__, dev->irq);
writel(readl(IFXMIPS_EBU_PCC_CON) | 0xc, IFXMIPS_EBU_PCC_CON);
writel(readl(IFXMIPS_EBU_PCC_IEN) | 0x10, IFXMIPS_EBU_PCC_IEN);
break;
case 2:
case 3:
case 4:
printk ("WARNING: interrupt pin %d not supported yet!\n", pin);
default:
printk ("WARNING: invalid interrupt pin %d\n", pin);
return 1;
}
return 0;
}
static void __init ifxmips_pci_startup (void){
/*initialize the first PCI device--ifxmips itself */
u32 temp_buffer;
/*TODO: trigger reset */
writel(readl(IFXMIPS_CGU_IFCCR) & ~0xf00000, IFXMIPS_CGU_IFCCR);
writel(readl(IFXMIPS_CGU_IFCCR) | 0x800000, IFXMIPS_CGU_IFCCR);
/* PCIS of IF_CLK of CGU : 1 =>PCI Clock output
0 =>clock input
PADsel of PCI_CR of CGU : 1 =>From CGU
: 0 =>From pad
*/
writel(readl(IFXMIPS_CGU_IFCCR) | (1 << 16), IFXMIPS_CGU_IFCCR);
writel((1 << 31) | (1 << 30), IFXMIPS_CGU_PCICR);
/* prepare GPIO */
/* PCI_RST: P1.5 ALT 01 */
//pliu20060613: start
writel(readl(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
writel(readl(IFXMIPS_GPIO_P1_OD) | (1 << 5), IFXMIPS_GPIO_P1_OD);
writel(readl(IFXMIPS_GPIO_P1_DIR) | (1 << 5), IFXMIPS_GPIO_P1_DIR);
writel(readl(IFXMIPS_GPIO_P1_ALTSEL1) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL1);
writel(readl(IFXMIPS_GPIO_P1_ALTSEL0) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL0);
//pliu20060613: end
/* PCI_REQ1: P1.13 ALT 01 */
/* PCI_GNT1: P1.14 ALT 01 */
writel(readl(IFXMIPS_GPIO_P1_DIR) & ~0x2000, IFXMIPS_GPIO_P1_DIR);
writel(readl(IFXMIPS_GPIO_P1_DIR) | 0x4000, IFXMIPS_GPIO_P1_DIR);
writel(readl(IFXMIPS_GPIO_P1_ALTSEL1) & ~0x6000, IFXMIPS_GPIO_P1_ALTSEL1);
writel(readl(IFXMIPS_GPIO_P1_ALTSEL0) | 0x6000, IFXMIPS_GPIO_P1_ALTSEL0);
/* PCI_REQ2: P1.15 ALT 10 */
/* PCI_GNT2: P1.7 ALT 10 */
/* enable auto-switching between PCI and EBU */
writel(0xa, PCI_CR_CLK_CTRL);
/* busy, i.e. configuration is not done, PCI access has to be retried */
writel(readl(PCI_CR_PCI_MOD) & ~(1 << 24), PCI_CR_PCI_MOD);
wmb ();
/* BUS Master/IO/MEM access */
writel(readl(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD);
temp_buffer = readl(PCI_CR_PC_ARB);
/* enable external 2 PCI masters */
temp_buffer &= (~(0xf << 16));
/* enable internal arbiter */
temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
/* enable internal PCI master reqest */
temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS));
/* enable EBU reqest */
temp_buffer &= (~(3 << PCI_MASTER1_REQ_MASK_2BITS));
/* enable all external masters request */
temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS));
writel(temp_buffer, PCI_CR_PC_ARB);
wmb ();
/* FPI ==> PCI MEM address mapping */
/* base: 0xb8000000 == > 0x18000000 */
/* size: 8x4M = 32M */
writel(0x18000000, PCI_CR_FCI_ADDR_MAP0);
writel(0x18400000, PCI_CR_FCI_ADDR_MAP1);
writel(0x18800000, PCI_CR_FCI_ADDR_MAP2);
writel(0x18c00000, PCI_CR_FCI_ADDR_MAP3);
writel(0x19000000, PCI_CR_FCI_ADDR_MAP4);
writel(0x19400000, PCI_CR_FCI_ADDR_MAP5);
writel(0x19800000, PCI_CR_FCI_ADDR_MAP6);
writel(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
/* FPI ==> PCI IO address mapping */
/* base: 0xbAE00000 == > 0xbAE00000 */
/* size: 2M */
writel(0xbae00000, PCI_CR_FCI_ADDR_MAP11hg);
/* PCI ==> FPI address mapping */
/* base: 0x0 ==> 0x0 */
/* size: 32M */
/* BAR1 32M map to SDR address */
writel(0x0e000008, PCI_CR_BAR11MASK);
writel(0, PCI_CR_PCI_ADDR_MAP11);
writel(0, PCI_CS_BASE_ADDR1);
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
/* both TX and RX endian swap are enabled */
IFXMIPS_PCI_REG32 (PCI_CR_PCI_EOI_REG) |= 3;
wmb ();
#endif
/*TODO: disable BAR2 & BAR3 - why was this in the origianl infineon code */
writel(readl(PCI_CR_BAR12MASK) | 0x80000000, PCI_CR_BAR12MASK);
writel(readl(PCI_CR_BAR13MASK) | 0x80000000, PCI_CR_BAR13MASK);
/*use 8 dw burse length */
writel(0x303, PCI_CR_FCI_BURST_LENGTH);
writel(readl(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD);
wmb();
writel(readl(IFXMIPS_GPIO_P1_OUT) & ~(1 << 5), IFXMIPS_GPIO_P1_OUT);
wmb();
mdelay (1);
writel(readl(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
}
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin){
printk("\n\n\n%s:%s[%d] %d %d\n", __FILE__, __func__, __LINE__, slot, pin);
switch (slot) {
case 13:
/* IDSEL = AD29 --> USB Host Controller */
return (INT_NUM_IM1_IRL0 + 17);
case 14:
/* IDSEL = AD30 --> mini PCI connector */
//return (INT_NUM_IM1_IRL0 + 14);
return (INT_NUM_IM0_IRL0 + 22);
default:
printk("Warning: no IRQ found for PCI device in slot %d, pin %d\n", slot, pin);
return 0;
}
}
int pcibios_init(void){
extern int pci_probe_only;
pci_probe_only = 0;
printk ("PCI: Probing PCI hardware on host bus 0.\n");
ifxmips_pci_startup ();
// IFXMIPS_PCI_REG32(PCI_CR_CLK_CTRL_REG) &= (~8);
ifxmips_pci_mapped_cfg = ioremap_nocache(0x17000000, 0x800 * 16);
printk("IFXMips PCI mapped to 0x%08X\n", (unsigned long)ifxmips_pci_mapped_cfg);
ifxmips_pci_controller.io_map_base = (unsigned long)ioremap(IFXMIPS_PCI_IO_BASE, IFXMIPS_PCI_IO_SIZE - 1);
printk("IFXMips PCI I/O mapped to 0x%08X\n", (unsigned long)ifxmips_pci_controller.io_map_base);
register_pci_controller(&ifxmips_pci_controller);
return 0;
}
arch_initcall(pcibios_init);

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/*
* arch/mips/ifxmips/pmu.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <asm/ifxmips/ifxmips.h>
void
ifxmips_pmu_enable (unsigned int module)
{
int err = 1000000;
writel(readl(IFXMIPS_PMU_PWDCR) & ~module, IFXMIPS_PMU_PWDCR);
while (--err && (readl(IFXMIPS_PMU_PWDSR) & module)) {}
if (!err)
panic("activating PMU module failed!");
}
EXPORT_SYMBOL(ifxmips_pmu_enable);
void
ifxmips_pmu_disable (unsigned int module)
{
writel(readl(IFXMIPS_PMU_PWDCR) | module, IFXMIPS_PMU_PWDCR);
}
EXPORT_SYMBOL(ifxmips_pmu_disable);

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/*
* arch/mips/ifxmips/prom.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2005 Wu Qi Ming infineon
*
* Rewrite of Infineon IFXMips code, thanks to infineon for the support,
* software and hardware
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/init.h>
#include <linux/bootmem.h>
#include <asm/bootinfo.h>
#include <asm/ifxmips/ifxmips.h>
static char buf[1024];
void
prom_free_prom_memory (void)
{
}
const char *
get_system_type (void)
{
return BOARD_SYSTEM_TYPE;
}
void
prom_putchar (char c)
{
while ((readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF);
if (c == '\n')
writel('\r', IFXMIPS_ASC1_TBUF);
writel(c, IFXMIPS_ASC1_TBUF);
}
void
prom_printf (const char * fmt, ...)
{
va_list args;
int l;
char *p, *buf_end;
va_start(args, fmt);
l = vsprintf(buf, fmt, args);
va_end(args);
buf_end = buf + l;
for (p = buf; p < buf_end; p++)
{
prom_putchar(*p);
}
}
void __init
prom_init(void)
{
mips_machgroup = MACH_GROUP_IFXMIPS;
mips_machtype = MACH_INFINEON_IFXMIPS;
strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit");
add_memory_region (0x00000000, 0x2000000, BOOT_MEM_RAM);
}

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/*
* arch/mips/ifxmips/prom.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2005 infineon
*
* Rewrite of Infineon IFXMips code, thanks to infineon for the support,
* software and hardware
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/kernel.h>
#include <linux/pm.h>
#include <asm/reboot.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/ifxmips/ifxmips.h>
static void
ifxmips_machine_restart (char *command)
{
printk (KERN_NOTICE "System restart\n");
local_irq_disable ();
writel(readl(IFXMIPS_RCU_REQ) | IFXMIPS_RST_ALL, IFXMIPS_RCU_REQ);
for (;;);
}
static void
ifxmips_machine_halt (void)
{
printk (KERN_NOTICE "System halted.\n");
local_irq_disable ();
for (;;);
}
static void
ifxmips_machine_power_off (void)
{
printk (KERN_NOTICE "Please turn off the power now.\n");
local_irq_disable ();
for (;;);
}
void
ifxmips_reboot_setup (void)
{
_machine_restart = ifxmips_machine_restart;
_machine_halt = ifxmips_machine_halt;
pm_power_off = ifxmips_machine_power_off;
}

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/*
* arch/mips/ifxmips/setup.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2004 peng.liu@infineon.com
*
* Rewrite of Infineon IFXMips code, thanks to infineon for the support,
* software and hardware
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#include <linux/init.h>
#include <asm/time.h>
#include <asm/traps.h>
#include <asm/cpu.h>
#include <asm/irq.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/ifxmips/ifxmips_pmu.h>
static unsigned int r4k_offset; /* Amount to increment compare reg each time */
static unsigned int r4k_cur; /* What counter should be at next timer irq */
extern void ifxmips_reboot_setup (void);
void prom_printf (const char * fmt, ...);
void
__init bus_error_init (void)
{
/* nothing yet */
}
unsigned int
ifxmips_get_ddr_hz (void)
{
switch (readl(IFXMIPS_CGU_SYS) & 0x3)
{
case 0:
return CLOCK_167M;
case 1:
return CLOCK_133M;
case 2:
return CLOCK_111M;
}
return CLOCK_83M;
}
EXPORT_SYMBOL(ifxmips_get_ddr_hz);
unsigned int
ifxmips_get_cpu_hz (void)
{
unsigned int ddr_clock = ifxmips_get_ddr_hz();
switch (readl(IFXMIPS_CGU_SYS) & 0xc)
{
case 0:
return CLOCK_333M;
case 4:
return ddr_clock;
}
return ddr_clock << 1;
}
EXPORT_SYMBOL(ifxmips_get_cpu_hz);
unsigned int
ifxmips_get_fpi_hz (void)
{
unsigned int ddr_clock = ifxmips_get_ddr_hz();
if (readl(IFXMIPS_CGU_SYS) & 0x40)
{
return ddr_clock >> 1;
}
return ddr_clock;
}
EXPORT_SYMBOL(ifxmips_get_fpi_hz);
unsigned int
ifxmips_get_cpu_ver (void)
{
return readl(IFXMIPS_MCD_CHIPID) & 0xFFFFF000;
}
EXPORT_SYMBOL(ifxmips_get_cpu_ver);
void
ifxmips_time_init (void)
{
mips_hpt_frequency = ifxmips_get_cpu_hz() / 2;
r4k_offset = mips_hpt_frequency / HZ;
printk("mips_hpt_frequency:%d\n", mips_hpt_frequency);
printk("r4k_offset: %08x(%d)\n", r4k_offset, r4k_offset);
}
int
ifxmips_be_handler(struct pt_regs *regs, int is_fixup)
{
/*TODO*/
printk(KERN_ERR "TODO: BUS error\n");
return MIPS_BE_FATAL;
}
/* ISR GPTU Timer 6 for high resolution timer */
static irqreturn_t
ifxmips_timer6_interrupt(int irq, void *dev_id)
{
timer_interrupt(IFXMIPS_TIMER6_INT, NULL);
return IRQ_HANDLED;
}
static struct irqaction hrt_irqaction = {
.handler = ifxmips_timer6_interrupt,
.flags = IRQF_DISABLED,
.name = "hrt",
};
void __init
plat_timer_setup (struct irqaction *irq)
{
unsigned int retval;
setup_irq(MIPS_CPU_TIMER_IRQ, irq);
r4k_cur = (read_c0_count() + r4k_offset);
write_c0_compare(r4k_cur);
ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_GPT | IFXMIPS_PMU_PWDCR_FPI);
writel(0x100, IFXMIPS_GPTU_GPT_CLC);
writel(0xffff, IFXMIPS_GPTU_GPT_CAPREL);
writel(0x80C0, IFXMIPS_GPTU_GPT_T6CON);
retval = setup_irq(IFXMIPS_TIMER6_INT, &hrt_irqaction);
if (retval)
{
prom_printf("reqeust_irq failed %d. HIGH_RES_TIMER is diabled\n", IFXMIPS_TIMER6_INT);
}
}
void __init
plat_mem_setup (void)
{
u32 status;
prom_printf("This %s has a cpu rev of 0x%X\n", BOARD_SYSTEM_TYPE, ifxmips_get_cpu_ver());
//TODO WHY ???
/* clear RE bit*/
status = read_c0_status();
status &= (~(1<<25));
write_c0_status(status);
ifxmips_reboot_setup();
board_time_init = ifxmips_time_init;
board_be_handler = &ifxmips_be_handler;
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
}