+++ /dev/null
-# 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
-
+++ /dev/null
-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
+++ /dev/null
-#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");
+++ /dev/null
-/*
- * 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);
-}
+++ /dev/null
-#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);
+++ /dev/null
-/*
- * 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);
+++ /dev/null
-/*
- * 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);
-}
+++ /dev/null
-/*
- * 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;
-}
+++ /dev/null
-/*
- * 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;
-}
projects / openwrt / staging / florian.git / commitdiff