/*
*                                                                                      	
*                WCH Multi-I/O Board Device Driver                    
*                                                                                                                
*					 		
*	
*	Driver for WCH Multi-I/O Board device driver						
*	Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
*										
* 	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 
*
*   *Version 2.0.0.1
*   Support 3.6 kernel
*	
*   Version 2.0.0.0
*   Support 3.0 kernel
*
*   Version 1.0.0.4
*   Modify the WCH_BOARDS_MAX to 0x08 and WCH_SER_TOTAL_MAX to 0x100
*
*   Version 1.0.0.3
*   Modify ch365_32S hardware and ch438 chip select
*
*   Version 1.0.0.2
*   Support CH365_32S
*
*   Version 1.0.0.1
*	Change the program style
*   Support CH382_2S1P CH382_2S CH384_4S1P CH384_4S CH384_8S CH384_28S
*   Add dbg_serial function for debug
*   Modify the WCH_BOARDS_MAX to 2
*   Modify struct ser_port and add the chip_iobase for CH384_8S and CH384_28S
*   Modify struct pci_board and add intr_vector_offset_1 intr_vector_offset_2 and intr_vector_offset_3 for CH384_8S and CH384_28S
*
*   Version 1.0.0.0
*   Init Version	
*                                                    		Version: 2.0.0.0
*                                                           Date: 2012/12/28       	
*/
#include "wch_common.h"

MODULE_AUTHOR(WCH_DRIVER_AUTHOR);
MODULE_DESCRIPTION(WCH_DRIVER_DESC);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,18))
	MODULE_LICENSE("GPL");
#endif

extern struct wch_board wch_board_table[WCH_BOARDS_MAX];
extern struct wch_ser_port wch_ser_table[WCH_SER_TOTAL_MAX + 1];
extern unsigned char ch365_32s;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
	static struct pci_device_id wch_pci_board_id[] = {
		{VENDOR_ID_WCH_CH351, DEVICE_ID_WCH_CH351_2S, SUB_VENDOR_ID_WCH_CH351, SUB_DEVICE_ID_WCH_CH351_2S, 0, 0, WCH_BOARD_CH351_2S},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH352_2S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH352_2S, 0, 0, WCH_BOARD_CH352_2S},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH352_1S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH352_1S1P, 0, 0, WCH_BOARD_CH352_1S1P},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_4S, 0, 0, WCH_BOARD_CH353_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_2S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_2S1P, 0, 0, WCH_BOARD_CH353_2S1P},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_2S1PAR, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_2S1PAR, 0, 0, WCH_BOARD_CH353_2S1PAR},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH355_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH355_4S, 0, 0, WCH_BOARD_CH355_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_4S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_4S1P, 0, 0, WCH_BOARD_CH356_4S1P}, 
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_6S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_6S, 0, 0, WCH_BOARD_CH356_6S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_8S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_8S, 0, 0, WCH_BOARD_CH356_8S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH357_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH357_4S, 0, 0, WCH_BOARD_CH357_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH358_4S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH358_4S1P, 0, 0, WCH_BOARD_CH358_4S1P},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH358_8S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH358_8S, 0, 0, WCH_BOARD_CH358_8S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH359_16S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH359_16S, 0, 0, WCH_BOARD_CH359_16S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH382_2S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH382_2S, 0, 0, WCH_BOARD_CH382_2S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH382_2S1P, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH382_2S1P, 0, 0, WCH_BOARD_CH382_2S1P},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_4S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_4S, 0, 0, WCH_BOARD_CH384_4S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_4S1P, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_4S1P, 0, 0, WCH_BOARD_CH384_4S1P},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_8S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_8S, 0, 0, WCH_BOARD_CH384_8S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_28S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_28S, 0, 0, WCH_BOARD_CH384_28S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH365_32S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH365_32S, 0, 0, WCH_BOARD_CH365_32S},
		{0}
	};
	MODULE_DEVICE_TABLE(pci, wch_pci_board_id);
#else
	struct wch_pci_info {
		unsigned short vendor;
		unsigned short device;
		unsigned short subvendor;
		unsigned short subdevice;
		unsigned short driver_data;
	};

	static struct wch_pci_info wch_pci_board_id[] = {
		{VENDOR_ID_WCH_CH351, DEVICE_ID_WCH_CH351_2S, SUB_VENDOR_ID_WCH_CH351, SUB_DEVICE_ID_WCH_CH351_2S, WCH_BOARD_CH351_2S},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH352_2S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH352_2S, WCH_BOARD_CH352_2S},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH352_1S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH352_1S1P, WCH_BOARD_CH352_1S1P},	
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_4S, WCH_BOARD_CH353_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_2S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_2S1P, WCH_BOARD_CH353_2S1P},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH353_2S1PAR, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH353_2S1PAR, WCH_BOARD_CH353_2S1PAR},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH355_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH355_4S, WCH_BOARD_CH355_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_4S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_4S1P, WCH_BOARD_CH356_4S1P}, 
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_6S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_6S, WCH_BOARD_CH356_6S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH356_8S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH356_8S, WCH_BOARD_CH356_8S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH357_4S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH357_4S, WCH_BOARD_CH357_4S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH358_4S1P, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH358_4S1P, WCH_BOARD_CH358_4S1P},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH358_8S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH358_8S, WCH_BOARD_CH358_8S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH359_16S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH359_16S, WCH_BOARD_CH359_16S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH382_2S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH382_2S, WCH_BOARD_CH382_2S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH382_2S1P, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH382_2S1P, WCH_BOARD_CH382_2S1P},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_4S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_4S, WCH_BOARD_CH384_4S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_4S1P, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_4S1P, WCH_BOARD_CH384_4S1P},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_8S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_8S, WCH_BOARD_CH384_8S},
		{VENDOR_ID_WCH_PCIE, DEVICE_ID_WCH_CH384_28S, SUB_VENDOR_ID_WCH_PCIE, SUB_DEVICE_ID_WCH_CH384_28S, WCH_BOARD_CH384_28S},
		{VENDOR_ID_WCH_PCI, DEVICE_ID_WCH_CH365_32S, SUB_VENDOR_ID_WCH_PCI, SUB_DEVICE_ID_WCH_CH365_32S, WCH_BOARD_CH365_32S},
		{0}
	};
#endif

struct wch_board wch_board_table[WCH_BOARDS_MAX];
struct wch_ser_port wch_ser_table[WCH_SER_TOTAL_MAX + 1];

static int wch_ser_port_total_cnt; // 总串口数
unsigned char ch365_32s = 0;

#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
	static
	irqreturn_t
	wch_interrupt(
		int irq,
		void *dev_id
		)
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
	static
	irqreturn_t
	wch_interrupt(
		int irq,
		void *dev_id,
		struct pt_regs *regs
		)
#else
	static
	void
	wch_interrupt(
		int irq,
		void *dev_id,
		struct pt_regs *regs
		)
#endif
{
    struct wch_ser_port *sp = NULL;
    struct wch_board *sb = NULL;
    int i;
    int status = 0;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
    int handled = IRQ_NONE;
#endif

    for (i = 0; i < WCH_BOARDS_MAX; i++)
    {
        if (dev_id == &(wch_board_table[i]))
        {
            sb = dev_id;
            break;
        }
    }
	
    if (i == WCH_BOARDS_MAX)
    {
        status = 1;
    }
    
    if (!sb)
    {
		status = 1;
    }
    
    if (sb->board_enum <= 0)
    {
		status = 1;
    }
	
    if (status != 0)
    {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
        return handled;
#else
        return;
#endif 
    }
	
	if ((sb->ser_ports > 0) && (sb->ser_isr != NULL))
	{
		sp = &wch_ser_table[sb->ser_port_index];
		
		if (!sp)
		{
			status = 1;
		}
		
		status = sb->ser_isr(sb, sp);
	}

    if (status != 0)
    {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
        return handled;
#else
        return;
#endif
    }

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
	handled = IRQ_HANDLED;
    return handled;
#endif
}


static
int 
wch_pci_board_probe(
	void
	)
{
    struct wch_board *sb;
    struct pci_dev *pdev = NULL;
    struct pci_dev *pdev_array[4] = {NULL, NULL, NULL, NULL};
	
	int wch_pci_board_id_cnt;
    int table_cnt;
    int board_cnt;
    int i;
	unsigned short int sub_device_id;
    int status;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

	// clear and init some variable
    memset(wch_board_table, 0, WCH_BOARDS_MAX * sizeof(struct wch_board));
	
    for (i = 0; i < WCH_BOARDS_MAX; i++)
    {
        wch_board_table[i].board_enum = -1;
        wch_board_table[i].board_number = -1;
    }
	
	wch_pci_board_id_cnt = (sizeof(wch_pci_board_id) / sizeof(wch_pci_board_id[0])) - 1;

	// search wch serial and multi-I/O board
	pdev = NULL;
	table_cnt = 0;
	board_cnt = 0;
	status = 0;
	
    while (table_cnt < wch_pci_board_id_cnt)
    {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
		pdev = pci_get_device(wch_pci_board_id[table_cnt].vendor, wch_pci_board_id[table_cnt].device, pdev);
#else
        pdev = pci_find_device(wch_pci_board_id[table_cnt].vendor, wch_pci_board_id[table_cnt].device, pdev);
#endif
        if (pdev == NULL) 
        {
           	table_cnt++;
           	continue;
		}
        if ((table_cnt > 0) && ((pdev == pdev_array[0]) || (pdev == pdev_array[1]) || (pdev == pdev_array[2]) || (pdev == pdev_array[3])))
        {
            continue;
        }
 		
		if (wch_pci_board_id[table_cnt].driver_data == WCH_BOARD_CH365_32S)
		{
			ch365_32s = 0x01;
		}
        
		pci_read_config_word(pdev, 0x2e, &sub_device_id);

		if (ch365_32s)
		{

		}
		else
		{
			if (sub_device_id == 0)
			{
				printk("WCH Error: WCH Board (bus:%d device:%d), in configuration space,\n", pdev->bus->number, PCI_SLOT(pdev->devfn));
				printk("           subdevice id isn't vaild.\n\n");
				status = -EIO;
				return status;
			}

			if (sub_device_id != wch_pci_board_id[table_cnt].subdevice)
			{
				continue;
			}
		}
		
        if (pdev == NULL)
        {
            printk("WCH Error: PCI device object is an NULL pointer !\n\n");
            status = -EIO;
            return status; 
        }
        else
        {
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,4,3))
            pci_disable_device(pdev);
#endif
            status = pci_enable_device(pdev);
            
            if (status != 0)
            { 
                printk("WCH Error: WCH Board Enable Fail !\n\n");
                status = -ENXIO;
                return status;
            }
        }
		
        board_cnt++;
        if (board_cnt > WCH_BOARDS_MAX) 
        {
            printk("\n");
            printk("WCH Error: WCH Driver Module Support Four Boards In Maximum !\n\n");
            status = -ENOSPC;
            return status;
        }
		
        sb = &wch_board_table[board_cnt - 1];
        
        pdev_array[board_cnt - 1] = pdev;
        sb->pdev = pdev;
        sb->bus_number = pdev->bus->number;
        sb->dev_number = PCI_SLOT(pdev->devfn);
		
        sb->board_enum = (int)wch_pci_board_id[table_cnt].driver_data;
        sb->pb_info = wch_pci_board_conf[sb->board_enum];
        
		sb->board_flag = sb->pb_info.board_flag;
		
        sb->board_number = board_cnt - 1;
    }
	
	// print info
    if (board_cnt == 0)
    {
        printk("WCH Info : No WCH Multi-I/O Board Found !\n\n");
        status = -ENXIO;
        return status;
    }
	else
	{
		for (i = 0; i < WCH_BOARDS_MAX; i++)
		{
			sb = &wch_board_table[i];
			if (sb->board_enum > 0)
			{
				printk("\n");
				if ((sb->pb_info.num_serport) > 0)
				{
					printk("WCH Info : Found WCH %s Series Board (%dS),\n", sb->pb_info.board_name, sb->pb_info.num_serport); 
				}
				
				printk("           bus number:%d, device number:%d\n\n", sb->bus_number, sb->dev_number);
			}
		}
	}
	
    return status;
}

static
int 
wch_get_pci_board_conf(
	void
	)
{
    struct wch_board *sb = NULL;
    struct pci_dev *pdev = NULL;
    int status = 0;
    int i;
    int j;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

    for (i = 0; i < WCH_BOARDS_MAX; i++)
    {
        sb = &wch_board_table[i];
        
        if (sb->board_enum > 0)
        {
			pdev = sb->pdev;
			sb->ser_ports = sb->pb_info.num_serport;
			
			wch_ser_port_total_cnt = wch_ser_port_total_cnt + sb->ser_ports;
			

			if (wch_ser_port_total_cnt > WCH_SER_TOTAL_MAX)
			{
				printk("WCH Error: Too much serial port, maximum %d ports can be supported !\n\n", WCH_SER_TOTAL_MAX);
				status = -EIO;
				return status;
			}
			
			
			for (j = 0; j < WCH_PCICFG_BAR_TOTAL; j++)
			{
				sb->bar_addr[j] = pci_resource_start(pdev, j);
			}
			
			if((sb->board_flag & BOARDFLAG_CH365_32_PORTS) == BOARDFLAG_CH365_32_PORTS)
			{
				sb->board_membase = ioremap(sb->bar_addr[1], 4096);
				if (!sb->board_membase)
				{
					status = -EIO;
					printk("WCH Error: ioremap failed !\n");
					return status;
				}
			}

			sb->irq = sb->pdev->irq;
			if (sb->irq <= 0)
			{
				printk("WCH Error: WCH Board %s Series (bus:%d device:%d), in configuartion space, irq isn't valid !\n\n",
					sb->pb_info.board_name,
					sb->bus_number,
					sb->dev_number
					);
				
				status = -EIO;
				return status;
			}
        }
    }
	
    return status;
}

static
int 
wch_assign_resource(
	void
	)
{
	struct wch_board *sb = NULL;
	struct wch_ser_port *sp = NULL;
    int status = 0;
	int i;
	int j;
	int ser_n;
	int ser_port_index = 0;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

	memset(wch_ser_table, 0, (WCH_SER_TOTAL_MAX + 1) * sizeof(struct wch_ser_port));
	
	for (i = 0; i < WCH_BOARDS_MAX; i++)
	{
		sb = &wch_board_table[i];
		
		if (sb->board_enum > 0)
		{
			if (sb->ser_ports > 0)
			{
				sb->vector_mask = 0;
				
				// assign serial port resource
				ser_n = sb->ser_port_index = ser_port_index;
				
				sp = &wch_ser_table[ser_n];
				
				if (sp == NULL)
				{
					status = -ENXIO;
					printk("WCH Error: Serial port table address error !\n");
					return status;
				}

				for (j = 0; j < sb->ser_ports; j++, ser_n++, sp++)
				{				
					sp->port.chip_flag = sb->pb_info.port[j].chip_flag;
					sp->port.iobase = sb->bar_addr[sb->pb_info.port[j].bar1] + sb->pb_info.port[j].offset1;
					if ((sb->board_flag & BOARDFLAG_REMAP) == BOARDFLAG_REMAP)
					{
						sp->port.vector = 0;
					}
					else if((sb->board_flag & BOARDFLAG_CH384_8_PORTS) == BOARDFLAG_CH384_8_PORTS)
					{
						sp->port.chip_iobase = sb->bar_addr[sb->pb_info.port[j].bar1];
						sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset;
					}
					else if((sb->board_flag & BOARDFLAG_CH384_28_PORTS) == BOARDFLAG_CH384_28_PORTS)
					{
						sp->port.chip_iobase = sb->bar_addr[sb->pb_info.port[j].bar1];
						if (j >= 0 && j < 0x04)
						{
							sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset;
						}
						else if (j >= 0x04 && j < 0x0C)
						{
							sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset_1;
						}
						else if (j >= 0x0C && j < 0x14)
						{
							sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset_2;
						}
						else if (j >= 0x14 && j < 0x1C)
						{
							sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset_3;
						}
						else
						{
							
						}
					}
					else if((sb->board_flag & BOARDFLAG_CH365_32_PORTS) == BOARDFLAG_CH365_32_PORTS)
					{
						sp->port.chip_iobase = sb->bar_addr[sb->pb_info.port[j].bar1];
						sp->port.board_membase = sb->board_membase;
						if (j >= 0 && j < 0x08)
						{
							if(j >=0 && j < 0x04)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + j * 0x10;
							}
							if(j >=4 && j < 0x08)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x08 + (j - 4) * 0x10;		
							}
						}
						if (j >= 0x08 && j < 0x10)
						{
							if(j >=0x08 && j < 0x0C)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x80 + (j - 0x08) * 0x10;
							}
							if(j >=0x0C && j < 0x10)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x80 + 0x08 + (j - 0x0C) * 0x10;
							}
						}
						if (j >= 0x10 && j < 0x18)
						{
							if(j >=0x10 && j < 0x14)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x100 + (j - 0x10) * 0x10;
							}
							if(j >=0x14 && j < 0x18)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x100 + 0x08 + (j - 0x14) * 0x10;
							}
						}
						if (j >= 0x18 && j < 0x20)
						{
							if(j >=0x18 && j < 0x1C)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x180 + (j - 0x18) * 0x10;
							}
							if(j >=0x1C && j < 0x20)
							{
								sp->port.port_membase = sb->board_membase + 0x100 + 0x180 + 0x08 + (j - 0x1C) * 0x10;		
							}
						}
					}
					else
					{
						sp->port.vector = sb->bar_addr[sb->pb_info.intr_vector_bar] + sb->pb_info.intr_vector_offset;
					}
				}
				sb->vector_mask = 0xffffffff;
				ser_port_index = ser_port_index + sb->ser_ports;
			}
		}
	}	
	
	return status;
}

static
int 
wch_ser_port_table_init(
	void
	)
{
	struct wch_board *sb = NULL;
	struct wch_ser_port *sp = NULL;
    int status = 0;
	int i;
	int j;
	int n;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

	for (i = 0; i < WCH_BOARDS_MAX; i++)
	{
		sb = &wch_board_table[i];
		
		if (sb == NULL)
		{
			status = -ENXIO;
			printk("WCH Error: Board table pointer error !\n");
			return status;
		}	
		
		if ((sb->board_enum > 0) && (sb->ser_ports > 0))
		{
			n = sb->ser_port_index;
			sp = &wch_ser_table[n];
			
			if (sp == NULL)
			{
				status = -ENXIO;
				printk("WCH Error: Serial port table pointer error !\n");
				return status;
			}
			
			for (j = 0; j < sb->ser_ports; j++, n++, sp++) 
			{
				sp->port.board_enum = sb->board_enum;
				sp->port.bus_number = sb->bus_number;
				sp->port.dev_number = sb->dev_number;
				sp->port.baud_base = 115200;		
				sp->port.pb_info = sb->pb_info;
				
				sp->port.irq = sb->irq;
				sp->port.line = n;
				sp->port.uartclk = sp->port.baud_base * 16;
				if (ch365_32s)
				{
					sp->port.iotype = WCH_UPIO_MEM; // MEM访问
				}
				else
				{
					sp->port.iotype = WCH_UPIO_PORT; // IO访问
				}

				sp->port.flags = ASYNC_SHARE_IRQ;
				
				sp->port.ldisc_stop_rx = 0;
				spin_lock_init(&sp->port.lock);


				if(sp->port.chip_flag == WCH_BOARD_CH351_2S)
				{
					sp->port.type = PORT_SER_16550A;
					sp->port.fifosize = CH351_FIFOSIZE_SET;
					sp->port.rx_trigger = CH351_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH352_2S || sp->port.chip_flag == WCH_BOARD_CH352_1S1P) 
				{
					sp->port.type = PORT_SER_16550A;
					sp->port.fifosize = CH352_FIFOSIZE_SET;
					sp->port.rx_trigger = CH352_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH353_4S || sp->port.chip_flag == WCH_BOARD_CH353_2S1P || sp->port.chip_flag == WCH_BOARD_CH353_2S1PAR)
				{
					sp->port.type = PORT_SER_16550A;
					sp->port.fifosize = CH353_FIFOSIZE_SET;
					sp->port.rx_trigger = CH353_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH355_4S) 
				{
					sp->port.type = PORT_SER_16550A;
					sp->port.fifosize = CH355_FIFOSIZE_SET;
					sp->port.rx_trigger = CH355_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH356_4S1P || sp->port.chip_flag == WCH_BOARD_CH356_6S || sp->port.chip_flag == WCH_BOARD_CH356_8S) 
				{
					sp->port.type = PORT_SER_16550A;
					sp->port.fifosize = CH356_FIFOSIZE_SET;
					sp->port.rx_trigger = CH356_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH357_4S)
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH357_FIFOSIZE_SET;
					sp->port.rx_trigger = CH357_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH358_4S1P || sp->port.chip_flag == WCH_BOARD_CH358_8S) 
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH358_FIFOSIZE_SET;
					sp->port.rx_trigger = CH358_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH359_16S) 
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH359_FIFOSIZE_SET;
					sp->port.rx_trigger = CH359_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH382_2S || sp->port.chip_flag == WCH_BOARD_CH382_2S1P)
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH382_FIFOSIZE_SET;
					sp->port.rx_trigger = CH382_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH384_4S || sp->port.chip_flag == WCH_BOARD_CH384_4S1P)
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH384_FIFOSIZE_SET;
					sp->port.rx_trigger = CH384_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH384_8S)
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH358_FIFOSIZE_SET;
					sp->port.rx_trigger = CH358_TRIGGER_LEVEL_SET;
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH384_28S)
				{
					sp->port.type = PORT_SER_16750;
					if(j >= 0 && j < 0x04)
					{
						sp->port.fifosize = CH384_FIFOSIZE_SET;
						sp->port.rx_trigger = CH384_TRIGGER_LEVEL_SET;
					}
					else
					{
						sp->port.fifosize = CH358_FIFOSIZE_SET;
						sp->port.rx_trigger = CH358_TRIGGER_LEVEL_SET;
					}
				}
				else if (sp->port.chip_flag == WCH_BOARD_CH365_32S)
				{
					sp->port.type = PORT_SER_16750;
					sp->port.fifosize = CH438_FIFOSIZE_SET;
					sp->port.rx_trigger = CH438_TRIGGER_LEVEL_SET;
				}
				else
				{
					sp->port.type = PORT_SER_16450;
					sp->port.fifosize = DEFAULT_FIFOSIZE;
					sp->port.rx_trigger = DEFAULT_TRIGGER_LEVEL;
				}
				
				
				if ((sb->pb_info.board_flag & BOARDFLAG_REMAP) == BOARDFLAG_REMAP)
				{
					sp->port.vector_mask = 0;
					sp->port.port_flag = PORTFLAG_REMAP;
				}
				else
				{
					sp->port.vector_mask = sb->vector_mask;
					sp->port.port_flag = PORTFLAG_NONE;
				}
				
				sp->port.setserial_flag = WCH_SER_BAUD_NOTSETSER;
			}		
			
			sb->ser_isr = wch_ser_interrupt;
		}
		else
		{
			sb->ser_isr = NULL;
		}		
	}
	
    return status;
}

#if WCH_DBG
void 
wch_debug(
	void
	) // 调试
{
#if WCH_DBG_BOARD
	struct wch_board *sb = NULL;
	int i;
#endif

#if WCH_DBG_SERPORT	
	struct wch_ser_port *sp = NULL;
	int j;
#endif
	
#if WCH_DBG_BOARD
	printk("\n");
	printk("======== board info ========\n");
	for (i = 0; i < WCH_BOARDS_MAX; i++)
	{
		sb = &wch_board_table[i];
		if (sb->board_enum != -1)
		{
			printk(" name         : %s\n", sb->pb_info.board_name);
			printk(" board_enum   : %d\n", sb->board_enum);
			printk(" board_number : %d\n", sb->board_number);
			printk(" irq          : %d\n", sb->irq);
			printk(" vector_mask  : 0x%x\n", sb->vector_mask);
			printk(" bar[0]       : 0x%x\n", sb->bar_addr[0]);
			printk(" bar[1]       : 0x%x\n", sb->bar_addr[1]);
			printk(" bar[2]       : 0x%x\n", sb->bar_addr[2]);
			printk(" bar[3]       : 0x%x\n", sb->bar_addr[3]);			
			printk(" bar[4]       : 0x%x\n", sb->bar_addr[4]);
			printk(" bar[5]       : 0x%x\n", sb->bar_addr[5]);					 
			printk("----------------------------\n");
		}
	}
	printk("============================\n");
	printk("\n");
#endif	
	
	
#if WCH_DBG_SERPORT	
	printk("\n");
	printk("======== serial info ========\n");
	for (j = 0; j < WCH_SER_TOTAL_MAX; j++)
	{
		sp = &wch_ser_table[j];
		if (sp->port.iobase)
		{
			printk(" number       : %d\n", j);
			printk(" name         : %s\n", sp->port.pb_info.board_name);
			printk(" iobase       : 0x%x\n", sp->port.iobase);
			printk(" chip_iobase  : 0x%x\n", sp->port.chip_iobase);
			printk(" irq          : %d\n", sp->port.irq);
			printk(" vector       : 0x%x\n", sp->port.vector);
			printk(" vector_mask  : 0x%x\n", sp->port.vector_mask);
			printk(" chip_flag    : 0x%x\n", sp->port.chip_flag);
			printk(" port_flag    : 0x%x\n", sp->port.port_flag);
			printk("----------------------------\n");
		}
	}
	printk("============================\n");
	printk("\n");
#endif

}
#endif


#if WCH_DBG_SERIAL
void
ch365_32s_test(
	void
	)
{
	struct wch_board *sb = NULL;
	int i;
	dbg_serial("\n");
	dbg_serial("======== board info ========\n");
	for (i = 0; i < WCH_BOARDS_MAX; i++)
	{
		sb = &wch_board_table[i];
		if (sb->board_enum != -1)
		{
			dbg_serial(" ch438_1_uart0 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05));
			dbg_serial(" ch438_1_uart1 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x08));
			dbg_serial(" ch438_1_uart2 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x10));
			dbg_serial(" ch438_1_uart3 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x18));
			dbg_serial(" ch438_1_uart4 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x20));
			dbg_serial(" ch438_1_uart5 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x28));
			dbg_serial(" ch438_1_uart6 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x30));
			dbg_serial(" ch438_1_uart7 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x38));
			dbg_serial("----------------------------\n");
			dbg_serial(" ch438_2_uart0 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x80));
			dbg_serial(" ch438_2_uart1 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x08 + 0x80));
			dbg_serial(" ch438_2_uart2 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x10 + 0x80));
			dbg_serial(" ch438_2_uart3 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x18 + 0x80));
			dbg_serial(" ch438_2_uart4 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x20 + 0x80));
			dbg_serial(" ch438_2_uart5 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x28 + 0x80));
			dbg_serial(" ch438_2_uart6 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x30 + 0x80));
			dbg_serial(" ch438_2_uart7 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x38 + 0x80));
			dbg_serial("----------------------------\n");
			dbg_serial(" ch438_3_uart0 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x100));
			dbg_serial(" ch438_3_uart1 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x08 + 0x100));
			dbg_serial(" ch438_3_uart2 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x10 + 0x100));
			dbg_serial(" ch438_3_uart3 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x18 + 0x100));
			dbg_serial(" ch438_3_uart4 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x20 + 0x100));
			dbg_serial(" ch438_3_uart5 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x28 + 0x100));
			dbg_serial(" ch438_3_uart6 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x30 + 0x100));
			dbg_serial(" ch438_3_uart7 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x38 + 0x100));
			dbg_serial("----------------------------\n");
			dbg_serial(" ch438_4_uart0 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x180));
			dbg_serial(" ch438_4_uart1 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x08 + 0x180));
			dbg_serial(" ch438_4_uart2 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x10 + 0x180));
			dbg_serial(" ch438_4_uart3 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x18 + 0x180));
			dbg_serial(" ch438_4_uart4 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x20 + 0x180));
			dbg_serial(" ch438_4_uart5 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x28 + 0x180));
			dbg_serial(" ch438_4_uart6 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x30 + 0x180));
			dbg_serial(" ch438_4_uart7 LSR = %x\n", readb(sb->board_membase + 0x100 + 0x05 + 0x38 + 0x180));
			dbg_serial("----------------------------\n");
		}
	}
	dbg_serial("============================\n");
	dbg_serial("\n");
}
#endif

int 
wch_register_irq(
	void
	) // 请求中断
{
	struct wch_board *sb = NULL;
	int status = 0;
	int i;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

	for (i = 0; i < WCH_BOARDS_MAX; i++)
	{
		sb = &wch_board_table[i];
		
		if (sb == NULL)
		{
			status = -ENXIO;
			printk("WCH Error: Board table pointer error !\n");
			return status;
		}			
		
		if (sb->board_enum > 0)
		{
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
			status = request_irq(sb->irq, wch_interrupt, IRQF_SHARED, "wch", sb);
#else
            status = request_irq(sb->irq, wch_interrupt, SA_SHIRQ, "wch", sb);
#endif	
			
			if (status) 
			{
				printk("WCH Error: WCH Multi-I/O %s Board(bus:%d device:%d), request\n", sb->pb_info.board_name, sb->bus_number, sb->dev_number);	 			
				printk("           IRQ %d fail, IRQ %d may be conflit with another device.\n", sb->irq, sb->irq);
				return status;
			}		
			
		}
		if (ch365_32s)
		{
			outb(inb(sb->bar_addr[0] + 0xF8) & 0xFE, sb->bar_addr[0] + 0xF8);
			outb(((inb(sb->bar_addr[0] + 0xFA) & 0xFB) | 0x03), sb->bar_addr[0] + 0xFA); // set read/write plus width 240ns->120ns
		}
	}

	return status;
}

void
wch_iounmap(
	void
	) // 释放IO
{
	struct wch_board *sb = NULL;
    int i;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

    for (i = 0; i < WCH_BOARDS_MAX; i++)
    {
        sb = &wch_board_table[i];
        
        if (sb->board_enum > 0)
        {
			iounmap(sb->board_membase);
        }
    }
}


void 
wch_release_irq(
	void
	) // 释放中断
{
	struct wch_board *sb = NULL;
    int i;

#if WCH_DBG
	printk("%s : %s\n", __FILE__, __FUNCTION__);
#endif

    for (i = 0; i < WCH_BOARDS_MAX; i++)
    {
        sb = &wch_board_table[i];
        
        if (sb->board_enum > 0)
        {
            free_irq(sb->irq, sb);
        }
		if (ch365_32s)
		{
			outb(inb(sb->bar_addr[0] + 0xF8) | 0x01, sb->bar_addr[0] + 0xF8);
		}
    }
}

static struct ser_driver wch_ser_reg = {
    .dev_name = "ttyWCH",
	.major = WCH_TTY_MAJOR,
	.minor = 0,
	.nr = WCH_SER_TOTAL_MAX + 1,
};

static
int
__init 
wch_init(
	void
	) // 加载模块
{
	int status = 0;
	
	printk("\n\n");
	printk("=====================  WCH Device Driver Module Install  =====================\n");
	printk("\n");
	printk("WCH Info : Loading WCH Multi-I/O Board Driver Module\n");
	printk("                                                       -- Date : %s\n", WCH_DRIVER_DATE);
	printk("                                                       -- Version : %s\n\n", WCH_DRIVER_VERSION);
	
	wch_ser_port_total_cnt = 0;
	
	status = wch_pci_board_probe(); // 探测WCH系列多功能IO板卡
	if (status != 0)
	{
		goto step1_fail;
	}

	status = wch_get_pci_board_conf(); // 
	if (status != 0)
	{
		goto step1_fail;
	}
	
	
	status = wch_assign_resource(); 
	if (status != 0)
	{
		goto step1_fail;
	}
	
	
	status = wch_ser_port_table_init();
	if (status != 0)
	{
		goto step1_fail;
	}
	
	
	status = wch_register_irq(); // 请求中断
	if (status != 0)
	{
		goto step1_fail;
	}
	
	
	status = wch_ser_register_driver(&wch_ser_reg); // 注册驱动
	if (status != 0)
	{
		goto step2_fail;
	}	
	
	
   	status = wch_ser_register_ports(&wch_ser_reg); // 注册端口
    if (status != 0)
    {
        goto step3_fail;
    }
	

#if WCH_DBG
	wch_debug();
	ch365_32s_test();
#endif	
	
	
	printk("================================================================================\n");
	return status;
	
step3_fail:
	
	wch_ser_unregister_driver(&wch_ser_reg);
	
	
step2_fail:
	
	wch_release_irq();
	
	
step1_fail:
	
	printk("WCH Error: Couldn't Loading WCH Multi-I/O Board Driver Module correctly,\n"); 
	printk("           please reboot system and try again. If still can't loading driver,\n");
	printk("           contact support.\n\n");	
	printk("================================================================================\n");
	return status;
	
}

static
void
__exit 
wch_exit(
	void
	) // 卸载模块
{
	printk("\n\n");
	printk("====================  WCH Device Driver Module Uninstall  ====================\n");
	printk("\n");
	
	wch_ser_unregister_ports(&wch_ser_reg);
	
	wch_ser_unregister_driver(&wch_ser_reg);
	
	wch_iounmap();

	wch_release_irq();
	
	printk("WCH Info : Unload WCH Multi-I/O Board Driver Module Done.\n");
	printk("================================================================================\n");
}

module_init(wch_init);
module_exit(wch_exit);
